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 IXGBE_ERR_SWFW_SYNC;
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 IXGBE_ERR_SFP_SETUP_NOT_COMPLETE;
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 IXGBE_ERR_SFP_SETUP_NOT_COMPLETE;
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 IXGBE_ERR_SWFW_SYNC;
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 IXGBE_ERR_SWFW_SYNC;
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 IXGBE_ERR_LINK_SETUP;
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 = IXGBE_ERR_AUTONEG_NOT_COMPLETE;
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 IXGBE_ERR_LINK_SETUP;
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 =
865 IXGBE_ERR_AUTONEG_NOT_COMPLETE;
866 hw_dbg(hw, "Autoneg did not complete.\n");
867 }
868 }
869 }
870
871 /* Add delay to filter out noises during initial link setup */
872 msleep(50);
873 }
874
875 return status;
876 }
877
878 /**
879 * ixgbe_setup_copper_link_82599 - Set the PHY autoneg advertised field
880 * @hw: pointer to hardware structure
881 * @speed: new link speed
882 * @autoneg_wait_to_complete: true if waiting is needed to complete
883 *
884 * Restarts link on PHY and MAC based on settings passed in.
885 **/
ixgbe_setup_copper_link_82599(struct ixgbe_hw * hw,ixgbe_link_speed speed,bool autoneg_wait_to_complete)886 static s32 ixgbe_setup_copper_link_82599(struct ixgbe_hw *hw,
887 ixgbe_link_speed speed,
888 bool autoneg_wait_to_complete)
889 {
890 s32 status;
891
892 /* Setup the PHY according to input speed */
893 status = hw->phy.ops.setup_link_speed(hw, speed,
894 autoneg_wait_to_complete);
895 /* Set up MAC */
896 ixgbe_start_mac_link_82599(hw, autoneg_wait_to_complete);
897
898 return status;
899 }
900
901 /**
902 * ixgbe_reset_hw_82599 - Perform hardware reset
903 * @hw: pointer to hardware structure
904 *
905 * Resets the hardware by resetting the transmit and receive units, masks
906 * and clears all interrupts, perform a PHY reset, and perform a link (MAC)
907 * reset.
908 **/
ixgbe_reset_hw_82599(struct ixgbe_hw * hw)909 static s32 ixgbe_reset_hw_82599(struct ixgbe_hw *hw)
910 {
911 ixgbe_link_speed link_speed;
912 s32 status;
913 u32 ctrl, i, autoc, autoc2;
914 u32 curr_lms;
915 bool link_up = false;
916
917 /* Call adapter stop to disable tx/rx and clear interrupts */
918 status = hw->mac.ops.stop_adapter(hw);
919 if (status)
920 return status;
921
922 /* flush pending Tx transactions */
923 ixgbe_clear_tx_pending(hw);
924
925 /* PHY ops must be identified and initialized prior to reset */
926
927 /* Identify PHY and related function pointers */
928 status = hw->phy.ops.init(hw);
929
930 if (status == IXGBE_ERR_SFP_NOT_SUPPORTED)
931 return status;
932
933 /* Setup SFP module if there is one present. */
934 if (hw->phy.sfp_setup_needed) {
935 status = hw->mac.ops.setup_sfp(hw);
936 hw->phy.sfp_setup_needed = false;
937 }
938
939 if (status == IXGBE_ERR_SFP_NOT_SUPPORTED)
940 return status;
941
942 /* Reset PHY */
943 if (hw->phy.reset_disable == false && hw->phy.ops.reset != NULL)
944 hw->phy.ops.reset(hw);
945
946 /* remember AUTOC from before we reset */
947 curr_lms = IXGBE_READ_REG(hw, IXGBE_AUTOC) & IXGBE_AUTOC_LMS_MASK;
948
949 mac_reset_top:
950 /*
951 * Issue global reset to the MAC. Needs to be SW reset if link is up.
952 * If link reset is used when link is up, it might reset the PHY when
953 * mng is using it. If link is down or the flag to force full link
954 * reset is set, then perform link reset.
955 */
956 ctrl = IXGBE_CTRL_LNK_RST;
957 if (!hw->force_full_reset) {
958 hw->mac.ops.check_link(hw, &link_speed, &link_up, false);
959 if (link_up)
960 ctrl = IXGBE_CTRL_RST;
961 }
962
963 ctrl |= IXGBE_READ_REG(hw, IXGBE_CTRL);
964 IXGBE_WRITE_REG(hw, IXGBE_CTRL, ctrl);
965 IXGBE_WRITE_FLUSH(hw);
966 usleep_range(1000, 1200);
967
968 /* Poll for reset bit to self-clear indicating reset is complete */
969 for (i = 0; i < 10; i++) {
970 ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL);
971 if (!(ctrl & IXGBE_CTRL_RST_MASK))
972 break;
973 udelay(1);
974 }
975
976 if (ctrl & IXGBE_CTRL_RST_MASK) {
977 status = IXGBE_ERR_RESET_FAILED;
978 hw_dbg(hw, "Reset polling failed to complete.\n");
979 }
980
981 msleep(50);
982
983 /*
984 * Double resets are required for recovery from certain error
985 * conditions. Between resets, it is necessary to stall to allow time
986 * for any pending HW events to complete.
987 */
988 if (hw->mac.flags & IXGBE_FLAGS_DOUBLE_RESET_REQUIRED) {
989 hw->mac.flags &= ~IXGBE_FLAGS_DOUBLE_RESET_REQUIRED;
990 goto mac_reset_top;
991 }
992
993 /*
994 * Store the original AUTOC/AUTOC2 values if they have not been
995 * stored off yet. Otherwise restore the stored original
996 * values since the reset operation sets back to defaults.
997 */
998 autoc = IXGBE_READ_REG(hw, IXGBE_AUTOC);
999 autoc2 = IXGBE_READ_REG(hw, IXGBE_AUTOC2);
1000
1001 /* Enable link if disabled in NVM */
1002 if (autoc2 & IXGBE_AUTOC2_LINK_DISABLE_MASK) {
1003 autoc2 &= ~IXGBE_AUTOC2_LINK_DISABLE_MASK;
1004 IXGBE_WRITE_REG(hw, IXGBE_AUTOC2, autoc2);
1005 IXGBE_WRITE_FLUSH(hw);
1006 }
1007
1008 if (hw->mac.orig_link_settings_stored == false) {
1009 hw->mac.orig_autoc = autoc;
1010 hw->mac.orig_autoc2 = autoc2;
1011 hw->mac.orig_link_settings_stored = true;
1012 } else {
1013
1014 /* If MNG FW is running on a multi-speed device that
1015 * doesn't autoneg with out driver support we need to
1016 * leave LMS in the state it was before we MAC reset.
1017 * Likewise if we support WoL we don't want change the
1018 * LMS state either.
1019 */
1020 if ((hw->phy.multispeed_fiber && ixgbe_mng_enabled(hw)) ||
1021 hw->wol_enabled)
1022 hw->mac.orig_autoc =
1023 (hw->mac.orig_autoc & ~IXGBE_AUTOC_LMS_MASK) |
1024 curr_lms;
1025
1026 if (autoc != hw->mac.orig_autoc) {
1027 status = hw->mac.ops.prot_autoc_write(hw,
1028 hw->mac.orig_autoc,
1029 false);
1030 if (status)
1031 return status;
1032 }
1033
1034 if ((autoc2 & IXGBE_AUTOC2_UPPER_MASK) !=
1035 (hw->mac.orig_autoc2 & IXGBE_AUTOC2_UPPER_MASK)) {
1036 autoc2 &= ~IXGBE_AUTOC2_UPPER_MASK;
1037 autoc2 |= (hw->mac.orig_autoc2 &
1038 IXGBE_AUTOC2_UPPER_MASK);
1039 IXGBE_WRITE_REG(hw, IXGBE_AUTOC2, autoc2);
1040 }
1041 }
1042
1043 /* Store the permanent mac address */
1044 hw->mac.ops.get_mac_addr(hw, hw->mac.perm_addr);
1045
1046 /*
1047 * Store MAC address from RAR0, clear receive address registers, and
1048 * clear the multicast table. Also reset num_rar_entries to 128,
1049 * since we modify this value when programming the SAN MAC address.
1050 */
1051 hw->mac.num_rar_entries = IXGBE_82599_RAR_ENTRIES;
1052 hw->mac.ops.init_rx_addrs(hw);
1053
1054 /* Store the permanent SAN mac address */
1055 hw->mac.ops.get_san_mac_addr(hw, hw->mac.san_addr);
1056
1057 /* Add the SAN MAC address to the RAR only if it's a valid address */
1058 if (is_valid_ether_addr(hw->mac.san_addr)) {
1059 /* Save the SAN MAC RAR index */
1060 hw->mac.san_mac_rar_index = hw->mac.num_rar_entries - 1;
1061
1062 hw->mac.ops.set_rar(hw, hw->mac.san_mac_rar_index,
1063 hw->mac.san_addr, 0, IXGBE_RAH_AV);
1064
1065 /* clear VMDq pool/queue selection for this RAR */
1066 hw->mac.ops.clear_vmdq(hw, hw->mac.san_mac_rar_index,
1067 IXGBE_CLEAR_VMDQ_ALL);
1068
1069 /* Reserve the last RAR for the SAN MAC address */
1070 hw->mac.num_rar_entries--;
1071 }
1072
1073 /* Store the alternative WWNN/WWPN prefix */
1074 hw->mac.ops.get_wwn_prefix(hw, &hw->mac.wwnn_prefix,
1075 &hw->mac.wwpn_prefix);
1076
1077 return status;
1078 }
1079
1080 /**
1081 * ixgbe_fdir_check_cmd_complete - poll to check whether FDIRCMD is complete
1082 * @hw: pointer to hardware structure
1083 * @fdircmd: current value of FDIRCMD register
1084 */
ixgbe_fdir_check_cmd_complete(struct ixgbe_hw * hw,u32 * fdircmd)1085 static s32 ixgbe_fdir_check_cmd_complete(struct ixgbe_hw *hw, u32 *fdircmd)
1086 {
1087 int i;
1088
1089 for (i = 0; i < IXGBE_FDIRCMD_CMD_POLL; i++) {
1090 *fdircmd = IXGBE_READ_REG(hw, IXGBE_FDIRCMD);
1091 if (!(*fdircmd & IXGBE_FDIRCMD_CMD_MASK))
1092 return 0;
1093 udelay(10);
1094 }
1095
1096 return IXGBE_ERR_FDIR_CMD_INCOMPLETE;
1097 }
1098
1099 /**
1100 * ixgbe_reinit_fdir_tables_82599 - Reinitialize Flow Director tables.
1101 * @hw: pointer to hardware structure
1102 **/
ixgbe_reinit_fdir_tables_82599(struct ixgbe_hw * hw)1103 s32 ixgbe_reinit_fdir_tables_82599(struct ixgbe_hw *hw)
1104 {
1105 int i;
1106 u32 fdirctrl = IXGBE_READ_REG(hw, IXGBE_FDIRCTRL);
1107 u32 fdircmd;
1108 s32 err;
1109
1110 fdirctrl &= ~IXGBE_FDIRCTRL_INIT_DONE;
1111
1112 /*
1113 * Before starting reinitialization process,
1114 * FDIRCMD.CMD must be zero.
1115 */
1116 err = ixgbe_fdir_check_cmd_complete(hw, &fdircmd);
1117 if (err) {
1118 hw_dbg(hw, "Flow Director previous command did not complete, aborting table re-initialization.\n");
1119 return err;
1120 }
1121
1122 IXGBE_WRITE_REG(hw, IXGBE_FDIRFREE, 0);
1123 IXGBE_WRITE_FLUSH(hw);
1124 /*
1125 * 82599 adapters flow director init flow cannot be restarted,
1126 * Workaround 82599 silicon errata by performing the following steps
1127 * before re-writing the FDIRCTRL control register with the same value.
1128 * - write 1 to bit 8 of FDIRCMD register &
1129 * - write 0 to bit 8 of FDIRCMD register
1130 */
1131 IXGBE_WRITE_REG(hw, IXGBE_FDIRCMD,
1132 (IXGBE_READ_REG(hw, IXGBE_FDIRCMD) |
1133 IXGBE_FDIRCMD_CLEARHT));
1134 IXGBE_WRITE_FLUSH(hw);
1135 IXGBE_WRITE_REG(hw, IXGBE_FDIRCMD,
1136 (IXGBE_READ_REG(hw, IXGBE_FDIRCMD) &
1137 ~IXGBE_FDIRCMD_CLEARHT));
1138 IXGBE_WRITE_FLUSH(hw);
1139 /*
1140 * Clear FDIR Hash register to clear any leftover hashes
1141 * waiting to be programmed.
1142 */
1143 IXGBE_WRITE_REG(hw, IXGBE_FDIRHASH, 0x00);
1144 IXGBE_WRITE_FLUSH(hw);
1145
1146 IXGBE_WRITE_REG(hw, IXGBE_FDIRCTRL, fdirctrl);
1147 IXGBE_WRITE_FLUSH(hw);
1148
1149 /* Poll init-done after we write FDIRCTRL register */
1150 for (i = 0; i < IXGBE_FDIR_INIT_DONE_POLL; i++) {
1151 if (IXGBE_READ_REG(hw, IXGBE_FDIRCTRL) &
1152 IXGBE_FDIRCTRL_INIT_DONE)
1153 break;
1154 usleep_range(1000, 2000);
1155 }
1156 if (i >= IXGBE_FDIR_INIT_DONE_POLL) {
1157 hw_dbg(hw, "Flow Director Signature poll time exceeded!\n");
1158 return IXGBE_ERR_FDIR_REINIT_FAILED;
1159 }
1160
1161 /* Clear FDIR statistics registers (read to clear) */
1162 IXGBE_READ_REG(hw, IXGBE_FDIRUSTAT);
1163 IXGBE_READ_REG(hw, IXGBE_FDIRFSTAT);
1164 IXGBE_READ_REG(hw, IXGBE_FDIRMATCH);
1165 IXGBE_READ_REG(hw, IXGBE_FDIRMISS);
1166 IXGBE_READ_REG(hw, IXGBE_FDIRLEN);
1167
1168 return 0;
1169 }
1170
1171 /**
1172 * ixgbe_fdir_enable_82599 - Initialize Flow Director control registers
1173 * @hw: pointer to hardware structure
1174 * @fdirctrl: value to write to flow director control register
1175 **/
ixgbe_fdir_enable_82599(struct ixgbe_hw * hw,u32 fdirctrl)1176 static void ixgbe_fdir_enable_82599(struct ixgbe_hw *hw, u32 fdirctrl)
1177 {
1178 int i;
1179
1180 /* Prime the keys for hashing */
1181 IXGBE_WRITE_REG(hw, IXGBE_FDIRHKEY, IXGBE_ATR_BUCKET_HASH_KEY);
1182 IXGBE_WRITE_REG(hw, IXGBE_FDIRSKEY, IXGBE_ATR_SIGNATURE_HASH_KEY);
1183
1184 /*
1185 * Poll init-done after we write the register. Estimated times:
1186 * 10G: PBALLOC = 11b, timing is 60us
1187 * 1G: PBALLOC = 11b, timing is 600us
1188 * 100M: PBALLOC = 11b, timing is 6ms
1189 *
1190 * Multiple these timings by 4 if under full Rx load
1191 *
1192 * So we'll poll for IXGBE_FDIR_INIT_DONE_POLL times, sleeping for
1193 * 1 msec per poll time. If we're at line rate and drop to 100M, then
1194 * this might not finish in our poll time, but we can live with that
1195 * for now.
1196 */
1197 IXGBE_WRITE_REG(hw, IXGBE_FDIRCTRL, fdirctrl);
1198 IXGBE_WRITE_FLUSH(hw);
1199 for (i = 0; i < IXGBE_FDIR_INIT_DONE_POLL; i++) {
1200 if (IXGBE_READ_REG(hw, IXGBE_FDIRCTRL) &
1201 IXGBE_FDIRCTRL_INIT_DONE)
1202 break;
1203 usleep_range(1000, 2000);
1204 }
1205
1206 if (i >= IXGBE_FDIR_INIT_DONE_POLL)
1207 hw_dbg(hw, "Flow Director poll time exceeded!\n");
1208 }
1209
1210 /**
1211 * ixgbe_init_fdir_signature_82599 - Initialize Flow Director signature filters
1212 * @hw: pointer to hardware structure
1213 * @fdirctrl: value to write to flow director control register, initially
1214 * contains just the value of the Rx packet buffer allocation
1215 **/
ixgbe_init_fdir_signature_82599(struct ixgbe_hw * hw,u32 fdirctrl)1216 s32 ixgbe_init_fdir_signature_82599(struct ixgbe_hw *hw, u32 fdirctrl)
1217 {
1218 /*
1219 * Continue setup of fdirctrl register bits:
1220 * Move the flexible bytes to use the ethertype - shift 6 words
1221 * Set the maximum length per hash bucket to 0xA filters
1222 * Send interrupt when 64 filters are left
1223 */
1224 fdirctrl |= (0x6 << IXGBE_FDIRCTRL_FLEX_SHIFT) |
1225 (0xA << IXGBE_FDIRCTRL_MAX_LENGTH_SHIFT) |
1226 (4 << IXGBE_FDIRCTRL_FULL_THRESH_SHIFT);
1227
1228 /* write hashes and fdirctrl register, poll for completion */
1229 ixgbe_fdir_enable_82599(hw, fdirctrl);
1230
1231 return 0;
1232 }
1233
1234 /**
1235 * ixgbe_init_fdir_perfect_82599 - Initialize Flow Director perfect filters
1236 * @hw: pointer to hardware structure
1237 * @fdirctrl: value to write to flow director control register, initially
1238 * contains just the value of the Rx packet buffer allocation
1239 **/
ixgbe_init_fdir_perfect_82599(struct ixgbe_hw * hw,u32 fdirctrl)1240 s32 ixgbe_init_fdir_perfect_82599(struct ixgbe_hw *hw, u32 fdirctrl)
1241 {
1242 /*
1243 * Continue setup of fdirctrl register bits:
1244 * Turn perfect match filtering on
1245 * Initialize the drop queue
1246 * Move the flexible bytes to use the ethertype - shift 6 words
1247 * Set the maximum length per hash bucket to 0xA filters
1248 * Send interrupt when 64 (0x4 * 16) filters are left
1249 */
1250 fdirctrl |= IXGBE_FDIRCTRL_PERFECT_MATCH |
1251 (IXGBE_FDIR_DROP_QUEUE << IXGBE_FDIRCTRL_DROP_Q_SHIFT) |
1252 (0x6 << IXGBE_FDIRCTRL_FLEX_SHIFT) |
1253 (0xA << IXGBE_FDIRCTRL_MAX_LENGTH_SHIFT) |
1254 (4 << IXGBE_FDIRCTRL_FULL_THRESH_SHIFT);
1255
1256 /* write hashes and fdirctrl register, poll for completion */
1257 ixgbe_fdir_enable_82599(hw, fdirctrl);
1258
1259 return 0;
1260 }
1261
1262 /*
1263 * These defines allow us to quickly generate all of the necessary instructions
1264 * in the function below by simply calling out IXGBE_COMPUTE_SIG_HASH_ITERATION
1265 * for values 0 through 15
1266 */
1267 #define IXGBE_ATR_COMMON_HASH_KEY \
1268 (IXGBE_ATR_BUCKET_HASH_KEY & IXGBE_ATR_SIGNATURE_HASH_KEY)
1269 #define IXGBE_COMPUTE_SIG_HASH_ITERATION(_n) \
1270 do { \
1271 u32 n = (_n); \
1272 if (IXGBE_ATR_COMMON_HASH_KEY & BIT(n)) \
1273 common_hash ^= lo_hash_dword >> n; \
1274 else if (IXGBE_ATR_BUCKET_HASH_KEY & BIT(n)) \
1275 bucket_hash ^= lo_hash_dword >> n; \
1276 else if (IXGBE_ATR_SIGNATURE_HASH_KEY & BIT(n)) \
1277 sig_hash ^= lo_hash_dword << (16 - n); \
1278 if (IXGBE_ATR_COMMON_HASH_KEY & BIT(n + 16)) \
1279 common_hash ^= hi_hash_dword >> n; \
1280 else if (IXGBE_ATR_BUCKET_HASH_KEY & BIT(n + 16)) \
1281 bucket_hash ^= hi_hash_dword >> n; \
1282 else if (IXGBE_ATR_SIGNATURE_HASH_KEY & BIT(n + 16)) \
1283 sig_hash ^= hi_hash_dword << (16 - n); \
1284 } while (0)
1285
1286 /**
1287 * ixgbe_atr_compute_sig_hash_82599 - Compute the signature hash
1288 * @input: input bitstream to compute the hash on
1289 * @common: compressed common input dword
1290 *
1291 * This function is almost identical to the function above but contains
1292 * several optimizations such as unwinding all of the loops, letting the
1293 * compiler work out all of the conditional ifs since the keys are static
1294 * defines, and computing two keys at once since the hashed dword stream
1295 * will be the same for both keys.
1296 **/
ixgbe_atr_compute_sig_hash_82599(union ixgbe_atr_hash_dword input,union ixgbe_atr_hash_dword common)1297 static u32 ixgbe_atr_compute_sig_hash_82599(union ixgbe_atr_hash_dword input,
1298 union ixgbe_atr_hash_dword common)
1299 {
1300 u32 hi_hash_dword, lo_hash_dword, flow_vm_vlan;
1301 u32 sig_hash = 0, bucket_hash = 0, common_hash = 0;
1302
1303 /* record the flow_vm_vlan bits as they are a key part to the hash */
1304 flow_vm_vlan = ntohl(input.dword);
1305
1306 /* generate common hash dword */
1307 hi_hash_dword = ntohl(common.dword);
1308
1309 /* low dword is word swapped version of common */
1310 lo_hash_dword = (hi_hash_dword >> 16) | (hi_hash_dword << 16);
1311
1312 /* apply flow ID/VM pool/VLAN ID bits to hash words */
1313 hi_hash_dword ^= flow_vm_vlan ^ (flow_vm_vlan >> 16);
1314
1315 /* Process bits 0 and 16 */
1316 IXGBE_COMPUTE_SIG_HASH_ITERATION(0);
1317
1318 /*
1319 * apply flow ID/VM pool/VLAN ID bits to lo hash dword, we had to
1320 * delay this because bit 0 of the stream should not be processed
1321 * so we do not add the vlan until after bit 0 was processed
1322 */
1323 lo_hash_dword ^= flow_vm_vlan ^ (flow_vm_vlan << 16);
1324
1325 /* Process remaining 30 bit of the key */
1326 IXGBE_COMPUTE_SIG_HASH_ITERATION(1);
1327 IXGBE_COMPUTE_SIG_HASH_ITERATION(2);
1328 IXGBE_COMPUTE_SIG_HASH_ITERATION(3);
1329 IXGBE_COMPUTE_SIG_HASH_ITERATION(4);
1330 IXGBE_COMPUTE_SIG_HASH_ITERATION(5);
1331 IXGBE_COMPUTE_SIG_HASH_ITERATION(6);
1332 IXGBE_COMPUTE_SIG_HASH_ITERATION(7);
1333 IXGBE_COMPUTE_SIG_HASH_ITERATION(8);
1334 IXGBE_COMPUTE_SIG_HASH_ITERATION(9);
1335 IXGBE_COMPUTE_SIG_HASH_ITERATION(10);
1336 IXGBE_COMPUTE_SIG_HASH_ITERATION(11);
1337 IXGBE_COMPUTE_SIG_HASH_ITERATION(12);
1338 IXGBE_COMPUTE_SIG_HASH_ITERATION(13);
1339 IXGBE_COMPUTE_SIG_HASH_ITERATION(14);
1340 IXGBE_COMPUTE_SIG_HASH_ITERATION(15);
1341
1342 /* combine common_hash result with signature and bucket hashes */
1343 bucket_hash ^= common_hash;
1344 bucket_hash &= IXGBE_ATR_HASH_MASK;
1345
1346 sig_hash ^= common_hash << 16;
1347 sig_hash &= IXGBE_ATR_HASH_MASK << 16;
1348
1349 /* return completed signature hash */
1350 return sig_hash ^ bucket_hash;
1351 }
1352
1353 /**
1354 * ixgbe_fdir_add_signature_filter_82599 - Adds a signature hash filter
1355 * @hw: pointer to hardware structure
1356 * @input: unique input dword
1357 * @common: compressed common input dword
1358 * @queue: queue index to direct traffic to
1359 *
1360 * Note that the tunnel bit in input must not be set when the hardware
1361 * tunneling support does not exist.
1362 **/
ixgbe_fdir_add_signature_filter_82599(struct ixgbe_hw * hw,union ixgbe_atr_hash_dword input,union ixgbe_atr_hash_dword common,u8 queue)1363 s32 ixgbe_fdir_add_signature_filter_82599(struct ixgbe_hw *hw,
1364 union ixgbe_atr_hash_dword input,
1365 union ixgbe_atr_hash_dword common,
1366 u8 queue)
1367 {
1368 u64 fdirhashcmd;
1369 u8 flow_type;
1370 bool tunnel;
1371 u32 fdircmd;
1372
1373 /*
1374 * Get the flow_type in order to program FDIRCMD properly
1375 * lowest 2 bits are FDIRCMD.L4TYPE, third lowest bit is FDIRCMD.IPV6
1376 */
1377 tunnel = !!(input.formatted.flow_type & IXGBE_ATR_L4TYPE_TUNNEL_MASK);
1378 flow_type = input.formatted.flow_type &
1379 (IXGBE_ATR_L4TYPE_TUNNEL_MASK - 1);
1380 switch (flow_type) {
1381 case IXGBE_ATR_FLOW_TYPE_TCPV4:
1382 case IXGBE_ATR_FLOW_TYPE_UDPV4:
1383 case IXGBE_ATR_FLOW_TYPE_SCTPV4:
1384 case IXGBE_ATR_FLOW_TYPE_TCPV6:
1385 case IXGBE_ATR_FLOW_TYPE_UDPV6:
1386 case IXGBE_ATR_FLOW_TYPE_SCTPV6:
1387 break;
1388 default:
1389 hw_dbg(hw, " Error on flow type input\n");
1390 return IXGBE_ERR_CONFIG;
1391 }
1392
1393 /* configure FDIRCMD register */
1394 fdircmd = IXGBE_FDIRCMD_CMD_ADD_FLOW | IXGBE_FDIRCMD_FILTER_UPDATE |
1395 IXGBE_FDIRCMD_LAST | IXGBE_FDIRCMD_QUEUE_EN;
1396 fdircmd |= (u32)flow_type << IXGBE_FDIRCMD_FLOW_TYPE_SHIFT;
1397 fdircmd |= (u32)queue << IXGBE_FDIRCMD_RX_QUEUE_SHIFT;
1398 if (tunnel)
1399 fdircmd |= IXGBE_FDIRCMD_TUNNEL_FILTER;
1400
1401 /*
1402 * The lower 32-bits of fdirhashcmd is for FDIRHASH, the upper 32-bits
1403 * is for FDIRCMD. Then do a 64-bit register write from FDIRHASH.
1404 */
1405 fdirhashcmd = (u64)fdircmd << 32;
1406 fdirhashcmd |= ixgbe_atr_compute_sig_hash_82599(input, common);
1407 IXGBE_WRITE_REG64(hw, IXGBE_FDIRHASH, fdirhashcmd);
1408
1409 hw_dbg(hw, "Tx Queue=%x hash=%x\n", queue, (u32)fdirhashcmd);
1410
1411 return 0;
1412 }
1413
1414 #define IXGBE_COMPUTE_BKT_HASH_ITERATION(_n) \
1415 do { \
1416 u32 n = (_n); \
1417 if (IXGBE_ATR_BUCKET_HASH_KEY & BIT(n)) \
1418 bucket_hash ^= lo_hash_dword >> n; \
1419 if (IXGBE_ATR_BUCKET_HASH_KEY & BIT(n + 16)) \
1420 bucket_hash ^= hi_hash_dword >> n; \
1421 } while (0)
1422
1423 /**
1424 * ixgbe_atr_compute_perfect_hash_82599 - Compute the perfect filter hash
1425 * @input: input bitstream to compute the hash on
1426 * @input_mask: mask for the input bitstream
1427 *
1428 * This function serves two main purposes. First it applies the input_mask
1429 * to the atr_input resulting in a cleaned up atr_input data stream.
1430 * Secondly it computes the hash and stores it in the bkt_hash field at
1431 * the end of the input byte stream. This way it will be available for
1432 * future use without needing to recompute the hash.
1433 **/
ixgbe_atr_compute_perfect_hash_82599(union ixgbe_atr_input * input,union ixgbe_atr_input * input_mask)1434 void ixgbe_atr_compute_perfect_hash_82599(union ixgbe_atr_input *input,
1435 union ixgbe_atr_input *input_mask)
1436 {
1437
1438 u32 hi_hash_dword, lo_hash_dword, flow_vm_vlan;
1439 u32 bucket_hash = 0;
1440 __be32 hi_dword = 0;
1441 int i;
1442
1443 /* Apply masks to input data */
1444 for (i = 0; i <= 10; i++)
1445 input->dword_stream[i] &= input_mask->dword_stream[i];
1446
1447 /* record the flow_vm_vlan bits as they are a key part to the hash */
1448 flow_vm_vlan = ntohl(input->dword_stream[0]);
1449
1450 /* generate common hash dword */
1451 for (i = 1; i <= 10; i++)
1452 hi_dword ^= input->dword_stream[i];
1453 hi_hash_dword = ntohl(hi_dword);
1454
1455 /* low dword is word swapped version of common */
1456 lo_hash_dword = (hi_hash_dword >> 16) | (hi_hash_dword << 16);
1457
1458 /* apply flow ID/VM pool/VLAN ID bits to hash words */
1459 hi_hash_dword ^= flow_vm_vlan ^ (flow_vm_vlan >> 16);
1460
1461 /* Process bits 0 and 16 */
1462 IXGBE_COMPUTE_BKT_HASH_ITERATION(0);
1463
1464 /*
1465 * apply flow ID/VM pool/VLAN ID bits to lo hash dword, we had to
1466 * delay this because bit 0 of the stream should not be processed
1467 * so we do not add the vlan until after bit 0 was processed
1468 */
1469 lo_hash_dword ^= flow_vm_vlan ^ (flow_vm_vlan << 16);
1470
1471 /* Process remaining 30 bit of the key */
1472 for (i = 1; i <= 15; i++)
1473 IXGBE_COMPUTE_BKT_HASH_ITERATION(i);
1474
1475 /*
1476 * Limit hash to 13 bits since max bucket count is 8K.
1477 * Store result at the end of the input stream.
1478 */
1479 input->formatted.bkt_hash = (__force __be16)(bucket_hash & 0x1FFF);
1480 }
1481
1482 /**
1483 * ixgbe_get_fdirtcpm_82599 - generate a tcp port from atr_input_masks
1484 * @input_mask: mask to be bit swapped
1485 *
1486 * The source and destination port masks for flow director are bit swapped
1487 * in that bit 15 effects bit 0, 14 effects 1, 13, 2 etc. In order to
1488 * generate a correctly swapped value we need to bit swap the mask and that
1489 * is what is accomplished by this function.
1490 **/
ixgbe_get_fdirtcpm_82599(union ixgbe_atr_input * input_mask)1491 static u32 ixgbe_get_fdirtcpm_82599(union ixgbe_atr_input *input_mask)
1492 {
1493 u32 mask = ntohs(input_mask->formatted.dst_port);
1494
1495 mask <<= IXGBE_FDIRTCPM_DPORTM_SHIFT;
1496 mask |= ntohs(input_mask->formatted.src_port);
1497 mask = ((mask & 0x55555555) << 1) | ((mask & 0xAAAAAAAA) >> 1);
1498 mask = ((mask & 0x33333333) << 2) | ((mask & 0xCCCCCCCC) >> 2);
1499 mask = ((mask & 0x0F0F0F0F) << 4) | ((mask & 0xF0F0F0F0) >> 4);
1500 return ((mask & 0x00FF00FF) << 8) | ((mask & 0xFF00FF00) >> 8);
1501 }
1502
1503 /*
1504 * These two macros are meant to address the fact that we have registers
1505 * that are either all or in part big-endian. As a result on big-endian
1506 * systems we will end up byte swapping the value to little-endian before
1507 * it is byte swapped again and written to the hardware in the original
1508 * big-endian format.
1509 */
1510 #define IXGBE_STORE_AS_BE32(_value) \
1511 (((u32)(_value) >> 24) | (((u32)(_value) & 0x00FF0000) >> 8) | \
1512 (((u32)(_value) & 0x0000FF00) << 8) | ((u32)(_value) << 24))
1513
1514 #define IXGBE_WRITE_REG_BE32(a, reg, value) \
1515 IXGBE_WRITE_REG((a), (reg), IXGBE_STORE_AS_BE32(ntohl(value)))
1516
1517 #define IXGBE_STORE_AS_BE16(_value) __swab16(ntohs((_value)))
1518
ixgbe_fdir_set_input_mask_82599(struct ixgbe_hw * hw,union ixgbe_atr_input * input_mask)1519 s32 ixgbe_fdir_set_input_mask_82599(struct ixgbe_hw *hw,
1520 union ixgbe_atr_input *input_mask)
1521 {
1522 /* mask IPv6 since it is currently not supported */
1523 u32 fdirm = IXGBE_FDIRM_DIPv6;
1524 u32 fdirtcpm;
1525
1526 /*
1527 * Program the relevant mask registers. If src/dst_port or src/dst_addr
1528 * are zero, then assume a full mask for that field. Also assume that
1529 * a VLAN of 0 is unspecified, so mask that out as well. L4type
1530 * cannot be masked out in this implementation.
1531 *
1532 * This also assumes IPv4 only. IPv6 masking isn't supported at this
1533 * point in time.
1534 */
1535
1536 /* verify bucket hash is cleared on hash generation */
1537 if (input_mask->formatted.bkt_hash)
1538 hw_dbg(hw, " bucket hash should always be 0 in mask\n");
1539
1540 /* Program FDIRM and verify partial masks */
1541 switch (input_mask->formatted.vm_pool & 0x7F) {
1542 case 0x0:
1543 fdirm |= IXGBE_FDIRM_POOL;
1544 break;
1545 case 0x7F:
1546 break;
1547 default:
1548 hw_dbg(hw, " Error on vm pool mask\n");
1549 return IXGBE_ERR_CONFIG;
1550 }
1551
1552 switch (input_mask->formatted.flow_type & IXGBE_ATR_L4TYPE_MASK) {
1553 case 0x0:
1554 fdirm |= IXGBE_FDIRM_L4P;
1555 if (input_mask->formatted.dst_port ||
1556 input_mask->formatted.src_port) {
1557 hw_dbg(hw, " Error on src/dst port mask\n");
1558 return IXGBE_ERR_CONFIG;
1559 }
1560 break;
1561 case IXGBE_ATR_L4TYPE_MASK:
1562 break;
1563 default:
1564 hw_dbg(hw, " Error on flow type mask\n");
1565 return IXGBE_ERR_CONFIG;
1566 }
1567
1568 switch (ntohs(input_mask->formatted.vlan_id) & 0xEFFF) {
1569 case 0x0000:
1570 /* mask VLAN ID */
1571 fdirm |= IXGBE_FDIRM_VLANID;
1572 fallthrough;
1573 case 0x0FFF:
1574 /* mask VLAN priority */
1575 fdirm |= IXGBE_FDIRM_VLANP;
1576 break;
1577 case 0xE000:
1578 /* mask VLAN ID only */
1579 fdirm |= IXGBE_FDIRM_VLANID;
1580 fallthrough;
1581 case 0xEFFF:
1582 /* no VLAN fields masked */
1583 break;
1584 default:
1585 hw_dbg(hw, " Error on VLAN mask\n");
1586 return IXGBE_ERR_CONFIG;
1587 }
1588
1589 switch ((__force u16)input_mask->formatted.flex_bytes & 0xFFFF) {
1590 case 0x0000:
1591 /* Mask Flex Bytes */
1592 fdirm |= IXGBE_FDIRM_FLEX;
1593 fallthrough;
1594 case 0xFFFF:
1595 break;
1596 default:
1597 hw_dbg(hw, " Error on flexible byte mask\n");
1598 return IXGBE_ERR_CONFIG;
1599 }
1600
1601 /* Now mask VM pool and destination IPv6 - bits 5 and 2 */
1602 IXGBE_WRITE_REG(hw, IXGBE_FDIRM, fdirm);
1603
1604 /* store the TCP/UDP port masks, bit reversed from port layout */
1605 fdirtcpm = ixgbe_get_fdirtcpm_82599(input_mask);
1606
1607 /* write both the same so that UDP and TCP use the same mask */
1608 IXGBE_WRITE_REG(hw, IXGBE_FDIRTCPM, ~fdirtcpm);
1609 IXGBE_WRITE_REG(hw, IXGBE_FDIRUDPM, ~fdirtcpm);
1610
1611 /* also use it for SCTP */
1612 switch (hw->mac.type) {
1613 case ixgbe_mac_X550:
1614 case ixgbe_mac_X550EM_x:
1615 case ixgbe_mac_x550em_a:
1616 IXGBE_WRITE_REG(hw, IXGBE_FDIRSCTPM, ~fdirtcpm);
1617 break;
1618 default:
1619 break;
1620 }
1621
1622 /* store source and destination IP masks (big-enian) */
1623 IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRSIP4M,
1624 ~input_mask->formatted.src_ip[0]);
1625 IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRDIP4M,
1626 ~input_mask->formatted.dst_ip[0]);
1627
1628 return 0;
1629 }
1630
ixgbe_fdir_write_perfect_filter_82599(struct ixgbe_hw * hw,union ixgbe_atr_input * input,u16 soft_id,u8 queue)1631 s32 ixgbe_fdir_write_perfect_filter_82599(struct ixgbe_hw *hw,
1632 union ixgbe_atr_input *input,
1633 u16 soft_id, u8 queue)
1634 {
1635 u32 fdirport, fdirvlan, fdirhash, fdircmd;
1636 s32 err;
1637
1638 /* currently IPv6 is not supported, must be programmed with 0 */
1639 IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRSIPv6(0),
1640 input->formatted.src_ip[0]);
1641 IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRSIPv6(1),
1642 input->formatted.src_ip[1]);
1643 IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRSIPv6(2),
1644 input->formatted.src_ip[2]);
1645
1646 /* record the source address (big-endian) */
1647 IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRIPSA, input->formatted.src_ip[0]);
1648
1649 /* record the first 32 bits of the destination address (big-endian) */
1650 IXGBE_WRITE_REG_BE32(hw, IXGBE_FDIRIPDA, input->formatted.dst_ip[0]);
1651
1652 /* record source and destination port (little-endian)*/
1653 fdirport = be16_to_cpu(input->formatted.dst_port);
1654 fdirport <<= IXGBE_FDIRPORT_DESTINATION_SHIFT;
1655 fdirport |= be16_to_cpu(input->formatted.src_port);
1656 IXGBE_WRITE_REG(hw, IXGBE_FDIRPORT, fdirport);
1657
1658 /* record vlan (little-endian) and flex_bytes(big-endian) */
1659 fdirvlan = IXGBE_STORE_AS_BE16(input->formatted.flex_bytes);
1660 fdirvlan <<= IXGBE_FDIRVLAN_FLEX_SHIFT;
1661 fdirvlan |= ntohs(input->formatted.vlan_id);
1662 IXGBE_WRITE_REG(hw, IXGBE_FDIRVLAN, fdirvlan);
1663
1664 /* configure FDIRHASH register */
1665 fdirhash = (__force u32)input->formatted.bkt_hash;
1666 fdirhash |= soft_id << IXGBE_FDIRHASH_SIG_SW_INDEX_SHIFT;
1667 IXGBE_WRITE_REG(hw, IXGBE_FDIRHASH, fdirhash);
1668
1669 /*
1670 * flush all previous writes to make certain registers are
1671 * programmed prior to issuing the command
1672 */
1673 IXGBE_WRITE_FLUSH(hw);
1674
1675 /* configure FDIRCMD register */
1676 fdircmd = IXGBE_FDIRCMD_CMD_ADD_FLOW | IXGBE_FDIRCMD_FILTER_UPDATE |
1677 IXGBE_FDIRCMD_LAST | IXGBE_FDIRCMD_QUEUE_EN;
1678 if (queue == IXGBE_FDIR_DROP_QUEUE)
1679 fdircmd |= IXGBE_FDIRCMD_DROP;
1680 fdircmd |= input->formatted.flow_type << IXGBE_FDIRCMD_FLOW_TYPE_SHIFT;
1681 fdircmd |= (u32)queue << IXGBE_FDIRCMD_RX_QUEUE_SHIFT;
1682 fdircmd |= (u32)input->formatted.vm_pool << IXGBE_FDIRCMD_VT_POOL_SHIFT;
1683
1684 IXGBE_WRITE_REG(hw, IXGBE_FDIRCMD, fdircmd);
1685 err = ixgbe_fdir_check_cmd_complete(hw, &fdircmd);
1686 if (err) {
1687 hw_dbg(hw, "Flow Director command did not complete!\n");
1688 return err;
1689 }
1690
1691 return 0;
1692 }
1693
ixgbe_fdir_erase_perfect_filter_82599(struct ixgbe_hw * hw,union ixgbe_atr_input * input,u16 soft_id)1694 s32 ixgbe_fdir_erase_perfect_filter_82599(struct ixgbe_hw *hw,
1695 union ixgbe_atr_input *input,
1696 u16 soft_id)
1697 {
1698 u32 fdirhash;
1699 u32 fdircmd;
1700 s32 err;
1701
1702 /* configure FDIRHASH register */
1703 fdirhash = (__force u32)input->formatted.bkt_hash;
1704 fdirhash |= soft_id << IXGBE_FDIRHASH_SIG_SW_INDEX_SHIFT;
1705 IXGBE_WRITE_REG(hw, IXGBE_FDIRHASH, fdirhash);
1706
1707 /* flush hash to HW */
1708 IXGBE_WRITE_FLUSH(hw);
1709
1710 /* Query if filter is present */
1711 IXGBE_WRITE_REG(hw, IXGBE_FDIRCMD, IXGBE_FDIRCMD_CMD_QUERY_REM_FILT);
1712
1713 err = ixgbe_fdir_check_cmd_complete(hw, &fdircmd);
1714 if (err) {
1715 hw_dbg(hw, "Flow Director command did not complete!\n");
1716 return err;
1717 }
1718
1719 /* if filter exists in hardware then remove it */
1720 if (fdircmd & IXGBE_FDIRCMD_FILTER_VALID) {
1721 IXGBE_WRITE_REG(hw, IXGBE_FDIRHASH, fdirhash);
1722 IXGBE_WRITE_FLUSH(hw);
1723 IXGBE_WRITE_REG(hw, IXGBE_FDIRCMD,
1724 IXGBE_FDIRCMD_CMD_REMOVE_FLOW);
1725 }
1726
1727 return 0;
1728 }
1729
1730 /**
1731 * ixgbe_read_analog_reg8_82599 - Reads 8 bit Omer analog register
1732 * @hw: pointer to hardware structure
1733 * @reg: analog register to read
1734 * @val: read value
1735 *
1736 * Performs read operation to Omer analog register specified.
1737 **/
ixgbe_read_analog_reg8_82599(struct ixgbe_hw * hw,u32 reg,u8 * val)1738 static s32 ixgbe_read_analog_reg8_82599(struct ixgbe_hw *hw, u32 reg, u8 *val)
1739 {
1740 u32 core_ctl;
1741
1742 IXGBE_WRITE_REG(hw, IXGBE_CORECTL, IXGBE_CORECTL_WRITE_CMD |
1743 (reg << 8));
1744 IXGBE_WRITE_FLUSH(hw);
1745 udelay(10);
1746 core_ctl = IXGBE_READ_REG(hw, IXGBE_CORECTL);
1747 *val = (u8)core_ctl;
1748
1749 return 0;
1750 }
1751
1752 /**
1753 * ixgbe_write_analog_reg8_82599 - Writes 8 bit Omer analog register
1754 * @hw: pointer to hardware structure
1755 * @reg: atlas register to write
1756 * @val: value to write
1757 *
1758 * Performs write operation to Omer analog register specified.
1759 **/
ixgbe_write_analog_reg8_82599(struct ixgbe_hw * hw,u32 reg,u8 val)1760 static s32 ixgbe_write_analog_reg8_82599(struct ixgbe_hw *hw, u32 reg, u8 val)
1761 {
1762 u32 core_ctl;
1763
1764 core_ctl = (reg << 8) | val;
1765 IXGBE_WRITE_REG(hw, IXGBE_CORECTL, core_ctl);
1766 IXGBE_WRITE_FLUSH(hw);
1767 udelay(10);
1768
1769 return 0;
1770 }
1771
1772 /**
1773 * ixgbe_start_hw_82599 - Prepare hardware for Tx/Rx
1774 * @hw: pointer to hardware structure
1775 *
1776 * Starts the hardware using the generic start_hw function
1777 * and the generation start_hw function.
1778 * Then performs revision-specific operations, if any.
1779 **/
ixgbe_start_hw_82599(struct ixgbe_hw * hw)1780 static s32 ixgbe_start_hw_82599(struct ixgbe_hw *hw)
1781 {
1782 s32 ret_val = 0;
1783
1784 ret_val = ixgbe_start_hw_generic(hw);
1785 if (ret_val)
1786 return ret_val;
1787
1788 ret_val = ixgbe_start_hw_gen2(hw);
1789 if (ret_val)
1790 return ret_val;
1791
1792 /* We need to run link autotry after the driver loads */
1793 hw->mac.autotry_restart = true;
1794
1795 return ixgbe_verify_fw_version_82599(hw);
1796 }
1797
1798 /**
1799 * ixgbe_identify_phy_82599 - Get physical layer module
1800 * @hw: pointer to hardware structure
1801 *
1802 * Determines the physical layer module found on the current adapter.
1803 * If PHY already detected, maintains current PHY type in hw struct,
1804 * otherwise executes the PHY detection routine.
1805 **/
ixgbe_identify_phy_82599(struct ixgbe_hw * hw)1806 static s32 ixgbe_identify_phy_82599(struct ixgbe_hw *hw)
1807 {
1808 s32 status;
1809
1810 /* Detect PHY if not unknown - returns success if already detected. */
1811 status = ixgbe_identify_phy_generic(hw);
1812 if (status) {
1813 /* 82599 10GBASE-T requires an external PHY */
1814 if (hw->mac.ops.get_media_type(hw) == ixgbe_media_type_copper)
1815 return status;
1816 status = ixgbe_identify_module_generic(hw);
1817 }
1818
1819 /* Set PHY type none if no PHY detected */
1820 if (hw->phy.type == ixgbe_phy_unknown) {
1821 hw->phy.type = ixgbe_phy_none;
1822 status = 0;
1823 }
1824
1825 /* Return error if SFP module has been detected but is not supported */
1826 if (hw->phy.type == ixgbe_phy_sfp_unsupported)
1827 return IXGBE_ERR_SFP_NOT_SUPPORTED;
1828
1829 return status;
1830 }
1831
1832 /**
1833 * ixgbe_enable_rx_dma_82599 - Enable the Rx DMA unit on 82599
1834 * @hw: pointer to hardware structure
1835 * @regval: register value to write to RXCTRL
1836 *
1837 * Enables the Rx DMA unit for 82599
1838 **/
ixgbe_enable_rx_dma_82599(struct ixgbe_hw * hw,u32 regval)1839 static s32 ixgbe_enable_rx_dma_82599(struct ixgbe_hw *hw, u32 regval)
1840 {
1841 /*
1842 * Workaround for 82599 silicon errata when enabling the Rx datapath.
1843 * If traffic is incoming before we enable the Rx unit, it could hang
1844 * the Rx DMA unit. Therefore, make sure the security engine is
1845 * completely disabled prior to enabling the Rx unit.
1846 */
1847 hw->mac.ops.disable_rx_buff(hw);
1848
1849 if (regval & IXGBE_RXCTRL_RXEN)
1850 hw->mac.ops.enable_rx(hw);
1851 else
1852 hw->mac.ops.disable_rx(hw);
1853
1854 hw->mac.ops.enable_rx_buff(hw);
1855
1856 return 0;
1857 }
1858
1859 /**
1860 * ixgbe_verify_fw_version_82599 - verify fw version for 82599
1861 * @hw: pointer to hardware structure
1862 *
1863 * Verifies that installed the firmware version is 0.6 or higher
1864 * for SFI devices. All 82599 SFI devices should have version 0.6 or higher.
1865 *
1866 * Returns IXGBE_ERR_EEPROM_VERSION if the FW is not present or
1867 * if the FW version is not supported.
1868 **/
ixgbe_verify_fw_version_82599(struct ixgbe_hw * hw)1869 static s32 ixgbe_verify_fw_version_82599(struct ixgbe_hw *hw)
1870 {
1871 s32 status = IXGBE_ERR_EEPROM_VERSION;
1872 u16 fw_offset, fw_ptp_cfg_offset;
1873 u16 offset;
1874 u16 fw_version = 0;
1875
1876 /* firmware check is only necessary for SFI devices */
1877 if (hw->phy.media_type != ixgbe_media_type_fiber)
1878 return 0;
1879
1880 /* get the offset to the Firmware Module block */
1881 offset = IXGBE_FW_PTR;
1882 if (hw->eeprom.ops.read(hw, offset, &fw_offset))
1883 goto fw_version_err;
1884
1885 if (fw_offset == 0 || fw_offset == 0xFFFF)
1886 return IXGBE_ERR_EEPROM_VERSION;
1887
1888 /* get the offset to the Pass Through Patch Configuration block */
1889 offset = fw_offset + IXGBE_FW_PASSTHROUGH_PATCH_CONFIG_PTR;
1890 if (hw->eeprom.ops.read(hw, offset, &fw_ptp_cfg_offset))
1891 goto fw_version_err;
1892
1893 if (fw_ptp_cfg_offset == 0 || fw_ptp_cfg_offset == 0xFFFF)
1894 return IXGBE_ERR_EEPROM_VERSION;
1895
1896 /* get the firmware version */
1897 offset = fw_ptp_cfg_offset + IXGBE_FW_PATCH_VERSION_4;
1898 if (hw->eeprom.ops.read(hw, offset, &fw_version))
1899 goto fw_version_err;
1900
1901 if (fw_version > 0x5)
1902 status = 0;
1903
1904 return status;
1905
1906 fw_version_err:
1907 hw_err(hw, "eeprom read at offset %d failed\n", offset);
1908 return IXGBE_ERR_EEPROM_VERSION;
1909 }
1910
1911 /**
1912 * ixgbe_verify_lesm_fw_enabled_82599 - Checks LESM FW module state.
1913 * @hw: pointer to hardware structure
1914 *
1915 * Returns true if the LESM FW module is present and enabled. Otherwise
1916 * returns false. Smart Speed must be disabled if LESM FW module is enabled.
1917 **/
ixgbe_verify_lesm_fw_enabled_82599(struct ixgbe_hw * hw)1918 static bool ixgbe_verify_lesm_fw_enabled_82599(struct ixgbe_hw *hw)
1919 {
1920 u16 fw_offset, fw_lesm_param_offset, fw_lesm_state;
1921 s32 status;
1922
1923 /* get the offset to the Firmware Module block */
1924 status = hw->eeprom.ops.read(hw, IXGBE_FW_PTR, &fw_offset);
1925
1926 if (status || fw_offset == 0 || fw_offset == 0xFFFF)
1927 return false;
1928
1929 /* get the offset to the LESM Parameters block */
1930 status = hw->eeprom.ops.read(hw, (fw_offset +
1931 IXGBE_FW_LESM_PARAMETERS_PTR),
1932 &fw_lesm_param_offset);
1933
1934 if (status ||
1935 fw_lesm_param_offset == 0 || fw_lesm_param_offset == 0xFFFF)
1936 return false;
1937
1938 /* get the lesm state word */
1939 status = hw->eeprom.ops.read(hw, (fw_lesm_param_offset +
1940 IXGBE_FW_LESM_STATE_1),
1941 &fw_lesm_state);
1942
1943 if (!status && (fw_lesm_state & IXGBE_FW_LESM_STATE_ENABLED))
1944 return true;
1945
1946 return false;
1947 }
1948
1949 /**
1950 * ixgbe_read_eeprom_buffer_82599 - Read EEPROM word(s) using
1951 * fastest available method
1952 *
1953 * @hw: pointer to hardware structure
1954 * @offset: offset of word in EEPROM to read
1955 * @words: number of words
1956 * @data: word(s) read from the EEPROM
1957 *
1958 * Retrieves 16 bit word(s) read from EEPROM
1959 **/
ixgbe_read_eeprom_buffer_82599(struct ixgbe_hw * hw,u16 offset,u16 words,u16 * data)1960 static s32 ixgbe_read_eeprom_buffer_82599(struct ixgbe_hw *hw, u16 offset,
1961 u16 words, u16 *data)
1962 {
1963 struct ixgbe_eeprom_info *eeprom = &hw->eeprom;
1964
1965 /* If EEPROM is detected and can be addressed using 14 bits,
1966 * use EERD otherwise use bit bang
1967 */
1968 if (eeprom->type == ixgbe_eeprom_spi &&
1969 offset + (words - 1) <= IXGBE_EERD_MAX_ADDR)
1970 return ixgbe_read_eerd_buffer_generic(hw, offset, words, data);
1971
1972 return ixgbe_read_eeprom_buffer_bit_bang_generic(hw, offset, words,
1973 data);
1974 }
1975
1976 /**
1977 * ixgbe_read_eeprom_82599 - Read EEPROM word using
1978 * fastest available method
1979 *
1980 * @hw: pointer to hardware structure
1981 * @offset: offset of word in the EEPROM to read
1982 * @data: word read from the EEPROM
1983 *
1984 * Reads a 16 bit word from the EEPROM
1985 **/
ixgbe_read_eeprom_82599(struct ixgbe_hw * hw,u16 offset,u16 * data)1986 static s32 ixgbe_read_eeprom_82599(struct ixgbe_hw *hw,
1987 u16 offset, u16 *data)
1988 {
1989 struct ixgbe_eeprom_info *eeprom = &hw->eeprom;
1990
1991 /*
1992 * If EEPROM is detected and can be addressed using 14 bits,
1993 * use EERD otherwise use bit bang
1994 */
1995 if (eeprom->type == ixgbe_eeprom_spi && offset <= IXGBE_EERD_MAX_ADDR)
1996 return ixgbe_read_eerd_generic(hw, offset, data);
1997
1998 return ixgbe_read_eeprom_bit_bang_generic(hw, offset, data);
1999 }
2000
2001 /**
2002 * ixgbe_reset_pipeline_82599 - perform pipeline reset
2003 *
2004 * @hw: pointer to hardware structure
2005 *
2006 * Reset pipeline by asserting Restart_AN together with LMS change to ensure
2007 * full pipeline reset. Note - We must hold the SW/FW semaphore before writing
2008 * to AUTOC, so this function assumes the semaphore is held.
2009 **/
ixgbe_reset_pipeline_82599(struct ixgbe_hw * hw)2010 static s32 ixgbe_reset_pipeline_82599(struct ixgbe_hw *hw)
2011 {
2012 s32 ret_val;
2013 u32 anlp1_reg = 0;
2014 u32 i, autoc_reg, autoc2_reg;
2015
2016 /* Enable link if disabled in NVM */
2017 autoc2_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC2);
2018 if (autoc2_reg & IXGBE_AUTOC2_LINK_DISABLE_MASK) {
2019 autoc2_reg &= ~IXGBE_AUTOC2_LINK_DISABLE_MASK;
2020 IXGBE_WRITE_REG(hw, IXGBE_AUTOC2, autoc2_reg);
2021 IXGBE_WRITE_FLUSH(hw);
2022 }
2023
2024 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
2025 autoc_reg |= IXGBE_AUTOC_AN_RESTART;
2026
2027 /* Write AUTOC register with toggled LMS[2] bit and Restart_AN */
2028 IXGBE_WRITE_REG(hw, IXGBE_AUTOC,
2029 autoc_reg ^ (0x4 << IXGBE_AUTOC_LMS_SHIFT));
2030
2031 /* Wait for AN to leave state 0 */
2032 for (i = 0; i < 10; i++) {
2033 usleep_range(4000, 8000);
2034 anlp1_reg = IXGBE_READ_REG(hw, IXGBE_ANLP1);
2035 if (anlp1_reg & IXGBE_ANLP1_AN_STATE_MASK)
2036 break;
2037 }
2038
2039 if (!(anlp1_reg & IXGBE_ANLP1_AN_STATE_MASK)) {
2040 hw_dbg(hw, "auto negotiation not completed\n");
2041 ret_val = IXGBE_ERR_RESET_FAILED;
2042 goto reset_pipeline_out;
2043 }
2044
2045 ret_val = 0;
2046
2047 reset_pipeline_out:
2048 /* Write AUTOC register with original LMS field and Restart_AN */
2049 IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc_reg);
2050 IXGBE_WRITE_FLUSH(hw);
2051
2052 return ret_val;
2053 }
2054
2055 /**
2056 * ixgbe_read_i2c_byte_82599 - Reads 8 bit word over I2C
2057 * @hw: pointer to hardware structure
2058 * @byte_offset: byte offset to read
2059 * @dev_addr: address to read from
2060 * @data: value read
2061 *
2062 * Performs byte read operation to SFP module's EEPROM over I2C interface at
2063 * a specified device address.
2064 **/
ixgbe_read_i2c_byte_82599(struct ixgbe_hw * hw,u8 byte_offset,u8 dev_addr,u8 * data)2065 static s32 ixgbe_read_i2c_byte_82599(struct ixgbe_hw *hw, u8 byte_offset,
2066 u8 dev_addr, u8 *data)
2067 {
2068 u32 esdp;
2069 s32 status;
2070 s32 timeout = 200;
2071
2072 if (hw->phy.qsfp_shared_i2c_bus == true) {
2073 /* Acquire I2C bus ownership. */
2074 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
2075 esdp |= IXGBE_ESDP_SDP0;
2076 IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp);
2077 IXGBE_WRITE_FLUSH(hw);
2078
2079 while (timeout) {
2080 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
2081 if (esdp & IXGBE_ESDP_SDP1)
2082 break;
2083
2084 usleep_range(5000, 10000);
2085 timeout--;
2086 }
2087
2088 if (!timeout) {
2089 hw_dbg(hw, "Driver can't access resource, acquiring I2C bus timeout.\n");
2090 status = IXGBE_ERR_I2C;
2091 goto release_i2c_access;
2092 }
2093 }
2094
2095 status = ixgbe_read_i2c_byte_generic(hw, byte_offset, dev_addr, data);
2096
2097 release_i2c_access:
2098 if (hw->phy.qsfp_shared_i2c_bus == true) {
2099 /* Release I2C bus ownership. */
2100 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
2101 esdp &= ~IXGBE_ESDP_SDP0;
2102 IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp);
2103 IXGBE_WRITE_FLUSH(hw);
2104 }
2105
2106 return status;
2107 }
2108
2109 /**
2110 * ixgbe_write_i2c_byte_82599 - Writes 8 bit word over I2C
2111 * @hw: pointer to hardware structure
2112 * @byte_offset: byte offset to write
2113 * @dev_addr: address to write to
2114 * @data: value to write
2115 *
2116 * Performs byte write operation to SFP module's EEPROM over I2C interface at
2117 * a specified device address.
2118 **/
ixgbe_write_i2c_byte_82599(struct ixgbe_hw * hw,u8 byte_offset,u8 dev_addr,u8 data)2119 static s32 ixgbe_write_i2c_byte_82599(struct ixgbe_hw *hw, u8 byte_offset,
2120 u8 dev_addr, u8 data)
2121 {
2122 u32 esdp;
2123 s32 status;
2124 s32 timeout = 200;
2125
2126 if (hw->phy.qsfp_shared_i2c_bus == true) {
2127 /* Acquire I2C bus ownership. */
2128 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
2129 esdp |= IXGBE_ESDP_SDP0;
2130 IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp);
2131 IXGBE_WRITE_FLUSH(hw);
2132
2133 while (timeout) {
2134 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
2135 if (esdp & IXGBE_ESDP_SDP1)
2136 break;
2137
2138 usleep_range(5000, 10000);
2139 timeout--;
2140 }
2141
2142 if (!timeout) {
2143 hw_dbg(hw, "Driver can't access resource, acquiring I2C bus timeout.\n");
2144 status = IXGBE_ERR_I2C;
2145 goto release_i2c_access;
2146 }
2147 }
2148
2149 status = ixgbe_write_i2c_byte_generic(hw, byte_offset, dev_addr, data);
2150
2151 release_i2c_access:
2152 if (hw->phy.qsfp_shared_i2c_bus == true) {
2153 /* Release I2C bus ownership. */
2154 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
2155 esdp &= ~IXGBE_ESDP_SDP0;
2156 IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp);
2157 IXGBE_WRITE_FLUSH(hw);
2158 }
2159
2160 return status;
2161 }
2162
2163 static const struct ixgbe_mac_operations mac_ops_82599 = {
2164 .init_hw = &ixgbe_init_hw_generic,
2165 .reset_hw = &ixgbe_reset_hw_82599,
2166 .start_hw = &ixgbe_start_hw_82599,
2167 .clear_hw_cntrs = &ixgbe_clear_hw_cntrs_generic,
2168 .get_media_type = &ixgbe_get_media_type_82599,
2169 .enable_rx_dma = &ixgbe_enable_rx_dma_82599,
2170 .disable_rx_buff = &ixgbe_disable_rx_buff_generic,
2171 .enable_rx_buff = &ixgbe_enable_rx_buff_generic,
2172 .get_mac_addr = &ixgbe_get_mac_addr_generic,
2173 .get_san_mac_addr = &ixgbe_get_san_mac_addr_generic,
2174 .get_device_caps = &ixgbe_get_device_caps_generic,
2175 .get_wwn_prefix = &ixgbe_get_wwn_prefix_generic,
2176 .stop_adapter = &ixgbe_stop_adapter_generic,
2177 .get_bus_info = &ixgbe_get_bus_info_generic,
2178 .set_lan_id = &ixgbe_set_lan_id_multi_port_pcie,
2179 .read_analog_reg8 = &ixgbe_read_analog_reg8_82599,
2180 .write_analog_reg8 = &ixgbe_write_analog_reg8_82599,
2181 .stop_link_on_d3 = &ixgbe_stop_mac_link_on_d3_82599,
2182 .setup_link = &ixgbe_setup_mac_link_82599,
2183 .set_rxpba = &ixgbe_set_rxpba_generic,
2184 .check_link = &ixgbe_check_mac_link_generic,
2185 .get_link_capabilities = &ixgbe_get_link_capabilities_82599,
2186 .led_on = &ixgbe_led_on_generic,
2187 .led_off = &ixgbe_led_off_generic,
2188 .init_led_link_act = ixgbe_init_led_link_act_generic,
2189 .blink_led_start = &ixgbe_blink_led_start_generic,
2190 .blink_led_stop = &ixgbe_blink_led_stop_generic,
2191 .set_rar = &ixgbe_set_rar_generic,
2192 .clear_rar = &ixgbe_clear_rar_generic,
2193 .set_vmdq = &ixgbe_set_vmdq_generic,
2194 .set_vmdq_san_mac = &ixgbe_set_vmdq_san_mac_generic,
2195 .clear_vmdq = &ixgbe_clear_vmdq_generic,
2196 .init_rx_addrs = &ixgbe_init_rx_addrs_generic,
2197 .update_mc_addr_list = &ixgbe_update_mc_addr_list_generic,
2198 .enable_mc = &ixgbe_enable_mc_generic,
2199 .disable_mc = &ixgbe_disable_mc_generic,
2200 .clear_vfta = &ixgbe_clear_vfta_generic,
2201 .set_vfta = &ixgbe_set_vfta_generic,
2202 .fc_enable = &ixgbe_fc_enable_generic,
2203 .setup_fc = ixgbe_setup_fc_generic,
2204 .fc_autoneg = ixgbe_fc_autoneg,
2205 .set_fw_drv_ver = &ixgbe_set_fw_drv_ver_generic,
2206 .init_uta_tables = &ixgbe_init_uta_tables_generic,
2207 .setup_sfp = &ixgbe_setup_sfp_modules_82599,
2208 .set_mac_anti_spoofing = &ixgbe_set_mac_anti_spoofing,
2209 .set_vlan_anti_spoofing = &ixgbe_set_vlan_anti_spoofing,
2210 .acquire_swfw_sync = &ixgbe_acquire_swfw_sync,
2211 .release_swfw_sync = &ixgbe_release_swfw_sync,
2212 .init_swfw_sync = NULL,
2213 .get_thermal_sensor_data = &ixgbe_get_thermal_sensor_data_generic,
2214 .init_thermal_sensor_thresh = &ixgbe_init_thermal_sensor_thresh_generic,
2215 .prot_autoc_read = &prot_autoc_read_82599,
2216 .prot_autoc_write = &prot_autoc_write_82599,
2217 .enable_rx = &ixgbe_enable_rx_generic,
2218 .disable_rx = &ixgbe_disable_rx_generic,
2219 };
2220
2221 static const struct ixgbe_eeprom_operations eeprom_ops_82599 = {
2222 .init_params = &ixgbe_init_eeprom_params_generic,
2223 .read = &ixgbe_read_eeprom_82599,
2224 .read_buffer = &ixgbe_read_eeprom_buffer_82599,
2225 .write = &ixgbe_write_eeprom_generic,
2226 .write_buffer = &ixgbe_write_eeprom_buffer_bit_bang_generic,
2227 .calc_checksum = &ixgbe_calc_eeprom_checksum_generic,
2228 .validate_checksum = &ixgbe_validate_eeprom_checksum_generic,
2229 .update_checksum = &ixgbe_update_eeprom_checksum_generic,
2230 };
2231
2232 static const struct ixgbe_phy_operations phy_ops_82599 = {
2233 .identify = &ixgbe_identify_phy_82599,
2234 .identify_sfp = &ixgbe_identify_module_generic,
2235 .init = &ixgbe_init_phy_ops_82599,
2236 .reset = &ixgbe_reset_phy_generic,
2237 .read_reg = &ixgbe_read_phy_reg_generic,
2238 .write_reg = &ixgbe_write_phy_reg_generic,
2239 .setup_link = &ixgbe_setup_phy_link_generic,
2240 .setup_link_speed = &ixgbe_setup_phy_link_speed_generic,
2241 .read_i2c_byte = &ixgbe_read_i2c_byte_generic,
2242 .write_i2c_byte = &ixgbe_write_i2c_byte_generic,
2243 .read_i2c_sff8472 = &ixgbe_read_i2c_sff8472_generic,
2244 .read_i2c_eeprom = &ixgbe_read_i2c_eeprom_generic,
2245 .write_i2c_eeprom = &ixgbe_write_i2c_eeprom_generic,
2246 .check_overtemp = &ixgbe_tn_check_overtemp,
2247 };
2248
2249 const struct ixgbe_info ixgbe_82599_info = {
2250 .mac = ixgbe_mac_82599EB,
2251 .get_invariants = &ixgbe_get_invariants_82599,
2252 .mac_ops = &mac_ops_82599,
2253 .eeprom_ops = &eeprom_ops_82599,
2254 .phy_ops = &phy_ops_82599,
2255 .mbx_ops = &mbx_ops_generic,
2256 .mvals = ixgbe_mvals_8259X,
2257 };
2258