1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 1999 - 2018 Intel Corporation. */
5 #include <linux/delay.h>
6 #include <linux/sched.h>
7 #include <linux/netdevice.h>
10 #include "ixgbe_common.h"
11 #include "ixgbe_phy.h"
13 static s32 ixgbe_acquire_eeprom(struct ixgbe_hw *hw);
14 static s32 ixgbe_get_eeprom_semaphore(struct ixgbe_hw *hw);
15 static void ixgbe_release_eeprom_semaphore(struct ixgbe_hw *hw);
16 static s32 ixgbe_ready_eeprom(struct ixgbe_hw *hw);
17 static void ixgbe_standby_eeprom(struct ixgbe_hw *hw);
18 static void ixgbe_shift_out_eeprom_bits(struct ixgbe_hw *hw, u16 data,
20 static u16 ixgbe_shift_in_eeprom_bits(struct ixgbe_hw *hw, u16 count);
21 static void ixgbe_raise_eeprom_clk(struct ixgbe_hw *hw, u32 *eec);
22 static void ixgbe_lower_eeprom_clk(struct ixgbe_hw *hw, u32 *eec);
23 static void ixgbe_release_eeprom(struct ixgbe_hw *hw);
25 static s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr);
26 static s32 ixgbe_poll_eerd_eewr_done(struct ixgbe_hw *hw, u32 ee_reg);
27 static s32 ixgbe_read_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset,
28 u16 words, u16 *data);
29 static s32 ixgbe_write_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset,
30 u16 words, u16 *data);
31 static s32 ixgbe_detect_eeprom_page_size_generic(struct ixgbe_hw *hw,
33 static s32 ixgbe_disable_pcie_primary(struct ixgbe_hw *hw);
35 /* Base table for registers values that change by MAC */
36 const u32 ixgbe_mvals_8259X[IXGBE_MVALS_IDX_LIMIT] = {
37 IXGBE_MVALS_INIT(8259X)
41 * ixgbe_device_supports_autoneg_fc - Check if phy supports autoneg flow
43 * @hw: pointer to hardware structure
45 * There are several phys that do not support autoneg flow control. This
46 * function check the device id to see if the associated phy supports
47 * autoneg flow control.
49 bool ixgbe_device_supports_autoneg_fc(struct ixgbe_hw *hw)
51 bool supported = false;
52 ixgbe_link_speed speed;
55 switch (hw->phy.media_type) {
56 case ixgbe_media_type_fiber:
57 /* flow control autoneg black list */
58 switch (hw->device_id) {
59 case IXGBE_DEV_ID_X550EM_A_SFP:
60 case IXGBE_DEV_ID_X550EM_A_SFP_N:
64 hw->mac.ops.check_link(hw, &speed, &link_up, false);
65 /* if link is down, assume supported */
67 supported = speed == IXGBE_LINK_SPEED_1GB_FULL;
73 case ixgbe_media_type_backplane:
74 if (hw->device_id == IXGBE_DEV_ID_X550EM_X_XFI)
79 case ixgbe_media_type_copper:
80 /* only some copper devices support flow control autoneg */
81 switch (hw->device_id) {
82 case IXGBE_DEV_ID_82599_T3_LOM:
83 case IXGBE_DEV_ID_X540T:
84 case IXGBE_DEV_ID_X540T1:
85 case IXGBE_DEV_ID_X550T:
86 case IXGBE_DEV_ID_X550T1:
87 case IXGBE_DEV_ID_X550EM_X_10G_T:
88 case IXGBE_DEV_ID_X550EM_A_10G_T:
89 case IXGBE_DEV_ID_X550EM_A_1G_T:
90 case IXGBE_DEV_ID_X550EM_A_1G_T_L:
101 hw_dbg(hw, "Device %x does not support flow control autoneg\n",
108 * ixgbe_setup_fc_generic - Set up flow control
109 * @hw: pointer to hardware structure
111 * Called at init time to set up flow control.
113 s32 ixgbe_setup_fc_generic(struct ixgbe_hw *hw)
116 u32 reg = 0, reg_bp = 0;
121 * Validate the requested mode. Strict IEEE mode does not allow
122 * ixgbe_fc_rx_pause because it will cause us to fail at UNH.
124 if (hw->fc.strict_ieee && hw->fc.requested_mode == ixgbe_fc_rx_pause) {
125 hw_dbg(hw, "ixgbe_fc_rx_pause not valid in strict IEEE mode\n");
130 * 10gig parts do not have a word in the EEPROM to determine the
131 * default flow control setting, so we explicitly set it to full.
133 if (hw->fc.requested_mode == ixgbe_fc_default)
134 hw->fc.requested_mode = ixgbe_fc_full;
137 * Set up the 1G and 10G flow control advertisement registers so the
138 * HW will be able to do fc autoneg once the cable is plugged in. If
139 * we link at 10G, the 1G advertisement is harmless and vice versa.
141 switch (hw->phy.media_type) {
142 case ixgbe_media_type_backplane:
143 /* some MAC's need RMW protection on AUTOC */
144 ret_val = hw->mac.ops.prot_autoc_read(hw, &locked, ®_bp);
148 fallthrough; /* only backplane uses autoc */
149 case ixgbe_media_type_fiber:
150 reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANA);
153 case ixgbe_media_type_copper:
154 hw->phy.ops.read_reg(hw, MDIO_AN_ADVERTISE,
155 MDIO_MMD_AN, ®_cu);
162 * The possible values of fc.requested_mode are:
163 * 0: Flow control is completely disabled
164 * 1: Rx flow control is enabled (we can receive pause frames,
165 * but not send pause frames).
166 * 2: Tx flow control is enabled (we can send pause frames but
167 * we do not support receiving pause frames).
168 * 3: Both Rx and Tx flow control (symmetric) are enabled.
171 switch (hw->fc.requested_mode) {
173 /* Flow control completely disabled by software override. */
174 reg &= ~(IXGBE_PCS1GANA_SYM_PAUSE | IXGBE_PCS1GANA_ASM_PAUSE);
175 if (hw->phy.media_type == ixgbe_media_type_backplane)
176 reg_bp &= ~(IXGBE_AUTOC_SYM_PAUSE |
177 IXGBE_AUTOC_ASM_PAUSE);
178 else if (hw->phy.media_type == ixgbe_media_type_copper)
179 reg_cu &= ~(IXGBE_TAF_SYM_PAUSE | IXGBE_TAF_ASM_PAUSE);
181 case ixgbe_fc_tx_pause:
183 * Tx Flow control is enabled, and Rx Flow control is
184 * disabled by software override.
186 reg |= IXGBE_PCS1GANA_ASM_PAUSE;
187 reg &= ~IXGBE_PCS1GANA_SYM_PAUSE;
188 if (hw->phy.media_type == ixgbe_media_type_backplane) {
189 reg_bp |= IXGBE_AUTOC_ASM_PAUSE;
190 reg_bp &= ~IXGBE_AUTOC_SYM_PAUSE;
191 } else if (hw->phy.media_type == ixgbe_media_type_copper) {
192 reg_cu |= IXGBE_TAF_ASM_PAUSE;
193 reg_cu &= ~IXGBE_TAF_SYM_PAUSE;
196 case ixgbe_fc_rx_pause:
198 * Rx Flow control is enabled and Tx Flow control is
199 * disabled by software override. Since there really
200 * isn't a way to advertise that we are capable of RX
201 * Pause ONLY, we will advertise that we support both
202 * symmetric and asymmetric Rx PAUSE, as such we fall
203 * through to the fc_full statement. Later, we will
204 * disable the adapter's ability to send PAUSE frames.
207 /* Flow control (both Rx and Tx) is enabled by SW override. */
208 reg |= IXGBE_PCS1GANA_SYM_PAUSE | IXGBE_PCS1GANA_ASM_PAUSE;
209 if (hw->phy.media_type == ixgbe_media_type_backplane)
210 reg_bp |= IXGBE_AUTOC_SYM_PAUSE |
211 IXGBE_AUTOC_ASM_PAUSE;
212 else if (hw->phy.media_type == ixgbe_media_type_copper)
213 reg_cu |= IXGBE_TAF_SYM_PAUSE | IXGBE_TAF_ASM_PAUSE;
216 hw_dbg(hw, "Flow control param set incorrectly\n");
220 if (hw->mac.type != ixgbe_mac_X540) {
222 * Enable auto-negotiation between the MAC & PHY;
223 * the MAC will advertise clause 37 flow control.
225 IXGBE_WRITE_REG(hw, IXGBE_PCS1GANA, reg);
226 reg = IXGBE_READ_REG(hw, IXGBE_PCS1GLCTL);
228 /* Disable AN timeout */
229 if (hw->fc.strict_ieee)
230 reg &= ~IXGBE_PCS1GLCTL_AN_1G_TIMEOUT_EN;
232 IXGBE_WRITE_REG(hw, IXGBE_PCS1GLCTL, reg);
233 hw_dbg(hw, "Set up FC; PCS1GLCTL = 0x%08X\n", reg);
237 * AUTOC restart handles negotiation of 1G and 10G on backplane
238 * and copper. There is no need to set the PCS1GCTL register.
241 if (hw->phy.media_type == ixgbe_media_type_backplane) {
242 /* Need the SW/FW semaphore around AUTOC writes if 82599 and
243 * LESM is on, likewise reset_pipeline requries the lock as
244 * it also writes AUTOC.
246 ret_val = hw->mac.ops.prot_autoc_write(hw, reg_bp, locked);
250 } else if ((hw->phy.media_type == ixgbe_media_type_copper) &&
251 ixgbe_device_supports_autoneg_fc(hw)) {
252 hw->phy.ops.write_reg(hw, MDIO_AN_ADVERTISE,
253 MDIO_MMD_AN, reg_cu);
256 hw_dbg(hw, "Set up FC; IXGBE_AUTOC = 0x%08X\n", reg);
261 * ixgbe_start_hw_generic - Prepare hardware for Tx/Rx
262 * @hw: pointer to hardware structure
264 * Starts the hardware by filling the bus info structure and media type, clears
265 * all on chip counters, initializes receive address registers, multicast
266 * table, VLAN filter table, calls routine to set up link and flow control
267 * settings, and leaves transmit and receive units disabled and uninitialized
269 s32 ixgbe_start_hw_generic(struct ixgbe_hw *hw)
275 /* Set the media type */
276 hw->phy.media_type = hw->mac.ops.get_media_type(hw);
278 /* Identify the PHY */
279 hw->phy.ops.identify(hw);
281 /* Clear the VLAN filter table */
282 hw->mac.ops.clear_vfta(hw);
284 /* Clear statistics registers */
285 hw->mac.ops.clear_hw_cntrs(hw);
287 /* Set No Snoop Disable */
288 ctrl_ext = IXGBE_READ_REG(hw, IXGBE_CTRL_EXT);
289 ctrl_ext |= IXGBE_CTRL_EXT_NS_DIS;
290 IXGBE_WRITE_REG(hw, IXGBE_CTRL_EXT, ctrl_ext);
291 IXGBE_WRITE_FLUSH(hw);
293 /* Setup flow control if method for doing so */
294 if (hw->mac.ops.setup_fc) {
295 ret_val = hw->mac.ops.setup_fc(hw);
300 /* Cashe bit indicating need for crosstalk fix */
301 switch (hw->mac.type) {
302 case ixgbe_mac_82599EB:
303 case ixgbe_mac_X550EM_x:
304 case ixgbe_mac_x550em_a:
305 hw->mac.ops.get_device_caps(hw, &device_caps);
306 if (device_caps & IXGBE_DEVICE_CAPS_NO_CROSSTALK_WR)
307 hw->need_crosstalk_fix = false;
309 hw->need_crosstalk_fix = true;
312 hw->need_crosstalk_fix = false;
316 /* Clear adapter stopped flag */
317 hw->adapter_stopped = false;
323 * ixgbe_start_hw_gen2 - Init sequence for common device family
324 * @hw: pointer to hw structure
326 * Performs the init sequence common to the second generation
328 * Devices in the second generation:
332 s32 ixgbe_start_hw_gen2(struct ixgbe_hw *hw)
336 /* Clear the rate limiters */
337 for (i = 0; i < hw->mac.max_tx_queues; i++) {
338 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, i);
339 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, 0);
341 IXGBE_WRITE_FLUSH(hw);
347 * ixgbe_init_hw_generic - Generic hardware initialization
348 * @hw: pointer to hardware structure
350 * Initialize the hardware by resetting the hardware, filling the bus info
351 * structure and media type, clears all on chip counters, initializes receive
352 * address registers, multicast table, VLAN filter table, calls routine to set
353 * up link and flow control settings, and leaves transmit and receive units
354 * disabled and uninitialized
356 s32 ixgbe_init_hw_generic(struct ixgbe_hw *hw)
360 /* Reset the hardware */
361 status = hw->mac.ops.reset_hw(hw);
365 status = hw->mac.ops.start_hw(hw);
368 /* Initialize the LED link active for LED blink support */
369 if (hw->mac.ops.init_led_link_act)
370 hw->mac.ops.init_led_link_act(hw);
376 * ixgbe_clear_hw_cntrs_generic - Generic clear hardware counters
377 * @hw: pointer to hardware structure
379 * Clears all hardware statistics counters by reading them from the hardware
380 * Statistics counters are clear on read.
382 s32 ixgbe_clear_hw_cntrs_generic(struct ixgbe_hw *hw)
386 IXGBE_READ_REG(hw, IXGBE_CRCERRS);
387 IXGBE_READ_REG(hw, IXGBE_ILLERRC);
388 IXGBE_READ_REG(hw, IXGBE_ERRBC);
389 IXGBE_READ_REG(hw, IXGBE_MSPDC);
390 for (i = 0; i < 8; i++)
391 IXGBE_READ_REG(hw, IXGBE_MPC(i));
393 IXGBE_READ_REG(hw, IXGBE_MLFC);
394 IXGBE_READ_REG(hw, IXGBE_MRFC);
395 IXGBE_READ_REG(hw, IXGBE_RLEC);
396 IXGBE_READ_REG(hw, IXGBE_LXONTXC);
397 IXGBE_READ_REG(hw, IXGBE_LXOFFTXC);
398 if (hw->mac.type >= ixgbe_mac_82599EB) {
399 IXGBE_READ_REG(hw, IXGBE_LXONRXCNT);
400 IXGBE_READ_REG(hw, IXGBE_LXOFFRXCNT);
402 IXGBE_READ_REG(hw, IXGBE_LXONRXC);
403 IXGBE_READ_REG(hw, IXGBE_LXOFFRXC);
406 for (i = 0; i < 8; i++) {
407 IXGBE_READ_REG(hw, IXGBE_PXONTXC(i));
408 IXGBE_READ_REG(hw, IXGBE_PXOFFTXC(i));
409 if (hw->mac.type >= ixgbe_mac_82599EB) {
410 IXGBE_READ_REG(hw, IXGBE_PXONRXCNT(i));
411 IXGBE_READ_REG(hw, IXGBE_PXOFFRXCNT(i));
413 IXGBE_READ_REG(hw, IXGBE_PXONRXC(i));
414 IXGBE_READ_REG(hw, IXGBE_PXOFFRXC(i));
417 if (hw->mac.type >= ixgbe_mac_82599EB)
418 for (i = 0; i < 8; i++)
419 IXGBE_READ_REG(hw, IXGBE_PXON2OFFCNT(i));
420 IXGBE_READ_REG(hw, IXGBE_PRC64);
421 IXGBE_READ_REG(hw, IXGBE_PRC127);
422 IXGBE_READ_REG(hw, IXGBE_PRC255);
423 IXGBE_READ_REG(hw, IXGBE_PRC511);
424 IXGBE_READ_REG(hw, IXGBE_PRC1023);
425 IXGBE_READ_REG(hw, IXGBE_PRC1522);
426 IXGBE_READ_REG(hw, IXGBE_GPRC);
427 IXGBE_READ_REG(hw, IXGBE_BPRC);
428 IXGBE_READ_REG(hw, IXGBE_MPRC);
429 IXGBE_READ_REG(hw, IXGBE_GPTC);
430 IXGBE_READ_REG(hw, IXGBE_GORCL);
431 IXGBE_READ_REG(hw, IXGBE_GORCH);
432 IXGBE_READ_REG(hw, IXGBE_GOTCL);
433 IXGBE_READ_REG(hw, IXGBE_GOTCH);
434 if (hw->mac.type == ixgbe_mac_82598EB)
435 for (i = 0; i < 8; i++)
436 IXGBE_READ_REG(hw, IXGBE_RNBC(i));
437 IXGBE_READ_REG(hw, IXGBE_RUC);
438 IXGBE_READ_REG(hw, IXGBE_RFC);
439 IXGBE_READ_REG(hw, IXGBE_ROC);
440 IXGBE_READ_REG(hw, IXGBE_RJC);
441 IXGBE_READ_REG(hw, IXGBE_MNGPRC);
442 IXGBE_READ_REG(hw, IXGBE_MNGPDC);
443 IXGBE_READ_REG(hw, IXGBE_MNGPTC);
444 IXGBE_READ_REG(hw, IXGBE_TORL);
445 IXGBE_READ_REG(hw, IXGBE_TORH);
446 IXGBE_READ_REG(hw, IXGBE_TPR);
447 IXGBE_READ_REG(hw, IXGBE_TPT);
448 IXGBE_READ_REG(hw, IXGBE_PTC64);
449 IXGBE_READ_REG(hw, IXGBE_PTC127);
450 IXGBE_READ_REG(hw, IXGBE_PTC255);
451 IXGBE_READ_REG(hw, IXGBE_PTC511);
452 IXGBE_READ_REG(hw, IXGBE_PTC1023);
453 IXGBE_READ_REG(hw, IXGBE_PTC1522);
454 IXGBE_READ_REG(hw, IXGBE_MPTC);
455 IXGBE_READ_REG(hw, IXGBE_BPTC);
456 for (i = 0; i < 16; i++) {
457 IXGBE_READ_REG(hw, IXGBE_QPRC(i));
458 IXGBE_READ_REG(hw, IXGBE_QPTC(i));
459 if (hw->mac.type >= ixgbe_mac_82599EB) {
460 IXGBE_READ_REG(hw, IXGBE_QBRC_L(i));
461 IXGBE_READ_REG(hw, IXGBE_QBRC_H(i));
462 IXGBE_READ_REG(hw, IXGBE_QBTC_L(i));
463 IXGBE_READ_REG(hw, IXGBE_QBTC_H(i));
464 IXGBE_READ_REG(hw, IXGBE_QPRDC(i));
466 IXGBE_READ_REG(hw, IXGBE_QBRC(i));
467 IXGBE_READ_REG(hw, IXGBE_QBTC(i));
471 if (hw->mac.type == ixgbe_mac_X550 || hw->mac.type == ixgbe_mac_X540) {
473 hw->phy.ops.identify(hw);
474 hw->phy.ops.read_reg(hw, IXGBE_PCRC8ECL, MDIO_MMD_PCS, &i);
475 hw->phy.ops.read_reg(hw, IXGBE_PCRC8ECH, MDIO_MMD_PCS, &i);
476 hw->phy.ops.read_reg(hw, IXGBE_LDPCECL, MDIO_MMD_PCS, &i);
477 hw->phy.ops.read_reg(hw, IXGBE_LDPCECH, MDIO_MMD_PCS, &i);
484 * ixgbe_read_pba_string_generic - Reads part number string from EEPROM
485 * @hw: pointer to hardware structure
486 * @pba_num: stores the part number string from the EEPROM
487 * @pba_num_size: part number string buffer length
489 * Reads the part number string from the EEPROM.
491 s32 ixgbe_read_pba_string_generic(struct ixgbe_hw *hw, u8 *pba_num,
500 if (pba_num == NULL) {
501 hw_dbg(hw, "PBA string buffer was null\n");
505 ret_val = hw->eeprom.ops.read(hw, IXGBE_PBANUM0_PTR, &data);
507 hw_dbg(hw, "NVM Read Error\n");
511 ret_val = hw->eeprom.ops.read(hw, IXGBE_PBANUM1_PTR, &pba_ptr);
513 hw_dbg(hw, "NVM Read Error\n");
518 * if data is not ptr guard the PBA must be in legacy format which
519 * means pba_ptr is actually our second data word for the PBA number
520 * and we can decode it into an ascii string
522 if (data != IXGBE_PBANUM_PTR_GUARD) {
523 hw_dbg(hw, "NVM PBA number is not stored as string\n");
525 /* we will need 11 characters to store the PBA */
526 if (pba_num_size < 11) {
527 hw_dbg(hw, "PBA string buffer too small\n");
531 /* extract hex string from data and pba_ptr */
532 pba_num[0] = (data >> 12) & 0xF;
533 pba_num[1] = (data >> 8) & 0xF;
534 pba_num[2] = (data >> 4) & 0xF;
535 pba_num[3] = data & 0xF;
536 pba_num[4] = (pba_ptr >> 12) & 0xF;
537 pba_num[5] = (pba_ptr >> 8) & 0xF;
540 pba_num[8] = (pba_ptr >> 4) & 0xF;
541 pba_num[9] = pba_ptr & 0xF;
543 /* put a null character on the end of our string */
546 /* switch all the data but the '-' to hex char */
547 for (offset = 0; offset < 10; offset++) {
548 if (pba_num[offset] < 0xA)
549 pba_num[offset] += '0';
550 else if (pba_num[offset] < 0x10)
551 pba_num[offset] += 'A' - 0xA;
557 ret_val = hw->eeprom.ops.read(hw, pba_ptr, &length);
559 hw_dbg(hw, "NVM Read Error\n");
563 if (length == 0xFFFF || length == 0) {
564 hw_dbg(hw, "NVM PBA number section invalid length\n");
568 /* check if pba_num buffer is big enough */
569 if (pba_num_size < (((u32)length * 2) - 1)) {
570 hw_dbg(hw, "PBA string buffer too small\n");
574 /* trim pba length from start of string */
578 for (offset = 0; offset < length; offset++) {
579 ret_val = hw->eeprom.ops.read(hw, pba_ptr + offset, &data);
581 hw_dbg(hw, "NVM Read Error\n");
584 pba_num[offset * 2] = (u8)(data >> 8);
585 pba_num[(offset * 2) + 1] = (u8)(data & 0xFF);
587 pba_num[offset * 2] = '\0';
593 * ixgbe_get_mac_addr_generic - Generic get MAC address
594 * @hw: pointer to hardware structure
595 * @mac_addr: Adapter MAC address
597 * Reads the adapter's MAC address from first Receive Address Register (RAR0)
598 * A reset of the adapter must be performed prior to calling this function
599 * in order for the MAC address to have been loaded from the EEPROM into RAR0
601 s32 ixgbe_get_mac_addr_generic(struct ixgbe_hw *hw, u8 *mac_addr)
607 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(0));
608 rar_low = IXGBE_READ_REG(hw, IXGBE_RAL(0));
610 for (i = 0; i < 4; i++)
611 mac_addr[i] = (u8)(rar_low >> (i*8));
613 for (i = 0; i < 2; i++)
614 mac_addr[i+4] = (u8)(rar_high >> (i*8));
619 enum ixgbe_bus_width ixgbe_convert_bus_width(u16 link_status)
621 switch (link_status & IXGBE_PCI_LINK_WIDTH) {
622 case IXGBE_PCI_LINK_WIDTH_1:
623 return ixgbe_bus_width_pcie_x1;
624 case IXGBE_PCI_LINK_WIDTH_2:
625 return ixgbe_bus_width_pcie_x2;
626 case IXGBE_PCI_LINK_WIDTH_4:
627 return ixgbe_bus_width_pcie_x4;
628 case IXGBE_PCI_LINK_WIDTH_8:
629 return ixgbe_bus_width_pcie_x8;
631 return ixgbe_bus_width_unknown;
635 enum ixgbe_bus_speed ixgbe_convert_bus_speed(u16 link_status)
637 switch (link_status & IXGBE_PCI_LINK_SPEED) {
638 case IXGBE_PCI_LINK_SPEED_2500:
639 return ixgbe_bus_speed_2500;
640 case IXGBE_PCI_LINK_SPEED_5000:
641 return ixgbe_bus_speed_5000;
642 case IXGBE_PCI_LINK_SPEED_8000:
643 return ixgbe_bus_speed_8000;
645 return ixgbe_bus_speed_unknown;
650 * ixgbe_get_bus_info_generic - Generic set PCI bus info
651 * @hw: pointer to hardware structure
653 * Sets the PCI bus info (speed, width, type) within the ixgbe_hw structure
655 s32 ixgbe_get_bus_info_generic(struct ixgbe_hw *hw)
659 hw->bus.type = ixgbe_bus_type_pci_express;
661 /* Get the negotiated link width and speed from PCI config space */
662 link_status = ixgbe_read_pci_cfg_word(hw, IXGBE_PCI_LINK_STATUS);
664 hw->bus.width = ixgbe_convert_bus_width(link_status);
665 hw->bus.speed = ixgbe_convert_bus_speed(link_status);
667 hw->mac.ops.set_lan_id(hw);
673 * ixgbe_set_lan_id_multi_port_pcie - Set LAN id for PCIe multiple port devices
674 * @hw: pointer to the HW structure
676 * Determines the LAN function id by reading memory-mapped registers
677 * and swaps the port value if requested.
679 void ixgbe_set_lan_id_multi_port_pcie(struct ixgbe_hw *hw)
681 struct ixgbe_bus_info *bus = &hw->bus;
685 reg = IXGBE_READ_REG(hw, IXGBE_STATUS);
686 bus->func = (reg & IXGBE_STATUS_LAN_ID) >> IXGBE_STATUS_LAN_ID_SHIFT;
687 bus->lan_id = bus->func;
689 /* check for a port swap */
690 reg = IXGBE_READ_REG(hw, IXGBE_FACTPS(hw));
691 if (reg & IXGBE_FACTPS_LFS)
694 /* Get MAC instance from EEPROM for configuring CS4227 */
695 if (hw->device_id == IXGBE_DEV_ID_X550EM_A_SFP) {
696 hw->eeprom.ops.read(hw, IXGBE_EEPROM_CTRL_4, &ee_ctrl_4);
697 bus->instance_id = (ee_ctrl_4 & IXGBE_EE_CTRL_4_INST_ID) >>
698 IXGBE_EE_CTRL_4_INST_ID_SHIFT;
703 * ixgbe_stop_adapter_generic - Generic stop Tx/Rx units
704 * @hw: pointer to hardware structure
706 * Sets the adapter_stopped flag within ixgbe_hw struct. Clears interrupts,
707 * disables transmit and receive units. The adapter_stopped flag is used by
708 * the shared code and drivers to determine if the adapter is in a stopped
709 * state and should not touch the hardware.
711 s32 ixgbe_stop_adapter_generic(struct ixgbe_hw *hw)
717 * Set the adapter_stopped flag so other driver functions stop touching
720 hw->adapter_stopped = true;
722 /* Disable the receive unit */
723 hw->mac.ops.disable_rx(hw);
725 /* Clear interrupt mask to stop interrupts from being generated */
726 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK);
728 /* Clear any pending interrupts, flush previous writes */
729 IXGBE_READ_REG(hw, IXGBE_EICR);
731 /* Disable the transmit unit. Each queue must be disabled. */
732 for (i = 0; i < hw->mac.max_tx_queues; i++)
733 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(i), IXGBE_TXDCTL_SWFLSH);
735 /* Disable the receive unit by stopping each queue */
736 for (i = 0; i < hw->mac.max_rx_queues; i++) {
737 reg_val = IXGBE_READ_REG(hw, IXGBE_RXDCTL(i));
738 reg_val &= ~IXGBE_RXDCTL_ENABLE;
739 reg_val |= IXGBE_RXDCTL_SWFLSH;
740 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(i), reg_val);
743 /* flush all queues disables */
744 IXGBE_WRITE_FLUSH(hw);
745 usleep_range(1000, 2000);
748 * Prevent the PCI-E bus from hanging by disabling PCI-E primary
749 * access and verify no pending requests
751 return ixgbe_disable_pcie_primary(hw);
755 * ixgbe_init_led_link_act_generic - Store the LED index link/activity.
756 * @hw: pointer to hardware structure
758 * Store the index for the link active LED. This will be used to support
761 s32 ixgbe_init_led_link_act_generic(struct ixgbe_hw *hw)
763 struct ixgbe_mac_info *mac = &hw->mac;
764 u32 led_reg, led_mode;
767 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
769 /* Get LED link active from the LEDCTL register */
770 for (i = 0; i < 4; i++) {
771 led_mode = led_reg >> IXGBE_LED_MODE_SHIFT(i);
773 if ((led_mode & IXGBE_LED_MODE_MASK_BASE) ==
774 IXGBE_LED_LINK_ACTIVE) {
775 mac->led_link_act = i;
780 /* If LEDCTL register does not have the LED link active set, then use
781 * known MAC defaults.
783 switch (hw->mac.type) {
784 case ixgbe_mac_x550em_a:
785 mac->led_link_act = 0;
787 case ixgbe_mac_X550EM_x:
788 mac->led_link_act = 1;
791 mac->led_link_act = 2;
798 * ixgbe_led_on_generic - Turns on the software controllable LEDs.
799 * @hw: pointer to hardware structure
800 * @index: led number to turn on
802 s32 ixgbe_led_on_generic(struct ixgbe_hw *hw, u32 index)
804 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
809 /* To turn on the LED, set mode to ON. */
810 led_reg &= ~IXGBE_LED_MODE_MASK(index);
811 led_reg |= IXGBE_LED_ON << IXGBE_LED_MODE_SHIFT(index);
812 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
813 IXGBE_WRITE_FLUSH(hw);
819 * ixgbe_led_off_generic - Turns off the software controllable LEDs.
820 * @hw: pointer to hardware structure
821 * @index: led number to turn off
823 s32 ixgbe_led_off_generic(struct ixgbe_hw *hw, u32 index)
825 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
830 /* To turn off the LED, set mode to OFF. */
831 led_reg &= ~IXGBE_LED_MODE_MASK(index);
832 led_reg |= IXGBE_LED_OFF << IXGBE_LED_MODE_SHIFT(index);
833 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
834 IXGBE_WRITE_FLUSH(hw);
840 * ixgbe_init_eeprom_params_generic - Initialize EEPROM params
841 * @hw: pointer to hardware structure
843 * Initializes the EEPROM parameters ixgbe_eeprom_info within the
844 * ixgbe_hw struct in order to set up EEPROM access.
846 s32 ixgbe_init_eeprom_params_generic(struct ixgbe_hw *hw)
848 struct ixgbe_eeprom_info *eeprom = &hw->eeprom;
852 if (eeprom->type == ixgbe_eeprom_uninitialized) {
853 eeprom->type = ixgbe_eeprom_none;
854 /* Set default semaphore delay to 10ms which is a well
856 eeprom->semaphore_delay = 10;
857 /* Clear EEPROM page size, it will be initialized as needed */
858 eeprom->word_page_size = 0;
861 * Check for EEPROM present first.
862 * If not present leave as none
864 eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw));
865 if (eec & IXGBE_EEC_PRES) {
866 eeprom->type = ixgbe_eeprom_spi;
869 * SPI EEPROM is assumed here. This code would need to
870 * change if a future EEPROM is not SPI.
872 eeprom_size = (u16)((eec & IXGBE_EEC_SIZE) >>
873 IXGBE_EEC_SIZE_SHIFT);
874 eeprom->word_size = BIT(eeprom_size +
875 IXGBE_EEPROM_WORD_SIZE_SHIFT);
878 if (eec & IXGBE_EEC_ADDR_SIZE)
879 eeprom->address_bits = 16;
881 eeprom->address_bits = 8;
882 hw_dbg(hw, "Eeprom params: type = %d, size = %d, address bits: %d\n",
883 eeprom->type, eeprom->word_size, eeprom->address_bits);
890 * ixgbe_write_eeprom_buffer_bit_bang_generic - Write EEPROM using bit-bang
891 * @hw: pointer to hardware structure
892 * @offset: offset within the EEPROM to write
893 * @words: number of words
894 * @data: 16 bit word(s) to write to EEPROM
896 * Reads 16 bit word(s) from EEPROM through bit-bang method
898 s32 ixgbe_write_eeprom_buffer_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
899 u16 words, u16 *data)
904 hw->eeprom.ops.init_params(hw);
906 if (words == 0 || (offset + words > hw->eeprom.word_size))
910 * The EEPROM page size cannot be queried from the chip. We do lazy
911 * initialization. It is worth to do that when we write large buffer.
913 if ((hw->eeprom.word_page_size == 0) &&
914 (words > IXGBE_EEPROM_PAGE_SIZE_MAX))
915 ixgbe_detect_eeprom_page_size_generic(hw, offset);
918 * We cannot hold synchronization semaphores for too long
919 * to avoid other entity starvation. However it is more efficient
920 * to read in bursts than synchronizing access for each word.
922 for (i = 0; i < words; i += IXGBE_EEPROM_RD_BUFFER_MAX_COUNT) {
923 count = (words - i) / IXGBE_EEPROM_RD_BUFFER_MAX_COUNT > 0 ?
924 IXGBE_EEPROM_RD_BUFFER_MAX_COUNT : (words - i);
925 status = ixgbe_write_eeprom_buffer_bit_bang(hw, offset + i,
936 * ixgbe_write_eeprom_buffer_bit_bang - Writes 16 bit word(s) to EEPROM
937 * @hw: pointer to hardware structure
938 * @offset: offset within the EEPROM to be written to
939 * @words: number of word(s)
940 * @data: 16 bit word(s) to be written to the EEPROM
942 * If ixgbe_eeprom_update_checksum is not called after this function, the
943 * EEPROM will most likely contain an invalid checksum.
945 static s32 ixgbe_write_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset,
946 u16 words, u16 *data)
952 u8 write_opcode = IXGBE_EEPROM_WRITE_OPCODE_SPI;
954 /* Prepare the EEPROM for writing */
955 status = ixgbe_acquire_eeprom(hw);
959 if (ixgbe_ready_eeprom(hw) != 0) {
960 ixgbe_release_eeprom(hw);
964 for (i = 0; i < words; i++) {
965 ixgbe_standby_eeprom(hw);
967 /* Send the WRITE ENABLE command (8 bit opcode) */
968 ixgbe_shift_out_eeprom_bits(hw,
969 IXGBE_EEPROM_WREN_OPCODE_SPI,
970 IXGBE_EEPROM_OPCODE_BITS);
972 ixgbe_standby_eeprom(hw);
974 /* Some SPI eeproms use the 8th address bit embedded
977 if ((hw->eeprom.address_bits == 8) &&
978 ((offset + i) >= 128))
979 write_opcode |= IXGBE_EEPROM_A8_OPCODE_SPI;
981 /* Send the Write command (8-bit opcode + addr) */
982 ixgbe_shift_out_eeprom_bits(hw, write_opcode,
983 IXGBE_EEPROM_OPCODE_BITS);
984 ixgbe_shift_out_eeprom_bits(hw, (u16)((offset + i) * 2),
985 hw->eeprom.address_bits);
987 page_size = hw->eeprom.word_page_size;
989 /* Send the data in burst via SPI */
992 word = (word >> 8) | (word << 8);
993 ixgbe_shift_out_eeprom_bits(hw, word, 16);
998 /* do not wrap around page */
999 if (((offset + i) & (page_size - 1)) ==
1002 } while (++i < words);
1004 ixgbe_standby_eeprom(hw);
1005 usleep_range(10000, 20000);
1007 /* Done with writing - release the EEPROM */
1008 ixgbe_release_eeprom(hw);
1014 * ixgbe_write_eeprom_generic - Writes 16 bit value to EEPROM
1015 * @hw: pointer to hardware structure
1016 * @offset: offset within the EEPROM to be written to
1017 * @data: 16 bit word to be written to the EEPROM
1019 * If ixgbe_eeprom_update_checksum is not called after this function, the
1020 * EEPROM will most likely contain an invalid checksum.
1022 s32 ixgbe_write_eeprom_generic(struct ixgbe_hw *hw, u16 offset, u16 data)
1024 hw->eeprom.ops.init_params(hw);
1026 if (offset >= hw->eeprom.word_size)
1029 return ixgbe_write_eeprom_buffer_bit_bang(hw, offset, 1, &data);
1033 * ixgbe_read_eeprom_buffer_bit_bang_generic - Read EEPROM using bit-bang
1034 * @hw: pointer to hardware structure
1035 * @offset: offset within the EEPROM to be read
1036 * @words: number of word(s)
1037 * @data: read 16 bit words(s) from EEPROM
1039 * Reads 16 bit word(s) from EEPROM through bit-bang method
1041 s32 ixgbe_read_eeprom_buffer_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
1042 u16 words, u16 *data)
1047 hw->eeprom.ops.init_params(hw);
1049 if (words == 0 || (offset + words > hw->eeprom.word_size))
1053 * We cannot hold synchronization semaphores for too long
1054 * to avoid other entity starvation. However it is more efficient
1055 * to read in bursts than synchronizing access for each word.
1057 for (i = 0; i < words; i += IXGBE_EEPROM_RD_BUFFER_MAX_COUNT) {
1058 count = (words - i) / IXGBE_EEPROM_RD_BUFFER_MAX_COUNT > 0 ?
1059 IXGBE_EEPROM_RD_BUFFER_MAX_COUNT : (words - i);
1061 status = ixgbe_read_eeprom_buffer_bit_bang(hw, offset + i,
1072 * ixgbe_read_eeprom_buffer_bit_bang - Read EEPROM using bit-bang
1073 * @hw: pointer to hardware structure
1074 * @offset: offset within the EEPROM to be read
1075 * @words: number of word(s)
1076 * @data: read 16 bit word(s) from EEPROM
1078 * Reads 16 bit word(s) from EEPROM through bit-bang method
1080 static s32 ixgbe_read_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset,
1081 u16 words, u16 *data)
1085 u8 read_opcode = IXGBE_EEPROM_READ_OPCODE_SPI;
1088 /* Prepare the EEPROM for reading */
1089 status = ixgbe_acquire_eeprom(hw);
1093 if (ixgbe_ready_eeprom(hw) != 0) {
1094 ixgbe_release_eeprom(hw);
1098 for (i = 0; i < words; i++) {
1099 ixgbe_standby_eeprom(hw);
1100 /* Some SPI eeproms use the 8th address bit embedded
1103 if ((hw->eeprom.address_bits == 8) &&
1104 ((offset + i) >= 128))
1105 read_opcode |= IXGBE_EEPROM_A8_OPCODE_SPI;
1107 /* Send the READ command (opcode + addr) */
1108 ixgbe_shift_out_eeprom_bits(hw, read_opcode,
1109 IXGBE_EEPROM_OPCODE_BITS);
1110 ixgbe_shift_out_eeprom_bits(hw, (u16)((offset + i) * 2),
1111 hw->eeprom.address_bits);
1113 /* Read the data. */
1114 word_in = ixgbe_shift_in_eeprom_bits(hw, 16);
1115 data[i] = (word_in >> 8) | (word_in << 8);
1118 /* End this read operation */
1119 ixgbe_release_eeprom(hw);
1125 * ixgbe_read_eeprom_bit_bang_generic - Read EEPROM word using bit-bang
1126 * @hw: pointer to hardware structure
1127 * @offset: offset within the EEPROM to be read
1128 * @data: read 16 bit value from EEPROM
1130 * Reads 16 bit value from EEPROM through bit-bang method
1132 s32 ixgbe_read_eeprom_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
1135 hw->eeprom.ops.init_params(hw);
1137 if (offset >= hw->eeprom.word_size)
1140 return ixgbe_read_eeprom_buffer_bit_bang(hw, offset, 1, data);
1144 * ixgbe_read_eerd_buffer_generic - Read EEPROM word(s) using EERD
1145 * @hw: pointer to hardware structure
1146 * @offset: offset of word in the EEPROM to read
1147 * @words: number of word(s)
1148 * @data: 16 bit word(s) from the EEPROM
1150 * Reads a 16 bit word(s) from the EEPROM using the EERD register.
1152 s32 ixgbe_read_eerd_buffer_generic(struct ixgbe_hw *hw, u16 offset,
1153 u16 words, u16 *data)
1159 hw->eeprom.ops.init_params(hw);
1161 if (words == 0 || offset >= hw->eeprom.word_size)
1164 for (i = 0; i < words; i++) {
1165 eerd = ((offset + i) << IXGBE_EEPROM_RW_ADDR_SHIFT) |
1166 IXGBE_EEPROM_RW_REG_START;
1168 IXGBE_WRITE_REG(hw, IXGBE_EERD, eerd);
1169 status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_READ);
1172 data[i] = (IXGBE_READ_REG(hw, IXGBE_EERD) >>
1173 IXGBE_EEPROM_RW_REG_DATA);
1175 hw_dbg(hw, "Eeprom read timed out\n");
1184 * ixgbe_detect_eeprom_page_size_generic - Detect EEPROM page size
1185 * @hw: pointer to hardware structure
1186 * @offset: offset within the EEPROM to be used as a scratch pad
1188 * Discover EEPROM page size by writing marching data at given offset.
1189 * This function is called only when we are writing a new large buffer
1190 * at given offset so the data would be overwritten anyway.
1192 static s32 ixgbe_detect_eeprom_page_size_generic(struct ixgbe_hw *hw,
1195 u16 data[IXGBE_EEPROM_PAGE_SIZE_MAX];
1199 for (i = 0; i < IXGBE_EEPROM_PAGE_SIZE_MAX; i++)
1202 hw->eeprom.word_page_size = IXGBE_EEPROM_PAGE_SIZE_MAX;
1203 status = ixgbe_write_eeprom_buffer_bit_bang(hw, offset,
1204 IXGBE_EEPROM_PAGE_SIZE_MAX, data);
1205 hw->eeprom.word_page_size = 0;
1209 status = ixgbe_read_eeprom_buffer_bit_bang(hw, offset, 1, data);
1214 * When writing in burst more than the actual page size
1215 * EEPROM address wraps around current page.
1217 hw->eeprom.word_page_size = IXGBE_EEPROM_PAGE_SIZE_MAX - data[0];
1219 hw_dbg(hw, "Detected EEPROM page size = %d words.\n",
1220 hw->eeprom.word_page_size);
1225 * ixgbe_read_eerd_generic - Read EEPROM word using EERD
1226 * @hw: pointer to hardware structure
1227 * @offset: offset of word in the EEPROM to read
1228 * @data: word read from the EEPROM
1230 * Reads a 16 bit word from the EEPROM using the EERD register.
1232 s32 ixgbe_read_eerd_generic(struct ixgbe_hw *hw, u16 offset, u16 *data)
1234 return ixgbe_read_eerd_buffer_generic(hw, offset, 1, data);
1238 * ixgbe_write_eewr_buffer_generic - Write EEPROM word(s) using EEWR
1239 * @hw: pointer to hardware structure
1240 * @offset: offset of word in the EEPROM to write
1241 * @words: number of words
1242 * @data: word(s) write to the EEPROM
1244 * Write a 16 bit word(s) to the EEPROM using the EEWR register.
1246 s32 ixgbe_write_eewr_buffer_generic(struct ixgbe_hw *hw, u16 offset,
1247 u16 words, u16 *data)
1253 hw->eeprom.ops.init_params(hw);
1255 if (words == 0 || offset >= hw->eeprom.word_size)
1258 for (i = 0; i < words; i++) {
1259 eewr = ((offset + i) << IXGBE_EEPROM_RW_ADDR_SHIFT) |
1260 (data[i] << IXGBE_EEPROM_RW_REG_DATA) |
1261 IXGBE_EEPROM_RW_REG_START;
1263 status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_WRITE);
1265 hw_dbg(hw, "Eeprom write EEWR timed out\n");
1269 IXGBE_WRITE_REG(hw, IXGBE_EEWR, eewr);
1271 status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_WRITE);
1273 hw_dbg(hw, "Eeprom write EEWR timed out\n");
1282 * ixgbe_write_eewr_generic - Write EEPROM word using EEWR
1283 * @hw: pointer to hardware structure
1284 * @offset: offset of word in the EEPROM to write
1285 * @data: word write to the EEPROM
1287 * Write a 16 bit word to the EEPROM using the EEWR register.
1289 s32 ixgbe_write_eewr_generic(struct ixgbe_hw *hw, u16 offset, u16 data)
1291 return ixgbe_write_eewr_buffer_generic(hw, offset, 1, &data);
1295 * ixgbe_poll_eerd_eewr_done - Poll EERD read or EEWR write status
1296 * @hw: pointer to hardware structure
1297 * @ee_reg: EEPROM flag for polling
1299 * Polls the status bit (bit 1) of the EERD or EEWR to determine when the
1300 * read or write is done respectively.
1302 static s32 ixgbe_poll_eerd_eewr_done(struct ixgbe_hw *hw, u32 ee_reg)
1307 for (i = 0; i < IXGBE_EERD_EEWR_ATTEMPTS; i++) {
1308 if (ee_reg == IXGBE_NVM_POLL_READ)
1309 reg = IXGBE_READ_REG(hw, IXGBE_EERD);
1311 reg = IXGBE_READ_REG(hw, IXGBE_EEWR);
1313 if (reg & IXGBE_EEPROM_RW_REG_DONE) {
1322 * ixgbe_acquire_eeprom - Acquire EEPROM using bit-bang
1323 * @hw: pointer to hardware structure
1325 * Prepares EEPROM for access using bit-bang method. This function should
1326 * be called before issuing a command to the EEPROM.
1328 static s32 ixgbe_acquire_eeprom(struct ixgbe_hw *hw)
1333 if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) != 0)
1336 eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw));
1338 /* Request EEPROM Access */
1339 eec |= IXGBE_EEC_REQ;
1340 IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), eec);
1342 for (i = 0; i < IXGBE_EEPROM_GRANT_ATTEMPTS; i++) {
1343 eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw));
1344 if (eec & IXGBE_EEC_GNT)
1349 /* Release if grant not acquired */
1350 if (!(eec & IXGBE_EEC_GNT)) {
1351 eec &= ~IXGBE_EEC_REQ;
1352 IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), eec);
1353 hw_dbg(hw, "Could not acquire EEPROM grant\n");
1355 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
1359 /* Setup EEPROM for Read/Write */
1360 /* Clear CS and SK */
1361 eec &= ~(IXGBE_EEC_CS | IXGBE_EEC_SK);
1362 IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), eec);
1363 IXGBE_WRITE_FLUSH(hw);
1369 * ixgbe_get_eeprom_semaphore - Get hardware semaphore
1370 * @hw: pointer to hardware structure
1372 * Sets the hardware semaphores so EEPROM access can occur for bit-bang method
1374 static s32 ixgbe_get_eeprom_semaphore(struct ixgbe_hw *hw)
1380 /* Get SMBI software semaphore between device drivers first */
1381 for (i = 0; i < timeout; i++) {
1383 * If the SMBI bit is 0 when we read it, then the bit will be
1384 * set and we have the semaphore
1386 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM(hw));
1387 if (!(swsm & IXGBE_SWSM_SMBI))
1389 usleep_range(50, 100);
1393 hw_dbg(hw, "Driver can't access the Eeprom - SMBI Semaphore not granted.\n");
1394 /* this release is particularly important because our attempts
1395 * above to get the semaphore may have succeeded, and if there
1396 * was a timeout, we should unconditionally clear the semaphore
1397 * bits to free the driver to make progress
1399 ixgbe_release_eeprom_semaphore(hw);
1401 usleep_range(50, 100);
1403 * If the SMBI bit is 0 when we read it, then the bit will be
1404 * set and we have the semaphore
1406 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM(hw));
1407 if (swsm & IXGBE_SWSM_SMBI) {
1408 hw_dbg(hw, "Software semaphore SMBI between device drivers not granted.\n");
1413 /* Now get the semaphore between SW/FW through the SWESMBI bit */
1414 for (i = 0; i < timeout; i++) {
1415 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM(hw));
1417 /* Set the SW EEPROM semaphore bit to request access */
1418 swsm |= IXGBE_SWSM_SWESMBI;
1419 IXGBE_WRITE_REG(hw, IXGBE_SWSM(hw), swsm);
1421 /* If we set the bit successfully then we got the
1424 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM(hw));
1425 if (swsm & IXGBE_SWSM_SWESMBI)
1428 usleep_range(50, 100);
1431 /* Release semaphores and return error if SW EEPROM semaphore
1432 * was not granted because we don't have access to the EEPROM
1435 hw_dbg(hw, "SWESMBI Software EEPROM semaphore not granted.\n");
1436 ixgbe_release_eeprom_semaphore(hw);
1444 * ixgbe_release_eeprom_semaphore - Release hardware semaphore
1445 * @hw: pointer to hardware structure
1447 * This function clears hardware semaphore bits.
1449 static void ixgbe_release_eeprom_semaphore(struct ixgbe_hw *hw)
1453 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM(hw));
1455 /* Release both semaphores by writing 0 to the bits SWESMBI and SMBI */
1456 swsm &= ~(IXGBE_SWSM_SWESMBI | IXGBE_SWSM_SMBI);
1457 IXGBE_WRITE_REG(hw, IXGBE_SWSM(hw), swsm);
1458 IXGBE_WRITE_FLUSH(hw);
1462 * ixgbe_ready_eeprom - Polls for EEPROM ready
1463 * @hw: pointer to hardware structure
1465 static s32 ixgbe_ready_eeprom(struct ixgbe_hw *hw)
1471 * Read "Status Register" repeatedly until the LSB is cleared. The
1472 * EEPROM will signal that the command has been completed by clearing
1473 * bit 0 of the internal status register. If it's not cleared within
1474 * 5 milliseconds, then error out.
1476 for (i = 0; i < IXGBE_EEPROM_MAX_RETRY_SPI; i += 5) {
1477 ixgbe_shift_out_eeprom_bits(hw, IXGBE_EEPROM_RDSR_OPCODE_SPI,
1478 IXGBE_EEPROM_OPCODE_BITS);
1479 spi_stat_reg = (u8)ixgbe_shift_in_eeprom_bits(hw, 8);
1480 if (!(spi_stat_reg & IXGBE_EEPROM_STATUS_RDY_SPI))
1484 ixgbe_standby_eeprom(hw);
1488 * On some parts, SPI write time could vary from 0-20mSec on 3.3V
1489 * devices (and only 0-5mSec on 5V devices)
1491 if (i >= IXGBE_EEPROM_MAX_RETRY_SPI) {
1492 hw_dbg(hw, "SPI EEPROM Status error\n");
1500 * ixgbe_standby_eeprom - Returns EEPROM to a "standby" state
1501 * @hw: pointer to hardware structure
1503 static void ixgbe_standby_eeprom(struct ixgbe_hw *hw)
1507 eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw));
1509 /* Toggle CS to flush commands */
1510 eec |= IXGBE_EEC_CS;
1511 IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), eec);
1512 IXGBE_WRITE_FLUSH(hw);
1514 eec &= ~IXGBE_EEC_CS;
1515 IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), eec);
1516 IXGBE_WRITE_FLUSH(hw);
1521 * ixgbe_shift_out_eeprom_bits - Shift data bits out to the EEPROM.
1522 * @hw: pointer to hardware structure
1523 * @data: data to send to the EEPROM
1524 * @count: number of bits to shift out
1526 static void ixgbe_shift_out_eeprom_bits(struct ixgbe_hw *hw, u16 data,
1533 eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw));
1536 * Mask is used to shift "count" bits of "data" out to the EEPROM
1537 * one bit at a time. Determine the starting bit based on count
1539 mask = BIT(count - 1);
1541 for (i = 0; i < count; i++) {
1543 * A "1" is shifted out to the EEPROM by setting bit "DI" to a
1544 * "1", and then raising and then lowering the clock (the SK
1545 * bit controls the clock input to the EEPROM). A "0" is
1546 * shifted out to the EEPROM by setting "DI" to "0" and then
1547 * raising and then lowering the clock.
1550 eec |= IXGBE_EEC_DI;
1552 eec &= ~IXGBE_EEC_DI;
1554 IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), eec);
1555 IXGBE_WRITE_FLUSH(hw);
1559 ixgbe_raise_eeprom_clk(hw, &eec);
1560 ixgbe_lower_eeprom_clk(hw, &eec);
1563 * Shift mask to signify next bit of data to shift in to the
1569 /* We leave the "DI" bit set to "0" when we leave this routine. */
1570 eec &= ~IXGBE_EEC_DI;
1571 IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), eec);
1572 IXGBE_WRITE_FLUSH(hw);
1576 * ixgbe_shift_in_eeprom_bits - Shift data bits in from the EEPROM
1577 * @hw: pointer to hardware structure
1578 * @count: number of bits to shift
1580 static u16 ixgbe_shift_in_eeprom_bits(struct ixgbe_hw *hw, u16 count)
1587 * In order to read a register from the EEPROM, we need to shift
1588 * 'count' bits in from the EEPROM. Bits are "shifted in" by raising
1589 * the clock input to the EEPROM (setting the SK bit), and then reading
1590 * the value of the "DO" bit. During this "shifting in" process the
1591 * "DI" bit should always be clear.
1593 eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw));
1595 eec &= ~(IXGBE_EEC_DO | IXGBE_EEC_DI);
1597 for (i = 0; i < count; i++) {
1599 ixgbe_raise_eeprom_clk(hw, &eec);
1601 eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw));
1603 eec &= ~(IXGBE_EEC_DI);
1604 if (eec & IXGBE_EEC_DO)
1607 ixgbe_lower_eeprom_clk(hw, &eec);
1614 * ixgbe_raise_eeprom_clk - Raises the EEPROM's clock input.
1615 * @hw: pointer to hardware structure
1616 * @eec: EEC register's current value
1618 static void ixgbe_raise_eeprom_clk(struct ixgbe_hw *hw, u32 *eec)
1621 * Raise the clock input to the EEPROM
1622 * (setting the SK bit), then delay
1624 *eec = *eec | IXGBE_EEC_SK;
1625 IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), *eec);
1626 IXGBE_WRITE_FLUSH(hw);
1631 * ixgbe_lower_eeprom_clk - Lowers the EEPROM's clock input.
1632 * @hw: pointer to hardware structure
1633 * @eec: EEC's current value
1635 static void ixgbe_lower_eeprom_clk(struct ixgbe_hw *hw, u32 *eec)
1638 * Lower the clock input to the EEPROM (clearing the SK bit), then
1641 *eec = *eec & ~IXGBE_EEC_SK;
1642 IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), *eec);
1643 IXGBE_WRITE_FLUSH(hw);
1648 * ixgbe_release_eeprom - Release EEPROM, release semaphores
1649 * @hw: pointer to hardware structure
1651 static void ixgbe_release_eeprom(struct ixgbe_hw *hw)
1655 eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw));
1657 eec |= IXGBE_EEC_CS; /* Pull CS high */
1658 eec &= ~IXGBE_EEC_SK; /* Lower SCK */
1660 IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), eec);
1661 IXGBE_WRITE_FLUSH(hw);
1665 /* Stop requesting EEPROM access */
1666 eec &= ~IXGBE_EEC_REQ;
1667 IXGBE_WRITE_REG(hw, IXGBE_EEC(hw), eec);
1669 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
1672 * Delay before attempt to obtain semaphore again to allow FW
1673 * access. semaphore_delay is in ms we need us for usleep_range
1675 usleep_range(hw->eeprom.semaphore_delay * 1000,
1676 hw->eeprom.semaphore_delay * 2000);
1680 * ixgbe_calc_eeprom_checksum_generic - Calculates and returns the checksum
1681 * @hw: pointer to hardware structure
1683 s32 ixgbe_calc_eeprom_checksum_generic(struct ixgbe_hw *hw)
1692 /* Include 0x0-0x3F in the checksum */
1693 for (i = 0; i < IXGBE_EEPROM_CHECKSUM; i++) {
1694 if (hw->eeprom.ops.read(hw, i, &word)) {
1695 hw_dbg(hw, "EEPROM read failed\n");
1701 /* Include all data from pointers except for the fw pointer */
1702 for (i = IXGBE_PCIE_ANALOG_PTR; i < IXGBE_FW_PTR; i++) {
1703 if (hw->eeprom.ops.read(hw, i, &pointer)) {
1704 hw_dbg(hw, "EEPROM read failed\n");
1708 /* If the pointer seems invalid */
1709 if (pointer == 0xFFFF || pointer == 0)
1712 if (hw->eeprom.ops.read(hw, pointer, &length)) {
1713 hw_dbg(hw, "EEPROM read failed\n");
1717 if (length == 0xFFFF || length == 0)
1720 for (j = pointer + 1; j <= pointer + length; j++) {
1721 if (hw->eeprom.ops.read(hw, j, &word)) {
1722 hw_dbg(hw, "EEPROM read failed\n");
1729 checksum = (u16)IXGBE_EEPROM_SUM - checksum;
1731 return (s32)checksum;
1735 * ixgbe_validate_eeprom_checksum_generic - Validate EEPROM checksum
1736 * @hw: pointer to hardware structure
1737 * @checksum_val: calculated checksum
1739 * Performs checksum calculation and validates the EEPROM checksum. If the
1740 * caller does not need checksum_val, the value can be NULL.
1742 s32 ixgbe_validate_eeprom_checksum_generic(struct ixgbe_hw *hw,
1747 u16 read_checksum = 0;
1750 * Read the first word from the EEPROM. If this times out or fails, do
1751 * not continue or we could be in for a very long wait while every
1754 status = hw->eeprom.ops.read(hw, 0, &checksum);
1756 hw_dbg(hw, "EEPROM read failed\n");
1760 status = hw->eeprom.ops.calc_checksum(hw);
1764 checksum = (u16)(status & 0xffff);
1766 status = hw->eeprom.ops.read(hw, IXGBE_EEPROM_CHECKSUM, &read_checksum);
1768 hw_dbg(hw, "EEPROM read failed\n");
1772 /* Verify read checksum from EEPROM is the same as
1773 * calculated checksum
1775 if (read_checksum != checksum)
1778 /* If the user cares, return the calculated checksum */
1780 *checksum_val = checksum;
1786 * ixgbe_update_eeprom_checksum_generic - Updates the EEPROM checksum
1787 * @hw: pointer to hardware structure
1789 s32 ixgbe_update_eeprom_checksum_generic(struct ixgbe_hw *hw)
1795 * Read the first word from the EEPROM. If this times out or fails, do
1796 * not continue or we could be in for a very long wait while every
1799 status = hw->eeprom.ops.read(hw, 0, &checksum);
1801 hw_dbg(hw, "EEPROM read failed\n");
1805 status = hw->eeprom.ops.calc_checksum(hw);
1809 checksum = (u16)(status & 0xffff);
1811 status = hw->eeprom.ops.write(hw, IXGBE_EEPROM_CHECKSUM, checksum);
1817 * ixgbe_set_rar_generic - Set Rx address register
1818 * @hw: pointer to hardware structure
1819 * @index: Receive address register to write
1820 * @addr: Address to put into receive address register
1821 * @vmdq: VMDq "set" or "pool" index
1822 * @enable_addr: set flag that address is active
1824 * Puts an ethernet address into a receive address register.
1826 s32 ixgbe_set_rar_generic(struct ixgbe_hw *hw, u32 index, u8 *addr, u32 vmdq,
1829 u32 rar_low, rar_high;
1830 u32 rar_entries = hw->mac.num_rar_entries;
1832 /* Make sure we are using a valid rar index range */
1833 if (index >= rar_entries) {
1834 hw_dbg(hw, "RAR index %d is out of range.\n", index);
1838 /* setup VMDq pool selection before this RAR gets enabled */
1839 hw->mac.ops.set_vmdq(hw, index, vmdq);
1842 * HW expects these in little endian so we reverse the byte
1843 * order from network order (big endian) to little endian
1845 rar_low = ((u32)addr[0] |
1846 ((u32)addr[1] << 8) |
1847 ((u32)addr[2] << 16) |
1848 ((u32)addr[3] << 24));
1850 * Some parts put the VMDq setting in the extra RAH bits,
1851 * so save everything except the lower 16 bits that hold part
1852 * of the address and the address valid bit.
1854 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index));
1855 rar_high &= ~(0x0000FFFF | IXGBE_RAH_AV);
1856 rar_high |= ((u32)addr[4] | ((u32)addr[5] << 8));
1858 if (enable_addr != 0)
1859 rar_high |= IXGBE_RAH_AV;
1861 /* Record lower 32 bits of MAC address and then make
1862 * sure that write is flushed to hardware before writing
1863 * the upper 16 bits and setting the valid bit.
1865 IXGBE_WRITE_REG(hw, IXGBE_RAL(index), rar_low);
1866 IXGBE_WRITE_FLUSH(hw);
1867 IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high);
1873 * ixgbe_clear_rar_generic - Remove Rx address register
1874 * @hw: pointer to hardware structure
1875 * @index: Receive address register to write
1877 * Clears an ethernet address from a receive address register.
1879 s32 ixgbe_clear_rar_generic(struct ixgbe_hw *hw, u32 index)
1882 u32 rar_entries = hw->mac.num_rar_entries;
1884 /* Make sure we are using a valid rar index range */
1885 if (index >= rar_entries) {
1886 hw_dbg(hw, "RAR index %d is out of range.\n", index);
1891 * Some parts put the VMDq setting in the extra RAH bits,
1892 * so save everything except the lower 16 bits that hold part
1893 * of the address and the address valid bit.
1895 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index));
1896 rar_high &= ~(0x0000FFFF | IXGBE_RAH_AV);
1898 /* Clear the address valid bit and upper 16 bits of the address
1899 * before clearing the lower bits. This way we aren't updating
1902 IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high);
1903 IXGBE_WRITE_FLUSH(hw);
1904 IXGBE_WRITE_REG(hw, IXGBE_RAL(index), 0);
1906 /* clear VMDq pool/queue selection for this RAR */
1907 hw->mac.ops.clear_vmdq(hw, index, IXGBE_CLEAR_VMDQ_ALL);
1913 * ixgbe_init_rx_addrs_generic - Initializes receive address filters.
1914 * @hw: pointer to hardware structure
1916 * Places the MAC address in receive address register 0 and clears the rest
1917 * of the receive address registers. Clears the multicast table. Assumes
1918 * the receiver is in reset when the routine is called.
1920 s32 ixgbe_init_rx_addrs_generic(struct ixgbe_hw *hw)
1923 u32 rar_entries = hw->mac.num_rar_entries;
1926 * If the current mac address is valid, assume it is a software override
1927 * to the permanent address.
1928 * Otherwise, use the permanent address from the eeprom.
1930 if (!is_valid_ether_addr(hw->mac.addr)) {
1931 /* Get the MAC address from the RAR0 for later reference */
1932 hw->mac.ops.get_mac_addr(hw, hw->mac.addr);
1934 hw_dbg(hw, " Keeping Current RAR0 Addr =%pM\n", hw->mac.addr);
1936 /* Setup the receive address. */
1937 hw_dbg(hw, "Overriding MAC Address in RAR[0]\n");
1938 hw_dbg(hw, " New MAC Addr =%pM\n", hw->mac.addr);
1940 hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0, IXGBE_RAH_AV);
1943 /* clear VMDq pool/queue selection for RAR 0 */
1944 hw->mac.ops.clear_vmdq(hw, 0, IXGBE_CLEAR_VMDQ_ALL);
1946 hw->addr_ctrl.overflow_promisc = 0;
1948 hw->addr_ctrl.rar_used_count = 1;
1950 /* Zero out the other receive addresses. */
1951 hw_dbg(hw, "Clearing RAR[1-%d]\n", rar_entries - 1);
1952 for (i = 1; i < rar_entries; i++) {
1953 IXGBE_WRITE_REG(hw, IXGBE_RAL(i), 0);
1954 IXGBE_WRITE_REG(hw, IXGBE_RAH(i), 0);
1958 hw->addr_ctrl.mta_in_use = 0;
1959 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, hw->mac.mc_filter_type);
1961 hw_dbg(hw, " Clearing MTA\n");
1962 for (i = 0; i < hw->mac.mcft_size; i++)
1963 IXGBE_WRITE_REG(hw, IXGBE_MTA(i), 0);
1965 if (hw->mac.ops.init_uta_tables)
1966 hw->mac.ops.init_uta_tables(hw);
1972 * ixgbe_mta_vector - Determines bit-vector in multicast table to set
1973 * @hw: pointer to hardware structure
1974 * @mc_addr: the multicast address
1976 * Extracts the 12 bits, from a multicast address, to determine which
1977 * bit-vector to set in the multicast table. The hardware uses 12 bits, from
1978 * incoming rx multicast addresses, to determine the bit-vector to check in
1979 * the MTA. Which of the 4 combination, of 12-bits, the hardware uses is set
1980 * by the MO field of the MCSTCTRL. The MO field is set during initialization
1981 * to mc_filter_type.
1983 static s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr)
1987 switch (hw->mac.mc_filter_type) {
1988 case 0: /* use bits [47:36] of the address */
1989 vector = ((mc_addr[4] >> 4) | (((u16)mc_addr[5]) << 4));
1991 case 1: /* use bits [46:35] of the address */
1992 vector = ((mc_addr[4] >> 3) | (((u16)mc_addr[5]) << 5));
1994 case 2: /* use bits [45:34] of the address */
1995 vector = ((mc_addr[4] >> 2) | (((u16)mc_addr[5]) << 6));
1997 case 3: /* use bits [43:32] of the address */
1998 vector = ((mc_addr[4]) | (((u16)mc_addr[5]) << 8));
2000 default: /* Invalid mc_filter_type */
2001 hw_dbg(hw, "MC filter type param set incorrectly\n");
2005 /* vector can only be 12-bits or boundary will be exceeded */
2011 * ixgbe_set_mta - Set bit-vector in multicast table
2012 * @hw: pointer to hardware structure
2013 * @mc_addr: Multicast address
2015 * Sets the bit-vector in the multicast table.
2017 static void ixgbe_set_mta(struct ixgbe_hw *hw, u8 *mc_addr)
2023 hw->addr_ctrl.mta_in_use++;
2025 vector = ixgbe_mta_vector(hw, mc_addr);
2026 hw_dbg(hw, " bit-vector = 0x%03X\n", vector);
2029 * The MTA is a register array of 128 32-bit registers. It is treated
2030 * like an array of 4096 bits. We want to set bit
2031 * BitArray[vector_value]. So we figure out what register the bit is
2032 * in, read it, OR in the new bit, then write back the new value. The
2033 * register is determined by the upper 7 bits of the vector value and
2034 * the bit within that register are determined by the lower 5 bits of
2037 vector_reg = (vector >> 5) & 0x7F;
2038 vector_bit = vector & 0x1F;
2039 hw->mac.mta_shadow[vector_reg] |= BIT(vector_bit);
2043 * ixgbe_update_mc_addr_list_generic - Updates MAC list of multicast addresses
2044 * @hw: pointer to hardware structure
2045 * @netdev: pointer to net device structure
2047 * The given list replaces any existing list. Clears the MC addrs from receive
2048 * address registers and the multicast table. Uses unused receive address
2049 * registers for the first multicast addresses, and hashes the rest into the
2052 s32 ixgbe_update_mc_addr_list_generic(struct ixgbe_hw *hw,
2053 struct net_device *netdev)
2055 struct netdev_hw_addr *ha;
2059 * Set the new number of MC addresses that we are being requested to
2062 hw->addr_ctrl.num_mc_addrs = netdev_mc_count(netdev);
2063 hw->addr_ctrl.mta_in_use = 0;
2065 /* Clear mta_shadow */
2066 hw_dbg(hw, " Clearing MTA\n");
2067 memset(&hw->mac.mta_shadow, 0, sizeof(hw->mac.mta_shadow));
2069 /* Update mta shadow */
2070 netdev_for_each_mc_addr(ha, netdev) {
2071 hw_dbg(hw, " Adding the multicast addresses:\n");
2072 ixgbe_set_mta(hw, ha->addr);
2076 for (i = 0; i < hw->mac.mcft_size; i++)
2077 IXGBE_WRITE_REG_ARRAY(hw, IXGBE_MTA(0), i,
2078 hw->mac.mta_shadow[i]);
2080 if (hw->addr_ctrl.mta_in_use > 0)
2081 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL,
2082 IXGBE_MCSTCTRL_MFE | hw->mac.mc_filter_type);
2084 hw_dbg(hw, "ixgbe_update_mc_addr_list_generic Complete\n");
2089 * ixgbe_enable_mc_generic - Enable multicast address in RAR
2090 * @hw: pointer to hardware structure
2092 * Enables multicast address in RAR and the use of the multicast hash table.
2094 s32 ixgbe_enable_mc_generic(struct ixgbe_hw *hw)
2096 struct ixgbe_addr_filter_info *a = &hw->addr_ctrl;
2098 if (a->mta_in_use > 0)
2099 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, IXGBE_MCSTCTRL_MFE |
2100 hw->mac.mc_filter_type);
2106 * ixgbe_disable_mc_generic - Disable multicast address in RAR
2107 * @hw: pointer to hardware structure
2109 * Disables multicast address in RAR and the use of the multicast hash table.
2111 s32 ixgbe_disable_mc_generic(struct ixgbe_hw *hw)
2113 struct ixgbe_addr_filter_info *a = &hw->addr_ctrl;
2115 if (a->mta_in_use > 0)
2116 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, hw->mac.mc_filter_type);
2122 * ixgbe_fc_enable_generic - Enable flow control
2123 * @hw: pointer to hardware structure
2125 * Enable flow control according to the current settings.
2127 s32 ixgbe_fc_enable_generic(struct ixgbe_hw *hw)
2129 u32 mflcn_reg, fccfg_reg;
2134 /* Validate the water mark configuration. */
2135 if (!hw->fc.pause_time)
2138 /* Low water mark of zero causes XOFF floods */
2139 for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
2140 if ((hw->fc.current_mode & ixgbe_fc_tx_pause) &&
2141 hw->fc.high_water[i]) {
2142 if (!hw->fc.low_water[i] ||
2143 hw->fc.low_water[i] >= hw->fc.high_water[i]) {
2144 hw_dbg(hw, "Invalid water mark configuration\n");
2150 /* Negotiate the fc mode to use */
2151 hw->mac.ops.fc_autoneg(hw);
2153 /* Disable any previous flow control settings */
2154 mflcn_reg = IXGBE_READ_REG(hw, IXGBE_MFLCN);
2155 mflcn_reg &= ~(IXGBE_MFLCN_RPFCE_MASK | IXGBE_MFLCN_RFCE);
2157 fccfg_reg = IXGBE_READ_REG(hw, IXGBE_FCCFG);
2158 fccfg_reg &= ~(IXGBE_FCCFG_TFCE_802_3X | IXGBE_FCCFG_TFCE_PRIORITY);
2161 * The possible values of fc.current_mode are:
2162 * 0: Flow control is completely disabled
2163 * 1: Rx flow control is enabled (we can receive pause frames,
2164 * but not send pause frames).
2165 * 2: Tx flow control is enabled (we can send pause frames but
2166 * we do not support receiving pause frames).
2167 * 3: Both Rx and Tx flow control (symmetric) are enabled.
2170 switch (hw->fc.current_mode) {
2173 * Flow control is disabled by software override or autoneg.
2174 * The code below will actually disable it in the HW.
2177 case ixgbe_fc_rx_pause:
2179 * Rx Flow control is enabled and Tx Flow control is
2180 * disabled by software override. Since there really
2181 * isn't a way to advertise that we are capable of RX
2182 * Pause ONLY, we will advertise that we support both
2183 * symmetric and asymmetric Rx PAUSE. Later, we will
2184 * disable the adapter's ability to send PAUSE frames.
2186 mflcn_reg |= IXGBE_MFLCN_RFCE;
2188 case ixgbe_fc_tx_pause:
2190 * Tx Flow control is enabled, and Rx Flow control is
2191 * disabled by software override.
2193 fccfg_reg |= IXGBE_FCCFG_TFCE_802_3X;
2196 /* Flow control (both Rx and Tx) is enabled by SW override. */
2197 mflcn_reg |= IXGBE_MFLCN_RFCE;
2198 fccfg_reg |= IXGBE_FCCFG_TFCE_802_3X;
2201 hw_dbg(hw, "Flow control param set incorrectly\n");
2205 /* Set 802.3x based flow control settings. */
2206 mflcn_reg |= IXGBE_MFLCN_DPF;
2207 IXGBE_WRITE_REG(hw, IXGBE_MFLCN, mflcn_reg);
2208 IXGBE_WRITE_REG(hw, IXGBE_FCCFG, fccfg_reg);
2210 /* Set up and enable Rx high/low water mark thresholds, enable XON. */
2211 for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
2212 if ((hw->fc.current_mode & ixgbe_fc_tx_pause) &&
2213 hw->fc.high_water[i]) {
2214 fcrtl = (hw->fc.low_water[i] << 10) | IXGBE_FCRTL_XONE;
2215 IXGBE_WRITE_REG(hw, IXGBE_FCRTL_82599(i), fcrtl);
2216 fcrth = (hw->fc.high_water[i] << 10) | IXGBE_FCRTH_FCEN;
2218 IXGBE_WRITE_REG(hw, IXGBE_FCRTL_82599(i), 0);
2220 * In order to prevent Tx hangs when the internal Tx
2221 * switch is enabled we must set the high water mark
2222 * to the Rx packet buffer size - 24KB. This allows
2223 * the Tx switch to function even under heavy Rx
2226 fcrth = IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(i)) - 24576;
2229 IXGBE_WRITE_REG(hw, IXGBE_FCRTH_82599(i), fcrth);
2232 /* Configure pause time (2 TCs per register) */
2233 reg = hw->fc.pause_time * 0x00010001U;
2234 for (i = 0; i < (MAX_TRAFFIC_CLASS / 2); i++)
2235 IXGBE_WRITE_REG(hw, IXGBE_FCTTV(i), reg);
2237 IXGBE_WRITE_REG(hw, IXGBE_FCRTV, hw->fc.pause_time / 2);
2243 * ixgbe_negotiate_fc - Negotiate flow control
2244 * @hw: pointer to hardware structure
2245 * @adv_reg: flow control advertised settings
2246 * @lp_reg: link partner's flow control settings
2247 * @adv_sym: symmetric pause bit in advertisement
2248 * @adv_asm: asymmetric pause bit in advertisement
2249 * @lp_sym: symmetric pause bit in link partner advertisement
2250 * @lp_asm: asymmetric pause bit in link partner advertisement
2252 * Find the intersection between advertised settings and link partner's
2253 * advertised settings
2255 s32 ixgbe_negotiate_fc(struct ixgbe_hw *hw, u32 adv_reg, u32 lp_reg,
2256 u32 adv_sym, u32 adv_asm, u32 lp_sym, u32 lp_asm)
2258 if ((!(adv_reg)) || (!(lp_reg)))
2261 if ((adv_reg & adv_sym) && (lp_reg & lp_sym)) {
2263 * Now we need to check if the user selected Rx ONLY
2264 * of pause frames. In this case, we had to advertise
2265 * FULL flow control because we could not advertise RX
2266 * ONLY. Hence, we must now check to see if we need to
2267 * turn OFF the TRANSMISSION of PAUSE frames.
2269 if (hw->fc.requested_mode == ixgbe_fc_full) {
2270 hw->fc.current_mode = ixgbe_fc_full;
2271 hw_dbg(hw, "Flow Control = FULL.\n");
2273 hw->fc.current_mode = ixgbe_fc_rx_pause;
2274 hw_dbg(hw, "Flow Control=RX PAUSE frames only\n");
2276 } else if (!(adv_reg & adv_sym) && (adv_reg & adv_asm) &&
2277 (lp_reg & lp_sym) && (lp_reg & lp_asm)) {
2278 hw->fc.current_mode = ixgbe_fc_tx_pause;
2279 hw_dbg(hw, "Flow Control = TX PAUSE frames only.\n");
2280 } else if ((adv_reg & adv_sym) && (adv_reg & adv_asm) &&
2281 !(lp_reg & lp_sym) && (lp_reg & lp_asm)) {
2282 hw->fc.current_mode = ixgbe_fc_rx_pause;
2283 hw_dbg(hw, "Flow Control = RX PAUSE frames only.\n");
2285 hw->fc.current_mode = ixgbe_fc_none;
2286 hw_dbg(hw, "Flow Control = NONE.\n");
2292 * ixgbe_fc_autoneg_fiber - Enable flow control on 1 gig fiber
2293 * @hw: pointer to hardware structure
2295 * Enable flow control according on 1 gig fiber.
2297 static s32 ixgbe_fc_autoneg_fiber(struct ixgbe_hw *hw)
2299 u32 pcs_anadv_reg, pcs_lpab_reg, linkstat;
2303 * On multispeed fiber at 1g, bail out if
2304 * - link is up but AN did not complete, or if
2305 * - link is up and AN completed but timed out
2308 linkstat = IXGBE_READ_REG(hw, IXGBE_PCS1GLSTA);
2309 if ((!!(linkstat & IXGBE_PCS1GLSTA_AN_COMPLETE) == 0) ||
2310 (!!(linkstat & IXGBE_PCS1GLSTA_AN_TIMED_OUT) == 1))
2313 pcs_anadv_reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANA);
2314 pcs_lpab_reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANLP);
2316 ret_val = ixgbe_negotiate_fc(hw, pcs_anadv_reg,
2317 pcs_lpab_reg, IXGBE_PCS1GANA_SYM_PAUSE,
2318 IXGBE_PCS1GANA_ASM_PAUSE,
2319 IXGBE_PCS1GANA_SYM_PAUSE,
2320 IXGBE_PCS1GANA_ASM_PAUSE);
2326 * ixgbe_fc_autoneg_backplane - Enable flow control IEEE clause 37
2327 * @hw: pointer to hardware structure
2329 * Enable flow control according to IEEE clause 37.
2331 static s32 ixgbe_fc_autoneg_backplane(struct ixgbe_hw *hw)
2333 u32 links2, anlp1_reg, autoc_reg, links;
2337 * On backplane, bail out if
2338 * - backplane autoneg was not completed, or if
2339 * - we are 82599 and link partner is not AN enabled
2341 links = IXGBE_READ_REG(hw, IXGBE_LINKS);
2342 if ((links & IXGBE_LINKS_KX_AN_COMP) == 0)
2345 if (hw->mac.type == ixgbe_mac_82599EB) {
2346 links2 = IXGBE_READ_REG(hw, IXGBE_LINKS2);
2347 if ((links2 & IXGBE_LINKS2_AN_SUPPORTED) == 0)
2351 * Read the 10g AN autoc and LP ability registers and resolve
2352 * local flow control settings accordingly
2354 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
2355 anlp1_reg = IXGBE_READ_REG(hw, IXGBE_ANLP1);
2357 ret_val = ixgbe_negotiate_fc(hw, autoc_reg,
2358 anlp1_reg, IXGBE_AUTOC_SYM_PAUSE, IXGBE_AUTOC_ASM_PAUSE,
2359 IXGBE_ANLP1_SYM_PAUSE, IXGBE_ANLP1_ASM_PAUSE);
2365 * ixgbe_fc_autoneg_copper - Enable flow control IEEE clause 37
2366 * @hw: pointer to hardware structure
2368 * Enable flow control according to IEEE clause 37.
2370 static s32 ixgbe_fc_autoneg_copper(struct ixgbe_hw *hw)
2372 u16 technology_ability_reg = 0;
2373 u16 lp_technology_ability_reg = 0;
2375 hw->phy.ops.read_reg(hw, MDIO_AN_ADVERTISE,
2377 &technology_ability_reg);
2378 hw->phy.ops.read_reg(hw, MDIO_AN_LPA,
2380 &lp_technology_ability_reg);
2382 return ixgbe_negotiate_fc(hw, (u32)technology_ability_reg,
2383 (u32)lp_technology_ability_reg,
2384 IXGBE_TAF_SYM_PAUSE, IXGBE_TAF_ASM_PAUSE,
2385 IXGBE_TAF_SYM_PAUSE, IXGBE_TAF_ASM_PAUSE);
2389 * ixgbe_fc_autoneg - Configure flow control
2390 * @hw: pointer to hardware structure
2392 * Compares our advertised flow control capabilities to those advertised by
2393 * our link partner, and determines the proper flow control mode to use.
2395 void ixgbe_fc_autoneg(struct ixgbe_hw *hw)
2397 ixgbe_link_speed speed;
2402 * AN should have completed when the cable was plugged in.
2403 * Look for reasons to bail out. Bail out if:
2404 * - FC autoneg is disabled, or if
2407 * Since we're being called from an LSC, link is already known to be up.
2408 * So use link_up_wait_to_complete=false.
2410 if (hw->fc.disable_fc_autoneg)
2413 hw->mac.ops.check_link(hw, &speed, &link_up, false);
2417 switch (hw->phy.media_type) {
2418 /* Autoneg flow control on fiber adapters */
2419 case ixgbe_media_type_fiber:
2420 if (speed == IXGBE_LINK_SPEED_1GB_FULL)
2421 ret_val = ixgbe_fc_autoneg_fiber(hw);
2424 /* Autoneg flow control on backplane adapters */
2425 case ixgbe_media_type_backplane:
2426 ret_val = ixgbe_fc_autoneg_backplane(hw);
2429 /* Autoneg flow control on copper adapters */
2430 case ixgbe_media_type_copper:
2431 if (ixgbe_device_supports_autoneg_fc(hw))
2432 ret_val = ixgbe_fc_autoneg_copper(hw);
2441 hw->fc.fc_was_autonegged = true;
2443 hw->fc.fc_was_autonegged = false;
2444 hw->fc.current_mode = hw->fc.requested_mode;
2449 * ixgbe_pcie_timeout_poll - Return number of times to poll for completion
2450 * @hw: pointer to hardware structure
2452 * System-wide timeout range is encoded in PCIe Device Control2 register.
2454 * Add 10% to specified maximum and return the number of times to poll for
2455 * completion timeout, in units of 100 microsec. Never return less than
2456 * 800 = 80 millisec.
2458 static u32 ixgbe_pcie_timeout_poll(struct ixgbe_hw *hw)
2463 devctl2 = ixgbe_read_pci_cfg_word(hw, IXGBE_PCI_DEVICE_CONTROL2);
2464 devctl2 &= IXGBE_PCIDEVCTRL2_TIMEO_MASK;
2467 case IXGBE_PCIDEVCTRL2_65_130ms:
2468 pollcnt = 1300; /* 130 millisec */
2470 case IXGBE_PCIDEVCTRL2_260_520ms:
2471 pollcnt = 5200; /* 520 millisec */
2473 case IXGBE_PCIDEVCTRL2_1_2s:
2474 pollcnt = 20000; /* 2 sec */
2476 case IXGBE_PCIDEVCTRL2_4_8s:
2477 pollcnt = 80000; /* 8 sec */
2479 case IXGBE_PCIDEVCTRL2_17_34s:
2480 pollcnt = 34000; /* 34 sec */
2482 case IXGBE_PCIDEVCTRL2_50_100us: /* 100 microsecs */
2483 case IXGBE_PCIDEVCTRL2_1_2ms: /* 2 millisecs */
2484 case IXGBE_PCIDEVCTRL2_16_32ms: /* 32 millisec */
2485 case IXGBE_PCIDEVCTRL2_16_32ms_def: /* 32 millisec default */
2487 pollcnt = 800; /* 80 millisec minimum */
2491 /* add 10% to spec maximum */
2492 return (pollcnt * 11) / 10;
2496 * ixgbe_disable_pcie_primary - Disable PCI-express primary access
2497 * @hw: pointer to hardware structure
2499 * Disables PCI-Express primary access and verifies there are no pending
2500 * requests. -EALREADY is returned if primary disable
2501 * bit hasn't caused the primary requests to be disabled, else 0
2502 * is returned signifying primary requests disabled.
2504 static s32 ixgbe_disable_pcie_primary(struct ixgbe_hw *hw)
2509 /* Always set this bit to ensure any future transactions are blocked */
2510 IXGBE_WRITE_REG(hw, IXGBE_CTRL, IXGBE_CTRL_GIO_DIS);
2512 /* Poll for bit to read as set */
2513 for (i = 0; i < IXGBE_PCI_PRIMARY_DISABLE_TIMEOUT; i++) {
2514 if (IXGBE_READ_REG(hw, IXGBE_CTRL) & IXGBE_CTRL_GIO_DIS)
2516 usleep_range(100, 120);
2518 if (i >= IXGBE_PCI_PRIMARY_DISABLE_TIMEOUT) {
2519 hw_dbg(hw, "GIO disable did not set - requesting resets\n");
2520 goto gio_disable_fail;
2523 /* Exit if primary requests are blocked */
2524 if (!(IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_GIO) ||
2525 ixgbe_removed(hw->hw_addr))
2528 /* Poll for primary request bit to clear */
2529 for (i = 0; i < IXGBE_PCI_PRIMARY_DISABLE_TIMEOUT; i++) {
2531 if (!(IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_GIO))
2536 * Two consecutive resets are required via CTRL.RST per datasheet
2537 * 5.2.5.3.2 Primary Disable. We set a flag to inform the reset routine
2538 * of this need. The first reset prevents new primary requests from
2539 * being issued by our device. We then must wait 1usec or more for any
2540 * remaining completions from the PCIe bus to trickle in, and then reset
2541 * again to clear out any effects they may have had on our device.
2543 hw_dbg(hw, "GIO Primary Disable bit didn't clear - requesting resets\n");
2545 hw->mac.flags |= IXGBE_FLAGS_DOUBLE_RESET_REQUIRED;
2547 if (hw->mac.type >= ixgbe_mac_X550)
2551 * Before proceeding, make sure that the PCIe block does not have
2552 * transactions pending.
2554 poll = ixgbe_pcie_timeout_poll(hw);
2555 for (i = 0; i < poll; i++) {
2557 value = ixgbe_read_pci_cfg_word(hw, IXGBE_PCI_DEVICE_STATUS);
2558 if (ixgbe_removed(hw->hw_addr))
2560 if (!(value & IXGBE_PCI_DEVICE_STATUS_TRANSACTION_PENDING))
2564 hw_dbg(hw, "PCIe transaction pending bit also did not clear.\n");
2569 * ixgbe_acquire_swfw_sync - Acquire SWFW semaphore
2570 * @hw: pointer to hardware structure
2571 * @mask: Mask to specify which semaphore to acquire
2573 * Acquires the SWFW semaphore through the GSSR register for the specified
2574 * function (CSR, PHY0, PHY1, EEPROM, Flash)
2576 s32 ixgbe_acquire_swfw_sync(struct ixgbe_hw *hw, u32 mask)
2580 u32 fwmask = mask << 5;
2584 for (i = 0; i < timeout; i++) {
2586 * SW NVM semaphore bit is used for access to all
2587 * SW_FW_SYNC bits (not just NVM)
2589 if (ixgbe_get_eeprom_semaphore(hw))
2592 gssr = IXGBE_READ_REG(hw, IXGBE_GSSR);
2593 if (!(gssr & (fwmask | swmask))) {
2595 IXGBE_WRITE_REG(hw, IXGBE_GSSR, gssr);
2596 ixgbe_release_eeprom_semaphore(hw);
2599 /* Resource is currently in use by FW or SW */
2600 ixgbe_release_eeprom_semaphore(hw);
2601 usleep_range(5000, 10000);
2605 /* If time expired clear the bits holding the lock and retry */
2606 if (gssr & (fwmask | swmask))
2607 ixgbe_release_swfw_sync(hw, gssr & (fwmask | swmask));
2609 usleep_range(5000, 10000);
2614 * ixgbe_release_swfw_sync - Release SWFW semaphore
2615 * @hw: pointer to hardware structure
2616 * @mask: Mask to specify which semaphore to release
2618 * Releases the SWFW semaphore through the GSSR register for the specified
2619 * function (CSR, PHY0, PHY1, EEPROM, Flash)
2621 void ixgbe_release_swfw_sync(struct ixgbe_hw *hw, u32 mask)
2626 ixgbe_get_eeprom_semaphore(hw);
2628 gssr = IXGBE_READ_REG(hw, IXGBE_GSSR);
2630 IXGBE_WRITE_REG(hw, IXGBE_GSSR, gssr);
2632 ixgbe_release_eeprom_semaphore(hw);
2636 * prot_autoc_read_generic - Hides MAC differences needed for AUTOC read
2637 * @hw: pointer to hardware structure
2638 * @reg_val: Value we read from AUTOC
2639 * @locked: bool to indicate whether the SW/FW lock should be taken. Never
2640 * true in this the generic case.
2642 * The default case requires no protection so just to the register read.
2644 s32 prot_autoc_read_generic(struct ixgbe_hw *hw, bool *locked, u32 *reg_val)
2647 *reg_val = IXGBE_READ_REG(hw, IXGBE_AUTOC);
2652 * prot_autoc_write_generic - Hides MAC differences needed for AUTOC write
2653 * @hw: pointer to hardware structure
2654 * @reg_val: value to write to AUTOC
2655 * @locked: bool to indicate whether the SW/FW lock was already taken by
2658 s32 prot_autoc_write_generic(struct ixgbe_hw *hw, u32 reg_val, bool locked)
2660 IXGBE_WRITE_REG(hw, IXGBE_AUTOC, reg_val);
2665 * ixgbe_disable_rx_buff_generic - Stops the receive data path
2666 * @hw: pointer to hardware structure
2668 * Stops the receive data path and waits for the HW to internally
2669 * empty the Rx security block.
2671 s32 ixgbe_disable_rx_buff_generic(struct ixgbe_hw *hw)
2673 #define IXGBE_MAX_SECRX_POLL 40
2677 secrxreg = IXGBE_READ_REG(hw, IXGBE_SECRXCTRL);
2678 secrxreg |= IXGBE_SECRXCTRL_RX_DIS;
2679 IXGBE_WRITE_REG(hw, IXGBE_SECRXCTRL, secrxreg);
2680 for (i = 0; i < IXGBE_MAX_SECRX_POLL; i++) {
2681 secrxreg = IXGBE_READ_REG(hw, IXGBE_SECRXSTAT);
2682 if (secrxreg & IXGBE_SECRXSTAT_SECRX_RDY)
2685 /* Use interrupt-safe sleep just in case */
2689 /* For informational purposes only */
2690 if (i >= IXGBE_MAX_SECRX_POLL)
2691 hw_dbg(hw, "Rx unit being enabled before security path fully disabled. Continuing with init.\n");
2698 * ixgbe_enable_rx_buff - Enables the receive data path
2699 * @hw: pointer to hardware structure
2701 * Enables the receive data path
2703 s32 ixgbe_enable_rx_buff_generic(struct ixgbe_hw *hw)
2707 secrxreg = IXGBE_READ_REG(hw, IXGBE_SECRXCTRL);
2708 secrxreg &= ~IXGBE_SECRXCTRL_RX_DIS;
2709 IXGBE_WRITE_REG(hw, IXGBE_SECRXCTRL, secrxreg);
2710 IXGBE_WRITE_FLUSH(hw);
2716 * ixgbe_enable_rx_dma_generic - Enable the Rx DMA unit
2717 * @hw: pointer to hardware structure
2718 * @regval: register value to write to RXCTRL
2720 * Enables the Rx DMA unit
2722 s32 ixgbe_enable_rx_dma_generic(struct ixgbe_hw *hw, u32 regval)
2724 if (regval & IXGBE_RXCTRL_RXEN)
2725 hw->mac.ops.enable_rx(hw);
2727 hw->mac.ops.disable_rx(hw);
2733 * ixgbe_blink_led_start_generic - Blink LED based on index.
2734 * @hw: pointer to hardware structure
2735 * @index: led number to blink
2737 s32 ixgbe_blink_led_start_generic(struct ixgbe_hw *hw, u32 index)
2739 ixgbe_link_speed speed = 0;
2740 bool link_up = false;
2741 u32 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
2742 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
2743 bool locked = false;
2750 * Link must be up to auto-blink the LEDs;
2751 * Force it if link is down.
2753 hw->mac.ops.check_link(hw, &speed, &link_up, false);
2756 ret_val = hw->mac.ops.prot_autoc_read(hw, &locked, &autoc_reg);
2760 autoc_reg |= IXGBE_AUTOC_AN_RESTART;
2761 autoc_reg |= IXGBE_AUTOC_FLU;
2763 ret_val = hw->mac.ops.prot_autoc_write(hw, autoc_reg, locked);
2767 IXGBE_WRITE_FLUSH(hw);
2769 usleep_range(10000, 20000);
2772 led_reg &= ~IXGBE_LED_MODE_MASK(index);
2773 led_reg |= IXGBE_LED_BLINK(index);
2774 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
2775 IXGBE_WRITE_FLUSH(hw);
2781 * ixgbe_blink_led_stop_generic - Stop blinking LED based on index.
2782 * @hw: pointer to hardware structure
2783 * @index: led number to stop blinking
2785 s32 ixgbe_blink_led_stop_generic(struct ixgbe_hw *hw, u32 index)
2788 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
2789 bool locked = false;
2795 ret_val = hw->mac.ops.prot_autoc_read(hw, &locked, &autoc_reg);
2799 autoc_reg &= ~IXGBE_AUTOC_FLU;
2800 autoc_reg |= IXGBE_AUTOC_AN_RESTART;
2802 ret_val = hw->mac.ops.prot_autoc_write(hw, autoc_reg, locked);
2806 led_reg &= ~IXGBE_LED_MODE_MASK(index);
2807 led_reg &= ~IXGBE_LED_BLINK(index);
2808 led_reg |= IXGBE_LED_LINK_ACTIVE << IXGBE_LED_MODE_SHIFT(index);
2809 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
2810 IXGBE_WRITE_FLUSH(hw);
2816 * ixgbe_get_san_mac_addr_offset - Get SAN MAC address offset from the EEPROM
2817 * @hw: pointer to hardware structure
2818 * @san_mac_offset: SAN MAC address offset
2820 * This function will read the EEPROM location for the SAN MAC address
2821 * pointer, and returns the value at that location. This is used in both
2822 * get and set mac_addr routines.
2824 static s32 ixgbe_get_san_mac_addr_offset(struct ixgbe_hw *hw,
2825 u16 *san_mac_offset)
2830 * First read the EEPROM pointer to see if the MAC addresses are
2833 ret_val = hw->eeprom.ops.read(hw, IXGBE_SAN_MAC_ADDR_PTR,
2836 hw_err(hw, "eeprom read at offset %d failed\n",
2837 IXGBE_SAN_MAC_ADDR_PTR);
2843 * ixgbe_get_san_mac_addr_generic - SAN MAC address retrieval from the EEPROM
2844 * @hw: pointer to hardware structure
2845 * @san_mac_addr: SAN MAC address
2847 * Reads the SAN MAC address from the EEPROM, if it's available. This is
2848 * per-port, so set_lan_id() must be called before reading the addresses.
2849 * set_lan_id() is called by identify_sfp(), but this cannot be relied
2850 * upon for non-SFP connections, so we must call it here.
2852 s32 ixgbe_get_san_mac_addr_generic(struct ixgbe_hw *hw, u8 *san_mac_addr)
2854 u16 san_mac_data, san_mac_offset;
2859 * First read the EEPROM pointer to see if the MAC addresses are
2860 * available. If they're not, no point in calling set_lan_id() here.
2862 ret_val = ixgbe_get_san_mac_addr_offset(hw, &san_mac_offset);
2863 if (ret_val || san_mac_offset == 0 || san_mac_offset == 0xFFFF)
2865 goto san_mac_addr_clr;
2867 /* make sure we know which port we need to program */
2868 hw->mac.ops.set_lan_id(hw);
2869 /* apply the port offset to the address offset */
2870 (hw->bus.func) ? (san_mac_offset += IXGBE_SAN_MAC_ADDR_PORT1_OFFSET) :
2871 (san_mac_offset += IXGBE_SAN_MAC_ADDR_PORT0_OFFSET);
2872 for (i = 0; i < 3; i++) {
2873 ret_val = hw->eeprom.ops.read(hw, san_mac_offset,
2876 hw_err(hw, "eeprom read at offset %d failed\n",
2878 goto san_mac_addr_clr;
2880 san_mac_addr[i * 2] = (u8)(san_mac_data);
2881 san_mac_addr[i * 2 + 1] = (u8)(san_mac_data >> 8);
2887 /* No addresses available in this EEPROM. It's not necessarily an
2888 * error though, so just wipe the local address and return.
2890 for (i = 0; i < 6; i++)
2891 san_mac_addr[i] = 0xFF;
2896 * ixgbe_get_pcie_msix_count_generic - Gets MSI-X vector count
2897 * @hw: pointer to hardware structure
2899 * Read PCIe configuration space, and get the MSI-X vector count from
2900 * the capabilities table.
2902 u16 ixgbe_get_pcie_msix_count_generic(struct ixgbe_hw *hw)
2908 switch (hw->mac.type) {
2909 case ixgbe_mac_82598EB:
2910 pcie_offset = IXGBE_PCIE_MSIX_82598_CAPS;
2911 max_msix_count = IXGBE_MAX_MSIX_VECTORS_82598;
2913 case ixgbe_mac_82599EB:
2914 case ixgbe_mac_X540:
2915 case ixgbe_mac_X550:
2916 case ixgbe_mac_X550EM_x:
2917 case ixgbe_mac_x550em_a:
2918 pcie_offset = IXGBE_PCIE_MSIX_82599_CAPS;
2919 max_msix_count = IXGBE_MAX_MSIX_VECTORS_82599;
2925 msix_count = ixgbe_read_pci_cfg_word(hw, pcie_offset);
2926 if (ixgbe_removed(hw->hw_addr))
2928 msix_count &= IXGBE_PCIE_MSIX_TBL_SZ_MASK;
2930 /* MSI-X count is zero-based in HW */
2933 if (msix_count > max_msix_count)
2934 msix_count = max_msix_count;
2940 * ixgbe_clear_vmdq_generic - Disassociate a VMDq pool index from a rx address
2941 * @hw: pointer to hardware struct
2942 * @rar: receive address register index to disassociate
2943 * @vmdq: VMDq pool index to remove from the rar
2945 s32 ixgbe_clear_vmdq_generic(struct ixgbe_hw *hw, u32 rar, u32 vmdq)
2947 u32 mpsar_lo, mpsar_hi;
2948 u32 rar_entries = hw->mac.num_rar_entries;
2950 /* Make sure we are using a valid rar index range */
2951 if (rar >= rar_entries) {
2952 hw_dbg(hw, "RAR index %d is out of range.\n", rar);
2956 mpsar_lo = IXGBE_READ_REG(hw, IXGBE_MPSAR_LO(rar));
2957 mpsar_hi = IXGBE_READ_REG(hw, IXGBE_MPSAR_HI(rar));
2959 if (ixgbe_removed(hw->hw_addr))
2962 if (!mpsar_lo && !mpsar_hi)
2965 if (vmdq == IXGBE_CLEAR_VMDQ_ALL) {
2967 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), 0);
2971 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), 0);
2974 } else if (vmdq < 32) {
2975 mpsar_lo &= ~BIT(vmdq);
2976 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), mpsar_lo);
2978 mpsar_hi &= ~BIT(vmdq - 32);
2979 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), mpsar_hi);
2982 /* was that the last pool using this rar? */
2983 if (mpsar_lo == 0 && mpsar_hi == 0 &&
2984 rar != 0 && rar != hw->mac.san_mac_rar_index)
2985 hw->mac.ops.clear_rar(hw, rar);
2991 * ixgbe_set_vmdq_generic - Associate a VMDq pool index with a rx address
2992 * @hw: pointer to hardware struct
2993 * @rar: receive address register index to associate with a VMDq index
2994 * @vmdq: VMDq pool index
2996 s32 ixgbe_set_vmdq_generic(struct ixgbe_hw *hw, u32 rar, u32 vmdq)
2999 u32 rar_entries = hw->mac.num_rar_entries;
3001 /* Make sure we are using a valid rar index range */
3002 if (rar >= rar_entries) {
3003 hw_dbg(hw, "RAR index %d is out of range.\n", rar);
3008 mpsar = IXGBE_READ_REG(hw, IXGBE_MPSAR_LO(rar));
3010 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), mpsar);
3012 mpsar = IXGBE_READ_REG(hw, IXGBE_MPSAR_HI(rar));
3013 mpsar |= BIT(vmdq - 32);
3014 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), mpsar);
3020 * This function should only be involved in the IOV mode.
3021 * In IOV mode, Default pool is next pool after the number of
3022 * VFs advertized and not 0.
3023 * MPSAR table needs to be updated for SAN_MAC RAR [hw->mac.san_mac_rar_index]
3025 * ixgbe_set_vmdq_san_mac - Associate default VMDq pool index with a rx address
3026 * @hw: pointer to hardware struct
3027 * @vmdq: VMDq pool index
3029 s32 ixgbe_set_vmdq_san_mac_generic(struct ixgbe_hw *hw, u32 vmdq)
3031 u32 rar = hw->mac.san_mac_rar_index;
3034 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), BIT(vmdq));
3035 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), 0);
3037 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), 0);
3038 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), BIT(vmdq - 32));
3045 * ixgbe_init_uta_tables_generic - Initialize the Unicast Table Array
3046 * @hw: pointer to hardware structure
3048 s32 ixgbe_init_uta_tables_generic(struct ixgbe_hw *hw)
3052 for (i = 0; i < 128; i++)
3053 IXGBE_WRITE_REG(hw, IXGBE_UTA(i), 0);
3059 * ixgbe_find_vlvf_slot - find the vlanid or the first empty slot
3060 * @hw: pointer to hardware structure
3061 * @vlan: VLAN id to write to VLAN filter
3062 * @vlvf_bypass: true to find vlanid only, false returns first empty slot if
3065 * return the VLVF index where this VLAN id should be placed
3068 static s32 ixgbe_find_vlvf_slot(struct ixgbe_hw *hw, u32 vlan, bool vlvf_bypass)
3070 s32 regindex, first_empty_slot;
3073 /* short cut the special case */
3077 /* if vlvf_bypass is set we don't want to use an empty slot, we
3078 * will simply bypass the VLVF if there are no entries present in the
3079 * VLVF that contain our VLAN
3081 first_empty_slot = vlvf_bypass ? -ENOSPC : 0;
3083 /* add VLAN enable bit for comparison */
3084 vlan |= IXGBE_VLVF_VIEN;
3086 /* Search for the vlan id in the VLVF entries. Save off the first empty
3087 * slot found along the way.
3089 * pre-decrement loop covering (IXGBE_VLVF_ENTRIES - 1) .. 1
3091 for (regindex = IXGBE_VLVF_ENTRIES; --regindex;) {
3092 bits = IXGBE_READ_REG(hw, IXGBE_VLVF(regindex));
3095 if (!first_empty_slot && !bits)
3096 first_empty_slot = regindex;
3099 /* If we are here then we didn't find the VLAN. Return first empty
3100 * slot we found during our search, else error.
3102 if (!first_empty_slot)
3103 hw_dbg(hw, "No space in VLVF.\n");
3105 return first_empty_slot ? : -ENOSPC;
3109 * ixgbe_set_vfta_generic - Set VLAN filter table
3110 * @hw: pointer to hardware structure
3111 * @vlan: VLAN id to write to VLAN filter
3112 * @vind: VMDq output index that maps queue to VLAN id in VFVFB
3113 * @vlan_on: boolean flag to turn on/off VLAN in VFVF
3114 * @vlvf_bypass: boolean flag indicating updating default pool is okay
3116 * Turn on/off specified VLAN in the VLAN filter table.
3118 s32 ixgbe_set_vfta_generic(struct ixgbe_hw *hw, u32 vlan, u32 vind,
3119 bool vlan_on, bool vlvf_bypass)
3121 u32 regidx, vfta_delta, vfta, bits;
3124 if ((vlan > 4095) || (vind > 63))
3128 * this is a 2 part operation - first the VFTA, then the
3129 * VLVF and VLVFB if VT Mode is set
3130 * We don't write the VFTA until we know the VLVF part succeeded.
3134 * The VFTA is a bitstring made up of 128 32-bit registers
3135 * that enable the particular VLAN id, much like the MTA:
3136 * bits[11-5]: which register
3137 * bits[4-0]: which bit in the register
3140 vfta_delta = BIT(vlan % 32);
3141 vfta = IXGBE_READ_REG(hw, IXGBE_VFTA(regidx));
3143 /* vfta_delta represents the difference between the current value
3144 * of vfta and the value we want in the register. Since the diff
3145 * is an XOR mask we can just update vfta using an XOR.
3147 vfta_delta &= vlan_on ? ~vfta : vfta;
3153 * make sure the vlan is in VLVF
3154 * set the vind bit in the matching VLVFB
3156 * clear the pool bit and possibly the vind
3158 if (!(IXGBE_READ_REG(hw, IXGBE_VT_CTL) & IXGBE_VT_CTL_VT_ENABLE))
3161 vlvf_index = ixgbe_find_vlvf_slot(hw, vlan, vlvf_bypass);
3162 if (vlvf_index < 0) {
3168 bits = IXGBE_READ_REG(hw, IXGBE_VLVFB(vlvf_index * 2 + vind / 32));
3170 /* set the pool bit */
3171 bits |= BIT(vind % 32);
3175 /* clear the pool bit */
3176 bits ^= BIT(vind % 32);
3179 !IXGBE_READ_REG(hw, IXGBE_VLVFB(vlvf_index * 2 + 1 - vind / 32))) {
3180 /* Clear VFTA first, then disable VLVF. Otherwise
3181 * we run the risk of stray packets leaking into
3182 * the PF via the default pool
3185 IXGBE_WRITE_REG(hw, IXGBE_VFTA(regidx), vfta);
3187 /* disable VLVF and clear remaining bit from pool */
3188 IXGBE_WRITE_REG(hw, IXGBE_VLVF(vlvf_index), 0);
3189 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(vlvf_index * 2 + vind / 32), 0);
3194 /* If there are still bits set in the VLVFB registers
3195 * for the VLAN ID indicated we need to see if the
3196 * caller is requesting that we clear the VFTA entry bit.
3197 * If the caller has requested that we clear the VFTA
3198 * entry bit but there are still pools/VFs using this VLAN
3199 * ID entry then ignore the request. We're not worried
3200 * about the case where we're turning the VFTA VLAN ID
3201 * entry bit on, only when requested to turn it off as
3202 * there may be multiple pools and/or VFs using the
3203 * VLAN ID entry. In that case we cannot clear the
3204 * VFTA bit until all pools/VFs using that VLAN ID have also
3205 * been cleared. This will be indicated by "bits" being
3211 /* record pool change and enable VLAN ID if not already enabled */
3212 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(vlvf_index * 2 + vind / 32), bits);
3213 IXGBE_WRITE_REG(hw, IXGBE_VLVF(vlvf_index), IXGBE_VLVF_VIEN | vlan);
3216 /* Update VFTA now that we are ready for traffic */
3218 IXGBE_WRITE_REG(hw, IXGBE_VFTA(regidx), vfta);
3224 * ixgbe_clear_vfta_generic - Clear VLAN filter table
3225 * @hw: pointer to hardware structure
3227 * Clears the VLAN filer table, and the VMDq index associated with the filter
3229 s32 ixgbe_clear_vfta_generic(struct ixgbe_hw *hw)
3233 for (offset = 0; offset < hw->mac.vft_size; offset++)
3234 IXGBE_WRITE_REG(hw, IXGBE_VFTA(offset), 0);
3236 for (offset = 0; offset < IXGBE_VLVF_ENTRIES; offset++) {
3237 IXGBE_WRITE_REG(hw, IXGBE_VLVF(offset), 0);
3238 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(offset * 2), 0);
3239 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(offset * 2 + 1), 0);
3246 * ixgbe_need_crosstalk_fix - Determine if we need to do cross talk fix
3247 * @hw: pointer to hardware structure
3249 * Contains the logic to identify if we need to verify link for the
3252 static bool ixgbe_need_crosstalk_fix(struct ixgbe_hw *hw)
3254 /* Does FW say we need the fix */
3255 if (!hw->need_crosstalk_fix)
3258 /* Only consider SFP+ PHYs i.e. media type fiber */
3259 switch (hw->mac.ops.get_media_type(hw)) {
3260 case ixgbe_media_type_fiber:
3261 case ixgbe_media_type_fiber_qsfp:
3271 * ixgbe_check_mac_link_generic - Determine link and speed status
3272 * @hw: pointer to hardware structure
3273 * @speed: pointer to link speed
3274 * @link_up: true when link is up
3275 * @link_up_wait_to_complete: bool used to wait for link up or not
3277 * Reads the links register to determine if link is up and the current speed
3279 s32 ixgbe_check_mac_link_generic(struct ixgbe_hw *hw, ixgbe_link_speed *speed,
3280 bool *link_up, bool link_up_wait_to_complete)
3282 u32 links_reg, links_orig;
3285 /* If Crosstalk fix enabled do the sanity check of making sure
3286 * the SFP+ cage is full.
3288 if (ixgbe_need_crosstalk_fix(hw)) {
3291 switch (hw->mac.type) {
3292 case ixgbe_mac_82599EB:
3293 sfp_cage_full = IXGBE_READ_REG(hw, IXGBE_ESDP) &
3296 case ixgbe_mac_X550EM_x:
3297 case ixgbe_mac_x550em_a:
3298 sfp_cage_full = IXGBE_READ_REG(hw, IXGBE_ESDP) &
3302 /* sanity check - No SFP+ devices here */
3303 sfp_cage_full = false;
3307 if (!sfp_cage_full) {
3309 *speed = IXGBE_LINK_SPEED_UNKNOWN;
3314 /* clear the old state */
3315 links_orig = IXGBE_READ_REG(hw, IXGBE_LINKS);
3317 links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
3319 if (links_orig != links_reg) {
3320 hw_dbg(hw, "LINKS changed from %08X to %08X\n",
3321 links_orig, links_reg);
3324 if (link_up_wait_to_complete) {
3325 for (i = 0; i < IXGBE_LINK_UP_TIME; i++) {
3326 if (links_reg & IXGBE_LINKS_UP) {
3333 links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
3336 if (links_reg & IXGBE_LINKS_UP)
3342 switch (links_reg & IXGBE_LINKS_SPEED_82599) {
3343 case IXGBE_LINKS_SPEED_10G_82599:
3344 if ((hw->mac.type >= ixgbe_mac_X550) &&
3345 (links_reg & IXGBE_LINKS_SPEED_NON_STD))
3346 *speed = IXGBE_LINK_SPEED_2_5GB_FULL;
3348 *speed = IXGBE_LINK_SPEED_10GB_FULL;
3350 case IXGBE_LINKS_SPEED_1G_82599:
3351 *speed = IXGBE_LINK_SPEED_1GB_FULL;
3353 case IXGBE_LINKS_SPEED_100_82599:
3354 if ((hw->mac.type >= ixgbe_mac_X550) &&
3355 (links_reg & IXGBE_LINKS_SPEED_NON_STD))
3356 *speed = IXGBE_LINK_SPEED_5GB_FULL;
3358 *speed = IXGBE_LINK_SPEED_100_FULL;
3360 case IXGBE_LINKS_SPEED_10_X550EM_A:
3361 *speed = IXGBE_LINK_SPEED_UNKNOWN;
3362 if (hw->device_id == IXGBE_DEV_ID_X550EM_A_1G_T ||
3363 hw->device_id == IXGBE_DEV_ID_X550EM_A_1G_T_L) {
3364 *speed = IXGBE_LINK_SPEED_10_FULL;
3368 *speed = IXGBE_LINK_SPEED_UNKNOWN;
3375 * ixgbe_get_wwn_prefix_generic - Get alternative WWNN/WWPN prefix from
3377 * @hw: pointer to hardware structure
3378 * @wwnn_prefix: the alternative WWNN prefix
3379 * @wwpn_prefix: the alternative WWPN prefix
3381 * This function will read the EEPROM from the alternative SAN MAC address
3382 * block to check the support for the alternative WWNN/WWPN prefix support.
3384 s32 ixgbe_get_wwn_prefix_generic(struct ixgbe_hw *hw, u16 *wwnn_prefix,
3388 u16 alt_san_mac_blk_offset;
3390 /* clear output first */
3391 *wwnn_prefix = 0xFFFF;
3392 *wwpn_prefix = 0xFFFF;
3394 /* check if alternative SAN MAC is supported */
3395 offset = IXGBE_ALT_SAN_MAC_ADDR_BLK_PTR;
3396 if (hw->eeprom.ops.read(hw, offset, &alt_san_mac_blk_offset))
3397 goto wwn_prefix_err;
3399 if ((alt_san_mac_blk_offset == 0) ||
3400 (alt_san_mac_blk_offset == 0xFFFF))
3403 /* check capability in alternative san mac address block */
3404 offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_CAPS_OFFSET;
3405 if (hw->eeprom.ops.read(hw, offset, &caps))
3406 goto wwn_prefix_err;
3407 if (!(caps & IXGBE_ALT_SAN_MAC_ADDR_CAPS_ALTWWN))
3410 /* get the corresponding prefix for WWNN/WWPN */
3411 offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_WWNN_OFFSET;
3412 if (hw->eeprom.ops.read(hw, offset, wwnn_prefix))
3413 hw_err(hw, "eeprom read at offset %d failed\n", offset);
3415 offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_WWPN_OFFSET;
3416 if (hw->eeprom.ops.read(hw, offset, wwpn_prefix))
3417 goto wwn_prefix_err;
3422 hw_err(hw, "eeprom read at offset %d failed\n", offset);
3427 * ixgbe_set_mac_anti_spoofing - Enable/Disable MAC anti-spoofing
3428 * @hw: pointer to hardware structure
3429 * @enable: enable or disable switch for MAC anti-spoofing
3430 * @vf: Virtual Function pool - VF Pool to set for MAC anti-spoofing
3433 void ixgbe_set_mac_anti_spoofing(struct ixgbe_hw *hw, bool enable, int vf)
3435 int vf_target_reg = vf >> 3;
3436 int vf_target_shift = vf % 8;
3439 if (hw->mac.type == ixgbe_mac_82598EB)
3442 pfvfspoof = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg));
3444 pfvfspoof |= BIT(vf_target_shift);
3446 pfvfspoof &= ~BIT(vf_target_shift);
3447 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), pfvfspoof);
3451 * ixgbe_set_vlan_anti_spoofing - Enable/Disable VLAN anti-spoofing
3452 * @hw: pointer to hardware structure
3453 * @enable: enable or disable switch for VLAN anti-spoofing
3454 * @vf: Virtual Function pool - VF Pool to set for VLAN anti-spoofing
3457 void ixgbe_set_vlan_anti_spoofing(struct ixgbe_hw *hw, bool enable, int vf)
3459 int vf_target_reg = vf >> 3;
3460 int vf_target_shift = vf % 8 + IXGBE_SPOOF_VLANAS_SHIFT;
3463 if (hw->mac.type == ixgbe_mac_82598EB)
3466 pfvfspoof = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg));
3468 pfvfspoof |= BIT(vf_target_shift);
3470 pfvfspoof &= ~BIT(vf_target_shift);
3471 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), pfvfspoof);
3475 * ixgbe_get_device_caps_generic - Get additional device capabilities
3476 * @hw: pointer to hardware structure
3477 * @device_caps: the EEPROM word with the extra device capabilities
3479 * This function will read the EEPROM location for the device capabilities,
3480 * and return the word through device_caps.
3482 s32 ixgbe_get_device_caps_generic(struct ixgbe_hw *hw, u16 *device_caps)
3484 hw->eeprom.ops.read(hw, IXGBE_DEVICE_CAPS, device_caps);
3490 * ixgbe_set_rxpba_generic - Initialize RX packet buffer
3491 * @hw: pointer to hardware structure
3492 * @num_pb: number of packet buffers to allocate
3493 * @headroom: reserve n KB of headroom
3494 * @strategy: packet buffer allocation strategy
3496 void ixgbe_set_rxpba_generic(struct ixgbe_hw *hw,
3501 u32 pbsize = hw->mac.rx_pb_size;
3503 u32 rxpktsize, txpktsize, txpbthresh;
3505 /* Reserve headroom */
3511 /* Divide remaining packet buffer space amongst the number
3512 * of packet buffers requested using supplied strategy.
3515 case (PBA_STRATEGY_WEIGHTED):
3516 /* pba_80_48 strategy weight first half of packet buffer with
3517 * 5/8 of the packet buffer space.
3519 rxpktsize = ((pbsize * 5 * 2) / (num_pb * 8));
3520 pbsize -= rxpktsize * (num_pb / 2);
3521 rxpktsize <<= IXGBE_RXPBSIZE_SHIFT;
3522 for (; i < (num_pb / 2); i++)
3523 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpktsize);
3524 fallthrough; /* configure remaining packet buffers */
3525 case (PBA_STRATEGY_EQUAL):
3526 /* Divide the remaining Rx packet buffer evenly among the TCs */
3527 rxpktsize = (pbsize / (num_pb - i)) << IXGBE_RXPBSIZE_SHIFT;
3528 for (; i < num_pb; i++)
3529 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpktsize);
3536 * Setup Tx packet buffer and threshold equally for all TCs
3537 * TXPBTHRESH register is set in K so divide by 1024 and subtract
3538 * 10 since the largest packet we support is just over 9K.
3540 txpktsize = IXGBE_TXPBSIZE_MAX / num_pb;
3541 txpbthresh = (txpktsize / 1024) - IXGBE_TXPKT_SIZE_MAX;
3542 for (i = 0; i < num_pb; i++) {
3543 IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), txpktsize);
3544 IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), txpbthresh);
3547 /* Clear unused TCs, if any, to zero buffer size*/
3548 for (; i < IXGBE_MAX_PB; i++) {
3549 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), 0);
3550 IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), 0);
3551 IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), 0);
3556 * ixgbe_calculate_checksum - Calculate checksum for buffer
3557 * @buffer: pointer to EEPROM
3558 * @length: size of EEPROM to calculate a checksum for
3560 * Calculates the checksum for some buffer on a specified length. The
3561 * checksum calculated is returned.
3563 u8 ixgbe_calculate_checksum(u8 *buffer, u32 length)
3571 for (i = 0; i < length; i++)
3574 return (u8) (0 - sum);
3578 * ixgbe_hic_unlocked - Issue command to manageability block unlocked
3579 * @hw: pointer to the HW structure
3580 * @buffer: command to write and where the return status will be placed
3581 * @length: length of buffer, must be multiple of 4 bytes
3582 * @timeout: time in ms to wait for command completion
3584 * Communicates with the manageability block. On success return 0
3585 * else returns semaphore error when encountering an error acquiring
3586 * semaphore, -EINVAL when incorrect parameters passed or -EIO when
3589 * This function assumes that the IXGBE_GSSR_SW_MNG_SM semaphore is held
3592 s32 ixgbe_hic_unlocked(struct ixgbe_hw *hw, u32 *buffer, u32 length,
3598 if (!length || length > IXGBE_HI_MAX_BLOCK_BYTE_LENGTH) {
3599 hw_dbg(hw, "Buffer length failure buffersize-%d.\n", length);
3603 /* Set bit 9 of FWSTS clearing FW reset indication */
3604 fwsts = IXGBE_READ_REG(hw, IXGBE_FWSTS);
3605 IXGBE_WRITE_REG(hw, IXGBE_FWSTS, fwsts | IXGBE_FWSTS_FWRI);
3607 /* Check that the host interface is enabled. */
3608 hicr = IXGBE_READ_REG(hw, IXGBE_HICR);
3609 if (!(hicr & IXGBE_HICR_EN)) {
3610 hw_dbg(hw, "IXGBE_HOST_EN bit disabled.\n");
3614 /* Calculate length in DWORDs. We must be DWORD aligned */
3615 if (length % sizeof(u32)) {
3616 hw_dbg(hw, "Buffer length failure, not aligned to dword");
3620 dword_len = length >> 2;
3622 /* The device driver writes the relevant command block
3623 * into the ram area.
3625 for (i = 0; i < dword_len; i++)
3626 IXGBE_WRITE_REG_ARRAY(hw, IXGBE_FLEX_MNG,
3627 i, (__force u32)cpu_to_le32(buffer[i]));
3629 /* Setting this bit tells the ARC that a new command is pending. */
3630 IXGBE_WRITE_REG(hw, IXGBE_HICR, hicr | IXGBE_HICR_C);
3632 for (i = 0; i < timeout; i++) {
3633 hicr = IXGBE_READ_REG(hw, IXGBE_HICR);
3634 if (!(hicr & IXGBE_HICR_C))
3636 usleep_range(1000, 2000);
3639 /* Check command successful completion. */
3640 if ((timeout && i == timeout) ||
3641 !(IXGBE_READ_REG(hw, IXGBE_HICR) & IXGBE_HICR_SV))
3648 * ixgbe_host_interface_command - Issue command to manageability block
3649 * @hw: pointer to the HW structure
3650 * @buffer: contains the command to write and where the return status will
3652 * @length: length of buffer, must be multiple of 4 bytes
3653 * @timeout: time in ms to wait for command completion
3654 * @return_data: read and return data from the buffer (true) or not (false)
3655 * Needed because FW structures are big endian and decoding of
3656 * these fields can be 8 bit or 16 bit based on command. Decoding
3657 * is not easily understood without making a table of commands.
3658 * So we will leave this up to the caller to read back the data
3661 * Communicates with the manageability block. On success return 0
3662 * else return -EIO or -EINVAL.
3664 s32 ixgbe_host_interface_command(struct ixgbe_hw *hw, void *buffer,
3665 u32 length, u32 timeout,
3668 u32 hdr_size = sizeof(struct ixgbe_hic_hdr);
3670 struct ixgbe_hic_hdr hdr;
3673 u16 buf_len, dword_len;
3677 if (!length || length > IXGBE_HI_MAX_BLOCK_BYTE_LENGTH) {
3678 hw_dbg(hw, "Buffer length failure buffersize-%d.\n", length);
3681 /* Take management host interface semaphore */
3682 status = hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_SW_MNG_SM);
3686 status = ixgbe_hic_unlocked(hw, buffer, length, timeout);
3693 /* Calculate length in DWORDs */
3694 dword_len = hdr_size >> 2;
3696 /* first pull in the header so we know the buffer length */
3697 for (bi = 0; bi < dword_len; bi++) {
3698 bp->u32arr[bi] = IXGBE_READ_REG_ARRAY(hw, IXGBE_FLEX_MNG, bi);
3699 le32_to_cpus(&bp->u32arr[bi]);
3702 /* If there is any thing in data position pull it in */
3703 buf_len = bp->hdr.buf_len;
3707 if (length < round_up(buf_len, 4) + hdr_size) {
3708 hw_dbg(hw, "Buffer not large enough for reply message.\n");
3713 /* Calculate length in DWORDs, add 3 for odd lengths */
3714 dword_len = (buf_len + 3) >> 2;
3716 /* Pull in the rest of the buffer (bi is where we left off) */
3717 for (; bi <= dword_len; bi++) {
3718 bp->u32arr[bi] = IXGBE_READ_REG_ARRAY(hw, IXGBE_FLEX_MNG, bi);
3719 le32_to_cpus(&bp->u32arr[bi]);
3723 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_SW_MNG_SM);
3729 * ixgbe_set_fw_drv_ver_generic - Sends driver version to firmware
3730 * @hw: pointer to the HW structure
3731 * @maj: driver version major number
3732 * @min: driver version minor number
3733 * @build: driver version build number
3734 * @sub: driver version sub build number
3735 * @len: length of driver_ver string
3736 * @driver_ver: driver string
3738 * Sends driver version number to firmware through the manageability
3739 * block. On success return 0
3740 * else returns -EBUSY when encountering an error acquiring
3741 * semaphore or -EIO when command fails.
3743 s32 ixgbe_set_fw_drv_ver_generic(struct ixgbe_hw *hw, u8 maj, u8 min,
3744 u8 build, u8 sub, __always_unused u16 len,
3745 __always_unused const char *driver_ver)
3747 struct ixgbe_hic_drv_info fw_cmd;
3751 fw_cmd.hdr.cmd = FW_CEM_CMD_DRIVER_INFO;
3752 fw_cmd.hdr.buf_len = FW_CEM_CMD_DRIVER_INFO_LEN;
3753 fw_cmd.hdr.cmd_or_resp.cmd_resv = FW_CEM_CMD_RESERVED;
3754 fw_cmd.port_num = hw->bus.func;
3755 fw_cmd.ver_maj = maj;
3756 fw_cmd.ver_min = min;
3757 fw_cmd.ver_build = build;
3758 fw_cmd.ver_sub = sub;
3759 fw_cmd.hdr.checksum = 0;
3762 fw_cmd.hdr.checksum = ixgbe_calculate_checksum((u8 *)&fw_cmd,
3763 (FW_CEM_HDR_LEN + fw_cmd.hdr.buf_len));
3765 for (i = 0; i <= FW_CEM_MAX_RETRIES; i++) {
3766 ret_val = ixgbe_host_interface_command(hw, &fw_cmd,
3768 IXGBE_HI_COMMAND_TIMEOUT,
3773 if (fw_cmd.hdr.cmd_or_resp.ret_status ==
3774 FW_CEM_RESP_STATUS_SUCCESS)
3786 * ixgbe_clear_tx_pending - Clear pending TX work from the PCIe fifo
3787 * @hw: pointer to the hardware structure
3789 * The 82599 and x540 MACs can experience issues if TX work is still pending
3790 * when a reset occurs. This function prevents this by flushing the PCIe
3791 * buffers on the system.
3793 void ixgbe_clear_tx_pending(struct ixgbe_hw *hw)
3795 u32 gcr_ext, hlreg0, i, poll;
3799 * If double reset is not requested then all transactions should
3800 * already be clear and as such there is no work to do
3802 if (!(hw->mac.flags & IXGBE_FLAGS_DOUBLE_RESET_REQUIRED))
3806 * Set loopback enable to prevent any transmits from being sent
3807 * should the link come up. This assumes that the RXCTRL.RXEN bit
3808 * has already been cleared.
3810 hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0);
3811 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0 | IXGBE_HLREG0_LPBK);
3813 /* wait for a last completion before clearing buffers */
3814 IXGBE_WRITE_FLUSH(hw);
3815 usleep_range(3000, 6000);
3817 /* Before proceeding, make sure that the PCIe block does not have
3818 * transactions pending.
3820 poll = ixgbe_pcie_timeout_poll(hw);
3821 for (i = 0; i < poll; i++) {
3822 usleep_range(100, 200);
3823 value = ixgbe_read_pci_cfg_word(hw, IXGBE_PCI_DEVICE_STATUS);
3824 if (ixgbe_removed(hw->hw_addr))
3826 if (!(value & IXGBE_PCI_DEVICE_STATUS_TRANSACTION_PENDING))
3830 /* initiate cleaning flow for buffers in the PCIe transaction layer */
3831 gcr_ext = IXGBE_READ_REG(hw, IXGBE_GCR_EXT);
3832 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT,
3833 gcr_ext | IXGBE_GCR_EXT_BUFFERS_CLEAR);
3835 /* Flush all writes and allow 20usec for all transactions to clear */
3836 IXGBE_WRITE_FLUSH(hw);
3839 /* restore previous register values */
3840 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, gcr_ext);
3841 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0);
3844 static const u8 ixgbe_emc_temp_data[4] = {
3845 IXGBE_EMC_INTERNAL_DATA,
3846 IXGBE_EMC_DIODE1_DATA,
3847 IXGBE_EMC_DIODE2_DATA,
3848 IXGBE_EMC_DIODE3_DATA
3850 static const u8 ixgbe_emc_therm_limit[4] = {
3851 IXGBE_EMC_INTERNAL_THERM_LIMIT,
3852 IXGBE_EMC_DIODE1_THERM_LIMIT,
3853 IXGBE_EMC_DIODE2_THERM_LIMIT,
3854 IXGBE_EMC_DIODE3_THERM_LIMIT
3858 * ixgbe_get_ets_data - Extracts the ETS bit data
3859 * @hw: pointer to hardware structure
3860 * @ets_cfg: extected ETS data
3861 * @ets_offset: offset of ETS data
3863 * Returns error code.
3865 static s32 ixgbe_get_ets_data(struct ixgbe_hw *hw, u16 *ets_cfg,
3870 status = hw->eeprom.ops.read(hw, IXGBE_ETS_CFG, ets_offset);
3874 if ((*ets_offset == 0x0000) || (*ets_offset == 0xFFFF))
3877 status = hw->eeprom.ops.read(hw, *ets_offset, ets_cfg);
3881 if ((*ets_cfg & IXGBE_ETS_TYPE_MASK) != IXGBE_ETS_TYPE_EMC_SHIFTED)
3888 * ixgbe_get_thermal_sensor_data - Gathers thermal sensor data
3889 * @hw: pointer to hardware structure
3891 * Returns the thermal sensor data structure
3893 s32 ixgbe_get_thermal_sensor_data_generic(struct ixgbe_hw *hw)
3901 struct ixgbe_thermal_sensor_data *data = &hw->mac.thermal_sensor_data;
3903 /* Only support thermal sensors attached to physical port 0 */
3904 if ((IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1))
3907 status = ixgbe_get_ets_data(hw, &ets_cfg, &ets_offset);
3911 num_sensors = (ets_cfg & IXGBE_ETS_NUM_SENSORS_MASK);
3912 if (num_sensors > IXGBE_MAX_SENSORS)
3913 num_sensors = IXGBE_MAX_SENSORS;
3915 for (i = 0; i < num_sensors; i++) {
3919 status = hw->eeprom.ops.read(hw, (ets_offset + 1 + i),
3924 sensor_index = ((ets_sensor & IXGBE_ETS_DATA_INDEX_MASK) >>
3925 IXGBE_ETS_DATA_INDEX_SHIFT);
3926 sensor_location = ((ets_sensor & IXGBE_ETS_DATA_LOC_MASK) >>
3927 IXGBE_ETS_DATA_LOC_SHIFT);
3929 if (sensor_location != 0) {
3930 status = hw->phy.ops.read_i2c_byte(hw,
3931 ixgbe_emc_temp_data[sensor_index],
3932 IXGBE_I2C_THERMAL_SENSOR_ADDR,
3933 &data->sensor[i].temp);
3943 * ixgbe_init_thermal_sensor_thresh_generic - Inits thermal sensor thresholds
3944 * @hw: pointer to hardware structure
3946 * Inits the thermal sensor thresholds according to the NVM map
3947 * and save off the threshold and location values into mac.thermal_sensor_data
3949 s32 ixgbe_init_thermal_sensor_thresh_generic(struct ixgbe_hw *hw)
3955 u8 low_thresh_delta;
3959 struct ixgbe_thermal_sensor_data *data = &hw->mac.thermal_sensor_data;
3961 memset(data, 0, sizeof(struct ixgbe_thermal_sensor_data));
3963 /* Only support thermal sensors attached to physical port 0 */
3964 if ((IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1))
3967 status = ixgbe_get_ets_data(hw, &ets_cfg, &ets_offset);
3971 low_thresh_delta = ((ets_cfg & IXGBE_ETS_LTHRES_DELTA_MASK) >>
3972 IXGBE_ETS_LTHRES_DELTA_SHIFT);
3973 num_sensors = (ets_cfg & IXGBE_ETS_NUM_SENSORS_MASK);
3974 if (num_sensors > IXGBE_MAX_SENSORS)
3975 num_sensors = IXGBE_MAX_SENSORS;
3977 for (i = 0; i < num_sensors; i++) {
3981 if (hw->eeprom.ops.read(hw, ets_offset + 1 + i, &ets_sensor)) {
3982 hw_err(hw, "eeprom read at offset %d failed\n",
3983 ets_offset + 1 + i);
3986 sensor_index = ((ets_sensor & IXGBE_ETS_DATA_INDEX_MASK) >>
3987 IXGBE_ETS_DATA_INDEX_SHIFT);
3988 sensor_location = ((ets_sensor & IXGBE_ETS_DATA_LOC_MASK) >>
3989 IXGBE_ETS_DATA_LOC_SHIFT);
3990 therm_limit = ets_sensor & IXGBE_ETS_DATA_HTHRESH_MASK;
3992 hw->phy.ops.write_i2c_byte(hw,
3993 ixgbe_emc_therm_limit[sensor_index],
3994 IXGBE_I2C_THERMAL_SENSOR_ADDR, therm_limit);
3996 if (sensor_location == 0)
3999 data->sensor[i].location = sensor_location;
4000 data->sensor[i].caution_thresh = therm_limit;
4001 data->sensor[i].max_op_thresh = therm_limit - low_thresh_delta;
4008 * ixgbe_get_orom_version - Return option ROM from EEPROM
4010 * @hw: pointer to hardware structure
4011 * @nvm_ver: pointer to output structure
4013 * if valid option ROM version, nvm_ver->or_valid set to true
4014 * else nvm_ver->or_valid is false.
4016 void ixgbe_get_orom_version(struct ixgbe_hw *hw,
4017 struct ixgbe_nvm_version *nvm_ver)
4019 u16 offset, eeprom_cfg_blkh, eeprom_cfg_blkl;
4021 nvm_ver->or_valid = false;
4022 /* Option Rom may or may not be present. Start with pointer */
4023 hw->eeprom.ops.read(hw, NVM_OROM_OFFSET, &offset);
4025 /* make sure offset is valid */
4026 if (offset == 0x0 || offset == NVM_INVALID_PTR)
4029 hw->eeprom.ops.read(hw, offset + NVM_OROM_BLK_HI, &eeprom_cfg_blkh);
4030 hw->eeprom.ops.read(hw, offset + NVM_OROM_BLK_LOW, &eeprom_cfg_blkl);
4032 /* option rom exists and is valid */
4033 if ((eeprom_cfg_blkl | eeprom_cfg_blkh) == 0x0 ||
4034 eeprom_cfg_blkl == NVM_VER_INVALID ||
4035 eeprom_cfg_blkh == NVM_VER_INVALID)
4038 nvm_ver->or_valid = true;
4039 nvm_ver->or_major = eeprom_cfg_blkl >> NVM_OROM_SHIFT;
4040 nvm_ver->or_build = (eeprom_cfg_blkl << NVM_OROM_SHIFT) |
4041 (eeprom_cfg_blkh >> NVM_OROM_SHIFT);
4042 nvm_ver->or_patch = eeprom_cfg_blkh & NVM_OROM_PATCH_MASK;
4046 * ixgbe_get_oem_prod_version Etrack ID from EEPROM
4048 * @hw: pointer to hardware structure
4049 * @nvm_ver: pointer to output structure
4051 * if valid OEM product version, nvm_ver->oem_valid set to true
4052 * else nvm_ver->oem_valid is false.
4054 void ixgbe_get_oem_prod_version(struct ixgbe_hw *hw,
4055 struct ixgbe_nvm_version *nvm_ver)
4057 u16 rel_num, prod_ver, mod_len, cap, offset;
4059 nvm_ver->oem_valid = false;
4060 hw->eeprom.ops.read(hw, NVM_OEM_PROD_VER_PTR, &offset);
4062 /* Return is offset to OEM Product Version block is invalid */
4063 if (offset == 0x0 || offset == NVM_INVALID_PTR)
4066 /* Read product version block */
4067 hw->eeprom.ops.read(hw, offset, &mod_len);
4068 hw->eeprom.ops.read(hw, offset + NVM_OEM_PROD_VER_CAP_OFF, &cap);
4070 /* Return if OEM product version block is invalid */
4071 if (mod_len != NVM_OEM_PROD_VER_MOD_LEN ||
4072 (cap & NVM_OEM_PROD_VER_CAP_MASK) != 0x0)
4075 hw->eeprom.ops.read(hw, offset + NVM_OEM_PROD_VER_OFF_L, &prod_ver);
4076 hw->eeprom.ops.read(hw, offset + NVM_OEM_PROD_VER_OFF_H, &rel_num);
4078 /* Return if version is invalid */
4079 if ((rel_num | prod_ver) == 0x0 ||
4080 rel_num == NVM_VER_INVALID || prod_ver == NVM_VER_INVALID)
4083 nvm_ver->oem_major = prod_ver >> NVM_VER_SHIFT;
4084 nvm_ver->oem_minor = prod_ver & NVM_VER_MASK;
4085 nvm_ver->oem_release = rel_num;
4086 nvm_ver->oem_valid = true;
4090 * ixgbe_get_etk_id - Return Etrack ID from EEPROM
4092 * @hw: pointer to hardware structure
4093 * @nvm_ver: pointer to output structure
4095 * word read errors will return 0xFFFF
4097 void ixgbe_get_etk_id(struct ixgbe_hw *hw,
4098 struct ixgbe_nvm_version *nvm_ver)
4100 u16 etk_id_l, etk_id_h;
4102 if (hw->eeprom.ops.read(hw, NVM_ETK_OFF_LOW, &etk_id_l))
4103 etk_id_l = NVM_VER_INVALID;
4104 if (hw->eeprom.ops.read(hw, NVM_ETK_OFF_HI, &etk_id_h))
4105 etk_id_h = NVM_VER_INVALID;
4107 /* The word order for the version format is determined by high order
4110 if ((etk_id_h & NVM_ETK_VALID) == 0) {
4111 nvm_ver->etk_id = etk_id_h;
4112 nvm_ver->etk_id |= (etk_id_l << NVM_ETK_SHIFT);
4114 nvm_ver->etk_id = etk_id_l;
4115 nvm_ver->etk_id |= (etk_id_h << NVM_ETK_SHIFT);
4119 void ixgbe_disable_rx_generic(struct ixgbe_hw *hw)
4123 rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
4124 if (rxctrl & IXGBE_RXCTRL_RXEN) {
4125 if (hw->mac.type != ixgbe_mac_82598EB) {
4128 pfdtxgswc = IXGBE_READ_REG(hw, IXGBE_PFDTXGSWC);
4129 if (pfdtxgswc & IXGBE_PFDTXGSWC_VT_LBEN) {
4130 pfdtxgswc &= ~IXGBE_PFDTXGSWC_VT_LBEN;
4131 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, pfdtxgswc);
4132 hw->mac.set_lben = true;
4134 hw->mac.set_lben = false;
4137 rxctrl &= ~IXGBE_RXCTRL_RXEN;
4138 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, rxctrl);
4142 void ixgbe_enable_rx_generic(struct ixgbe_hw *hw)
4146 rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
4147 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, (rxctrl | IXGBE_RXCTRL_RXEN));
4149 if (hw->mac.type != ixgbe_mac_82598EB) {
4150 if (hw->mac.set_lben) {
4153 pfdtxgswc = IXGBE_READ_REG(hw, IXGBE_PFDTXGSWC);
4154 pfdtxgswc |= IXGBE_PFDTXGSWC_VT_LBEN;
4155 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, pfdtxgswc);
4156 hw->mac.set_lben = false;
4161 /** ixgbe_mng_present - returns true when management capability is present
4162 * @hw: pointer to hardware structure
4164 bool ixgbe_mng_present(struct ixgbe_hw *hw)
4168 if (hw->mac.type < ixgbe_mac_82599EB)
4171 fwsm = IXGBE_READ_REG(hw, IXGBE_FWSM(hw));
4173 return !!(fwsm & IXGBE_FWSM_FW_MODE_PT);
4177 * ixgbe_setup_mac_link_multispeed_fiber - Set MAC link speed
4178 * @hw: pointer to hardware structure
4179 * @speed: new link speed
4180 * @autoneg_wait_to_complete: true when waiting for completion is needed
4182 * Set the link speed in the MAC and/or PHY register and restarts link.
4184 s32 ixgbe_setup_mac_link_multispeed_fiber(struct ixgbe_hw *hw,
4185 ixgbe_link_speed speed,
4186 bool autoneg_wait_to_complete)
4188 ixgbe_link_speed link_speed = IXGBE_LINK_SPEED_UNKNOWN;
4189 ixgbe_link_speed highest_link_speed = IXGBE_LINK_SPEED_UNKNOWN;
4193 bool autoneg, link_up = false;
4195 /* Mask off requested but non-supported speeds */
4196 status = hw->mac.ops.get_link_capabilities(hw, &link_speed, &autoneg);
4200 speed &= link_speed;
4202 /* Try each speed one by one, highest priority first. We do this in
4203 * software because 10Gb fiber doesn't support speed autonegotiation.
4205 if (speed & IXGBE_LINK_SPEED_10GB_FULL) {
4207 highest_link_speed = IXGBE_LINK_SPEED_10GB_FULL;
4209 /* Set the module link speed */
4210 switch (hw->phy.media_type) {
4211 case ixgbe_media_type_fiber:
4212 hw->mac.ops.set_rate_select_speed(hw,
4213 IXGBE_LINK_SPEED_10GB_FULL);
4215 case ixgbe_media_type_fiber_qsfp:
4216 /* QSFP module automatically detects MAC link speed */
4219 hw_dbg(hw, "Unexpected media type\n");
4223 /* Allow module to change analog characteristics (1G->10G) */
4226 status = hw->mac.ops.setup_mac_link(hw,
4227 IXGBE_LINK_SPEED_10GB_FULL,
4228 autoneg_wait_to_complete);
4232 /* Flap the Tx laser if it has not already been done */
4233 if (hw->mac.ops.flap_tx_laser)
4234 hw->mac.ops.flap_tx_laser(hw);
4236 /* Wait for the controller to acquire link. Per IEEE 802.3ap,
4237 * Section 73.10.2, we may have to wait up to 500ms if KR is
4238 * attempted. 82599 uses the same timing for 10g SFI.
4240 for (i = 0; i < 5; i++) {
4241 /* Wait for the link partner to also set speed */
4244 /* If we have link, just jump out */
4245 status = hw->mac.ops.check_link(hw, &link_speed,
4255 if (speed & IXGBE_LINK_SPEED_1GB_FULL) {
4257 if (highest_link_speed == IXGBE_LINK_SPEED_UNKNOWN)
4258 highest_link_speed = IXGBE_LINK_SPEED_1GB_FULL;
4260 /* Set the module link speed */
4261 switch (hw->phy.media_type) {
4262 case ixgbe_media_type_fiber:
4263 hw->mac.ops.set_rate_select_speed(hw,
4264 IXGBE_LINK_SPEED_1GB_FULL);
4266 case ixgbe_media_type_fiber_qsfp:
4267 /* QSFP module automatically detects link speed */
4270 hw_dbg(hw, "Unexpected media type\n");
4274 /* Allow module to change analog characteristics (10G->1G) */
4277 status = hw->mac.ops.setup_mac_link(hw,
4278 IXGBE_LINK_SPEED_1GB_FULL,
4279 autoneg_wait_to_complete);
4283 /* Flap the Tx laser if it has not already been done */
4284 if (hw->mac.ops.flap_tx_laser)
4285 hw->mac.ops.flap_tx_laser(hw);
4287 /* Wait for the link partner to also set speed */
4290 /* If we have link, just jump out */
4291 status = hw->mac.ops.check_link(hw, &link_speed, &link_up,
4300 /* We didn't get link. Configure back to the highest speed we tried,
4301 * (if there was more than one). We call ourselves back with just the
4302 * single highest speed that the user requested.
4305 status = ixgbe_setup_mac_link_multispeed_fiber(hw,
4307 autoneg_wait_to_complete);
4310 /* Set autoneg_advertised value based on input link speed */
4311 hw->phy.autoneg_advertised = 0;
4313 if (speed & IXGBE_LINK_SPEED_10GB_FULL)
4314 hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_10GB_FULL;
4316 if (speed & IXGBE_LINK_SPEED_1GB_FULL)
4317 hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_1GB_FULL;
4323 * ixgbe_set_soft_rate_select_speed - Set module link speed
4324 * @hw: pointer to hardware structure
4325 * @speed: link speed to set
4327 * Set module link speed via the soft rate select.
4329 void ixgbe_set_soft_rate_select_speed(struct ixgbe_hw *hw,
4330 ixgbe_link_speed speed)
4336 case IXGBE_LINK_SPEED_10GB_FULL:
4337 /* one bit mask same as setting on */
4338 rs = IXGBE_SFF_SOFT_RS_SELECT_10G;
4340 case IXGBE_LINK_SPEED_1GB_FULL:
4341 rs = IXGBE_SFF_SOFT_RS_SELECT_1G;
4344 hw_dbg(hw, "Invalid fixed module speed\n");
4349 status = hw->phy.ops.read_i2c_byte(hw, IXGBE_SFF_SFF_8472_OSCB,
4350 IXGBE_I2C_EEPROM_DEV_ADDR2,
4353 hw_dbg(hw, "Failed to read Rx Rate Select RS0\n");
4357 eeprom_data = (eeprom_data & ~IXGBE_SFF_SOFT_RS_SELECT_MASK) | rs;
4359 status = hw->phy.ops.write_i2c_byte(hw, IXGBE_SFF_SFF_8472_OSCB,
4360 IXGBE_I2C_EEPROM_DEV_ADDR2,
4363 hw_dbg(hw, "Failed to write Rx Rate Select RS0\n");
4368 status = hw->phy.ops.read_i2c_byte(hw, IXGBE_SFF_SFF_8472_ESCB,
4369 IXGBE_I2C_EEPROM_DEV_ADDR2,
4372 hw_dbg(hw, "Failed to read Rx Rate Select RS1\n");
4376 eeprom_data = (eeprom_data & ~IXGBE_SFF_SOFT_RS_SELECT_MASK) | rs;
4378 status = hw->phy.ops.write_i2c_byte(hw, IXGBE_SFF_SFF_8472_ESCB,
4379 IXGBE_I2C_EEPROM_DEV_ADDR2,
4382 hw_dbg(hw, "Failed to write Rx Rate Select RS1\n");