1 /*******************************************************************************
3 Intel 10 Gigabit PCI Express Linux driver
4 Copyright(c) 1999 - 2016 Intel Corporation.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
23 Linux NICS <linux.nics@intel.com>
24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *******************************************************************************/
29 #include <linux/pci.h>
30 #include <linux/delay.h>
31 #include <linux/sched.h>
32 #include <linux/netdevice.h>
35 #include "ixgbe_common.h"
36 #include "ixgbe_phy.h"
38 static s32 ixgbe_acquire_eeprom(struct ixgbe_hw *hw);
39 static s32 ixgbe_get_eeprom_semaphore(struct ixgbe_hw *hw);
40 static void ixgbe_release_eeprom_semaphore(struct ixgbe_hw *hw);
41 static s32 ixgbe_ready_eeprom(struct ixgbe_hw *hw);
42 static void ixgbe_standby_eeprom(struct ixgbe_hw *hw);
43 static void ixgbe_shift_out_eeprom_bits(struct ixgbe_hw *hw, u16 data,
45 static u16 ixgbe_shift_in_eeprom_bits(struct ixgbe_hw *hw, u16 count);
46 static void ixgbe_raise_eeprom_clk(struct ixgbe_hw *hw, u32 *eec);
47 static void ixgbe_lower_eeprom_clk(struct ixgbe_hw *hw, u32 *eec);
48 static void ixgbe_release_eeprom(struct ixgbe_hw *hw);
50 static s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr);
51 static s32 ixgbe_poll_eerd_eewr_done(struct ixgbe_hw *hw, u32 ee_reg);
52 static s32 ixgbe_read_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset,
53 u16 words, u16 *data);
54 static s32 ixgbe_write_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset,
55 u16 words, u16 *data);
56 static s32 ixgbe_detect_eeprom_page_size_generic(struct ixgbe_hw *hw,
58 static s32 ixgbe_disable_pcie_master(struct ixgbe_hw *hw);
60 /* Base table for registers values that change by MAC */
61 const u32 ixgbe_mvals_8259X[IXGBE_MVALS_IDX_LIMIT] = {
62 IXGBE_MVALS_INIT(8259X)
66 * ixgbe_device_supports_autoneg_fc - Check if phy supports autoneg flow
68 * @hw: pointer to hardware structure
70 * There are several phys that do not support autoneg flow control. This
71 * function check the device id to see if the associated phy supports
72 * autoneg flow control.
74 bool ixgbe_device_supports_autoneg_fc(struct ixgbe_hw *hw)
76 bool supported = false;
77 ixgbe_link_speed speed;
80 switch (hw->phy.media_type) {
81 case ixgbe_media_type_fiber:
82 hw->mac.ops.check_link(hw, &speed, &link_up, false);
83 /* if link is down, assume supported */
85 supported = speed == IXGBE_LINK_SPEED_1GB_FULL ?
90 case ixgbe_media_type_backplane:
93 case ixgbe_media_type_copper:
94 /* only some copper devices support flow control autoneg */
95 switch (hw->device_id) {
96 case IXGBE_DEV_ID_82599_T3_LOM:
97 case IXGBE_DEV_ID_X540T:
98 case IXGBE_DEV_ID_X540T1:
99 case IXGBE_DEV_ID_X550T:
100 case IXGBE_DEV_ID_X550T1:
101 case IXGBE_DEV_ID_X550EM_X_10G_T:
102 case IXGBE_DEV_ID_X550EM_A_10G_T:
116 * ixgbe_setup_fc_generic - Set up flow control
117 * @hw: pointer to hardware structure
119 * Called at init time to set up flow control.
121 s32 ixgbe_setup_fc_generic(struct ixgbe_hw *hw)
124 u32 reg = 0, reg_bp = 0;
129 * Validate the requested mode. Strict IEEE mode does not allow
130 * ixgbe_fc_rx_pause because it will cause us to fail at UNH.
132 if (hw->fc.strict_ieee && hw->fc.requested_mode == ixgbe_fc_rx_pause) {
133 hw_dbg(hw, "ixgbe_fc_rx_pause not valid in strict IEEE mode\n");
134 return IXGBE_ERR_INVALID_LINK_SETTINGS;
138 * 10gig parts do not have a word in the EEPROM to determine the
139 * default flow control setting, so we explicitly set it to full.
141 if (hw->fc.requested_mode == ixgbe_fc_default)
142 hw->fc.requested_mode = ixgbe_fc_full;
145 * Set up the 1G and 10G flow control advertisement registers so the
146 * HW will be able to do fc autoneg once the cable is plugged in. If
147 * we link at 10G, the 1G advertisement is harmless and vice versa.
149 switch (hw->phy.media_type) {
150 case ixgbe_media_type_backplane:
151 /* some MAC's need RMW protection on AUTOC */
152 ret_val = hw->mac.ops.prot_autoc_read(hw, &locked, ®_bp);
156 /* only backplane uses autoc so fall though */
157 case ixgbe_media_type_fiber:
158 reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANA);
161 case ixgbe_media_type_copper:
162 hw->phy.ops.read_reg(hw, MDIO_AN_ADVERTISE,
163 MDIO_MMD_AN, ®_cu);
170 * The possible values of fc.requested_mode are:
171 * 0: Flow control is completely disabled
172 * 1: Rx flow control is enabled (we can receive pause frames,
173 * but not send pause frames).
174 * 2: Tx flow control is enabled (we can send pause frames but
175 * we do not support receiving pause frames).
176 * 3: Both Rx and Tx flow control (symmetric) are enabled.
179 switch (hw->fc.requested_mode) {
181 /* Flow control completely disabled by software override. */
182 reg &= ~(IXGBE_PCS1GANA_SYM_PAUSE | IXGBE_PCS1GANA_ASM_PAUSE);
183 if (hw->phy.media_type == ixgbe_media_type_backplane)
184 reg_bp &= ~(IXGBE_AUTOC_SYM_PAUSE |
185 IXGBE_AUTOC_ASM_PAUSE);
186 else if (hw->phy.media_type == ixgbe_media_type_copper)
187 reg_cu &= ~(IXGBE_TAF_SYM_PAUSE | IXGBE_TAF_ASM_PAUSE);
189 case ixgbe_fc_tx_pause:
191 * Tx Flow control is enabled, and Rx Flow control is
192 * disabled by software override.
194 reg |= IXGBE_PCS1GANA_ASM_PAUSE;
195 reg &= ~IXGBE_PCS1GANA_SYM_PAUSE;
196 if (hw->phy.media_type == ixgbe_media_type_backplane) {
197 reg_bp |= IXGBE_AUTOC_ASM_PAUSE;
198 reg_bp &= ~IXGBE_AUTOC_SYM_PAUSE;
199 } else if (hw->phy.media_type == ixgbe_media_type_copper) {
200 reg_cu |= IXGBE_TAF_ASM_PAUSE;
201 reg_cu &= ~IXGBE_TAF_SYM_PAUSE;
204 case ixgbe_fc_rx_pause:
206 * Rx Flow control is enabled and Tx Flow control is
207 * disabled by software override. Since there really
208 * isn't a way to advertise that we are capable of RX
209 * Pause ONLY, we will advertise that we support both
210 * symmetric and asymmetric Rx PAUSE, as such we fall
211 * through to the fc_full statement. Later, we will
212 * disable the adapter's ability to send PAUSE frames.
215 /* Flow control (both Rx and Tx) is enabled by SW override. */
216 reg |= IXGBE_PCS1GANA_SYM_PAUSE | IXGBE_PCS1GANA_ASM_PAUSE;
217 if (hw->phy.media_type == ixgbe_media_type_backplane)
218 reg_bp |= IXGBE_AUTOC_SYM_PAUSE |
219 IXGBE_AUTOC_ASM_PAUSE;
220 else if (hw->phy.media_type == ixgbe_media_type_copper)
221 reg_cu |= IXGBE_TAF_SYM_PAUSE | IXGBE_TAF_ASM_PAUSE;
224 hw_dbg(hw, "Flow control param set incorrectly\n");
225 return IXGBE_ERR_CONFIG;
228 if (hw->mac.type != ixgbe_mac_X540) {
230 * Enable auto-negotiation between the MAC & PHY;
231 * the MAC will advertise clause 37 flow control.
233 IXGBE_WRITE_REG(hw, IXGBE_PCS1GANA, reg);
234 reg = IXGBE_READ_REG(hw, IXGBE_PCS1GLCTL);
236 /* Disable AN timeout */
237 if (hw->fc.strict_ieee)
238 reg &= ~IXGBE_PCS1GLCTL_AN_1G_TIMEOUT_EN;
240 IXGBE_WRITE_REG(hw, IXGBE_PCS1GLCTL, reg);
241 hw_dbg(hw, "Set up FC; PCS1GLCTL = 0x%08X\n", reg);
245 * AUTOC restart handles negotiation of 1G and 10G on backplane
246 * and copper. There is no need to set the PCS1GCTL register.
249 if (hw->phy.media_type == ixgbe_media_type_backplane) {
250 /* Need the SW/FW semaphore around AUTOC writes if 82599 and
251 * LESM is on, likewise reset_pipeline requries the lock as
252 * it also writes AUTOC.
254 ret_val = hw->mac.ops.prot_autoc_write(hw, reg_bp, locked);
258 } else if ((hw->phy.media_type == ixgbe_media_type_copper) &&
259 ixgbe_device_supports_autoneg_fc(hw)) {
260 hw->phy.ops.write_reg(hw, MDIO_AN_ADVERTISE,
261 MDIO_MMD_AN, reg_cu);
264 hw_dbg(hw, "Set up FC; IXGBE_AUTOC = 0x%08X\n", reg);
269 * ixgbe_start_hw_generic - Prepare hardware for Tx/Rx
270 * @hw: pointer to hardware structure
272 * Starts the hardware by filling the bus info structure and media type, clears
273 * all on chip counters, initializes receive address registers, multicast
274 * table, VLAN filter table, calls routine to set up link and flow control
275 * settings, and leaves transmit and receive units disabled and uninitialized
277 s32 ixgbe_start_hw_generic(struct ixgbe_hw *hw)
283 /* Set the media type */
284 hw->phy.media_type = hw->mac.ops.get_media_type(hw);
286 /* Identify the PHY */
287 hw->phy.ops.identify(hw);
289 /* Clear the VLAN filter table */
290 hw->mac.ops.clear_vfta(hw);
292 /* Clear statistics registers */
293 hw->mac.ops.clear_hw_cntrs(hw);
295 /* Set No Snoop Disable */
296 ctrl_ext = IXGBE_READ_REG(hw, IXGBE_CTRL_EXT);
297 ctrl_ext |= IXGBE_CTRL_EXT_NS_DIS;
298 IXGBE_WRITE_REG(hw, IXGBE_CTRL_EXT, ctrl_ext);
299 IXGBE_WRITE_FLUSH(hw);
301 /* Setup flow control if method for doing so */
302 if (hw->mac.ops.setup_fc) {
303 ret_val = hw->mac.ops.setup_fc(hw);
308 /* Cashe bit indicating need for crosstalk fix */
309 switch (hw->mac.type) {
310 case ixgbe_mac_82599EB:
311 case ixgbe_mac_X550EM_x:
312 case ixgbe_mac_x550em_a:
313 hw->mac.ops.get_device_caps(hw, &device_caps);
314 if (device_caps & IXGBE_DEVICE_CAPS_NO_CROSSTALK_WR)
315 hw->need_crosstalk_fix = false;
317 hw->need_crosstalk_fix = true;
320 hw->need_crosstalk_fix = false;
324 /* Clear adapter stopped flag */
325 hw->adapter_stopped = false;
331 * ixgbe_start_hw_gen2 - Init sequence for common device family
332 * @hw: pointer to hw structure
334 * Performs the init sequence common to the second generation
336 * Devices in the second generation:
340 s32 ixgbe_start_hw_gen2(struct ixgbe_hw *hw)
344 /* Clear the rate limiters */
345 for (i = 0; i < hw->mac.max_tx_queues; i++) {
346 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, i);
347 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, 0);
349 IXGBE_WRITE_FLUSH(hw);
352 /* Disable relaxed ordering */
353 for (i = 0; i < hw->mac.max_tx_queues; i++) {
356 regval = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL_82599(i));
357 regval &= ~IXGBE_DCA_TXCTRL_DESC_WRO_EN;
358 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL_82599(i), regval);
361 for (i = 0; i < hw->mac.max_rx_queues; i++) {
364 regval = IXGBE_READ_REG(hw, IXGBE_DCA_RXCTRL(i));
365 regval &= ~(IXGBE_DCA_RXCTRL_DATA_WRO_EN |
366 IXGBE_DCA_RXCTRL_HEAD_WRO_EN);
367 IXGBE_WRITE_REG(hw, IXGBE_DCA_RXCTRL(i), regval);
374 * ixgbe_init_hw_generic - Generic hardware initialization
375 * @hw: pointer to hardware structure
377 * Initialize the hardware by resetting the hardware, filling the bus info
378 * structure and media type, clears all on chip counters, initializes receive
379 * address registers, multicast table, VLAN filter table, calls routine to set
380 * up link and flow control settings, and leaves transmit and receive units
381 * disabled and uninitialized
383 s32 ixgbe_init_hw_generic(struct ixgbe_hw *hw)
387 /* Reset the hardware */
388 status = hw->mac.ops.reset_hw(hw);
392 status = hw->mac.ops.start_hw(hw);
395 /* Initialize the LED link active for LED blink support */
396 hw->mac.ops.init_led_link_act(hw);
402 * ixgbe_clear_hw_cntrs_generic - Generic clear hardware counters
403 * @hw: pointer to hardware structure
405 * Clears all hardware statistics counters by reading them from the hardware
406 * Statistics counters are clear on read.
408 s32 ixgbe_clear_hw_cntrs_generic(struct ixgbe_hw *hw)
412 IXGBE_READ_REG(hw, IXGBE_CRCERRS);
413 IXGBE_READ_REG(hw, IXGBE_ILLERRC);
414 IXGBE_READ_REG(hw, IXGBE_ERRBC);
415 IXGBE_READ_REG(hw, IXGBE_MSPDC);
416 for (i = 0; i < 8; i++)
417 IXGBE_READ_REG(hw, IXGBE_MPC(i));
419 IXGBE_READ_REG(hw, IXGBE_MLFC);
420 IXGBE_READ_REG(hw, IXGBE_MRFC);
421 IXGBE_READ_REG(hw, IXGBE_RLEC);
422 IXGBE_READ_REG(hw, IXGBE_LXONTXC);
423 IXGBE_READ_REG(hw, IXGBE_LXOFFTXC);
424 if (hw->mac.type >= ixgbe_mac_82599EB) {
425 IXGBE_READ_REG(hw, IXGBE_LXONRXCNT);
426 IXGBE_READ_REG(hw, IXGBE_LXOFFRXCNT);
428 IXGBE_READ_REG(hw, IXGBE_LXONRXC);
429 IXGBE_READ_REG(hw, IXGBE_LXOFFRXC);
432 for (i = 0; i < 8; i++) {
433 IXGBE_READ_REG(hw, IXGBE_PXONTXC(i));
434 IXGBE_READ_REG(hw, IXGBE_PXOFFTXC(i));
435 if (hw->mac.type >= ixgbe_mac_82599EB) {
436 IXGBE_READ_REG(hw, IXGBE_PXONRXCNT(i));
437 IXGBE_READ_REG(hw, IXGBE_PXOFFRXCNT(i));
439 IXGBE_READ_REG(hw, IXGBE_PXONRXC(i));
440 IXGBE_READ_REG(hw, IXGBE_PXOFFRXC(i));
443 if (hw->mac.type >= ixgbe_mac_82599EB)
444 for (i = 0; i < 8; i++)
445 IXGBE_READ_REG(hw, IXGBE_PXON2OFFCNT(i));
446 IXGBE_READ_REG(hw, IXGBE_PRC64);
447 IXGBE_READ_REG(hw, IXGBE_PRC127);
448 IXGBE_READ_REG(hw, IXGBE_PRC255);
449 IXGBE_READ_REG(hw, IXGBE_PRC511);
450 IXGBE_READ_REG(hw, IXGBE_PRC1023);
451 IXGBE_READ_REG(hw, IXGBE_PRC1522);
452 IXGBE_READ_REG(hw, IXGBE_GPRC);
453 IXGBE_READ_REG(hw, IXGBE_BPRC);
454 IXGBE_READ_REG(hw, IXGBE_MPRC);
455 IXGBE_READ_REG(hw, IXGBE_GPTC);
456 IXGBE_READ_REG(hw, IXGBE_GORCL);
457 IXGBE_READ_REG(hw, IXGBE_GORCH);
458 IXGBE_READ_REG(hw, IXGBE_GOTCL);
459 IXGBE_READ_REG(hw, IXGBE_GOTCH);
460 if (hw->mac.type == ixgbe_mac_82598EB)
461 for (i = 0; i < 8; i++)
462 IXGBE_READ_REG(hw, IXGBE_RNBC(i));
463 IXGBE_READ_REG(hw, IXGBE_RUC);
464 IXGBE_READ_REG(hw, IXGBE_RFC);
465 IXGBE_READ_REG(hw, IXGBE_ROC);
466 IXGBE_READ_REG(hw, IXGBE_RJC);
467 IXGBE_READ_REG(hw, IXGBE_MNGPRC);
468 IXGBE_READ_REG(hw, IXGBE_MNGPDC);
469 IXGBE_READ_REG(hw, IXGBE_MNGPTC);
470 IXGBE_READ_REG(hw, IXGBE_TORL);
471 IXGBE_READ_REG(hw, IXGBE_TORH);
472 IXGBE_READ_REG(hw, IXGBE_TPR);
473 IXGBE_READ_REG(hw, IXGBE_TPT);
474 IXGBE_READ_REG(hw, IXGBE_PTC64);
475 IXGBE_READ_REG(hw, IXGBE_PTC127);
476 IXGBE_READ_REG(hw, IXGBE_PTC255);
477 IXGBE_READ_REG(hw, IXGBE_PTC511);
478 IXGBE_READ_REG(hw, IXGBE_PTC1023);
479 IXGBE_READ_REG(hw, IXGBE_PTC1522);
480 IXGBE_READ_REG(hw, IXGBE_MPTC);
481 IXGBE_READ_REG(hw, IXGBE_BPTC);
482 for (i = 0; i < 16; i++) {
483 IXGBE_READ_REG(hw, IXGBE_QPRC(i));
484 IXGBE_READ_REG(hw, IXGBE_QPTC(i));
485 if (hw->mac.type >= ixgbe_mac_82599EB) {
486 IXGBE_READ_REG(hw, IXGBE_QBRC_L(i));
487 IXGBE_READ_REG(hw, IXGBE_QBRC_H(i));
488 IXGBE_READ_REG(hw, IXGBE_QBTC_L(i));
489 IXGBE_READ_REG(hw, IXGBE_QBTC_H(i));
490 IXGBE_READ_REG(hw, IXGBE_QPRDC(i));
492 IXGBE_READ_REG(hw, IXGBE_QBRC(i));
493 IXGBE_READ_REG(hw, IXGBE_QBTC(i));
497 if (hw->mac.type == ixgbe_mac_X550 || hw->mac.type == ixgbe_mac_X540) {
499 hw->phy.ops.identify(hw);
500 hw->phy.ops.read_reg(hw, IXGBE_PCRC8ECL, MDIO_MMD_PCS, &i);
501 hw->phy.ops.read_reg(hw, IXGBE_PCRC8ECH, MDIO_MMD_PCS, &i);
502 hw->phy.ops.read_reg(hw, IXGBE_LDPCECL, MDIO_MMD_PCS, &i);
503 hw->phy.ops.read_reg(hw, IXGBE_LDPCECH, MDIO_MMD_PCS, &i);
510 * ixgbe_read_pba_string_generic - Reads part number string from EEPROM
511 * @hw: pointer to hardware structure
512 * @pba_num: stores the part number string from the EEPROM
513 * @pba_num_size: part number string buffer length
515 * Reads the part number string from the EEPROM.
517 s32 ixgbe_read_pba_string_generic(struct ixgbe_hw *hw, u8 *pba_num,
526 if (pba_num == NULL) {
527 hw_dbg(hw, "PBA string buffer was null\n");
528 return IXGBE_ERR_INVALID_ARGUMENT;
531 ret_val = hw->eeprom.ops.read(hw, IXGBE_PBANUM0_PTR, &data);
533 hw_dbg(hw, "NVM Read Error\n");
537 ret_val = hw->eeprom.ops.read(hw, IXGBE_PBANUM1_PTR, &pba_ptr);
539 hw_dbg(hw, "NVM Read Error\n");
544 * if data is not ptr guard the PBA must be in legacy format which
545 * means pba_ptr is actually our second data word for the PBA number
546 * and we can decode it into an ascii string
548 if (data != IXGBE_PBANUM_PTR_GUARD) {
549 hw_dbg(hw, "NVM PBA number is not stored as string\n");
551 /* we will need 11 characters to store the PBA */
552 if (pba_num_size < 11) {
553 hw_dbg(hw, "PBA string buffer too small\n");
554 return IXGBE_ERR_NO_SPACE;
557 /* extract hex string from data and pba_ptr */
558 pba_num[0] = (data >> 12) & 0xF;
559 pba_num[1] = (data >> 8) & 0xF;
560 pba_num[2] = (data >> 4) & 0xF;
561 pba_num[3] = data & 0xF;
562 pba_num[4] = (pba_ptr >> 12) & 0xF;
563 pba_num[5] = (pba_ptr >> 8) & 0xF;
566 pba_num[8] = (pba_ptr >> 4) & 0xF;
567 pba_num[9] = pba_ptr & 0xF;
569 /* put a null character on the end of our string */
572 /* switch all the data but the '-' to hex char */
573 for (offset = 0; offset < 10; offset++) {
574 if (pba_num[offset] < 0xA)
575 pba_num[offset] += '0';
576 else if (pba_num[offset] < 0x10)
577 pba_num[offset] += 'A' - 0xA;
583 ret_val = hw->eeprom.ops.read(hw, pba_ptr, &length);
585 hw_dbg(hw, "NVM Read Error\n");
589 if (length == 0xFFFF || length == 0) {
590 hw_dbg(hw, "NVM PBA number section invalid length\n");
591 return IXGBE_ERR_PBA_SECTION;
594 /* check if pba_num buffer is big enough */
595 if (pba_num_size < (((u32)length * 2) - 1)) {
596 hw_dbg(hw, "PBA string buffer too small\n");
597 return IXGBE_ERR_NO_SPACE;
600 /* trim pba length from start of string */
604 for (offset = 0; offset < length; offset++) {
605 ret_val = hw->eeprom.ops.read(hw, pba_ptr + offset, &data);
607 hw_dbg(hw, "NVM Read Error\n");
610 pba_num[offset * 2] = (u8)(data >> 8);
611 pba_num[(offset * 2) + 1] = (u8)(data & 0xFF);
613 pba_num[offset * 2] = '\0';
619 * ixgbe_get_mac_addr_generic - Generic get MAC address
620 * @hw: pointer to hardware structure
621 * @mac_addr: Adapter MAC address
623 * Reads the adapter's MAC address from first Receive Address Register (RAR0)
624 * A reset of the adapter must be performed prior to calling this function
625 * in order for the MAC address to have been loaded from the EEPROM into RAR0
627 s32 ixgbe_get_mac_addr_generic(struct ixgbe_hw *hw, u8 *mac_addr)
633 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(0));
634 rar_low = IXGBE_READ_REG(hw, IXGBE_RAL(0));
636 for (i = 0; i < 4; i++)
637 mac_addr[i] = (u8)(rar_low >> (i*8));
639 for (i = 0; i < 2; i++)
640 mac_addr[i+4] = (u8)(rar_high >> (i*8));
645 enum ixgbe_bus_width ixgbe_convert_bus_width(u16 link_status)
647 switch (link_status & IXGBE_PCI_LINK_WIDTH) {
648 case IXGBE_PCI_LINK_WIDTH_1:
649 return ixgbe_bus_width_pcie_x1;
650 case IXGBE_PCI_LINK_WIDTH_2:
651 return ixgbe_bus_width_pcie_x2;
652 case IXGBE_PCI_LINK_WIDTH_4:
653 return ixgbe_bus_width_pcie_x4;
654 case IXGBE_PCI_LINK_WIDTH_8:
655 return ixgbe_bus_width_pcie_x8;
657 return ixgbe_bus_width_unknown;
661 enum ixgbe_bus_speed ixgbe_convert_bus_speed(u16 link_status)
663 switch (link_status & IXGBE_PCI_LINK_SPEED) {
664 case IXGBE_PCI_LINK_SPEED_2500:
665 return ixgbe_bus_speed_2500;
666 case IXGBE_PCI_LINK_SPEED_5000:
667 return ixgbe_bus_speed_5000;
668 case IXGBE_PCI_LINK_SPEED_8000:
669 return ixgbe_bus_speed_8000;
671 return ixgbe_bus_speed_unknown;
676 * ixgbe_get_bus_info_generic - Generic set PCI bus info
677 * @hw: pointer to hardware structure
679 * Sets the PCI bus info (speed, width, type) within the ixgbe_hw structure
681 s32 ixgbe_get_bus_info_generic(struct ixgbe_hw *hw)
685 hw->bus.type = ixgbe_bus_type_pci_express;
687 /* Get the negotiated link width and speed from PCI config space */
688 link_status = ixgbe_read_pci_cfg_word(hw, IXGBE_PCI_LINK_STATUS);
690 hw->bus.width = ixgbe_convert_bus_width(link_status);
691 hw->bus.speed = ixgbe_convert_bus_speed(link_status);
693 hw->mac.ops.set_lan_id(hw);
699 * ixgbe_set_lan_id_multi_port_pcie - Set LAN id for PCIe multiple port devices
700 * @hw: pointer to the HW structure
702 * Determines the LAN function id by reading memory-mapped registers
703 * and swaps the port value if requested.
705 void ixgbe_set_lan_id_multi_port_pcie(struct ixgbe_hw *hw)
707 struct ixgbe_bus_info *bus = &hw->bus;
711 reg = IXGBE_READ_REG(hw, IXGBE_STATUS);
712 bus->func = (reg & IXGBE_STATUS_LAN_ID) >> IXGBE_STATUS_LAN_ID_SHIFT;
713 bus->lan_id = bus->func;
715 /* check for a port swap */
716 reg = IXGBE_READ_REG(hw, IXGBE_FACTPS(hw));
717 if (reg & IXGBE_FACTPS_LFS)
720 /* Get MAC instance from EEPROM for configuring CS4227 */
721 if (hw->device_id == IXGBE_DEV_ID_X550EM_A_SFP) {
722 hw->eeprom.ops.read(hw, IXGBE_EEPROM_CTRL_4, &ee_ctrl_4);
723 bus->instance_id = (ee_ctrl_4 & IXGBE_EE_CTRL_4_INST_ID) >>
724 IXGBE_EE_CTRL_4_INST_ID_SHIFT;
729 * ixgbe_stop_adapter_generic - Generic stop Tx/Rx units
730 * @hw: pointer to hardware structure
732 * Sets the adapter_stopped flag within ixgbe_hw struct. Clears interrupts,
733 * disables transmit and receive units. The adapter_stopped flag is used by
734 * the shared code and drivers to determine if the adapter is in a stopped
735 * state and should not touch the hardware.
737 s32 ixgbe_stop_adapter_generic(struct ixgbe_hw *hw)
743 * Set the adapter_stopped flag so other driver functions stop touching
746 hw->adapter_stopped = true;
748 /* Disable the receive unit */
749 hw->mac.ops.disable_rx(hw);
751 /* Clear interrupt mask to stop interrupts from being generated */
752 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK);
754 /* Clear any pending interrupts, flush previous writes */
755 IXGBE_READ_REG(hw, IXGBE_EICR);
757 /* Disable the transmit unit. Each queue must be disabled. */
758 for (i = 0; i < hw->mac.max_tx_queues; i++)
759 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(i), IXGBE_TXDCTL_SWFLSH);
761 /* Disable the receive unit by stopping each queue */
762 for (i = 0; i < hw->mac.max_rx_queues; i++) {
763 reg_val = IXGBE_READ_REG(hw, IXGBE_RXDCTL(i));
764 reg_val &= ~IXGBE_RXDCTL_ENABLE;
765 reg_val |= IXGBE_RXDCTL_SWFLSH;
766 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(i), reg_val);
769 /* flush all queues disables */
770 IXGBE_WRITE_FLUSH(hw);
771 usleep_range(1000, 2000);
774 * Prevent the PCI-E bus from from hanging by disabling PCI-E master
775 * access and verify no pending requests
777 return ixgbe_disable_pcie_master(hw);
781 * ixgbe_init_led_link_act_generic - Store the LED index link/activity.
782 * @hw: pointer to hardware structure
784 * Store the index for the link active LED. This will be used to support
787 s32 ixgbe_init_led_link_act_generic(struct ixgbe_hw *hw)
789 struct ixgbe_mac_info *mac = &hw->mac;
790 u32 led_reg, led_mode;
793 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
795 /* Get LED link active from the LEDCTL register */
796 for (i = 0; i < 4; i++) {
797 led_mode = led_reg >> IXGBE_LED_MODE_SHIFT(i);
799 if ((led_mode & IXGBE_LED_MODE_MASK_BASE) ==
800 IXGBE_LED_LINK_ACTIVE) {
801 mac->led_link_act = i;
806 /* If LEDCTL register does not have the LED link active set, then use
807 * known MAC defaults.
809 switch (hw->mac.type) {
810 case ixgbe_mac_x550em_a:
811 mac->led_link_act = 0;
813 case ixgbe_mac_X550EM_x:
814 mac->led_link_act = 1;
817 mac->led_link_act = 2;
824 * ixgbe_led_on_generic - Turns on the software controllable LEDs.
825 * @hw: pointer to hardware structure
826 * @index: led number to turn on
828 s32 ixgbe_led_on_generic(struct ixgbe_hw *hw, u32 index)
830 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
833 return IXGBE_ERR_PARAM;
835 /* To turn on the LED, set mode to ON. */
836 led_reg &= ~IXGBE_LED_MODE_MASK(index);
837 led_reg |= IXGBE_LED_ON << IXGBE_LED_MODE_SHIFT(index);
838 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
839 IXGBE_WRITE_FLUSH(hw);
845 * ixgbe_led_off_generic - Turns off the software controllable LEDs.
846 * @hw: pointer to hardware structure
847 * @index: led number to turn off
849 s32 ixgbe_led_off_generic(struct ixgbe_hw *hw, u32 index)
851 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
854 return IXGBE_ERR_PARAM;
856 /* To turn off the LED, set mode to OFF. */
857 led_reg &= ~IXGBE_LED_MODE_MASK(index);
858 led_reg |= IXGBE_LED_OFF << IXGBE_LED_MODE_SHIFT(index);
859 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
860 IXGBE_WRITE_FLUSH(hw);
866 * ixgbe_init_eeprom_params_generic - Initialize EEPROM params
867 * @hw: pointer to hardware structure
869 * Initializes the EEPROM parameters ixgbe_eeprom_info within the
870 * ixgbe_hw struct in order to set up EEPROM access.
872 s32 ixgbe_init_eeprom_params_generic(struct ixgbe_hw *hw)
874 struct ixgbe_eeprom_info *eeprom = &hw->eeprom;
878 if (eeprom->type == ixgbe_eeprom_uninitialized) {
879 eeprom->type = ixgbe_eeprom_none;
880 /* Set default semaphore delay to 10ms which is a well
882 eeprom->semaphore_delay = 10;
883 /* Clear EEPROM page size, it will be initialized as needed */
884 eeprom->word_page_size = 0;
887 * Check for EEPROM present first.
888 * If not present leave as none
890 eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw));
891 if (eec & IXGBE_EEC_PRES) {
892 eeprom->type = ixgbe_eeprom_spi;
895 * SPI EEPROM is assumed here. This code would need to
896 * change if a future EEPROM is not SPI.
898 eeprom_size = (u16)((eec & IXGBE_EEC_SIZE) >>
899 IXGBE_EEC_SIZE_SHIFT);
900 eeprom->word_size = BIT(eeprom_size +
901 IXGBE_EEPROM_WORD_SIZE_SHIFT);
904 if (eec & IXGBE_EEC_ADDR_SIZE)
905 eeprom->address_bits = 16;
907 eeprom->address_bits = 8;
908 hw_dbg(hw, "Eeprom params: type = %d, size = %d, address bits: %d\n",
909 eeprom->type, eeprom->word_size, eeprom->address_bits);
916 * ixgbe_write_eeprom_buffer_bit_bang_generic - Write EEPROM using bit-bang
917 * @hw: pointer to hardware structure
918 * @offset: offset within the EEPROM to write
919 * @words: number of words
920 * @data: 16 bit word(s) to write to EEPROM
922 * Reads 16 bit word(s) from EEPROM through bit-bang method
924 s32 ixgbe_write_eeprom_buffer_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
925 u16 words, u16 *data)
930 hw->eeprom.ops.init_params(hw);
933 return IXGBE_ERR_INVALID_ARGUMENT;
935 if (offset + words > hw->eeprom.word_size)
936 return IXGBE_ERR_EEPROM;
939 * The EEPROM page size cannot be queried from the chip. We do lazy
940 * initialization. It is worth to do that when we write large buffer.
942 if ((hw->eeprom.word_page_size == 0) &&
943 (words > IXGBE_EEPROM_PAGE_SIZE_MAX))
944 ixgbe_detect_eeprom_page_size_generic(hw, offset);
947 * We cannot hold synchronization semaphores for too long
948 * to avoid other entity starvation. However it is more efficient
949 * to read in bursts than synchronizing access for each word.
951 for (i = 0; i < words; i += IXGBE_EEPROM_RD_BUFFER_MAX_COUNT) {
952 count = (words - i) / IXGBE_EEPROM_RD_BUFFER_MAX_COUNT > 0 ?
953 IXGBE_EEPROM_RD_BUFFER_MAX_COUNT : (words - i);
954 status = ixgbe_write_eeprom_buffer_bit_bang(hw, offset + i,
965 * ixgbe_write_eeprom_buffer_bit_bang - Writes 16 bit word(s) to EEPROM
966 * @hw: pointer to hardware structure
967 * @offset: offset within the EEPROM to be written to
968 * @words: number of word(s)
969 * @data: 16 bit word(s) to be written to the EEPROM
971 * If ixgbe_eeprom_update_checksum is not called after this function, the
972 * EEPROM will most likely contain an invalid checksum.
974 static s32 ixgbe_write_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset,
975 u16 words, u16 *data)
981 u8 write_opcode = IXGBE_EEPROM_WRITE_OPCODE_SPI;
983 /* Prepare the EEPROM for writing */
984 status = ixgbe_acquire_eeprom(hw);
988 if (ixgbe_ready_eeprom(hw) != 0) {
989 ixgbe_release_eeprom(hw);
990 return IXGBE_ERR_EEPROM;
993 for (i = 0; i < words; i++) {
994 ixgbe_standby_eeprom(hw);
996 /* Send the WRITE ENABLE command (8 bit opcode) */
997 ixgbe_shift_out_eeprom_bits(hw,
998 IXGBE_EEPROM_WREN_OPCODE_SPI,
999 IXGBE_EEPROM_OPCODE_BITS);
1001 ixgbe_standby_eeprom(hw);
1003 /* Some SPI eeproms use the 8th address bit embedded
1006 if ((hw->eeprom.address_bits == 8) &&
1007 ((offset + i) >= 128))
1008 write_opcode |= IXGBE_EEPROM_A8_OPCODE_SPI;
1010 /* Send the Write command (8-bit opcode + addr) */
1011 ixgbe_shift_out_eeprom_bits(hw, write_opcode,
1012 IXGBE_EEPROM_OPCODE_BITS);
1013 ixgbe_shift_out_eeprom_bits(hw, (u16)((offset + i) * 2),
1014 hw->eeprom.address_bits);
1016 page_size = hw->eeprom.word_page_size;
1018 /* Send the data in burst via SPI */
1021 word = (word >> 8) | (word << 8);
1022 ixgbe_shift_out_eeprom_bits(hw, word, 16);
1027 /* do not wrap around page */
1028 if (((offset + i) & (page_size - 1)) ==
1031 } while (++i < words);
1033 ixgbe_standby_eeprom(hw);
1034 usleep_range(10000, 20000);
1036 /* Done with writing - release the EEPROM */
1037 ixgbe_release_eeprom(hw);
1043 * ixgbe_write_eeprom_generic - Writes 16 bit value to EEPROM
1044 * @hw: pointer to hardware structure
1045 * @offset: offset within the EEPROM to be written to
1046 * @data: 16 bit word to be written to the EEPROM
1048 * If ixgbe_eeprom_update_checksum is not called after this function, the
1049 * EEPROM will most likely contain an invalid checksum.
1051 s32 ixgbe_write_eeprom_generic(struct ixgbe_hw *hw, u16 offset, u16 data)
1053 hw->eeprom.ops.init_params(hw);
1055 if (offset >= hw->eeprom.word_size)
1056 return IXGBE_ERR_EEPROM;
1058 return ixgbe_write_eeprom_buffer_bit_bang(hw, offset, 1, &data);
1062 * ixgbe_read_eeprom_buffer_bit_bang_generic - Read EEPROM using bit-bang
1063 * @hw: pointer to hardware structure
1064 * @offset: offset within the EEPROM to be read
1065 * @words: number of word(s)
1066 * @data: read 16 bit words(s) from EEPROM
1068 * Reads 16 bit word(s) from EEPROM through bit-bang method
1070 s32 ixgbe_read_eeprom_buffer_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
1071 u16 words, u16 *data)
1076 hw->eeprom.ops.init_params(hw);
1079 return IXGBE_ERR_INVALID_ARGUMENT;
1081 if (offset + words > hw->eeprom.word_size)
1082 return IXGBE_ERR_EEPROM;
1085 * We cannot hold synchronization semaphores for too long
1086 * to avoid other entity starvation. However it is more efficient
1087 * to read in bursts than synchronizing access for each word.
1089 for (i = 0; i < words; i += IXGBE_EEPROM_RD_BUFFER_MAX_COUNT) {
1090 count = (words - i) / IXGBE_EEPROM_RD_BUFFER_MAX_COUNT > 0 ?
1091 IXGBE_EEPROM_RD_BUFFER_MAX_COUNT : (words - i);
1093 status = ixgbe_read_eeprom_buffer_bit_bang(hw, offset + i,
1104 * ixgbe_read_eeprom_buffer_bit_bang - Read EEPROM using bit-bang
1105 * @hw: pointer to hardware structure
1106 * @offset: offset within the EEPROM to be read
1107 * @words: number of word(s)
1108 * @data: read 16 bit word(s) from EEPROM
1110 * Reads 16 bit word(s) from EEPROM through bit-bang method
1112 static s32 ixgbe_read_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset,
1113 u16 words, u16 *data)
1117 u8 read_opcode = IXGBE_EEPROM_READ_OPCODE_SPI;
1120 /* Prepare the EEPROM for reading */
1121 status = ixgbe_acquire_eeprom(hw);
1125 if (ixgbe_ready_eeprom(hw) != 0) {
1126 ixgbe_release_eeprom(hw);
1127 return IXGBE_ERR_EEPROM;
1130 for (i = 0; i < words; i++) {
1131 ixgbe_standby_eeprom(hw);
1132 /* Some SPI eeproms use the 8th address bit embedded
1135 if ((hw->eeprom.address_bits == 8) &&
1136 ((offset + i) >= 128))
1137 read_opcode |= IXGBE_EEPROM_A8_OPCODE_SPI;
1139 /* Send the READ command (opcode + addr) */
1140 ixgbe_shift_out_eeprom_bits(hw, read_opcode,
1141 IXGBE_EEPROM_OPCODE_BITS);
1142 ixgbe_shift_out_eeprom_bits(hw, (u16)((offset + i) * 2),
1143 hw->eeprom.address_bits);
1145 /* Read the data. */
1146 word_in = ixgbe_shift_in_eeprom_bits(hw, 16);
1147 data[i] = (word_in >> 8) | (word_in << 8);
1150 /* End this read operation */
1151 ixgbe_release_eeprom(hw);
1157 * ixgbe_read_eeprom_bit_bang_generic - Read EEPROM word using bit-bang
1158 * @hw: pointer to hardware structure
1159 * @offset: offset within the EEPROM to be read
1160 * @data: read 16 bit value from EEPROM
1162 * Reads 16 bit value from EEPROM through bit-bang method
1164 s32 ixgbe_read_eeprom_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
1167 hw->eeprom.ops.init_params(hw);
1169 if (offset >= hw->eeprom.word_size)
1170 return IXGBE_ERR_EEPROM;
1172 return ixgbe_read_eeprom_buffer_bit_bang(hw, offset, 1, data);
1176 * ixgbe_read_eerd_buffer_generic - Read EEPROM word(s) using EERD
1177 * @hw: pointer to hardware structure
1178 * @offset: offset of word in the EEPROM to read
1179 * @words: number of word(s)
1180 * @data: 16 bit word(s) from the EEPROM
1182 * Reads a 16 bit word(s) from the EEPROM using the EERD register.
1184 s32 ixgbe_read_eerd_buffer_generic(struct ixgbe_hw *hw, u16 offset,
1185 u16 words, u16 *data)
1191 hw->eeprom.ops.init_params(hw);
1194 return IXGBE_ERR_INVALID_ARGUMENT;
1196 if (offset >= hw->eeprom.word_size)
1197 return IXGBE_ERR_EEPROM;
1199 for (i = 0; i < words; i++) {
1200 eerd = ((offset + i) << IXGBE_EEPROM_RW_ADDR_SHIFT) |
1201 IXGBE_EEPROM_RW_REG_START;
1203 IXGBE_WRITE_REG(hw, IXGBE_EERD, eerd);
1204 status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_READ);
1207 data[i] = (IXGBE_READ_REG(hw, IXGBE_EERD) >>
1208 IXGBE_EEPROM_RW_REG_DATA);
1210 hw_dbg(hw, "Eeprom read timed out\n");
1219 * ixgbe_detect_eeprom_page_size_generic - Detect EEPROM page size
1220 * @hw: pointer to hardware structure
1221 * @offset: offset within the EEPROM to be used as a scratch pad
1223 * Discover EEPROM page size by writing marching data at given offset.
1224 * This function is called only when we are writing a new large buffer
1225 * at given offset so the data would be overwritten anyway.
1227 static s32 ixgbe_detect_eeprom_page_size_generic(struct ixgbe_hw *hw,
1230 u16 data[IXGBE_EEPROM_PAGE_SIZE_MAX];
1234 for (i = 0; i < IXGBE_EEPROM_PAGE_SIZE_MAX; i++)
1237 hw->eeprom.word_page_size = IXGBE_EEPROM_PAGE_SIZE_MAX;
1238 status = ixgbe_write_eeprom_buffer_bit_bang(hw, offset,
1239 IXGBE_EEPROM_PAGE_SIZE_MAX, data);
1240 hw->eeprom.word_page_size = 0;
1244 status = ixgbe_read_eeprom_buffer_bit_bang(hw, offset, 1, data);
1249 * When writing in burst more than the actual page size
1250 * EEPROM address wraps around current page.
1252 hw->eeprom.word_page_size = IXGBE_EEPROM_PAGE_SIZE_MAX - data[0];
1254 hw_dbg(hw, "Detected EEPROM page size = %d words.\n",
1255 hw->eeprom.word_page_size);
1260 * ixgbe_read_eerd_generic - Read EEPROM word using EERD
1261 * @hw: pointer to hardware structure
1262 * @offset: offset of word in the EEPROM to read
1263 * @data: word read from the EEPROM
1265 * Reads a 16 bit word from the EEPROM using the EERD register.
1267 s32 ixgbe_read_eerd_generic(struct ixgbe_hw *hw, u16 offset, u16 *data)
1269 return ixgbe_read_eerd_buffer_generic(hw, offset, 1, data);
1273 * ixgbe_write_eewr_buffer_generic - Write EEPROM word(s) using EEWR
1274 * @hw: pointer to hardware structure
1275 * @offset: offset of word in the EEPROM to write
1276 * @words: number of words
1277 * @data: word(s) write to the EEPROM
1279 * Write a 16 bit word(s) to the EEPROM using the EEWR register.
1281 s32 ixgbe_write_eewr_buffer_generic(struct ixgbe_hw *hw, u16 offset,
1282 u16 words, u16 *data)
1288 hw->eeprom.ops.init_params(hw);
1291 return IXGBE_ERR_INVALID_ARGUMENT;
1293 if (offset >= hw->eeprom.word_size)
1294 return IXGBE_ERR_EEPROM;
1296 for (i = 0; i < words; i++) {
1297 eewr = ((offset + i) << IXGBE_EEPROM_RW_ADDR_SHIFT) |
1298 (data[i] << IXGBE_EEPROM_RW_REG_DATA) |
1299 IXGBE_EEPROM_RW_REG_START;
1301 status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_WRITE);
1303 hw_dbg(hw, "Eeprom write EEWR timed out\n");
1307 IXGBE_WRITE_REG(hw, IXGBE_EEWR, eewr);
1309 status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_WRITE);
1311 hw_dbg(hw, "Eeprom write EEWR timed out\n");
1320 * ixgbe_write_eewr_generic - Write EEPROM word using EEWR
1321 * @hw: pointer to hardware structure
1322 * @offset: offset of word in the EEPROM to write
1323 * @data: word write to the EEPROM
1325 * Write a 16 bit word to the EEPROM using the EEWR register.
1327 s32 ixgbe_write_eewr_generic(struct ixgbe_hw *hw, u16 offset, u16 data)
1329 return ixgbe_write_eewr_buffer_generic(hw, offset, 1, &data);
1333 * ixgbe_poll_eerd_eewr_done - Poll EERD read or EEWR write status
1334 * @hw: pointer to hardware structure
1335 * @ee_reg: EEPROM flag for polling
1337 * Polls the status bit (bit 1) of the EERD or EEWR to determine when the
1338 * read or write is done respectively.
1340 static s32 ixgbe_poll_eerd_eewr_done(struct ixgbe_hw *hw, u32 ee_reg)
1345 for (i = 0; i < IXGBE_EERD_EEWR_ATTEMPTS; i++) {
1346 if (ee_reg == IXGBE_NVM_POLL_READ)
1347 reg = IXGBE_READ_REG(hw, IXGBE_EERD);
1349 reg = IXGBE_READ_REG(hw, IXGBE_EEWR);
1351 if (reg & IXGBE_EEPROM_RW_REG_DONE) {
1356 return IXGBE_ERR_EEPROM;
1360 * ixgbe_acquire_eeprom - Acquire EEPROM using bit-bang
1361 * @hw: pointer to hardware structure
1363 * Prepares EEPROM for access using bit-bang method. This function should
1364 * be called before issuing a command to the EEPROM.
1366 static s32 ixgbe_acquire_eeprom(struct ixgbe_hw *hw)
1371 if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) != 0)
1372 return IXGBE_ERR_SWFW_SYNC;
1374 eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw));
1376 /* Request EEPROM Access */
1377 eec |= IXGBE_EEC_REQ;
1378 IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), eec);
1380 for (i = 0; i < IXGBE_EEPROM_GRANT_ATTEMPTS; i++) {
1381 eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw));
1382 if (eec & IXGBE_EEC_GNT)
1387 /* Release if grant not acquired */
1388 if (!(eec & IXGBE_EEC_GNT)) {
1389 eec &= ~IXGBE_EEC_REQ;
1390 IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), eec);
1391 hw_dbg(hw, "Could not acquire EEPROM grant\n");
1393 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
1394 return IXGBE_ERR_EEPROM;
1397 /* Setup EEPROM for Read/Write */
1398 /* Clear CS and SK */
1399 eec &= ~(IXGBE_EEC_CS | IXGBE_EEC_SK);
1400 IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), eec);
1401 IXGBE_WRITE_FLUSH(hw);
1407 * ixgbe_get_eeprom_semaphore - Get hardware semaphore
1408 * @hw: pointer to hardware structure
1410 * Sets the hardware semaphores so EEPROM access can occur for bit-bang method
1412 static s32 ixgbe_get_eeprom_semaphore(struct ixgbe_hw *hw)
1418 /* Get SMBI software semaphore between device drivers first */
1419 for (i = 0; i < timeout; i++) {
1421 * If the SMBI bit is 0 when we read it, then the bit will be
1422 * set and we have the semaphore
1424 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM(hw));
1425 if (!(swsm & IXGBE_SWSM_SMBI))
1427 usleep_range(50, 100);
1431 hw_dbg(hw, "Driver can't access the Eeprom - SMBI Semaphore not granted.\n");
1432 /* this release is particularly important because our attempts
1433 * above to get the semaphore may have succeeded, and if there
1434 * was a timeout, we should unconditionally clear the semaphore
1435 * bits to free the driver to make progress
1437 ixgbe_release_eeprom_semaphore(hw);
1439 usleep_range(50, 100);
1441 * If the SMBI bit is 0 when we read it, then the bit will be
1442 * set and we have the semaphore
1444 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM(hw));
1445 if (swsm & IXGBE_SWSM_SMBI) {
1446 hw_dbg(hw, "Software semaphore SMBI between device drivers not granted.\n");
1447 return IXGBE_ERR_EEPROM;
1451 /* Now get the semaphore between SW/FW through the SWESMBI bit */
1452 for (i = 0; i < timeout; i++) {
1453 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM(hw));
1455 /* Set the SW EEPROM semaphore bit to request access */
1456 swsm |= IXGBE_SWSM_SWESMBI;
1457 IXGBE_WRITE_REG(hw, IXGBE_SWSM(hw), swsm);
1459 /* If we set the bit successfully then we got the
1462 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM(hw));
1463 if (swsm & IXGBE_SWSM_SWESMBI)
1466 usleep_range(50, 100);
1469 /* Release semaphores and return error if SW EEPROM semaphore
1470 * was not granted because we don't have access to the EEPROM
1473 hw_dbg(hw, "SWESMBI Software EEPROM semaphore not granted.\n");
1474 ixgbe_release_eeprom_semaphore(hw);
1475 return IXGBE_ERR_EEPROM;
1482 * ixgbe_release_eeprom_semaphore - Release hardware semaphore
1483 * @hw: pointer to hardware structure
1485 * This function clears hardware semaphore bits.
1487 static void ixgbe_release_eeprom_semaphore(struct ixgbe_hw *hw)
1491 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM(hw));
1493 /* Release both semaphores by writing 0 to the bits SWESMBI and SMBI */
1494 swsm &= ~(IXGBE_SWSM_SWESMBI | IXGBE_SWSM_SMBI);
1495 IXGBE_WRITE_REG(hw, IXGBE_SWSM(hw), swsm);
1496 IXGBE_WRITE_FLUSH(hw);
1500 * ixgbe_ready_eeprom - Polls for EEPROM ready
1501 * @hw: pointer to hardware structure
1503 static s32 ixgbe_ready_eeprom(struct ixgbe_hw *hw)
1509 * Read "Status Register" repeatedly until the LSB is cleared. The
1510 * EEPROM will signal that the command has been completed by clearing
1511 * bit 0 of the internal status register. If it's not cleared within
1512 * 5 milliseconds, then error out.
1514 for (i = 0; i < IXGBE_EEPROM_MAX_RETRY_SPI; i += 5) {
1515 ixgbe_shift_out_eeprom_bits(hw, IXGBE_EEPROM_RDSR_OPCODE_SPI,
1516 IXGBE_EEPROM_OPCODE_BITS);
1517 spi_stat_reg = (u8)ixgbe_shift_in_eeprom_bits(hw, 8);
1518 if (!(spi_stat_reg & IXGBE_EEPROM_STATUS_RDY_SPI))
1522 ixgbe_standby_eeprom(hw);
1526 * On some parts, SPI write time could vary from 0-20mSec on 3.3V
1527 * devices (and only 0-5mSec on 5V devices)
1529 if (i >= IXGBE_EEPROM_MAX_RETRY_SPI) {
1530 hw_dbg(hw, "SPI EEPROM Status error\n");
1531 return IXGBE_ERR_EEPROM;
1538 * ixgbe_standby_eeprom - Returns EEPROM to a "standby" state
1539 * @hw: pointer to hardware structure
1541 static void ixgbe_standby_eeprom(struct ixgbe_hw *hw)
1545 eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw));
1547 /* Toggle CS to flush commands */
1548 eec |= IXGBE_EEC_CS;
1549 IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), eec);
1550 IXGBE_WRITE_FLUSH(hw);
1552 eec &= ~IXGBE_EEC_CS;
1553 IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), eec);
1554 IXGBE_WRITE_FLUSH(hw);
1559 * ixgbe_shift_out_eeprom_bits - Shift data bits out to the EEPROM.
1560 * @hw: pointer to hardware structure
1561 * @data: data to send to the EEPROM
1562 * @count: number of bits to shift out
1564 static void ixgbe_shift_out_eeprom_bits(struct ixgbe_hw *hw, u16 data,
1571 eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw));
1574 * Mask is used to shift "count" bits of "data" out to the EEPROM
1575 * one bit at a time. Determine the starting bit based on count
1577 mask = BIT(count - 1);
1579 for (i = 0; i < count; i++) {
1581 * A "1" is shifted out to the EEPROM by setting bit "DI" to a
1582 * "1", and then raising and then lowering the clock (the SK
1583 * bit controls the clock input to the EEPROM). A "0" is
1584 * shifted out to the EEPROM by setting "DI" to "0" and then
1585 * raising and then lowering the clock.
1588 eec |= IXGBE_EEC_DI;
1590 eec &= ~IXGBE_EEC_DI;
1592 IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), eec);
1593 IXGBE_WRITE_FLUSH(hw);
1597 ixgbe_raise_eeprom_clk(hw, &eec);
1598 ixgbe_lower_eeprom_clk(hw, &eec);
1601 * Shift mask to signify next bit of data to shift in to the
1607 /* We leave the "DI" bit set to "0" when we leave this routine. */
1608 eec &= ~IXGBE_EEC_DI;
1609 IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), eec);
1610 IXGBE_WRITE_FLUSH(hw);
1614 * ixgbe_shift_in_eeprom_bits - Shift data bits in from the EEPROM
1615 * @hw: pointer to hardware structure
1617 static u16 ixgbe_shift_in_eeprom_bits(struct ixgbe_hw *hw, u16 count)
1624 * In order to read a register from the EEPROM, we need to shift
1625 * 'count' bits in from the EEPROM. Bits are "shifted in" by raising
1626 * the clock input to the EEPROM (setting the SK bit), and then reading
1627 * the value of the "DO" bit. During this "shifting in" process the
1628 * "DI" bit should always be clear.
1630 eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw));
1632 eec &= ~(IXGBE_EEC_DO | IXGBE_EEC_DI);
1634 for (i = 0; i < count; i++) {
1636 ixgbe_raise_eeprom_clk(hw, &eec);
1638 eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw));
1640 eec &= ~(IXGBE_EEC_DI);
1641 if (eec & IXGBE_EEC_DO)
1644 ixgbe_lower_eeprom_clk(hw, &eec);
1651 * ixgbe_raise_eeprom_clk - Raises the EEPROM's clock input.
1652 * @hw: pointer to hardware structure
1653 * @eec: EEC register's current value
1655 static void ixgbe_raise_eeprom_clk(struct ixgbe_hw *hw, u32 *eec)
1658 * Raise the clock input to the EEPROM
1659 * (setting the SK bit), then delay
1661 *eec = *eec | IXGBE_EEC_SK;
1662 IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), *eec);
1663 IXGBE_WRITE_FLUSH(hw);
1668 * ixgbe_lower_eeprom_clk - Lowers the EEPROM's clock input.
1669 * @hw: pointer to hardware structure
1670 * @eecd: EECD's current value
1672 static void ixgbe_lower_eeprom_clk(struct ixgbe_hw *hw, u32 *eec)
1675 * Lower the clock input to the EEPROM (clearing the SK bit), then
1678 *eec = *eec & ~IXGBE_EEC_SK;
1679 IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), *eec);
1680 IXGBE_WRITE_FLUSH(hw);
1685 * ixgbe_release_eeprom - Release EEPROM, release semaphores
1686 * @hw: pointer to hardware structure
1688 static void ixgbe_release_eeprom(struct ixgbe_hw *hw)
1692 eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw));
1694 eec |= IXGBE_EEC_CS; /* Pull CS high */
1695 eec &= ~IXGBE_EEC_SK; /* Lower SCK */
1697 IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), eec);
1698 IXGBE_WRITE_FLUSH(hw);
1702 /* Stop requesting EEPROM access */
1703 eec &= ~IXGBE_EEC_REQ;
1704 IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), eec);
1706 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
1709 * Delay before attempt to obtain semaphore again to allow FW
1710 * access. semaphore_delay is in ms we need us for usleep_range
1712 usleep_range(hw->eeprom.semaphore_delay * 1000,
1713 hw->eeprom.semaphore_delay * 2000);
1717 * ixgbe_calc_eeprom_checksum_generic - Calculates and returns the checksum
1718 * @hw: pointer to hardware structure
1720 s32 ixgbe_calc_eeprom_checksum_generic(struct ixgbe_hw *hw)
1729 /* Include 0x0-0x3F in the checksum */
1730 for (i = 0; i < IXGBE_EEPROM_CHECKSUM; i++) {
1731 if (hw->eeprom.ops.read(hw, i, &word)) {
1732 hw_dbg(hw, "EEPROM read failed\n");
1738 /* Include all data from pointers except for the fw pointer */
1739 for (i = IXGBE_PCIE_ANALOG_PTR; i < IXGBE_FW_PTR; i++) {
1740 if (hw->eeprom.ops.read(hw, i, &pointer)) {
1741 hw_dbg(hw, "EEPROM read failed\n");
1742 return IXGBE_ERR_EEPROM;
1745 /* If the pointer seems invalid */
1746 if (pointer == 0xFFFF || pointer == 0)
1749 if (hw->eeprom.ops.read(hw, pointer, &length)) {
1750 hw_dbg(hw, "EEPROM read failed\n");
1751 return IXGBE_ERR_EEPROM;
1754 if (length == 0xFFFF || length == 0)
1757 for (j = pointer + 1; j <= pointer + length; j++) {
1758 if (hw->eeprom.ops.read(hw, j, &word)) {
1759 hw_dbg(hw, "EEPROM read failed\n");
1760 return IXGBE_ERR_EEPROM;
1766 checksum = (u16)IXGBE_EEPROM_SUM - checksum;
1768 return (s32)checksum;
1772 * ixgbe_validate_eeprom_checksum_generic - Validate EEPROM checksum
1773 * @hw: pointer to hardware structure
1774 * @checksum_val: calculated checksum
1776 * Performs checksum calculation and validates the EEPROM checksum. If the
1777 * caller does not need checksum_val, the value can be NULL.
1779 s32 ixgbe_validate_eeprom_checksum_generic(struct ixgbe_hw *hw,
1784 u16 read_checksum = 0;
1787 * Read the first word from the EEPROM. If this times out or fails, do
1788 * not continue or we could be in for a very long wait while every
1791 status = hw->eeprom.ops.read(hw, 0, &checksum);
1793 hw_dbg(hw, "EEPROM read failed\n");
1797 status = hw->eeprom.ops.calc_checksum(hw);
1801 checksum = (u16)(status & 0xffff);
1803 status = hw->eeprom.ops.read(hw, IXGBE_EEPROM_CHECKSUM, &read_checksum);
1805 hw_dbg(hw, "EEPROM read failed\n");
1809 /* Verify read checksum from EEPROM is the same as
1810 * calculated checksum
1812 if (read_checksum != checksum)
1813 status = IXGBE_ERR_EEPROM_CHECKSUM;
1815 /* If the user cares, return the calculated checksum */
1817 *checksum_val = checksum;
1823 * ixgbe_update_eeprom_checksum_generic - Updates the EEPROM checksum
1824 * @hw: pointer to hardware structure
1826 s32 ixgbe_update_eeprom_checksum_generic(struct ixgbe_hw *hw)
1832 * Read the first word from the EEPROM. If this times out or fails, do
1833 * not continue or we could be in for a very long wait while every
1836 status = hw->eeprom.ops.read(hw, 0, &checksum);
1838 hw_dbg(hw, "EEPROM read failed\n");
1842 status = hw->eeprom.ops.calc_checksum(hw);
1846 checksum = (u16)(status & 0xffff);
1848 status = hw->eeprom.ops.write(hw, IXGBE_EEPROM_CHECKSUM, checksum);
1854 * ixgbe_set_rar_generic - Set Rx address register
1855 * @hw: pointer to hardware structure
1856 * @index: Receive address register to write
1857 * @addr: Address to put into receive address register
1858 * @vmdq: VMDq "set" or "pool" index
1859 * @enable_addr: set flag that address is active
1861 * Puts an ethernet address into a receive address register.
1863 s32 ixgbe_set_rar_generic(struct ixgbe_hw *hw, u32 index, u8 *addr, u32 vmdq,
1866 u32 rar_low, rar_high;
1867 u32 rar_entries = hw->mac.num_rar_entries;
1869 /* Make sure we are using a valid rar index range */
1870 if (index >= rar_entries) {
1871 hw_dbg(hw, "RAR index %d is out of range.\n", index);
1872 return IXGBE_ERR_INVALID_ARGUMENT;
1875 /* setup VMDq pool selection before this RAR gets enabled */
1876 hw->mac.ops.set_vmdq(hw, index, vmdq);
1879 * HW expects these in little endian so we reverse the byte
1880 * order from network order (big endian) to little endian
1882 rar_low = ((u32)addr[0] |
1883 ((u32)addr[1] << 8) |
1884 ((u32)addr[2] << 16) |
1885 ((u32)addr[3] << 24));
1887 * Some parts put the VMDq setting in the extra RAH bits,
1888 * so save everything except the lower 16 bits that hold part
1889 * of the address and the address valid bit.
1891 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index));
1892 rar_high &= ~(0x0000FFFF | IXGBE_RAH_AV);
1893 rar_high |= ((u32)addr[4] | ((u32)addr[5] << 8));
1895 if (enable_addr != 0)
1896 rar_high |= IXGBE_RAH_AV;
1898 IXGBE_WRITE_REG(hw, IXGBE_RAL(index), rar_low);
1899 IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high);
1905 * ixgbe_clear_rar_generic - Remove Rx address register
1906 * @hw: pointer to hardware structure
1907 * @index: Receive address register to write
1909 * Clears an ethernet address from a receive address register.
1911 s32 ixgbe_clear_rar_generic(struct ixgbe_hw *hw, u32 index)
1914 u32 rar_entries = hw->mac.num_rar_entries;
1916 /* Make sure we are using a valid rar index range */
1917 if (index >= rar_entries) {
1918 hw_dbg(hw, "RAR index %d is out of range.\n", index);
1919 return IXGBE_ERR_INVALID_ARGUMENT;
1923 * Some parts put the VMDq setting in the extra RAH bits,
1924 * so save everything except the lower 16 bits that hold part
1925 * of the address and the address valid bit.
1927 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index));
1928 rar_high &= ~(0x0000FFFF | IXGBE_RAH_AV);
1930 IXGBE_WRITE_REG(hw, IXGBE_RAL(index), 0);
1931 IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high);
1933 /* clear VMDq pool/queue selection for this RAR */
1934 hw->mac.ops.clear_vmdq(hw, index, IXGBE_CLEAR_VMDQ_ALL);
1940 * ixgbe_init_rx_addrs_generic - Initializes receive address filters.
1941 * @hw: pointer to hardware structure
1943 * Places the MAC address in receive address register 0 and clears the rest
1944 * of the receive address registers. Clears the multicast table. Assumes
1945 * the receiver is in reset when the routine is called.
1947 s32 ixgbe_init_rx_addrs_generic(struct ixgbe_hw *hw)
1950 u32 rar_entries = hw->mac.num_rar_entries;
1953 * If the current mac address is valid, assume it is a software override
1954 * to the permanent address.
1955 * Otherwise, use the permanent address from the eeprom.
1957 if (!is_valid_ether_addr(hw->mac.addr)) {
1958 /* Get the MAC address from the RAR0 for later reference */
1959 hw->mac.ops.get_mac_addr(hw, hw->mac.addr);
1961 hw_dbg(hw, " Keeping Current RAR0 Addr =%pM\n", hw->mac.addr);
1963 /* Setup the receive address. */
1964 hw_dbg(hw, "Overriding MAC Address in RAR[0]\n");
1965 hw_dbg(hw, " New MAC Addr =%pM\n", hw->mac.addr);
1967 hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0, IXGBE_RAH_AV);
1970 /* clear VMDq pool/queue selection for RAR 0 */
1971 hw->mac.ops.clear_vmdq(hw, 0, IXGBE_CLEAR_VMDQ_ALL);
1973 hw->addr_ctrl.overflow_promisc = 0;
1975 hw->addr_ctrl.rar_used_count = 1;
1977 /* Zero out the other receive addresses. */
1978 hw_dbg(hw, "Clearing RAR[1-%d]\n", rar_entries - 1);
1979 for (i = 1; i < rar_entries; i++) {
1980 IXGBE_WRITE_REG(hw, IXGBE_RAL(i), 0);
1981 IXGBE_WRITE_REG(hw, IXGBE_RAH(i), 0);
1985 hw->addr_ctrl.mta_in_use = 0;
1986 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, hw->mac.mc_filter_type);
1988 hw_dbg(hw, " Clearing MTA\n");
1989 for (i = 0; i < hw->mac.mcft_size; i++)
1990 IXGBE_WRITE_REG(hw, IXGBE_MTA(i), 0);
1992 if (hw->mac.ops.init_uta_tables)
1993 hw->mac.ops.init_uta_tables(hw);
1999 * ixgbe_mta_vector - Determines bit-vector in multicast table to set
2000 * @hw: pointer to hardware structure
2001 * @mc_addr: the multicast address
2003 * Extracts the 12 bits, from a multicast address, to determine which
2004 * bit-vector to set in the multicast table. The hardware uses 12 bits, from
2005 * incoming rx multicast addresses, to determine the bit-vector to check in
2006 * the MTA. Which of the 4 combination, of 12-bits, the hardware uses is set
2007 * by the MO field of the MCSTCTRL. The MO field is set during initialization
2008 * to mc_filter_type.
2010 static s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr)
2014 switch (hw->mac.mc_filter_type) {
2015 case 0: /* use bits [47:36] of the address */
2016 vector = ((mc_addr[4] >> 4) | (((u16)mc_addr[5]) << 4));
2018 case 1: /* use bits [46:35] of the address */
2019 vector = ((mc_addr[4] >> 3) | (((u16)mc_addr[5]) << 5));
2021 case 2: /* use bits [45:34] of the address */
2022 vector = ((mc_addr[4] >> 2) | (((u16)mc_addr[5]) << 6));
2024 case 3: /* use bits [43:32] of the address */
2025 vector = ((mc_addr[4]) | (((u16)mc_addr[5]) << 8));
2027 default: /* Invalid mc_filter_type */
2028 hw_dbg(hw, "MC filter type param set incorrectly\n");
2032 /* vector can only be 12-bits or boundary will be exceeded */
2038 * ixgbe_set_mta - Set bit-vector in multicast table
2039 * @hw: pointer to hardware structure
2040 * @hash_value: Multicast address hash value
2042 * Sets the bit-vector in the multicast table.
2044 static void ixgbe_set_mta(struct ixgbe_hw *hw, u8 *mc_addr)
2050 hw->addr_ctrl.mta_in_use++;
2052 vector = ixgbe_mta_vector(hw, mc_addr);
2053 hw_dbg(hw, " bit-vector = 0x%03X\n", vector);
2056 * The MTA is a register array of 128 32-bit registers. It is treated
2057 * like an array of 4096 bits. We want to set bit
2058 * BitArray[vector_value]. So we figure out what register the bit is
2059 * in, read it, OR in the new bit, then write back the new value. The
2060 * register is determined by the upper 7 bits of the vector value and
2061 * the bit within that register are determined by the lower 5 bits of
2064 vector_reg = (vector >> 5) & 0x7F;
2065 vector_bit = vector & 0x1F;
2066 hw->mac.mta_shadow[vector_reg] |= BIT(vector_bit);
2070 * ixgbe_update_mc_addr_list_generic - Updates MAC list of multicast addresses
2071 * @hw: pointer to hardware structure
2072 * @netdev: pointer to net device structure
2074 * The given list replaces any existing list. Clears the MC addrs from receive
2075 * address registers and the multicast table. Uses unused receive address
2076 * registers for the first multicast addresses, and hashes the rest into the
2079 s32 ixgbe_update_mc_addr_list_generic(struct ixgbe_hw *hw,
2080 struct net_device *netdev)
2082 struct netdev_hw_addr *ha;
2086 * Set the new number of MC addresses that we are being requested to
2089 hw->addr_ctrl.num_mc_addrs = netdev_mc_count(netdev);
2090 hw->addr_ctrl.mta_in_use = 0;
2092 /* Clear mta_shadow */
2093 hw_dbg(hw, " Clearing MTA\n");
2094 memset(&hw->mac.mta_shadow, 0, sizeof(hw->mac.mta_shadow));
2096 /* Update mta shadow */
2097 netdev_for_each_mc_addr(ha, netdev) {
2098 hw_dbg(hw, " Adding the multicast addresses:\n");
2099 ixgbe_set_mta(hw, ha->addr);
2103 for (i = 0; i < hw->mac.mcft_size; i++)
2104 IXGBE_WRITE_REG_ARRAY(hw, IXGBE_MTA(0), i,
2105 hw->mac.mta_shadow[i]);
2107 if (hw->addr_ctrl.mta_in_use > 0)
2108 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL,
2109 IXGBE_MCSTCTRL_MFE | hw->mac.mc_filter_type);
2111 hw_dbg(hw, "ixgbe_update_mc_addr_list_generic Complete\n");
2116 * ixgbe_enable_mc_generic - Enable multicast address in RAR
2117 * @hw: pointer to hardware structure
2119 * Enables multicast address in RAR and the use of the multicast hash table.
2121 s32 ixgbe_enable_mc_generic(struct ixgbe_hw *hw)
2123 struct ixgbe_addr_filter_info *a = &hw->addr_ctrl;
2125 if (a->mta_in_use > 0)
2126 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, IXGBE_MCSTCTRL_MFE |
2127 hw->mac.mc_filter_type);
2133 * ixgbe_disable_mc_generic - Disable multicast address in RAR
2134 * @hw: pointer to hardware structure
2136 * Disables multicast address in RAR and the use of the multicast hash table.
2138 s32 ixgbe_disable_mc_generic(struct ixgbe_hw *hw)
2140 struct ixgbe_addr_filter_info *a = &hw->addr_ctrl;
2142 if (a->mta_in_use > 0)
2143 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, hw->mac.mc_filter_type);
2149 * ixgbe_fc_enable_generic - Enable flow control
2150 * @hw: pointer to hardware structure
2152 * Enable flow control according to the current settings.
2154 s32 ixgbe_fc_enable_generic(struct ixgbe_hw *hw)
2156 u32 mflcn_reg, fccfg_reg;
2161 /* Validate the water mark configuration. */
2162 if (!hw->fc.pause_time)
2163 return IXGBE_ERR_INVALID_LINK_SETTINGS;
2165 /* Low water mark of zero causes XOFF floods */
2166 for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
2167 if ((hw->fc.current_mode & ixgbe_fc_tx_pause) &&
2168 hw->fc.high_water[i]) {
2169 if (!hw->fc.low_water[i] ||
2170 hw->fc.low_water[i] >= hw->fc.high_water[i]) {
2171 hw_dbg(hw, "Invalid water mark configuration\n");
2172 return IXGBE_ERR_INVALID_LINK_SETTINGS;
2177 /* Negotiate the fc mode to use */
2178 hw->mac.ops.fc_autoneg(hw);
2180 /* Disable any previous flow control settings */
2181 mflcn_reg = IXGBE_READ_REG(hw, IXGBE_MFLCN);
2182 mflcn_reg &= ~(IXGBE_MFLCN_RPFCE_MASK | IXGBE_MFLCN_RFCE);
2184 fccfg_reg = IXGBE_READ_REG(hw, IXGBE_FCCFG);
2185 fccfg_reg &= ~(IXGBE_FCCFG_TFCE_802_3X | IXGBE_FCCFG_TFCE_PRIORITY);
2188 * The possible values of fc.current_mode are:
2189 * 0: Flow control is completely disabled
2190 * 1: Rx flow control is enabled (we can receive pause frames,
2191 * but not send pause frames).
2192 * 2: Tx flow control is enabled (we can send pause frames but
2193 * we do not support receiving pause frames).
2194 * 3: Both Rx and Tx flow control (symmetric) are enabled.
2197 switch (hw->fc.current_mode) {
2200 * Flow control is disabled by software override or autoneg.
2201 * The code below will actually disable it in the HW.
2204 case ixgbe_fc_rx_pause:
2206 * Rx Flow control is enabled and Tx Flow control is
2207 * disabled by software override. Since there really
2208 * isn't a way to advertise that we are capable of RX
2209 * Pause ONLY, we will advertise that we support both
2210 * symmetric and asymmetric Rx PAUSE. Later, we will
2211 * disable the adapter's ability to send PAUSE frames.
2213 mflcn_reg |= IXGBE_MFLCN_RFCE;
2215 case ixgbe_fc_tx_pause:
2217 * Tx Flow control is enabled, and Rx Flow control is
2218 * disabled by software override.
2220 fccfg_reg |= IXGBE_FCCFG_TFCE_802_3X;
2223 /* Flow control (both Rx and Tx) is enabled by SW override. */
2224 mflcn_reg |= IXGBE_MFLCN_RFCE;
2225 fccfg_reg |= IXGBE_FCCFG_TFCE_802_3X;
2228 hw_dbg(hw, "Flow control param set incorrectly\n");
2229 return IXGBE_ERR_CONFIG;
2232 /* Set 802.3x based flow control settings. */
2233 mflcn_reg |= IXGBE_MFLCN_DPF;
2234 IXGBE_WRITE_REG(hw, IXGBE_MFLCN, mflcn_reg);
2235 IXGBE_WRITE_REG(hw, IXGBE_FCCFG, fccfg_reg);
2237 /* Set up and enable Rx high/low water mark thresholds, enable XON. */
2238 for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
2239 if ((hw->fc.current_mode & ixgbe_fc_tx_pause) &&
2240 hw->fc.high_water[i]) {
2241 fcrtl = (hw->fc.low_water[i] << 10) | IXGBE_FCRTL_XONE;
2242 IXGBE_WRITE_REG(hw, IXGBE_FCRTL_82599(i), fcrtl);
2243 fcrth = (hw->fc.high_water[i] << 10) | IXGBE_FCRTH_FCEN;
2245 IXGBE_WRITE_REG(hw, IXGBE_FCRTL_82599(i), 0);
2247 * In order to prevent Tx hangs when the internal Tx
2248 * switch is enabled we must set the high water mark
2249 * to the Rx packet buffer size - 24KB. This allows
2250 * the Tx switch to function even under heavy Rx
2253 fcrth = IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(i)) - 24576;
2256 IXGBE_WRITE_REG(hw, IXGBE_FCRTH_82599(i), fcrth);
2259 /* Configure pause time (2 TCs per register) */
2260 reg = hw->fc.pause_time * 0x00010001;
2261 for (i = 0; i < (MAX_TRAFFIC_CLASS / 2); i++)
2262 IXGBE_WRITE_REG(hw, IXGBE_FCTTV(i), reg);
2264 IXGBE_WRITE_REG(hw, IXGBE_FCRTV, hw->fc.pause_time / 2);
2270 * ixgbe_negotiate_fc - Negotiate flow control
2271 * @hw: pointer to hardware structure
2272 * @adv_reg: flow control advertised settings
2273 * @lp_reg: link partner's flow control settings
2274 * @adv_sym: symmetric pause bit in advertisement
2275 * @adv_asm: asymmetric pause bit in advertisement
2276 * @lp_sym: symmetric pause bit in link partner advertisement
2277 * @lp_asm: asymmetric pause bit in link partner advertisement
2279 * Find the intersection between advertised settings and link partner's
2280 * advertised settings
2282 s32 ixgbe_negotiate_fc(struct ixgbe_hw *hw, u32 adv_reg, u32 lp_reg,
2283 u32 adv_sym, u32 adv_asm, u32 lp_sym, u32 lp_asm)
2285 if ((!(adv_reg)) || (!(lp_reg)))
2286 return IXGBE_ERR_FC_NOT_NEGOTIATED;
2288 if ((adv_reg & adv_sym) && (lp_reg & lp_sym)) {
2290 * Now we need to check if the user selected Rx ONLY
2291 * of pause frames. In this case, we had to advertise
2292 * FULL flow control because we could not advertise RX
2293 * ONLY. Hence, we must now check to see if we need to
2294 * turn OFF the TRANSMISSION of PAUSE frames.
2296 if (hw->fc.requested_mode == ixgbe_fc_full) {
2297 hw->fc.current_mode = ixgbe_fc_full;
2298 hw_dbg(hw, "Flow Control = FULL.\n");
2300 hw->fc.current_mode = ixgbe_fc_rx_pause;
2301 hw_dbg(hw, "Flow Control=RX PAUSE frames only\n");
2303 } else if (!(adv_reg & adv_sym) && (adv_reg & adv_asm) &&
2304 (lp_reg & lp_sym) && (lp_reg & lp_asm)) {
2305 hw->fc.current_mode = ixgbe_fc_tx_pause;
2306 hw_dbg(hw, "Flow Control = TX PAUSE frames only.\n");
2307 } else if ((adv_reg & adv_sym) && (adv_reg & adv_asm) &&
2308 !(lp_reg & lp_sym) && (lp_reg & lp_asm)) {
2309 hw->fc.current_mode = ixgbe_fc_rx_pause;
2310 hw_dbg(hw, "Flow Control = RX PAUSE frames only.\n");
2312 hw->fc.current_mode = ixgbe_fc_none;
2313 hw_dbg(hw, "Flow Control = NONE.\n");
2319 * ixgbe_fc_autoneg_fiber - Enable flow control on 1 gig fiber
2320 * @hw: pointer to hardware structure
2322 * Enable flow control according on 1 gig fiber.
2324 static s32 ixgbe_fc_autoneg_fiber(struct ixgbe_hw *hw)
2326 u32 pcs_anadv_reg, pcs_lpab_reg, linkstat;
2330 * On multispeed fiber at 1g, bail out if
2331 * - link is up but AN did not complete, or if
2332 * - link is up and AN completed but timed out
2335 linkstat = IXGBE_READ_REG(hw, IXGBE_PCS1GLSTA);
2336 if ((!!(linkstat & IXGBE_PCS1GLSTA_AN_COMPLETE) == 0) ||
2337 (!!(linkstat & IXGBE_PCS1GLSTA_AN_TIMED_OUT) == 1))
2338 return IXGBE_ERR_FC_NOT_NEGOTIATED;
2340 pcs_anadv_reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANA);
2341 pcs_lpab_reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANLP);
2343 ret_val = ixgbe_negotiate_fc(hw, pcs_anadv_reg,
2344 pcs_lpab_reg, IXGBE_PCS1GANA_SYM_PAUSE,
2345 IXGBE_PCS1GANA_ASM_PAUSE,
2346 IXGBE_PCS1GANA_SYM_PAUSE,
2347 IXGBE_PCS1GANA_ASM_PAUSE);
2353 * ixgbe_fc_autoneg_backplane - Enable flow control IEEE clause 37
2354 * @hw: pointer to hardware structure
2356 * Enable flow control according to IEEE clause 37.
2358 static s32 ixgbe_fc_autoneg_backplane(struct ixgbe_hw *hw)
2360 u32 links2, anlp1_reg, autoc_reg, links;
2364 * On backplane, bail out if
2365 * - backplane autoneg was not completed, or if
2366 * - we are 82599 and link partner is not AN enabled
2368 links = IXGBE_READ_REG(hw, IXGBE_LINKS);
2369 if ((links & IXGBE_LINKS_KX_AN_COMP) == 0)
2370 return IXGBE_ERR_FC_NOT_NEGOTIATED;
2372 if (hw->mac.type == ixgbe_mac_82599EB) {
2373 links2 = IXGBE_READ_REG(hw, IXGBE_LINKS2);
2374 if ((links2 & IXGBE_LINKS2_AN_SUPPORTED) == 0)
2375 return IXGBE_ERR_FC_NOT_NEGOTIATED;
2378 * Read the 10g AN autoc and LP ability registers and resolve
2379 * local flow control settings accordingly
2381 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
2382 anlp1_reg = IXGBE_READ_REG(hw, IXGBE_ANLP1);
2384 ret_val = ixgbe_negotiate_fc(hw, autoc_reg,
2385 anlp1_reg, IXGBE_AUTOC_SYM_PAUSE, IXGBE_AUTOC_ASM_PAUSE,
2386 IXGBE_ANLP1_SYM_PAUSE, IXGBE_ANLP1_ASM_PAUSE);
2392 * ixgbe_fc_autoneg_copper - Enable flow control IEEE clause 37
2393 * @hw: pointer to hardware structure
2395 * Enable flow control according to IEEE clause 37.
2397 static s32 ixgbe_fc_autoneg_copper(struct ixgbe_hw *hw)
2399 u16 technology_ability_reg = 0;
2400 u16 lp_technology_ability_reg = 0;
2402 hw->phy.ops.read_reg(hw, MDIO_AN_ADVERTISE,
2404 &technology_ability_reg);
2405 hw->phy.ops.read_reg(hw, MDIO_AN_LPA,
2407 &lp_technology_ability_reg);
2409 return ixgbe_negotiate_fc(hw, (u32)technology_ability_reg,
2410 (u32)lp_technology_ability_reg,
2411 IXGBE_TAF_SYM_PAUSE, IXGBE_TAF_ASM_PAUSE,
2412 IXGBE_TAF_SYM_PAUSE, IXGBE_TAF_ASM_PAUSE);
2416 * ixgbe_fc_autoneg - Configure flow control
2417 * @hw: pointer to hardware structure
2419 * Compares our advertised flow control capabilities to those advertised by
2420 * our link partner, and determines the proper flow control mode to use.
2422 void ixgbe_fc_autoneg(struct ixgbe_hw *hw)
2424 s32 ret_val = IXGBE_ERR_FC_NOT_NEGOTIATED;
2425 ixgbe_link_speed speed;
2429 * AN should have completed when the cable was plugged in.
2430 * Look for reasons to bail out. Bail out if:
2431 * - FC autoneg is disabled, or if
2434 * Since we're being called from an LSC, link is already known to be up.
2435 * So use link_up_wait_to_complete=false.
2437 if (hw->fc.disable_fc_autoneg)
2440 hw->mac.ops.check_link(hw, &speed, &link_up, false);
2444 switch (hw->phy.media_type) {
2445 /* Autoneg flow control on fiber adapters */
2446 case ixgbe_media_type_fiber:
2447 if (speed == IXGBE_LINK_SPEED_1GB_FULL)
2448 ret_val = ixgbe_fc_autoneg_fiber(hw);
2451 /* Autoneg flow control on backplane adapters */
2452 case ixgbe_media_type_backplane:
2453 ret_val = ixgbe_fc_autoneg_backplane(hw);
2456 /* Autoneg flow control on copper adapters */
2457 case ixgbe_media_type_copper:
2458 if (ixgbe_device_supports_autoneg_fc(hw))
2459 ret_val = ixgbe_fc_autoneg_copper(hw);
2468 hw->fc.fc_was_autonegged = true;
2470 hw->fc.fc_was_autonegged = false;
2471 hw->fc.current_mode = hw->fc.requested_mode;
2476 * ixgbe_pcie_timeout_poll - Return number of times to poll for completion
2477 * @hw: pointer to hardware structure
2479 * System-wide timeout range is encoded in PCIe Device Control2 register.
2481 * Add 10% to specified maximum and return the number of times to poll for
2482 * completion timeout, in units of 100 microsec. Never return less than
2483 * 800 = 80 millisec.
2485 static u32 ixgbe_pcie_timeout_poll(struct ixgbe_hw *hw)
2490 devctl2 = ixgbe_read_pci_cfg_word(hw, IXGBE_PCI_DEVICE_CONTROL2);
2491 devctl2 &= IXGBE_PCIDEVCTRL2_TIMEO_MASK;
2494 case IXGBE_PCIDEVCTRL2_65_130ms:
2495 pollcnt = 1300; /* 130 millisec */
2497 case IXGBE_PCIDEVCTRL2_260_520ms:
2498 pollcnt = 5200; /* 520 millisec */
2500 case IXGBE_PCIDEVCTRL2_1_2s:
2501 pollcnt = 20000; /* 2 sec */
2503 case IXGBE_PCIDEVCTRL2_4_8s:
2504 pollcnt = 80000; /* 8 sec */
2506 case IXGBE_PCIDEVCTRL2_17_34s:
2507 pollcnt = 34000; /* 34 sec */
2509 case IXGBE_PCIDEVCTRL2_50_100us: /* 100 microsecs */
2510 case IXGBE_PCIDEVCTRL2_1_2ms: /* 2 millisecs */
2511 case IXGBE_PCIDEVCTRL2_16_32ms: /* 32 millisec */
2512 case IXGBE_PCIDEVCTRL2_16_32ms_def: /* 32 millisec default */
2514 pollcnt = 800; /* 80 millisec minimum */
2518 /* add 10% to spec maximum */
2519 return (pollcnt * 11) / 10;
2523 * ixgbe_disable_pcie_master - Disable PCI-express master access
2524 * @hw: pointer to hardware structure
2526 * Disables PCI-Express master access and verifies there are no pending
2527 * requests. IXGBE_ERR_MASTER_REQUESTS_PENDING is returned if master disable
2528 * bit hasn't caused the master requests to be disabled, else 0
2529 * is returned signifying master requests disabled.
2531 static s32 ixgbe_disable_pcie_master(struct ixgbe_hw *hw)
2536 /* Always set this bit to ensure any future transactions are blocked */
2537 IXGBE_WRITE_REG(hw, IXGBE_CTRL, IXGBE_CTRL_GIO_DIS);
2539 /* Poll for bit to read as set */
2540 for (i = 0; i < IXGBE_PCI_MASTER_DISABLE_TIMEOUT; i++) {
2541 if (IXGBE_READ_REG(hw, IXGBE_CTRL) & IXGBE_CTRL_GIO_DIS)
2543 usleep_range(100, 120);
2545 if (i >= IXGBE_PCI_MASTER_DISABLE_TIMEOUT) {
2546 hw_dbg(hw, "GIO disable did not set - requesting resets\n");
2547 goto gio_disable_fail;
2550 /* Exit if master requests are blocked */
2551 if (!(IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_GIO) ||
2552 ixgbe_removed(hw->hw_addr))
2555 /* Poll for master request bit to clear */
2556 for (i = 0; i < IXGBE_PCI_MASTER_DISABLE_TIMEOUT; i++) {
2558 if (!(IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_GIO))
2563 * Two consecutive resets are required via CTRL.RST per datasheet
2564 * 5.2.5.3.2 Master Disable. We set a flag to inform the reset routine
2565 * of this need. The first reset prevents new master requests from
2566 * being issued by our device. We then must wait 1usec or more for any
2567 * remaining completions from the PCIe bus to trickle in, and then reset
2568 * again to clear out any effects they may have had on our device.
2570 hw_dbg(hw, "GIO Master Disable bit didn't clear - requesting resets\n");
2572 hw->mac.flags |= IXGBE_FLAGS_DOUBLE_RESET_REQUIRED;
2574 if (hw->mac.type >= ixgbe_mac_X550)
2578 * Before proceeding, make sure that the PCIe block does not have
2579 * transactions pending.
2581 poll = ixgbe_pcie_timeout_poll(hw);
2582 for (i = 0; i < poll; i++) {
2584 value = ixgbe_read_pci_cfg_word(hw, IXGBE_PCI_DEVICE_STATUS);
2585 if (ixgbe_removed(hw->hw_addr))
2587 if (!(value & IXGBE_PCI_DEVICE_STATUS_TRANSACTION_PENDING))
2591 hw_dbg(hw, "PCIe transaction pending bit also did not clear.\n");
2592 return IXGBE_ERR_MASTER_REQUESTS_PENDING;
2596 * ixgbe_acquire_swfw_sync - Acquire SWFW semaphore
2597 * @hw: pointer to hardware structure
2598 * @mask: Mask to specify which semaphore to acquire
2600 * Acquires the SWFW semaphore through the GSSR register for the specified
2601 * function (CSR, PHY0, PHY1, EEPROM, Flash)
2603 s32 ixgbe_acquire_swfw_sync(struct ixgbe_hw *hw, u32 mask)
2607 u32 fwmask = mask << 5;
2611 for (i = 0; i < timeout; i++) {
2613 * SW NVM semaphore bit is used for access to all
2614 * SW_FW_SYNC bits (not just NVM)
2616 if (ixgbe_get_eeprom_semaphore(hw))
2617 return IXGBE_ERR_SWFW_SYNC;
2619 gssr = IXGBE_READ_REG(hw, IXGBE_GSSR);
2620 if (!(gssr & (fwmask | swmask))) {
2622 IXGBE_WRITE_REG(hw, IXGBE_GSSR, gssr);
2623 ixgbe_release_eeprom_semaphore(hw);
2626 /* Resource is currently in use by FW or SW */
2627 ixgbe_release_eeprom_semaphore(hw);
2628 usleep_range(5000, 10000);
2632 /* If time expired clear the bits holding the lock and retry */
2633 if (gssr & (fwmask | swmask))
2634 ixgbe_release_swfw_sync(hw, gssr & (fwmask | swmask));
2636 usleep_range(5000, 10000);
2637 return IXGBE_ERR_SWFW_SYNC;
2641 * ixgbe_release_swfw_sync - Release SWFW semaphore
2642 * @hw: pointer to hardware structure
2643 * @mask: Mask to specify which semaphore to release
2645 * Releases the SWFW semaphore through the GSSR register for the specified
2646 * function (CSR, PHY0, PHY1, EEPROM, Flash)
2648 void ixgbe_release_swfw_sync(struct ixgbe_hw *hw, u32 mask)
2653 ixgbe_get_eeprom_semaphore(hw);
2655 gssr = IXGBE_READ_REG(hw, IXGBE_GSSR);
2657 IXGBE_WRITE_REG(hw, IXGBE_GSSR, gssr);
2659 ixgbe_release_eeprom_semaphore(hw);
2663 * prot_autoc_read_generic - Hides MAC differences needed for AUTOC read
2664 * @hw: pointer to hardware structure
2665 * @reg_val: Value we read from AUTOC
2666 * @locked: bool to indicate whether the SW/FW lock should be taken. Never
2667 * true in this the generic case.
2669 * The default case requires no protection so just to the register read.
2671 s32 prot_autoc_read_generic(struct ixgbe_hw *hw, bool *locked, u32 *reg_val)
2674 *reg_val = IXGBE_READ_REG(hw, IXGBE_AUTOC);
2679 * prot_autoc_write_generic - Hides MAC differences needed for AUTOC write
2680 * @hw: pointer to hardware structure
2681 * @reg_val: value to write to AUTOC
2682 * @locked: bool to indicate whether the SW/FW lock was already taken by
2685 s32 prot_autoc_write_generic(struct ixgbe_hw *hw, u32 reg_val, bool locked)
2687 IXGBE_WRITE_REG(hw, IXGBE_AUTOC, reg_val);
2692 * ixgbe_disable_rx_buff_generic - Stops the receive data path
2693 * @hw: pointer to hardware structure
2695 * Stops the receive data path and waits for the HW to internally
2696 * empty the Rx security block.
2698 s32 ixgbe_disable_rx_buff_generic(struct ixgbe_hw *hw)
2700 #define IXGBE_MAX_SECRX_POLL 40
2704 secrxreg = IXGBE_READ_REG(hw, IXGBE_SECRXCTRL);
2705 secrxreg |= IXGBE_SECRXCTRL_RX_DIS;
2706 IXGBE_WRITE_REG(hw, IXGBE_SECRXCTRL, secrxreg);
2707 for (i = 0; i < IXGBE_MAX_SECRX_POLL; i++) {
2708 secrxreg = IXGBE_READ_REG(hw, IXGBE_SECRXSTAT);
2709 if (secrxreg & IXGBE_SECRXSTAT_SECRX_RDY)
2712 /* Use interrupt-safe sleep just in case */
2716 /* For informational purposes only */
2717 if (i >= IXGBE_MAX_SECRX_POLL)
2718 hw_dbg(hw, "Rx unit being enabled before security path fully disabled. Continuing with init.\n");
2725 * ixgbe_enable_rx_buff - Enables the receive data path
2726 * @hw: pointer to hardware structure
2728 * Enables the receive data path
2730 s32 ixgbe_enable_rx_buff_generic(struct ixgbe_hw *hw)
2734 secrxreg = IXGBE_READ_REG(hw, IXGBE_SECRXCTRL);
2735 secrxreg &= ~IXGBE_SECRXCTRL_RX_DIS;
2736 IXGBE_WRITE_REG(hw, IXGBE_SECRXCTRL, secrxreg);
2737 IXGBE_WRITE_FLUSH(hw);
2743 * ixgbe_enable_rx_dma_generic - Enable the Rx DMA unit
2744 * @hw: pointer to hardware structure
2745 * @regval: register value to write to RXCTRL
2747 * Enables the Rx DMA unit
2749 s32 ixgbe_enable_rx_dma_generic(struct ixgbe_hw *hw, u32 regval)
2751 if (regval & IXGBE_RXCTRL_RXEN)
2752 hw->mac.ops.enable_rx(hw);
2754 hw->mac.ops.disable_rx(hw);
2760 * ixgbe_blink_led_start_generic - Blink LED based on index.
2761 * @hw: pointer to hardware structure
2762 * @index: led number to blink
2764 s32 ixgbe_blink_led_start_generic(struct ixgbe_hw *hw, u32 index)
2766 ixgbe_link_speed speed = 0;
2767 bool link_up = false;
2768 u32 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
2769 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
2770 bool locked = false;
2774 return IXGBE_ERR_PARAM;
2777 * Link must be up to auto-blink the LEDs;
2778 * Force it if link is down.
2780 hw->mac.ops.check_link(hw, &speed, &link_up, false);
2783 ret_val = hw->mac.ops.prot_autoc_read(hw, &locked, &autoc_reg);
2787 autoc_reg |= IXGBE_AUTOC_AN_RESTART;
2788 autoc_reg |= IXGBE_AUTOC_FLU;
2790 ret_val = hw->mac.ops.prot_autoc_write(hw, autoc_reg, locked);
2794 IXGBE_WRITE_FLUSH(hw);
2796 usleep_range(10000, 20000);
2799 led_reg &= ~IXGBE_LED_MODE_MASK(index);
2800 led_reg |= IXGBE_LED_BLINK(index);
2801 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
2802 IXGBE_WRITE_FLUSH(hw);
2808 * ixgbe_blink_led_stop_generic - Stop blinking LED based on index.
2809 * @hw: pointer to hardware structure
2810 * @index: led number to stop blinking
2812 s32 ixgbe_blink_led_stop_generic(struct ixgbe_hw *hw, u32 index)
2815 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
2816 bool locked = false;
2820 return IXGBE_ERR_PARAM;
2822 ret_val = hw->mac.ops.prot_autoc_read(hw, &locked, &autoc_reg);
2826 autoc_reg &= ~IXGBE_AUTOC_FLU;
2827 autoc_reg |= IXGBE_AUTOC_AN_RESTART;
2829 ret_val = hw->mac.ops.prot_autoc_write(hw, autoc_reg, locked);
2833 led_reg &= ~IXGBE_LED_MODE_MASK(index);
2834 led_reg &= ~IXGBE_LED_BLINK(index);
2835 led_reg |= IXGBE_LED_LINK_ACTIVE << IXGBE_LED_MODE_SHIFT(index);
2836 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
2837 IXGBE_WRITE_FLUSH(hw);
2843 * ixgbe_get_san_mac_addr_offset - Get SAN MAC address offset from the EEPROM
2844 * @hw: pointer to hardware structure
2845 * @san_mac_offset: SAN MAC address offset
2847 * This function will read the EEPROM location for the SAN MAC address
2848 * pointer, and returns the value at that location. This is used in both
2849 * get and set mac_addr routines.
2851 static s32 ixgbe_get_san_mac_addr_offset(struct ixgbe_hw *hw,
2852 u16 *san_mac_offset)
2857 * First read the EEPROM pointer to see if the MAC addresses are
2860 ret_val = hw->eeprom.ops.read(hw, IXGBE_SAN_MAC_ADDR_PTR,
2863 hw_err(hw, "eeprom read at offset %d failed\n",
2864 IXGBE_SAN_MAC_ADDR_PTR);
2870 * ixgbe_get_san_mac_addr_generic - SAN MAC address retrieval from the EEPROM
2871 * @hw: pointer to hardware structure
2872 * @san_mac_addr: SAN MAC address
2874 * Reads the SAN MAC address from the EEPROM, if it's available. This is
2875 * per-port, so set_lan_id() must be called before reading the addresses.
2876 * set_lan_id() is called by identify_sfp(), but this cannot be relied
2877 * upon for non-SFP connections, so we must call it here.
2879 s32 ixgbe_get_san_mac_addr_generic(struct ixgbe_hw *hw, u8 *san_mac_addr)
2881 u16 san_mac_data, san_mac_offset;
2886 * First read the EEPROM pointer to see if the MAC addresses are
2887 * available. If they're not, no point in calling set_lan_id() here.
2889 ret_val = ixgbe_get_san_mac_addr_offset(hw, &san_mac_offset);
2890 if (ret_val || san_mac_offset == 0 || san_mac_offset == 0xFFFF)
2892 goto san_mac_addr_clr;
2894 /* make sure we know which port we need to program */
2895 hw->mac.ops.set_lan_id(hw);
2896 /* apply the port offset to the address offset */
2897 (hw->bus.func) ? (san_mac_offset += IXGBE_SAN_MAC_ADDR_PORT1_OFFSET) :
2898 (san_mac_offset += IXGBE_SAN_MAC_ADDR_PORT0_OFFSET);
2899 for (i = 0; i < 3; i++) {
2900 ret_val = hw->eeprom.ops.read(hw, san_mac_offset,
2903 hw_err(hw, "eeprom read at offset %d failed\n",
2905 goto san_mac_addr_clr;
2907 san_mac_addr[i * 2] = (u8)(san_mac_data);
2908 san_mac_addr[i * 2 + 1] = (u8)(san_mac_data >> 8);
2914 /* No addresses available in this EEPROM. It's not necessarily an
2915 * error though, so just wipe the local address and return.
2917 for (i = 0; i < 6; i++)
2918 san_mac_addr[i] = 0xFF;
2923 * ixgbe_get_pcie_msix_count_generic - Gets MSI-X vector count
2924 * @hw: pointer to hardware structure
2926 * Read PCIe configuration space, and get the MSI-X vector count from
2927 * the capabilities table.
2929 u16 ixgbe_get_pcie_msix_count_generic(struct ixgbe_hw *hw)
2935 switch (hw->mac.type) {
2936 case ixgbe_mac_82598EB:
2937 pcie_offset = IXGBE_PCIE_MSIX_82598_CAPS;
2938 max_msix_count = IXGBE_MAX_MSIX_VECTORS_82598;
2940 case ixgbe_mac_82599EB:
2941 case ixgbe_mac_X540:
2942 case ixgbe_mac_X550:
2943 case ixgbe_mac_X550EM_x:
2944 case ixgbe_mac_x550em_a:
2945 pcie_offset = IXGBE_PCIE_MSIX_82599_CAPS;
2946 max_msix_count = IXGBE_MAX_MSIX_VECTORS_82599;
2952 msix_count = ixgbe_read_pci_cfg_word(hw, pcie_offset);
2953 if (ixgbe_removed(hw->hw_addr))
2955 msix_count &= IXGBE_PCIE_MSIX_TBL_SZ_MASK;
2957 /* MSI-X count is zero-based in HW */
2960 if (msix_count > max_msix_count)
2961 msix_count = max_msix_count;
2967 * ixgbe_clear_vmdq_generic - Disassociate a VMDq pool index from a rx address
2968 * @hw: pointer to hardware struct
2969 * @rar: receive address register index to disassociate
2970 * @vmdq: VMDq pool index to remove from the rar
2972 s32 ixgbe_clear_vmdq_generic(struct ixgbe_hw *hw, u32 rar, u32 vmdq)
2974 u32 mpsar_lo, mpsar_hi;
2975 u32 rar_entries = hw->mac.num_rar_entries;
2977 /* Make sure we are using a valid rar index range */
2978 if (rar >= rar_entries) {
2979 hw_dbg(hw, "RAR index %d is out of range.\n", rar);
2980 return IXGBE_ERR_INVALID_ARGUMENT;
2983 mpsar_lo = IXGBE_READ_REG(hw, IXGBE_MPSAR_LO(rar));
2984 mpsar_hi = IXGBE_READ_REG(hw, IXGBE_MPSAR_HI(rar));
2986 if (ixgbe_removed(hw->hw_addr))
2989 if (!mpsar_lo && !mpsar_hi)
2992 if (vmdq == IXGBE_CLEAR_VMDQ_ALL) {
2994 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), 0);
2998 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), 0);
3001 } else if (vmdq < 32) {
3002 mpsar_lo &= ~BIT(vmdq);
3003 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), mpsar_lo);
3005 mpsar_hi &= ~BIT(vmdq - 32);
3006 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), mpsar_hi);
3009 /* was that the last pool using this rar? */
3010 if (mpsar_lo == 0 && mpsar_hi == 0 &&
3011 rar != 0 && rar != hw->mac.san_mac_rar_index)
3012 hw->mac.ops.clear_rar(hw, rar);
3018 * ixgbe_set_vmdq_generic - Associate a VMDq pool index with a rx address
3019 * @hw: pointer to hardware struct
3020 * @rar: receive address register index to associate with a VMDq index
3021 * @vmdq: VMDq pool index
3023 s32 ixgbe_set_vmdq_generic(struct ixgbe_hw *hw, u32 rar, u32 vmdq)
3026 u32 rar_entries = hw->mac.num_rar_entries;
3028 /* Make sure we are using a valid rar index range */
3029 if (rar >= rar_entries) {
3030 hw_dbg(hw, "RAR index %d is out of range.\n", rar);
3031 return IXGBE_ERR_INVALID_ARGUMENT;
3035 mpsar = IXGBE_READ_REG(hw, IXGBE_MPSAR_LO(rar));
3037 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), mpsar);
3039 mpsar = IXGBE_READ_REG(hw, IXGBE_MPSAR_HI(rar));
3040 mpsar |= BIT(vmdq - 32);
3041 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), mpsar);
3047 * This function should only be involved in the IOV mode.
3048 * In IOV mode, Default pool is next pool after the number of
3049 * VFs advertized and not 0.
3050 * MPSAR table needs to be updated for SAN_MAC RAR [hw->mac.san_mac_rar_index]
3052 * ixgbe_set_vmdq_san_mac - Associate default VMDq pool index with a rx address
3053 * @hw: pointer to hardware struct
3054 * @vmdq: VMDq pool index
3056 s32 ixgbe_set_vmdq_san_mac_generic(struct ixgbe_hw *hw, u32 vmdq)
3058 u32 rar = hw->mac.san_mac_rar_index;
3061 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), BIT(vmdq));
3062 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), 0);
3064 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), 0);
3065 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), BIT(vmdq - 32));
3072 * ixgbe_init_uta_tables_generic - Initialize the Unicast Table Array
3073 * @hw: pointer to hardware structure
3075 s32 ixgbe_init_uta_tables_generic(struct ixgbe_hw *hw)
3079 for (i = 0; i < 128; i++)
3080 IXGBE_WRITE_REG(hw, IXGBE_UTA(i), 0);
3086 * ixgbe_find_vlvf_slot - find the vlanid or the first empty slot
3087 * @hw: pointer to hardware structure
3088 * @vlan: VLAN id to write to VLAN filter
3090 * return the VLVF index where this VLAN id should be placed
3093 static s32 ixgbe_find_vlvf_slot(struct ixgbe_hw *hw, u32 vlan, bool vlvf_bypass)
3095 s32 regindex, first_empty_slot;
3098 /* short cut the special case */
3102 /* if vlvf_bypass is set we don't want to use an empty slot, we
3103 * will simply bypass the VLVF if there are no entries present in the
3104 * VLVF that contain our VLAN
3106 first_empty_slot = vlvf_bypass ? IXGBE_ERR_NO_SPACE : 0;
3108 /* add VLAN enable bit for comparison */
3109 vlan |= IXGBE_VLVF_VIEN;
3111 /* Search for the vlan id in the VLVF entries. Save off the first empty
3112 * slot found along the way.
3114 * pre-decrement loop covering (IXGBE_VLVF_ENTRIES - 1) .. 1
3116 for (regindex = IXGBE_VLVF_ENTRIES; --regindex;) {
3117 bits = IXGBE_READ_REG(hw, IXGBE_VLVF(regindex));
3120 if (!first_empty_slot && !bits)
3121 first_empty_slot = regindex;
3124 /* If we are here then we didn't find the VLAN. Return first empty
3125 * slot we found during our search, else error.
3127 if (!first_empty_slot)
3128 hw_dbg(hw, "No space in VLVF.\n");
3130 return first_empty_slot ? : IXGBE_ERR_NO_SPACE;
3134 * ixgbe_set_vfta_generic - Set VLAN filter table
3135 * @hw: pointer to hardware structure
3136 * @vlan: VLAN id to write to VLAN filter
3137 * @vind: VMDq output index that maps queue to VLAN id in VFVFB
3138 * @vlan_on: boolean flag to turn on/off VLAN in VFVF
3139 * @vlvf_bypass: boolean flag indicating updating default pool is okay
3141 * Turn on/off specified VLAN in the VLAN filter table.
3143 s32 ixgbe_set_vfta_generic(struct ixgbe_hw *hw, u32 vlan, u32 vind,
3144 bool vlan_on, bool vlvf_bypass)
3146 u32 regidx, vfta_delta, vfta, bits;
3149 if ((vlan > 4095) || (vind > 63))
3150 return IXGBE_ERR_PARAM;
3153 * this is a 2 part operation - first the VFTA, then the
3154 * VLVF and VLVFB if VT Mode is set
3155 * We don't write the VFTA until we know the VLVF part succeeded.
3159 * The VFTA is a bitstring made up of 128 32-bit registers
3160 * that enable the particular VLAN id, much like the MTA:
3161 * bits[11-5]: which register
3162 * bits[4-0]: which bit in the register
3165 vfta_delta = BIT(vlan % 32);
3166 vfta = IXGBE_READ_REG(hw, IXGBE_VFTA(regidx));
3168 /* vfta_delta represents the difference between the current value
3169 * of vfta and the value we want in the register. Since the diff
3170 * is an XOR mask we can just update vfta using an XOR.
3172 vfta_delta &= vlan_on ? ~vfta : vfta;
3178 * make sure the vlan is in VLVF
3179 * set the vind bit in the matching VLVFB
3181 * clear the pool bit and possibly the vind
3183 if (!(IXGBE_READ_REG(hw, IXGBE_VT_CTL) & IXGBE_VT_CTL_VT_ENABLE))
3186 vlvf_index = ixgbe_find_vlvf_slot(hw, vlan, vlvf_bypass);
3187 if (vlvf_index < 0) {
3193 bits = IXGBE_READ_REG(hw, IXGBE_VLVFB(vlvf_index * 2 + vind / 32));
3195 /* set the pool bit */
3196 bits |= BIT(vind % 32);
3200 /* clear the pool bit */
3201 bits ^= BIT(vind % 32);
3204 !IXGBE_READ_REG(hw, IXGBE_VLVFB(vlvf_index * 2 + 1 - vind / 32))) {
3205 /* Clear VFTA first, then disable VLVF. Otherwise
3206 * we run the risk of stray packets leaking into
3207 * the PF via the default pool
3210 IXGBE_WRITE_REG(hw, IXGBE_VFTA(regidx), vfta);
3212 /* disable VLVF and clear remaining bit from pool */
3213 IXGBE_WRITE_REG(hw, IXGBE_VLVF(vlvf_index), 0);
3214 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(vlvf_index * 2 + vind / 32), 0);
3219 /* If there are still bits set in the VLVFB registers
3220 * for the VLAN ID indicated we need to see if the
3221 * caller is requesting that we clear the VFTA entry bit.
3222 * If the caller has requested that we clear the VFTA
3223 * entry bit but there are still pools/VFs using this VLAN
3224 * ID entry then ignore the request. We're not worried
3225 * about the case where we're turning the VFTA VLAN ID
3226 * entry bit on, only when requested to turn it off as
3227 * there may be multiple pools and/or VFs using the
3228 * VLAN ID entry. In that case we cannot clear the
3229 * VFTA bit until all pools/VFs using that VLAN ID have also
3230 * been cleared. This will be indicated by "bits" being
3236 /* record pool change and enable VLAN ID if not already enabled */
3237 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(vlvf_index * 2 + vind / 32), bits);
3238 IXGBE_WRITE_REG(hw, IXGBE_VLVF(vlvf_index), IXGBE_VLVF_VIEN | vlan);
3241 /* Update VFTA now that we are ready for traffic */
3243 IXGBE_WRITE_REG(hw, IXGBE_VFTA(regidx), vfta);
3249 * ixgbe_clear_vfta_generic - Clear VLAN filter table
3250 * @hw: pointer to hardware structure
3252 * Clears the VLAN filer table, and the VMDq index associated with the filter
3254 s32 ixgbe_clear_vfta_generic(struct ixgbe_hw *hw)
3258 for (offset = 0; offset < hw->mac.vft_size; offset++)
3259 IXGBE_WRITE_REG(hw, IXGBE_VFTA(offset), 0);
3261 for (offset = 0; offset < IXGBE_VLVF_ENTRIES; offset++) {
3262 IXGBE_WRITE_REG(hw, IXGBE_VLVF(offset), 0);
3263 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(offset * 2), 0);
3264 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(offset * 2 + 1), 0);
3271 * ixgbe_need_crosstalk_fix - Determine if we need to do cross talk fix
3272 * @hw: pointer to hardware structure
3274 * Contains the logic to identify if we need to verify link for the
3277 static bool ixgbe_need_crosstalk_fix(struct ixgbe_hw *hw)
3279 /* Does FW say we need the fix */
3280 if (!hw->need_crosstalk_fix)
3283 /* Only consider SFP+ PHYs i.e. media type fiber */
3284 switch (hw->mac.ops.get_media_type(hw)) {
3285 case ixgbe_media_type_fiber:
3286 case ixgbe_media_type_fiber_qsfp:
3296 * ixgbe_check_mac_link_generic - Determine link and speed status
3297 * @hw: pointer to hardware structure
3298 * @speed: pointer to link speed
3299 * @link_up: true when link is up
3300 * @link_up_wait_to_complete: bool used to wait for link up or not
3302 * Reads the links register to determine if link is up and the current speed
3304 s32 ixgbe_check_mac_link_generic(struct ixgbe_hw *hw, ixgbe_link_speed *speed,
3305 bool *link_up, bool link_up_wait_to_complete)
3307 u32 links_reg, links_orig;
3310 /* If Crosstalk fix enabled do the sanity check of making sure
3311 * the SFP+ cage is full.
3313 if (ixgbe_need_crosstalk_fix(hw)) {
3316 switch (hw->mac.type) {
3317 case ixgbe_mac_82599EB:
3318 sfp_cage_full = IXGBE_READ_REG(hw, IXGBE_ESDP) &
3321 case ixgbe_mac_X550EM_x:
3322 case ixgbe_mac_x550em_a:
3323 sfp_cage_full = IXGBE_READ_REG(hw, IXGBE_ESDP) &
3327 /* sanity check - No SFP+ devices here */
3328 sfp_cage_full = false;
3332 if (!sfp_cage_full) {
3334 *speed = IXGBE_LINK_SPEED_UNKNOWN;
3339 /* clear the old state */
3340 links_orig = IXGBE_READ_REG(hw, IXGBE_LINKS);
3342 links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
3344 if (links_orig != links_reg) {
3345 hw_dbg(hw, "LINKS changed from %08X to %08X\n",
3346 links_orig, links_reg);
3349 if (link_up_wait_to_complete) {
3350 for (i = 0; i < IXGBE_LINK_UP_TIME; i++) {
3351 if (links_reg & IXGBE_LINKS_UP) {
3358 links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
3361 if (links_reg & IXGBE_LINKS_UP)
3367 switch (links_reg & IXGBE_LINKS_SPEED_82599) {
3368 case IXGBE_LINKS_SPEED_10G_82599:
3369 if ((hw->mac.type >= ixgbe_mac_X550) &&
3370 (links_reg & IXGBE_LINKS_SPEED_NON_STD))
3371 *speed = IXGBE_LINK_SPEED_2_5GB_FULL;
3373 *speed = IXGBE_LINK_SPEED_10GB_FULL;
3375 case IXGBE_LINKS_SPEED_1G_82599:
3376 *speed = IXGBE_LINK_SPEED_1GB_FULL;
3378 case IXGBE_LINKS_SPEED_100_82599:
3379 if ((hw->mac.type >= ixgbe_mac_X550) &&
3380 (links_reg & IXGBE_LINKS_SPEED_NON_STD))
3381 *speed = IXGBE_LINK_SPEED_5GB_FULL;
3383 *speed = IXGBE_LINK_SPEED_100_FULL;
3386 *speed = IXGBE_LINK_SPEED_UNKNOWN;
3393 * ixgbe_get_wwn_prefix_generic - Get alternative WWNN/WWPN prefix from
3395 * @hw: pointer to hardware structure
3396 * @wwnn_prefix: the alternative WWNN prefix
3397 * @wwpn_prefix: the alternative WWPN prefix
3399 * This function will read the EEPROM from the alternative SAN MAC address
3400 * block to check the support for the alternative WWNN/WWPN prefix support.
3402 s32 ixgbe_get_wwn_prefix_generic(struct ixgbe_hw *hw, u16 *wwnn_prefix,
3406 u16 alt_san_mac_blk_offset;
3408 /* clear output first */
3409 *wwnn_prefix = 0xFFFF;
3410 *wwpn_prefix = 0xFFFF;
3412 /* check if alternative SAN MAC is supported */
3413 offset = IXGBE_ALT_SAN_MAC_ADDR_BLK_PTR;
3414 if (hw->eeprom.ops.read(hw, offset, &alt_san_mac_blk_offset))
3415 goto wwn_prefix_err;
3417 if ((alt_san_mac_blk_offset == 0) ||
3418 (alt_san_mac_blk_offset == 0xFFFF))
3421 /* check capability in alternative san mac address block */
3422 offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_CAPS_OFFSET;
3423 if (hw->eeprom.ops.read(hw, offset, &caps))
3424 goto wwn_prefix_err;
3425 if (!(caps & IXGBE_ALT_SAN_MAC_ADDR_CAPS_ALTWWN))
3428 /* get the corresponding prefix for WWNN/WWPN */
3429 offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_WWNN_OFFSET;
3430 if (hw->eeprom.ops.read(hw, offset, wwnn_prefix))
3431 hw_err(hw, "eeprom read at offset %d failed\n", offset);
3433 offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_WWPN_OFFSET;
3434 if (hw->eeprom.ops.read(hw, offset, wwpn_prefix))
3435 goto wwn_prefix_err;
3440 hw_err(hw, "eeprom read at offset %d failed\n", offset);
3445 * ixgbe_set_mac_anti_spoofing - Enable/Disable MAC anti-spoofing
3446 * @hw: pointer to hardware structure
3447 * @enable: enable or disable switch for MAC anti-spoofing
3448 * @vf: Virtual Function pool - VF Pool to set for MAC anti-spoofing
3451 void ixgbe_set_mac_anti_spoofing(struct ixgbe_hw *hw, bool enable, int vf)
3453 int vf_target_reg = vf >> 3;
3454 int vf_target_shift = vf % 8;
3457 if (hw->mac.type == ixgbe_mac_82598EB)
3460 pfvfspoof = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg));
3462 pfvfspoof |= BIT(vf_target_shift);
3464 pfvfspoof &= ~BIT(vf_target_shift);
3465 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), pfvfspoof);
3469 * ixgbe_set_vlan_anti_spoofing - Enable/Disable VLAN anti-spoofing
3470 * @hw: pointer to hardware structure
3471 * @enable: enable or disable switch for VLAN anti-spoofing
3472 * @pf: Virtual Function pool - VF Pool to set for VLAN anti-spoofing
3475 void ixgbe_set_vlan_anti_spoofing(struct ixgbe_hw *hw, bool enable, int vf)
3477 int vf_target_reg = vf >> 3;
3478 int vf_target_shift = vf % 8 + IXGBE_SPOOF_VLANAS_SHIFT;
3481 if (hw->mac.type == ixgbe_mac_82598EB)
3484 pfvfspoof = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg));
3486 pfvfspoof |= BIT(vf_target_shift);
3488 pfvfspoof &= ~BIT(vf_target_shift);
3489 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), pfvfspoof);
3493 * ixgbe_get_device_caps_generic - Get additional device capabilities
3494 * @hw: pointer to hardware structure
3495 * @device_caps: the EEPROM word with the extra device capabilities
3497 * This function will read the EEPROM location for the device capabilities,
3498 * and return the word through device_caps.
3500 s32 ixgbe_get_device_caps_generic(struct ixgbe_hw *hw, u16 *device_caps)
3502 hw->eeprom.ops.read(hw, IXGBE_DEVICE_CAPS, device_caps);
3508 * ixgbe_set_rxpba_generic - Initialize RX packet buffer
3509 * @hw: pointer to hardware structure
3510 * @num_pb: number of packet buffers to allocate
3511 * @headroom: reserve n KB of headroom
3512 * @strategy: packet buffer allocation strategy
3514 void ixgbe_set_rxpba_generic(struct ixgbe_hw *hw,
3519 u32 pbsize = hw->mac.rx_pb_size;
3521 u32 rxpktsize, txpktsize, txpbthresh;
3523 /* Reserve headroom */
3529 /* Divide remaining packet buffer space amongst the number
3530 * of packet buffers requested using supplied strategy.
3533 case (PBA_STRATEGY_WEIGHTED):
3534 /* pba_80_48 strategy weight first half of packet buffer with
3535 * 5/8 of the packet buffer space.
3537 rxpktsize = ((pbsize * 5 * 2) / (num_pb * 8));
3538 pbsize -= rxpktsize * (num_pb / 2);
3539 rxpktsize <<= IXGBE_RXPBSIZE_SHIFT;
3540 for (; i < (num_pb / 2); i++)
3541 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpktsize);
3542 /* Fall through to configure remaining packet buffers */
3543 case (PBA_STRATEGY_EQUAL):
3544 /* Divide the remaining Rx packet buffer evenly among the TCs */
3545 rxpktsize = (pbsize / (num_pb - i)) << IXGBE_RXPBSIZE_SHIFT;
3546 for (; i < num_pb; i++)
3547 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpktsize);
3554 * Setup Tx packet buffer and threshold equally for all TCs
3555 * TXPBTHRESH register is set in K so divide by 1024 and subtract
3556 * 10 since the largest packet we support is just over 9K.
3558 txpktsize = IXGBE_TXPBSIZE_MAX / num_pb;
3559 txpbthresh = (txpktsize / 1024) - IXGBE_TXPKT_SIZE_MAX;
3560 for (i = 0; i < num_pb; i++) {
3561 IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), txpktsize);
3562 IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), txpbthresh);
3565 /* Clear unused TCs, if any, to zero buffer size*/
3566 for (; i < IXGBE_MAX_PB; i++) {
3567 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), 0);
3568 IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), 0);
3569 IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), 0);
3574 * ixgbe_calculate_checksum - Calculate checksum for buffer
3575 * @buffer: pointer to EEPROM
3576 * @length: size of EEPROM to calculate a checksum for
3578 * Calculates the checksum for some buffer on a specified length. The
3579 * checksum calculated is returned.
3581 static u8 ixgbe_calculate_checksum(u8 *buffer, u32 length)
3589 for (i = 0; i < length; i++)
3592 return (u8) (0 - sum);
3596 * ixgbe_host_interface_command - Issue command to manageability block
3597 * @hw: pointer to the HW structure
3598 * @buffer: contains the command to write and where the return status will
3600 * @length: length of buffer, must be multiple of 4 bytes
3601 * @timeout: time in ms to wait for command completion
3602 * @return_data: read and return data from the buffer (true) or not (false)
3603 * Needed because FW structures are big endian and decoding of
3604 * these fields can be 8 bit or 16 bit based on command. Decoding
3605 * is not easily understood without making a table of commands.
3606 * So we will leave this up to the caller to read back the data
3609 * Communicates with the manageability block. On success return 0
3610 * else return IXGBE_ERR_HOST_INTERFACE_COMMAND.
3612 s32 ixgbe_host_interface_command(struct ixgbe_hw *hw, void *buffer,
3613 u32 length, u32 timeout,
3616 u32 hdr_size = sizeof(struct ixgbe_hic_hdr);
3617 u32 hicr, i, bi, fwsts;
3618 u16 buf_len, dword_len;
3620 struct ixgbe_hic_hdr hdr;
3625 if (!length || length > IXGBE_HI_MAX_BLOCK_BYTE_LENGTH) {
3626 hw_dbg(hw, "Buffer length failure buffersize-%d.\n", length);
3627 return IXGBE_ERR_HOST_INTERFACE_COMMAND;
3629 /* Take management host interface semaphore */
3630 status = hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_SW_MNG_SM);
3634 /* Set bit 9 of FWSTS clearing FW reset indication */
3635 fwsts = IXGBE_READ_REG(hw, IXGBE_FWSTS);
3636 IXGBE_WRITE_REG(hw, IXGBE_FWSTS, fwsts | IXGBE_FWSTS_FWRI);
3638 /* Check that the host interface is enabled. */
3639 hicr = IXGBE_READ_REG(hw, IXGBE_HICR);
3640 if (!(hicr & IXGBE_HICR_EN)) {
3641 hw_dbg(hw, "IXGBE_HOST_EN bit disabled.\n");
3642 status = IXGBE_ERR_HOST_INTERFACE_COMMAND;
3646 /* Calculate length in DWORDs. We must be DWORD aligned */
3647 if (length % sizeof(u32)) {
3648 hw_dbg(hw, "Buffer length failure, not aligned to dword");
3649 status = IXGBE_ERR_INVALID_ARGUMENT;
3653 dword_len = length >> 2;
3655 /* The device driver writes the relevant command block
3656 * into the ram area.
3658 for (i = 0; i < dword_len; i++)
3659 IXGBE_WRITE_REG_ARRAY(hw, IXGBE_FLEX_MNG,
3660 i, cpu_to_le32(bp->u32arr[i]));
3662 /* Setting this bit tells the ARC that a new command is pending. */
3663 IXGBE_WRITE_REG(hw, IXGBE_HICR, hicr | IXGBE_HICR_C);
3665 for (i = 0; i < timeout; i++) {
3666 hicr = IXGBE_READ_REG(hw, IXGBE_HICR);
3667 if (!(hicr & IXGBE_HICR_C))
3669 usleep_range(1000, 2000);
3672 /* Check command successful completion. */
3673 if ((timeout && i == timeout) ||
3674 !(IXGBE_READ_REG(hw, IXGBE_HICR) & IXGBE_HICR_SV)) {
3675 hw_dbg(hw, "Command has failed with no status valid.\n");
3676 status = IXGBE_ERR_HOST_INTERFACE_COMMAND;
3683 /* Calculate length in DWORDs */
3684 dword_len = hdr_size >> 2;
3686 /* first pull in the header so we know the buffer length */
3687 for (bi = 0; bi < dword_len; bi++) {
3688 bp->u32arr[bi] = IXGBE_READ_REG_ARRAY(hw, IXGBE_FLEX_MNG, bi);
3689 le32_to_cpus(&bp->u32arr[bi]);
3692 /* If there is any thing in data position pull it in */
3693 buf_len = bp->hdr.buf_len;
3697 if (length < round_up(buf_len, 4) + hdr_size) {
3698 hw_dbg(hw, "Buffer not large enough for reply message.\n");
3699 status = IXGBE_ERR_HOST_INTERFACE_COMMAND;
3703 /* Calculate length in DWORDs, add 3 for odd lengths */
3704 dword_len = (buf_len + 3) >> 2;
3706 /* Pull in the rest of the buffer (bi is where we left off) */
3707 for (; bi <= dword_len; bi++) {
3708 bp->u32arr[bi] = IXGBE_READ_REG_ARRAY(hw, IXGBE_FLEX_MNG, bi);
3709 le32_to_cpus(&bp->u32arr[bi]);
3713 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_SW_MNG_SM);
3719 * ixgbe_set_fw_drv_ver_generic - Sends driver version to firmware
3720 * @hw: pointer to the HW structure
3721 * @maj: driver version major number
3722 * @min: driver version minor number
3723 * @build: driver version build number
3724 * @sub: driver version sub build number
3726 * Sends driver version number to firmware through the manageability
3727 * block. On success return 0
3728 * else returns IXGBE_ERR_SWFW_SYNC when encountering an error acquiring
3729 * semaphore or IXGBE_ERR_HOST_INTERFACE_COMMAND when command fails.
3731 s32 ixgbe_set_fw_drv_ver_generic(struct ixgbe_hw *hw, u8 maj, u8 min,
3734 struct ixgbe_hic_drv_info fw_cmd;
3738 fw_cmd.hdr.cmd = FW_CEM_CMD_DRIVER_INFO;
3739 fw_cmd.hdr.buf_len = FW_CEM_CMD_DRIVER_INFO_LEN;
3740 fw_cmd.hdr.cmd_or_resp.cmd_resv = FW_CEM_CMD_RESERVED;
3741 fw_cmd.port_num = hw->bus.func;
3742 fw_cmd.ver_maj = maj;
3743 fw_cmd.ver_min = min;
3744 fw_cmd.ver_build = build;
3745 fw_cmd.ver_sub = sub;
3746 fw_cmd.hdr.checksum = 0;
3747 fw_cmd.hdr.checksum = ixgbe_calculate_checksum((u8 *)&fw_cmd,
3748 (FW_CEM_HDR_LEN + fw_cmd.hdr.buf_len));
3752 for (i = 0; i <= FW_CEM_MAX_RETRIES; i++) {
3753 ret_val = ixgbe_host_interface_command(hw, &fw_cmd,
3755 IXGBE_HI_COMMAND_TIMEOUT,
3760 if (fw_cmd.hdr.cmd_or_resp.ret_status ==
3761 FW_CEM_RESP_STATUS_SUCCESS)
3764 ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND;
3773 * ixgbe_clear_tx_pending - Clear pending TX work from the PCIe fifo
3774 * @hw: pointer to the hardware structure
3776 * The 82599 and x540 MACs can experience issues if TX work is still pending
3777 * when a reset occurs. This function prevents this by flushing the PCIe
3778 * buffers on the system.
3780 void ixgbe_clear_tx_pending(struct ixgbe_hw *hw)
3782 u32 gcr_ext, hlreg0, i, poll;
3786 * If double reset is not requested then all transactions should
3787 * already be clear and as such there is no work to do
3789 if (!(hw->mac.flags & IXGBE_FLAGS_DOUBLE_RESET_REQUIRED))
3793 * Set loopback enable to prevent any transmits from being sent
3794 * should the link come up. This assumes that the RXCTRL.RXEN bit
3795 * has already been cleared.
3797 hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0);
3798 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0 | IXGBE_HLREG0_LPBK);
3800 /* wait for a last completion before clearing buffers */
3801 IXGBE_WRITE_FLUSH(hw);
3802 usleep_range(3000, 6000);
3804 /* Before proceeding, make sure that the PCIe block does not have
3805 * transactions pending.
3807 poll = ixgbe_pcie_timeout_poll(hw);
3808 for (i = 0; i < poll; i++) {
3809 usleep_range(100, 200);
3810 value = ixgbe_read_pci_cfg_word(hw, IXGBE_PCI_DEVICE_STATUS);
3811 if (ixgbe_removed(hw->hw_addr))
3813 if (!(value & IXGBE_PCI_DEVICE_STATUS_TRANSACTION_PENDING))
3817 /* initiate cleaning flow for buffers in the PCIe transaction layer */
3818 gcr_ext = IXGBE_READ_REG(hw, IXGBE_GCR_EXT);
3819 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT,
3820 gcr_ext | IXGBE_GCR_EXT_BUFFERS_CLEAR);
3822 /* Flush all writes and allow 20usec for all transactions to clear */
3823 IXGBE_WRITE_FLUSH(hw);
3826 /* restore previous register values */
3827 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, gcr_ext);
3828 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0);
3831 static const u8 ixgbe_emc_temp_data[4] = {
3832 IXGBE_EMC_INTERNAL_DATA,
3833 IXGBE_EMC_DIODE1_DATA,
3834 IXGBE_EMC_DIODE2_DATA,
3835 IXGBE_EMC_DIODE3_DATA
3837 static const u8 ixgbe_emc_therm_limit[4] = {
3838 IXGBE_EMC_INTERNAL_THERM_LIMIT,
3839 IXGBE_EMC_DIODE1_THERM_LIMIT,
3840 IXGBE_EMC_DIODE2_THERM_LIMIT,
3841 IXGBE_EMC_DIODE3_THERM_LIMIT
3845 * ixgbe_get_ets_data - Extracts the ETS bit data
3846 * @hw: pointer to hardware structure
3847 * @ets_cfg: extected ETS data
3848 * @ets_offset: offset of ETS data
3850 * Returns error code.
3852 static s32 ixgbe_get_ets_data(struct ixgbe_hw *hw, u16 *ets_cfg,
3857 status = hw->eeprom.ops.read(hw, IXGBE_ETS_CFG, ets_offset);
3861 if ((*ets_offset == 0x0000) || (*ets_offset == 0xFFFF))
3862 return IXGBE_NOT_IMPLEMENTED;
3864 status = hw->eeprom.ops.read(hw, *ets_offset, ets_cfg);
3868 if ((*ets_cfg & IXGBE_ETS_TYPE_MASK) != IXGBE_ETS_TYPE_EMC_SHIFTED)
3869 return IXGBE_NOT_IMPLEMENTED;
3875 * ixgbe_get_thermal_sensor_data - Gathers thermal sensor data
3876 * @hw: pointer to hardware structure
3878 * Returns the thermal sensor data structure
3880 s32 ixgbe_get_thermal_sensor_data_generic(struct ixgbe_hw *hw)
3888 struct ixgbe_thermal_sensor_data *data = &hw->mac.thermal_sensor_data;
3890 /* Only support thermal sensors attached to physical port 0 */
3891 if ((IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1))
3892 return IXGBE_NOT_IMPLEMENTED;
3894 status = ixgbe_get_ets_data(hw, &ets_cfg, &ets_offset);
3898 num_sensors = (ets_cfg & IXGBE_ETS_NUM_SENSORS_MASK);
3899 if (num_sensors > IXGBE_MAX_SENSORS)
3900 num_sensors = IXGBE_MAX_SENSORS;
3902 for (i = 0; i < num_sensors; i++) {
3906 status = hw->eeprom.ops.read(hw, (ets_offset + 1 + i),
3911 sensor_index = ((ets_sensor & IXGBE_ETS_DATA_INDEX_MASK) >>
3912 IXGBE_ETS_DATA_INDEX_SHIFT);
3913 sensor_location = ((ets_sensor & IXGBE_ETS_DATA_LOC_MASK) >>
3914 IXGBE_ETS_DATA_LOC_SHIFT);
3916 if (sensor_location != 0) {
3917 status = hw->phy.ops.read_i2c_byte(hw,
3918 ixgbe_emc_temp_data[sensor_index],
3919 IXGBE_I2C_THERMAL_SENSOR_ADDR,
3920 &data->sensor[i].temp);
3930 * ixgbe_init_thermal_sensor_thresh_generic - Inits thermal sensor thresholds
3931 * @hw: pointer to hardware structure
3933 * Inits the thermal sensor thresholds according to the NVM map
3934 * and save off the threshold and location values into mac.thermal_sensor_data
3936 s32 ixgbe_init_thermal_sensor_thresh_generic(struct ixgbe_hw *hw)
3942 u8 low_thresh_delta;
3946 struct ixgbe_thermal_sensor_data *data = &hw->mac.thermal_sensor_data;
3948 memset(data, 0, sizeof(struct ixgbe_thermal_sensor_data));
3950 /* Only support thermal sensors attached to physical port 0 */
3951 if ((IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1))
3952 return IXGBE_NOT_IMPLEMENTED;
3954 status = ixgbe_get_ets_data(hw, &ets_cfg, &ets_offset);
3958 low_thresh_delta = ((ets_cfg & IXGBE_ETS_LTHRES_DELTA_MASK) >>
3959 IXGBE_ETS_LTHRES_DELTA_SHIFT);
3960 num_sensors = (ets_cfg & IXGBE_ETS_NUM_SENSORS_MASK);
3961 if (num_sensors > IXGBE_MAX_SENSORS)
3962 num_sensors = IXGBE_MAX_SENSORS;
3964 for (i = 0; i < num_sensors; i++) {
3968 if (hw->eeprom.ops.read(hw, ets_offset + 1 + i, &ets_sensor)) {
3969 hw_err(hw, "eeprom read at offset %d failed\n",
3970 ets_offset + 1 + i);
3973 sensor_index = ((ets_sensor & IXGBE_ETS_DATA_INDEX_MASK) >>
3974 IXGBE_ETS_DATA_INDEX_SHIFT);
3975 sensor_location = ((ets_sensor & IXGBE_ETS_DATA_LOC_MASK) >>
3976 IXGBE_ETS_DATA_LOC_SHIFT);
3977 therm_limit = ets_sensor & IXGBE_ETS_DATA_HTHRESH_MASK;
3979 hw->phy.ops.write_i2c_byte(hw,
3980 ixgbe_emc_therm_limit[sensor_index],
3981 IXGBE_I2C_THERMAL_SENSOR_ADDR, therm_limit);
3983 if (sensor_location == 0)
3986 data->sensor[i].location = sensor_location;
3987 data->sensor[i].caution_thresh = therm_limit;
3988 data->sensor[i].max_op_thresh = therm_limit - low_thresh_delta;
3994 void ixgbe_disable_rx_generic(struct ixgbe_hw *hw)
3998 rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
3999 if (rxctrl & IXGBE_RXCTRL_RXEN) {
4000 if (hw->mac.type != ixgbe_mac_82598EB) {
4003 pfdtxgswc = IXGBE_READ_REG(hw, IXGBE_PFDTXGSWC);
4004 if (pfdtxgswc & IXGBE_PFDTXGSWC_VT_LBEN) {
4005 pfdtxgswc &= ~IXGBE_PFDTXGSWC_VT_LBEN;
4006 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, pfdtxgswc);
4007 hw->mac.set_lben = true;
4009 hw->mac.set_lben = false;
4012 rxctrl &= ~IXGBE_RXCTRL_RXEN;
4013 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl);
4017 void ixgbe_enable_rx_generic(struct ixgbe_hw *hw)
4021 rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
4022 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, (rxctrl | IXGBE_RXCTRL_RXEN));
4024 if (hw->mac.type != ixgbe_mac_82598EB) {
4025 if (hw->mac.set_lben) {
4028 pfdtxgswc = IXGBE_READ_REG(hw, IXGBE_PFDTXGSWC);
4029 pfdtxgswc |= IXGBE_PFDTXGSWC_VT_LBEN;
4030 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, pfdtxgswc);
4031 hw->mac.set_lben = false;
4036 /** ixgbe_mng_present - returns true when management capability is present
4037 * @hw: pointer to hardware structure
4039 bool ixgbe_mng_present(struct ixgbe_hw *hw)
4043 if (hw->mac.type < ixgbe_mac_82599EB)
4046 fwsm = IXGBE_READ_REG(hw, IXGBE_FWSM(hw));
4047 fwsm &= IXGBE_FWSM_MODE_MASK;
4048 return fwsm == IXGBE_FWSM_FW_MODE_PT;
4052 * ixgbe_setup_mac_link_multispeed_fiber - Set MAC link speed
4053 * @hw: pointer to hardware structure
4054 * @speed: new link speed
4055 * @autoneg_wait_to_complete: true when waiting for completion is needed
4057 * Set the link speed in the MAC and/or PHY register and restarts link.
4059 s32 ixgbe_setup_mac_link_multispeed_fiber(struct ixgbe_hw *hw,
4060 ixgbe_link_speed speed,
4061 bool autoneg_wait_to_complete)
4063 ixgbe_link_speed link_speed = IXGBE_LINK_SPEED_UNKNOWN;
4064 ixgbe_link_speed highest_link_speed = IXGBE_LINK_SPEED_UNKNOWN;
4068 bool autoneg, link_up = false;
4070 /* Mask off requested but non-supported speeds */
4071 status = hw->mac.ops.get_link_capabilities(hw, &link_speed, &autoneg);
4075 speed &= link_speed;
4077 /* Try each speed one by one, highest priority first. We do this in
4078 * software because 10Gb fiber doesn't support speed autonegotiation.
4080 if (speed & IXGBE_LINK_SPEED_10GB_FULL) {
4082 highest_link_speed = IXGBE_LINK_SPEED_10GB_FULL;
4084 /* If we already have link at this speed, just jump out */
4085 status = hw->mac.ops.check_link(hw, &link_speed, &link_up,
4090 if (link_speed == IXGBE_LINK_SPEED_10GB_FULL && link_up)
4093 /* Set the module link speed */
4094 switch (hw->phy.media_type) {
4095 case ixgbe_media_type_fiber:
4096 hw->mac.ops.set_rate_select_speed(hw,
4097 IXGBE_LINK_SPEED_10GB_FULL);
4099 case ixgbe_media_type_fiber_qsfp:
4100 /* QSFP module automatically detects MAC link speed */
4103 hw_dbg(hw, "Unexpected media type\n");
4107 /* Allow module to change analog characteristics (1G->10G) */
4110 status = hw->mac.ops.setup_mac_link(hw,
4111 IXGBE_LINK_SPEED_10GB_FULL,
4112 autoneg_wait_to_complete);
4116 /* Flap the Tx laser if it has not already been done */
4117 if (hw->mac.ops.flap_tx_laser)
4118 hw->mac.ops.flap_tx_laser(hw);
4120 /* Wait for the controller to acquire link. Per IEEE 802.3ap,
4121 * Section 73.10.2, we may have to wait up to 500ms if KR is
4122 * attempted. 82599 uses the same timing for 10g SFI.
4124 for (i = 0; i < 5; i++) {
4125 /* Wait for the link partner to also set speed */
4128 /* If we have link, just jump out */
4129 status = hw->mac.ops.check_link(hw, &link_speed,
4139 if (speed & IXGBE_LINK_SPEED_1GB_FULL) {
4141 if (highest_link_speed == IXGBE_LINK_SPEED_UNKNOWN)
4142 highest_link_speed = IXGBE_LINK_SPEED_1GB_FULL;
4144 /* If we already have link at this speed, just jump out */
4145 status = hw->mac.ops.check_link(hw, &link_speed, &link_up,
4150 if (link_speed == IXGBE_LINK_SPEED_1GB_FULL && link_up)
4153 /* Set the module link speed */
4154 switch (hw->phy.media_type) {
4155 case ixgbe_media_type_fiber:
4156 hw->mac.ops.set_rate_select_speed(hw,
4157 IXGBE_LINK_SPEED_1GB_FULL);
4159 case ixgbe_media_type_fiber_qsfp:
4160 /* QSFP module automatically detects link speed */
4163 hw_dbg(hw, "Unexpected media type\n");
4167 /* Allow module to change analog characteristics (10G->1G) */
4170 status = hw->mac.ops.setup_mac_link(hw,
4171 IXGBE_LINK_SPEED_1GB_FULL,
4172 autoneg_wait_to_complete);
4176 /* Flap the Tx laser if it has not already been done */
4177 if (hw->mac.ops.flap_tx_laser)
4178 hw->mac.ops.flap_tx_laser(hw);
4180 /* Wait for the link partner to also set speed */
4183 /* If we have link, just jump out */
4184 status = hw->mac.ops.check_link(hw, &link_speed, &link_up,
4193 /* We didn't get link. Configure back to the highest speed we tried,
4194 * (if there was more than one). We call ourselves back with just the
4195 * single highest speed that the user requested.
4198 status = ixgbe_setup_mac_link_multispeed_fiber(hw,
4200 autoneg_wait_to_complete);
4203 /* Set autoneg_advertised value based on input link speed */
4204 hw->phy.autoneg_advertised = 0;
4206 if (speed & IXGBE_LINK_SPEED_10GB_FULL)
4207 hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_10GB_FULL;
4209 if (speed & IXGBE_LINK_SPEED_1GB_FULL)
4210 hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_1GB_FULL;
4216 * ixgbe_set_soft_rate_select_speed - Set module link speed
4217 * @hw: pointer to hardware structure
4218 * @speed: link speed to set
4220 * Set module link speed via the soft rate select.
4222 void ixgbe_set_soft_rate_select_speed(struct ixgbe_hw *hw,
4223 ixgbe_link_speed speed)
4229 case IXGBE_LINK_SPEED_10GB_FULL:
4230 /* one bit mask same as setting on */
4231 rs = IXGBE_SFF_SOFT_RS_SELECT_10G;
4233 case IXGBE_LINK_SPEED_1GB_FULL:
4234 rs = IXGBE_SFF_SOFT_RS_SELECT_1G;
4237 hw_dbg(hw, "Invalid fixed module speed\n");
4242 status = hw->phy.ops.read_i2c_byte(hw, IXGBE_SFF_SFF_8472_OSCB,
4243 IXGBE_I2C_EEPROM_DEV_ADDR2,
4246 hw_dbg(hw, "Failed to read Rx Rate Select RS0\n");
4250 eeprom_data = (eeprom_data & ~IXGBE_SFF_SOFT_RS_SELECT_MASK) | rs;
4252 status = hw->phy.ops.write_i2c_byte(hw, IXGBE_SFF_SFF_8472_OSCB,
4253 IXGBE_I2C_EEPROM_DEV_ADDR2,
4256 hw_dbg(hw, "Failed to write Rx Rate Select RS0\n");