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 /* flow control autoneg black list */
83 switch (hw->device_id) {
84 case IXGBE_DEV_ID_X550EM_A_SFP:
85 case IXGBE_DEV_ID_X550EM_A_SFP_N:
89 hw->mac.ops.check_link(hw, &speed, &link_up, false);
90 /* if link is down, assume supported */
92 supported = speed == IXGBE_LINK_SPEED_1GB_FULL ?
99 case ixgbe_media_type_backplane:
100 if (hw->device_id == IXGBE_DEV_ID_X550EM_X_XFI)
105 case ixgbe_media_type_copper:
106 /* only some copper devices support flow control autoneg */
107 switch (hw->device_id) {
108 case IXGBE_DEV_ID_82599_T3_LOM:
109 case IXGBE_DEV_ID_X540T:
110 case IXGBE_DEV_ID_X540T1:
111 case IXGBE_DEV_ID_X550T:
112 case IXGBE_DEV_ID_X550T1:
113 case IXGBE_DEV_ID_X550EM_X_10G_T:
114 case IXGBE_DEV_ID_X550EM_A_10G_T:
115 case IXGBE_DEV_ID_X550EM_A_1G_T:
116 case IXGBE_DEV_ID_X550EM_A_1G_T_L:
127 hw_dbg(hw, "Device %x does not support flow control autoneg\n",
134 * ixgbe_setup_fc_generic - Set up flow control
135 * @hw: pointer to hardware structure
137 * Called at init time to set up flow control.
139 s32 ixgbe_setup_fc_generic(struct ixgbe_hw *hw)
142 u32 reg = 0, reg_bp = 0;
147 * Validate the requested mode. Strict IEEE mode does not allow
148 * ixgbe_fc_rx_pause because it will cause us to fail at UNH.
150 if (hw->fc.strict_ieee && hw->fc.requested_mode == ixgbe_fc_rx_pause) {
151 hw_dbg(hw, "ixgbe_fc_rx_pause not valid in strict IEEE mode\n");
152 return IXGBE_ERR_INVALID_LINK_SETTINGS;
156 * 10gig parts do not have a word in the EEPROM to determine the
157 * default flow control setting, so we explicitly set it to full.
159 if (hw->fc.requested_mode == ixgbe_fc_default)
160 hw->fc.requested_mode = ixgbe_fc_full;
163 * Set up the 1G and 10G flow control advertisement registers so the
164 * HW will be able to do fc autoneg once the cable is plugged in. If
165 * we link at 10G, the 1G advertisement is harmless and vice versa.
167 switch (hw->phy.media_type) {
168 case ixgbe_media_type_backplane:
169 /* some MAC's need RMW protection on AUTOC */
170 ret_val = hw->mac.ops.prot_autoc_read(hw, &locked, ®_bp);
174 /* fall through - only backplane uses autoc */
175 case ixgbe_media_type_fiber:
176 reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANA);
179 case ixgbe_media_type_copper:
180 hw->phy.ops.read_reg(hw, MDIO_AN_ADVERTISE,
181 MDIO_MMD_AN, ®_cu);
188 * The possible values of fc.requested_mode are:
189 * 0: Flow control is completely disabled
190 * 1: Rx flow control is enabled (we can receive pause frames,
191 * but not send pause frames).
192 * 2: Tx flow control is enabled (we can send pause frames but
193 * we do not support receiving pause frames).
194 * 3: Both Rx and Tx flow control (symmetric) are enabled.
197 switch (hw->fc.requested_mode) {
199 /* Flow control completely disabled by software override. */
200 reg &= ~(IXGBE_PCS1GANA_SYM_PAUSE | IXGBE_PCS1GANA_ASM_PAUSE);
201 if (hw->phy.media_type == ixgbe_media_type_backplane)
202 reg_bp &= ~(IXGBE_AUTOC_SYM_PAUSE |
203 IXGBE_AUTOC_ASM_PAUSE);
204 else if (hw->phy.media_type == ixgbe_media_type_copper)
205 reg_cu &= ~(IXGBE_TAF_SYM_PAUSE | IXGBE_TAF_ASM_PAUSE);
207 case ixgbe_fc_tx_pause:
209 * Tx Flow control is enabled, and Rx Flow control is
210 * disabled by software override.
212 reg |= IXGBE_PCS1GANA_ASM_PAUSE;
213 reg &= ~IXGBE_PCS1GANA_SYM_PAUSE;
214 if (hw->phy.media_type == ixgbe_media_type_backplane) {
215 reg_bp |= IXGBE_AUTOC_ASM_PAUSE;
216 reg_bp &= ~IXGBE_AUTOC_SYM_PAUSE;
217 } else if (hw->phy.media_type == ixgbe_media_type_copper) {
218 reg_cu |= IXGBE_TAF_ASM_PAUSE;
219 reg_cu &= ~IXGBE_TAF_SYM_PAUSE;
222 case ixgbe_fc_rx_pause:
224 * Rx Flow control is enabled and Tx Flow control is
225 * disabled by software override. Since there really
226 * isn't a way to advertise that we are capable of RX
227 * Pause ONLY, we will advertise that we support both
228 * symmetric and asymmetric Rx PAUSE, as such we fall
229 * through to the fc_full statement. Later, we will
230 * disable the adapter's ability to send PAUSE frames.
233 /* Flow control (both Rx and Tx) is enabled by SW override. */
234 reg |= IXGBE_PCS1GANA_SYM_PAUSE | IXGBE_PCS1GANA_ASM_PAUSE;
235 if (hw->phy.media_type == ixgbe_media_type_backplane)
236 reg_bp |= IXGBE_AUTOC_SYM_PAUSE |
237 IXGBE_AUTOC_ASM_PAUSE;
238 else if (hw->phy.media_type == ixgbe_media_type_copper)
239 reg_cu |= IXGBE_TAF_SYM_PAUSE | IXGBE_TAF_ASM_PAUSE;
242 hw_dbg(hw, "Flow control param set incorrectly\n");
243 return IXGBE_ERR_CONFIG;
246 if (hw->mac.type != ixgbe_mac_X540) {
248 * Enable auto-negotiation between the MAC & PHY;
249 * the MAC will advertise clause 37 flow control.
251 IXGBE_WRITE_REG(hw, IXGBE_PCS1GANA, reg);
252 reg = IXGBE_READ_REG(hw, IXGBE_PCS1GLCTL);
254 /* Disable AN timeout */
255 if (hw->fc.strict_ieee)
256 reg &= ~IXGBE_PCS1GLCTL_AN_1G_TIMEOUT_EN;
258 IXGBE_WRITE_REG(hw, IXGBE_PCS1GLCTL, reg);
259 hw_dbg(hw, "Set up FC; PCS1GLCTL = 0x%08X\n", reg);
263 * AUTOC restart handles negotiation of 1G and 10G on backplane
264 * and copper. There is no need to set the PCS1GCTL register.
267 if (hw->phy.media_type == ixgbe_media_type_backplane) {
268 /* Need the SW/FW semaphore around AUTOC writes if 82599 and
269 * LESM is on, likewise reset_pipeline requries the lock as
270 * it also writes AUTOC.
272 ret_val = hw->mac.ops.prot_autoc_write(hw, reg_bp, locked);
276 } else if ((hw->phy.media_type == ixgbe_media_type_copper) &&
277 ixgbe_device_supports_autoneg_fc(hw)) {
278 hw->phy.ops.write_reg(hw, MDIO_AN_ADVERTISE,
279 MDIO_MMD_AN, reg_cu);
282 hw_dbg(hw, "Set up FC; IXGBE_AUTOC = 0x%08X\n", reg);
287 * ixgbe_start_hw_generic - Prepare hardware for Tx/Rx
288 * @hw: pointer to hardware structure
290 * Starts the hardware by filling the bus info structure and media type, clears
291 * all on chip counters, initializes receive address registers, multicast
292 * table, VLAN filter table, calls routine to set up link and flow control
293 * settings, and leaves transmit and receive units disabled and uninitialized
295 s32 ixgbe_start_hw_generic(struct ixgbe_hw *hw)
301 /* Set the media type */
302 hw->phy.media_type = hw->mac.ops.get_media_type(hw);
304 /* Identify the PHY */
305 hw->phy.ops.identify(hw);
307 /* Clear the VLAN filter table */
308 hw->mac.ops.clear_vfta(hw);
310 /* Clear statistics registers */
311 hw->mac.ops.clear_hw_cntrs(hw);
313 /* Set No Snoop Disable */
314 ctrl_ext = IXGBE_READ_REG(hw, IXGBE_CTRL_EXT);
315 ctrl_ext |= IXGBE_CTRL_EXT_NS_DIS;
316 IXGBE_WRITE_REG(hw, IXGBE_CTRL_EXT, ctrl_ext);
317 IXGBE_WRITE_FLUSH(hw);
319 /* Setup flow control if method for doing so */
320 if (hw->mac.ops.setup_fc) {
321 ret_val = hw->mac.ops.setup_fc(hw);
326 /* Cashe bit indicating need for crosstalk fix */
327 switch (hw->mac.type) {
328 case ixgbe_mac_82599EB:
329 case ixgbe_mac_X550EM_x:
330 case ixgbe_mac_x550em_a:
331 hw->mac.ops.get_device_caps(hw, &device_caps);
332 if (device_caps & IXGBE_DEVICE_CAPS_NO_CROSSTALK_WR)
333 hw->need_crosstalk_fix = false;
335 hw->need_crosstalk_fix = true;
338 hw->need_crosstalk_fix = false;
342 /* Clear adapter stopped flag */
343 hw->adapter_stopped = false;
349 * ixgbe_start_hw_gen2 - Init sequence for common device family
350 * @hw: pointer to hw structure
352 * Performs the init sequence common to the second generation
354 * Devices in the second generation:
358 s32 ixgbe_start_hw_gen2(struct ixgbe_hw *hw)
362 /* Clear the rate limiters */
363 for (i = 0; i < hw->mac.max_tx_queues; i++) {
364 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, i);
365 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, 0);
367 IXGBE_WRITE_FLUSH(hw);
369 #ifndef CONFIG_ARCH_WANT_RELAX_ORDER
370 /* Disable relaxed ordering */
371 for (i = 0; i < hw->mac.max_tx_queues; i++) {
374 regval = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL_82599(i));
375 regval &= ~IXGBE_DCA_TXCTRL_DESC_WRO_EN;
376 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL_82599(i), regval);
379 for (i = 0; i < hw->mac.max_rx_queues; i++) {
382 regval = IXGBE_READ_REG(hw, IXGBE_DCA_RXCTRL(i));
383 regval &= ~(IXGBE_DCA_RXCTRL_DATA_WRO_EN |
384 IXGBE_DCA_RXCTRL_HEAD_WRO_EN);
385 IXGBE_WRITE_REG(hw, IXGBE_DCA_RXCTRL(i), regval);
392 * ixgbe_init_hw_generic - Generic hardware initialization
393 * @hw: pointer to hardware structure
395 * Initialize the hardware by resetting the hardware, filling the bus info
396 * structure and media type, clears all on chip counters, initializes receive
397 * address registers, multicast table, VLAN filter table, calls routine to set
398 * up link and flow control settings, and leaves transmit and receive units
399 * disabled and uninitialized
401 s32 ixgbe_init_hw_generic(struct ixgbe_hw *hw)
405 /* Reset the hardware */
406 status = hw->mac.ops.reset_hw(hw);
410 status = hw->mac.ops.start_hw(hw);
413 /* Initialize the LED link active for LED blink support */
414 if (hw->mac.ops.init_led_link_act)
415 hw->mac.ops.init_led_link_act(hw);
421 * ixgbe_clear_hw_cntrs_generic - Generic clear hardware counters
422 * @hw: pointer to hardware structure
424 * Clears all hardware statistics counters by reading them from the hardware
425 * Statistics counters are clear on read.
427 s32 ixgbe_clear_hw_cntrs_generic(struct ixgbe_hw *hw)
431 IXGBE_READ_REG(hw, IXGBE_CRCERRS);
432 IXGBE_READ_REG(hw, IXGBE_ILLERRC);
433 IXGBE_READ_REG(hw, IXGBE_ERRBC);
434 IXGBE_READ_REG(hw, IXGBE_MSPDC);
435 for (i = 0; i < 8; i++)
436 IXGBE_READ_REG(hw, IXGBE_MPC(i));
438 IXGBE_READ_REG(hw, IXGBE_MLFC);
439 IXGBE_READ_REG(hw, IXGBE_MRFC);
440 IXGBE_READ_REG(hw, IXGBE_RLEC);
441 IXGBE_READ_REG(hw, IXGBE_LXONTXC);
442 IXGBE_READ_REG(hw, IXGBE_LXOFFTXC);
443 if (hw->mac.type >= ixgbe_mac_82599EB) {
444 IXGBE_READ_REG(hw, IXGBE_LXONRXCNT);
445 IXGBE_READ_REG(hw, IXGBE_LXOFFRXCNT);
447 IXGBE_READ_REG(hw, IXGBE_LXONRXC);
448 IXGBE_READ_REG(hw, IXGBE_LXOFFRXC);
451 for (i = 0; i < 8; i++) {
452 IXGBE_READ_REG(hw, IXGBE_PXONTXC(i));
453 IXGBE_READ_REG(hw, IXGBE_PXOFFTXC(i));
454 if (hw->mac.type >= ixgbe_mac_82599EB) {
455 IXGBE_READ_REG(hw, IXGBE_PXONRXCNT(i));
456 IXGBE_READ_REG(hw, IXGBE_PXOFFRXCNT(i));
458 IXGBE_READ_REG(hw, IXGBE_PXONRXC(i));
459 IXGBE_READ_REG(hw, IXGBE_PXOFFRXC(i));
462 if (hw->mac.type >= ixgbe_mac_82599EB)
463 for (i = 0; i < 8; i++)
464 IXGBE_READ_REG(hw, IXGBE_PXON2OFFCNT(i));
465 IXGBE_READ_REG(hw, IXGBE_PRC64);
466 IXGBE_READ_REG(hw, IXGBE_PRC127);
467 IXGBE_READ_REG(hw, IXGBE_PRC255);
468 IXGBE_READ_REG(hw, IXGBE_PRC511);
469 IXGBE_READ_REG(hw, IXGBE_PRC1023);
470 IXGBE_READ_REG(hw, IXGBE_PRC1522);
471 IXGBE_READ_REG(hw, IXGBE_GPRC);
472 IXGBE_READ_REG(hw, IXGBE_BPRC);
473 IXGBE_READ_REG(hw, IXGBE_MPRC);
474 IXGBE_READ_REG(hw, IXGBE_GPTC);
475 IXGBE_READ_REG(hw, IXGBE_GORCL);
476 IXGBE_READ_REG(hw, IXGBE_GORCH);
477 IXGBE_READ_REG(hw, IXGBE_GOTCL);
478 IXGBE_READ_REG(hw, IXGBE_GOTCH);
479 if (hw->mac.type == ixgbe_mac_82598EB)
480 for (i = 0; i < 8; i++)
481 IXGBE_READ_REG(hw, IXGBE_RNBC(i));
482 IXGBE_READ_REG(hw, IXGBE_RUC);
483 IXGBE_READ_REG(hw, IXGBE_RFC);
484 IXGBE_READ_REG(hw, IXGBE_ROC);
485 IXGBE_READ_REG(hw, IXGBE_RJC);
486 IXGBE_READ_REG(hw, IXGBE_MNGPRC);
487 IXGBE_READ_REG(hw, IXGBE_MNGPDC);
488 IXGBE_READ_REG(hw, IXGBE_MNGPTC);
489 IXGBE_READ_REG(hw, IXGBE_TORL);
490 IXGBE_READ_REG(hw, IXGBE_TORH);
491 IXGBE_READ_REG(hw, IXGBE_TPR);
492 IXGBE_READ_REG(hw, IXGBE_TPT);
493 IXGBE_READ_REG(hw, IXGBE_PTC64);
494 IXGBE_READ_REG(hw, IXGBE_PTC127);
495 IXGBE_READ_REG(hw, IXGBE_PTC255);
496 IXGBE_READ_REG(hw, IXGBE_PTC511);
497 IXGBE_READ_REG(hw, IXGBE_PTC1023);
498 IXGBE_READ_REG(hw, IXGBE_PTC1522);
499 IXGBE_READ_REG(hw, IXGBE_MPTC);
500 IXGBE_READ_REG(hw, IXGBE_BPTC);
501 for (i = 0; i < 16; i++) {
502 IXGBE_READ_REG(hw, IXGBE_QPRC(i));
503 IXGBE_READ_REG(hw, IXGBE_QPTC(i));
504 if (hw->mac.type >= ixgbe_mac_82599EB) {
505 IXGBE_READ_REG(hw, IXGBE_QBRC_L(i));
506 IXGBE_READ_REG(hw, IXGBE_QBRC_H(i));
507 IXGBE_READ_REG(hw, IXGBE_QBTC_L(i));
508 IXGBE_READ_REG(hw, IXGBE_QBTC_H(i));
509 IXGBE_READ_REG(hw, IXGBE_QPRDC(i));
511 IXGBE_READ_REG(hw, IXGBE_QBRC(i));
512 IXGBE_READ_REG(hw, IXGBE_QBTC(i));
516 if (hw->mac.type == ixgbe_mac_X550 || hw->mac.type == ixgbe_mac_X540) {
518 hw->phy.ops.identify(hw);
519 hw->phy.ops.read_reg(hw, IXGBE_PCRC8ECL, MDIO_MMD_PCS, &i);
520 hw->phy.ops.read_reg(hw, IXGBE_PCRC8ECH, MDIO_MMD_PCS, &i);
521 hw->phy.ops.read_reg(hw, IXGBE_LDPCECL, MDIO_MMD_PCS, &i);
522 hw->phy.ops.read_reg(hw, IXGBE_LDPCECH, MDIO_MMD_PCS, &i);
529 * ixgbe_read_pba_string_generic - Reads part number string from EEPROM
530 * @hw: pointer to hardware structure
531 * @pba_num: stores the part number string from the EEPROM
532 * @pba_num_size: part number string buffer length
534 * Reads the part number string from the EEPROM.
536 s32 ixgbe_read_pba_string_generic(struct ixgbe_hw *hw, u8 *pba_num,
545 if (pba_num == NULL) {
546 hw_dbg(hw, "PBA string buffer was null\n");
547 return IXGBE_ERR_INVALID_ARGUMENT;
550 ret_val = hw->eeprom.ops.read(hw, IXGBE_PBANUM0_PTR, &data);
552 hw_dbg(hw, "NVM Read Error\n");
556 ret_val = hw->eeprom.ops.read(hw, IXGBE_PBANUM1_PTR, &pba_ptr);
558 hw_dbg(hw, "NVM Read Error\n");
563 * if data is not ptr guard the PBA must be in legacy format which
564 * means pba_ptr is actually our second data word for the PBA number
565 * and we can decode it into an ascii string
567 if (data != IXGBE_PBANUM_PTR_GUARD) {
568 hw_dbg(hw, "NVM PBA number is not stored as string\n");
570 /* we will need 11 characters to store the PBA */
571 if (pba_num_size < 11) {
572 hw_dbg(hw, "PBA string buffer too small\n");
573 return IXGBE_ERR_NO_SPACE;
576 /* extract hex string from data and pba_ptr */
577 pba_num[0] = (data >> 12) & 0xF;
578 pba_num[1] = (data >> 8) & 0xF;
579 pba_num[2] = (data >> 4) & 0xF;
580 pba_num[3] = data & 0xF;
581 pba_num[4] = (pba_ptr >> 12) & 0xF;
582 pba_num[5] = (pba_ptr >> 8) & 0xF;
585 pba_num[8] = (pba_ptr >> 4) & 0xF;
586 pba_num[9] = pba_ptr & 0xF;
588 /* put a null character on the end of our string */
591 /* switch all the data but the '-' to hex char */
592 for (offset = 0; offset < 10; offset++) {
593 if (pba_num[offset] < 0xA)
594 pba_num[offset] += '0';
595 else if (pba_num[offset] < 0x10)
596 pba_num[offset] += 'A' - 0xA;
602 ret_val = hw->eeprom.ops.read(hw, pba_ptr, &length);
604 hw_dbg(hw, "NVM Read Error\n");
608 if (length == 0xFFFF || length == 0) {
609 hw_dbg(hw, "NVM PBA number section invalid length\n");
610 return IXGBE_ERR_PBA_SECTION;
613 /* check if pba_num buffer is big enough */
614 if (pba_num_size < (((u32)length * 2) - 1)) {
615 hw_dbg(hw, "PBA string buffer too small\n");
616 return IXGBE_ERR_NO_SPACE;
619 /* trim pba length from start of string */
623 for (offset = 0; offset < length; offset++) {
624 ret_val = hw->eeprom.ops.read(hw, pba_ptr + offset, &data);
626 hw_dbg(hw, "NVM Read Error\n");
629 pba_num[offset * 2] = (u8)(data >> 8);
630 pba_num[(offset * 2) + 1] = (u8)(data & 0xFF);
632 pba_num[offset * 2] = '\0';
638 * ixgbe_get_mac_addr_generic - Generic get MAC address
639 * @hw: pointer to hardware structure
640 * @mac_addr: Adapter MAC address
642 * Reads the adapter's MAC address from first Receive Address Register (RAR0)
643 * A reset of the adapter must be performed prior to calling this function
644 * in order for the MAC address to have been loaded from the EEPROM into RAR0
646 s32 ixgbe_get_mac_addr_generic(struct ixgbe_hw *hw, u8 *mac_addr)
652 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(0));
653 rar_low = IXGBE_READ_REG(hw, IXGBE_RAL(0));
655 for (i = 0; i < 4; i++)
656 mac_addr[i] = (u8)(rar_low >> (i*8));
658 for (i = 0; i < 2; i++)
659 mac_addr[i+4] = (u8)(rar_high >> (i*8));
664 enum ixgbe_bus_width ixgbe_convert_bus_width(u16 link_status)
666 switch (link_status & IXGBE_PCI_LINK_WIDTH) {
667 case IXGBE_PCI_LINK_WIDTH_1:
668 return ixgbe_bus_width_pcie_x1;
669 case IXGBE_PCI_LINK_WIDTH_2:
670 return ixgbe_bus_width_pcie_x2;
671 case IXGBE_PCI_LINK_WIDTH_4:
672 return ixgbe_bus_width_pcie_x4;
673 case IXGBE_PCI_LINK_WIDTH_8:
674 return ixgbe_bus_width_pcie_x8;
676 return ixgbe_bus_width_unknown;
680 enum ixgbe_bus_speed ixgbe_convert_bus_speed(u16 link_status)
682 switch (link_status & IXGBE_PCI_LINK_SPEED) {
683 case IXGBE_PCI_LINK_SPEED_2500:
684 return ixgbe_bus_speed_2500;
685 case IXGBE_PCI_LINK_SPEED_5000:
686 return ixgbe_bus_speed_5000;
687 case IXGBE_PCI_LINK_SPEED_8000:
688 return ixgbe_bus_speed_8000;
690 return ixgbe_bus_speed_unknown;
695 * ixgbe_get_bus_info_generic - Generic set PCI bus info
696 * @hw: pointer to hardware structure
698 * Sets the PCI bus info (speed, width, type) within the ixgbe_hw structure
700 s32 ixgbe_get_bus_info_generic(struct ixgbe_hw *hw)
704 hw->bus.type = ixgbe_bus_type_pci_express;
706 /* Get the negotiated link width and speed from PCI config space */
707 link_status = ixgbe_read_pci_cfg_word(hw, IXGBE_PCI_LINK_STATUS);
709 hw->bus.width = ixgbe_convert_bus_width(link_status);
710 hw->bus.speed = ixgbe_convert_bus_speed(link_status);
712 hw->mac.ops.set_lan_id(hw);
718 * ixgbe_set_lan_id_multi_port_pcie - Set LAN id for PCIe multiple port devices
719 * @hw: pointer to the HW structure
721 * Determines the LAN function id by reading memory-mapped registers
722 * and swaps the port value if requested.
724 void ixgbe_set_lan_id_multi_port_pcie(struct ixgbe_hw *hw)
726 struct ixgbe_bus_info *bus = &hw->bus;
730 reg = IXGBE_READ_REG(hw, IXGBE_STATUS);
731 bus->func = (reg & IXGBE_STATUS_LAN_ID) >> IXGBE_STATUS_LAN_ID_SHIFT;
732 bus->lan_id = bus->func;
734 /* check for a port swap */
735 reg = IXGBE_READ_REG(hw, IXGBE_FACTPS(hw));
736 if (reg & IXGBE_FACTPS_LFS)
739 /* Get MAC instance from EEPROM for configuring CS4227 */
740 if (hw->device_id == IXGBE_DEV_ID_X550EM_A_SFP) {
741 hw->eeprom.ops.read(hw, IXGBE_EEPROM_CTRL_4, &ee_ctrl_4);
742 bus->instance_id = (ee_ctrl_4 & IXGBE_EE_CTRL_4_INST_ID) >>
743 IXGBE_EE_CTRL_4_INST_ID_SHIFT;
748 * ixgbe_stop_adapter_generic - Generic stop Tx/Rx units
749 * @hw: pointer to hardware structure
751 * Sets the adapter_stopped flag within ixgbe_hw struct. Clears interrupts,
752 * disables transmit and receive units. The adapter_stopped flag is used by
753 * the shared code and drivers to determine if the adapter is in a stopped
754 * state and should not touch the hardware.
756 s32 ixgbe_stop_adapter_generic(struct ixgbe_hw *hw)
762 * Set the adapter_stopped flag so other driver functions stop touching
765 hw->adapter_stopped = true;
767 /* Disable the receive unit */
768 hw->mac.ops.disable_rx(hw);
770 /* Clear interrupt mask to stop interrupts from being generated */
771 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK);
773 /* Clear any pending interrupts, flush previous writes */
774 IXGBE_READ_REG(hw, IXGBE_EICR);
776 /* Disable the transmit unit. Each queue must be disabled. */
777 for (i = 0; i < hw->mac.max_tx_queues; i++)
778 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(i), IXGBE_TXDCTL_SWFLSH);
780 /* Disable the receive unit by stopping each queue */
781 for (i = 0; i < hw->mac.max_rx_queues; i++) {
782 reg_val = IXGBE_READ_REG(hw, IXGBE_RXDCTL(i));
783 reg_val &= ~IXGBE_RXDCTL_ENABLE;
784 reg_val |= IXGBE_RXDCTL_SWFLSH;
785 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(i), reg_val);
788 /* flush all queues disables */
789 IXGBE_WRITE_FLUSH(hw);
790 usleep_range(1000, 2000);
793 * Prevent the PCI-E bus from from hanging by disabling PCI-E master
794 * access and verify no pending requests
796 return ixgbe_disable_pcie_master(hw);
800 * ixgbe_init_led_link_act_generic - Store the LED index link/activity.
801 * @hw: pointer to hardware structure
803 * Store the index for the link active LED. This will be used to support
806 s32 ixgbe_init_led_link_act_generic(struct ixgbe_hw *hw)
808 struct ixgbe_mac_info *mac = &hw->mac;
809 u32 led_reg, led_mode;
812 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
814 /* Get LED link active from the LEDCTL register */
815 for (i = 0; i < 4; i++) {
816 led_mode = led_reg >> IXGBE_LED_MODE_SHIFT(i);
818 if ((led_mode & IXGBE_LED_MODE_MASK_BASE) ==
819 IXGBE_LED_LINK_ACTIVE) {
820 mac->led_link_act = i;
825 /* If LEDCTL register does not have the LED link active set, then use
826 * known MAC defaults.
828 switch (hw->mac.type) {
829 case ixgbe_mac_x550em_a:
830 mac->led_link_act = 0;
832 case ixgbe_mac_X550EM_x:
833 mac->led_link_act = 1;
836 mac->led_link_act = 2;
843 * ixgbe_led_on_generic - Turns on the software controllable LEDs.
844 * @hw: pointer to hardware structure
845 * @index: led number to turn on
847 s32 ixgbe_led_on_generic(struct ixgbe_hw *hw, u32 index)
849 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
852 return IXGBE_ERR_PARAM;
854 /* To turn on the LED, set mode to ON. */
855 led_reg &= ~IXGBE_LED_MODE_MASK(index);
856 led_reg |= IXGBE_LED_ON << IXGBE_LED_MODE_SHIFT(index);
857 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
858 IXGBE_WRITE_FLUSH(hw);
864 * ixgbe_led_off_generic - Turns off the software controllable LEDs.
865 * @hw: pointer to hardware structure
866 * @index: led number to turn off
868 s32 ixgbe_led_off_generic(struct ixgbe_hw *hw, u32 index)
870 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
873 return IXGBE_ERR_PARAM;
875 /* To turn off the LED, set mode to OFF. */
876 led_reg &= ~IXGBE_LED_MODE_MASK(index);
877 led_reg |= IXGBE_LED_OFF << IXGBE_LED_MODE_SHIFT(index);
878 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
879 IXGBE_WRITE_FLUSH(hw);
885 * ixgbe_init_eeprom_params_generic - Initialize EEPROM params
886 * @hw: pointer to hardware structure
888 * Initializes the EEPROM parameters ixgbe_eeprom_info within the
889 * ixgbe_hw struct in order to set up EEPROM access.
891 s32 ixgbe_init_eeprom_params_generic(struct ixgbe_hw *hw)
893 struct ixgbe_eeprom_info *eeprom = &hw->eeprom;
897 if (eeprom->type == ixgbe_eeprom_uninitialized) {
898 eeprom->type = ixgbe_eeprom_none;
899 /* Set default semaphore delay to 10ms which is a well
901 eeprom->semaphore_delay = 10;
902 /* Clear EEPROM page size, it will be initialized as needed */
903 eeprom->word_page_size = 0;
906 * Check for EEPROM present first.
907 * If not present leave as none
909 eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw));
910 if (eec & IXGBE_EEC_PRES) {
911 eeprom->type = ixgbe_eeprom_spi;
914 * SPI EEPROM is assumed here. This code would need to
915 * change if a future EEPROM is not SPI.
917 eeprom_size = (u16)((eec & IXGBE_EEC_SIZE) >>
918 IXGBE_EEC_SIZE_SHIFT);
919 eeprom->word_size = BIT(eeprom_size +
920 IXGBE_EEPROM_WORD_SIZE_SHIFT);
923 if (eec & IXGBE_EEC_ADDR_SIZE)
924 eeprom->address_bits = 16;
926 eeprom->address_bits = 8;
927 hw_dbg(hw, "Eeprom params: type = %d, size = %d, address bits: %d\n",
928 eeprom->type, eeprom->word_size, eeprom->address_bits);
935 * ixgbe_write_eeprom_buffer_bit_bang_generic - Write EEPROM using bit-bang
936 * @hw: pointer to hardware structure
937 * @offset: offset within the EEPROM to write
938 * @words: number of words
939 * @data: 16 bit word(s) to write to EEPROM
941 * Reads 16 bit word(s) from EEPROM through bit-bang method
943 s32 ixgbe_write_eeprom_buffer_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
944 u16 words, u16 *data)
949 hw->eeprom.ops.init_params(hw);
952 return IXGBE_ERR_INVALID_ARGUMENT;
954 if (offset + words > hw->eeprom.word_size)
955 return IXGBE_ERR_EEPROM;
958 * The EEPROM page size cannot be queried from the chip. We do lazy
959 * initialization. It is worth to do that when we write large buffer.
961 if ((hw->eeprom.word_page_size == 0) &&
962 (words > IXGBE_EEPROM_PAGE_SIZE_MAX))
963 ixgbe_detect_eeprom_page_size_generic(hw, offset);
966 * We cannot hold synchronization semaphores for too long
967 * to avoid other entity starvation. However it is more efficient
968 * to read in bursts than synchronizing access for each word.
970 for (i = 0; i < words; i += IXGBE_EEPROM_RD_BUFFER_MAX_COUNT) {
971 count = (words - i) / IXGBE_EEPROM_RD_BUFFER_MAX_COUNT > 0 ?
972 IXGBE_EEPROM_RD_BUFFER_MAX_COUNT : (words - i);
973 status = ixgbe_write_eeprom_buffer_bit_bang(hw, offset + i,
984 * ixgbe_write_eeprom_buffer_bit_bang - Writes 16 bit word(s) to EEPROM
985 * @hw: pointer to hardware structure
986 * @offset: offset within the EEPROM to be written to
987 * @words: number of word(s)
988 * @data: 16 bit word(s) to be written to the EEPROM
990 * If ixgbe_eeprom_update_checksum is not called after this function, the
991 * EEPROM will most likely contain an invalid checksum.
993 static s32 ixgbe_write_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset,
994 u16 words, u16 *data)
1000 u8 write_opcode = IXGBE_EEPROM_WRITE_OPCODE_SPI;
1002 /* Prepare the EEPROM for writing */
1003 status = ixgbe_acquire_eeprom(hw);
1007 if (ixgbe_ready_eeprom(hw) != 0) {
1008 ixgbe_release_eeprom(hw);
1009 return IXGBE_ERR_EEPROM;
1012 for (i = 0; i < words; i++) {
1013 ixgbe_standby_eeprom(hw);
1015 /* Send the WRITE ENABLE command (8 bit opcode) */
1016 ixgbe_shift_out_eeprom_bits(hw,
1017 IXGBE_EEPROM_WREN_OPCODE_SPI,
1018 IXGBE_EEPROM_OPCODE_BITS);
1020 ixgbe_standby_eeprom(hw);
1022 /* Some SPI eeproms use the 8th address bit embedded
1025 if ((hw->eeprom.address_bits == 8) &&
1026 ((offset + i) >= 128))
1027 write_opcode |= IXGBE_EEPROM_A8_OPCODE_SPI;
1029 /* Send the Write command (8-bit opcode + addr) */
1030 ixgbe_shift_out_eeprom_bits(hw, write_opcode,
1031 IXGBE_EEPROM_OPCODE_BITS);
1032 ixgbe_shift_out_eeprom_bits(hw, (u16)((offset + i) * 2),
1033 hw->eeprom.address_bits);
1035 page_size = hw->eeprom.word_page_size;
1037 /* Send the data in burst via SPI */
1040 word = (word >> 8) | (word << 8);
1041 ixgbe_shift_out_eeprom_bits(hw, word, 16);
1046 /* do not wrap around page */
1047 if (((offset + i) & (page_size - 1)) ==
1050 } while (++i < words);
1052 ixgbe_standby_eeprom(hw);
1053 usleep_range(10000, 20000);
1055 /* Done with writing - release the EEPROM */
1056 ixgbe_release_eeprom(hw);
1062 * ixgbe_write_eeprom_generic - Writes 16 bit value to EEPROM
1063 * @hw: pointer to hardware structure
1064 * @offset: offset within the EEPROM to be written to
1065 * @data: 16 bit word to be written to the EEPROM
1067 * If ixgbe_eeprom_update_checksum is not called after this function, the
1068 * EEPROM will most likely contain an invalid checksum.
1070 s32 ixgbe_write_eeprom_generic(struct ixgbe_hw *hw, u16 offset, u16 data)
1072 hw->eeprom.ops.init_params(hw);
1074 if (offset >= hw->eeprom.word_size)
1075 return IXGBE_ERR_EEPROM;
1077 return ixgbe_write_eeprom_buffer_bit_bang(hw, offset, 1, &data);
1081 * ixgbe_read_eeprom_buffer_bit_bang_generic - Read EEPROM using bit-bang
1082 * @hw: pointer to hardware structure
1083 * @offset: offset within the EEPROM to be read
1084 * @words: number of word(s)
1085 * @data: read 16 bit words(s) from EEPROM
1087 * Reads 16 bit word(s) from EEPROM through bit-bang method
1089 s32 ixgbe_read_eeprom_buffer_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
1090 u16 words, u16 *data)
1095 hw->eeprom.ops.init_params(hw);
1098 return IXGBE_ERR_INVALID_ARGUMENT;
1100 if (offset + words > hw->eeprom.word_size)
1101 return IXGBE_ERR_EEPROM;
1104 * We cannot hold synchronization semaphores for too long
1105 * to avoid other entity starvation. However it is more efficient
1106 * to read in bursts than synchronizing access for each word.
1108 for (i = 0; i < words; i += IXGBE_EEPROM_RD_BUFFER_MAX_COUNT) {
1109 count = (words - i) / IXGBE_EEPROM_RD_BUFFER_MAX_COUNT > 0 ?
1110 IXGBE_EEPROM_RD_BUFFER_MAX_COUNT : (words - i);
1112 status = ixgbe_read_eeprom_buffer_bit_bang(hw, offset + i,
1123 * ixgbe_read_eeprom_buffer_bit_bang - Read EEPROM using bit-bang
1124 * @hw: pointer to hardware structure
1125 * @offset: offset within the EEPROM to be read
1126 * @words: number of word(s)
1127 * @data: read 16 bit word(s) from EEPROM
1129 * Reads 16 bit word(s) from EEPROM through bit-bang method
1131 static s32 ixgbe_read_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset,
1132 u16 words, u16 *data)
1136 u8 read_opcode = IXGBE_EEPROM_READ_OPCODE_SPI;
1139 /* Prepare the EEPROM for reading */
1140 status = ixgbe_acquire_eeprom(hw);
1144 if (ixgbe_ready_eeprom(hw) != 0) {
1145 ixgbe_release_eeprom(hw);
1146 return IXGBE_ERR_EEPROM;
1149 for (i = 0; i < words; i++) {
1150 ixgbe_standby_eeprom(hw);
1151 /* Some SPI eeproms use the 8th address bit embedded
1154 if ((hw->eeprom.address_bits == 8) &&
1155 ((offset + i) >= 128))
1156 read_opcode |= IXGBE_EEPROM_A8_OPCODE_SPI;
1158 /* Send the READ command (opcode + addr) */
1159 ixgbe_shift_out_eeprom_bits(hw, read_opcode,
1160 IXGBE_EEPROM_OPCODE_BITS);
1161 ixgbe_shift_out_eeprom_bits(hw, (u16)((offset + i) * 2),
1162 hw->eeprom.address_bits);
1164 /* Read the data. */
1165 word_in = ixgbe_shift_in_eeprom_bits(hw, 16);
1166 data[i] = (word_in >> 8) | (word_in << 8);
1169 /* End this read operation */
1170 ixgbe_release_eeprom(hw);
1176 * ixgbe_read_eeprom_bit_bang_generic - Read EEPROM word using bit-bang
1177 * @hw: pointer to hardware structure
1178 * @offset: offset within the EEPROM to be read
1179 * @data: read 16 bit value from EEPROM
1181 * Reads 16 bit value from EEPROM through bit-bang method
1183 s32 ixgbe_read_eeprom_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
1186 hw->eeprom.ops.init_params(hw);
1188 if (offset >= hw->eeprom.word_size)
1189 return IXGBE_ERR_EEPROM;
1191 return ixgbe_read_eeprom_buffer_bit_bang(hw, offset, 1, data);
1195 * ixgbe_read_eerd_buffer_generic - Read EEPROM word(s) using EERD
1196 * @hw: pointer to hardware structure
1197 * @offset: offset of word in the EEPROM to read
1198 * @words: number of word(s)
1199 * @data: 16 bit word(s) from the EEPROM
1201 * Reads a 16 bit word(s) from the EEPROM using the EERD register.
1203 s32 ixgbe_read_eerd_buffer_generic(struct ixgbe_hw *hw, u16 offset,
1204 u16 words, u16 *data)
1210 hw->eeprom.ops.init_params(hw);
1213 return IXGBE_ERR_INVALID_ARGUMENT;
1215 if (offset >= hw->eeprom.word_size)
1216 return IXGBE_ERR_EEPROM;
1218 for (i = 0; i < words; i++) {
1219 eerd = ((offset + i) << IXGBE_EEPROM_RW_ADDR_SHIFT) |
1220 IXGBE_EEPROM_RW_REG_START;
1222 IXGBE_WRITE_REG(hw, IXGBE_EERD, eerd);
1223 status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_READ);
1226 data[i] = (IXGBE_READ_REG(hw, IXGBE_EERD) >>
1227 IXGBE_EEPROM_RW_REG_DATA);
1229 hw_dbg(hw, "Eeprom read timed out\n");
1238 * ixgbe_detect_eeprom_page_size_generic - Detect EEPROM page size
1239 * @hw: pointer to hardware structure
1240 * @offset: offset within the EEPROM to be used as a scratch pad
1242 * Discover EEPROM page size by writing marching data at given offset.
1243 * This function is called only when we are writing a new large buffer
1244 * at given offset so the data would be overwritten anyway.
1246 static s32 ixgbe_detect_eeprom_page_size_generic(struct ixgbe_hw *hw,
1249 u16 data[IXGBE_EEPROM_PAGE_SIZE_MAX];
1253 for (i = 0; i < IXGBE_EEPROM_PAGE_SIZE_MAX; i++)
1256 hw->eeprom.word_page_size = IXGBE_EEPROM_PAGE_SIZE_MAX;
1257 status = ixgbe_write_eeprom_buffer_bit_bang(hw, offset,
1258 IXGBE_EEPROM_PAGE_SIZE_MAX, data);
1259 hw->eeprom.word_page_size = 0;
1263 status = ixgbe_read_eeprom_buffer_bit_bang(hw, offset, 1, data);
1268 * When writing in burst more than the actual page size
1269 * EEPROM address wraps around current page.
1271 hw->eeprom.word_page_size = IXGBE_EEPROM_PAGE_SIZE_MAX - data[0];
1273 hw_dbg(hw, "Detected EEPROM page size = %d words.\n",
1274 hw->eeprom.word_page_size);
1279 * ixgbe_read_eerd_generic - Read EEPROM word using EERD
1280 * @hw: pointer to hardware structure
1281 * @offset: offset of word in the EEPROM to read
1282 * @data: word read from the EEPROM
1284 * Reads a 16 bit word from the EEPROM using the EERD register.
1286 s32 ixgbe_read_eerd_generic(struct ixgbe_hw *hw, u16 offset, u16 *data)
1288 return ixgbe_read_eerd_buffer_generic(hw, offset, 1, data);
1292 * ixgbe_write_eewr_buffer_generic - Write EEPROM word(s) using EEWR
1293 * @hw: pointer to hardware structure
1294 * @offset: offset of word in the EEPROM to write
1295 * @words: number of words
1296 * @data: word(s) write to the EEPROM
1298 * Write a 16 bit word(s) to the EEPROM using the EEWR register.
1300 s32 ixgbe_write_eewr_buffer_generic(struct ixgbe_hw *hw, u16 offset,
1301 u16 words, u16 *data)
1307 hw->eeprom.ops.init_params(hw);
1310 return IXGBE_ERR_INVALID_ARGUMENT;
1312 if (offset >= hw->eeprom.word_size)
1313 return IXGBE_ERR_EEPROM;
1315 for (i = 0; i < words; i++) {
1316 eewr = ((offset + i) << IXGBE_EEPROM_RW_ADDR_SHIFT) |
1317 (data[i] << IXGBE_EEPROM_RW_REG_DATA) |
1318 IXGBE_EEPROM_RW_REG_START;
1320 status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_WRITE);
1322 hw_dbg(hw, "Eeprom write EEWR timed out\n");
1326 IXGBE_WRITE_REG(hw, IXGBE_EEWR, eewr);
1328 status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_WRITE);
1330 hw_dbg(hw, "Eeprom write EEWR timed out\n");
1339 * ixgbe_write_eewr_generic - Write EEPROM word using EEWR
1340 * @hw: pointer to hardware structure
1341 * @offset: offset of word in the EEPROM to write
1342 * @data: word write to the EEPROM
1344 * Write a 16 bit word to the EEPROM using the EEWR register.
1346 s32 ixgbe_write_eewr_generic(struct ixgbe_hw *hw, u16 offset, u16 data)
1348 return ixgbe_write_eewr_buffer_generic(hw, offset, 1, &data);
1352 * ixgbe_poll_eerd_eewr_done - Poll EERD read or EEWR write status
1353 * @hw: pointer to hardware structure
1354 * @ee_reg: EEPROM flag for polling
1356 * Polls the status bit (bit 1) of the EERD or EEWR to determine when the
1357 * read or write is done respectively.
1359 static s32 ixgbe_poll_eerd_eewr_done(struct ixgbe_hw *hw, u32 ee_reg)
1364 for (i = 0; i < IXGBE_EERD_EEWR_ATTEMPTS; i++) {
1365 if (ee_reg == IXGBE_NVM_POLL_READ)
1366 reg = IXGBE_READ_REG(hw, IXGBE_EERD);
1368 reg = IXGBE_READ_REG(hw, IXGBE_EEWR);
1370 if (reg & IXGBE_EEPROM_RW_REG_DONE) {
1375 return IXGBE_ERR_EEPROM;
1379 * ixgbe_acquire_eeprom - Acquire EEPROM using bit-bang
1380 * @hw: pointer to hardware structure
1382 * Prepares EEPROM for access using bit-bang method. This function should
1383 * be called before issuing a command to the EEPROM.
1385 static s32 ixgbe_acquire_eeprom(struct ixgbe_hw *hw)
1390 if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) != 0)
1391 return IXGBE_ERR_SWFW_SYNC;
1393 eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw));
1395 /* Request EEPROM Access */
1396 eec |= IXGBE_EEC_REQ;
1397 IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), eec);
1399 for (i = 0; i < IXGBE_EEPROM_GRANT_ATTEMPTS; i++) {
1400 eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw));
1401 if (eec & IXGBE_EEC_GNT)
1406 /* Release if grant not acquired */
1407 if (!(eec & IXGBE_EEC_GNT)) {
1408 eec &= ~IXGBE_EEC_REQ;
1409 IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), eec);
1410 hw_dbg(hw, "Could not acquire EEPROM grant\n");
1412 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
1413 return IXGBE_ERR_EEPROM;
1416 /* Setup EEPROM for Read/Write */
1417 /* Clear CS and SK */
1418 eec &= ~(IXGBE_EEC_CS | IXGBE_EEC_SK);
1419 IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), eec);
1420 IXGBE_WRITE_FLUSH(hw);
1426 * ixgbe_get_eeprom_semaphore - Get hardware semaphore
1427 * @hw: pointer to hardware structure
1429 * Sets the hardware semaphores so EEPROM access can occur for bit-bang method
1431 static s32 ixgbe_get_eeprom_semaphore(struct ixgbe_hw *hw)
1437 /* Get SMBI software semaphore between device drivers first */
1438 for (i = 0; i < timeout; i++) {
1440 * If the SMBI bit is 0 when we read it, then the bit will be
1441 * set and we have the semaphore
1443 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM(hw));
1444 if (!(swsm & IXGBE_SWSM_SMBI))
1446 usleep_range(50, 100);
1450 hw_dbg(hw, "Driver can't access the Eeprom - SMBI Semaphore not granted.\n");
1451 /* this release is particularly important because our attempts
1452 * above to get the semaphore may have succeeded, and if there
1453 * was a timeout, we should unconditionally clear the semaphore
1454 * bits to free the driver to make progress
1456 ixgbe_release_eeprom_semaphore(hw);
1458 usleep_range(50, 100);
1460 * If the SMBI bit is 0 when we read it, then the bit will be
1461 * set and we have the semaphore
1463 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM(hw));
1464 if (swsm & IXGBE_SWSM_SMBI) {
1465 hw_dbg(hw, "Software semaphore SMBI between device drivers not granted.\n");
1466 return IXGBE_ERR_EEPROM;
1470 /* Now get the semaphore between SW/FW through the SWESMBI bit */
1471 for (i = 0; i < timeout; i++) {
1472 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM(hw));
1474 /* Set the SW EEPROM semaphore bit to request access */
1475 swsm |= IXGBE_SWSM_SWESMBI;
1476 IXGBE_WRITE_REG(hw, IXGBE_SWSM(hw), swsm);
1478 /* If we set the bit successfully then we got the
1481 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM(hw));
1482 if (swsm & IXGBE_SWSM_SWESMBI)
1485 usleep_range(50, 100);
1488 /* Release semaphores and return error if SW EEPROM semaphore
1489 * was not granted because we don't have access to the EEPROM
1492 hw_dbg(hw, "SWESMBI Software EEPROM semaphore not granted.\n");
1493 ixgbe_release_eeprom_semaphore(hw);
1494 return IXGBE_ERR_EEPROM;
1501 * ixgbe_release_eeprom_semaphore - Release hardware semaphore
1502 * @hw: pointer to hardware structure
1504 * This function clears hardware semaphore bits.
1506 static void ixgbe_release_eeprom_semaphore(struct ixgbe_hw *hw)
1510 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM(hw));
1512 /* Release both semaphores by writing 0 to the bits SWESMBI and SMBI */
1513 swsm &= ~(IXGBE_SWSM_SWESMBI | IXGBE_SWSM_SMBI);
1514 IXGBE_WRITE_REG(hw, IXGBE_SWSM(hw), swsm);
1515 IXGBE_WRITE_FLUSH(hw);
1519 * ixgbe_ready_eeprom - Polls for EEPROM ready
1520 * @hw: pointer to hardware structure
1522 static s32 ixgbe_ready_eeprom(struct ixgbe_hw *hw)
1528 * Read "Status Register" repeatedly until the LSB is cleared. The
1529 * EEPROM will signal that the command has been completed by clearing
1530 * bit 0 of the internal status register. If it's not cleared within
1531 * 5 milliseconds, then error out.
1533 for (i = 0; i < IXGBE_EEPROM_MAX_RETRY_SPI; i += 5) {
1534 ixgbe_shift_out_eeprom_bits(hw, IXGBE_EEPROM_RDSR_OPCODE_SPI,
1535 IXGBE_EEPROM_OPCODE_BITS);
1536 spi_stat_reg = (u8)ixgbe_shift_in_eeprom_bits(hw, 8);
1537 if (!(spi_stat_reg & IXGBE_EEPROM_STATUS_RDY_SPI))
1541 ixgbe_standby_eeprom(hw);
1545 * On some parts, SPI write time could vary from 0-20mSec on 3.3V
1546 * devices (and only 0-5mSec on 5V devices)
1548 if (i >= IXGBE_EEPROM_MAX_RETRY_SPI) {
1549 hw_dbg(hw, "SPI EEPROM Status error\n");
1550 return IXGBE_ERR_EEPROM;
1557 * ixgbe_standby_eeprom - Returns EEPROM to a "standby" state
1558 * @hw: pointer to hardware structure
1560 static void ixgbe_standby_eeprom(struct ixgbe_hw *hw)
1564 eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw));
1566 /* Toggle CS to flush commands */
1567 eec |= IXGBE_EEC_CS;
1568 IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), eec);
1569 IXGBE_WRITE_FLUSH(hw);
1571 eec &= ~IXGBE_EEC_CS;
1572 IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), eec);
1573 IXGBE_WRITE_FLUSH(hw);
1578 * ixgbe_shift_out_eeprom_bits - Shift data bits out to the EEPROM.
1579 * @hw: pointer to hardware structure
1580 * @data: data to send to the EEPROM
1581 * @count: number of bits to shift out
1583 static void ixgbe_shift_out_eeprom_bits(struct ixgbe_hw *hw, u16 data,
1590 eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw));
1593 * Mask is used to shift "count" bits of "data" out to the EEPROM
1594 * one bit at a time. Determine the starting bit based on count
1596 mask = BIT(count - 1);
1598 for (i = 0; i < count; i++) {
1600 * A "1" is shifted out to the EEPROM by setting bit "DI" to a
1601 * "1", and then raising and then lowering the clock (the SK
1602 * bit controls the clock input to the EEPROM). A "0" is
1603 * shifted out to the EEPROM by setting "DI" to "0" and then
1604 * raising and then lowering the clock.
1607 eec |= IXGBE_EEC_DI;
1609 eec &= ~IXGBE_EEC_DI;
1611 IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), eec);
1612 IXGBE_WRITE_FLUSH(hw);
1616 ixgbe_raise_eeprom_clk(hw, &eec);
1617 ixgbe_lower_eeprom_clk(hw, &eec);
1620 * Shift mask to signify next bit of data to shift in to the
1626 /* We leave the "DI" bit set to "0" when we leave this routine. */
1627 eec &= ~IXGBE_EEC_DI;
1628 IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), eec);
1629 IXGBE_WRITE_FLUSH(hw);
1633 * ixgbe_shift_in_eeprom_bits - Shift data bits in from the EEPROM
1634 * @hw: pointer to hardware structure
1636 static u16 ixgbe_shift_in_eeprom_bits(struct ixgbe_hw *hw, u16 count)
1643 * In order to read a register from the EEPROM, we need to shift
1644 * 'count' bits in from the EEPROM. Bits are "shifted in" by raising
1645 * the clock input to the EEPROM (setting the SK bit), and then reading
1646 * the value of the "DO" bit. During this "shifting in" process the
1647 * "DI" bit should always be clear.
1649 eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw));
1651 eec &= ~(IXGBE_EEC_DO | IXGBE_EEC_DI);
1653 for (i = 0; i < count; i++) {
1655 ixgbe_raise_eeprom_clk(hw, &eec);
1657 eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw));
1659 eec &= ~(IXGBE_EEC_DI);
1660 if (eec & IXGBE_EEC_DO)
1663 ixgbe_lower_eeprom_clk(hw, &eec);
1670 * ixgbe_raise_eeprom_clk - Raises the EEPROM's clock input.
1671 * @hw: pointer to hardware structure
1672 * @eec: EEC register's current value
1674 static void ixgbe_raise_eeprom_clk(struct ixgbe_hw *hw, u32 *eec)
1677 * Raise the clock input to the EEPROM
1678 * (setting the SK bit), then delay
1680 *eec = *eec | IXGBE_EEC_SK;
1681 IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), *eec);
1682 IXGBE_WRITE_FLUSH(hw);
1687 * ixgbe_lower_eeprom_clk - Lowers the EEPROM's clock input.
1688 * @hw: pointer to hardware structure
1689 * @eecd: EECD's current value
1691 static void ixgbe_lower_eeprom_clk(struct ixgbe_hw *hw, u32 *eec)
1694 * Lower the clock input to the EEPROM (clearing the SK bit), then
1697 *eec = *eec & ~IXGBE_EEC_SK;
1698 IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), *eec);
1699 IXGBE_WRITE_FLUSH(hw);
1704 * ixgbe_release_eeprom - Release EEPROM, release semaphores
1705 * @hw: pointer to hardware structure
1707 static void ixgbe_release_eeprom(struct ixgbe_hw *hw)
1711 eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw));
1713 eec |= IXGBE_EEC_CS; /* Pull CS high */
1714 eec &= ~IXGBE_EEC_SK; /* Lower SCK */
1716 IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), eec);
1717 IXGBE_WRITE_FLUSH(hw);
1721 /* Stop requesting EEPROM access */
1722 eec &= ~IXGBE_EEC_REQ;
1723 IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), eec);
1725 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
1728 * Delay before attempt to obtain semaphore again to allow FW
1729 * access. semaphore_delay is in ms we need us for usleep_range
1731 usleep_range(hw->eeprom.semaphore_delay * 1000,
1732 hw->eeprom.semaphore_delay * 2000);
1736 * ixgbe_calc_eeprom_checksum_generic - Calculates and returns the checksum
1737 * @hw: pointer to hardware structure
1739 s32 ixgbe_calc_eeprom_checksum_generic(struct ixgbe_hw *hw)
1748 /* Include 0x0-0x3F in the checksum */
1749 for (i = 0; i < IXGBE_EEPROM_CHECKSUM; i++) {
1750 if (hw->eeprom.ops.read(hw, i, &word)) {
1751 hw_dbg(hw, "EEPROM read failed\n");
1757 /* Include all data from pointers except for the fw pointer */
1758 for (i = IXGBE_PCIE_ANALOG_PTR; i < IXGBE_FW_PTR; i++) {
1759 if (hw->eeprom.ops.read(hw, i, &pointer)) {
1760 hw_dbg(hw, "EEPROM read failed\n");
1761 return IXGBE_ERR_EEPROM;
1764 /* If the pointer seems invalid */
1765 if (pointer == 0xFFFF || pointer == 0)
1768 if (hw->eeprom.ops.read(hw, pointer, &length)) {
1769 hw_dbg(hw, "EEPROM read failed\n");
1770 return IXGBE_ERR_EEPROM;
1773 if (length == 0xFFFF || length == 0)
1776 for (j = pointer + 1; j <= pointer + length; j++) {
1777 if (hw->eeprom.ops.read(hw, j, &word)) {
1778 hw_dbg(hw, "EEPROM read failed\n");
1779 return IXGBE_ERR_EEPROM;
1785 checksum = (u16)IXGBE_EEPROM_SUM - checksum;
1787 return (s32)checksum;
1791 * ixgbe_validate_eeprom_checksum_generic - Validate EEPROM checksum
1792 * @hw: pointer to hardware structure
1793 * @checksum_val: calculated checksum
1795 * Performs checksum calculation and validates the EEPROM checksum. If the
1796 * caller does not need checksum_val, the value can be NULL.
1798 s32 ixgbe_validate_eeprom_checksum_generic(struct ixgbe_hw *hw,
1803 u16 read_checksum = 0;
1806 * Read the first word from the EEPROM. If this times out or fails, do
1807 * not continue or we could be in for a very long wait while every
1810 status = hw->eeprom.ops.read(hw, 0, &checksum);
1812 hw_dbg(hw, "EEPROM read failed\n");
1816 status = hw->eeprom.ops.calc_checksum(hw);
1820 checksum = (u16)(status & 0xffff);
1822 status = hw->eeprom.ops.read(hw, IXGBE_EEPROM_CHECKSUM, &read_checksum);
1824 hw_dbg(hw, "EEPROM read failed\n");
1828 /* Verify read checksum from EEPROM is the same as
1829 * calculated checksum
1831 if (read_checksum != checksum)
1832 status = IXGBE_ERR_EEPROM_CHECKSUM;
1834 /* If the user cares, return the calculated checksum */
1836 *checksum_val = checksum;
1842 * ixgbe_update_eeprom_checksum_generic - Updates the EEPROM checksum
1843 * @hw: pointer to hardware structure
1845 s32 ixgbe_update_eeprom_checksum_generic(struct ixgbe_hw *hw)
1851 * Read the first word from the EEPROM. If this times out or fails, do
1852 * not continue or we could be in for a very long wait while every
1855 status = hw->eeprom.ops.read(hw, 0, &checksum);
1857 hw_dbg(hw, "EEPROM read failed\n");
1861 status = hw->eeprom.ops.calc_checksum(hw);
1865 checksum = (u16)(status & 0xffff);
1867 status = hw->eeprom.ops.write(hw, IXGBE_EEPROM_CHECKSUM, checksum);
1873 * ixgbe_set_rar_generic - Set Rx address register
1874 * @hw: pointer to hardware structure
1875 * @index: Receive address register to write
1876 * @addr: Address to put into receive address register
1877 * @vmdq: VMDq "set" or "pool" index
1878 * @enable_addr: set flag that address is active
1880 * Puts an ethernet address into a receive address register.
1882 s32 ixgbe_set_rar_generic(struct ixgbe_hw *hw, u32 index, u8 *addr, u32 vmdq,
1885 u32 rar_low, rar_high;
1886 u32 rar_entries = hw->mac.num_rar_entries;
1888 /* Make sure we are using a valid rar index range */
1889 if (index >= rar_entries) {
1890 hw_dbg(hw, "RAR index %d is out of range.\n", index);
1891 return IXGBE_ERR_INVALID_ARGUMENT;
1894 /* setup VMDq pool selection before this RAR gets enabled */
1895 hw->mac.ops.set_vmdq(hw, index, vmdq);
1898 * HW expects these in little endian so we reverse the byte
1899 * order from network order (big endian) to little endian
1901 rar_low = ((u32)addr[0] |
1902 ((u32)addr[1] << 8) |
1903 ((u32)addr[2] << 16) |
1904 ((u32)addr[3] << 24));
1906 * Some parts put the VMDq setting in the extra RAH bits,
1907 * so save everything except the lower 16 bits that hold part
1908 * of the address and the address valid bit.
1910 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index));
1911 rar_high &= ~(0x0000FFFF | IXGBE_RAH_AV);
1912 rar_high |= ((u32)addr[4] | ((u32)addr[5] << 8));
1914 if (enable_addr != 0)
1915 rar_high |= IXGBE_RAH_AV;
1917 IXGBE_WRITE_REG(hw, IXGBE_RAL(index), rar_low);
1918 IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high);
1924 * ixgbe_clear_rar_generic - Remove Rx address register
1925 * @hw: pointer to hardware structure
1926 * @index: Receive address register to write
1928 * Clears an ethernet address from a receive address register.
1930 s32 ixgbe_clear_rar_generic(struct ixgbe_hw *hw, u32 index)
1933 u32 rar_entries = hw->mac.num_rar_entries;
1935 /* Make sure we are using a valid rar index range */
1936 if (index >= rar_entries) {
1937 hw_dbg(hw, "RAR index %d is out of range.\n", index);
1938 return IXGBE_ERR_INVALID_ARGUMENT;
1942 * Some parts put the VMDq setting in the extra RAH bits,
1943 * so save everything except the lower 16 bits that hold part
1944 * of the address and the address valid bit.
1946 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index));
1947 rar_high &= ~(0x0000FFFF | IXGBE_RAH_AV);
1949 IXGBE_WRITE_REG(hw, IXGBE_RAL(index), 0);
1950 IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high);
1952 /* clear VMDq pool/queue selection for this RAR */
1953 hw->mac.ops.clear_vmdq(hw, index, IXGBE_CLEAR_VMDQ_ALL);
1959 * ixgbe_init_rx_addrs_generic - Initializes receive address filters.
1960 * @hw: pointer to hardware structure
1962 * Places the MAC address in receive address register 0 and clears the rest
1963 * of the receive address registers. Clears the multicast table. Assumes
1964 * the receiver is in reset when the routine is called.
1966 s32 ixgbe_init_rx_addrs_generic(struct ixgbe_hw *hw)
1969 u32 rar_entries = hw->mac.num_rar_entries;
1972 * If the current mac address is valid, assume it is a software override
1973 * to the permanent address.
1974 * Otherwise, use the permanent address from the eeprom.
1976 if (!is_valid_ether_addr(hw->mac.addr)) {
1977 /* Get the MAC address from the RAR0 for later reference */
1978 hw->mac.ops.get_mac_addr(hw, hw->mac.addr);
1980 hw_dbg(hw, " Keeping Current RAR0 Addr =%pM\n", hw->mac.addr);
1982 /* Setup the receive address. */
1983 hw_dbg(hw, "Overriding MAC Address in RAR[0]\n");
1984 hw_dbg(hw, " New MAC Addr =%pM\n", hw->mac.addr);
1986 hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0, IXGBE_RAH_AV);
1989 /* clear VMDq pool/queue selection for RAR 0 */
1990 hw->mac.ops.clear_vmdq(hw, 0, IXGBE_CLEAR_VMDQ_ALL);
1992 hw->addr_ctrl.overflow_promisc = 0;
1994 hw->addr_ctrl.rar_used_count = 1;
1996 /* Zero out the other receive addresses. */
1997 hw_dbg(hw, "Clearing RAR[1-%d]\n", rar_entries - 1);
1998 for (i = 1; i < rar_entries; i++) {
1999 IXGBE_WRITE_REG(hw, IXGBE_RAL(i), 0);
2000 IXGBE_WRITE_REG(hw, IXGBE_RAH(i), 0);
2004 hw->addr_ctrl.mta_in_use = 0;
2005 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, hw->mac.mc_filter_type);
2007 hw_dbg(hw, " Clearing MTA\n");
2008 for (i = 0; i < hw->mac.mcft_size; i++)
2009 IXGBE_WRITE_REG(hw, IXGBE_MTA(i), 0);
2011 if (hw->mac.ops.init_uta_tables)
2012 hw->mac.ops.init_uta_tables(hw);
2018 * ixgbe_mta_vector - Determines bit-vector in multicast table to set
2019 * @hw: pointer to hardware structure
2020 * @mc_addr: the multicast address
2022 * Extracts the 12 bits, from a multicast address, to determine which
2023 * bit-vector to set in the multicast table. The hardware uses 12 bits, from
2024 * incoming rx multicast addresses, to determine the bit-vector to check in
2025 * the MTA. Which of the 4 combination, of 12-bits, the hardware uses is set
2026 * by the MO field of the MCSTCTRL. The MO field is set during initialization
2027 * to mc_filter_type.
2029 static s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr)
2033 switch (hw->mac.mc_filter_type) {
2034 case 0: /* use bits [47:36] of the address */
2035 vector = ((mc_addr[4] >> 4) | (((u16)mc_addr[5]) << 4));
2037 case 1: /* use bits [46:35] of the address */
2038 vector = ((mc_addr[4] >> 3) | (((u16)mc_addr[5]) << 5));
2040 case 2: /* use bits [45:34] of the address */
2041 vector = ((mc_addr[4] >> 2) | (((u16)mc_addr[5]) << 6));
2043 case 3: /* use bits [43:32] of the address */
2044 vector = ((mc_addr[4]) | (((u16)mc_addr[5]) << 8));
2046 default: /* Invalid mc_filter_type */
2047 hw_dbg(hw, "MC filter type param set incorrectly\n");
2051 /* vector can only be 12-bits or boundary will be exceeded */
2057 * ixgbe_set_mta - Set bit-vector in multicast table
2058 * @hw: pointer to hardware structure
2059 * @hash_value: Multicast address hash value
2061 * Sets the bit-vector in the multicast table.
2063 static void ixgbe_set_mta(struct ixgbe_hw *hw, u8 *mc_addr)
2069 hw->addr_ctrl.mta_in_use++;
2071 vector = ixgbe_mta_vector(hw, mc_addr);
2072 hw_dbg(hw, " bit-vector = 0x%03X\n", vector);
2075 * The MTA is a register array of 128 32-bit registers. It is treated
2076 * like an array of 4096 bits. We want to set bit
2077 * BitArray[vector_value]. So we figure out what register the bit is
2078 * in, read it, OR in the new bit, then write back the new value. The
2079 * register is determined by the upper 7 bits of the vector value and
2080 * the bit within that register are determined by the lower 5 bits of
2083 vector_reg = (vector >> 5) & 0x7F;
2084 vector_bit = vector & 0x1F;
2085 hw->mac.mta_shadow[vector_reg] |= BIT(vector_bit);
2089 * ixgbe_update_mc_addr_list_generic - Updates MAC list of multicast addresses
2090 * @hw: pointer to hardware structure
2091 * @netdev: pointer to net device structure
2093 * The given list replaces any existing list. Clears the MC addrs from receive
2094 * address registers and the multicast table. Uses unused receive address
2095 * registers for the first multicast addresses, and hashes the rest into the
2098 s32 ixgbe_update_mc_addr_list_generic(struct ixgbe_hw *hw,
2099 struct net_device *netdev)
2101 struct netdev_hw_addr *ha;
2105 * Set the new number of MC addresses that we are being requested to
2108 hw->addr_ctrl.num_mc_addrs = netdev_mc_count(netdev);
2109 hw->addr_ctrl.mta_in_use = 0;
2111 /* Clear mta_shadow */
2112 hw_dbg(hw, " Clearing MTA\n");
2113 memset(&hw->mac.mta_shadow, 0, sizeof(hw->mac.mta_shadow));
2115 /* Update mta shadow */
2116 netdev_for_each_mc_addr(ha, netdev) {
2117 hw_dbg(hw, " Adding the multicast addresses:\n");
2118 ixgbe_set_mta(hw, ha->addr);
2122 for (i = 0; i < hw->mac.mcft_size; i++)
2123 IXGBE_WRITE_REG_ARRAY(hw, IXGBE_MTA(0), i,
2124 hw->mac.mta_shadow[i]);
2126 if (hw->addr_ctrl.mta_in_use > 0)
2127 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL,
2128 IXGBE_MCSTCTRL_MFE | hw->mac.mc_filter_type);
2130 hw_dbg(hw, "ixgbe_update_mc_addr_list_generic Complete\n");
2135 * ixgbe_enable_mc_generic - Enable multicast address in RAR
2136 * @hw: pointer to hardware structure
2138 * Enables multicast address in RAR and the use of the multicast hash table.
2140 s32 ixgbe_enable_mc_generic(struct ixgbe_hw *hw)
2142 struct ixgbe_addr_filter_info *a = &hw->addr_ctrl;
2144 if (a->mta_in_use > 0)
2145 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, IXGBE_MCSTCTRL_MFE |
2146 hw->mac.mc_filter_type);
2152 * ixgbe_disable_mc_generic - Disable multicast address in RAR
2153 * @hw: pointer to hardware structure
2155 * Disables multicast address in RAR and the use of the multicast hash table.
2157 s32 ixgbe_disable_mc_generic(struct ixgbe_hw *hw)
2159 struct ixgbe_addr_filter_info *a = &hw->addr_ctrl;
2161 if (a->mta_in_use > 0)
2162 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, hw->mac.mc_filter_type);
2168 * ixgbe_fc_enable_generic - Enable flow control
2169 * @hw: pointer to hardware structure
2171 * Enable flow control according to the current settings.
2173 s32 ixgbe_fc_enable_generic(struct ixgbe_hw *hw)
2175 u32 mflcn_reg, fccfg_reg;
2180 /* Validate the water mark configuration. */
2181 if (!hw->fc.pause_time)
2182 return IXGBE_ERR_INVALID_LINK_SETTINGS;
2184 /* Low water mark of zero causes XOFF floods */
2185 for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
2186 if ((hw->fc.current_mode & ixgbe_fc_tx_pause) &&
2187 hw->fc.high_water[i]) {
2188 if (!hw->fc.low_water[i] ||
2189 hw->fc.low_water[i] >= hw->fc.high_water[i]) {
2190 hw_dbg(hw, "Invalid water mark configuration\n");
2191 return IXGBE_ERR_INVALID_LINK_SETTINGS;
2196 /* Negotiate the fc mode to use */
2197 hw->mac.ops.fc_autoneg(hw);
2199 /* Disable any previous flow control settings */
2200 mflcn_reg = IXGBE_READ_REG(hw, IXGBE_MFLCN);
2201 mflcn_reg &= ~(IXGBE_MFLCN_RPFCE_MASK | IXGBE_MFLCN_RFCE);
2203 fccfg_reg = IXGBE_READ_REG(hw, IXGBE_FCCFG);
2204 fccfg_reg &= ~(IXGBE_FCCFG_TFCE_802_3X | IXGBE_FCCFG_TFCE_PRIORITY);
2207 * The possible values of fc.current_mode are:
2208 * 0: Flow control is completely disabled
2209 * 1: Rx flow control is enabled (we can receive pause frames,
2210 * but not send pause frames).
2211 * 2: Tx flow control is enabled (we can send pause frames but
2212 * we do not support receiving pause frames).
2213 * 3: Both Rx and Tx flow control (symmetric) are enabled.
2216 switch (hw->fc.current_mode) {
2219 * Flow control is disabled by software override or autoneg.
2220 * The code below will actually disable it in the HW.
2223 case ixgbe_fc_rx_pause:
2225 * Rx Flow control is enabled and Tx Flow control is
2226 * disabled by software override. Since there really
2227 * isn't a way to advertise that we are capable of RX
2228 * Pause ONLY, we will advertise that we support both
2229 * symmetric and asymmetric Rx PAUSE. Later, we will
2230 * disable the adapter's ability to send PAUSE frames.
2232 mflcn_reg |= IXGBE_MFLCN_RFCE;
2234 case ixgbe_fc_tx_pause:
2236 * Tx Flow control is enabled, and Rx Flow control is
2237 * disabled by software override.
2239 fccfg_reg |= IXGBE_FCCFG_TFCE_802_3X;
2242 /* Flow control (both Rx and Tx) is enabled by SW override. */
2243 mflcn_reg |= IXGBE_MFLCN_RFCE;
2244 fccfg_reg |= IXGBE_FCCFG_TFCE_802_3X;
2247 hw_dbg(hw, "Flow control param set incorrectly\n");
2248 return IXGBE_ERR_CONFIG;
2251 /* Set 802.3x based flow control settings. */
2252 mflcn_reg |= IXGBE_MFLCN_DPF;
2253 IXGBE_WRITE_REG(hw, IXGBE_MFLCN, mflcn_reg);
2254 IXGBE_WRITE_REG(hw, IXGBE_FCCFG, fccfg_reg);
2256 /* Set up and enable Rx high/low water mark thresholds, enable XON. */
2257 for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
2258 if ((hw->fc.current_mode & ixgbe_fc_tx_pause) &&
2259 hw->fc.high_water[i]) {
2260 fcrtl = (hw->fc.low_water[i] << 10) | IXGBE_FCRTL_XONE;
2261 IXGBE_WRITE_REG(hw, IXGBE_FCRTL_82599(i), fcrtl);
2262 fcrth = (hw->fc.high_water[i] << 10) | IXGBE_FCRTH_FCEN;
2264 IXGBE_WRITE_REG(hw, IXGBE_FCRTL_82599(i), 0);
2266 * In order to prevent Tx hangs when the internal Tx
2267 * switch is enabled we must set the high water mark
2268 * to the Rx packet buffer size - 24KB. This allows
2269 * the Tx switch to function even under heavy Rx
2272 fcrth = IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(i)) - 24576;
2275 IXGBE_WRITE_REG(hw, IXGBE_FCRTH_82599(i), fcrth);
2278 /* Configure pause time (2 TCs per register) */
2279 reg = hw->fc.pause_time * 0x00010001;
2280 for (i = 0; i < (MAX_TRAFFIC_CLASS / 2); i++)
2281 IXGBE_WRITE_REG(hw, IXGBE_FCTTV(i), reg);
2283 IXGBE_WRITE_REG(hw, IXGBE_FCRTV, hw->fc.pause_time / 2);
2289 * ixgbe_negotiate_fc - Negotiate flow control
2290 * @hw: pointer to hardware structure
2291 * @adv_reg: flow control advertised settings
2292 * @lp_reg: link partner's flow control settings
2293 * @adv_sym: symmetric pause bit in advertisement
2294 * @adv_asm: asymmetric pause bit in advertisement
2295 * @lp_sym: symmetric pause bit in link partner advertisement
2296 * @lp_asm: asymmetric pause bit in link partner advertisement
2298 * Find the intersection between advertised settings and link partner's
2299 * advertised settings
2301 s32 ixgbe_negotiate_fc(struct ixgbe_hw *hw, u32 adv_reg, u32 lp_reg,
2302 u32 adv_sym, u32 adv_asm, u32 lp_sym, u32 lp_asm)
2304 if ((!(adv_reg)) || (!(lp_reg)))
2305 return IXGBE_ERR_FC_NOT_NEGOTIATED;
2307 if ((adv_reg & adv_sym) && (lp_reg & lp_sym)) {
2309 * Now we need to check if the user selected Rx ONLY
2310 * of pause frames. In this case, we had to advertise
2311 * FULL flow control because we could not advertise RX
2312 * ONLY. Hence, we must now check to see if we need to
2313 * turn OFF the TRANSMISSION of PAUSE frames.
2315 if (hw->fc.requested_mode == ixgbe_fc_full) {
2316 hw->fc.current_mode = ixgbe_fc_full;
2317 hw_dbg(hw, "Flow Control = FULL.\n");
2319 hw->fc.current_mode = ixgbe_fc_rx_pause;
2320 hw_dbg(hw, "Flow Control=RX PAUSE frames only\n");
2322 } else if (!(adv_reg & adv_sym) && (adv_reg & adv_asm) &&
2323 (lp_reg & lp_sym) && (lp_reg & lp_asm)) {
2324 hw->fc.current_mode = ixgbe_fc_tx_pause;
2325 hw_dbg(hw, "Flow Control = TX PAUSE frames only.\n");
2326 } else if ((adv_reg & adv_sym) && (adv_reg & adv_asm) &&
2327 !(lp_reg & lp_sym) && (lp_reg & lp_asm)) {
2328 hw->fc.current_mode = ixgbe_fc_rx_pause;
2329 hw_dbg(hw, "Flow Control = RX PAUSE frames only.\n");
2331 hw->fc.current_mode = ixgbe_fc_none;
2332 hw_dbg(hw, "Flow Control = NONE.\n");
2338 * ixgbe_fc_autoneg_fiber - Enable flow control on 1 gig fiber
2339 * @hw: pointer to hardware structure
2341 * Enable flow control according on 1 gig fiber.
2343 static s32 ixgbe_fc_autoneg_fiber(struct ixgbe_hw *hw)
2345 u32 pcs_anadv_reg, pcs_lpab_reg, linkstat;
2349 * On multispeed fiber at 1g, bail out if
2350 * - link is up but AN did not complete, or if
2351 * - link is up and AN completed but timed out
2354 linkstat = IXGBE_READ_REG(hw, IXGBE_PCS1GLSTA);
2355 if ((!!(linkstat & IXGBE_PCS1GLSTA_AN_COMPLETE) == 0) ||
2356 (!!(linkstat & IXGBE_PCS1GLSTA_AN_TIMED_OUT) == 1))
2357 return IXGBE_ERR_FC_NOT_NEGOTIATED;
2359 pcs_anadv_reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANA);
2360 pcs_lpab_reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANLP);
2362 ret_val = ixgbe_negotiate_fc(hw, pcs_anadv_reg,
2363 pcs_lpab_reg, IXGBE_PCS1GANA_SYM_PAUSE,
2364 IXGBE_PCS1GANA_ASM_PAUSE,
2365 IXGBE_PCS1GANA_SYM_PAUSE,
2366 IXGBE_PCS1GANA_ASM_PAUSE);
2372 * ixgbe_fc_autoneg_backplane - Enable flow control IEEE clause 37
2373 * @hw: pointer to hardware structure
2375 * Enable flow control according to IEEE clause 37.
2377 static s32 ixgbe_fc_autoneg_backplane(struct ixgbe_hw *hw)
2379 u32 links2, anlp1_reg, autoc_reg, links;
2383 * On backplane, bail out if
2384 * - backplane autoneg was not completed, or if
2385 * - we are 82599 and link partner is not AN enabled
2387 links = IXGBE_READ_REG(hw, IXGBE_LINKS);
2388 if ((links & IXGBE_LINKS_KX_AN_COMP) == 0)
2389 return IXGBE_ERR_FC_NOT_NEGOTIATED;
2391 if (hw->mac.type == ixgbe_mac_82599EB) {
2392 links2 = IXGBE_READ_REG(hw, IXGBE_LINKS2);
2393 if ((links2 & IXGBE_LINKS2_AN_SUPPORTED) == 0)
2394 return IXGBE_ERR_FC_NOT_NEGOTIATED;
2397 * Read the 10g AN autoc and LP ability registers and resolve
2398 * local flow control settings accordingly
2400 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
2401 anlp1_reg = IXGBE_READ_REG(hw, IXGBE_ANLP1);
2403 ret_val = ixgbe_negotiate_fc(hw, autoc_reg,
2404 anlp1_reg, IXGBE_AUTOC_SYM_PAUSE, IXGBE_AUTOC_ASM_PAUSE,
2405 IXGBE_ANLP1_SYM_PAUSE, IXGBE_ANLP1_ASM_PAUSE);
2411 * ixgbe_fc_autoneg_copper - Enable flow control IEEE clause 37
2412 * @hw: pointer to hardware structure
2414 * Enable flow control according to IEEE clause 37.
2416 static s32 ixgbe_fc_autoneg_copper(struct ixgbe_hw *hw)
2418 u16 technology_ability_reg = 0;
2419 u16 lp_technology_ability_reg = 0;
2421 hw->phy.ops.read_reg(hw, MDIO_AN_ADVERTISE,
2423 &technology_ability_reg);
2424 hw->phy.ops.read_reg(hw, MDIO_AN_LPA,
2426 &lp_technology_ability_reg);
2428 return ixgbe_negotiate_fc(hw, (u32)technology_ability_reg,
2429 (u32)lp_technology_ability_reg,
2430 IXGBE_TAF_SYM_PAUSE, IXGBE_TAF_ASM_PAUSE,
2431 IXGBE_TAF_SYM_PAUSE, IXGBE_TAF_ASM_PAUSE);
2435 * ixgbe_fc_autoneg - Configure flow control
2436 * @hw: pointer to hardware structure
2438 * Compares our advertised flow control capabilities to those advertised by
2439 * our link partner, and determines the proper flow control mode to use.
2441 void ixgbe_fc_autoneg(struct ixgbe_hw *hw)
2443 s32 ret_val = IXGBE_ERR_FC_NOT_NEGOTIATED;
2444 ixgbe_link_speed speed;
2448 * AN should have completed when the cable was plugged in.
2449 * Look for reasons to bail out. Bail out if:
2450 * - FC autoneg is disabled, or if
2453 * Since we're being called from an LSC, link is already known to be up.
2454 * So use link_up_wait_to_complete=false.
2456 if (hw->fc.disable_fc_autoneg)
2459 hw->mac.ops.check_link(hw, &speed, &link_up, false);
2463 switch (hw->phy.media_type) {
2464 /* Autoneg flow control on fiber adapters */
2465 case ixgbe_media_type_fiber:
2466 if (speed == IXGBE_LINK_SPEED_1GB_FULL)
2467 ret_val = ixgbe_fc_autoneg_fiber(hw);
2470 /* Autoneg flow control on backplane adapters */
2471 case ixgbe_media_type_backplane:
2472 ret_val = ixgbe_fc_autoneg_backplane(hw);
2475 /* Autoneg flow control on copper adapters */
2476 case ixgbe_media_type_copper:
2477 if (ixgbe_device_supports_autoneg_fc(hw))
2478 ret_val = ixgbe_fc_autoneg_copper(hw);
2487 hw->fc.fc_was_autonegged = true;
2489 hw->fc.fc_was_autonegged = false;
2490 hw->fc.current_mode = hw->fc.requested_mode;
2495 * ixgbe_pcie_timeout_poll - Return number of times to poll for completion
2496 * @hw: pointer to hardware structure
2498 * System-wide timeout range is encoded in PCIe Device Control2 register.
2500 * Add 10% to specified maximum and return the number of times to poll for
2501 * completion timeout, in units of 100 microsec. Never return less than
2502 * 800 = 80 millisec.
2504 static u32 ixgbe_pcie_timeout_poll(struct ixgbe_hw *hw)
2509 devctl2 = ixgbe_read_pci_cfg_word(hw, IXGBE_PCI_DEVICE_CONTROL2);
2510 devctl2 &= IXGBE_PCIDEVCTRL2_TIMEO_MASK;
2513 case IXGBE_PCIDEVCTRL2_65_130ms:
2514 pollcnt = 1300; /* 130 millisec */
2516 case IXGBE_PCIDEVCTRL2_260_520ms:
2517 pollcnt = 5200; /* 520 millisec */
2519 case IXGBE_PCIDEVCTRL2_1_2s:
2520 pollcnt = 20000; /* 2 sec */
2522 case IXGBE_PCIDEVCTRL2_4_8s:
2523 pollcnt = 80000; /* 8 sec */
2525 case IXGBE_PCIDEVCTRL2_17_34s:
2526 pollcnt = 34000; /* 34 sec */
2528 case IXGBE_PCIDEVCTRL2_50_100us: /* 100 microsecs */
2529 case IXGBE_PCIDEVCTRL2_1_2ms: /* 2 millisecs */
2530 case IXGBE_PCIDEVCTRL2_16_32ms: /* 32 millisec */
2531 case IXGBE_PCIDEVCTRL2_16_32ms_def: /* 32 millisec default */
2533 pollcnt = 800; /* 80 millisec minimum */
2537 /* add 10% to spec maximum */
2538 return (pollcnt * 11) / 10;
2542 * ixgbe_disable_pcie_master - Disable PCI-express master access
2543 * @hw: pointer to hardware structure
2545 * Disables PCI-Express master access and verifies there are no pending
2546 * requests. IXGBE_ERR_MASTER_REQUESTS_PENDING is returned if master disable
2547 * bit hasn't caused the master requests to be disabled, else 0
2548 * is returned signifying master requests disabled.
2550 static s32 ixgbe_disable_pcie_master(struct ixgbe_hw *hw)
2555 /* Always set this bit to ensure any future transactions are blocked */
2556 IXGBE_WRITE_REG(hw, IXGBE_CTRL, IXGBE_CTRL_GIO_DIS);
2558 /* Poll for bit to read as set */
2559 for (i = 0; i < IXGBE_PCI_MASTER_DISABLE_TIMEOUT; i++) {
2560 if (IXGBE_READ_REG(hw, IXGBE_CTRL) & IXGBE_CTRL_GIO_DIS)
2562 usleep_range(100, 120);
2564 if (i >= IXGBE_PCI_MASTER_DISABLE_TIMEOUT) {
2565 hw_dbg(hw, "GIO disable did not set - requesting resets\n");
2566 goto gio_disable_fail;
2569 /* Exit if master requests are blocked */
2570 if (!(IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_GIO) ||
2571 ixgbe_removed(hw->hw_addr))
2574 /* Poll for master request bit to clear */
2575 for (i = 0; i < IXGBE_PCI_MASTER_DISABLE_TIMEOUT; i++) {
2577 if (!(IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_GIO))
2582 * Two consecutive resets are required via CTRL.RST per datasheet
2583 * 5.2.5.3.2 Master Disable. We set a flag to inform the reset routine
2584 * of this need. The first reset prevents new master requests from
2585 * being issued by our device. We then must wait 1usec or more for any
2586 * remaining completions from the PCIe bus to trickle in, and then reset
2587 * again to clear out any effects they may have had on our device.
2589 hw_dbg(hw, "GIO Master Disable bit didn't clear - requesting resets\n");
2591 hw->mac.flags |= IXGBE_FLAGS_DOUBLE_RESET_REQUIRED;
2593 if (hw->mac.type >= ixgbe_mac_X550)
2597 * Before proceeding, make sure that the PCIe block does not have
2598 * transactions pending.
2600 poll = ixgbe_pcie_timeout_poll(hw);
2601 for (i = 0; i < poll; i++) {
2603 value = ixgbe_read_pci_cfg_word(hw, IXGBE_PCI_DEVICE_STATUS);
2604 if (ixgbe_removed(hw->hw_addr))
2606 if (!(value & IXGBE_PCI_DEVICE_STATUS_TRANSACTION_PENDING))
2610 hw_dbg(hw, "PCIe transaction pending bit also did not clear.\n");
2611 return IXGBE_ERR_MASTER_REQUESTS_PENDING;
2615 * ixgbe_acquire_swfw_sync - Acquire SWFW semaphore
2616 * @hw: pointer to hardware structure
2617 * @mask: Mask to specify which semaphore to acquire
2619 * Acquires the SWFW semaphore through the GSSR register for the specified
2620 * function (CSR, PHY0, PHY1, EEPROM, Flash)
2622 s32 ixgbe_acquire_swfw_sync(struct ixgbe_hw *hw, u32 mask)
2626 u32 fwmask = mask << 5;
2630 for (i = 0; i < timeout; i++) {
2632 * SW NVM semaphore bit is used for access to all
2633 * SW_FW_SYNC bits (not just NVM)
2635 if (ixgbe_get_eeprom_semaphore(hw))
2636 return IXGBE_ERR_SWFW_SYNC;
2638 gssr = IXGBE_READ_REG(hw, IXGBE_GSSR);
2639 if (!(gssr & (fwmask | swmask))) {
2641 IXGBE_WRITE_REG(hw, IXGBE_GSSR, gssr);
2642 ixgbe_release_eeprom_semaphore(hw);
2645 /* Resource is currently in use by FW or SW */
2646 ixgbe_release_eeprom_semaphore(hw);
2647 usleep_range(5000, 10000);
2651 /* If time expired clear the bits holding the lock and retry */
2652 if (gssr & (fwmask | swmask))
2653 ixgbe_release_swfw_sync(hw, gssr & (fwmask | swmask));
2655 usleep_range(5000, 10000);
2656 return IXGBE_ERR_SWFW_SYNC;
2660 * ixgbe_release_swfw_sync - Release SWFW semaphore
2661 * @hw: pointer to hardware structure
2662 * @mask: Mask to specify which semaphore to release
2664 * Releases the SWFW semaphore through the GSSR register for the specified
2665 * function (CSR, PHY0, PHY1, EEPROM, Flash)
2667 void ixgbe_release_swfw_sync(struct ixgbe_hw *hw, u32 mask)
2672 ixgbe_get_eeprom_semaphore(hw);
2674 gssr = IXGBE_READ_REG(hw, IXGBE_GSSR);
2676 IXGBE_WRITE_REG(hw, IXGBE_GSSR, gssr);
2678 ixgbe_release_eeprom_semaphore(hw);
2682 * prot_autoc_read_generic - Hides MAC differences needed for AUTOC read
2683 * @hw: pointer to hardware structure
2684 * @reg_val: Value we read from AUTOC
2685 * @locked: bool to indicate whether the SW/FW lock should be taken. Never
2686 * true in this the generic case.
2688 * The default case requires no protection so just to the register read.
2690 s32 prot_autoc_read_generic(struct ixgbe_hw *hw, bool *locked, u32 *reg_val)
2693 *reg_val = IXGBE_READ_REG(hw, IXGBE_AUTOC);
2698 * prot_autoc_write_generic - Hides MAC differences needed for AUTOC write
2699 * @hw: pointer to hardware structure
2700 * @reg_val: value to write to AUTOC
2701 * @locked: bool to indicate whether the SW/FW lock was already taken by
2704 s32 prot_autoc_write_generic(struct ixgbe_hw *hw, u32 reg_val, bool locked)
2706 IXGBE_WRITE_REG(hw, IXGBE_AUTOC, reg_val);
2711 * ixgbe_disable_rx_buff_generic - Stops the receive data path
2712 * @hw: pointer to hardware structure
2714 * Stops the receive data path and waits for the HW to internally
2715 * empty the Rx security block.
2717 s32 ixgbe_disable_rx_buff_generic(struct ixgbe_hw *hw)
2719 #define IXGBE_MAX_SECRX_POLL 40
2723 secrxreg = IXGBE_READ_REG(hw, IXGBE_SECRXCTRL);
2724 secrxreg |= IXGBE_SECRXCTRL_RX_DIS;
2725 IXGBE_WRITE_REG(hw, IXGBE_SECRXCTRL, secrxreg);
2726 for (i = 0; i < IXGBE_MAX_SECRX_POLL; i++) {
2727 secrxreg = IXGBE_READ_REG(hw, IXGBE_SECRXSTAT);
2728 if (secrxreg & IXGBE_SECRXSTAT_SECRX_RDY)
2731 /* Use interrupt-safe sleep just in case */
2735 /* For informational purposes only */
2736 if (i >= IXGBE_MAX_SECRX_POLL)
2737 hw_dbg(hw, "Rx unit being enabled before security path fully disabled. Continuing with init.\n");
2744 * ixgbe_enable_rx_buff - Enables the receive data path
2745 * @hw: pointer to hardware structure
2747 * Enables the receive data path
2749 s32 ixgbe_enable_rx_buff_generic(struct ixgbe_hw *hw)
2753 secrxreg = IXGBE_READ_REG(hw, IXGBE_SECRXCTRL);
2754 secrxreg &= ~IXGBE_SECRXCTRL_RX_DIS;
2755 IXGBE_WRITE_REG(hw, IXGBE_SECRXCTRL, secrxreg);
2756 IXGBE_WRITE_FLUSH(hw);
2762 * ixgbe_enable_rx_dma_generic - Enable the Rx DMA unit
2763 * @hw: pointer to hardware structure
2764 * @regval: register value to write to RXCTRL
2766 * Enables the Rx DMA unit
2768 s32 ixgbe_enable_rx_dma_generic(struct ixgbe_hw *hw, u32 regval)
2770 if (regval & IXGBE_RXCTRL_RXEN)
2771 hw->mac.ops.enable_rx(hw);
2773 hw->mac.ops.disable_rx(hw);
2779 * ixgbe_blink_led_start_generic - Blink LED based on index.
2780 * @hw: pointer to hardware structure
2781 * @index: led number to blink
2783 s32 ixgbe_blink_led_start_generic(struct ixgbe_hw *hw, u32 index)
2785 ixgbe_link_speed speed = 0;
2786 bool link_up = false;
2787 u32 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
2788 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
2789 bool locked = false;
2793 return IXGBE_ERR_PARAM;
2796 * Link must be up to auto-blink the LEDs;
2797 * Force it if link is down.
2799 hw->mac.ops.check_link(hw, &speed, &link_up, false);
2802 ret_val = hw->mac.ops.prot_autoc_read(hw, &locked, &autoc_reg);
2806 autoc_reg |= IXGBE_AUTOC_AN_RESTART;
2807 autoc_reg |= IXGBE_AUTOC_FLU;
2809 ret_val = hw->mac.ops.prot_autoc_write(hw, autoc_reg, locked);
2813 IXGBE_WRITE_FLUSH(hw);
2815 usleep_range(10000, 20000);
2818 led_reg &= ~IXGBE_LED_MODE_MASK(index);
2819 led_reg |= IXGBE_LED_BLINK(index);
2820 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
2821 IXGBE_WRITE_FLUSH(hw);
2827 * ixgbe_blink_led_stop_generic - Stop blinking LED based on index.
2828 * @hw: pointer to hardware structure
2829 * @index: led number to stop blinking
2831 s32 ixgbe_blink_led_stop_generic(struct ixgbe_hw *hw, u32 index)
2834 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
2835 bool locked = false;
2839 return IXGBE_ERR_PARAM;
2841 ret_val = hw->mac.ops.prot_autoc_read(hw, &locked, &autoc_reg);
2845 autoc_reg &= ~IXGBE_AUTOC_FLU;
2846 autoc_reg |= IXGBE_AUTOC_AN_RESTART;
2848 ret_val = hw->mac.ops.prot_autoc_write(hw, autoc_reg, locked);
2852 led_reg &= ~IXGBE_LED_MODE_MASK(index);
2853 led_reg &= ~IXGBE_LED_BLINK(index);
2854 led_reg |= IXGBE_LED_LINK_ACTIVE << IXGBE_LED_MODE_SHIFT(index);
2855 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
2856 IXGBE_WRITE_FLUSH(hw);
2862 * ixgbe_get_san_mac_addr_offset - Get SAN MAC address offset from the EEPROM
2863 * @hw: pointer to hardware structure
2864 * @san_mac_offset: SAN MAC address offset
2866 * This function will read the EEPROM location for the SAN MAC address
2867 * pointer, and returns the value at that location. This is used in both
2868 * get and set mac_addr routines.
2870 static s32 ixgbe_get_san_mac_addr_offset(struct ixgbe_hw *hw,
2871 u16 *san_mac_offset)
2876 * First read the EEPROM pointer to see if the MAC addresses are
2879 ret_val = hw->eeprom.ops.read(hw, IXGBE_SAN_MAC_ADDR_PTR,
2882 hw_err(hw, "eeprom read at offset %d failed\n",
2883 IXGBE_SAN_MAC_ADDR_PTR);
2889 * ixgbe_get_san_mac_addr_generic - SAN MAC address retrieval from the EEPROM
2890 * @hw: pointer to hardware structure
2891 * @san_mac_addr: SAN MAC address
2893 * Reads the SAN MAC address from the EEPROM, if it's available. This is
2894 * per-port, so set_lan_id() must be called before reading the addresses.
2895 * set_lan_id() is called by identify_sfp(), but this cannot be relied
2896 * upon for non-SFP connections, so we must call it here.
2898 s32 ixgbe_get_san_mac_addr_generic(struct ixgbe_hw *hw, u8 *san_mac_addr)
2900 u16 san_mac_data, san_mac_offset;
2905 * First read the EEPROM pointer to see if the MAC addresses are
2906 * available. If they're not, no point in calling set_lan_id() here.
2908 ret_val = ixgbe_get_san_mac_addr_offset(hw, &san_mac_offset);
2909 if (ret_val || san_mac_offset == 0 || san_mac_offset == 0xFFFF)
2911 goto san_mac_addr_clr;
2913 /* make sure we know which port we need to program */
2914 hw->mac.ops.set_lan_id(hw);
2915 /* apply the port offset to the address offset */
2916 (hw->bus.func) ? (san_mac_offset += IXGBE_SAN_MAC_ADDR_PORT1_OFFSET) :
2917 (san_mac_offset += IXGBE_SAN_MAC_ADDR_PORT0_OFFSET);
2918 for (i = 0; i < 3; i++) {
2919 ret_val = hw->eeprom.ops.read(hw, san_mac_offset,
2922 hw_err(hw, "eeprom read at offset %d failed\n",
2924 goto san_mac_addr_clr;
2926 san_mac_addr[i * 2] = (u8)(san_mac_data);
2927 san_mac_addr[i * 2 + 1] = (u8)(san_mac_data >> 8);
2933 /* No addresses available in this EEPROM. It's not necessarily an
2934 * error though, so just wipe the local address and return.
2936 for (i = 0; i < 6; i++)
2937 san_mac_addr[i] = 0xFF;
2942 * ixgbe_get_pcie_msix_count_generic - Gets MSI-X vector count
2943 * @hw: pointer to hardware structure
2945 * Read PCIe configuration space, and get the MSI-X vector count from
2946 * the capabilities table.
2948 u16 ixgbe_get_pcie_msix_count_generic(struct ixgbe_hw *hw)
2954 switch (hw->mac.type) {
2955 case ixgbe_mac_82598EB:
2956 pcie_offset = IXGBE_PCIE_MSIX_82598_CAPS;
2957 max_msix_count = IXGBE_MAX_MSIX_VECTORS_82598;
2959 case ixgbe_mac_82599EB:
2960 case ixgbe_mac_X540:
2961 case ixgbe_mac_X550:
2962 case ixgbe_mac_X550EM_x:
2963 case ixgbe_mac_x550em_a:
2964 pcie_offset = IXGBE_PCIE_MSIX_82599_CAPS;
2965 max_msix_count = IXGBE_MAX_MSIX_VECTORS_82599;
2971 msix_count = ixgbe_read_pci_cfg_word(hw, pcie_offset);
2972 if (ixgbe_removed(hw->hw_addr))
2974 msix_count &= IXGBE_PCIE_MSIX_TBL_SZ_MASK;
2976 /* MSI-X count is zero-based in HW */
2979 if (msix_count > max_msix_count)
2980 msix_count = max_msix_count;
2986 * ixgbe_clear_vmdq_generic - Disassociate a VMDq pool index from a rx address
2987 * @hw: pointer to hardware struct
2988 * @rar: receive address register index to disassociate
2989 * @vmdq: VMDq pool index to remove from the rar
2991 s32 ixgbe_clear_vmdq_generic(struct ixgbe_hw *hw, u32 rar, u32 vmdq)
2993 u32 mpsar_lo, mpsar_hi;
2994 u32 rar_entries = hw->mac.num_rar_entries;
2996 /* Make sure we are using a valid rar index range */
2997 if (rar >= rar_entries) {
2998 hw_dbg(hw, "RAR index %d is out of range.\n", rar);
2999 return IXGBE_ERR_INVALID_ARGUMENT;
3002 mpsar_lo = IXGBE_READ_REG(hw, IXGBE_MPSAR_LO(rar));
3003 mpsar_hi = IXGBE_READ_REG(hw, IXGBE_MPSAR_HI(rar));
3005 if (ixgbe_removed(hw->hw_addr))
3008 if (!mpsar_lo && !mpsar_hi)
3011 if (vmdq == IXGBE_CLEAR_VMDQ_ALL) {
3013 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), 0);
3017 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), 0);
3020 } else if (vmdq < 32) {
3021 mpsar_lo &= ~BIT(vmdq);
3022 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), mpsar_lo);
3024 mpsar_hi &= ~BIT(vmdq - 32);
3025 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), mpsar_hi);
3028 /* was that the last pool using this rar? */
3029 if (mpsar_lo == 0 && mpsar_hi == 0 &&
3030 rar != 0 && rar != hw->mac.san_mac_rar_index)
3031 hw->mac.ops.clear_rar(hw, rar);
3037 * ixgbe_set_vmdq_generic - Associate a VMDq pool index with a rx address
3038 * @hw: pointer to hardware struct
3039 * @rar: receive address register index to associate with a VMDq index
3040 * @vmdq: VMDq pool index
3042 s32 ixgbe_set_vmdq_generic(struct ixgbe_hw *hw, u32 rar, u32 vmdq)
3045 u32 rar_entries = hw->mac.num_rar_entries;
3047 /* Make sure we are using a valid rar index range */
3048 if (rar >= rar_entries) {
3049 hw_dbg(hw, "RAR index %d is out of range.\n", rar);
3050 return IXGBE_ERR_INVALID_ARGUMENT;
3054 mpsar = IXGBE_READ_REG(hw, IXGBE_MPSAR_LO(rar));
3056 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), mpsar);
3058 mpsar = IXGBE_READ_REG(hw, IXGBE_MPSAR_HI(rar));
3059 mpsar |= BIT(vmdq - 32);
3060 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), mpsar);
3066 * This function should only be involved in the IOV mode.
3067 * In IOV mode, Default pool is next pool after the number of
3068 * VFs advertized and not 0.
3069 * MPSAR table needs to be updated for SAN_MAC RAR [hw->mac.san_mac_rar_index]
3071 * ixgbe_set_vmdq_san_mac - Associate default VMDq pool index with a rx address
3072 * @hw: pointer to hardware struct
3073 * @vmdq: VMDq pool index
3075 s32 ixgbe_set_vmdq_san_mac_generic(struct ixgbe_hw *hw, u32 vmdq)
3077 u32 rar = hw->mac.san_mac_rar_index;
3080 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), BIT(vmdq));
3081 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), 0);
3083 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), 0);
3084 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), BIT(vmdq - 32));
3091 * ixgbe_init_uta_tables_generic - Initialize the Unicast Table Array
3092 * @hw: pointer to hardware structure
3094 s32 ixgbe_init_uta_tables_generic(struct ixgbe_hw *hw)
3098 for (i = 0; i < 128; i++)
3099 IXGBE_WRITE_REG(hw, IXGBE_UTA(i), 0);
3105 * ixgbe_find_vlvf_slot - find the vlanid or the first empty slot
3106 * @hw: pointer to hardware structure
3107 * @vlan: VLAN id to write to VLAN filter
3109 * return the VLVF index where this VLAN id should be placed
3112 static s32 ixgbe_find_vlvf_slot(struct ixgbe_hw *hw, u32 vlan, bool vlvf_bypass)
3114 s32 regindex, first_empty_slot;
3117 /* short cut the special case */
3121 /* if vlvf_bypass is set we don't want to use an empty slot, we
3122 * will simply bypass the VLVF if there are no entries present in the
3123 * VLVF that contain our VLAN
3125 first_empty_slot = vlvf_bypass ? IXGBE_ERR_NO_SPACE : 0;
3127 /* add VLAN enable bit for comparison */
3128 vlan |= IXGBE_VLVF_VIEN;
3130 /* Search for the vlan id in the VLVF entries. Save off the first empty
3131 * slot found along the way.
3133 * pre-decrement loop covering (IXGBE_VLVF_ENTRIES - 1) .. 1
3135 for (regindex = IXGBE_VLVF_ENTRIES; --regindex;) {
3136 bits = IXGBE_READ_REG(hw, IXGBE_VLVF(regindex));
3139 if (!first_empty_slot && !bits)
3140 first_empty_slot = regindex;
3143 /* If we are here then we didn't find the VLAN. Return first empty
3144 * slot we found during our search, else error.
3146 if (!first_empty_slot)
3147 hw_dbg(hw, "No space in VLVF.\n");
3149 return first_empty_slot ? : IXGBE_ERR_NO_SPACE;
3153 * ixgbe_set_vfta_generic - Set VLAN filter table
3154 * @hw: pointer to hardware structure
3155 * @vlan: VLAN id to write to VLAN filter
3156 * @vind: VMDq output index that maps queue to VLAN id in VFVFB
3157 * @vlan_on: boolean flag to turn on/off VLAN in VFVF
3158 * @vlvf_bypass: boolean flag indicating updating default pool is okay
3160 * Turn on/off specified VLAN in the VLAN filter table.
3162 s32 ixgbe_set_vfta_generic(struct ixgbe_hw *hw, u32 vlan, u32 vind,
3163 bool vlan_on, bool vlvf_bypass)
3165 u32 regidx, vfta_delta, vfta, bits;
3168 if ((vlan > 4095) || (vind > 63))
3169 return IXGBE_ERR_PARAM;
3172 * this is a 2 part operation - first the VFTA, then the
3173 * VLVF and VLVFB if VT Mode is set
3174 * We don't write the VFTA until we know the VLVF part succeeded.
3178 * The VFTA is a bitstring made up of 128 32-bit registers
3179 * that enable the particular VLAN id, much like the MTA:
3180 * bits[11-5]: which register
3181 * bits[4-0]: which bit in the register
3184 vfta_delta = BIT(vlan % 32);
3185 vfta = IXGBE_READ_REG(hw, IXGBE_VFTA(regidx));
3187 /* vfta_delta represents the difference between the current value
3188 * of vfta and the value we want in the register. Since the diff
3189 * is an XOR mask we can just update vfta using an XOR.
3191 vfta_delta &= vlan_on ? ~vfta : vfta;
3197 * make sure the vlan is in VLVF
3198 * set the vind bit in the matching VLVFB
3200 * clear the pool bit and possibly the vind
3202 if (!(IXGBE_READ_REG(hw, IXGBE_VT_CTL) & IXGBE_VT_CTL_VT_ENABLE))
3205 vlvf_index = ixgbe_find_vlvf_slot(hw, vlan, vlvf_bypass);
3206 if (vlvf_index < 0) {
3212 bits = IXGBE_READ_REG(hw, IXGBE_VLVFB(vlvf_index * 2 + vind / 32));
3214 /* set the pool bit */
3215 bits |= BIT(vind % 32);
3219 /* clear the pool bit */
3220 bits ^= BIT(vind % 32);
3223 !IXGBE_READ_REG(hw, IXGBE_VLVFB(vlvf_index * 2 + 1 - vind / 32))) {
3224 /* Clear VFTA first, then disable VLVF. Otherwise
3225 * we run the risk of stray packets leaking into
3226 * the PF via the default pool
3229 IXGBE_WRITE_REG(hw, IXGBE_VFTA(regidx), vfta);
3231 /* disable VLVF and clear remaining bit from pool */
3232 IXGBE_WRITE_REG(hw, IXGBE_VLVF(vlvf_index), 0);
3233 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(vlvf_index * 2 + vind / 32), 0);
3238 /* If there are still bits set in the VLVFB registers
3239 * for the VLAN ID indicated we need to see if the
3240 * caller is requesting that we clear the VFTA entry bit.
3241 * If the caller has requested that we clear the VFTA
3242 * entry bit but there are still pools/VFs using this VLAN
3243 * ID entry then ignore the request. We're not worried
3244 * about the case where we're turning the VFTA VLAN ID
3245 * entry bit on, only when requested to turn it off as
3246 * there may be multiple pools and/or VFs using the
3247 * VLAN ID entry. In that case we cannot clear the
3248 * VFTA bit until all pools/VFs using that VLAN ID have also
3249 * been cleared. This will be indicated by "bits" being
3255 /* record pool change and enable VLAN ID if not already enabled */
3256 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(vlvf_index * 2 + vind / 32), bits);
3257 IXGBE_WRITE_REG(hw, IXGBE_VLVF(vlvf_index), IXGBE_VLVF_VIEN | vlan);
3260 /* Update VFTA now that we are ready for traffic */
3262 IXGBE_WRITE_REG(hw, IXGBE_VFTA(regidx), vfta);
3268 * ixgbe_clear_vfta_generic - Clear VLAN filter table
3269 * @hw: pointer to hardware structure
3271 * Clears the VLAN filer table, and the VMDq index associated with the filter
3273 s32 ixgbe_clear_vfta_generic(struct ixgbe_hw *hw)
3277 for (offset = 0; offset < hw->mac.vft_size; offset++)
3278 IXGBE_WRITE_REG(hw, IXGBE_VFTA(offset), 0);
3280 for (offset = 0; offset < IXGBE_VLVF_ENTRIES; offset++) {
3281 IXGBE_WRITE_REG(hw, IXGBE_VLVF(offset), 0);
3282 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(offset * 2), 0);
3283 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(offset * 2 + 1), 0);
3290 * ixgbe_need_crosstalk_fix - Determine if we need to do cross talk fix
3291 * @hw: pointer to hardware structure
3293 * Contains the logic to identify if we need to verify link for the
3296 static bool ixgbe_need_crosstalk_fix(struct ixgbe_hw *hw)
3298 /* Does FW say we need the fix */
3299 if (!hw->need_crosstalk_fix)
3302 /* Only consider SFP+ PHYs i.e. media type fiber */
3303 switch (hw->mac.ops.get_media_type(hw)) {
3304 case ixgbe_media_type_fiber:
3305 case ixgbe_media_type_fiber_qsfp:
3315 * ixgbe_check_mac_link_generic - Determine link and speed status
3316 * @hw: pointer to hardware structure
3317 * @speed: pointer to link speed
3318 * @link_up: true when link is up
3319 * @link_up_wait_to_complete: bool used to wait for link up or not
3321 * Reads the links register to determine if link is up and the current speed
3323 s32 ixgbe_check_mac_link_generic(struct ixgbe_hw *hw, ixgbe_link_speed *speed,
3324 bool *link_up, bool link_up_wait_to_complete)
3326 u32 links_reg, links_orig;
3329 /* If Crosstalk fix enabled do the sanity check of making sure
3330 * the SFP+ cage is full.
3332 if (ixgbe_need_crosstalk_fix(hw)) {
3335 switch (hw->mac.type) {
3336 case ixgbe_mac_82599EB:
3337 sfp_cage_full = IXGBE_READ_REG(hw, IXGBE_ESDP) &
3340 case ixgbe_mac_X550EM_x:
3341 case ixgbe_mac_x550em_a:
3342 sfp_cage_full = IXGBE_READ_REG(hw, IXGBE_ESDP) &
3346 /* sanity check - No SFP+ devices here */
3347 sfp_cage_full = false;
3351 if (!sfp_cage_full) {
3353 *speed = IXGBE_LINK_SPEED_UNKNOWN;
3358 /* clear the old state */
3359 links_orig = IXGBE_READ_REG(hw, IXGBE_LINKS);
3361 links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
3363 if (links_orig != links_reg) {
3364 hw_dbg(hw, "LINKS changed from %08X to %08X\n",
3365 links_orig, links_reg);
3368 if (link_up_wait_to_complete) {
3369 for (i = 0; i < IXGBE_LINK_UP_TIME; i++) {
3370 if (links_reg & IXGBE_LINKS_UP) {
3377 links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
3380 if (links_reg & IXGBE_LINKS_UP)
3386 switch (links_reg & IXGBE_LINKS_SPEED_82599) {
3387 case IXGBE_LINKS_SPEED_10G_82599:
3388 if ((hw->mac.type >= ixgbe_mac_X550) &&
3389 (links_reg & IXGBE_LINKS_SPEED_NON_STD))
3390 *speed = IXGBE_LINK_SPEED_2_5GB_FULL;
3392 *speed = IXGBE_LINK_SPEED_10GB_FULL;
3394 case IXGBE_LINKS_SPEED_1G_82599:
3395 *speed = IXGBE_LINK_SPEED_1GB_FULL;
3397 case IXGBE_LINKS_SPEED_100_82599:
3398 if ((hw->mac.type >= ixgbe_mac_X550) &&
3399 (links_reg & IXGBE_LINKS_SPEED_NON_STD))
3400 *speed = IXGBE_LINK_SPEED_5GB_FULL;
3402 *speed = IXGBE_LINK_SPEED_100_FULL;
3404 case IXGBE_LINKS_SPEED_10_X550EM_A:
3405 *speed = IXGBE_LINK_SPEED_UNKNOWN;
3406 if (hw->device_id == IXGBE_DEV_ID_X550EM_A_1G_T ||
3407 hw->device_id == IXGBE_DEV_ID_X550EM_A_1G_T_L) {
3408 *speed = IXGBE_LINK_SPEED_10_FULL;
3412 *speed = IXGBE_LINK_SPEED_UNKNOWN;
3419 * ixgbe_get_wwn_prefix_generic - Get alternative WWNN/WWPN prefix from
3421 * @hw: pointer to hardware structure
3422 * @wwnn_prefix: the alternative WWNN prefix
3423 * @wwpn_prefix: the alternative WWPN prefix
3425 * This function will read the EEPROM from the alternative SAN MAC address
3426 * block to check the support for the alternative WWNN/WWPN prefix support.
3428 s32 ixgbe_get_wwn_prefix_generic(struct ixgbe_hw *hw, u16 *wwnn_prefix,
3432 u16 alt_san_mac_blk_offset;
3434 /* clear output first */
3435 *wwnn_prefix = 0xFFFF;
3436 *wwpn_prefix = 0xFFFF;
3438 /* check if alternative SAN MAC is supported */
3439 offset = IXGBE_ALT_SAN_MAC_ADDR_BLK_PTR;
3440 if (hw->eeprom.ops.read(hw, offset, &alt_san_mac_blk_offset))
3441 goto wwn_prefix_err;
3443 if ((alt_san_mac_blk_offset == 0) ||
3444 (alt_san_mac_blk_offset == 0xFFFF))
3447 /* check capability in alternative san mac address block */
3448 offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_CAPS_OFFSET;
3449 if (hw->eeprom.ops.read(hw, offset, &caps))
3450 goto wwn_prefix_err;
3451 if (!(caps & IXGBE_ALT_SAN_MAC_ADDR_CAPS_ALTWWN))
3454 /* get the corresponding prefix for WWNN/WWPN */
3455 offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_WWNN_OFFSET;
3456 if (hw->eeprom.ops.read(hw, offset, wwnn_prefix))
3457 hw_err(hw, "eeprom read at offset %d failed\n", offset);
3459 offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_WWPN_OFFSET;
3460 if (hw->eeprom.ops.read(hw, offset, wwpn_prefix))
3461 goto wwn_prefix_err;
3466 hw_err(hw, "eeprom read at offset %d failed\n", offset);
3471 * ixgbe_set_mac_anti_spoofing - Enable/Disable MAC anti-spoofing
3472 * @hw: pointer to hardware structure
3473 * @enable: enable or disable switch for MAC anti-spoofing
3474 * @vf: Virtual Function pool - VF Pool to set for MAC anti-spoofing
3477 void ixgbe_set_mac_anti_spoofing(struct ixgbe_hw *hw, bool enable, int vf)
3479 int vf_target_reg = vf >> 3;
3480 int vf_target_shift = vf % 8;
3483 if (hw->mac.type == ixgbe_mac_82598EB)
3486 pfvfspoof = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg));
3488 pfvfspoof |= BIT(vf_target_shift);
3490 pfvfspoof &= ~BIT(vf_target_shift);
3491 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), pfvfspoof);
3495 * ixgbe_set_vlan_anti_spoofing - Enable/Disable VLAN anti-spoofing
3496 * @hw: pointer to hardware structure
3497 * @enable: enable or disable switch for VLAN anti-spoofing
3498 * @pf: Virtual Function pool - VF Pool to set for VLAN anti-spoofing
3501 void ixgbe_set_vlan_anti_spoofing(struct ixgbe_hw *hw, bool enable, int vf)
3503 int vf_target_reg = vf >> 3;
3504 int vf_target_shift = vf % 8 + IXGBE_SPOOF_VLANAS_SHIFT;
3507 if (hw->mac.type == ixgbe_mac_82598EB)
3510 pfvfspoof = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg));
3512 pfvfspoof |= BIT(vf_target_shift);
3514 pfvfspoof &= ~BIT(vf_target_shift);
3515 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), pfvfspoof);
3519 * ixgbe_get_device_caps_generic - Get additional device capabilities
3520 * @hw: pointer to hardware structure
3521 * @device_caps: the EEPROM word with the extra device capabilities
3523 * This function will read the EEPROM location for the device capabilities,
3524 * and return the word through device_caps.
3526 s32 ixgbe_get_device_caps_generic(struct ixgbe_hw *hw, u16 *device_caps)
3528 hw->eeprom.ops.read(hw, IXGBE_DEVICE_CAPS, device_caps);
3534 * ixgbe_set_rxpba_generic - Initialize RX packet buffer
3535 * @hw: pointer to hardware structure
3536 * @num_pb: number of packet buffers to allocate
3537 * @headroom: reserve n KB of headroom
3538 * @strategy: packet buffer allocation strategy
3540 void ixgbe_set_rxpba_generic(struct ixgbe_hw *hw,
3545 u32 pbsize = hw->mac.rx_pb_size;
3547 u32 rxpktsize, txpktsize, txpbthresh;
3549 /* Reserve headroom */
3555 /* Divide remaining packet buffer space amongst the number
3556 * of packet buffers requested using supplied strategy.
3559 case (PBA_STRATEGY_WEIGHTED):
3560 /* pba_80_48 strategy weight first half of packet buffer with
3561 * 5/8 of the packet buffer space.
3563 rxpktsize = ((pbsize * 5 * 2) / (num_pb * 8));
3564 pbsize -= rxpktsize * (num_pb / 2);
3565 rxpktsize <<= IXGBE_RXPBSIZE_SHIFT;
3566 for (; i < (num_pb / 2); i++)
3567 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpktsize);
3568 /* fall through - configure remaining packet buffers */
3569 case (PBA_STRATEGY_EQUAL):
3570 /* Divide the remaining Rx packet buffer evenly among the TCs */
3571 rxpktsize = (pbsize / (num_pb - i)) << IXGBE_RXPBSIZE_SHIFT;
3572 for (; i < num_pb; i++)
3573 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpktsize);
3580 * Setup Tx packet buffer and threshold equally for all TCs
3581 * TXPBTHRESH register is set in K so divide by 1024 and subtract
3582 * 10 since the largest packet we support is just over 9K.
3584 txpktsize = IXGBE_TXPBSIZE_MAX / num_pb;
3585 txpbthresh = (txpktsize / 1024) - IXGBE_TXPKT_SIZE_MAX;
3586 for (i = 0; i < num_pb; i++) {
3587 IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), txpktsize);
3588 IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), txpbthresh);
3591 /* Clear unused TCs, if any, to zero buffer size*/
3592 for (; i < IXGBE_MAX_PB; i++) {
3593 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), 0);
3594 IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), 0);
3595 IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), 0);
3600 * ixgbe_calculate_checksum - Calculate checksum for buffer
3601 * @buffer: pointer to EEPROM
3602 * @length: size of EEPROM to calculate a checksum for
3604 * Calculates the checksum for some buffer on a specified length. The
3605 * checksum calculated is returned.
3607 u8 ixgbe_calculate_checksum(u8 *buffer, u32 length)
3615 for (i = 0; i < length; i++)
3618 return (u8) (0 - sum);
3622 * ixgbe_hic_unlocked - Issue command to manageability block unlocked
3623 * @hw: pointer to the HW structure
3624 * @buffer: command to write and where the return status will be placed
3625 * @length: length of buffer, must be multiple of 4 bytes
3626 * @timeout: time in ms to wait for command completion
3628 * Communicates with the manageability block. On success return 0
3629 * else returns semaphore error when encountering an error acquiring
3630 * semaphore or IXGBE_ERR_HOST_INTERFACE_COMMAND when command fails.
3632 * This function assumes that the IXGBE_GSSR_SW_MNG_SM semaphore is held
3635 s32 ixgbe_hic_unlocked(struct ixgbe_hw *hw, u32 *buffer, u32 length,
3641 if (!length || length > IXGBE_HI_MAX_BLOCK_BYTE_LENGTH) {
3642 hw_dbg(hw, "Buffer length failure buffersize-%d.\n", length);
3643 return IXGBE_ERR_HOST_INTERFACE_COMMAND;
3646 /* Set bit 9 of FWSTS clearing FW reset indication */
3647 fwsts = IXGBE_READ_REG(hw, IXGBE_FWSTS);
3648 IXGBE_WRITE_REG(hw, IXGBE_FWSTS, fwsts | IXGBE_FWSTS_FWRI);
3650 /* Check that the host interface is enabled. */
3651 hicr = IXGBE_READ_REG(hw, IXGBE_HICR);
3652 if (!(hicr & IXGBE_HICR_EN)) {
3653 hw_dbg(hw, "IXGBE_HOST_EN bit disabled.\n");
3654 return IXGBE_ERR_HOST_INTERFACE_COMMAND;
3657 /* Calculate length in DWORDs. We must be DWORD aligned */
3658 if (length % sizeof(u32)) {
3659 hw_dbg(hw, "Buffer length failure, not aligned to dword");
3660 return IXGBE_ERR_INVALID_ARGUMENT;
3663 dword_len = length >> 2;
3665 /* The device driver writes the relevant command block
3666 * into the ram area.
3668 for (i = 0; i < dword_len; i++)
3669 IXGBE_WRITE_REG_ARRAY(hw, IXGBE_FLEX_MNG,
3670 i, cpu_to_le32(buffer[i]));
3672 /* Setting this bit tells the ARC that a new command is pending. */
3673 IXGBE_WRITE_REG(hw, IXGBE_HICR, hicr | IXGBE_HICR_C);
3675 for (i = 0; i < timeout; i++) {
3676 hicr = IXGBE_READ_REG(hw, IXGBE_HICR);
3677 if (!(hicr & IXGBE_HICR_C))
3679 usleep_range(1000, 2000);
3682 /* Check command successful completion. */
3683 if ((timeout && i == timeout) ||
3684 !(IXGBE_READ_REG(hw, IXGBE_HICR) & IXGBE_HICR_SV))
3685 return IXGBE_ERR_HOST_INTERFACE_COMMAND;
3691 * ixgbe_host_interface_command - Issue command to manageability block
3692 * @hw: pointer to the HW structure
3693 * @buffer: contains the command to write and where the return status will
3695 * @length: length of buffer, must be multiple of 4 bytes
3696 * @timeout: time in ms to wait for command completion
3697 * @return_data: read and return data from the buffer (true) or not (false)
3698 * Needed because FW structures are big endian and decoding of
3699 * these fields can be 8 bit or 16 bit based on command. Decoding
3700 * is not easily understood without making a table of commands.
3701 * So we will leave this up to the caller to read back the data
3704 * Communicates with the manageability block. On success return 0
3705 * else return IXGBE_ERR_HOST_INTERFACE_COMMAND.
3707 s32 ixgbe_host_interface_command(struct ixgbe_hw *hw, void *buffer,
3708 u32 length, u32 timeout,
3711 u32 hdr_size = sizeof(struct ixgbe_hic_hdr);
3713 struct ixgbe_hic_hdr hdr;
3716 u16 buf_len, dword_len;
3720 if (!length || length > IXGBE_HI_MAX_BLOCK_BYTE_LENGTH) {
3721 hw_dbg(hw, "Buffer length failure buffersize-%d.\n", length);
3722 return IXGBE_ERR_HOST_INTERFACE_COMMAND;
3724 /* Take management host interface semaphore */
3725 status = hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_SW_MNG_SM);
3729 status = ixgbe_hic_unlocked(hw, buffer, length, timeout);
3736 /* Calculate length in DWORDs */
3737 dword_len = hdr_size >> 2;
3739 /* first pull in the header so we know the buffer length */
3740 for (bi = 0; bi < dword_len; bi++) {
3741 bp->u32arr[bi] = IXGBE_READ_REG_ARRAY(hw, IXGBE_FLEX_MNG, bi);
3742 le32_to_cpus(&bp->u32arr[bi]);
3745 /* If there is any thing in data position pull it in */
3746 buf_len = bp->hdr.buf_len;
3750 if (length < round_up(buf_len, 4) + hdr_size) {
3751 hw_dbg(hw, "Buffer not large enough for reply message.\n");
3752 status = IXGBE_ERR_HOST_INTERFACE_COMMAND;
3756 /* Calculate length in DWORDs, add 3 for odd lengths */
3757 dword_len = (buf_len + 3) >> 2;
3759 /* Pull in the rest of the buffer (bi is where we left off) */
3760 for (; bi <= dword_len; bi++) {
3761 bp->u32arr[bi] = IXGBE_READ_REG_ARRAY(hw, IXGBE_FLEX_MNG, bi);
3762 le32_to_cpus(&bp->u32arr[bi]);
3766 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_SW_MNG_SM);
3772 * ixgbe_set_fw_drv_ver_generic - Sends driver version to firmware
3773 * @hw: pointer to the HW structure
3774 * @maj: driver version major number
3775 * @min: driver version minor number
3776 * @build: driver version build number
3777 * @sub: driver version sub build number
3778 * @len: length of driver_ver string
3779 * @driver_ver: driver string
3781 * Sends driver version number to firmware through the manageability
3782 * block. On success return 0
3783 * else returns IXGBE_ERR_SWFW_SYNC when encountering an error acquiring
3784 * semaphore or IXGBE_ERR_HOST_INTERFACE_COMMAND when command fails.
3786 s32 ixgbe_set_fw_drv_ver_generic(struct ixgbe_hw *hw, u8 maj, u8 min,
3787 u8 build, u8 sub, __always_unused u16 len,
3788 __always_unused const char *driver_ver)
3790 struct ixgbe_hic_drv_info fw_cmd;
3794 fw_cmd.hdr.cmd = FW_CEM_CMD_DRIVER_INFO;
3795 fw_cmd.hdr.buf_len = FW_CEM_CMD_DRIVER_INFO_LEN;
3796 fw_cmd.hdr.cmd_or_resp.cmd_resv = FW_CEM_CMD_RESERVED;
3797 fw_cmd.port_num = hw->bus.func;
3798 fw_cmd.ver_maj = maj;
3799 fw_cmd.ver_min = min;
3800 fw_cmd.ver_build = build;
3801 fw_cmd.ver_sub = sub;
3802 fw_cmd.hdr.checksum = 0;
3803 fw_cmd.hdr.checksum = ixgbe_calculate_checksum((u8 *)&fw_cmd,
3804 (FW_CEM_HDR_LEN + fw_cmd.hdr.buf_len));
3808 for (i = 0; i <= FW_CEM_MAX_RETRIES; i++) {
3809 ret_val = ixgbe_host_interface_command(hw, &fw_cmd,
3811 IXGBE_HI_COMMAND_TIMEOUT,
3816 if (fw_cmd.hdr.cmd_or_resp.ret_status ==
3817 FW_CEM_RESP_STATUS_SUCCESS)
3820 ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND;
3829 * ixgbe_clear_tx_pending - Clear pending TX work from the PCIe fifo
3830 * @hw: pointer to the hardware structure
3832 * The 82599 and x540 MACs can experience issues if TX work is still pending
3833 * when a reset occurs. This function prevents this by flushing the PCIe
3834 * buffers on the system.
3836 void ixgbe_clear_tx_pending(struct ixgbe_hw *hw)
3838 u32 gcr_ext, hlreg0, i, poll;
3842 * If double reset is not requested then all transactions should
3843 * already be clear and as such there is no work to do
3845 if (!(hw->mac.flags & IXGBE_FLAGS_DOUBLE_RESET_REQUIRED))
3849 * Set loopback enable to prevent any transmits from being sent
3850 * should the link come up. This assumes that the RXCTRL.RXEN bit
3851 * has already been cleared.
3853 hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0);
3854 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0 | IXGBE_HLREG0_LPBK);
3856 /* wait for a last completion before clearing buffers */
3857 IXGBE_WRITE_FLUSH(hw);
3858 usleep_range(3000, 6000);
3860 /* Before proceeding, make sure that the PCIe block does not have
3861 * transactions pending.
3863 poll = ixgbe_pcie_timeout_poll(hw);
3864 for (i = 0; i < poll; i++) {
3865 usleep_range(100, 200);
3866 value = ixgbe_read_pci_cfg_word(hw, IXGBE_PCI_DEVICE_STATUS);
3867 if (ixgbe_removed(hw->hw_addr))
3869 if (!(value & IXGBE_PCI_DEVICE_STATUS_TRANSACTION_PENDING))
3873 /* initiate cleaning flow for buffers in the PCIe transaction layer */
3874 gcr_ext = IXGBE_READ_REG(hw, IXGBE_GCR_EXT);
3875 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT,
3876 gcr_ext | IXGBE_GCR_EXT_BUFFERS_CLEAR);
3878 /* Flush all writes and allow 20usec for all transactions to clear */
3879 IXGBE_WRITE_FLUSH(hw);
3882 /* restore previous register values */
3883 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, gcr_ext);
3884 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0);
3887 static const u8 ixgbe_emc_temp_data[4] = {
3888 IXGBE_EMC_INTERNAL_DATA,
3889 IXGBE_EMC_DIODE1_DATA,
3890 IXGBE_EMC_DIODE2_DATA,
3891 IXGBE_EMC_DIODE3_DATA
3893 static const u8 ixgbe_emc_therm_limit[4] = {
3894 IXGBE_EMC_INTERNAL_THERM_LIMIT,
3895 IXGBE_EMC_DIODE1_THERM_LIMIT,
3896 IXGBE_EMC_DIODE2_THERM_LIMIT,
3897 IXGBE_EMC_DIODE3_THERM_LIMIT
3901 * ixgbe_get_ets_data - Extracts the ETS bit data
3902 * @hw: pointer to hardware structure
3903 * @ets_cfg: extected ETS data
3904 * @ets_offset: offset of ETS data
3906 * Returns error code.
3908 static s32 ixgbe_get_ets_data(struct ixgbe_hw *hw, u16 *ets_cfg,
3913 status = hw->eeprom.ops.read(hw, IXGBE_ETS_CFG, ets_offset);
3917 if ((*ets_offset == 0x0000) || (*ets_offset == 0xFFFF))
3918 return IXGBE_NOT_IMPLEMENTED;
3920 status = hw->eeprom.ops.read(hw, *ets_offset, ets_cfg);
3924 if ((*ets_cfg & IXGBE_ETS_TYPE_MASK) != IXGBE_ETS_TYPE_EMC_SHIFTED)
3925 return IXGBE_NOT_IMPLEMENTED;
3931 * ixgbe_get_thermal_sensor_data - Gathers thermal sensor data
3932 * @hw: pointer to hardware structure
3934 * Returns the thermal sensor data structure
3936 s32 ixgbe_get_thermal_sensor_data_generic(struct ixgbe_hw *hw)
3944 struct ixgbe_thermal_sensor_data *data = &hw->mac.thermal_sensor_data;
3946 /* Only support thermal sensors attached to physical port 0 */
3947 if ((IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1))
3948 return IXGBE_NOT_IMPLEMENTED;
3950 status = ixgbe_get_ets_data(hw, &ets_cfg, &ets_offset);
3954 num_sensors = (ets_cfg & IXGBE_ETS_NUM_SENSORS_MASK);
3955 if (num_sensors > IXGBE_MAX_SENSORS)
3956 num_sensors = IXGBE_MAX_SENSORS;
3958 for (i = 0; i < num_sensors; i++) {
3962 status = hw->eeprom.ops.read(hw, (ets_offset + 1 + i),
3967 sensor_index = ((ets_sensor & IXGBE_ETS_DATA_INDEX_MASK) >>
3968 IXGBE_ETS_DATA_INDEX_SHIFT);
3969 sensor_location = ((ets_sensor & IXGBE_ETS_DATA_LOC_MASK) >>
3970 IXGBE_ETS_DATA_LOC_SHIFT);
3972 if (sensor_location != 0) {
3973 status = hw->phy.ops.read_i2c_byte(hw,
3974 ixgbe_emc_temp_data[sensor_index],
3975 IXGBE_I2C_THERMAL_SENSOR_ADDR,
3976 &data->sensor[i].temp);
3986 * ixgbe_init_thermal_sensor_thresh_generic - Inits thermal sensor thresholds
3987 * @hw: pointer to hardware structure
3989 * Inits the thermal sensor thresholds according to the NVM map
3990 * and save off the threshold and location values into mac.thermal_sensor_data
3992 s32 ixgbe_init_thermal_sensor_thresh_generic(struct ixgbe_hw *hw)
3998 u8 low_thresh_delta;
4002 struct ixgbe_thermal_sensor_data *data = &hw->mac.thermal_sensor_data;
4004 memset(data, 0, sizeof(struct ixgbe_thermal_sensor_data));
4006 /* Only support thermal sensors attached to physical port 0 */
4007 if ((IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1))
4008 return IXGBE_NOT_IMPLEMENTED;
4010 status = ixgbe_get_ets_data(hw, &ets_cfg, &ets_offset);
4014 low_thresh_delta = ((ets_cfg & IXGBE_ETS_LTHRES_DELTA_MASK) >>
4015 IXGBE_ETS_LTHRES_DELTA_SHIFT);
4016 num_sensors = (ets_cfg & IXGBE_ETS_NUM_SENSORS_MASK);
4017 if (num_sensors > IXGBE_MAX_SENSORS)
4018 num_sensors = IXGBE_MAX_SENSORS;
4020 for (i = 0; i < num_sensors; i++) {
4024 if (hw->eeprom.ops.read(hw, ets_offset + 1 + i, &ets_sensor)) {
4025 hw_err(hw, "eeprom read at offset %d failed\n",
4026 ets_offset + 1 + i);
4029 sensor_index = ((ets_sensor & IXGBE_ETS_DATA_INDEX_MASK) >>
4030 IXGBE_ETS_DATA_INDEX_SHIFT);
4031 sensor_location = ((ets_sensor & IXGBE_ETS_DATA_LOC_MASK) >>
4032 IXGBE_ETS_DATA_LOC_SHIFT);
4033 therm_limit = ets_sensor & IXGBE_ETS_DATA_HTHRESH_MASK;
4035 hw->phy.ops.write_i2c_byte(hw,
4036 ixgbe_emc_therm_limit[sensor_index],
4037 IXGBE_I2C_THERMAL_SENSOR_ADDR, therm_limit);
4039 if (sensor_location == 0)
4042 data->sensor[i].location = sensor_location;
4043 data->sensor[i].caution_thresh = therm_limit;
4044 data->sensor[i].max_op_thresh = therm_limit - low_thresh_delta;
4050 void ixgbe_disable_rx_generic(struct ixgbe_hw *hw)
4054 rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
4055 if (rxctrl & IXGBE_RXCTRL_RXEN) {
4056 if (hw->mac.type != ixgbe_mac_82598EB) {
4059 pfdtxgswc = IXGBE_READ_REG(hw, IXGBE_PFDTXGSWC);
4060 if (pfdtxgswc & IXGBE_PFDTXGSWC_VT_LBEN) {
4061 pfdtxgswc &= ~IXGBE_PFDTXGSWC_VT_LBEN;
4062 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, pfdtxgswc);
4063 hw->mac.set_lben = true;
4065 hw->mac.set_lben = false;
4068 rxctrl &= ~IXGBE_RXCTRL_RXEN;
4069 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl);
4073 void ixgbe_enable_rx_generic(struct ixgbe_hw *hw)
4077 rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
4078 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, (rxctrl | IXGBE_RXCTRL_RXEN));
4080 if (hw->mac.type != ixgbe_mac_82598EB) {
4081 if (hw->mac.set_lben) {
4084 pfdtxgswc = IXGBE_READ_REG(hw, IXGBE_PFDTXGSWC);
4085 pfdtxgswc |= IXGBE_PFDTXGSWC_VT_LBEN;
4086 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, pfdtxgswc);
4087 hw->mac.set_lben = false;
4092 /** ixgbe_mng_present - returns true when management capability is present
4093 * @hw: pointer to hardware structure
4095 bool ixgbe_mng_present(struct ixgbe_hw *hw)
4099 if (hw->mac.type < ixgbe_mac_82599EB)
4102 fwsm = IXGBE_READ_REG(hw, IXGBE_FWSM(hw));
4103 fwsm &= IXGBE_FWSM_MODE_MASK;
4104 return fwsm == IXGBE_FWSM_FW_MODE_PT;
4108 * ixgbe_setup_mac_link_multispeed_fiber - Set MAC link speed
4109 * @hw: pointer to hardware structure
4110 * @speed: new link speed
4111 * @autoneg_wait_to_complete: true when waiting for completion is needed
4113 * Set the link speed in the MAC and/or PHY register and restarts link.
4115 s32 ixgbe_setup_mac_link_multispeed_fiber(struct ixgbe_hw *hw,
4116 ixgbe_link_speed speed,
4117 bool autoneg_wait_to_complete)
4119 ixgbe_link_speed link_speed = IXGBE_LINK_SPEED_UNKNOWN;
4120 ixgbe_link_speed highest_link_speed = IXGBE_LINK_SPEED_UNKNOWN;
4124 bool autoneg, link_up = false;
4126 /* Mask off requested but non-supported speeds */
4127 status = hw->mac.ops.get_link_capabilities(hw, &link_speed, &autoneg);
4131 speed &= link_speed;
4133 /* Try each speed one by one, highest priority first. We do this in
4134 * software because 10Gb fiber doesn't support speed autonegotiation.
4136 if (speed & IXGBE_LINK_SPEED_10GB_FULL) {
4138 highest_link_speed = IXGBE_LINK_SPEED_10GB_FULL;
4140 /* Set the module link speed */
4141 switch (hw->phy.media_type) {
4142 case ixgbe_media_type_fiber:
4143 hw->mac.ops.set_rate_select_speed(hw,
4144 IXGBE_LINK_SPEED_10GB_FULL);
4146 case ixgbe_media_type_fiber_qsfp:
4147 /* QSFP module automatically detects MAC link speed */
4150 hw_dbg(hw, "Unexpected media type\n");
4154 /* Allow module to change analog characteristics (1G->10G) */
4157 status = hw->mac.ops.setup_mac_link(hw,
4158 IXGBE_LINK_SPEED_10GB_FULL,
4159 autoneg_wait_to_complete);
4163 /* Flap the Tx laser if it has not already been done */
4164 if (hw->mac.ops.flap_tx_laser)
4165 hw->mac.ops.flap_tx_laser(hw);
4167 /* Wait for the controller to acquire link. Per IEEE 802.3ap,
4168 * Section 73.10.2, we may have to wait up to 500ms if KR is
4169 * attempted. 82599 uses the same timing for 10g SFI.
4171 for (i = 0; i < 5; i++) {
4172 /* Wait for the link partner to also set speed */
4175 /* If we have link, just jump out */
4176 status = hw->mac.ops.check_link(hw, &link_speed,
4186 if (speed & IXGBE_LINK_SPEED_1GB_FULL) {
4188 if (highest_link_speed == IXGBE_LINK_SPEED_UNKNOWN)
4189 highest_link_speed = IXGBE_LINK_SPEED_1GB_FULL;
4191 /* Set the module link speed */
4192 switch (hw->phy.media_type) {
4193 case ixgbe_media_type_fiber:
4194 hw->mac.ops.set_rate_select_speed(hw,
4195 IXGBE_LINK_SPEED_1GB_FULL);
4197 case ixgbe_media_type_fiber_qsfp:
4198 /* QSFP module automatically detects link speed */
4201 hw_dbg(hw, "Unexpected media type\n");
4205 /* Allow module to change analog characteristics (10G->1G) */
4208 status = hw->mac.ops.setup_mac_link(hw,
4209 IXGBE_LINK_SPEED_1GB_FULL,
4210 autoneg_wait_to_complete);
4214 /* Flap the Tx laser if it has not already been done */
4215 if (hw->mac.ops.flap_tx_laser)
4216 hw->mac.ops.flap_tx_laser(hw);
4218 /* Wait for the link partner to also set speed */
4221 /* If we have link, just jump out */
4222 status = hw->mac.ops.check_link(hw, &link_speed, &link_up,
4231 /* We didn't get link. Configure back to the highest speed we tried,
4232 * (if there was more than one). We call ourselves back with just the
4233 * single highest speed that the user requested.
4236 status = ixgbe_setup_mac_link_multispeed_fiber(hw,
4238 autoneg_wait_to_complete);
4241 /* Set autoneg_advertised value based on input link speed */
4242 hw->phy.autoneg_advertised = 0;
4244 if (speed & IXGBE_LINK_SPEED_10GB_FULL)
4245 hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_10GB_FULL;
4247 if (speed & IXGBE_LINK_SPEED_1GB_FULL)
4248 hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_1GB_FULL;
4254 * ixgbe_set_soft_rate_select_speed - Set module link speed
4255 * @hw: pointer to hardware structure
4256 * @speed: link speed to set
4258 * Set module link speed via the soft rate select.
4260 void ixgbe_set_soft_rate_select_speed(struct ixgbe_hw *hw,
4261 ixgbe_link_speed speed)
4267 case IXGBE_LINK_SPEED_10GB_FULL:
4268 /* one bit mask same as setting on */
4269 rs = IXGBE_SFF_SOFT_RS_SELECT_10G;
4271 case IXGBE_LINK_SPEED_1GB_FULL:
4272 rs = IXGBE_SFF_SOFT_RS_SELECT_1G;
4275 hw_dbg(hw, "Invalid fixed module speed\n");
4280 status = hw->phy.ops.read_i2c_byte(hw, IXGBE_SFF_SFF_8472_OSCB,
4281 IXGBE_I2C_EEPROM_DEV_ADDR2,
4284 hw_dbg(hw, "Failed to read Rx Rate Select RS0\n");
4288 eeprom_data = (eeprom_data & ~IXGBE_SFF_SOFT_RS_SELECT_MASK) | rs;
4290 status = hw->phy.ops.write_i2c_byte(hw, IXGBE_SFF_SFF_8472_OSCB,
4291 IXGBE_I2C_EEPROM_DEV_ADDR2,
4294 hw_dbg(hw, "Failed to write Rx Rate Select RS0\n");
4299 status = hw->phy.ops.read_i2c_byte(hw, IXGBE_SFF_SFF_8472_ESCB,
4300 IXGBE_I2C_EEPROM_DEV_ADDR2,
4303 hw_dbg(hw, "Failed to read Rx Rate Select RS1\n");
4307 eeprom_data = (eeprom_data & ~IXGBE_SFF_SOFT_RS_SELECT_MASK) | rs;
4309 status = hw->phy.ops.write_i2c_byte(hw, IXGBE_SFF_SFF_8472_ESCB,
4310 IXGBE_I2C_EEPROM_DEV_ADDR2,
4313 hw_dbg(hw, "Failed to write Rx Rate Select RS1\n");