1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 1999 - 2018 Intel Corporation. */
3
4 #include <linux/pci.h>
5 #include <linux/delay.h>
6 #include <linux/sched.h>
7
8 #include "ixgbe.h"
9 #include "ixgbe_phy.h"
10 #include "ixgbe_mbx.h"
11
12 #define IXGBE_82599_MAX_TX_QUEUES 128
13 #define IXGBE_82599_MAX_RX_QUEUES 128
14 #define IXGBE_82599_RAR_ENTRIES 128
15 #define IXGBE_82599_MC_TBL_SIZE 128
16 #define IXGBE_82599_VFT_TBL_SIZE 128
17 #define IXGBE_82599_RX_PB_SIZE 512
18
19 static void ixgbe_disable_tx_laser_multispeed_fiber(struct ixgbe_hw *hw);
20 static void ixgbe_enable_tx_laser_multispeed_fiber(struct ixgbe_hw *hw);
21 static void ixgbe_flap_tx_laser_multispeed_fiber(struct ixgbe_hw *hw);
22 static void
23 ixgbe_set_hard_rate_select_speed(struct ixgbe_hw *, ixgbe_link_speed);
24 static s32 ixgbe_setup_mac_link_smartspeed(struct ixgbe_hw *hw,
25 ixgbe_link_speed speed,
26 bool autoneg_wait_to_complete);
27 static void ixgbe_stop_mac_link_on_d3_82599(struct ixgbe_hw *hw);
28 static s32 ixgbe_start_mac_link_82599(struct ixgbe_hw *hw,
29 bool autoneg_wait_to_complete);
30 static s32 ixgbe_setup_mac_link_82599(struct ixgbe_hw *hw,
31 ixgbe_link_speed speed,
32 bool autoneg_wait_to_complete);
33 static s32 ixgbe_setup_copper_link_82599(struct ixgbe_hw *hw,
34 ixgbe_link_speed speed,
35 bool autoneg_wait_to_complete);
36 static s32 ixgbe_verify_fw_version_82599(struct ixgbe_hw *hw);
37 static s32 ixgbe_read_i2c_byte_82599(struct ixgbe_hw *hw, u8 byte_offset,
38 u8 dev_addr, u8 *data);
39 static s32 ixgbe_write_i2c_byte_82599(struct ixgbe_hw *hw, u8 byte_offset,
40 u8 dev_addr, u8 data);
41 static s32 ixgbe_reset_pipeline_82599(struct ixgbe_hw *hw);
42 static bool ixgbe_verify_lesm_fw_enabled_82599(struct ixgbe_hw *hw);
43
ixgbe_mng_enabled(struct ixgbe_hw * hw)44 bool ixgbe_mng_enabled(struct ixgbe_hw *hw)
45 {
46 u32 fwsm, manc, factps;
47
48 fwsm = IXGBE_READ_REG(hw, IXGBE_FWSM(hw));
49 if ((fwsm & IXGBE_FWSM_MODE_MASK) != IXGBE_FWSM_FW_MODE_PT)
50 return false;
51
52 manc = IXGBE_READ_REG(hw, IXGBE_MANC);
53 if (!(manc & IXGBE_MANC_RCV_TCO_EN))
54 return false;
55
56 factps = IXGBE_READ_REG(hw, IXGBE_FACTPS(hw));
57 if (factps & IXGBE_FACTPS_MNGCG)
58 return false;
59
60 return true;
61 }
62
ixgbe_init_mac_link_ops_82599(struct ixgbe_hw * hw)63 static void ixgbe_init_mac_link_ops_82599(struct ixgbe_hw *hw)
64 {
65 struct ixgbe_mac_info *mac = &hw->mac;
66
67 /* enable the laser control functions for SFP+ fiber
68 * and MNG not enabled
69 */
70 if ((mac->ops.get_media_type(hw) == ixgbe_media_type_fiber) &&
71 !ixgbe_mng_enabled(hw)) {
72 mac->ops.disable_tx_laser =
73 &ixgbe_disable_tx_laser_multispeed_fiber;
74 mac->ops.enable_tx_laser =
75 &ixgbe_enable_tx_laser_multispeed_fiber;
76 mac->ops.flap_tx_laser = &ixgbe_flap_tx_laser_multispeed_fiber;
77 } else {
78 mac->ops.disable_tx_laser = NULL;
79 mac->ops.enable_tx_laser = NULL;
80 mac->ops.flap_tx_laser = NULL;
81 }
82
83 if (hw->phy.multispeed_fiber) {
84 /* Set up dual speed SFP+ support */
85 mac->ops.setup_link = &ixgbe_setup_mac_link_multispeed_fiber;
86 mac->ops.setup_mac_link = ixgbe_setup_mac_link_82599;
87 mac->ops.set_rate_select_speed =
88 ixgbe_set_hard_rate_select_speed;
89 } else {
90 if ((mac->ops.get_media_type(hw) ==
91 ixgbe_media_type_backplane) &&
92 (hw->phy.smart_speed == ixgbe_smart_speed_auto ||
93 hw->phy.smart_speed == ixgbe_smart_speed_on) &&
94 !ixgbe_verify_lesm_fw_enabled_82599(hw))
95 mac->ops.setup_link = &ixgbe_setup_mac_link_smartspeed;
96 else
97 mac->ops.setup_link = &ixgbe_setup_mac_link_82599;
98 }
99 }
100
ixgbe_setup_sfp_modules_82599(struct ixgbe_hw * hw)101 static s32 ixgbe_setup_sfp_modules_82599(struct ixgbe_hw *hw)
102 {
103 s32 ret_val;
104 u16 list_offset, data_offset, data_value;
105
106 if (hw->phy.sfp_type != ixgbe_sfp_type_unknown) {
107 ixgbe_init_mac_link_ops_82599(hw);
108
109 hw->phy.ops.reset = NULL;
110
111 ret_val = ixgbe_get_sfp_init_sequence_offsets(hw, &list_offset,
112 &data_offset);
113 if (ret_val)
114 return ret_val;
115
116 /* PHY config will finish before releasing the semaphore */
117 ret_val = hw->mac.ops.acquire_swfw_sync(hw,
118 IXGBE_GSSR_MAC_CSR_SM);
119 if (ret_val)
120 return -EBUSY;
121
122 if (hw->eeprom.ops.read(hw, ++data_offset, &data_value))
123 goto setup_sfp_err;
124 while (data_value != 0xffff) {
125 IXGBE_WRITE_REG(hw, IXGBE_CORECTL, data_value);
126 IXGBE_WRITE_FLUSH(hw);
127 if (hw->eeprom.ops.read(hw, ++data_offset, &data_value))
128 goto setup_sfp_err;
129 }
130
131 /* Release the semaphore */
132 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_MAC_CSR_SM);
133 /*
134 * Delay obtaining semaphore again to allow FW access,
135 * semaphore_delay is in ms usleep_range needs us.
136 */
137 usleep_range(hw->eeprom.semaphore_delay * 1000,
138 hw->eeprom.semaphore_delay * 2000);
139
140 /* Restart DSP and set SFI mode */
141 ret_val = hw->mac.ops.prot_autoc_write(hw,
142 hw->mac.orig_autoc | IXGBE_AUTOC_LMS_10G_SERIAL,
143 false);
144
145 if (ret_val) {
146 hw_dbg(hw, " sfp module setup not complete\n");
147 return -EIO;
148 }
149 }
150
151 return 0;
152
153 setup_sfp_err:
154 /* Release the semaphore */
155 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_MAC_CSR_SM);
156 /* Delay obtaining semaphore again to allow FW access,
157 * semaphore_delay is in ms usleep_range needs us.
158 */
159 usleep_range(hw->eeprom.semaphore_delay * 1000,
160 hw->eeprom.semaphore_delay * 2000);
161 hw_err(hw, "eeprom read at offset %d failed\n", data_offset);
162 return -EIO;
163 }
164
165 /**
166 * prot_autoc_read_82599 - Hides MAC differences needed for AUTOC read
167 * @hw: pointer to hardware structure
168 * @locked: Return the if we locked for this read.
169 * @reg_val: Value we read from AUTOC
170 *
171 * For this part (82599) we need to wrap read-modify-writes with a possible
172 * FW/SW lock. It is assumed this lock will be freed with the next
173 * prot_autoc_write_82599(). Note, that locked can only be true in cases
174 * where this function doesn't return an error.
175 **/
prot_autoc_read_82599(struct ixgbe_hw * hw,bool * locked,u32 * reg_val)176 static s32 prot_autoc_read_82599(struct ixgbe_hw *hw, bool *locked,
177 u32 *reg_val)
178 {
179 s32 ret_val;
180
181 *locked = false;
182 /* If LESM is on then we need to hold the SW/FW semaphore. */
183 if (ixgbe_verify_lesm_fw_enabled_82599(hw)) {
184 ret_val = hw->mac.ops.acquire_swfw_sync(hw,
185 IXGBE_GSSR_MAC_CSR_SM);
186 if (ret_val)
187 return -EBUSY;
188
189 *locked = true;
190 }
191
192 *reg_val = IXGBE_READ_REG(hw, IXGBE_AUTOC);
193 return 0;
194 }
195
196 /**
197 * prot_autoc_write_82599 - Hides MAC differences needed for AUTOC write
198 * @hw: pointer to hardware structure
199 * @autoc: value to write to AUTOC
200 * @locked: bool to indicate whether the SW/FW lock was already taken by
201 * previous proc_autoc_read_82599.
202 *
203 * This part (82599) may need to hold a the SW/FW lock around all writes to
204 * AUTOC. Likewise after a write we need to do a pipeline reset.
205 **/
prot_autoc_write_82599(struct ixgbe_hw * hw,u32 autoc,bool locked)206 static s32 prot_autoc_write_82599(struct ixgbe_hw *hw, u32 autoc, bool locked)
207 {
208 s32 ret_val = 0;
209
210 /* Blocked by MNG FW so bail */
211 if (ixgbe_check_reset_blocked(hw))
212 goto out;
213
214 /* We only need to get the lock if:
215 * - We didn't do it already (in the read part of a read-modify-write)
216 * - LESM is enabled.
217 */
218 if (!locked && ixgbe_verify_lesm_fw_enabled_82599(hw)) {
219 ret_val = hw->mac.ops.acquire_swfw_sync(hw,
220 IXGBE_GSSR_MAC_CSR_SM);
221 if (ret_val)
222 return -EBUSY;
223
224 locked = true;
225 }
226
227 IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc);
228 ret_val = ixgbe_reset_pipeline_82599(hw);
229
230 out:
231 /* Free the SW/FW semaphore as we either grabbed it here or
232 * already had it when this function was called.
233 */
234 if (locked)
235 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_MAC_CSR_SM);
236
237 return ret_val;
238 }
239
ixgbe_get_invariants_82599(struct ixgbe_hw * hw)240 static s32 ixgbe_get_invariants_82599(struct ixgbe_hw *hw)
241 {
242 struct ixgbe_mac_info *mac = &hw->mac;
243
244 ixgbe_init_mac_link_ops_82599(hw);
245
246 mac->mcft_size = IXGBE_82599_MC_TBL_SIZE;
247 mac->vft_size = IXGBE_82599_VFT_TBL_SIZE;
248 mac->num_rar_entries = IXGBE_82599_RAR_ENTRIES;
249 mac->rx_pb_size = IXGBE_82599_RX_PB_SIZE;
250 mac->max_rx_queues = IXGBE_82599_MAX_RX_QUEUES;
251 mac->max_tx_queues = IXGBE_82599_MAX_TX_QUEUES;
252 mac->max_msix_vectors = ixgbe_get_pcie_msix_count_generic(hw);
253
254 return 0;
255 }
256
257 /**
258 * ixgbe_init_phy_ops_82599 - PHY/SFP specific init
259 * @hw: pointer to hardware structure
260 *
261 * Initialize any function pointers that were not able to be
262 * set during get_invariants because the PHY/SFP type was
263 * not known. Perform the SFP init if necessary.
264 *
265 **/
ixgbe_init_phy_ops_82599(struct ixgbe_hw * hw)266 static s32 ixgbe_init_phy_ops_82599(struct ixgbe_hw *hw)
267 {
268 struct ixgbe_mac_info *mac = &hw->mac;
269 struct ixgbe_phy_info *phy = &hw->phy;
270 s32 ret_val;
271 u32 esdp;
272
273 if (hw->device_id == IXGBE_DEV_ID_82599_QSFP_SF_QP) {
274 /* Store flag indicating I2C bus access control unit. */
275 hw->phy.qsfp_shared_i2c_bus = true;
276
277 /* Initialize access to QSFP+ I2C bus */
278 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
279 esdp |= IXGBE_ESDP_SDP0_DIR;
280 esdp &= ~IXGBE_ESDP_SDP1_DIR;
281 esdp &= ~IXGBE_ESDP_SDP0;
282 esdp &= ~IXGBE_ESDP_SDP0_NATIVE;
283 esdp &= ~IXGBE_ESDP_SDP1_NATIVE;
284 IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp);
285 IXGBE_WRITE_FLUSH(hw);
286
287 phy->ops.read_i2c_byte = &ixgbe_read_i2c_byte_82599;
288 phy->ops.write_i2c_byte = &ixgbe_write_i2c_byte_82599;
289 }
290
291 /* Identify the PHY or SFP module */
292 ret_val = phy->ops.identify(hw);
293
294 /* Setup function pointers based on detected SFP module and speeds */
295 ixgbe_init_mac_link_ops_82599(hw);
296
297 /* If copper media, overwrite with copper function pointers */
298 if (mac->ops.get_media_type(hw) == ixgbe_media_type_copper) {
299 mac->ops.setup_link = &ixgbe_setup_copper_link_82599;
300 mac->ops.get_link_capabilities =
301 &ixgbe_get_copper_link_capabilities_generic;
302 }
303
304 /* Set necessary function pointers based on phy type */
305 switch (hw->phy.type) {
306 case ixgbe_phy_tn:
307 phy->ops.check_link = &ixgbe_check_phy_link_tnx;
308 phy->ops.setup_link = &ixgbe_setup_phy_link_tnx;
309 break;
310 default:
311 break;
312 }
313
314 return ret_val;
315 }
316
317 /**
318 * ixgbe_get_link_capabilities_82599 - Determines link capabilities
319 * @hw: pointer to hardware structure
320 * @speed: pointer to link speed
321 * @autoneg: true when autoneg or autotry is enabled
322 *
323 * Determines the link capabilities by reading the AUTOC register.
324 **/
ixgbe_get_link_capabilities_82599(struct ixgbe_hw * hw,ixgbe_link_speed * speed,bool * autoneg)325 static s32 ixgbe_get_link_capabilities_82599(struct ixgbe_hw *hw,
326 ixgbe_link_speed *speed,
327 bool *autoneg)
328 {
329 u32 autoc = 0;
330
331 /* Determine 1G link capabilities off of SFP+ type */
332 if (hw->phy.sfp_type == ixgbe_sfp_type_1g_cu_core0 ||
333 hw->phy.sfp_type == ixgbe_sfp_type_1g_cu_core1 ||
334 hw->phy.sfp_type == ixgbe_sfp_type_1g_lx_core0 ||
335 hw->phy.sfp_type == ixgbe_sfp_type_1g_lx_core1 ||
336 hw->phy.sfp_type == ixgbe_sfp_type_1g_sx_core0 ||
337 hw->phy.sfp_type == ixgbe_sfp_type_1g_sx_core1) {
338 *speed = IXGBE_LINK_SPEED_1GB_FULL;
339 *autoneg = true;
340 return 0;
341 }
342
343 /*
344 * Determine link capabilities based on the stored value of AUTOC,
345 * which represents EEPROM defaults. If AUTOC value has not been
346 * stored, use the current register value.
347 */
348 if (hw->mac.orig_link_settings_stored)
349 autoc = hw->mac.orig_autoc;
350 else
351 autoc = IXGBE_READ_REG(hw, IXGBE_AUTOC);
352
353 switch (autoc & IXGBE_AUTOC_LMS_MASK) {
354 case IXGBE_AUTOC_LMS_1G_LINK_NO_AN:
355 *speed = IXGBE_LINK_SPEED_1GB_FULL;
356 *autoneg = false;
357 break;
358
359 case IXGBE_AUTOC_LMS_10G_LINK_NO_AN:
360 *speed = IXGBE_LINK_SPEED_10GB_FULL;
361 *autoneg = false;
362 break;
363
364 case IXGBE_AUTOC_LMS_1G_AN:
365 *speed = IXGBE_LINK_SPEED_1GB_FULL;
366 *autoneg = true;
367 break;
368
369 case IXGBE_AUTOC_LMS_10G_SERIAL:
370 *speed = IXGBE_LINK_SPEED_10GB_FULL;
371 *autoneg = false;
372 break;
373
374 case IXGBE_AUTOC_LMS_KX4_KX_KR:
375 case IXGBE_AUTOC_LMS_KX4_KX_KR_1G_AN:
376 *speed = IXGBE_LINK_SPEED_UNKNOWN;
377 if (autoc & IXGBE_AUTOC_KR_SUPP)
378 *speed |= IXGBE_LINK_SPEED_10GB_FULL;
379 if (autoc & IXGBE_AUTOC_KX4_SUPP)
380 *speed |= IXGBE_LINK_SPEED_10GB_FULL;
381 if (autoc & IXGBE_AUTOC_KX_SUPP)
382 *speed |= IXGBE_LINK_SPEED_1GB_FULL;
383 *autoneg = true;
384 break;
385
386 case IXGBE_AUTOC_LMS_KX4_KX_KR_SGMII:
387 *speed = IXGBE_LINK_SPEED_100_FULL;
388 if (autoc & IXGBE_AUTOC_KR_SUPP)
389 *speed |= IXGBE_LINK_SPEED_10GB_FULL;
390 if (autoc & IXGBE_AUTOC_KX4_SUPP)
391 *speed |= IXGBE_LINK_SPEED_10GB_FULL;
392 if (autoc & IXGBE_AUTOC_KX_SUPP)
393 *speed |= IXGBE_LINK_SPEED_1GB_FULL;
394 *autoneg = true;
395 break;
396
397 case IXGBE_AUTOC_LMS_SGMII_1G_100M:
398 *speed = IXGBE_LINK_SPEED_1GB_FULL | IXGBE_LINK_SPEED_100_FULL;
399 *autoneg = false;
400 break;
401
402 default:
403 return -EIO;
404 }
405
406 if (hw->phy.multispeed_fiber) {
407 *speed |= IXGBE_LINK_SPEED_10GB_FULL |
408 IXGBE_LINK_SPEED_1GB_FULL;
409
410 /* QSFP must not enable auto-negotiation */
411 if (hw->phy.media_type == ixgbe_media_type_fiber_qsfp)
412 *autoneg = false;
413 else
414 *autoneg = true;
415 }
416
417 return 0;
418 }
419
420 /**
421 * ixgbe_get_media_type_82599 - Get media type
422 * @hw: pointer to hardware structure
423 *
424 * Returns the media type (fiber, copper, backplane)
425 **/
ixgbe_get_media_type_82599(struct ixgbe_hw * hw)426 static enum ixgbe_media_type ixgbe_get_media_type_82599(struct ixgbe_hw *hw)
427 {
428 /* Detect if there is a copper PHY attached. */
429 switch (hw->phy.type) {
430 case ixgbe_phy_cu_unknown:
431 case ixgbe_phy_tn:
432 return ixgbe_media_type_copper;
433
434 default:
435 break;
436 }
437
438 switch (hw->device_id) {
439 case IXGBE_DEV_ID_82599_KX4:
440 case IXGBE_DEV_ID_82599_KX4_MEZZ:
441 case IXGBE_DEV_ID_82599_COMBO_BACKPLANE:
442 case IXGBE_DEV_ID_82599_KR:
443 case IXGBE_DEV_ID_82599_BACKPLANE_FCOE:
444 case IXGBE_DEV_ID_82599_XAUI_LOM:
445 /* Default device ID is mezzanine card KX/KX4 */
446 return ixgbe_media_type_backplane;
447
448 case IXGBE_DEV_ID_82599_SFP:
449 case IXGBE_DEV_ID_82599_SFP_FCOE:
450 case IXGBE_DEV_ID_82599_SFP_EM:
451 case IXGBE_DEV_ID_82599_SFP_SF2:
452 case IXGBE_DEV_ID_82599_SFP_SF_QP:
453 case IXGBE_DEV_ID_82599EN_SFP:
454 return ixgbe_media_type_fiber;
455
456 case IXGBE_DEV_ID_82599_CX4:
457 return ixgbe_media_type_cx4;
458
459 case IXGBE_DEV_ID_82599_T3_LOM:
460 return ixgbe_media_type_copper;
461
462 case IXGBE_DEV_ID_82599_LS:
463 return ixgbe_media_type_fiber_lco;
464
465 case IXGBE_DEV_ID_82599_QSFP_SF_QP:
466 return ixgbe_media_type_fiber_qsfp;
467
468 default:
469 return ixgbe_media_type_unknown;
470 }
471 }
472
473 /**
474 * ixgbe_stop_mac_link_on_d3_82599 - Disables link on D3
475 * @hw: pointer to hardware structure
476 *
477 * Disables link, should be called during D3 power down sequence.
478 *
479 **/
ixgbe_stop_mac_link_on_d3_82599(struct ixgbe_hw * hw)480 static void ixgbe_stop_mac_link_on_d3_82599(struct ixgbe_hw *hw)
481 {
482 u32 autoc2_reg;
483 u16 ee_ctrl_2 = 0;
484
485 hw->eeprom.ops.read(hw, IXGBE_EEPROM_CTRL_2, &ee_ctrl_2);
486
487 if (!ixgbe_mng_present(hw) && !hw->wol_enabled &&
488 ee_ctrl_2 & IXGBE_EEPROM_CCD_BIT) {
489 autoc2_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC2);
490 autoc2_reg |= IXGBE_AUTOC2_LINK_DISABLE_ON_D3_MASK;
491 IXGBE_WRITE_REG(hw, IXGBE_AUTOC2, autoc2_reg);
492 }
493 }
494
495 /**
496 * ixgbe_start_mac_link_82599 - Setup MAC link settings
497 * @hw: pointer to hardware structure
498 * @autoneg_wait_to_complete: true when waiting for completion is needed
499 *
500 * Configures link settings based on values in the ixgbe_hw struct.
501 * Restarts the link. Performs autonegotiation if needed.
502 **/
ixgbe_start_mac_link_82599(struct ixgbe_hw * hw,bool autoneg_wait_to_complete)503 static s32 ixgbe_start_mac_link_82599(struct ixgbe_hw *hw,
504 bool autoneg_wait_to_complete)
505 {
506 u32 autoc_reg;
507 u32 links_reg;
508 u32 i;
509 s32 status = 0;
510 bool got_lock = false;
511
512 if (ixgbe_verify_lesm_fw_enabled_82599(hw)) {
513 status = hw->mac.ops.acquire_swfw_sync(hw,
514 IXGBE_GSSR_MAC_CSR_SM);
515 if (status)
516 return status;
517
518 got_lock = true;
519 }
520
521 /* Restart link */
522 ixgbe_reset_pipeline_82599(hw);
523
524 if (got_lock)
525 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_MAC_CSR_SM);
526
527 /* Only poll for autoneg to complete if specified to do so */
528 if (autoneg_wait_to_complete) {
529 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
530 if ((autoc_reg & IXGBE_AUTOC_LMS_MASK) ==
531 IXGBE_AUTOC_LMS_KX4_KX_KR ||
532 (autoc_reg & IXGBE_AUTOC_LMS_MASK) ==
533 IXGBE_AUTOC_LMS_KX4_KX_KR_1G_AN ||
534 (autoc_reg & IXGBE_AUTOC_LMS_MASK) ==
535 IXGBE_AUTOC_LMS_KX4_KX_KR_SGMII) {
536 links_reg = 0; /* Just in case Autoneg time = 0 */
537 for (i = 0; i < IXGBE_AUTO_NEG_TIME; i++) {
538 links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
539 if (links_reg & IXGBE_LINKS_KX_AN_COMP)
540 break;
541 msleep(100);
542 }
543 if (!(links_reg & IXGBE_LINKS_KX_AN_COMP)) {
544 status = -EIO;
545 hw_dbg(hw, "Autoneg did not complete.\n");
546 }
547 }
548 }
549
550 /* Add delay to filter out noises during initial link setup */
551 msleep(50);
552
553 return status;
554 }
555
556 /**
557 * ixgbe_disable_tx_laser_multispeed_fiber - Disable Tx laser
558 * @hw: pointer to hardware structure
559 *
560 * The base drivers may require better control over SFP+ module
561 * PHY states. This includes selectively shutting down the Tx
562 * laser on the PHY, effectively halting physical link.
563 **/
ixgbe_disable_tx_laser_multispeed_fiber(struct ixgbe_hw * hw)564 static void ixgbe_disable_tx_laser_multispeed_fiber(struct ixgbe_hw *hw)
565 {
566 u32 esdp_reg = IXGBE_READ_REG(hw, IXGBE_ESDP);
567
568 /* Blocked by MNG FW so bail */
569 if (ixgbe_check_reset_blocked(hw))
570 return;
571
572 /* Disable tx laser; allow 100us to go dark per spec */
573 esdp_reg |= IXGBE_ESDP_SDP3;
574 IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp_reg);
575 IXGBE_WRITE_FLUSH(hw);
576 udelay(100);
577 }
578
579 /**
580 * ixgbe_enable_tx_laser_multispeed_fiber - Enable Tx laser
581 * @hw: pointer to hardware structure
582 *
583 * The base drivers may require better control over SFP+ module
584 * PHY states. This includes selectively turning on the Tx
585 * laser on the PHY, effectively starting physical link.
586 **/
ixgbe_enable_tx_laser_multispeed_fiber(struct ixgbe_hw * hw)587 static void ixgbe_enable_tx_laser_multispeed_fiber(struct ixgbe_hw *hw)
588 {
589 u32 esdp_reg = IXGBE_READ_REG(hw, IXGBE_ESDP);
590
591 /* Enable tx laser; allow 100ms to light up */
592 esdp_reg &= ~IXGBE_ESDP_SDP3;
593 IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp_reg);
594 IXGBE_WRITE_FLUSH(hw);
595 msleep(100);
596 }
597
598 /**
599 * ixgbe_flap_tx_laser_multispeed_fiber - Flap Tx laser
600 * @hw: pointer to hardware structure
601 *
602 * When the driver changes the link speeds that it can support,
603 * it sets autotry_restart to true to indicate that we need to
604 * initiate a new autotry session with the link partner. To do
605 * so, we set the speed then disable and re-enable the tx laser, to
606 * alert the link partner that it also needs to restart autotry on its
607 * end. This is consistent with true clause 37 autoneg, which also
608 * involves a loss of signal.
609 **/
ixgbe_flap_tx_laser_multispeed_fiber(struct ixgbe_hw * hw)610 static void ixgbe_flap_tx_laser_multispeed_fiber(struct ixgbe_hw *hw)
611 {
612 /* Blocked by MNG FW so bail */
613 if (ixgbe_check_reset_blocked(hw))
614 return;
615
616 if (hw->mac.autotry_restart) {
617 ixgbe_disable_tx_laser_multispeed_fiber(hw);
618 ixgbe_enable_tx_laser_multispeed_fiber(hw);
619 hw->mac.autotry_restart = false;
620 }
621 }
622
623 /**
624 * ixgbe_set_hard_rate_select_speed - Set module link speed
625 * @hw: pointer to hardware structure
626 * @speed: link speed to set
627 *
628 * Set module link speed via RS0/RS1 rate select pins.
629 */
630 static void
ixgbe_set_hard_rate_select_speed(struct ixgbe_hw * hw,ixgbe_link_speed speed)631 ixgbe_set_hard_rate_select_speed(struct ixgbe_hw *hw, ixgbe_link_speed speed)
632 {
633 u32 esdp_reg = IXGBE_READ_REG(hw, IXGBE_ESDP);
634
635 switch (speed) {
636 case IXGBE_LINK_SPEED_10GB_FULL:
637 esdp_reg |= (IXGBE_ESDP_SDP5_DIR | IXGBE_ESDP_SDP5);
638 break;
639 case IXGBE_LINK_SPEED_1GB_FULL:
640 esdp_reg &= ~IXGBE_ESDP_SDP5;
641 esdp_reg |= IXGBE_ESDP_SDP5_DIR;
642 break;
643 default:
644 hw_dbg(hw, "Invalid fixed module speed\n");
645 return;
646 }
647
648 IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp_reg);
649 IXGBE_WRITE_FLUSH(hw);
650 }
651
652 /**
653 * ixgbe_setup_mac_link_smartspeed - Set MAC link speed using SmartSpeed
654 * @hw: pointer to hardware structure
655 * @speed: new link speed
656 * @autoneg_wait_to_complete: true when waiting for completion is needed
657 *
658 * Implements the Intel SmartSpeed algorithm.
659 **/
ixgbe_setup_mac_link_smartspeed(struct ixgbe_hw * hw,ixgbe_link_speed speed,bool autoneg_wait_to_complete)660 static s32 ixgbe_setup_mac_link_smartspeed(struct ixgbe_hw *hw,
661 ixgbe_link_speed speed,
662 bool autoneg_wait_to_complete)
663 {
664 s32 status = 0;
665 ixgbe_link_speed link_speed = IXGBE_LINK_SPEED_UNKNOWN;
666 s32 i, j;
667 bool link_up = false;
668 u32 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
669
670 /* Set autoneg_advertised value based on input link speed */
671 hw->phy.autoneg_advertised = 0;
672
673 if (speed & IXGBE_LINK_SPEED_10GB_FULL)
674 hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_10GB_FULL;
675
676 if (speed & IXGBE_LINK_SPEED_1GB_FULL)
677 hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_1GB_FULL;
678
679 if (speed & IXGBE_LINK_SPEED_100_FULL)
680 hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_100_FULL;
681
682 /*
683 * Implement Intel SmartSpeed algorithm. SmartSpeed will reduce the
684 * autoneg advertisement if link is unable to be established at the
685 * highest negotiated rate. This can sometimes happen due to integrity
686 * issues with the physical media connection.
687 */
688
689 /* First, try to get link with full advertisement */
690 hw->phy.smart_speed_active = false;
691 for (j = 0; j < IXGBE_SMARTSPEED_MAX_RETRIES; j++) {
692 status = ixgbe_setup_mac_link_82599(hw, speed,
693 autoneg_wait_to_complete);
694 if (status != 0)
695 goto out;
696
697 /*
698 * Wait for the controller to acquire link. Per IEEE 802.3ap,
699 * Section 73.10.2, we may have to wait up to 500ms if KR is
700 * attempted, or 200ms if KX/KX4/BX/BX4 is attempted, per
701 * Table 9 in the AN MAS.
702 */
703 for (i = 0; i < 5; i++) {
704 mdelay(100);
705
706 /* If we have link, just jump out */
707 status = hw->mac.ops.check_link(hw, &link_speed,
708 &link_up, false);
709 if (status != 0)
710 goto out;
711
712 if (link_up)
713 goto out;
714 }
715 }
716
717 /*
718 * We didn't get link. If we advertised KR plus one of KX4/KX
719 * (or BX4/BX), then disable KR and try again.
720 */
721 if (((autoc_reg & IXGBE_AUTOC_KR_SUPP) == 0) ||
722 ((autoc_reg & IXGBE_AUTOC_KX4_KX_SUPP_MASK) == 0))
723 goto out;
724
725 /* Turn SmartSpeed on to disable KR support */
726 hw->phy.smart_speed_active = true;
727 status = ixgbe_setup_mac_link_82599(hw, speed,
728 autoneg_wait_to_complete);
729 if (status != 0)
730 goto out;
731
732 /*
733 * Wait for the controller to acquire link. 600ms will allow for
734 * the AN link_fail_inhibit_timer as well for multiple cycles of
735 * parallel detect, both 10g and 1g. This allows for the maximum
736 * connect attempts as defined in the AN MAS table 73-7.
737 */
738 for (i = 0; i < 6; i++) {
739 mdelay(100);
740
741 /* If we have link, just jump out */
742 status = hw->mac.ops.check_link(hw, &link_speed,
743 &link_up, false);
744 if (status != 0)
745 goto out;
746
747 if (link_up)
748 goto out;
749 }
750
751 /* We didn't get link. Turn SmartSpeed back off. */
752 hw->phy.smart_speed_active = false;
753 status = ixgbe_setup_mac_link_82599(hw, speed,
754 autoneg_wait_to_complete);
755
756 out:
757 if (link_up && (link_speed == IXGBE_LINK_SPEED_1GB_FULL))
758 hw_dbg(hw, "Smartspeed has downgraded the link speed from the maximum advertised\n");
759 return status;
760 }
761
762 /**
763 * ixgbe_setup_mac_link_82599 - Set MAC link speed
764 * @hw: pointer to hardware structure
765 * @speed: new link speed
766 * @autoneg_wait_to_complete: true when waiting for completion is needed
767 *
768 * Set the link speed in the AUTOC register and restarts link.
769 **/
ixgbe_setup_mac_link_82599(struct ixgbe_hw * hw,ixgbe_link_speed speed,bool autoneg_wait_to_complete)770 static s32 ixgbe_setup_mac_link_82599(struct ixgbe_hw *hw,
771 ixgbe_link_speed speed,
772 bool autoneg_wait_to_complete)
773 {
774 bool autoneg = false;
775 s32 status;
776 u32 pma_pmd_1g, link_mode, links_reg, i;
777 u32 autoc2 = IXGBE_READ_REG(hw, IXGBE_AUTOC2);
778 u32 pma_pmd_10g_serial = autoc2 & IXGBE_AUTOC2_10G_SERIAL_PMA_PMD_MASK;
779 ixgbe_link_speed link_capabilities = IXGBE_LINK_SPEED_UNKNOWN;
780
781 /* holds the value of AUTOC register at this current point in time */
782 u32 current_autoc = IXGBE_READ_REG(hw, IXGBE_AUTOC);
783 /* holds the cached value of AUTOC register */
784 u32 orig_autoc = 0;
785 /* temporary variable used for comparison purposes */
786 u32 autoc = current_autoc;
787
788 /* Check to see if speed passed in is supported. */
789 status = hw->mac.ops.get_link_capabilities(hw, &link_capabilities,
790 &autoneg);
791 if (status)
792 return status;
793
794 speed &= link_capabilities;
795
796 if (speed == IXGBE_LINK_SPEED_UNKNOWN)
797 return -EINVAL;
798
799 /* Use stored value (EEPROM defaults) of AUTOC to find KR/KX4 support*/
800 if (hw->mac.orig_link_settings_stored)
801 orig_autoc = hw->mac.orig_autoc;
802 else
803 orig_autoc = autoc;
804
805 link_mode = autoc & IXGBE_AUTOC_LMS_MASK;
806 pma_pmd_1g = autoc & IXGBE_AUTOC_1G_PMA_PMD_MASK;
807
808 if (link_mode == IXGBE_AUTOC_LMS_KX4_KX_KR ||
809 link_mode == IXGBE_AUTOC_LMS_KX4_KX_KR_1G_AN ||
810 link_mode == IXGBE_AUTOC_LMS_KX4_KX_KR_SGMII) {
811 /* Set KX4/KX/KR support according to speed requested */
812 autoc &= ~(IXGBE_AUTOC_KX4_KX_SUPP_MASK | IXGBE_AUTOC_KR_SUPP);
813 if (speed & IXGBE_LINK_SPEED_10GB_FULL) {
814 if (orig_autoc & IXGBE_AUTOC_KX4_SUPP)
815 autoc |= IXGBE_AUTOC_KX4_SUPP;
816 if ((orig_autoc & IXGBE_AUTOC_KR_SUPP) &&
817 (hw->phy.smart_speed_active == false))
818 autoc |= IXGBE_AUTOC_KR_SUPP;
819 }
820 if (speed & IXGBE_LINK_SPEED_1GB_FULL)
821 autoc |= IXGBE_AUTOC_KX_SUPP;
822 } else if ((pma_pmd_1g == IXGBE_AUTOC_1G_SFI) &&
823 (link_mode == IXGBE_AUTOC_LMS_1G_LINK_NO_AN ||
824 link_mode == IXGBE_AUTOC_LMS_1G_AN)) {
825 /* Switch from 1G SFI to 10G SFI if requested */
826 if ((speed == IXGBE_LINK_SPEED_10GB_FULL) &&
827 (pma_pmd_10g_serial == IXGBE_AUTOC2_10G_SFI)) {
828 autoc &= ~IXGBE_AUTOC_LMS_MASK;
829 autoc |= IXGBE_AUTOC_LMS_10G_SERIAL;
830 }
831 } else if ((pma_pmd_10g_serial == IXGBE_AUTOC2_10G_SFI) &&
832 (link_mode == IXGBE_AUTOC_LMS_10G_SERIAL)) {
833 /* Switch from 10G SFI to 1G SFI if requested */
834 if ((speed == IXGBE_LINK_SPEED_1GB_FULL) &&
835 (pma_pmd_1g == IXGBE_AUTOC_1G_SFI)) {
836 autoc &= ~IXGBE_AUTOC_LMS_MASK;
837 if (autoneg)
838 autoc |= IXGBE_AUTOC_LMS_1G_AN;
839 else
840 autoc |= IXGBE_AUTOC_LMS_1G_LINK_NO_AN;
841 }
842 }
843
844 if (autoc != current_autoc) {
845 /* Restart link */
846 status = hw->mac.ops.prot_autoc_write(hw, autoc, false);
847 if (status)
848 return status;
849
850 /* Only poll for autoneg to complete if specified to do so */
851 if (autoneg_wait_to_complete) {
852 if (link_mode == IXGBE_AUTOC_LMS_KX4_KX_KR ||
853 link_mode == IXGBE_AUTOC_LMS_KX4_KX_KR_1G_AN ||
854 link_mode == IXGBE_AUTOC_LMS_KX4_KX_KR_SGMII) {
855 links_reg = 0; /*Just in case Autoneg time=0*/
856 for (i = 0; i < IXGBE_AUTO_NEG_TIME; i++) {
857 links_reg =
858 IXGBE_READ_REG(hw, IXGBE_LINKS);
859 if (links_reg & IXGBE_LINKS_KX_AN_COMP)
860 break;
861 msleep(100);
862 }
863 if (!(links_reg & IXGBE_LINKS_KX_AN_COMP)) {
864 status = -EIO;
865 hw_dbg(hw, "Autoneg did not complete.\n");
866 }
867 }
868 }
869
870 /* Add delay to filter out noises during initial link setup */
871 msleep(50);
872 }
873
874 return status;
875 }
876
877 /**
878 * ixgbe_setup_copper_link_82599 - Set the PHY autoneg advertised field
879 * @hw: pointer to hardware structure
880 * @speed: new link speed
881 * @autoneg_wait_to_complete: true if waiting is needed to complete
882 *
883 * Restarts link on PHY and MAC based on settings passed in.
884 **/
ixgbe_setup_copper_link_82599(struct ixgbe_hw * hw,ixgbe_link_speed speed,bool autoneg_wait_to_complete)885 static s32 ixgbe_setup_copper_link_82599(struct ixgbe_hw *hw,
886 ixgbe_link_speed speed,
887 bool autoneg_wait_to_complete)
888 {
889 s32 status;
890
891 /* Setup the PHY according to input speed */
892 status = hw->phy.ops.setup_link_speed(hw, speed,
893 autoneg_wait_to_complete);
894 /* Set up MAC */
895 ixgbe_start_mac_link_82599(hw, autoneg_wait_to_complete);
896
897 return status;
898 }
899
900 /**
901 * ixgbe_reset_hw_82599 - Perform hardware reset
902 * @hw: pointer to hardware structure
903 *
904 * Resets the hardware by resetting the transmit and receive units, masks
905 * and clears all interrupts, perform a PHY reset, and perform a link (MAC)
906 * reset.
907 **/
ixgbe_reset_hw_82599(struct ixgbe_hw * hw)908 static s32 ixgbe_reset_hw_82599(struct ixgbe_hw *hw)
909 {
910 ixgbe_link_speed link_speed;
911 s32 status;
912 u32 ctrl, i, autoc, autoc2;
913 u32 curr_lms;
914 bool link_up = false;
915
916 /* Call adapter stop to disable tx/rx and clear interrupts */
917 status = hw->mac.ops.stop_adapter(hw);
918 if (status)
919 return status;
920
921 /* flush pending Tx transactions */
922 ixgbe_clear_tx_pending(hw);
923
924 /* PHY ops must be identified and initialized prior to reset */
925
926 /* Identify PHY and related function pointers */
927 status = hw->phy.ops.init(hw);
928
929 if (status == -EOPNOTSUPP)
930 return status;
931
932 /* Setup SFP module if there is one present. */
933 if (hw->phy.sfp_setup_needed) {
934 status = hw->mac.ops.setup_sfp(hw);
935 hw->phy.sfp_setup_needed = false;
936 }
937
938 if (status == -EOPNOTSUPP)
939 return status;
940
941 /* Reset PHY */
942 if (hw->phy.reset_disable == false && hw->phy.ops.reset != NULL)
943 hw->phy.ops.reset(hw);
944
945 /* remember AUTOC from before we reset */
946 curr_lms = IXGBE_READ_REG(hw, IXGBE_AUTOC) & IXGBE_AUTOC_LMS_MASK;
947
948 mac_reset_top:
949 /*
950 * Issue global reset to the MAC. Needs to be SW reset if link is up.
951 * If link reset is used when link is up, it might reset the PHY when
952 * mng is using it. If link is down or the flag to force full link
953 * reset is set, then perform link reset.
954 */
955 ctrl = IXGBE_CTRL_LNK_RST;
956 if (!hw->force_full_reset) {
957 hw->mac.ops.check_link(hw, &link_speed, &link_up, false);
958 if (link_up)
959 ctrl = IXGBE_CTRL_RST;
960 }
961
962 ctrl |= IXGBE_READ_REG(hw, IXGBE_CTRL);
963 IXGBE_WRITE_REG(hw, IXGBE_CTRL, ctrl);
964 IXGBE_WRITE_FLUSH(hw);
965 usleep_range(1000, 1200);
966
967 /* Poll for reset bit to self-clear indicating reset is complete */
968 for (i = 0; i < 10; i++) {
969 ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL);
970 if (!(ctrl & IXGBE_CTRL_RST_MASK))
971 break;
972 udelay(1);
973 }
974
975 if (ctrl & IXGBE_CTRL_RST_MASK) {
976 status = -EIO;
977 hw_dbg(hw, "Reset polling failed to complete.\n");
978 }
979
980 msleep(50);
981
982 /*
983 * Double resets are required for recovery from certain error
984 * conditions. Between resets, it is necessary to stall to allow time
985 * for any pending HW events to complete.
986 */
987 if (hw->mac.flags & IXGBE_FLAGS_DOUBLE_RESET_REQUIRED) {
988 hw->mac.flags &= ~IXGBE_FLAGS_DOUBLE_RESET_REQUIRED;
989 goto mac_reset_top;
990 }
991
992 /*
993 * Store the original AUTOC/AUTOC2 values if they have not been
994 * stored off yet. Otherwise restore the stored original
995 * values since the reset operation sets back to defaults.
996 */
997 autoc = IXGBE_READ_REG(hw, IXGBE_AUTOC);
998 autoc2 = IXGBE_READ_REG(hw, IXGBE_AUTOC2);
999
1000 /* Enable link if disabled in NVM */
1001 if (autoc2 & IXGBE_AUTOC2_LINK_DISABLE_MASK) {
1002 autoc2 &= ~IXGBE_AUTOC2_LINK_DISABLE_MASK;
1003 IXGBE_WRITE_REG(hw, IXGBE_AUTOC2, autoc2);
1004 IXGBE_WRITE_FLUSH(hw);
1005 }
1006
1007 if (hw->mac.orig_link_settings_stored == false) {
1008 hw->mac.orig_autoc = autoc;
1009 hw->mac.orig_autoc2 = autoc2;
1010 hw->mac.orig_link_settings_stored = true;
1011 } else {
1012
1013 /* If MNG FW is running on a multi-speed device that
1014 * doesn't autoneg with out driver support we need to
1015 * leave LMS in the state it was before we MAC reset.
1016 * Likewise if we support WoL we don't want change the
1017 * LMS state either.
1018 */
1019 if ((hw->phy.multispeed_fiber && ixgbe_mng_enabled(hw)) ||
1020 hw->wol_enabled)
1021 hw->mac.orig_autoc =
1022 (hw->mac.orig_autoc & ~IXGBE_AUTOC_LMS_MASK) |
1023 curr_lms;
1024
1025 if (autoc != hw->mac.orig_autoc) {
1026 status = hw->mac.ops.prot_autoc_write(hw,
1027 hw->mac.orig_autoc,
1028 false);
1029 if (status)
1030 return status;
1031 }
1032
1033 if ((autoc2 & IXGBE_AUTOC2_UPPER_MASK) !=
1034 (hw->mac.orig_autoc2 & IXGBE_AUTOC2_UPPER_MASK)) {
1035 autoc2 &= ~IXGBE_AUTOC2_UPPER_MASK;
1036 autoc2 |= (hw->mac.orig_autoc2 &
1037 IXGBE_AUTOC2_UPPER_MASK);
1038 IXGBE_WRITE_REG(hw, IXGBE_AUTOC2, autoc2);
1039 }
1040 }
1041
1042 /* Store the permanent mac address */
1043 hw->mac.ops.get_mac_addr(hw, hw->mac.perm_addr);
1044
1045 /*
1046 * Store MAC address from RAR0, clear receive address registers, and
1047 * clear the multicast table. Also reset num_rar_entries to 128,
1048 * since we modify this value when programming the SAN MAC address.
1049 */
1050 hw->mac.num_rar_entries = IXGBE_82599_RAR_ENTRIES;
1051 hw->mac.ops.init_rx_addrs(hw);
1052
1053 /* Store the permanent SAN mac address */
1054 hw->mac.ops.get_san_mac_addr(hw, hw->mac.san_addr);
1055
1056 /* Add the SAN MAC address to the RAR only if it's a valid address */
1057 if (is_valid_ether_addr(hw->mac.san_addr)) {
1058 /* Save the SAN MAC RAR index */
1059 hw->mac.san_mac_rar_index = hw->mac.num_rar_entries - 1;
1060
1061 hw->mac.ops.set_rar(hw, hw->mac.san_mac_rar_index,
1062 hw->mac.san_addr, 0, IXGBE_RAH_AV);
1063
1064 /* clear VMDq pool/queue selection for this RAR */
1065 hw->mac.ops.clear_vmdq(hw, hw->mac.san_mac_rar_index,
1066 IXGBE_CLEAR_VMDQ_ALL);
1067
1068 /* Reserve the last RAR for the SAN MAC address */
1069 hw->mac.num_rar_entries--;
1070 }
1071
1072 /* Store the alternative WWNN/WWPN prefix */
1073 hw->mac.ops.get_wwn_prefix(hw, &hw->mac.wwnn_prefix,
1074 &hw->mac.wwpn_prefix);
1075
1076 return status;
1077 }
1078
1079 /**
1080 * ixgbe_fdir_check_cmd_complete - poll to check whether FDIRCMD is complete
1081 * @hw: pointer to hardware structure
1082 * @fdircmd: current value of FDIRCMD register
1083 */
ixgbe_fdir_check_cmd_complete(struct ixgbe_hw * hw,u32 * fdircmd)1084 static s32 ixgbe_fdir_check_cmd_complete(struct ixgbe_hw *hw, u32 *fdircmd)
1085 {
1086 int i;
1087
1088 for (i = 0; i < IXGBE_FDIRCMD_CMD_POLL; i++) {
1089 *fdircmd = IXGBE_READ_REG(hw, IXGBE_FDIRCMD);
1090 if (!(*fdircmd & IXGBE_FDIRCMD_CMD_MASK))
1091 return 0;
1092 udelay(10);
1093 }
1094
1095 return -EIO;
1096 }
1097
1098 /**
1099 * ixgbe_reinit_fdir_tables_82599 - Reinitialize Flow Director tables.
1100 * @hw: pointer to hardware structure
1101 **/
ixgbe_reinit_fdir_tables_82599(struct ixgbe_hw * hw)1102 s32 ixgbe_reinit_fdir_tables_82599(struct ixgbe_hw *hw)
1103 {
1104 int i;
1105 u32 fdirctrl = IXGBE_READ_REG(hw, IXGBE_FDIRCTRL);
1106 u32 fdircmd;
1107 s32 err;
1108
1109 fdirctrl &= ~IXGBE_FDIRCTRL_INIT_DONE;
1110
1111 /*
1112 * Before starting reinitialization process,
1113 * FDIRCMD.CMD must be zero.
1114 */
1115 err = ixgbe_fdir_check_cmd_complete(hw, &fdircmd);
1116 if (err) {
1117 hw_dbg(hw, "Flow Director previous command did not complete, aborting table re-initialization.\n");
1118 return err;
1119 }
1120
1121 IXGBE_WRITE_REG(hw, IXGBE_FDIRFREE, 0);
1122 IXGBE_WRITE_FLUSH(hw);
1123 /*
1124 * 82599 adapters flow director init flow cannot be restarted,
1125 * Workaround 82599 silicon errata by performing the following steps
1126 * before re-writing the FDIRCTRL control register with the same value.
1127 * - write 1 to bit 8 of FDIRCMD register &
1128 * - write 0 to bit 8 of FDIRCMD register
1129 */
1130 IXGBE_WRITE_REG(hw, IXGBE_FDIRCMD,
1131 (IXGBE_READ_REG(hw, IXGBE_FDIRCMD) |
1132 IXGBE_FDIRCMD_CLEARHT));
1133 IXGBE_WRITE_FLUSH(hw);
1134 IXGBE_WRITE_REG(hw, IXGBE_FDIRCMD,
1135 (IXGBE_READ_REG(hw, IXGBE_FDIRCMD) &
1136 ~IXGBE_FDIRCMD_CLEARHT));
1137 IXGBE_WRITE_FLUSH(hw);
1138 /*
1139 * Clear FDIR Hash register to clear any leftover hashes
1140 * waiting to be programmed.
1141 */
1142 IXGBE_WRITE_REG(hw, IXGBE_FDIRHASH, 0x00);
1143 IXGBE_WRITE_FLUSH(hw);
1144
1145 IXGBE_WRITE_REG(hw, IXGBE_FDIRCTRL, fdirctrl);
1146 IXGBE_WRITE_FLUSH(hw);
1147
1148 /* Poll init-done after we write FDIRCTRL register */
1149 for (i = 0; i < IXGBE_FDIR_INIT_DONE_POLL; i++) {
1150 if (IXGBE_READ_REG(hw, IXGBE_FDIRCTRL) &
1151 IXGBE_FDIRCTRL_INIT_DONE)
1152 break;
1153 usleep_range(1000, 2000);
1154 }
1155 if (i >= IXGBE_FDIR_INIT_DONE_POLL) {
1156 hw_dbg(hw, "Flow Director Signature poll time exceeded!\n");
1157 return -EIO;
1158 }
1159
1160 /* Clear FDIR statistics registers (read to clear) */
1161 IXGBE_READ_REG(hw, IXGBE_FDIRUSTAT);
1162 IXGBE_READ_REG(hw, IXGBE_FDIRFSTAT);
1163 IXGBE_READ_REG(hw, IXGBE_FDIRMATCH);
1164 IXGBE_READ_REG(hw, IXGBE_FDIRMISS);
1165 IXGBE_READ_REG(hw, IXGBE_FDIRLEN);
1166
1167 return 0;
1168 }
1169
1170 /**
1171 * ixgbe_fdir_enable_82599 - Initialize Flow Director control registers
1172 * @hw: pointer to hardware structure
1173 * @fdirctrl: value to write to flow director control register
1174 **/
ixgbe_fdir_enable_82599(struct ixgbe_hw * hw,u32 fdirctrl)1175 static void ixgbe_fdir_enable_82599(struct ixgbe_hw *hw, u32 fdirctrl)
1176 {
1177 int i;
1178
1179 /* Prime the keys for hashing */
1180 IXGBE_WRITE_REG(hw, IXGBE_FDIRHKEY, IXGBE_ATR_BUCKET_HASH_KEY);
1181 IXGBE_WRITE_REG(hw, IXGBE_FDIRSKEY, IXGBE_ATR_SIGNATURE_HASH_KEY);
1182
1183 /*
1184 * Poll init-done after we write the register. Estimated times:
1185 * 10G: PBALLOC = 11b, timing is 60us
1186 * 1G: PBALLOC = 11b, timing is 600us
1187 * 100M: PBALLOC = 11b, timing is 6ms
1188 *
1189 * Multiple these timings by 4 if under full Rx load
1190 *
1191 * So we'll poll for IXGBE_FDIR_INIT_DONE_POLL times, sleeping for
1192 * 1 msec per poll time. If we're at line rate and drop to 100M, then
1193 * this might not finish in our poll time, but we can live with that
1194 * for now.
1195 */
1196 IXGBE_WRITE_REG(hw, IXGBE_FDIRCTRL, fdirctrl);
1197 IXGBE_WRITE_FLUSH(hw);
1198 for (i = 0; i < IXGBE_FDIR_INIT_DONE_POLL; i++) {
1199 if (IXGBE_READ_REG(hw, IXGBE_FDIRCTRL) &
1200 IXGBE_FDIRCTRL_INIT_DONE)
1201 break;
1202 usleep_range(1000, 2000);
1203 }
1204
1205 if (i >= IXGBE_FDIR_INIT_DONE_POLL)
1206 hw_dbg(hw, "Flow Director poll time exceeded!\n");
1207 }
1208
1209 /**
1210 * ixgbe_init_fdir_signature_82599 - Initialize Flow Director signature filters
1211 * @hw: pointer to hardware structure
1212 * @fdirctrl: value to write to flow director control register, initially
1213 * contains just the value of the Rx packet buffer allocation
1214 **/
ixgbe_init_fdir_signature_82599(struct ixgbe_hw * hw,u32 fdirctrl)1215 s32 ixgbe_init_fdir_signature_82599(struct ixgbe_hw *hw, u32 fdirctrl)
1216 {
1217 /*
1218 * Continue setup of fdirctrl register bits:
1219 * Move the flexible bytes to use the ethertype - shift 6 words
1220 * Set the maximum length per hash bucket to 0xA filters
1221 * Send interrupt when 64 filters are left
1222 */
1223 fdirctrl |= (0x6 << IXGBE_FDIRCTRL_FLEX_SHIFT) |
1224 (0xA << IXGBE_FDIRCTRL_MAX_LENGTH_SHIFT) |
1225 (4 << IXGBE_FDIRCTRL_FULL_THRESH_SHIFT);
1226
1227 /* write hashes and fdirctrl register, poll for completion */
1228 ixgbe_fdir_enable_82599(hw, fdirctrl);
1229
1230 return 0;
1231 }
1232
1233 /**
1234 * ixgbe_init_fdir_perfect_82599 - Initialize Flow Director perfect filters
1235 * @hw: pointer to hardware structure
1236 * @fdirctrl: value to write to flow director control register, initially
1237 * contains just the value of the Rx packet buffer allocation
1238 **/
ixgbe_init_fdir_perfect_82599(struct ixgbe_hw * hw,u32 fdirctrl)1239 s32 ixgbe_init_fdir_perfect_82599(struct ixgbe_hw *hw, u32 fdirctrl)
1240 {
1241 /*
1242 * Continue setup of fdirctrl register bits:
1243 * Turn perfect match filtering on
1244 * Initialize the drop queue
1245 * Move the flexible bytes to use the ethertype - shift 6 words
1246 * Set the maximum length per hash bucket to 0xA filters
1247 * Send interrupt when 64 (0x4 * 16) filters are left
1248 */
1249 fdirctrl |= IXGBE_FDIRCTRL_PERFECT_MATCH |
1250 (IXGBE_FDIR_DROP_QUEUE << IXGBE_FDIRCTRL_DROP_Q_SHIFT) |
1251 (0x6 << IXGBE_FDIRCTRL_FLEX_SHIFT) |
1252 (0xA << IXGBE_FDIRCTRL_MAX_LENGTH_SHIFT) |
1253 (4 << IXGBE_FDIRCTRL_FULL_THRESH_SHIFT);
1254
1255 /* write hashes and fdirctrl register, poll for completion */
1256 ixgbe_fdir_enable_82599(hw, fdirctrl);
1257
1258 return 0;
1259 }
1260
1261 /*
1262 * These defines allow us to quickly generate all of the necessary instructions
1263 * in the function below by simply calling out IXGBE_COMPUTE_SIG_HASH_ITERATION
1264 * for values 0 through 15
1265 */
1266 #define IXGBE_ATR_COMMON_HASH_KEY \
1267 (IXGBE_ATR_BUCKET_HASH_KEY & IXGBE_ATR_SIGNATURE_HASH_KEY)
1268 #define IXGBE_COMPUTE_SIG_HASH_ITERATION(_n) \
1269 do { \
1270 u32 n = (_n); \
1271 if (IXGBE_ATR_COMMON_HASH_KEY & BIT(n)) \
1272 common_hash ^= lo_hash_dword >> n; \
1273 else if (IXGBE_ATR_BUCKET_HASH_KEY & BIT(n)) \
1274 bucket_hash ^= lo_hash_dword >> n; \
1275 else if (IXGBE_ATR_SIGNATURE_HASH_KEY & BIT(n)) \
1276 sig_hash ^= lo_hash_dword << (16 - n); \
1277 if (IXGBE_ATR_COMMON_HASH_KEY & BIT(n + 16)) \
1278 common_hash ^= hi_hash_dword >> n; \
1279 else if (IXGBE_ATR_BUCKET_HASH_KEY & BIT(n + 16)) \
1280 bucket_hash ^= hi_hash_dword >> n; \
1281 else if (IXGBE_ATR_SIGNATURE_HASH_KEY & BIT(n + 16)) \
1282 sig_hash ^= hi_hash_dword << (16 - n); \
1283 } while (0)
1284
1285 /**
1286 * ixgbe_atr_compute_sig_hash_82599 - Compute the signature hash
1287 * @input: input bitstream to compute the hash on
1288 * @common: compressed common input dword
1289 *
1290 * This function is almost identical to the function above but contains
1291 * several optimizations such as unwinding all of the loops, letting the
1292 * compiler work out all of the conditional ifs since the keys are static
1293 * defines, and computing two keys at once since the hashed dword stream
1294 * will be the same for both keys.
1295 **/
ixgbe_atr_compute_sig_hash_82599(union ixgbe_atr_hash_dword input,union ixgbe_atr_hash_dword common)1296 static u32 ixgbe_atr_compute_sig_hash_82599(union ixgbe_atr_hash_dword input,
1297 union ixgbe_atr_hash_dword common)
1298 {
1299 u32 hi_hash_dword, lo_hash_dword, flow_vm_vlan;
1300 u32 sig_hash = 0, bucket_hash = 0, common_hash = 0;
1301
1302 /* record the flow_vm_vlan bits as they are a key part to the hash */
1303 flow_vm_vlan = ntohl(input.dword);
1304
1305 /* generate common hash dword */
1306 hi_hash_dword = ntohl(common.dword);
1307
1308 /* low dword is word swapped version of common */
1309 lo_hash_dword = (hi_hash_dword >> 16) | (hi_hash_dword << 16);
1310
1311 /* apply flow ID/VM pool/VLAN ID bits to hash words */
1312 hi_hash_dword ^= flow_vm_vlan ^ (flow_vm_vlan >> 16);
1313
1314 /* Process bits 0 and 16 */
1315 IXGBE_COMPUTE_SIG_HASH_ITERATION(0);
1316
1317 /*
1318 * apply flow ID/VM pool/VLAN ID bits to lo hash dword, we had to
1319 * delay this because bit 0 of the stream should not be processed
1320 * so we do not add the vlan until after bit 0 was processed
1321 */
1322 lo_hash_dword ^= flow_vm_vlan ^ (flow_vm_vlan << 16);
1323
1324 /* Process remaining 30 bit of the key */
1325 IXGBE_COMPUTE_SIG_HASH_ITERATION(1);
1326 IXGBE_COMPUTE_SIG_HASH_ITERATION(2);
1327 IXGBE_COMPUTE_SIG_HASH_ITERATION(3);
1328 IXGBE_COMPUTE_SIG_HASH_ITERATION(4);
1329 IXGBE_COMPUTE_SIG_HASH_ITERATION(5);
1330 IXGBE_COMPUTE_SIG_HASH_ITERATION(6);
1331 IXGBE_COMPUTE_SIG_HASH_ITERATION(7);
1332 IXGBE_COMPUTE_SIG_HASH_ITERATION(8);
1333 IXGBE_COMPUTE_SIG_HASH_ITERATION(9);
1334 IXGBE_COMPUTE_SIG_HASH_ITERATION(10);
1335 IXGBE_COMPUTE_SIG_HASH_ITERATION(11);
1336 IXGBE_COMPUTE_SIG_HASH_ITERATION(12);
1337 IXGBE_COMPUTE_SIG_HASH_ITERATION(13);
1338 IXGBE_COMPUTE_SIG_HASH_ITERATION(14);
1339 IXGBE_COMPUTE_SIG_HASH_ITERATION(15);
1340
1341 /* combine common_hash result with signature and bucket hashes */
1342 bucket_hash ^= common_hash;
1343 bucket_hash &= IXGBE_ATR_HASH_MASK;
1344
1345 sig_hash ^= common_hash << 16;
1346 sig_hash &= IXGBE_ATR_HASH_MASK << 16;
1347
1348 /* return completed signature hash */
1349 return sig_hash ^ bucket_hash;
1350 }
1351
1352 /**
1353 * ixgbe_fdir_add_signature_filter_82599 - Adds a signature hash filter
1354 * @hw: pointer to hardware structure
1355 * @input: unique input dword
1356 * @common: compressed common input dword
1357 * @queue: queue index to direct traffic to
1358 *
1359 * Note that the tunnel bit in input must not be set when the hardware
1360 * tunneling support does not exist.
1361 **/
ixgbe_fdir_add_signature_filter_82599(struct ixgbe_hw * hw,union ixgbe_atr_hash_dword input,union ixgbe_atr_hash_dword common,u8 queue)1362 s32 ixgbe_fdir_add_signature_filter_82599(struct ixgbe_hw *hw,
1363 union ixgbe_atr_hash_dword input,
1364 union ixgbe_atr_hash_dword common,
1365 u8 queue)
1366 {
1367 u64 fdirhashcmd;
1368 u8 flow_type;
1369 bool tunnel;
1370 u32 fdircmd;
1371
1372 /*
1373 * Get the flow_type in order to program FDIRCMD properly
1374 * lowest 2 bits are FDIRCMD.L4TYPE, third lowest bit is FDIRCMD.IPV6
1375 */
1376 tunnel = !!(input.formatted.flow_type & IXGBE_ATR_L4TYPE_TUNNEL_MASK);
1377 flow_type = input.formatted.flow_type &
1378 (IXGBE_ATR_L4TYPE_TUNNEL_MASK - 1);
1379 switch (flow_type) {
1380 case IXGBE_ATR_FLOW_TYPE_TCPV4:
1381 case IXGBE_ATR_FLOW_TYPE_UDPV4:
1382 case IXGBE_ATR_FLOW_TYPE_SCTPV4:
1383 case IXGBE_ATR_FLOW_TYPE_TCPV6:
1384 case IXGBE_ATR_FLOW_TYPE_UDPV6:
1385 case IXGBE_ATR_FLOW_TYPE_SCTPV6:
1386 break;
1387 default:
1388 hw_dbg(hw, " Error on flow type input\n");
1389 return -EIO;
1390 }
1391
1392 /* configure FDIRCMD register */
1393 fdircmd = IXGBE_FDIRCMD_CMD_ADD_FLOW | IXGBE_FDIRCMD_FILTER_UPDATE |
1394 IXGBE_FDIRCMD_LAST | IXGBE_FDIRCMD_QUEUE_EN;
1395 fdircmd |= (u32)flow_type << IXGBE_FDIRCMD_FLOW_TYPE_SHIFT;
1396 fdircmd |= (u32)queue << IXGBE_FDIRCMD_RX_QUEUE_SHIFT;
1397 if (tunnel)
1398 fdircmd |= IXGBE_FDIRCMD_TUNNEL_FILTER;
1399
1400 /*
1401 * The lower 32-bits of fdirhashcmd is for FDIRHASH, the upper 32-bits
1402 * is for FDIRCMD. Then do a 64-bit register write from FDIRHASH.
1403 */
1404 fdirhashcmd = (u64)fdircmd << 32;
1405 fdirhashcmd |= ixgbe_atr_compute_sig_hash_82599(input, common);
1406 IXGBE_WRITE_REG64(hw, IXGBE_FDIRHASH, fdirhashcmd);
1407
1408 hw_dbg(hw, "Tx Queue=%x hash=%x\n", queue, (u32)fdirhashcmd);
1409
1410 return 0;
1411 }
1412
1413 #define IXGBE_COMPUTE_BKT_HASH_ITERATION(_n) \
1414 do { \
1415 u32 n = (_n); \
1416 if (IXGBE_ATR_BUCKET_HASH_KEY & BIT(n)) \
1417 bucket_hash ^= lo_hash_dword >> n; \
1418 if (IXGBE_ATR_BUCKET_HASH_KEY & BIT(n + 16)) \
1419 bucket_hash ^= hi_hash_dword >> n; \
1420 } while (0)
1421
1422 /**
1423 * ixgbe_atr_compute_perfect_hash_82599 - Compute the perfect filter hash
1424 * @input: input bitstream to compute the hash on
1425 * @input_mask: mask for the input bitstream
1426 *
1427 * This function serves two main purposes. First it applies the input_mask
1428 * to the atr_input resulting in a cleaned up atr_input data stream.
1429 * Secondly it computes the hash and stores it in the bkt_hash field at
1430 * the end of the input byte stream. This way it will be available for
1431 * future use without needing to recompute the hash.
1432 **/
ixgbe_atr_compute_perfect_hash_82599(union ixgbe_atr_input * input,union ixgbe_atr_input * input_mask)1433 void ixgbe_atr_compute_perfect_hash_82599(union ixgbe_atr_input *input,
1434 union ixgbe_atr_input *input_mask)
1435 {
1436
1437 u32 hi_hash_dword, lo_hash_dword, flow_vm_vlan;
1438 u32 bucket_hash = 0;
1439 __be32 hi_dword = 0;
1440 int i;
1441
1442 /* Apply masks to input data */
1443 for (i = 0; i <= 10; i++)
1444 input->dword_stream[i] &= input_mask->dword_stream[i];
1445
1446 /* record the flow_vm_vlan bits as they are a key part to the hash */
1447 flow_vm_vlan = ntohl(input->dword_stream[0]);
1448
1449 /* generate common hash dword */
1450 for (i = 1; i <= 10; i++)
1451 hi_dword ^= input->dword_stream[i];
1452 hi_hash_dword = ntohl(hi_dword);
1453
1454 /* low dword is word swapped version of common */
1455 lo_hash_dword = (hi_hash_dword >> 16) | (hi_hash_dword << 16);
1456
1457 /* apply flow ID/VM pool/VLAN ID bits to hash words */
1458 hi_hash_dword ^= flow_vm_vlan ^ (flow_vm_vlan >> 16);
1459
1460 /* Process bits 0 and 16 */
1461 IXGBE_COMPUTE_BKT_HASH_ITERATION(0);
1462
1463 /*
1464 * apply flow ID/VM pool/VLAN ID bits to lo hash dword, we had to
1465 * delay this because bit 0 of the stream should not be processed
1466 * so we do not add the vlan until after bit 0 was processed
1467 */
1468 lo_hash_dword ^= flow_vm_vlan ^ (flow_vm_vlan << 16);
1469
1470 /* Process remaining 30 bit of the key */
1471 for (i = 1; i <= 15; i++)
1472 IXGBE_COMPUTE_BKT_HASH_ITERATION(i);
1473
1474 /*
1475 * Limit hash to 13 bits since max bucket count is 8K.
1476 * Store result at the end of the input stream.
1477 */
1478 input->formatted.bkt_hash = (__force __be16)(bucket_hash & 0x1FFF);
1479 }
1480
1481 /**
1482 * ixgbe_get_fdirtcpm_82599 - generate a tcp port from atr_input_masks
1483 * @input_mask: mask to be bit swapped
1484 *
1485 * The source and destination port masks for flow director are bit swapped
1486 * in that bit 15 effects bit 0, 14 effects 1, 13, 2 etc. In order to
1487 * generate a correctly swapped value we need to bit swap the mask and that
1488 * is what is accomplished by this function.
1489 **/
ixgbe_get_fdirtcpm_82599(union ixgbe_atr_input * input_mask)1490 static u32 ixgbe_get_fdirtcpm_82599(union ixgbe_atr_input *input_mask)
1491 {
1492 u32 mask = ntohs(input_mask->formatted.dst_port);
1493
1494 mask <<= IXGBE_FDIRTCPM_DPORTM_SHIFT;
1495 mask |= ntohs(input_mask->formatted.src_port);
1496 mask = ((mask & 0x55555555) << 1) | ((mask & 0xAAAAAAAA) >> 1);
1497 mask = ((mask & 0x33333333) << 2) | ((mask & 0xCCCCCCCC) >> 2);
1498 mask = ((mask & 0x0F0F0F0F) << 4) | ((mask & 0xF0F0F0F0) >> 4);
1499 return ((mask & 0x00FF00FF) << 8) | ((mask & 0xFF00FF00) >> 8);
1500 }
1501
1502 /*
1503 * These two macros are meant to address the fact that we have registers
1504 * that are either all or in part big-endian. As a result on big-endian
1505 * systems we will end up byte swapping the value to little-endian before
1506 * it is byte swapped again and written to the hardware in the original
1507 * big-endian format.
1508 */
1509 #define IXGBE_STORE_AS_BE32(_value) \
1510 (((u32)(_value) >> 24) | (((u32)(_value) & 0x00FF0000) >> 8) | \
1511 (((u32)(_value) & 0x0000FF00) << 8) | ((u32)(_value) << 24))
1512
1513 #define IXGBE_WRITE_REG_BE32(a, reg, value) \
1514 IXGBE_WRITE_REG((a), (reg), IXGBE_STORE_AS_BE32(ntohl(value)))
1515
1516 #define IXGBE_STORE_AS_BE16(_value) __swab16(ntohs((_value)))
1517
ixgbe_fdir_set_input_mask_82599(struct ixgbe_hw * hw,union ixgbe_atr_input * input_mask)1518 s32 ixgbe_fdir_set_input_mask_82599(struct ixgbe_hw *hw,
1519 union ixgbe_atr_input *input_mask)
1520 {
1521 /* mask IPv6 since it is currently not supported */
1522 u32 fdirm = IXGBE_FDIRM_DIPv6;
1523 u32 fdirtcpm;
1524
1525 /*
1526 * Program the relevant mask registers. If src/dst_port or src/dst_addr
1527 * are zero, then assume a full mask for that field. Also assume that
1528 * a VLAN of 0 is unspecified, so mask that out as well. L4type
1529 * cannot be masked out in this implementation.
1530 *
1531 * This also assumes IPv4 only. IPv6 masking isn't supported at this
1532 * point in time.
1533 */
1534
1535 /* verify bucket hash is cleared on hash generation */
1536 if (input_mask->formatted.bkt_hash)
1537 hw_dbg(hw, " bucket hash should always be 0 in mask\n");
1538
1539 /* Program FDIRM and verify partial masks */
1540 switch (input_mask->formatted.vm_pool & 0x7F) {
1541 case 0x0:
1542 fdirm |= IXGBE_FDIRM_POOL;
1543 break;
1544 case 0x7F:
1545 break;
1546 default:
1547 hw_dbg(hw, " Error on vm pool mask\n");
1548 return -EIO;
1549 }
1550
1551 switch (input_mask->formatted.flow_type & IXGBE_ATR_L4TYPE_MASK) {
1552 case 0x0:
1553 fdirm |= IXGBE_FDIRM_L4P;
1554 if (input_mask->formatted.dst_port ||
1555 input_mask->formatted.src_port) {
1556 hw_dbg(hw, " Error on src/dst port mask\n");
1557 return -EIO;
1558 }
1559 break;
1560 case IXGBE_ATR_L4TYPE_MASK:
1561 break;
1562 default:
1563 hw_dbg(hw, " Error on flow type mask\n");
1564 return -EIO;
1565 }
1566
1567 switch (ntohs(input_mask->formatted.vlan_id) & 0xEFFF) {
1568 case 0x0000:
1569 /* mask VLAN ID */
1570 fdirm |= IXGBE_FDIRM_VLANID;
1571 fallthrough;
1572 case 0x0FFF:
1573 /* mask VLAN priority */
1574 fdirm |= IXGBE_FDIRM_VLANP;
1575 break;
1576 case 0xE000:
1577 /* mask VLAN ID only */
1578 fdirm |= IXGBE_FDIRM_VLANID;
1579 fallthrough;
1580 case 0xEFFF:
1581 /* no VLAN fields masked */
1582 break;
1583 default:
1584 hw_dbg(hw, " Error on VLAN mask\n");
1585 return -EIO;
1586 }
1587
1588 switch ((__force u16)input_mask->formatted.flex_bytes & 0xFFFF) {
1589 case 0x0000:
1590 /* Mask Flex Bytes */
1591 fdirm |= IXGBE_FDIRM_FLEX;
1592 fallthrough;
1593 case 0xFFFF:
1594 break;
1595 default:
1596 hw_dbg(hw, " Error on flexible byte mask\n");
1597 return -EIO;
1598 }
1599
1600 /* Now mask VM pool and destination IPv6 - bits 5 and 2 */
1601 IXGBE_WRITE_REG(hw, IXGBE_FDIRM, fdirm);
1602
1603 /* store the TCP/UDP port masks, bit reversed from port layout */
1604 fdirtcpm = ixgbe_get_fdirtcpm_82599(input_mask);
1605
1606 /* write both the same so that UDP and TCP use the same mask */
1607 IXGBE_WRITE_REG(hw, IXGBE_FDIRTCPM, ~fdirtcpm);
1608 IXGBE_WRITE_REG(hw, IXGBE_FDIRUDPM, ~fdirtcpm);
1609
1610 /* also use it for SCTP */
1611 switch (hw->mac.type) {
1612 case ixgbe_mac_X550:
1613 case ixgbe_mac_X550EM_x:
1614 case ixgbe_mac_x550em_a:
1615 IXGBE_WRITE_REG(hw, IXGBE_FDIRSCTPM, ~fdirtcpm);
1616 break;
1617 default:
1618 break;
1619 }
1620
1621 /* store source and destination IP masks (big-enian) */
1622 IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRSIP4M,
1623 ~input_mask->formatted.src_ip[0]);
1624 IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRDIP4M,
1625 ~input_mask->formatted.dst_ip[0]);
1626
1627 return 0;
1628 }
1629
ixgbe_fdir_write_perfect_filter_82599(struct ixgbe_hw * hw,union ixgbe_atr_input * input,u16 soft_id,u8 queue)1630 s32 ixgbe_fdir_write_perfect_filter_82599(struct ixgbe_hw *hw,
1631 union ixgbe_atr_input *input,
1632 u16 soft_id, u8 queue)
1633 {
1634 u32 fdirport, fdirvlan, fdirhash, fdircmd;
1635 s32 err;
1636
1637 /* currently IPv6 is not supported, must be programmed with 0 */
1638 IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRSIPv6(0),
1639 input->formatted.src_ip[0]);
1640 IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRSIPv6(1),
1641 input->formatted.src_ip[1]);
1642 IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRSIPv6(2),
1643 input->formatted.src_ip[2]);
1644
1645 /* record the source address (big-endian) */
1646 IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRIPSA, input->formatted.src_ip[0]);
1647
1648 /* record the first 32 bits of the destination address (big-endian) */
1649 IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRIPDA, input->formatted.dst_ip[0]);
1650
1651 /* record source and destination port (little-endian)*/
1652 fdirport = be16_to_cpu(input->formatted.dst_port);
1653 fdirport <<= IXGBE_FDIRPORT_DESTINATION_SHIFT;
1654 fdirport |= be16_to_cpu(input->formatted.src_port);
1655 IXGBE_WRITE_REG(hw, IXGBE_FDIRPORT, fdirport);
1656
1657 /* record vlan (little-endian) and flex_bytes(big-endian) */
1658 fdirvlan = IXGBE_STORE_AS_BE16(input->formatted.flex_bytes);
1659 fdirvlan <<= IXGBE_FDIRVLAN_FLEX_SHIFT;
1660 fdirvlan |= ntohs(input->formatted.vlan_id);
1661 IXGBE_WRITE_REG(hw, IXGBE_FDIRVLAN, fdirvlan);
1662
1663 /* configure FDIRHASH register */
1664 fdirhash = (__force u32)input->formatted.bkt_hash;
1665 fdirhash |= soft_id << IXGBE_FDIRHASH_SIG_SW_INDEX_SHIFT;
1666 IXGBE_WRITE_REG(hw, IXGBE_FDIRHASH, fdirhash);
1667
1668 /*
1669 * flush all previous writes to make certain registers are
1670 * programmed prior to issuing the command
1671 */
1672 IXGBE_WRITE_FLUSH(hw);
1673
1674 /* configure FDIRCMD register */
1675 fdircmd = IXGBE_FDIRCMD_CMD_ADD_FLOW | IXGBE_FDIRCMD_FILTER_UPDATE |
1676 IXGBE_FDIRCMD_LAST | IXGBE_FDIRCMD_QUEUE_EN;
1677 if (queue == IXGBE_FDIR_DROP_QUEUE)
1678 fdircmd |= IXGBE_FDIRCMD_DROP;
1679 fdircmd |= input->formatted.flow_type << IXGBE_FDIRCMD_FLOW_TYPE_SHIFT;
1680 fdircmd |= (u32)queue << IXGBE_FDIRCMD_RX_QUEUE_SHIFT;
1681 fdircmd |= (u32)input->formatted.vm_pool << IXGBE_FDIRCMD_VT_POOL_SHIFT;
1682
1683 IXGBE_WRITE_REG(hw, IXGBE_FDIRCMD, fdircmd);
1684 err = ixgbe_fdir_check_cmd_complete(hw, &fdircmd);
1685 if (err) {
1686 hw_dbg(hw, "Flow Director command did not complete!\n");
1687 return err;
1688 }
1689
1690 return 0;
1691 }
1692
ixgbe_fdir_erase_perfect_filter_82599(struct ixgbe_hw * hw,union ixgbe_atr_input * input,u16 soft_id)1693 s32 ixgbe_fdir_erase_perfect_filter_82599(struct ixgbe_hw *hw,
1694 union ixgbe_atr_input *input,
1695 u16 soft_id)
1696 {
1697 u32 fdirhash;
1698 u32 fdircmd;
1699 s32 err;
1700
1701 /* configure FDIRHASH register */
1702 fdirhash = (__force u32)input->formatted.bkt_hash;
1703 fdirhash |= soft_id << IXGBE_FDIRHASH_SIG_SW_INDEX_SHIFT;
1704 IXGBE_WRITE_REG(hw, IXGBE_FDIRHASH, fdirhash);
1705
1706 /* flush hash to HW */
1707 IXGBE_WRITE_FLUSH(hw);
1708
1709 /* Query if filter is present */
1710 IXGBE_WRITE_REG(hw, IXGBE_FDIRCMD, IXGBE_FDIRCMD_CMD_QUERY_REM_FILT);
1711
1712 err = ixgbe_fdir_check_cmd_complete(hw, &fdircmd);
1713 if (err) {
1714 hw_dbg(hw, "Flow Director command did not complete!\n");
1715 return err;
1716 }
1717
1718 /* if filter exists in hardware then remove it */
1719 if (fdircmd & IXGBE_FDIRCMD_FILTER_VALID) {
1720 IXGBE_WRITE_REG(hw, IXGBE_FDIRHASH, fdirhash);
1721 IXGBE_WRITE_FLUSH(hw);
1722 IXGBE_WRITE_REG(hw, IXGBE_FDIRCMD,
1723 IXGBE_FDIRCMD_CMD_REMOVE_FLOW);
1724 }
1725
1726 return 0;
1727 }
1728
1729 /**
1730 * ixgbe_read_analog_reg8_82599 - Reads 8 bit Omer analog register
1731 * @hw: pointer to hardware structure
1732 * @reg: analog register to read
1733 * @val: read value
1734 *
1735 * Performs read operation to Omer analog register specified.
1736 **/
ixgbe_read_analog_reg8_82599(struct ixgbe_hw * hw,u32 reg,u8 * val)1737 static s32 ixgbe_read_analog_reg8_82599(struct ixgbe_hw *hw, u32 reg, u8 *val)
1738 {
1739 u32 core_ctl;
1740
1741 IXGBE_WRITE_REG(hw, IXGBE_CORECTL, IXGBE_CORECTL_WRITE_CMD |
1742 (reg << 8));
1743 IXGBE_WRITE_FLUSH(hw);
1744 udelay(10);
1745 core_ctl = IXGBE_READ_REG(hw, IXGBE_CORECTL);
1746 *val = (u8)core_ctl;
1747
1748 return 0;
1749 }
1750
1751 /**
1752 * ixgbe_write_analog_reg8_82599 - Writes 8 bit Omer analog register
1753 * @hw: pointer to hardware structure
1754 * @reg: atlas register to write
1755 * @val: value to write
1756 *
1757 * Performs write operation to Omer analog register specified.
1758 **/
ixgbe_write_analog_reg8_82599(struct ixgbe_hw * hw,u32 reg,u8 val)1759 static s32 ixgbe_write_analog_reg8_82599(struct ixgbe_hw *hw, u32 reg, u8 val)
1760 {
1761 u32 core_ctl;
1762
1763 core_ctl = (reg << 8) | val;
1764 IXGBE_WRITE_REG(hw, IXGBE_CORECTL, core_ctl);
1765 IXGBE_WRITE_FLUSH(hw);
1766 udelay(10);
1767
1768 return 0;
1769 }
1770
1771 /**
1772 * ixgbe_start_hw_82599 - Prepare hardware for Tx/Rx
1773 * @hw: pointer to hardware structure
1774 *
1775 * Starts the hardware using the generic start_hw function
1776 * and the generation start_hw function.
1777 * Then performs revision-specific operations, if any.
1778 **/
ixgbe_start_hw_82599(struct ixgbe_hw * hw)1779 static s32 ixgbe_start_hw_82599(struct ixgbe_hw *hw)
1780 {
1781 s32 ret_val = 0;
1782
1783 ret_val = ixgbe_start_hw_generic(hw);
1784 if (ret_val)
1785 return ret_val;
1786
1787 ret_val = ixgbe_start_hw_gen2(hw);
1788 if (ret_val)
1789 return ret_val;
1790
1791 /* We need to run link autotry after the driver loads */
1792 hw->mac.autotry_restart = true;
1793
1794 return ixgbe_verify_fw_version_82599(hw);
1795 }
1796
1797 /**
1798 * ixgbe_identify_phy_82599 - Get physical layer module
1799 * @hw: pointer to hardware structure
1800 *
1801 * Determines the physical layer module found on the current adapter.
1802 * If PHY already detected, maintains current PHY type in hw struct,
1803 * otherwise executes the PHY detection routine.
1804 **/
ixgbe_identify_phy_82599(struct ixgbe_hw * hw)1805 static s32 ixgbe_identify_phy_82599(struct ixgbe_hw *hw)
1806 {
1807 s32 status;
1808
1809 /* Detect PHY if not unknown - returns success if already detected. */
1810 status = ixgbe_identify_phy_generic(hw);
1811 if (status) {
1812 /* 82599 10GBASE-T requires an external PHY */
1813 if (hw->mac.ops.get_media_type(hw) == ixgbe_media_type_copper)
1814 return status;
1815 status = ixgbe_identify_module_generic(hw);
1816 }
1817
1818 /* Set PHY type none if no PHY detected */
1819 if (hw->phy.type == ixgbe_phy_unknown) {
1820 hw->phy.type = ixgbe_phy_none;
1821 status = 0;
1822 }
1823
1824 /* Return error if SFP module has been detected but is not supported */
1825 if (hw->phy.type == ixgbe_phy_sfp_unsupported)
1826 return -EOPNOTSUPP;
1827
1828 return status;
1829 }
1830
1831 /**
1832 * ixgbe_enable_rx_dma_82599 - Enable the Rx DMA unit on 82599
1833 * @hw: pointer to hardware structure
1834 * @regval: register value to write to RXCTRL
1835 *
1836 * Enables the Rx DMA unit for 82599
1837 **/
ixgbe_enable_rx_dma_82599(struct ixgbe_hw * hw,u32 regval)1838 static s32 ixgbe_enable_rx_dma_82599(struct ixgbe_hw *hw, u32 regval)
1839 {
1840 /*
1841 * Workaround for 82599 silicon errata when enabling the Rx datapath.
1842 * If traffic is incoming before we enable the Rx unit, it could hang
1843 * the Rx DMA unit. Therefore, make sure the security engine is
1844 * completely disabled prior to enabling the Rx unit.
1845 */
1846 hw->mac.ops.disable_rx_buff(hw);
1847
1848 if (regval & IXGBE_RXCTRL_RXEN)
1849 hw->mac.ops.enable_rx(hw);
1850 else
1851 hw->mac.ops.disable_rx(hw);
1852
1853 hw->mac.ops.enable_rx_buff(hw);
1854
1855 return 0;
1856 }
1857
1858 /**
1859 * ixgbe_verify_fw_version_82599 - verify fw version for 82599
1860 * @hw: pointer to hardware structure
1861 *
1862 * Verifies that installed the firmware version is 0.6 or higher
1863 * for SFI devices. All 82599 SFI devices should have version 0.6 or higher.
1864 *
1865 * Return: -EACCES if the FW is not present or if the FW version is
1866 * not supported.
1867 **/
ixgbe_verify_fw_version_82599(struct ixgbe_hw * hw)1868 static s32 ixgbe_verify_fw_version_82599(struct ixgbe_hw *hw)
1869 {
1870 u16 fw_offset, fw_ptp_cfg_offset;
1871 s32 status = -EACCES;
1872 u16 offset;
1873 u16 fw_version = 0;
1874
1875 /* firmware check is only necessary for SFI devices */
1876 if (hw->phy.media_type != ixgbe_media_type_fiber)
1877 return 0;
1878
1879 /* get the offset to the Firmware Module block */
1880 offset = IXGBE_FW_PTR;
1881 if (hw->eeprom.ops.read(hw, offset, &fw_offset))
1882 goto fw_version_err;
1883
1884 if (fw_offset == 0 || fw_offset == 0xFFFF)
1885 return -EACCES;
1886
1887 /* get the offset to the Pass Through Patch Configuration block */
1888 offset = fw_offset + IXGBE_FW_PASSTHROUGH_PATCH_CONFIG_PTR;
1889 if (hw->eeprom.ops.read(hw, offset, &fw_ptp_cfg_offset))
1890 goto fw_version_err;
1891
1892 if (fw_ptp_cfg_offset == 0 || fw_ptp_cfg_offset == 0xFFFF)
1893 return -EACCES;
1894
1895 /* get the firmware version */
1896 offset = fw_ptp_cfg_offset + IXGBE_FW_PATCH_VERSION_4;
1897 if (hw->eeprom.ops.read(hw, offset, &fw_version))
1898 goto fw_version_err;
1899
1900 if (fw_version > 0x5)
1901 status = 0;
1902
1903 return status;
1904
1905 fw_version_err:
1906 hw_err(hw, "eeprom read at offset %d failed\n", offset);
1907 return -EACCES;
1908 }
1909
1910 /**
1911 * ixgbe_verify_lesm_fw_enabled_82599 - Checks LESM FW module state.
1912 * @hw: pointer to hardware structure
1913 *
1914 * Returns true if the LESM FW module is present and enabled. Otherwise
1915 * returns false. Smart Speed must be disabled if LESM FW module is enabled.
1916 **/
ixgbe_verify_lesm_fw_enabled_82599(struct ixgbe_hw * hw)1917 static bool ixgbe_verify_lesm_fw_enabled_82599(struct ixgbe_hw *hw)
1918 {
1919 u16 fw_offset, fw_lesm_param_offset, fw_lesm_state;
1920 s32 status;
1921
1922 /* get the offset to the Firmware Module block */
1923 status = hw->eeprom.ops.read(hw, IXGBE_FW_PTR, &fw_offset);
1924
1925 if (status || fw_offset == 0 || fw_offset == 0xFFFF)
1926 return false;
1927
1928 /* get the offset to the LESM Parameters block */
1929 status = hw->eeprom.ops.read(hw, (fw_offset +
1930 IXGBE_FW_LESM_PARAMETERS_PTR),
1931 &fw_lesm_param_offset);
1932
1933 if (status ||
1934 fw_lesm_param_offset == 0 || fw_lesm_param_offset == 0xFFFF)
1935 return false;
1936
1937 /* get the lesm state word */
1938 status = hw->eeprom.ops.read(hw, (fw_lesm_param_offset +
1939 IXGBE_FW_LESM_STATE_1),
1940 &fw_lesm_state);
1941
1942 if (!status && (fw_lesm_state & IXGBE_FW_LESM_STATE_ENABLED))
1943 return true;
1944
1945 return false;
1946 }
1947
1948 /**
1949 * ixgbe_read_eeprom_buffer_82599 - Read EEPROM word(s) using
1950 * fastest available method
1951 *
1952 * @hw: pointer to hardware structure
1953 * @offset: offset of word in EEPROM to read
1954 * @words: number of words
1955 * @data: word(s) read from the EEPROM
1956 *
1957 * Retrieves 16 bit word(s) read from EEPROM
1958 **/
ixgbe_read_eeprom_buffer_82599(struct ixgbe_hw * hw,u16 offset,u16 words,u16 * data)1959 static s32 ixgbe_read_eeprom_buffer_82599(struct ixgbe_hw *hw, u16 offset,
1960 u16 words, u16 *data)
1961 {
1962 struct ixgbe_eeprom_info *eeprom = &hw->eeprom;
1963
1964 /* If EEPROM is detected and can be addressed using 14 bits,
1965 * use EERD otherwise use bit bang
1966 */
1967 if (eeprom->type == ixgbe_eeprom_spi &&
1968 offset + (words - 1) <= IXGBE_EERD_MAX_ADDR)
1969 return ixgbe_read_eerd_buffer_generic(hw, offset, words, data);
1970
1971 return ixgbe_read_eeprom_buffer_bit_bang_generic(hw, offset, words,
1972 data);
1973 }
1974
1975 /**
1976 * ixgbe_read_eeprom_82599 - Read EEPROM word using
1977 * fastest available method
1978 *
1979 * @hw: pointer to hardware structure
1980 * @offset: offset of word in the EEPROM to read
1981 * @data: word read from the EEPROM
1982 *
1983 * Reads a 16 bit word from the EEPROM
1984 **/
ixgbe_read_eeprom_82599(struct ixgbe_hw * hw,u16 offset,u16 * data)1985 static s32 ixgbe_read_eeprom_82599(struct ixgbe_hw *hw,
1986 u16 offset, u16 *data)
1987 {
1988 struct ixgbe_eeprom_info *eeprom = &hw->eeprom;
1989
1990 /*
1991 * If EEPROM is detected and can be addressed using 14 bits,
1992 * use EERD otherwise use bit bang
1993 */
1994 if (eeprom->type == ixgbe_eeprom_spi && offset <= IXGBE_EERD_MAX_ADDR)
1995 return ixgbe_read_eerd_generic(hw, offset, data);
1996
1997 return ixgbe_read_eeprom_bit_bang_generic(hw, offset, data);
1998 }
1999
2000 /**
2001 * ixgbe_reset_pipeline_82599 - perform pipeline reset
2002 *
2003 * @hw: pointer to hardware structure
2004 *
2005 * Reset pipeline by asserting Restart_AN together with LMS change to ensure
2006 * full pipeline reset. Note - We must hold the SW/FW semaphore before writing
2007 * to AUTOC, so this function assumes the semaphore is held.
2008 **/
ixgbe_reset_pipeline_82599(struct ixgbe_hw * hw)2009 static s32 ixgbe_reset_pipeline_82599(struct ixgbe_hw *hw)
2010 {
2011 s32 ret_val;
2012 u32 anlp1_reg = 0;
2013 u32 i, autoc_reg, autoc2_reg;
2014
2015 /* Enable link if disabled in NVM */
2016 autoc2_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC2);
2017 if (autoc2_reg & IXGBE_AUTOC2_LINK_DISABLE_MASK) {
2018 autoc2_reg &= ~IXGBE_AUTOC2_LINK_DISABLE_MASK;
2019 IXGBE_WRITE_REG(hw, IXGBE_AUTOC2, autoc2_reg);
2020 IXGBE_WRITE_FLUSH(hw);
2021 }
2022
2023 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
2024 autoc_reg |= IXGBE_AUTOC_AN_RESTART;
2025
2026 /* Write AUTOC register with toggled LMS[2] bit and Restart_AN */
2027 IXGBE_WRITE_REG(hw, IXGBE_AUTOC,
2028 autoc_reg ^ (0x4 << IXGBE_AUTOC_LMS_SHIFT));
2029
2030 /* Wait for AN to leave state 0 */
2031 for (i = 0; i < 10; i++) {
2032 usleep_range(4000, 8000);
2033 anlp1_reg = IXGBE_READ_REG(hw, IXGBE_ANLP1);
2034 if (anlp1_reg & IXGBE_ANLP1_AN_STATE_MASK)
2035 break;
2036 }
2037
2038 if (!(anlp1_reg & IXGBE_ANLP1_AN_STATE_MASK)) {
2039 hw_dbg(hw, "auto negotiation not completed\n");
2040 ret_val = -EIO;
2041 goto reset_pipeline_out;
2042 }
2043
2044 ret_val = 0;
2045
2046 reset_pipeline_out:
2047 /* Write AUTOC register with original LMS field and Restart_AN */
2048 IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc_reg);
2049 IXGBE_WRITE_FLUSH(hw);
2050
2051 return ret_val;
2052 }
2053
2054 /**
2055 * ixgbe_read_i2c_byte_82599 - Reads 8 bit word over I2C
2056 * @hw: pointer to hardware structure
2057 * @byte_offset: byte offset to read
2058 * @dev_addr: address to read from
2059 * @data: value read
2060 *
2061 * Performs byte read operation to SFP module's EEPROM over I2C interface at
2062 * a specified device address.
2063 **/
ixgbe_read_i2c_byte_82599(struct ixgbe_hw * hw,u8 byte_offset,u8 dev_addr,u8 * data)2064 static s32 ixgbe_read_i2c_byte_82599(struct ixgbe_hw *hw, u8 byte_offset,
2065 u8 dev_addr, u8 *data)
2066 {
2067 u32 esdp;
2068 s32 status;
2069 s32 timeout = 200;
2070
2071 if (hw->phy.qsfp_shared_i2c_bus == true) {
2072 /* Acquire I2C bus ownership. */
2073 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
2074 esdp |= IXGBE_ESDP_SDP0;
2075 IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp);
2076 IXGBE_WRITE_FLUSH(hw);
2077
2078 while (timeout) {
2079 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
2080 if (esdp & IXGBE_ESDP_SDP1)
2081 break;
2082
2083 usleep_range(5000, 10000);
2084 timeout--;
2085 }
2086
2087 if (!timeout) {
2088 hw_dbg(hw, "Driver can't access resource, acquiring I2C bus timeout.\n");
2089 status = -EIO;
2090 goto release_i2c_access;
2091 }
2092 }
2093
2094 status = ixgbe_read_i2c_byte_generic(hw, byte_offset, dev_addr, data);
2095
2096 release_i2c_access:
2097 if (hw->phy.qsfp_shared_i2c_bus == true) {
2098 /* Release I2C bus ownership. */
2099 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
2100 esdp &= ~IXGBE_ESDP_SDP0;
2101 IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp);
2102 IXGBE_WRITE_FLUSH(hw);
2103 }
2104
2105 return status;
2106 }
2107
2108 /**
2109 * ixgbe_write_i2c_byte_82599 - Writes 8 bit word over I2C
2110 * @hw: pointer to hardware structure
2111 * @byte_offset: byte offset to write
2112 * @dev_addr: address to write to
2113 * @data: value to write
2114 *
2115 * Performs byte write operation to SFP module's EEPROM over I2C interface at
2116 * a specified device address.
2117 **/
ixgbe_write_i2c_byte_82599(struct ixgbe_hw * hw,u8 byte_offset,u8 dev_addr,u8 data)2118 static s32 ixgbe_write_i2c_byte_82599(struct ixgbe_hw *hw, u8 byte_offset,
2119 u8 dev_addr, u8 data)
2120 {
2121 u32 esdp;
2122 s32 status;
2123 s32 timeout = 200;
2124
2125 if (hw->phy.qsfp_shared_i2c_bus == true) {
2126 /* Acquire I2C bus ownership. */
2127 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
2128 esdp |= IXGBE_ESDP_SDP0;
2129 IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp);
2130 IXGBE_WRITE_FLUSH(hw);
2131
2132 while (timeout) {
2133 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
2134 if (esdp & IXGBE_ESDP_SDP1)
2135 break;
2136
2137 usleep_range(5000, 10000);
2138 timeout--;
2139 }
2140
2141 if (!timeout) {
2142 hw_dbg(hw, "Driver can't access resource, acquiring I2C bus timeout.\n");
2143 status = -EIO;
2144 goto release_i2c_access;
2145 }
2146 }
2147
2148 status = ixgbe_write_i2c_byte_generic(hw, byte_offset, dev_addr, data);
2149
2150 release_i2c_access:
2151 if (hw->phy.qsfp_shared_i2c_bus == true) {
2152 /* Release I2C bus ownership. */
2153 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
2154 esdp &= ~IXGBE_ESDP_SDP0;
2155 IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp);
2156 IXGBE_WRITE_FLUSH(hw);
2157 }
2158
2159 return status;
2160 }
2161
2162 static const struct ixgbe_mac_operations mac_ops_82599 = {
2163 .init_hw = &ixgbe_init_hw_generic,
2164 .reset_hw = &ixgbe_reset_hw_82599,
2165 .start_hw = &ixgbe_start_hw_82599,
2166 .clear_hw_cntrs = &ixgbe_clear_hw_cntrs_generic,
2167 .get_media_type = &ixgbe_get_media_type_82599,
2168 .enable_rx_dma = &ixgbe_enable_rx_dma_82599,
2169 .disable_rx_buff = &ixgbe_disable_rx_buff_generic,
2170 .enable_rx_buff = &ixgbe_enable_rx_buff_generic,
2171 .get_mac_addr = &ixgbe_get_mac_addr_generic,
2172 .get_san_mac_addr = &ixgbe_get_san_mac_addr_generic,
2173 .get_device_caps = &ixgbe_get_device_caps_generic,
2174 .get_wwn_prefix = &ixgbe_get_wwn_prefix_generic,
2175 .stop_adapter = &ixgbe_stop_adapter_generic,
2176 .get_bus_info = &ixgbe_get_bus_info_generic,
2177 .set_lan_id = &ixgbe_set_lan_id_multi_port_pcie,
2178 .read_analog_reg8 = &ixgbe_read_analog_reg8_82599,
2179 .write_analog_reg8 = &ixgbe_write_analog_reg8_82599,
2180 .stop_link_on_d3 = &ixgbe_stop_mac_link_on_d3_82599,
2181 .setup_link = &ixgbe_setup_mac_link_82599,
2182 .set_rxpba = &ixgbe_set_rxpba_generic,
2183 .check_link = &ixgbe_check_mac_link_generic,
2184 .get_link_capabilities = &ixgbe_get_link_capabilities_82599,
2185 .led_on = &ixgbe_led_on_generic,
2186 .led_off = &ixgbe_led_off_generic,
2187 .init_led_link_act = ixgbe_init_led_link_act_generic,
2188 .blink_led_start = &ixgbe_blink_led_start_generic,
2189 .blink_led_stop = &ixgbe_blink_led_stop_generic,
2190 .set_rar = &ixgbe_set_rar_generic,
2191 .clear_rar = &ixgbe_clear_rar_generic,
2192 .set_vmdq = &ixgbe_set_vmdq_generic,
2193 .set_vmdq_san_mac = &ixgbe_set_vmdq_san_mac_generic,
2194 .clear_vmdq = &ixgbe_clear_vmdq_generic,
2195 .init_rx_addrs = &ixgbe_init_rx_addrs_generic,
2196 .update_mc_addr_list = &ixgbe_update_mc_addr_list_generic,
2197 .enable_mc = &ixgbe_enable_mc_generic,
2198 .disable_mc = &ixgbe_disable_mc_generic,
2199 .clear_vfta = &ixgbe_clear_vfta_generic,
2200 .set_vfta = &ixgbe_set_vfta_generic,
2201 .fc_enable = &ixgbe_fc_enable_generic,
2202 .setup_fc = ixgbe_setup_fc_generic,
2203 .fc_autoneg = ixgbe_fc_autoneg,
2204 .set_fw_drv_ver = &ixgbe_set_fw_drv_ver_generic,
2205 .init_uta_tables = &ixgbe_init_uta_tables_generic,
2206 .setup_sfp = &ixgbe_setup_sfp_modules_82599,
2207 .set_mac_anti_spoofing = &ixgbe_set_mac_anti_spoofing,
2208 .set_vlan_anti_spoofing = &ixgbe_set_vlan_anti_spoofing,
2209 .acquire_swfw_sync = &ixgbe_acquire_swfw_sync,
2210 .release_swfw_sync = &ixgbe_release_swfw_sync,
2211 .init_swfw_sync = NULL,
2212 .get_thermal_sensor_data = &ixgbe_get_thermal_sensor_data_generic,
2213 .init_thermal_sensor_thresh = &ixgbe_init_thermal_sensor_thresh_generic,
2214 .prot_autoc_read = &prot_autoc_read_82599,
2215 .prot_autoc_write = &prot_autoc_write_82599,
2216 .enable_rx = &ixgbe_enable_rx_generic,
2217 .disable_rx = &ixgbe_disable_rx_generic,
2218 };
2219
2220 static const struct ixgbe_eeprom_operations eeprom_ops_82599 = {
2221 .init_params = &ixgbe_init_eeprom_params_generic,
2222 .read = &ixgbe_read_eeprom_82599,
2223 .read_buffer = &ixgbe_read_eeprom_buffer_82599,
2224 .write = &ixgbe_write_eeprom_generic,
2225 .write_buffer = &ixgbe_write_eeprom_buffer_bit_bang_generic,
2226 .calc_checksum = &ixgbe_calc_eeprom_checksum_generic,
2227 .validate_checksum = &ixgbe_validate_eeprom_checksum_generic,
2228 .update_checksum = &ixgbe_update_eeprom_checksum_generic,
2229 };
2230
2231 static const struct ixgbe_phy_operations phy_ops_82599 = {
2232 .identify = &ixgbe_identify_phy_82599,
2233 .identify_sfp = &ixgbe_identify_module_generic,
2234 .init = &ixgbe_init_phy_ops_82599,
2235 .reset = &ixgbe_reset_phy_generic,
2236 .read_reg = &ixgbe_read_phy_reg_generic,
2237 .write_reg = &ixgbe_write_phy_reg_generic,
2238 .setup_link = &ixgbe_setup_phy_link_generic,
2239 .setup_link_speed = &ixgbe_setup_phy_link_speed_generic,
2240 .read_i2c_byte = &ixgbe_read_i2c_byte_generic,
2241 .write_i2c_byte = &ixgbe_write_i2c_byte_generic,
2242 .read_i2c_sff8472 = &ixgbe_read_i2c_sff8472_generic,
2243 .read_i2c_eeprom = &ixgbe_read_i2c_eeprom_generic,
2244 .write_i2c_eeprom = &ixgbe_write_i2c_eeprom_generic,
2245 .check_overtemp = &ixgbe_tn_check_overtemp,
2246 };
2247
2248 const struct ixgbe_info ixgbe_82599_info = {
2249 .mac = ixgbe_mac_82599EB,
2250 .get_invariants = &ixgbe_get_invariants_82599,
2251 .mac_ops = &mac_ops_82599,
2252 .eeprom_ops = &eeprom_ops_82599,
2253 .phy_ops = &phy_ops_82599,
2254 .mbx_ops = &mbx_ops_generic,
2255 .mvals = ixgbe_mvals_8259X,
2256 };
2257