1 /*******************************************************************************
3 Intel 10 Gigabit PCI Express Linux driver
4 Copyright(c) 1999 - 2014 Intel Corporation.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
23 Linux NICS <linux.nics@intel.com>
24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *******************************************************************************/
29 #include <linux/pci.h>
30 #include <linux/delay.h>
31 #include <linux/sched.h>
32 #include <linux/netdevice.h>
35 #include "ixgbe_common.h"
36 #include "ixgbe_phy.h"
38 static s32 ixgbe_acquire_eeprom(struct ixgbe_hw *hw);
39 static s32 ixgbe_get_eeprom_semaphore(struct ixgbe_hw *hw);
40 static void ixgbe_release_eeprom_semaphore(struct ixgbe_hw *hw);
41 static s32 ixgbe_ready_eeprom(struct ixgbe_hw *hw);
42 static void ixgbe_standby_eeprom(struct ixgbe_hw *hw);
43 static void ixgbe_shift_out_eeprom_bits(struct ixgbe_hw *hw, u16 data,
45 static u16 ixgbe_shift_in_eeprom_bits(struct ixgbe_hw *hw, u16 count);
46 static void ixgbe_raise_eeprom_clk(struct ixgbe_hw *hw, u32 *eec);
47 static void ixgbe_lower_eeprom_clk(struct ixgbe_hw *hw, u32 *eec);
48 static void ixgbe_release_eeprom(struct ixgbe_hw *hw);
50 static s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr);
51 static s32 ixgbe_poll_eerd_eewr_done(struct ixgbe_hw *hw, u32 ee_reg);
52 static s32 ixgbe_read_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset,
53 u16 words, u16 *data);
54 static s32 ixgbe_write_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset,
55 u16 words, u16 *data);
56 static s32 ixgbe_detect_eeprom_page_size_generic(struct ixgbe_hw *hw,
58 static s32 ixgbe_disable_pcie_master(struct ixgbe_hw *hw);
61 * ixgbe_device_supports_autoneg_fc - Check if phy supports autoneg flow
63 * @hw: pointer to hardware structure
65 * There are several phys that do not support autoneg flow control. This
66 * function check the device id to see if the associated phy supports
67 * autoneg flow control.
69 bool ixgbe_device_supports_autoneg_fc(struct ixgbe_hw *hw)
71 bool supported = false;
72 ixgbe_link_speed speed;
75 switch (hw->phy.media_type) {
76 case ixgbe_media_type_fiber_fixed:
77 case ixgbe_media_type_fiber:
78 hw->mac.ops.check_link(hw, &speed, &link_up, false);
79 /* if link is down, assume supported */
81 supported = speed == IXGBE_LINK_SPEED_1GB_FULL ?
86 case ixgbe_media_type_backplane:
89 case ixgbe_media_type_copper:
90 /* only some copper devices support flow control autoneg */
91 switch (hw->device_id) {
92 case IXGBE_DEV_ID_82599_T3_LOM:
93 case IXGBE_DEV_ID_X540T:
94 case IXGBE_DEV_ID_X540T1:
108 * ixgbe_setup_fc - Set up flow control
109 * @hw: pointer to hardware structure
111 * Called at init time to set up flow control.
113 static s32 ixgbe_setup_fc(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");
126 ret_val = IXGBE_ERR_INVALID_LINK_SETTINGS;
131 * 10gig parts do not have a word in the EEPROM to determine the
132 * default flow control setting, so we explicitly set it to full.
134 if (hw->fc.requested_mode == ixgbe_fc_default)
135 hw->fc.requested_mode = ixgbe_fc_full;
138 * Set up the 1G and 10G flow control advertisement registers so the
139 * HW will be able to do fc autoneg once the cable is plugged in. If
140 * we link at 10G, the 1G advertisement is harmless and vice versa.
142 switch (hw->phy.media_type) {
143 case ixgbe_media_type_backplane:
144 /* some MAC's need RMW protection on AUTOC */
145 ret_val = hw->mac.ops.prot_autoc_read(hw, &locked, ®_bp);
149 /* only backplane uses autoc so fall though */
150 case ixgbe_media_type_fiber_fixed:
151 case ixgbe_media_type_fiber:
152 reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANA);
155 case ixgbe_media_type_copper:
156 hw->phy.ops.read_reg(hw, MDIO_AN_ADVERTISE,
157 MDIO_MMD_AN, ®_cu);
164 * The possible values of fc.requested_mode are:
165 * 0: Flow control is completely disabled
166 * 1: Rx flow control is enabled (we can receive pause frames,
167 * but not send pause frames).
168 * 2: Tx flow control is enabled (we can send pause frames but
169 * we do not support receiving pause frames).
170 * 3: Both Rx and Tx flow control (symmetric) are enabled.
173 switch (hw->fc.requested_mode) {
175 /* Flow control completely disabled by software override. */
176 reg &= ~(IXGBE_PCS1GANA_SYM_PAUSE | IXGBE_PCS1GANA_ASM_PAUSE);
177 if (hw->phy.media_type == ixgbe_media_type_backplane)
178 reg_bp &= ~(IXGBE_AUTOC_SYM_PAUSE |
179 IXGBE_AUTOC_ASM_PAUSE);
180 else if (hw->phy.media_type == ixgbe_media_type_copper)
181 reg_cu &= ~(IXGBE_TAF_SYM_PAUSE | IXGBE_TAF_ASM_PAUSE);
183 case ixgbe_fc_tx_pause:
185 * Tx Flow control is enabled, and Rx Flow control is
186 * disabled by software override.
188 reg |= IXGBE_PCS1GANA_ASM_PAUSE;
189 reg &= ~IXGBE_PCS1GANA_SYM_PAUSE;
190 if (hw->phy.media_type == ixgbe_media_type_backplane) {
191 reg_bp |= IXGBE_AUTOC_ASM_PAUSE;
192 reg_bp &= ~IXGBE_AUTOC_SYM_PAUSE;
193 } else if (hw->phy.media_type == ixgbe_media_type_copper) {
194 reg_cu |= IXGBE_TAF_ASM_PAUSE;
195 reg_cu &= ~IXGBE_TAF_SYM_PAUSE;
198 case ixgbe_fc_rx_pause:
200 * Rx Flow control is enabled and Tx Flow control is
201 * disabled by software override. Since there really
202 * isn't a way to advertise that we are capable of RX
203 * Pause ONLY, we will advertise that we support both
204 * symmetric and asymmetric Rx PAUSE, as such we fall
205 * through to the fc_full statement. Later, we will
206 * disable the adapter's ability to send PAUSE frames.
209 /* Flow control (both Rx and Tx) is enabled by SW override. */
210 reg |= IXGBE_PCS1GANA_SYM_PAUSE | IXGBE_PCS1GANA_ASM_PAUSE;
211 if (hw->phy.media_type == ixgbe_media_type_backplane)
212 reg_bp |= IXGBE_AUTOC_SYM_PAUSE |
213 IXGBE_AUTOC_ASM_PAUSE;
214 else if (hw->phy.media_type == ixgbe_media_type_copper)
215 reg_cu |= IXGBE_TAF_SYM_PAUSE | IXGBE_TAF_ASM_PAUSE;
218 hw_dbg(hw, "Flow control param set incorrectly\n");
219 ret_val = IXGBE_ERR_CONFIG;
224 if (hw->mac.type != ixgbe_mac_X540) {
226 * Enable auto-negotiation between the MAC & PHY;
227 * the MAC will advertise clause 37 flow control.
229 IXGBE_WRITE_REG(hw, IXGBE_PCS1GANA, reg);
230 reg = IXGBE_READ_REG(hw, IXGBE_PCS1GLCTL);
232 /* Disable AN timeout */
233 if (hw->fc.strict_ieee)
234 reg &= ~IXGBE_PCS1GLCTL_AN_1G_TIMEOUT_EN;
236 IXGBE_WRITE_REG(hw, IXGBE_PCS1GLCTL, reg);
237 hw_dbg(hw, "Set up FC; PCS1GLCTL = 0x%08X\n", reg);
241 * AUTOC restart handles negotiation of 1G and 10G on backplane
242 * and copper. There is no need to set the PCS1GCTL register.
245 if (hw->phy.media_type == ixgbe_media_type_backplane) {
246 /* Need the SW/FW semaphore around AUTOC writes if 82599 and
247 * LESM is on, likewise reset_pipeline requries the lock as
248 * it also writes AUTOC.
250 ret_val = hw->mac.ops.prot_autoc_write(hw, reg_bp, locked);
254 } else if ((hw->phy.media_type == ixgbe_media_type_copper) &&
255 ixgbe_device_supports_autoneg_fc(hw)) {
256 hw->phy.ops.write_reg(hw, MDIO_AN_ADVERTISE,
257 MDIO_MMD_AN, reg_cu);
260 hw_dbg(hw, "Set up FC; IXGBE_AUTOC = 0x%08X\n", reg);
266 * ixgbe_start_hw_generic - Prepare hardware for Tx/Rx
267 * @hw: pointer to hardware structure
269 * Starts the hardware by filling the bus info structure and media type, clears
270 * all on chip counters, initializes receive address registers, multicast
271 * table, VLAN filter table, calls routine to set up link and flow control
272 * settings, and leaves transmit and receive units disabled and uninitialized
274 s32 ixgbe_start_hw_generic(struct ixgbe_hw *hw)
278 /* Set the media type */
279 hw->phy.media_type = hw->mac.ops.get_media_type(hw);
281 /* Identify the PHY */
282 hw->phy.ops.identify(hw);
284 /* Clear the VLAN filter table */
285 hw->mac.ops.clear_vfta(hw);
287 /* Clear statistics registers */
288 hw->mac.ops.clear_hw_cntrs(hw);
290 /* Set No Snoop Disable */
291 ctrl_ext = IXGBE_READ_REG(hw, IXGBE_CTRL_EXT);
292 ctrl_ext |= IXGBE_CTRL_EXT_NS_DIS;
293 IXGBE_WRITE_REG(hw, IXGBE_CTRL_EXT, ctrl_ext);
294 IXGBE_WRITE_FLUSH(hw);
296 /* Setup flow control */
299 /* Clear adapter stopped flag */
300 hw->adapter_stopped = false;
306 * ixgbe_start_hw_gen2 - Init sequence for common device family
307 * @hw: pointer to hw structure
309 * Performs the init sequence common to the second generation
311 * Devices in the second generation:
315 s32 ixgbe_start_hw_gen2(struct ixgbe_hw *hw)
320 /* Clear the rate limiters */
321 for (i = 0; i < hw->mac.max_tx_queues; i++) {
322 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, i);
323 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, 0);
325 IXGBE_WRITE_FLUSH(hw);
327 /* Disable relaxed ordering */
328 for (i = 0; i < hw->mac.max_tx_queues; i++) {
329 regval = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL_82599(i));
330 regval &= ~IXGBE_DCA_TXCTRL_DESC_WRO_EN;
331 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL_82599(i), regval);
334 for (i = 0; i < hw->mac.max_rx_queues; i++) {
335 regval = IXGBE_READ_REG(hw, IXGBE_DCA_RXCTRL(i));
336 regval &= ~(IXGBE_DCA_RXCTRL_DATA_WRO_EN |
337 IXGBE_DCA_RXCTRL_HEAD_WRO_EN);
338 IXGBE_WRITE_REG(hw, IXGBE_DCA_RXCTRL(i), regval);
345 * ixgbe_init_hw_generic - Generic hardware initialization
346 * @hw: pointer to hardware structure
348 * Initialize the hardware by resetting the hardware, filling the bus info
349 * structure and media type, clears all on chip counters, initializes receive
350 * address registers, multicast table, VLAN filter table, calls routine to set
351 * up link and flow control settings, and leaves transmit and receive units
352 * disabled and uninitialized
354 s32 ixgbe_init_hw_generic(struct ixgbe_hw *hw)
358 /* Reset the hardware */
359 status = hw->mac.ops.reset_hw(hw);
363 status = hw->mac.ops.start_hw(hw);
370 * ixgbe_clear_hw_cntrs_generic - Generic clear hardware counters
371 * @hw: pointer to hardware structure
373 * Clears all hardware statistics counters by reading them from the hardware
374 * Statistics counters are clear on read.
376 s32 ixgbe_clear_hw_cntrs_generic(struct ixgbe_hw *hw)
380 IXGBE_READ_REG(hw, IXGBE_CRCERRS);
381 IXGBE_READ_REG(hw, IXGBE_ILLERRC);
382 IXGBE_READ_REG(hw, IXGBE_ERRBC);
383 IXGBE_READ_REG(hw, IXGBE_MSPDC);
384 for (i = 0; i < 8; i++)
385 IXGBE_READ_REG(hw, IXGBE_MPC(i));
387 IXGBE_READ_REG(hw, IXGBE_MLFC);
388 IXGBE_READ_REG(hw, IXGBE_MRFC);
389 IXGBE_READ_REG(hw, IXGBE_RLEC);
390 IXGBE_READ_REG(hw, IXGBE_LXONTXC);
391 IXGBE_READ_REG(hw, IXGBE_LXOFFTXC);
392 if (hw->mac.type >= ixgbe_mac_82599EB) {
393 IXGBE_READ_REG(hw, IXGBE_LXONRXCNT);
394 IXGBE_READ_REG(hw, IXGBE_LXOFFRXCNT);
396 IXGBE_READ_REG(hw, IXGBE_LXONRXC);
397 IXGBE_READ_REG(hw, IXGBE_LXOFFRXC);
400 for (i = 0; i < 8; i++) {
401 IXGBE_READ_REG(hw, IXGBE_PXONTXC(i));
402 IXGBE_READ_REG(hw, IXGBE_PXOFFTXC(i));
403 if (hw->mac.type >= ixgbe_mac_82599EB) {
404 IXGBE_READ_REG(hw, IXGBE_PXONRXCNT(i));
405 IXGBE_READ_REG(hw, IXGBE_PXOFFRXCNT(i));
407 IXGBE_READ_REG(hw, IXGBE_PXONRXC(i));
408 IXGBE_READ_REG(hw, IXGBE_PXOFFRXC(i));
411 if (hw->mac.type >= ixgbe_mac_82599EB)
412 for (i = 0; i < 8; i++)
413 IXGBE_READ_REG(hw, IXGBE_PXON2OFFCNT(i));
414 IXGBE_READ_REG(hw, IXGBE_PRC64);
415 IXGBE_READ_REG(hw, IXGBE_PRC127);
416 IXGBE_READ_REG(hw, IXGBE_PRC255);
417 IXGBE_READ_REG(hw, IXGBE_PRC511);
418 IXGBE_READ_REG(hw, IXGBE_PRC1023);
419 IXGBE_READ_REG(hw, IXGBE_PRC1522);
420 IXGBE_READ_REG(hw, IXGBE_GPRC);
421 IXGBE_READ_REG(hw, IXGBE_BPRC);
422 IXGBE_READ_REG(hw, IXGBE_MPRC);
423 IXGBE_READ_REG(hw, IXGBE_GPTC);
424 IXGBE_READ_REG(hw, IXGBE_GORCL);
425 IXGBE_READ_REG(hw, IXGBE_GORCH);
426 IXGBE_READ_REG(hw, IXGBE_GOTCL);
427 IXGBE_READ_REG(hw, IXGBE_GOTCH);
428 if (hw->mac.type == ixgbe_mac_82598EB)
429 for (i = 0; i < 8; i++)
430 IXGBE_READ_REG(hw, IXGBE_RNBC(i));
431 IXGBE_READ_REG(hw, IXGBE_RUC);
432 IXGBE_READ_REG(hw, IXGBE_RFC);
433 IXGBE_READ_REG(hw, IXGBE_ROC);
434 IXGBE_READ_REG(hw, IXGBE_RJC);
435 IXGBE_READ_REG(hw, IXGBE_MNGPRC);
436 IXGBE_READ_REG(hw, IXGBE_MNGPDC);
437 IXGBE_READ_REG(hw, IXGBE_MNGPTC);
438 IXGBE_READ_REG(hw, IXGBE_TORL);
439 IXGBE_READ_REG(hw, IXGBE_TORH);
440 IXGBE_READ_REG(hw, IXGBE_TPR);
441 IXGBE_READ_REG(hw, IXGBE_TPT);
442 IXGBE_READ_REG(hw, IXGBE_PTC64);
443 IXGBE_READ_REG(hw, IXGBE_PTC127);
444 IXGBE_READ_REG(hw, IXGBE_PTC255);
445 IXGBE_READ_REG(hw, IXGBE_PTC511);
446 IXGBE_READ_REG(hw, IXGBE_PTC1023);
447 IXGBE_READ_REG(hw, IXGBE_PTC1522);
448 IXGBE_READ_REG(hw, IXGBE_MPTC);
449 IXGBE_READ_REG(hw, IXGBE_BPTC);
450 for (i = 0; i < 16; i++) {
451 IXGBE_READ_REG(hw, IXGBE_QPRC(i));
452 IXGBE_READ_REG(hw, IXGBE_QPTC(i));
453 if (hw->mac.type >= ixgbe_mac_82599EB) {
454 IXGBE_READ_REG(hw, IXGBE_QBRC_L(i));
455 IXGBE_READ_REG(hw, IXGBE_QBRC_H(i));
456 IXGBE_READ_REG(hw, IXGBE_QBTC_L(i));
457 IXGBE_READ_REG(hw, IXGBE_QBTC_H(i));
458 IXGBE_READ_REG(hw, IXGBE_QPRDC(i));
460 IXGBE_READ_REG(hw, IXGBE_QBRC(i));
461 IXGBE_READ_REG(hw, IXGBE_QBTC(i));
465 if (hw->mac.type == ixgbe_mac_X540) {
467 hw->phy.ops.identify(hw);
468 hw->phy.ops.read_reg(hw, IXGBE_PCRC8ECL, MDIO_MMD_PCS, &i);
469 hw->phy.ops.read_reg(hw, IXGBE_PCRC8ECH, MDIO_MMD_PCS, &i);
470 hw->phy.ops.read_reg(hw, IXGBE_LDPCECL, MDIO_MMD_PCS, &i);
471 hw->phy.ops.read_reg(hw, IXGBE_LDPCECH, MDIO_MMD_PCS, &i);
478 * ixgbe_read_pba_string_generic - Reads part number string from EEPROM
479 * @hw: pointer to hardware structure
480 * @pba_num: stores the part number string from the EEPROM
481 * @pba_num_size: part number string buffer length
483 * Reads the part number string from the EEPROM.
485 s32 ixgbe_read_pba_string_generic(struct ixgbe_hw *hw, u8 *pba_num,
494 if (pba_num == NULL) {
495 hw_dbg(hw, "PBA string buffer was null\n");
496 return IXGBE_ERR_INVALID_ARGUMENT;
499 ret_val = hw->eeprom.ops.read(hw, IXGBE_PBANUM0_PTR, &data);
501 hw_dbg(hw, "NVM Read Error\n");
505 ret_val = hw->eeprom.ops.read(hw, IXGBE_PBANUM1_PTR, &pba_ptr);
507 hw_dbg(hw, "NVM Read Error\n");
512 * if data is not ptr guard the PBA must be in legacy format which
513 * means pba_ptr is actually our second data word for the PBA number
514 * and we can decode it into an ascii string
516 if (data != IXGBE_PBANUM_PTR_GUARD) {
517 hw_dbg(hw, "NVM PBA number is not stored as string\n");
519 /* we will need 11 characters to store the PBA */
520 if (pba_num_size < 11) {
521 hw_dbg(hw, "PBA string buffer too small\n");
522 return IXGBE_ERR_NO_SPACE;
525 /* extract hex string from data and pba_ptr */
526 pba_num[0] = (data >> 12) & 0xF;
527 pba_num[1] = (data >> 8) & 0xF;
528 pba_num[2] = (data >> 4) & 0xF;
529 pba_num[3] = data & 0xF;
530 pba_num[4] = (pba_ptr >> 12) & 0xF;
531 pba_num[5] = (pba_ptr >> 8) & 0xF;
534 pba_num[8] = (pba_ptr >> 4) & 0xF;
535 pba_num[9] = pba_ptr & 0xF;
537 /* put a null character on the end of our string */
540 /* switch all the data but the '-' to hex char */
541 for (offset = 0; offset < 10; offset++) {
542 if (pba_num[offset] < 0xA)
543 pba_num[offset] += '0';
544 else if (pba_num[offset] < 0x10)
545 pba_num[offset] += 'A' - 0xA;
551 ret_val = hw->eeprom.ops.read(hw, pba_ptr, &length);
553 hw_dbg(hw, "NVM Read Error\n");
557 if (length == 0xFFFF || length == 0) {
558 hw_dbg(hw, "NVM PBA number section invalid length\n");
559 return IXGBE_ERR_PBA_SECTION;
562 /* check if pba_num buffer is big enough */
563 if (pba_num_size < (((u32)length * 2) - 1)) {
564 hw_dbg(hw, "PBA string buffer too small\n");
565 return IXGBE_ERR_NO_SPACE;
568 /* trim pba length from start of string */
572 for (offset = 0; offset < length; offset++) {
573 ret_val = hw->eeprom.ops.read(hw, pba_ptr + offset, &data);
575 hw_dbg(hw, "NVM Read Error\n");
578 pba_num[offset * 2] = (u8)(data >> 8);
579 pba_num[(offset * 2) + 1] = (u8)(data & 0xFF);
581 pba_num[offset * 2] = '\0';
587 * ixgbe_get_mac_addr_generic - Generic get MAC address
588 * @hw: pointer to hardware structure
589 * @mac_addr: Adapter MAC address
591 * Reads the adapter's MAC address from first Receive Address Register (RAR0)
592 * A reset of the adapter must be performed prior to calling this function
593 * in order for the MAC address to have been loaded from the EEPROM into RAR0
595 s32 ixgbe_get_mac_addr_generic(struct ixgbe_hw *hw, u8 *mac_addr)
601 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(0));
602 rar_low = IXGBE_READ_REG(hw, IXGBE_RAL(0));
604 for (i = 0; i < 4; i++)
605 mac_addr[i] = (u8)(rar_low >> (i*8));
607 for (i = 0; i < 2; i++)
608 mac_addr[i+4] = (u8)(rar_high >> (i*8));
613 enum ixgbe_bus_width ixgbe_convert_bus_width(u16 link_status)
615 switch (link_status & IXGBE_PCI_LINK_WIDTH) {
616 case IXGBE_PCI_LINK_WIDTH_1:
617 return ixgbe_bus_width_pcie_x1;
618 case IXGBE_PCI_LINK_WIDTH_2:
619 return ixgbe_bus_width_pcie_x2;
620 case IXGBE_PCI_LINK_WIDTH_4:
621 return ixgbe_bus_width_pcie_x4;
622 case IXGBE_PCI_LINK_WIDTH_8:
623 return ixgbe_bus_width_pcie_x8;
625 return ixgbe_bus_width_unknown;
629 enum ixgbe_bus_speed ixgbe_convert_bus_speed(u16 link_status)
631 switch (link_status & IXGBE_PCI_LINK_SPEED) {
632 case IXGBE_PCI_LINK_SPEED_2500:
633 return ixgbe_bus_speed_2500;
634 case IXGBE_PCI_LINK_SPEED_5000:
635 return ixgbe_bus_speed_5000;
636 case IXGBE_PCI_LINK_SPEED_8000:
637 return ixgbe_bus_speed_8000;
639 return ixgbe_bus_speed_unknown;
644 * ixgbe_get_bus_info_generic - Generic set PCI bus info
645 * @hw: pointer to hardware structure
647 * Sets the PCI bus info (speed, width, type) within the ixgbe_hw structure
649 s32 ixgbe_get_bus_info_generic(struct ixgbe_hw *hw)
651 struct ixgbe_adapter *adapter = hw->back;
652 struct ixgbe_mac_info *mac = &hw->mac;
655 hw->bus.type = ixgbe_bus_type_pci_express;
657 /* Get the negotiated link width and speed from PCI config space */
658 pci_read_config_word(adapter->pdev, IXGBE_PCI_LINK_STATUS,
661 hw->bus.width = ixgbe_convert_bus_width(link_status);
662 hw->bus.speed = ixgbe_convert_bus_speed(link_status);
664 mac->ops.set_lan_id(hw);
670 * ixgbe_set_lan_id_multi_port_pcie - Set LAN id for PCIe multiple port devices
671 * @hw: pointer to the HW structure
673 * Determines the LAN function id by reading memory-mapped registers
674 * and swaps the port value if requested.
676 void ixgbe_set_lan_id_multi_port_pcie(struct ixgbe_hw *hw)
678 struct ixgbe_bus_info *bus = &hw->bus;
681 reg = IXGBE_READ_REG(hw, IXGBE_STATUS);
682 bus->func = (reg & IXGBE_STATUS_LAN_ID) >> IXGBE_STATUS_LAN_ID_SHIFT;
683 bus->lan_id = bus->func;
685 /* check for a port swap */
686 reg = IXGBE_READ_REG(hw, IXGBE_FACTPS);
687 if (reg & IXGBE_FACTPS_LFS)
692 * ixgbe_stop_adapter_generic - Generic stop Tx/Rx units
693 * @hw: pointer to hardware structure
695 * Sets the adapter_stopped flag within ixgbe_hw struct. Clears interrupts,
696 * disables transmit and receive units. The adapter_stopped flag is used by
697 * the shared code and drivers to determine if the adapter is in a stopped
698 * state and should not touch the hardware.
700 s32 ixgbe_stop_adapter_generic(struct ixgbe_hw *hw)
706 * Set the adapter_stopped flag so other driver functions stop touching
709 hw->adapter_stopped = true;
711 /* Disable the receive unit */
712 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, 0);
714 /* Clear interrupt mask to stop interrupts from being generated */
715 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK);
717 /* Clear any pending interrupts, flush previous writes */
718 IXGBE_READ_REG(hw, IXGBE_EICR);
720 /* Disable the transmit unit. Each queue must be disabled. */
721 for (i = 0; i < hw->mac.max_tx_queues; i++)
722 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(i), IXGBE_TXDCTL_SWFLSH);
724 /* Disable the receive unit by stopping each queue */
725 for (i = 0; i < hw->mac.max_rx_queues; i++) {
726 reg_val = IXGBE_READ_REG(hw, IXGBE_RXDCTL(i));
727 reg_val &= ~IXGBE_RXDCTL_ENABLE;
728 reg_val |= IXGBE_RXDCTL_SWFLSH;
729 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(i), reg_val);
732 /* flush all queues disables */
733 IXGBE_WRITE_FLUSH(hw);
734 usleep_range(1000, 2000);
737 * Prevent the PCI-E bus from from hanging by disabling PCI-E master
738 * access and verify no pending requests
740 return ixgbe_disable_pcie_master(hw);
744 * ixgbe_led_on_generic - Turns on the software controllable LEDs.
745 * @hw: pointer to hardware structure
746 * @index: led number to turn on
748 s32 ixgbe_led_on_generic(struct ixgbe_hw *hw, u32 index)
750 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
752 /* To turn on the LED, set mode to ON. */
753 led_reg &= ~IXGBE_LED_MODE_MASK(index);
754 led_reg |= IXGBE_LED_ON << IXGBE_LED_MODE_SHIFT(index);
755 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
756 IXGBE_WRITE_FLUSH(hw);
762 * ixgbe_led_off_generic - Turns off the software controllable LEDs.
763 * @hw: pointer to hardware structure
764 * @index: led number to turn off
766 s32 ixgbe_led_off_generic(struct ixgbe_hw *hw, u32 index)
768 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
770 /* To turn off the LED, set mode to OFF. */
771 led_reg &= ~IXGBE_LED_MODE_MASK(index);
772 led_reg |= IXGBE_LED_OFF << IXGBE_LED_MODE_SHIFT(index);
773 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
774 IXGBE_WRITE_FLUSH(hw);
780 * ixgbe_init_eeprom_params_generic - Initialize EEPROM params
781 * @hw: pointer to hardware structure
783 * Initializes the EEPROM parameters ixgbe_eeprom_info within the
784 * ixgbe_hw struct in order to set up EEPROM access.
786 s32 ixgbe_init_eeprom_params_generic(struct ixgbe_hw *hw)
788 struct ixgbe_eeprom_info *eeprom = &hw->eeprom;
792 if (eeprom->type == ixgbe_eeprom_uninitialized) {
793 eeprom->type = ixgbe_eeprom_none;
794 /* Set default semaphore delay to 10ms which is a well
796 eeprom->semaphore_delay = 10;
797 /* Clear EEPROM page size, it will be initialized as needed */
798 eeprom->word_page_size = 0;
801 * Check for EEPROM present first.
802 * If not present leave as none
804 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
805 if (eec & IXGBE_EEC_PRES) {
806 eeprom->type = ixgbe_eeprom_spi;
809 * SPI EEPROM is assumed here. This code would need to
810 * change if a future EEPROM is not SPI.
812 eeprom_size = (u16)((eec & IXGBE_EEC_SIZE) >>
813 IXGBE_EEC_SIZE_SHIFT);
814 eeprom->word_size = 1 << (eeprom_size +
815 IXGBE_EEPROM_WORD_SIZE_SHIFT);
818 if (eec & IXGBE_EEC_ADDR_SIZE)
819 eeprom->address_bits = 16;
821 eeprom->address_bits = 8;
822 hw_dbg(hw, "Eeprom params: type = %d, size = %d, address bits: "
823 "%d\n", eeprom->type, eeprom->word_size,
824 eeprom->address_bits);
831 * ixgbe_write_eeprom_buffer_bit_bang_generic - Write EEPROM using bit-bang
832 * @hw: pointer to hardware structure
833 * @offset: offset within the EEPROM to write
834 * @words: number of words
835 * @data: 16 bit word(s) to write to EEPROM
837 * Reads 16 bit word(s) from EEPROM through bit-bang method
839 s32 ixgbe_write_eeprom_buffer_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
840 u16 words, u16 *data)
845 hw->eeprom.ops.init_params(hw);
848 status = IXGBE_ERR_INVALID_ARGUMENT;
852 if (offset + words > hw->eeprom.word_size) {
853 status = IXGBE_ERR_EEPROM;
858 * The EEPROM page size cannot be queried from the chip. We do lazy
859 * initialization. It is worth to do that when we write large buffer.
861 if ((hw->eeprom.word_page_size == 0) &&
862 (words > IXGBE_EEPROM_PAGE_SIZE_MAX))
863 ixgbe_detect_eeprom_page_size_generic(hw, offset);
866 * We cannot hold synchronization semaphores for too long
867 * to avoid other entity starvation. However it is more efficient
868 * to read in bursts than synchronizing access for each word.
870 for (i = 0; i < words; i += IXGBE_EEPROM_RD_BUFFER_MAX_COUNT) {
871 count = (words - i) / IXGBE_EEPROM_RD_BUFFER_MAX_COUNT > 0 ?
872 IXGBE_EEPROM_RD_BUFFER_MAX_COUNT : (words - i);
873 status = ixgbe_write_eeprom_buffer_bit_bang(hw, offset + i,
885 * ixgbe_write_eeprom_buffer_bit_bang - Writes 16 bit word(s) to EEPROM
886 * @hw: pointer to hardware structure
887 * @offset: offset within the EEPROM to be written to
888 * @words: number of word(s)
889 * @data: 16 bit word(s) to be written to the EEPROM
891 * If ixgbe_eeprom_update_checksum is not called after this function, the
892 * EEPROM will most likely contain an invalid checksum.
894 static s32 ixgbe_write_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset,
895 u16 words, u16 *data)
901 u8 write_opcode = IXGBE_EEPROM_WRITE_OPCODE_SPI;
903 /* Prepare the EEPROM for writing */
904 status = ixgbe_acquire_eeprom(hw);
907 if (ixgbe_ready_eeprom(hw) != 0) {
908 ixgbe_release_eeprom(hw);
909 status = IXGBE_ERR_EEPROM;
914 for (i = 0; i < words; i++) {
915 ixgbe_standby_eeprom(hw);
917 /* Send the WRITE ENABLE command (8 bit opcode ) */
918 ixgbe_shift_out_eeprom_bits(hw,
919 IXGBE_EEPROM_WREN_OPCODE_SPI,
920 IXGBE_EEPROM_OPCODE_BITS);
922 ixgbe_standby_eeprom(hw);
925 * Some SPI eeproms use the 8th address bit embedded
928 if ((hw->eeprom.address_bits == 8) &&
929 ((offset + i) >= 128))
930 write_opcode |= IXGBE_EEPROM_A8_OPCODE_SPI;
932 /* Send the Write command (8-bit opcode + addr) */
933 ixgbe_shift_out_eeprom_bits(hw, write_opcode,
934 IXGBE_EEPROM_OPCODE_BITS);
935 ixgbe_shift_out_eeprom_bits(hw, (u16)((offset + i) * 2),
936 hw->eeprom.address_bits);
938 page_size = hw->eeprom.word_page_size;
940 /* Send the data in burst via SPI*/
943 word = (word >> 8) | (word << 8);
944 ixgbe_shift_out_eeprom_bits(hw, word, 16);
949 /* do not wrap around page */
950 if (((offset + i) & (page_size - 1)) ==
953 } while (++i < words);
955 ixgbe_standby_eeprom(hw);
956 usleep_range(10000, 20000);
958 /* Done with writing - release the EEPROM */
959 ixgbe_release_eeprom(hw);
966 * ixgbe_write_eeprom_generic - Writes 16 bit value to EEPROM
967 * @hw: pointer to hardware structure
968 * @offset: offset within the EEPROM to be written to
969 * @data: 16 bit word to be written to the EEPROM
971 * If ixgbe_eeprom_update_checksum is not called after this function, the
972 * EEPROM will most likely contain an invalid checksum.
974 s32 ixgbe_write_eeprom_generic(struct ixgbe_hw *hw, u16 offset, u16 data)
978 hw->eeprom.ops.init_params(hw);
980 if (offset >= hw->eeprom.word_size) {
981 status = IXGBE_ERR_EEPROM;
985 status = ixgbe_write_eeprom_buffer_bit_bang(hw, offset, 1, &data);
992 * ixgbe_read_eeprom_buffer_bit_bang_generic - Read EEPROM using bit-bang
993 * @hw: pointer to hardware structure
994 * @offset: offset within the EEPROM to be read
995 * @words: number of word(s)
996 * @data: read 16 bit words(s) from EEPROM
998 * Reads 16 bit word(s) from EEPROM through bit-bang method
1000 s32 ixgbe_read_eeprom_buffer_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
1001 u16 words, u16 *data)
1006 hw->eeprom.ops.init_params(hw);
1009 status = IXGBE_ERR_INVALID_ARGUMENT;
1013 if (offset + words > hw->eeprom.word_size) {
1014 status = IXGBE_ERR_EEPROM;
1019 * We cannot hold synchronization semaphores for too long
1020 * to avoid other entity starvation. However it is more efficient
1021 * to read in bursts than synchronizing access for each word.
1023 for (i = 0; i < words; i += IXGBE_EEPROM_RD_BUFFER_MAX_COUNT) {
1024 count = (words - i) / IXGBE_EEPROM_RD_BUFFER_MAX_COUNT > 0 ?
1025 IXGBE_EEPROM_RD_BUFFER_MAX_COUNT : (words - i);
1027 status = ixgbe_read_eeprom_buffer_bit_bang(hw, offset + i,
1039 * ixgbe_read_eeprom_buffer_bit_bang - Read EEPROM using bit-bang
1040 * @hw: pointer to hardware structure
1041 * @offset: offset within the EEPROM to be read
1042 * @words: number of word(s)
1043 * @data: read 16 bit word(s) from EEPROM
1045 * Reads 16 bit word(s) from EEPROM through bit-bang method
1047 static s32 ixgbe_read_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset,
1048 u16 words, u16 *data)
1052 u8 read_opcode = IXGBE_EEPROM_READ_OPCODE_SPI;
1055 /* Prepare the EEPROM for reading */
1056 status = ixgbe_acquire_eeprom(hw);
1059 if (ixgbe_ready_eeprom(hw) != 0) {
1060 ixgbe_release_eeprom(hw);
1061 status = IXGBE_ERR_EEPROM;
1066 for (i = 0; i < words; i++) {
1067 ixgbe_standby_eeprom(hw);
1069 * Some SPI eeproms use the 8th address bit embedded
1072 if ((hw->eeprom.address_bits == 8) &&
1073 ((offset + i) >= 128))
1074 read_opcode |= IXGBE_EEPROM_A8_OPCODE_SPI;
1076 /* Send the READ command (opcode + addr) */
1077 ixgbe_shift_out_eeprom_bits(hw, read_opcode,
1078 IXGBE_EEPROM_OPCODE_BITS);
1079 ixgbe_shift_out_eeprom_bits(hw, (u16)((offset + i) * 2),
1080 hw->eeprom.address_bits);
1082 /* Read the data. */
1083 word_in = ixgbe_shift_in_eeprom_bits(hw, 16);
1084 data[i] = (word_in >> 8) | (word_in << 8);
1087 /* End this read operation */
1088 ixgbe_release_eeprom(hw);
1095 * ixgbe_read_eeprom_bit_bang_generic - Read EEPROM word using bit-bang
1096 * @hw: pointer to hardware structure
1097 * @offset: offset within the EEPROM to be read
1098 * @data: read 16 bit value from EEPROM
1100 * Reads 16 bit value from EEPROM through bit-bang method
1102 s32 ixgbe_read_eeprom_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
1107 hw->eeprom.ops.init_params(hw);
1109 if (offset >= hw->eeprom.word_size) {
1110 status = IXGBE_ERR_EEPROM;
1114 status = ixgbe_read_eeprom_buffer_bit_bang(hw, offset, 1, data);
1121 * ixgbe_read_eerd_buffer_generic - Read EEPROM word(s) using EERD
1122 * @hw: pointer to hardware structure
1123 * @offset: offset of word in the EEPROM to read
1124 * @words: number of word(s)
1125 * @data: 16 bit word(s) from the EEPROM
1127 * Reads a 16 bit word(s) from the EEPROM using the EERD register.
1129 s32 ixgbe_read_eerd_buffer_generic(struct ixgbe_hw *hw, u16 offset,
1130 u16 words, u16 *data)
1136 hw->eeprom.ops.init_params(hw);
1139 status = IXGBE_ERR_INVALID_ARGUMENT;
1143 if (offset >= hw->eeprom.word_size) {
1144 status = IXGBE_ERR_EEPROM;
1148 for (i = 0; i < words; i++) {
1149 eerd = ((offset + i) << IXGBE_EEPROM_RW_ADDR_SHIFT) |
1150 IXGBE_EEPROM_RW_REG_START;
1152 IXGBE_WRITE_REG(hw, IXGBE_EERD, eerd);
1153 status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_READ);
1156 data[i] = (IXGBE_READ_REG(hw, IXGBE_EERD) >>
1157 IXGBE_EEPROM_RW_REG_DATA);
1159 hw_dbg(hw, "Eeprom read timed out\n");
1168 * ixgbe_detect_eeprom_page_size_generic - Detect EEPROM page size
1169 * @hw: pointer to hardware structure
1170 * @offset: offset within the EEPROM to be used as a scratch pad
1172 * Discover EEPROM page size by writing marching data at given offset.
1173 * This function is called only when we are writing a new large buffer
1174 * at given offset so the data would be overwritten anyway.
1176 static s32 ixgbe_detect_eeprom_page_size_generic(struct ixgbe_hw *hw,
1179 u16 data[IXGBE_EEPROM_PAGE_SIZE_MAX];
1183 for (i = 0; i < IXGBE_EEPROM_PAGE_SIZE_MAX; i++)
1186 hw->eeprom.word_page_size = IXGBE_EEPROM_PAGE_SIZE_MAX;
1187 status = ixgbe_write_eeprom_buffer_bit_bang(hw, offset,
1188 IXGBE_EEPROM_PAGE_SIZE_MAX, data);
1189 hw->eeprom.word_page_size = 0;
1193 status = ixgbe_read_eeprom_buffer_bit_bang(hw, offset, 1, data);
1198 * When writing in burst more than the actual page size
1199 * EEPROM address wraps around current page.
1201 hw->eeprom.word_page_size = IXGBE_EEPROM_PAGE_SIZE_MAX - data[0];
1203 hw_dbg(hw, "Detected EEPROM page size = %d words.",
1204 hw->eeprom.word_page_size);
1210 * ixgbe_read_eerd_generic - Read EEPROM word using EERD
1211 * @hw: pointer to hardware structure
1212 * @offset: offset of word in the EEPROM to read
1213 * @data: word read from the EEPROM
1215 * Reads a 16 bit word from the EEPROM using the EERD register.
1217 s32 ixgbe_read_eerd_generic(struct ixgbe_hw *hw, u16 offset, u16 *data)
1219 return ixgbe_read_eerd_buffer_generic(hw, offset, 1, data);
1223 * ixgbe_write_eewr_buffer_generic - Write EEPROM word(s) using EEWR
1224 * @hw: pointer to hardware structure
1225 * @offset: offset of word in the EEPROM to write
1226 * @words: number of words
1227 * @data: word(s) write to the EEPROM
1229 * Write a 16 bit word(s) to the EEPROM using the EEWR register.
1231 s32 ixgbe_write_eewr_buffer_generic(struct ixgbe_hw *hw, u16 offset,
1232 u16 words, u16 *data)
1238 hw->eeprom.ops.init_params(hw);
1241 status = IXGBE_ERR_INVALID_ARGUMENT;
1245 if (offset >= hw->eeprom.word_size) {
1246 status = IXGBE_ERR_EEPROM;
1250 for (i = 0; i < words; i++) {
1251 eewr = ((offset + i) << IXGBE_EEPROM_RW_ADDR_SHIFT) |
1252 (data[i] << IXGBE_EEPROM_RW_REG_DATA) |
1253 IXGBE_EEPROM_RW_REG_START;
1255 status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_WRITE);
1257 hw_dbg(hw, "Eeprom write EEWR timed out\n");
1261 IXGBE_WRITE_REG(hw, IXGBE_EEWR, eewr);
1263 status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_WRITE);
1265 hw_dbg(hw, "Eeprom write EEWR timed out\n");
1275 * ixgbe_write_eewr_generic - Write EEPROM word using EEWR
1276 * @hw: pointer to hardware structure
1277 * @offset: offset of word in the EEPROM to write
1278 * @data: word write to the EEPROM
1280 * Write a 16 bit word to the EEPROM using the EEWR register.
1282 s32 ixgbe_write_eewr_generic(struct ixgbe_hw *hw, u16 offset, u16 data)
1284 return ixgbe_write_eewr_buffer_generic(hw, offset, 1, &data);
1288 * ixgbe_poll_eerd_eewr_done - Poll EERD read or EEWR write status
1289 * @hw: pointer to hardware structure
1290 * @ee_reg: EEPROM flag for polling
1292 * Polls the status bit (bit 1) of the EERD or EEWR to determine when the
1293 * read or write is done respectively.
1295 static s32 ixgbe_poll_eerd_eewr_done(struct ixgbe_hw *hw, u32 ee_reg)
1299 s32 status = IXGBE_ERR_EEPROM;
1301 for (i = 0; i < IXGBE_EERD_EEWR_ATTEMPTS; i++) {
1302 if (ee_reg == IXGBE_NVM_POLL_READ)
1303 reg = IXGBE_READ_REG(hw, IXGBE_EERD);
1305 reg = IXGBE_READ_REG(hw, IXGBE_EEWR);
1307 if (reg & IXGBE_EEPROM_RW_REG_DONE) {
1317 * ixgbe_acquire_eeprom - Acquire EEPROM using bit-bang
1318 * @hw: pointer to hardware structure
1320 * Prepares EEPROM for access using bit-bang method. This function should
1321 * be called before issuing a command to the EEPROM.
1323 static s32 ixgbe_acquire_eeprom(struct ixgbe_hw *hw)
1329 if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) != 0)
1330 status = IXGBE_ERR_SWFW_SYNC;
1333 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1335 /* Request EEPROM Access */
1336 eec |= IXGBE_EEC_REQ;
1337 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1339 for (i = 0; i < IXGBE_EEPROM_GRANT_ATTEMPTS; i++) {
1340 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1341 if (eec & IXGBE_EEC_GNT)
1346 /* Release if grant not acquired */
1347 if (!(eec & IXGBE_EEC_GNT)) {
1348 eec &= ~IXGBE_EEC_REQ;
1349 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1350 hw_dbg(hw, "Could not acquire EEPROM grant\n");
1352 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
1353 status = IXGBE_ERR_EEPROM;
1356 /* Setup EEPROM for Read/Write */
1358 /* Clear CS and SK */
1359 eec &= ~(IXGBE_EEC_CS | IXGBE_EEC_SK);
1360 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1361 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)
1376 s32 status = IXGBE_ERR_EEPROM;
1381 /* Get SMBI software semaphore between device drivers first */
1382 for (i = 0; i < timeout; i++) {
1384 * If the SMBI bit is 0 when we read it, then the bit will be
1385 * set and we have the semaphore
1387 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
1388 if (!(swsm & IXGBE_SWSM_SMBI)) {
1396 hw_dbg(hw, "Driver can't access the Eeprom - SMBI Semaphore "
1399 * this release is particularly important because our attempts
1400 * above to get the semaphore may have succeeded, and if there
1401 * was a timeout, we should unconditionally clear the semaphore
1402 * bits to free the driver to make progress
1404 ixgbe_release_eeprom_semaphore(hw);
1409 * If the SMBI bit is 0 when we read it, then the bit will be
1410 * set and we have the semaphore
1412 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
1413 if (!(swsm & IXGBE_SWSM_SMBI))
1417 /* Now get the semaphore between SW/FW through the SWESMBI bit */
1419 for (i = 0; i < timeout; i++) {
1420 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
1422 /* Set the SW EEPROM semaphore bit to request access */
1423 swsm |= IXGBE_SWSM_SWESMBI;
1424 IXGBE_WRITE_REG(hw, IXGBE_SWSM, swsm);
1427 * If we set the bit successfully then we got the
1430 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
1431 if (swsm & IXGBE_SWSM_SWESMBI)
1438 * Release semaphores and return error if SW EEPROM semaphore
1439 * was not granted because we don't have access to the EEPROM
1442 hw_dbg(hw, "SWESMBI Software EEPROM semaphore "
1444 ixgbe_release_eeprom_semaphore(hw);
1445 status = IXGBE_ERR_EEPROM;
1448 hw_dbg(hw, "Software semaphore SMBI between device drivers "
1456 * ixgbe_release_eeprom_semaphore - Release hardware semaphore
1457 * @hw: pointer to hardware structure
1459 * This function clears hardware semaphore bits.
1461 static void ixgbe_release_eeprom_semaphore(struct ixgbe_hw *hw)
1465 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
1467 /* Release both semaphores by writing 0 to the bits SWESMBI and SMBI */
1468 swsm &= ~(IXGBE_SWSM_SWESMBI | IXGBE_SWSM_SMBI);
1469 IXGBE_WRITE_REG(hw, IXGBE_SWSM, swsm);
1470 IXGBE_WRITE_FLUSH(hw);
1474 * ixgbe_ready_eeprom - Polls for EEPROM ready
1475 * @hw: pointer to hardware structure
1477 static s32 ixgbe_ready_eeprom(struct ixgbe_hw *hw)
1484 * Read "Status Register" repeatedly until the LSB is cleared. The
1485 * EEPROM will signal that the command has been completed by clearing
1486 * bit 0 of the internal status register. If it's not cleared within
1487 * 5 milliseconds, then error out.
1489 for (i = 0; i < IXGBE_EEPROM_MAX_RETRY_SPI; i += 5) {
1490 ixgbe_shift_out_eeprom_bits(hw, IXGBE_EEPROM_RDSR_OPCODE_SPI,
1491 IXGBE_EEPROM_OPCODE_BITS);
1492 spi_stat_reg = (u8)ixgbe_shift_in_eeprom_bits(hw, 8);
1493 if (!(spi_stat_reg & IXGBE_EEPROM_STATUS_RDY_SPI))
1497 ixgbe_standby_eeprom(hw);
1501 * On some parts, SPI write time could vary from 0-20mSec on 3.3V
1502 * devices (and only 0-5mSec on 5V devices)
1504 if (i >= IXGBE_EEPROM_MAX_RETRY_SPI) {
1505 hw_dbg(hw, "SPI EEPROM Status error\n");
1506 status = IXGBE_ERR_EEPROM;
1513 * ixgbe_standby_eeprom - Returns EEPROM to a "standby" state
1514 * @hw: pointer to hardware structure
1516 static void ixgbe_standby_eeprom(struct ixgbe_hw *hw)
1520 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1522 /* Toggle CS to flush commands */
1523 eec |= IXGBE_EEC_CS;
1524 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1525 IXGBE_WRITE_FLUSH(hw);
1527 eec &= ~IXGBE_EEC_CS;
1528 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1529 IXGBE_WRITE_FLUSH(hw);
1534 * ixgbe_shift_out_eeprom_bits - Shift data bits out to the EEPROM.
1535 * @hw: pointer to hardware structure
1536 * @data: data to send to the EEPROM
1537 * @count: number of bits to shift out
1539 static void ixgbe_shift_out_eeprom_bits(struct ixgbe_hw *hw, u16 data,
1546 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1549 * Mask is used to shift "count" bits of "data" out to the EEPROM
1550 * one bit at a time. Determine the starting bit based on count
1552 mask = 0x01 << (count - 1);
1554 for (i = 0; i < count; i++) {
1556 * A "1" is shifted out to the EEPROM by setting bit "DI" to a
1557 * "1", and then raising and then lowering the clock (the SK
1558 * bit controls the clock input to the EEPROM). A "0" is
1559 * shifted out to the EEPROM by setting "DI" to "0" and then
1560 * raising and then lowering the clock.
1563 eec |= IXGBE_EEC_DI;
1565 eec &= ~IXGBE_EEC_DI;
1567 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1568 IXGBE_WRITE_FLUSH(hw);
1572 ixgbe_raise_eeprom_clk(hw, &eec);
1573 ixgbe_lower_eeprom_clk(hw, &eec);
1576 * Shift mask to signify next bit of data to shift in to the
1582 /* We leave the "DI" bit set to "0" when we leave this routine. */
1583 eec &= ~IXGBE_EEC_DI;
1584 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1585 IXGBE_WRITE_FLUSH(hw);
1589 * ixgbe_shift_in_eeprom_bits - Shift data bits in from the EEPROM
1590 * @hw: pointer to hardware structure
1592 static u16 ixgbe_shift_in_eeprom_bits(struct ixgbe_hw *hw, u16 count)
1599 * In order to read a register from the EEPROM, we need to shift
1600 * 'count' bits in from the EEPROM. Bits are "shifted in" by raising
1601 * the clock input to the EEPROM (setting the SK bit), and then reading
1602 * the value of the "DO" bit. During this "shifting in" process the
1603 * "DI" bit should always be clear.
1605 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1607 eec &= ~(IXGBE_EEC_DO | IXGBE_EEC_DI);
1609 for (i = 0; i < count; i++) {
1611 ixgbe_raise_eeprom_clk(hw, &eec);
1613 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1615 eec &= ~(IXGBE_EEC_DI);
1616 if (eec & IXGBE_EEC_DO)
1619 ixgbe_lower_eeprom_clk(hw, &eec);
1626 * ixgbe_raise_eeprom_clk - Raises the EEPROM's clock input.
1627 * @hw: pointer to hardware structure
1628 * @eec: EEC register's current value
1630 static void ixgbe_raise_eeprom_clk(struct ixgbe_hw *hw, u32 *eec)
1633 * Raise the clock input to the EEPROM
1634 * (setting the SK bit), then delay
1636 *eec = *eec | IXGBE_EEC_SK;
1637 IXGBE_WRITE_REG(hw, IXGBE_EEC, *eec);
1638 IXGBE_WRITE_FLUSH(hw);
1643 * ixgbe_lower_eeprom_clk - Lowers the EEPROM's clock input.
1644 * @hw: pointer to hardware structure
1645 * @eecd: EECD's current value
1647 static void ixgbe_lower_eeprom_clk(struct ixgbe_hw *hw, u32 *eec)
1650 * Lower the clock input to the EEPROM (clearing the SK bit), then
1653 *eec = *eec & ~IXGBE_EEC_SK;
1654 IXGBE_WRITE_REG(hw, IXGBE_EEC, *eec);
1655 IXGBE_WRITE_FLUSH(hw);
1660 * ixgbe_release_eeprom - Release EEPROM, release semaphores
1661 * @hw: pointer to hardware structure
1663 static void ixgbe_release_eeprom(struct ixgbe_hw *hw)
1667 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1669 eec |= IXGBE_EEC_CS; /* Pull CS high */
1670 eec &= ~IXGBE_EEC_SK; /* Lower SCK */
1672 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1673 IXGBE_WRITE_FLUSH(hw);
1677 /* Stop requesting EEPROM access */
1678 eec &= ~IXGBE_EEC_REQ;
1679 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1681 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
1684 * Delay before attempt to obtain semaphore again to allow FW
1685 * access. semaphore_delay is in ms we need us for usleep_range
1687 usleep_range(hw->eeprom.semaphore_delay * 1000,
1688 hw->eeprom.semaphore_delay * 2000);
1692 * ixgbe_calc_eeprom_checksum_generic - Calculates and returns the checksum
1693 * @hw: pointer to hardware structure
1695 u16 ixgbe_calc_eeprom_checksum_generic(struct ixgbe_hw *hw)
1704 /* Include 0x0-0x3F in the checksum */
1705 for (i = 0; i < IXGBE_EEPROM_CHECKSUM; i++) {
1706 if (hw->eeprom.ops.read(hw, i, &word) != 0) {
1707 hw_dbg(hw, "EEPROM read failed\n");
1713 /* Include all data from pointers except for the fw pointer */
1714 for (i = IXGBE_PCIE_ANALOG_PTR; i < IXGBE_FW_PTR; i++) {
1715 hw->eeprom.ops.read(hw, i, &pointer);
1717 /* Make sure the pointer seems valid */
1718 if (pointer != 0xFFFF && pointer != 0) {
1719 hw->eeprom.ops.read(hw, pointer, &length);
1721 if (length != 0xFFFF && length != 0) {
1722 for (j = pointer+1; j <= pointer+length; j++) {
1723 hw->eeprom.ops.read(hw, j, &word);
1730 checksum = (u16)IXGBE_EEPROM_SUM - checksum;
1736 * ixgbe_validate_eeprom_checksum_generic - Validate EEPROM checksum
1737 * @hw: pointer to hardware structure
1738 * @checksum_val: calculated checksum
1740 * Performs checksum calculation and validates the EEPROM checksum. If the
1741 * caller does not need checksum_val, the value can be NULL.
1743 s32 ixgbe_validate_eeprom_checksum_generic(struct ixgbe_hw *hw,
1748 u16 read_checksum = 0;
1751 * Read the first word from the EEPROM. If this times out or fails, do
1752 * not continue or we could be in for a very long wait while every
1755 status = hw->eeprom.ops.read(hw, 0, &checksum);
1758 checksum = hw->eeprom.ops.calc_checksum(hw);
1760 hw->eeprom.ops.read(hw, IXGBE_EEPROM_CHECKSUM, &read_checksum);
1763 * Verify read checksum from EEPROM is the same as
1764 * calculated checksum
1766 if (read_checksum != checksum)
1767 status = IXGBE_ERR_EEPROM_CHECKSUM;
1769 /* If the user cares, return the calculated checksum */
1771 *checksum_val = checksum;
1773 hw_dbg(hw, "EEPROM read failed\n");
1780 * ixgbe_update_eeprom_checksum_generic - Updates the EEPROM checksum
1781 * @hw: pointer to hardware structure
1783 s32 ixgbe_update_eeprom_checksum_generic(struct ixgbe_hw *hw)
1789 * Read the first word from the EEPROM. If this times out or fails, do
1790 * not continue or we could be in for a very long wait while every
1793 status = hw->eeprom.ops.read(hw, 0, &checksum);
1796 checksum = hw->eeprom.ops.calc_checksum(hw);
1797 status = hw->eeprom.ops.write(hw, IXGBE_EEPROM_CHECKSUM,
1800 hw_dbg(hw, "EEPROM read failed\n");
1807 * ixgbe_set_rar_generic - Set Rx address register
1808 * @hw: pointer to hardware structure
1809 * @index: Receive address register to write
1810 * @addr: Address to put into receive address register
1811 * @vmdq: VMDq "set" or "pool" index
1812 * @enable_addr: set flag that address is active
1814 * Puts an ethernet address into a receive address register.
1816 s32 ixgbe_set_rar_generic(struct ixgbe_hw *hw, u32 index, u8 *addr, u32 vmdq,
1819 u32 rar_low, rar_high;
1820 u32 rar_entries = hw->mac.num_rar_entries;
1822 /* Make sure we are using a valid rar index range */
1823 if (index >= rar_entries) {
1824 hw_dbg(hw, "RAR index %d is out of range.\n", index);
1825 return IXGBE_ERR_INVALID_ARGUMENT;
1828 /* setup VMDq pool selection before this RAR gets enabled */
1829 hw->mac.ops.set_vmdq(hw, index, vmdq);
1832 * HW expects these in little endian so we reverse the byte
1833 * order from network order (big endian) to little endian
1835 rar_low = ((u32)addr[0] |
1836 ((u32)addr[1] << 8) |
1837 ((u32)addr[2] << 16) |
1838 ((u32)addr[3] << 24));
1840 * Some parts put the VMDq setting in the extra RAH bits,
1841 * so save everything except the lower 16 bits that hold part
1842 * of the address and the address valid bit.
1844 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index));
1845 rar_high &= ~(0x0000FFFF | IXGBE_RAH_AV);
1846 rar_high |= ((u32)addr[4] | ((u32)addr[5] << 8));
1848 if (enable_addr != 0)
1849 rar_high |= IXGBE_RAH_AV;
1851 IXGBE_WRITE_REG(hw, IXGBE_RAL(index), rar_low);
1852 IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high);
1858 * ixgbe_clear_rar_generic - Remove Rx address register
1859 * @hw: pointer to hardware structure
1860 * @index: Receive address register to write
1862 * Clears an ethernet address from a receive address register.
1864 s32 ixgbe_clear_rar_generic(struct ixgbe_hw *hw, u32 index)
1867 u32 rar_entries = hw->mac.num_rar_entries;
1869 /* Make sure we are using a valid rar index range */
1870 if (index >= rar_entries) {
1871 hw_dbg(hw, "RAR index %d is out of range.\n", index);
1872 return IXGBE_ERR_INVALID_ARGUMENT;
1876 * Some parts put the VMDq setting in the extra RAH bits,
1877 * so save everything except the lower 16 bits that hold part
1878 * of the address and the address valid bit.
1880 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index));
1881 rar_high &= ~(0x0000FFFF | IXGBE_RAH_AV);
1883 IXGBE_WRITE_REG(hw, IXGBE_RAL(index), 0);
1884 IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high);
1886 /* clear VMDq pool/queue selection for this RAR */
1887 hw->mac.ops.clear_vmdq(hw, index, IXGBE_CLEAR_VMDQ_ALL);
1893 * ixgbe_init_rx_addrs_generic - Initializes receive address filters.
1894 * @hw: pointer to hardware structure
1896 * Places the MAC address in receive address register 0 and clears the rest
1897 * of the receive address registers. Clears the multicast table. Assumes
1898 * the receiver is in reset when the routine is called.
1900 s32 ixgbe_init_rx_addrs_generic(struct ixgbe_hw *hw)
1903 u32 rar_entries = hw->mac.num_rar_entries;
1906 * If the current mac address is valid, assume it is a software override
1907 * to the permanent address.
1908 * Otherwise, use the permanent address from the eeprom.
1910 if (!is_valid_ether_addr(hw->mac.addr)) {
1911 /* Get the MAC address from the RAR0 for later reference */
1912 hw->mac.ops.get_mac_addr(hw, hw->mac.addr);
1914 hw_dbg(hw, " Keeping Current RAR0 Addr =%pM\n", hw->mac.addr);
1916 /* Setup the receive address. */
1917 hw_dbg(hw, "Overriding MAC Address in RAR[0]\n");
1918 hw_dbg(hw, " New MAC Addr =%pM\n", hw->mac.addr);
1920 hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0, IXGBE_RAH_AV);
1922 /* clear VMDq pool/queue selection for RAR 0 */
1923 hw->mac.ops.clear_vmdq(hw, 0, IXGBE_CLEAR_VMDQ_ALL);
1925 hw->addr_ctrl.overflow_promisc = 0;
1927 hw->addr_ctrl.rar_used_count = 1;
1929 /* Zero out the other receive addresses. */
1930 hw_dbg(hw, "Clearing RAR[1-%d]\n", rar_entries - 1);
1931 for (i = 1; i < rar_entries; i++) {
1932 IXGBE_WRITE_REG(hw, IXGBE_RAL(i), 0);
1933 IXGBE_WRITE_REG(hw, IXGBE_RAH(i), 0);
1937 hw->addr_ctrl.mta_in_use = 0;
1938 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, hw->mac.mc_filter_type);
1940 hw_dbg(hw, " Clearing MTA\n");
1941 for (i = 0; i < hw->mac.mcft_size; i++)
1942 IXGBE_WRITE_REG(hw, IXGBE_MTA(i), 0);
1944 if (hw->mac.ops.init_uta_tables)
1945 hw->mac.ops.init_uta_tables(hw);
1951 * ixgbe_mta_vector - Determines bit-vector in multicast table to set
1952 * @hw: pointer to hardware structure
1953 * @mc_addr: the multicast address
1955 * Extracts the 12 bits, from a multicast address, to determine which
1956 * bit-vector to set in the multicast table. The hardware uses 12 bits, from
1957 * incoming rx multicast addresses, to determine the bit-vector to check in
1958 * the MTA. Which of the 4 combination, of 12-bits, the hardware uses is set
1959 * by the MO field of the MCSTCTRL. The MO field is set during initialization
1960 * to mc_filter_type.
1962 static s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr)
1966 switch (hw->mac.mc_filter_type) {
1967 case 0: /* use bits [47:36] of the address */
1968 vector = ((mc_addr[4] >> 4) | (((u16)mc_addr[5]) << 4));
1970 case 1: /* use bits [46:35] of the address */
1971 vector = ((mc_addr[4] >> 3) | (((u16)mc_addr[5]) << 5));
1973 case 2: /* use bits [45:34] of the address */
1974 vector = ((mc_addr[4] >> 2) | (((u16)mc_addr[5]) << 6));
1976 case 3: /* use bits [43:32] of the address */
1977 vector = ((mc_addr[4]) | (((u16)mc_addr[5]) << 8));
1979 default: /* Invalid mc_filter_type */
1980 hw_dbg(hw, "MC filter type param set incorrectly\n");
1984 /* vector can only be 12-bits or boundary will be exceeded */
1990 * ixgbe_set_mta - Set bit-vector in multicast table
1991 * @hw: pointer to hardware structure
1992 * @hash_value: Multicast address hash value
1994 * Sets the bit-vector in the multicast table.
1996 static void ixgbe_set_mta(struct ixgbe_hw *hw, u8 *mc_addr)
2002 hw->addr_ctrl.mta_in_use++;
2004 vector = ixgbe_mta_vector(hw, mc_addr);
2005 hw_dbg(hw, " bit-vector = 0x%03X\n", vector);
2008 * The MTA is a register array of 128 32-bit registers. It is treated
2009 * like an array of 4096 bits. We want to set bit
2010 * BitArray[vector_value]. So we figure out what register the bit is
2011 * in, read it, OR in the new bit, then write back the new value. The
2012 * register is determined by the upper 7 bits of the vector value and
2013 * the bit within that register are determined by the lower 5 bits of
2016 vector_reg = (vector >> 5) & 0x7F;
2017 vector_bit = vector & 0x1F;
2018 hw->mac.mta_shadow[vector_reg] |= (1 << vector_bit);
2022 * ixgbe_update_mc_addr_list_generic - Updates MAC list of multicast addresses
2023 * @hw: pointer to hardware structure
2024 * @netdev: pointer to net device structure
2026 * The given list replaces any existing list. Clears the MC addrs from receive
2027 * address registers and the multicast table. Uses unused receive address
2028 * registers for the first multicast addresses, and hashes the rest into the
2031 s32 ixgbe_update_mc_addr_list_generic(struct ixgbe_hw *hw,
2032 struct net_device *netdev)
2034 struct netdev_hw_addr *ha;
2038 * Set the new number of MC addresses that we are being requested to
2041 hw->addr_ctrl.num_mc_addrs = netdev_mc_count(netdev);
2042 hw->addr_ctrl.mta_in_use = 0;
2044 /* Clear mta_shadow */
2045 hw_dbg(hw, " Clearing MTA\n");
2046 memset(&hw->mac.mta_shadow, 0, sizeof(hw->mac.mta_shadow));
2048 /* Update mta shadow */
2049 netdev_for_each_mc_addr(ha, netdev) {
2050 hw_dbg(hw, " Adding the multicast addresses:\n");
2051 ixgbe_set_mta(hw, ha->addr);
2055 for (i = 0; i < hw->mac.mcft_size; i++)
2056 IXGBE_WRITE_REG_ARRAY(hw, IXGBE_MTA(0), i,
2057 hw->mac.mta_shadow[i]);
2059 if (hw->addr_ctrl.mta_in_use > 0)
2060 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL,
2061 IXGBE_MCSTCTRL_MFE | hw->mac.mc_filter_type);
2063 hw_dbg(hw, "ixgbe_update_mc_addr_list_generic Complete\n");
2068 * ixgbe_enable_mc_generic - Enable multicast address in RAR
2069 * @hw: pointer to hardware structure
2071 * Enables multicast address in RAR and the use of the multicast hash table.
2073 s32 ixgbe_enable_mc_generic(struct ixgbe_hw *hw)
2075 struct ixgbe_addr_filter_info *a = &hw->addr_ctrl;
2077 if (a->mta_in_use > 0)
2078 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, IXGBE_MCSTCTRL_MFE |
2079 hw->mac.mc_filter_type);
2085 * ixgbe_disable_mc_generic - Disable multicast address in RAR
2086 * @hw: pointer to hardware structure
2088 * Disables multicast address in RAR and the use of the multicast hash table.
2090 s32 ixgbe_disable_mc_generic(struct ixgbe_hw *hw)
2092 struct ixgbe_addr_filter_info *a = &hw->addr_ctrl;
2094 if (a->mta_in_use > 0)
2095 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, hw->mac.mc_filter_type);
2101 * ixgbe_fc_enable_generic - Enable flow control
2102 * @hw: pointer to hardware structure
2104 * Enable flow control according to the current settings.
2106 s32 ixgbe_fc_enable_generic(struct ixgbe_hw *hw)
2109 u32 mflcn_reg, fccfg_reg;
2115 * Validate the water mark configuration for packet buffer 0. Zero
2116 * water marks indicate that the packet buffer was not configured
2117 * and the watermarks for packet buffer 0 should always be configured.
2119 if (!hw->fc.low_water ||
2120 !hw->fc.high_water[0] ||
2121 !hw->fc.pause_time) {
2122 hw_dbg(hw, "Invalid water mark configuration\n");
2123 ret_val = IXGBE_ERR_INVALID_LINK_SETTINGS;
2127 /* Negotiate the fc mode to use */
2128 ixgbe_fc_autoneg(hw);
2130 /* Disable any previous flow control settings */
2131 mflcn_reg = IXGBE_READ_REG(hw, IXGBE_MFLCN);
2132 mflcn_reg &= ~(IXGBE_MFLCN_RPFCE_MASK | IXGBE_MFLCN_RFCE);
2134 fccfg_reg = IXGBE_READ_REG(hw, IXGBE_FCCFG);
2135 fccfg_reg &= ~(IXGBE_FCCFG_TFCE_802_3X | IXGBE_FCCFG_TFCE_PRIORITY);
2138 * The possible values of fc.current_mode are:
2139 * 0: Flow control is completely disabled
2140 * 1: Rx flow control is enabled (we can receive pause frames,
2141 * but not send pause frames).
2142 * 2: Tx flow control is enabled (we can send pause frames but
2143 * we do not support receiving pause frames).
2144 * 3: Both Rx and Tx flow control (symmetric) are enabled.
2147 switch (hw->fc.current_mode) {
2150 * Flow control is disabled by software override or autoneg.
2151 * The code below will actually disable it in the HW.
2154 case ixgbe_fc_rx_pause:
2156 * Rx Flow control is enabled and Tx Flow control is
2157 * disabled by software override. Since there really
2158 * isn't a way to advertise that we are capable of RX
2159 * Pause ONLY, we will advertise that we support both
2160 * symmetric and asymmetric Rx PAUSE. Later, we will
2161 * disable the adapter's ability to send PAUSE frames.
2163 mflcn_reg |= IXGBE_MFLCN_RFCE;
2165 case ixgbe_fc_tx_pause:
2167 * Tx Flow control is enabled, and Rx Flow control is
2168 * disabled by software override.
2170 fccfg_reg |= IXGBE_FCCFG_TFCE_802_3X;
2173 /* Flow control (both Rx and Tx) is enabled by SW override. */
2174 mflcn_reg |= IXGBE_MFLCN_RFCE;
2175 fccfg_reg |= IXGBE_FCCFG_TFCE_802_3X;
2178 hw_dbg(hw, "Flow control param set incorrectly\n");
2179 ret_val = IXGBE_ERR_CONFIG;
2184 /* Set 802.3x based flow control settings. */
2185 mflcn_reg |= IXGBE_MFLCN_DPF;
2186 IXGBE_WRITE_REG(hw, IXGBE_MFLCN, mflcn_reg);
2187 IXGBE_WRITE_REG(hw, IXGBE_FCCFG, fccfg_reg);
2189 fcrtl = (hw->fc.low_water << 10) | IXGBE_FCRTL_XONE;
2191 /* Set up and enable Rx high/low water mark thresholds, enable XON. */
2192 for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
2193 if ((hw->fc.current_mode & ixgbe_fc_tx_pause) &&
2194 hw->fc.high_water[i]) {
2195 IXGBE_WRITE_REG(hw, IXGBE_FCRTL_82599(i), fcrtl);
2196 fcrth = (hw->fc.high_water[i] << 10) | IXGBE_FCRTH_FCEN;
2198 IXGBE_WRITE_REG(hw, IXGBE_FCRTL_82599(i), 0);
2200 * In order to prevent Tx hangs when the internal Tx
2201 * switch is enabled we must set the high water mark
2202 * to the maximum FCRTH value. This allows the Tx
2203 * switch to function even under heavy Rx workloads.
2205 fcrth = IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(i)) - 32;
2208 IXGBE_WRITE_REG(hw, IXGBE_FCRTH_82599(i), fcrth);
2211 /* Configure pause time (2 TCs per register) */
2212 reg = hw->fc.pause_time * 0x00010001;
2213 for (i = 0; i < (MAX_TRAFFIC_CLASS / 2); i++)
2214 IXGBE_WRITE_REG(hw, IXGBE_FCTTV(i), reg);
2216 IXGBE_WRITE_REG(hw, IXGBE_FCRTV, hw->fc.pause_time / 2);
2223 * ixgbe_negotiate_fc - Negotiate flow control
2224 * @hw: pointer to hardware structure
2225 * @adv_reg: flow control advertised settings
2226 * @lp_reg: link partner's flow control settings
2227 * @adv_sym: symmetric pause bit in advertisement
2228 * @adv_asm: asymmetric pause bit in advertisement
2229 * @lp_sym: symmetric pause bit in link partner advertisement
2230 * @lp_asm: asymmetric pause bit in link partner advertisement
2232 * Find the intersection between advertised settings and link partner's
2233 * advertised settings
2235 static s32 ixgbe_negotiate_fc(struct ixgbe_hw *hw, u32 adv_reg, u32 lp_reg,
2236 u32 adv_sym, u32 adv_asm, u32 lp_sym, u32 lp_asm)
2238 if ((!(adv_reg)) || (!(lp_reg)))
2239 return IXGBE_ERR_FC_NOT_NEGOTIATED;
2241 if ((adv_reg & adv_sym) && (lp_reg & lp_sym)) {
2243 * Now we need to check if the user selected Rx ONLY
2244 * of pause frames. In this case, we had to advertise
2245 * FULL flow control because we could not advertise RX
2246 * ONLY. Hence, we must now check to see if we need to
2247 * turn OFF the TRANSMISSION of PAUSE frames.
2249 if (hw->fc.requested_mode == ixgbe_fc_full) {
2250 hw->fc.current_mode = ixgbe_fc_full;
2251 hw_dbg(hw, "Flow Control = FULL.\n");
2253 hw->fc.current_mode = ixgbe_fc_rx_pause;
2254 hw_dbg(hw, "Flow Control=RX PAUSE frames only\n");
2256 } else if (!(adv_reg & adv_sym) && (adv_reg & adv_asm) &&
2257 (lp_reg & lp_sym) && (lp_reg & lp_asm)) {
2258 hw->fc.current_mode = ixgbe_fc_tx_pause;
2259 hw_dbg(hw, "Flow Control = TX PAUSE frames only.\n");
2260 } else if ((adv_reg & adv_sym) && (adv_reg & adv_asm) &&
2261 !(lp_reg & lp_sym) && (lp_reg & lp_asm)) {
2262 hw->fc.current_mode = ixgbe_fc_rx_pause;
2263 hw_dbg(hw, "Flow Control = RX PAUSE frames only.\n");
2265 hw->fc.current_mode = ixgbe_fc_none;
2266 hw_dbg(hw, "Flow Control = NONE.\n");
2272 * ixgbe_fc_autoneg_fiber - Enable flow control on 1 gig fiber
2273 * @hw: pointer to hardware structure
2275 * Enable flow control according on 1 gig fiber.
2277 static s32 ixgbe_fc_autoneg_fiber(struct ixgbe_hw *hw)
2279 u32 pcs_anadv_reg, pcs_lpab_reg, linkstat;
2280 s32 ret_val = IXGBE_ERR_FC_NOT_NEGOTIATED;
2283 * On multispeed fiber at 1g, bail out if
2284 * - link is up but AN did not complete, or if
2285 * - link is up and AN completed but timed out
2288 linkstat = IXGBE_READ_REG(hw, IXGBE_PCS1GLSTA);
2289 if ((!!(linkstat & IXGBE_PCS1GLSTA_AN_COMPLETE) == 0) ||
2290 (!!(linkstat & IXGBE_PCS1GLSTA_AN_TIMED_OUT) == 1))
2293 pcs_anadv_reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANA);
2294 pcs_lpab_reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANLP);
2296 ret_val = ixgbe_negotiate_fc(hw, pcs_anadv_reg,
2297 pcs_lpab_reg, IXGBE_PCS1GANA_SYM_PAUSE,
2298 IXGBE_PCS1GANA_ASM_PAUSE,
2299 IXGBE_PCS1GANA_SYM_PAUSE,
2300 IXGBE_PCS1GANA_ASM_PAUSE);
2307 * ixgbe_fc_autoneg_backplane - Enable flow control IEEE clause 37
2308 * @hw: pointer to hardware structure
2310 * Enable flow control according to IEEE clause 37.
2312 static s32 ixgbe_fc_autoneg_backplane(struct ixgbe_hw *hw)
2314 u32 links2, anlp1_reg, autoc_reg, links;
2315 s32 ret_val = IXGBE_ERR_FC_NOT_NEGOTIATED;
2318 * On backplane, bail out if
2319 * - backplane autoneg was not completed, or if
2320 * - we are 82599 and link partner is not AN enabled
2322 links = IXGBE_READ_REG(hw, IXGBE_LINKS);
2323 if ((links & IXGBE_LINKS_KX_AN_COMP) == 0)
2326 if (hw->mac.type == ixgbe_mac_82599EB) {
2327 links2 = IXGBE_READ_REG(hw, IXGBE_LINKS2);
2328 if ((links2 & IXGBE_LINKS2_AN_SUPPORTED) == 0)
2332 * Read the 10g AN autoc and LP ability registers and resolve
2333 * local flow control settings accordingly
2335 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
2336 anlp1_reg = IXGBE_READ_REG(hw, IXGBE_ANLP1);
2338 ret_val = ixgbe_negotiate_fc(hw, autoc_reg,
2339 anlp1_reg, IXGBE_AUTOC_SYM_PAUSE, IXGBE_AUTOC_ASM_PAUSE,
2340 IXGBE_ANLP1_SYM_PAUSE, IXGBE_ANLP1_ASM_PAUSE);
2347 * ixgbe_fc_autoneg_copper - Enable flow control IEEE clause 37
2348 * @hw: pointer to hardware structure
2350 * Enable flow control according to IEEE clause 37.
2352 static s32 ixgbe_fc_autoneg_copper(struct ixgbe_hw *hw)
2354 u16 technology_ability_reg = 0;
2355 u16 lp_technology_ability_reg = 0;
2357 hw->phy.ops.read_reg(hw, MDIO_AN_ADVERTISE,
2359 &technology_ability_reg);
2360 hw->phy.ops.read_reg(hw, MDIO_AN_LPA,
2362 &lp_technology_ability_reg);
2364 return ixgbe_negotiate_fc(hw, (u32)technology_ability_reg,
2365 (u32)lp_technology_ability_reg,
2366 IXGBE_TAF_SYM_PAUSE, IXGBE_TAF_ASM_PAUSE,
2367 IXGBE_TAF_SYM_PAUSE, IXGBE_TAF_ASM_PAUSE);
2371 * ixgbe_fc_autoneg - Configure flow control
2372 * @hw: pointer to hardware structure
2374 * Compares our advertised flow control capabilities to those advertised by
2375 * our link partner, and determines the proper flow control mode to use.
2377 void ixgbe_fc_autoneg(struct ixgbe_hw *hw)
2379 s32 ret_val = IXGBE_ERR_FC_NOT_NEGOTIATED;
2380 ixgbe_link_speed speed;
2384 * AN should have completed when the cable was plugged in.
2385 * Look for reasons to bail out. Bail out if:
2386 * - FC autoneg is disabled, or if
2389 * Since we're being called from an LSC, link is already known to be up.
2390 * So use link_up_wait_to_complete=false.
2392 if (hw->fc.disable_fc_autoneg)
2395 hw->mac.ops.check_link(hw, &speed, &link_up, false);
2399 switch (hw->phy.media_type) {
2400 /* Autoneg flow control on fiber adapters */
2401 case ixgbe_media_type_fiber_fixed:
2402 case ixgbe_media_type_fiber:
2403 if (speed == IXGBE_LINK_SPEED_1GB_FULL)
2404 ret_val = ixgbe_fc_autoneg_fiber(hw);
2407 /* Autoneg flow control on backplane adapters */
2408 case ixgbe_media_type_backplane:
2409 ret_val = ixgbe_fc_autoneg_backplane(hw);
2412 /* Autoneg flow control on copper adapters */
2413 case ixgbe_media_type_copper:
2414 if (ixgbe_device_supports_autoneg_fc(hw))
2415 ret_val = ixgbe_fc_autoneg_copper(hw);
2424 hw->fc.fc_was_autonegged = true;
2426 hw->fc.fc_was_autonegged = false;
2427 hw->fc.current_mode = hw->fc.requested_mode;
2432 * ixgbe_pcie_timeout_poll - Return number of times to poll for completion
2433 * @hw: pointer to hardware structure
2435 * System-wide timeout range is encoded in PCIe Device Control2 register.
2437 * Add 10% to specified maximum and return the number of times to poll for
2438 * completion timeout, in units of 100 microsec. Never return less than
2439 * 800 = 80 millisec.
2441 static u32 ixgbe_pcie_timeout_poll(struct ixgbe_hw *hw)
2443 struct ixgbe_adapter *adapter = hw->back;
2447 pci_read_config_word(adapter->pdev, IXGBE_PCI_DEVICE_CONTROL2,
2449 devctl2 &= IXGBE_PCIDEVCTRL2_TIMEO_MASK;
2452 case IXGBE_PCIDEVCTRL2_65_130ms:
2453 pollcnt = 1300; /* 130 millisec */
2455 case IXGBE_PCIDEVCTRL2_260_520ms:
2456 pollcnt = 5200; /* 520 millisec */
2458 case IXGBE_PCIDEVCTRL2_1_2s:
2459 pollcnt = 20000; /* 2 sec */
2461 case IXGBE_PCIDEVCTRL2_4_8s:
2462 pollcnt = 80000; /* 8 sec */
2464 case IXGBE_PCIDEVCTRL2_17_34s:
2465 pollcnt = 34000; /* 34 sec */
2467 case IXGBE_PCIDEVCTRL2_50_100us: /* 100 microsecs */
2468 case IXGBE_PCIDEVCTRL2_1_2ms: /* 2 millisecs */
2469 case IXGBE_PCIDEVCTRL2_16_32ms: /* 32 millisec */
2470 case IXGBE_PCIDEVCTRL2_16_32ms_def: /* 32 millisec default */
2472 pollcnt = 800; /* 80 millisec minimum */
2476 /* add 10% to spec maximum */
2477 return (pollcnt * 11) / 10;
2481 * ixgbe_disable_pcie_master - Disable PCI-express master access
2482 * @hw: pointer to hardware structure
2484 * Disables PCI-Express master access and verifies there are no pending
2485 * requests. IXGBE_ERR_MASTER_REQUESTS_PENDING is returned if master disable
2486 * bit hasn't caused the master requests to be disabled, else 0
2487 * is returned signifying master requests disabled.
2489 static s32 ixgbe_disable_pcie_master(struct ixgbe_hw *hw)
2495 /* Always set this bit to ensure any future transactions are blocked */
2496 IXGBE_WRITE_REG(hw, IXGBE_CTRL, IXGBE_CTRL_GIO_DIS);
2498 /* Exit if master requests are blocked */
2499 if (!(IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_GIO) ||
2500 ixgbe_removed(hw->hw_addr))
2503 /* Poll for master request bit to clear */
2504 for (i = 0; i < IXGBE_PCI_MASTER_DISABLE_TIMEOUT; i++) {
2506 if (!(IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_GIO))
2511 * Two consecutive resets are required via CTRL.RST per datasheet
2512 * 5.2.5.3.2 Master Disable. We set a flag to inform the reset routine
2513 * of this need. The first reset prevents new master requests from
2514 * being issued by our device. We then must wait 1usec or more for any
2515 * remaining completions from the PCIe bus to trickle in, and then reset
2516 * again to clear out any effects they may have had on our device.
2518 hw_dbg(hw, "GIO Master Disable bit didn't clear - requesting resets\n");
2519 hw->mac.flags |= IXGBE_FLAGS_DOUBLE_RESET_REQUIRED;
2522 * Before proceeding, make sure that the PCIe block does not have
2523 * transactions pending.
2525 poll = ixgbe_pcie_timeout_poll(hw);
2526 for (i = 0; i < poll; i++) {
2528 value = ixgbe_read_pci_cfg_word(hw, IXGBE_PCI_DEVICE_STATUS);
2529 if (ixgbe_removed(hw->hw_addr))
2531 if (!(value & IXGBE_PCI_DEVICE_STATUS_TRANSACTION_PENDING))
2535 hw_dbg(hw, "PCIe transaction pending bit also did not clear.\n");
2536 status = IXGBE_ERR_MASTER_REQUESTS_PENDING;
2543 * ixgbe_acquire_swfw_sync - Acquire SWFW semaphore
2544 * @hw: pointer to hardware structure
2545 * @mask: Mask to specify which semaphore to acquire
2547 * Acquires the SWFW semaphore through the GSSR register for the specified
2548 * function (CSR, PHY0, PHY1, EEPROM, Flash)
2550 s32 ixgbe_acquire_swfw_sync(struct ixgbe_hw *hw, u16 mask)
2554 u32 fwmask = mask << 5;
2558 for (i = 0; i < timeout; i++) {
2560 * SW NVM semaphore bit is used for access to all
2561 * SW_FW_SYNC bits (not just NVM)
2563 if (ixgbe_get_eeprom_semaphore(hw))
2564 return IXGBE_ERR_SWFW_SYNC;
2566 gssr = IXGBE_READ_REG(hw, IXGBE_GSSR);
2567 if (!(gssr & (fwmask | swmask))) {
2569 IXGBE_WRITE_REG(hw, IXGBE_GSSR, gssr);
2570 ixgbe_release_eeprom_semaphore(hw);
2573 /* Resource is currently in use by FW or SW */
2574 ixgbe_release_eeprom_semaphore(hw);
2575 usleep_range(5000, 10000);
2579 /* If time expired clear the bits holding the lock and retry */
2580 if (gssr & (fwmask | swmask))
2581 ixgbe_release_swfw_sync(hw, gssr & (fwmask | swmask));
2583 usleep_range(5000, 10000);
2584 return IXGBE_ERR_SWFW_SYNC;
2588 * ixgbe_release_swfw_sync - Release SWFW semaphore
2589 * @hw: pointer to hardware structure
2590 * @mask: Mask to specify which semaphore to release
2592 * Releases the SWFW semaphore through the GSSR register for the specified
2593 * function (CSR, PHY0, PHY1, EEPROM, Flash)
2595 void ixgbe_release_swfw_sync(struct ixgbe_hw *hw, u16 mask)
2600 ixgbe_get_eeprom_semaphore(hw);
2602 gssr = IXGBE_READ_REG(hw, IXGBE_GSSR);
2604 IXGBE_WRITE_REG(hw, IXGBE_GSSR, gssr);
2606 ixgbe_release_eeprom_semaphore(hw);
2610 * prot_autoc_read_generic - Hides MAC differences needed for AUTOC read
2611 * @hw: pointer to hardware structure
2612 * @reg_val: Value we read from AUTOC
2613 * @locked: bool to indicate whether the SW/FW lock should be taken. Never
2614 * true in this the generic case.
2616 * The default case requires no protection so just to the register read.
2618 s32 prot_autoc_read_generic(struct ixgbe_hw *hw, bool *locked, u32 *reg_val)
2621 *reg_val = IXGBE_READ_REG(hw, IXGBE_AUTOC);
2626 * prot_autoc_write_generic - Hides MAC differences needed for AUTOC write
2627 * @hw: pointer to hardware structure
2628 * @reg_val: value to write to AUTOC
2629 * @locked: bool to indicate whether the SW/FW lock was already taken by
2632 s32 prot_autoc_write_generic(struct ixgbe_hw *hw, u32 reg_val, bool locked)
2634 IXGBE_WRITE_REG(hw, IXGBE_AUTOC, reg_val);
2639 * ixgbe_disable_rx_buff_generic - Stops the receive data path
2640 * @hw: pointer to hardware structure
2642 * Stops the receive data path and waits for the HW to internally
2643 * empty the Rx security block.
2645 s32 ixgbe_disable_rx_buff_generic(struct ixgbe_hw *hw)
2647 #define IXGBE_MAX_SECRX_POLL 40
2651 secrxreg = IXGBE_READ_REG(hw, IXGBE_SECRXCTRL);
2652 secrxreg |= IXGBE_SECRXCTRL_RX_DIS;
2653 IXGBE_WRITE_REG(hw, IXGBE_SECRXCTRL, secrxreg);
2654 for (i = 0; i < IXGBE_MAX_SECRX_POLL; i++) {
2655 secrxreg = IXGBE_READ_REG(hw, IXGBE_SECRXSTAT);
2656 if (secrxreg & IXGBE_SECRXSTAT_SECRX_RDY)
2659 /* Use interrupt-safe sleep just in case */
2663 /* For informational purposes only */
2664 if (i >= IXGBE_MAX_SECRX_POLL)
2665 hw_dbg(hw, "Rx unit being enabled before security "
2666 "path fully disabled. Continuing with init.\n");
2673 * ixgbe_enable_rx_buff - Enables the receive data path
2674 * @hw: pointer to hardware structure
2676 * Enables the receive data path
2678 s32 ixgbe_enable_rx_buff_generic(struct ixgbe_hw *hw)
2682 secrxreg = IXGBE_READ_REG(hw, IXGBE_SECRXCTRL);
2683 secrxreg &= ~IXGBE_SECRXCTRL_RX_DIS;
2684 IXGBE_WRITE_REG(hw, IXGBE_SECRXCTRL, secrxreg);
2685 IXGBE_WRITE_FLUSH(hw);
2691 * ixgbe_enable_rx_dma_generic - Enable the Rx DMA unit
2692 * @hw: pointer to hardware structure
2693 * @regval: register value to write to RXCTRL
2695 * Enables the Rx DMA unit
2697 s32 ixgbe_enable_rx_dma_generic(struct ixgbe_hw *hw, u32 regval)
2699 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, regval);
2705 * ixgbe_blink_led_start_generic - Blink LED based on index.
2706 * @hw: pointer to hardware structure
2707 * @index: led number to blink
2709 s32 ixgbe_blink_led_start_generic(struct ixgbe_hw *hw, u32 index)
2711 ixgbe_link_speed speed = 0;
2712 bool link_up = false;
2713 u32 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
2714 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
2716 bool locked = false;
2719 * Link must be up to auto-blink the LEDs;
2720 * Force it if link is down.
2722 hw->mac.ops.check_link(hw, &speed, &link_up, false);
2725 ret_val = hw->mac.ops.prot_autoc_read(hw, &locked, &autoc_reg);
2729 autoc_reg |= IXGBE_AUTOC_AN_RESTART;
2730 autoc_reg |= IXGBE_AUTOC_FLU;
2732 ret_val = hw->mac.ops.prot_autoc_write(hw, autoc_reg, locked);
2736 IXGBE_WRITE_FLUSH(hw);
2738 usleep_range(10000, 20000);
2741 led_reg &= ~IXGBE_LED_MODE_MASK(index);
2742 led_reg |= IXGBE_LED_BLINK(index);
2743 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
2744 IXGBE_WRITE_FLUSH(hw);
2751 * ixgbe_blink_led_stop_generic - Stop blinking LED based on index.
2752 * @hw: pointer to hardware structure
2753 * @index: led number to stop blinking
2755 s32 ixgbe_blink_led_stop_generic(struct ixgbe_hw *hw, u32 index)
2758 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
2760 bool locked = false;
2762 ret_val = hw->mac.ops.prot_autoc_read(hw, &locked, &autoc_reg);
2766 autoc_reg &= ~IXGBE_AUTOC_FLU;
2767 autoc_reg |= IXGBE_AUTOC_AN_RESTART;
2769 ret_val = hw->mac.ops.prot_autoc_write(hw, autoc_reg, locked);
2773 led_reg &= ~IXGBE_LED_MODE_MASK(index);
2774 led_reg &= ~IXGBE_LED_BLINK(index);
2775 led_reg |= IXGBE_LED_LINK_ACTIVE << IXGBE_LED_MODE_SHIFT(index);
2776 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
2777 IXGBE_WRITE_FLUSH(hw);
2784 * ixgbe_get_san_mac_addr_offset - Get SAN MAC address offset from the EEPROM
2785 * @hw: pointer to hardware structure
2786 * @san_mac_offset: SAN MAC address offset
2788 * This function will read the EEPROM location for the SAN MAC address
2789 * pointer, and returns the value at that location. This is used in both
2790 * get and set mac_addr routines.
2792 static s32 ixgbe_get_san_mac_addr_offset(struct ixgbe_hw *hw,
2793 u16 *san_mac_offset)
2798 * First read the EEPROM pointer to see if the MAC addresses are
2801 ret_val = hw->eeprom.ops.read(hw, IXGBE_SAN_MAC_ADDR_PTR,
2804 hw_err(hw, "eeprom read at offset %d failed\n",
2805 IXGBE_SAN_MAC_ADDR_PTR);
2811 * ixgbe_get_san_mac_addr_generic - SAN MAC address retrieval from the EEPROM
2812 * @hw: pointer to hardware structure
2813 * @san_mac_addr: SAN MAC address
2815 * Reads the SAN MAC address from the EEPROM, if it's available. This is
2816 * per-port, so set_lan_id() must be called before reading the addresses.
2817 * set_lan_id() is called by identify_sfp(), but this cannot be relied
2818 * upon for non-SFP connections, so we must call it here.
2820 s32 ixgbe_get_san_mac_addr_generic(struct ixgbe_hw *hw, u8 *san_mac_addr)
2822 u16 san_mac_data, san_mac_offset;
2827 * First read the EEPROM pointer to see if the MAC addresses are
2828 * available. If they're not, no point in calling set_lan_id() here.
2830 ret_val = ixgbe_get_san_mac_addr_offset(hw, &san_mac_offset);
2831 if (ret_val || san_mac_offset == 0 || san_mac_offset == 0xFFFF)
2833 goto san_mac_addr_clr;
2835 /* make sure we know which port we need to program */
2836 hw->mac.ops.set_lan_id(hw);
2837 /* apply the port offset to the address offset */
2838 (hw->bus.func) ? (san_mac_offset += IXGBE_SAN_MAC_ADDR_PORT1_OFFSET) :
2839 (san_mac_offset += IXGBE_SAN_MAC_ADDR_PORT0_OFFSET);
2840 for (i = 0; i < 3; i++) {
2841 ret_val = hw->eeprom.ops.read(hw, san_mac_offset,
2844 hw_err(hw, "eeprom read at offset %d failed\n",
2846 goto san_mac_addr_clr;
2848 san_mac_addr[i * 2] = (u8)(san_mac_data);
2849 san_mac_addr[i * 2 + 1] = (u8)(san_mac_data >> 8);
2855 /* No addresses available in this EEPROM. It's not necessarily an
2856 * error though, so just wipe the local address and return.
2858 for (i = 0; i < 6; i++)
2859 san_mac_addr[i] = 0xFF;
2864 * ixgbe_get_pcie_msix_count_generic - Gets MSI-X vector count
2865 * @hw: pointer to hardware structure
2867 * Read PCIe configuration space, and get the MSI-X vector count from
2868 * the capabilities table.
2870 u16 ixgbe_get_pcie_msix_count_generic(struct ixgbe_hw *hw)
2876 switch (hw->mac.type) {
2877 case ixgbe_mac_82598EB:
2878 pcie_offset = IXGBE_PCIE_MSIX_82598_CAPS;
2879 max_msix_count = IXGBE_MAX_MSIX_VECTORS_82598;
2881 case ixgbe_mac_82599EB:
2882 case ixgbe_mac_X540:
2883 pcie_offset = IXGBE_PCIE_MSIX_82599_CAPS;
2884 max_msix_count = IXGBE_MAX_MSIX_VECTORS_82599;
2890 msix_count = ixgbe_read_pci_cfg_word(hw, pcie_offset);
2891 if (ixgbe_removed(hw->hw_addr))
2893 msix_count &= IXGBE_PCIE_MSIX_TBL_SZ_MASK;
2895 /* MSI-X count is zero-based in HW */
2898 if (msix_count > max_msix_count)
2899 msix_count = max_msix_count;
2905 * ixgbe_clear_vmdq_generic - Disassociate a VMDq pool index from a rx address
2906 * @hw: pointer to hardware struct
2907 * @rar: receive address register index to disassociate
2908 * @vmdq: VMDq pool index to remove from the rar
2910 s32 ixgbe_clear_vmdq_generic(struct ixgbe_hw *hw, u32 rar, u32 vmdq)
2912 u32 mpsar_lo, mpsar_hi;
2913 u32 rar_entries = hw->mac.num_rar_entries;
2915 /* Make sure we are using a valid rar index range */
2916 if (rar >= rar_entries) {
2917 hw_dbg(hw, "RAR index %d is out of range.\n", rar);
2918 return IXGBE_ERR_INVALID_ARGUMENT;
2921 mpsar_lo = IXGBE_READ_REG(hw, IXGBE_MPSAR_LO(rar));
2922 mpsar_hi = IXGBE_READ_REG(hw, IXGBE_MPSAR_HI(rar));
2924 if (!mpsar_lo && !mpsar_hi)
2927 if (vmdq == IXGBE_CLEAR_VMDQ_ALL) {
2929 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), 0);
2933 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), 0);
2936 } else if (vmdq < 32) {
2937 mpsar_lo &= ~(1 << vmdq);
2938 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), mpsar_lo);
2940 mpsar_hi &= ~(1 << (vmdq - 32));
2941 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), mpsar_hi);
2944 /* was that the last pool using this rar? */
2945 if (mpsar_lo == 0 && mpsar_hi == 0 && rar != 0)
2946 hw->mac.ops.clear_rar(hw, rar);
2952 * ixgbe_set_vmdq_generic - Associate a VMDq pool index with a rx address
2953 * @hw: pointer to hardware struct
2954 * @rar: receive address register index to associate with a VMDq index
2955 * @vmdq: VMDq pool index
2957 s32 ixgbe_set_vmdq_generic(struct ixgbe_hw *hw, u32 rar, u32 vmdq)
2960 u32 rar_entries = hw->mac.num_rar_entries;
2962 /* Make sure we are using a valid rar index range */
2963 if (rar >= rar_entries) {
2964 hw_dbg(hw, "RAR index %d is out of range.\n", rar);
2965 return IXGBE_ERR_INVALID_ARGUMENT;
2969 mpsar = IXGBE_READ_REG(hw, IXGBE_MPSAR_LO(rar));
2971 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), mpsar);
2973 mpsar = IXGBE_READ_REG(hw, IXGBE_MPSAR_HI(rar));
2974 mpsar |= 1 << (vmdq - 32);
2975 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), mpsar);
2981 * This function should only be involved in the IOV mode.
2982 * In IOV mode, Default pool is next pool after the number of
2983 * VFs advertized and not 0.
2984 * MPSAR table needs to be updated for SAN_MAC RAR [hw->mac.san_mac_rar_index]
2986 * ixgbe_set_vmdq_san_mac - Associate default VMDq pool index with a rx address
2987 * @hw: pointer to hardware struct
2988 * @vmdq: VMDq pool index
2990 s32 ixgbe_set_vmdq_san_mac_generic(struct ixgbe_hw *hw, u32 vmdq)
2992 u32 rar = hw->mac.san_mac_rar_index;
2995 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), 1 << vmdq);
2996 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), 0);
2998 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), 0);
2999 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), 1 << (vmdq - 32));
3006 * ixgbe_init_uta_tables_generic - Initialize the Unicast Table Array
3007 * @hw: pointer to hardware structure
3009 s32 ixgbe_init_uta_tables_generic(struct ixgbe_hw *hw)
3013 for (i = 0; i < 128; i++)
3014 IXGBE_WRITE_REG(hw, IXGBE_UTA(i), 0);
3020 * ixgbe_find_vlvf_slot - find the vlanid or the first empty slot
3021 * @hw: pointer to hardware structure
3022 * @vlan: VLAN id to write to VLAN filter
3024 * return the VLVF index where this VLAN id should be placed
3027 static s32 ixgbe_find_vlvf_slot(struct ixgbe_hw *hw, u32 vlan)
3030 u32 first_empty_slot = 0;
3033 /* short cut the special case */
3038 * Search for the vlan id in the VLVF entries. Save off the first empty
3039 * slot found along the way
3041 for (regindex = 1; regindex < IXGBE_VLVF_ENTRIES; regindex++) {
3042 bits = IXGBE_READ_REG(hw, IXGBE_VLVF(regindex));
3043 if (!bits && !(first_empty_slot))
3044 first_empty_slot = regindex;
3045 else if ((bits & 0x0FFF) == vlan)
3050 * If regindex is less than IXGBE_VLVF_ENTRIES, then we found the vlan
3051 * in the VLVF. Else use the first empty VLVF register for this
3054 if (regindex >= IXGBE_VLVF_ENTRIES) {
3055 if (first_empty_slot)
3056 regindex = first_empty_slot;
3058 hw_dbg(hw, "No space in VLVF.\n");
3059 regindex = IXGBE_ERR_NO_SPACE;
3067 * ixgbe_set_vfta_generic - Set VLAN filter table
3068 * @hw: pointer to hardware structure
3069 * @vlan: VLAN id to write to VLAN filter
3070 * @vind: VMDq output index that maps queue to VLAN id in VFVFB
3071 * @vlan_on: boolean flag to turn on/off VLAN in VFVF
3073 * Turn on/off specified VLAN in the VLAN filter table.
3075 s32 ixgbe_set_vfta_generic(struct ixgbe_hw *hw, u32 vlan, u32 vind,
3084 bool vfta_changed = false;
3087 return IXGBE_ERR_PARAM;
3090 * this is a 2 part operation - first the VFTA, then the
3091 * VLVF and VLVFB if VT Mode is set
3092 * We don't write the VFTA until we know the VLVF part succeeded.
3096 * The VFTA is a bitstring made up of 128 32-bit registers
3097 * that enable the particular VLAN id, much like the MTA:
3098 * bits[11-5]: which register
3099 * bits[4-0]: which bit in the register
3101 regindex = (vlan >> 5) & 0x7F;
3102 bitindex = vlan & 0x1F;
3103 targetbit = (1 << bitindex);
3104 vfta = IXGBE_READ_REG(hw, IXGBE_VFTA(regindex));
3107 if (!(vfta & targetbit)) {
3109 vfta_changed = true;
3112 if ((vfta & targetbit)) {
3114 vfta_changed = true;
3121 * make sure the vlan is in VLVF
3122 * set the vind bit in the matching VLVFB
3124 * clear the pool bit and possibly the vind
3126 vt = IXGBE_READ_REG(hw, IXGBE_VT_CTL);
3127 if (vt & IXGBE_VT_CTL_VT_ENABLE) {
3130 vlvf_index = ixgbe_find_vlvf_slot(hw, vlan);
3135 /* set the pool bit */
3137 bits = IXGBE_READ_REG(hw,
3138 IXGBE_VLVFB(vlvf_index*2));
3139 bits |= (1 << vind);
3141 IXGBE_VLVFB(vlvf_index*2),
3144 bits = IXGBE_READ_REG(hw,
3145 IXGBE_VLVFB((vlvf_index*2)+1));
3146 bits |= (1 << (vind-32));
3148 IXGBE_VLVFB((vlvf_index*2)+1),
3152 /* clear the pool bit */
3154 bits = IXGBE_READ_REG(hw,
3155 IXGBE_VLVFB(vlvf_index*2));
3156 bits &= ~(1 << vind);
3158 IXGBE_VLVFB(vlvf_index*2),
3160 bits |= IXGBE_READ_REG(hw,
3161 IXGBE_VLVFB((vlvf_index*2)+1));
3163 bits = IXGBE_READ_REG(hw,
3164 IXGBE_VLVFB((vlvf_index*2)+1));
3165 bits &= ~(1 << (vind-32));
3167 IXGBE_VLVFB((vlvf_index*2)+1),
3169 bits |= IXGBE_READ_REG(hw,
3170 IXGBE_VLVFB(vlvf_index*2));
3175 * If there are still bits set in the VLVFB registers
3176 * for the VLAN ID indicated we need to see if the
3177 * caller is requesting that we clear the VFTA entry bit.
3178 * If the caller has requested that we clear the VFTA
3179 * entry bit but there are still pools/VFs using this VLAN
3180 * ID entry then ignore the request. We're not worried
3181 * about the case where we're turning the VFTA VLAN ID
3182 * entry bit on, only when requested to turn it off as
3183 * there may be multiple pools and/or VFs using the
3184 * VLAN ID entry. In that case we cannot clear the
3185 * VFTA bit until all pools/VFs using that VLAN ID have also
3186 * been cleared. This will be indicated by "bits" being
3190 IXGBE_WRITE_REG(hw, IXGBE_VLVF(vlvf_index),
3191 (IXGBE_VLVF_VIEN | vlan));
3193 /* someone wants to clear the vfta entry
3194 * but some pools/VFs are still using it.
3196 vfta_changed = false;
3200 IXGBE_WRITE_REG(hw, IXGBE_VLVF(vlvf_index), 0);
3204 IXGBE_WRITE_REG(hw, IXGBE_VFTA(regindex), vfta);
3210 * ixgbe_clear_vfta_generic - Clear VLAN filter table
3211 * @hw: pointer to hardware structure
3213 * Clears the VLAN filer table, and the VMDq index associated with the filter
3215 s32 ixgbe_clear_vfta_generic(struct ixgbe_hw *hw)
3219 for (offset = 0; offset < hw->mac.vft_size; offset++)
3220 IXGBE_WRITE_REG(hw, IXGBE_VFTA(offset), 0);
3222 for (offset = 0; offset < IXGBE_VLVF_ENTRIES; offset++) {
3223 IXGBE_WRITE_REG(hw, IXGBE_VLVF(offset), 0);
3224 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(offset*2), 0);
3225 IXGBE_WRITE_REG(hw, IXGBE_VLVFB((offset*2)+1), 0);
3232 * ixgbe_check_mac_link_generic - Determine link and speed status
3233 * @hw: pointer to hardware structure
3234 * @speed: pointer to link speed
3235 * @link_up: true when link is up
3236 * @link_up_wait_to_complete: bool used to wait for link up or not
3238 * Reads the links register to determine if link is up and the current speed
3240 s32 ixgbe_check_mac_link_generic(struct ixgbe_hw *hw, ixgbe_link_speed *speed,
3241 bool *link_up, bool link_up_wait_to_complete)
3243 u32 links_reg, links_orig;
3246 /* clear the old state */
3247 links_orig = IXGBE_READ_REG(hw, IXGBE_LINKS);
3249 links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
3251 if (links_orig != links_reg) {
3252 hw_dbg(hw, "LINKS changed from %08X to %08X\n",
3253 links_orig, links_reg);
3256 if (link_up_wait_to_complete) {
3257 for (i = 0; i < IXGBE_LINK_UP_TIME; i++) {
3258 if (links_reg & IXGBE_LINKS_UP) {
3265 links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
3268 if (links_reg & IXGBE_LINKS_UP)
3274 if ((links_reg & IXGBE_LINKS_SPEED_82599) ==
3275 IXGBE_LINKS_SPEED_10G_82599)
3276 *speed = IXGBE_LINK_SPEED_10GB_FULL;
3277 else if ((links_reg & IXGBE_LINKS_SPEED_82599) ==
3278 IXGBE_LINKS_SPEED_1G_82599)
3279 *speed = IXGBE_LINK_SPEED_1GB_FULL;
3280 else if ((links_reg & IXGBE_LINKS_SPEED_82599) ==
3281 IXGBE_LINKS_SPEED_100_82599)
3282 *speed = IXGBE_LINK_SPEED_100_FULL;
3284 *speed = IXGBE_LINK_SPEED_UNKNOWN;
3290 * ixgbe_get_wwn_prefix_generic - Get alternative WWNN/WWPN prefix from
3292 * @hw: pointer to hardware structure
3293 * @wwnn_prefix: the alternative WWNN prefix
3294 * @wwpn_prefix: the alternative WWPN prefix
3296 * This function will read the EEPROM from the alternative SAN MAC address
3297 * block to check the support for the alternative WWNN/WWPN prefix support.
3299 s32 ixgbe_get_wwn_prefix_generic(struct ixgbe_hw *hw, u16 *wwnn_prefix,
3303 u16 alt_san_mac_blk_offset;
3305 /* clear output first */
3306 *wwnn_prefix = 0xFFFF;
3307 *wwpn_prefix = 0xFFFF;
3309 /* check if alternative SAN MAC is supported */
3310 offset = IXGBE_ALT_SAN_MAC_ADDR_BLK_PTR;
3311 if (hw->eeprom.ops.read(hw, offset, &alt_san_mac_blk_offset))
3312 goto wwn_prefix_err;
3314 if ((alt_san_mac_blk_offset == 0) ||
3315 (alt_san_mac_blk_offset == 0xFFFF))
3316 goto wwn_prefix_out;
3318 /* check capability in alternative san mac address block */
3319 offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_CAPS_OFFSET;
3320 if (hw->eeprom.ops.read(hw, offset, &caps))
3321 goto wwn_prefix_err;
3322 if (!(caps & IXGBE_ALT_SAN_MAC_ADDR_CAPS_ALTWWN))
3323 goto wwn_prefix_out;
3325 /* get the corresponding prefix for WWNN/WWPN */
3326 offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_WWNN_OFFSET;
3327 if (hw->eeprom.ops.read(hw, offset, wwnn_prefix))
3328 hw_err(hw, "eeprom read at offset %d failed\n", offset);
3330 offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_WWPN_OFFSET;
3331 if (hw->eeprom.ops.read(hw, offset, wwpn_prefix))
3332 goto wwn_prefix_err;
3338 hw_err(hw, "eeprom read at offset %d failed\n", offset);
3343 * ixgbe_set_mac_anti_spoofing - Enable/Disable MAC anti-spoofing
3344 * @hw: pointer to hardware structure
3345 * @enable: enable or disable switch for anti-spoofing
3346 * @pf: Physical Function pool - do not enable anti-spoofing for the PF
3349 void ixgbe_set_mac_anti_spoofing(struct ixgbe_hw *hw, bool enable, int pf)
3352 int pf_target_reg = pf >> 3;
3353 int pf_target_shift = pf % 8;
3356 if (hw->mac.type == ixgbe_mac_82598EB)
3360 pfvfspoof = IXGBE_SPOOF_MACAS_MASK;
3363 * PFVFSPOOF register array is size 8 with 8 bits assigned to
3364 * MAC anti-spoof enables in each register array element.
3366 for (j = 0; j < pf_target_reg; j++)
3367 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(j), pfvfspoof);
3370 * The PF should be allowed to spoof so that it can support
3371 * emulation mode NICs. Do not set the bits assigned to the PF
3373 pfvfspoof &= (1 << pf_target_shift) - 1;
3374 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(j), pfvfspoof);
3377 * Remaining pools belong to the PF so they do not need to have
3378 * anti-spoofing enabled.
3380 for (j++; j < IXGBE_PFVFSPOOF_REG_COUNT; j++)
3381 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(j), 0);
3385 * ixgbe_set_vlan_anti_spoofing - Enable/Disable VLAN anti-spoofing
3386 * @hw: pointer to hardware structure
3387 * @enable: enable or disable switch for VLAN anti-spoofing
3388 * @pf: Virtual Function pool - VF Pool to set for VLAN anti-spoofing
3391 void ixgbe_set_vlan_anti_spoofing(struct ixgbe_hw *hw, bool enable, int vf)
3393 int vf_target_reg = vf >> 3;
3394 int vf_target_shift = vf % 8 + IXGBE_SPOOF_VLANAS_SHIFT;
3397 if (hw->mac.type == ixgbe_mac_82598EB)
3400 pfvfspoof = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg));
3402 pfvfspoof |= (1 << vf_target_shift);
3404 pfvfspoof &= ~(1 << vf_target_shift);
3405 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), pfvfspoof);
3409 * ixgbe_get_device_caps_generic - Get additional device capabilities
3410 * @hw: pointer to hardware structure
3411 * @device_caps: the EEPROM word with the extra device capabilities
3413 * This function will read the EEPROM location for the device capabilities,
3414 * and return the word through device_caps.
3416 s32 ixgbe_get_device_caps_generic(struct ixgbe_hw *hw, u16 *device_caps)
3418 hw->eeprom.ops.read(hw, IXGBE_DEVICE_CAPS, device_caps);
3424 * ixgbe_set_rxpba_generic - Initialize RX packet buffer
3425 * @hw: pointer to hardware structure
3426 * @num_pb: number of packet buffers to allocate
3427 * @headroom: reserve n KB of headroom
3428 * @strategy: packet buffer allocation strategy
3430 void ixgbe_set_rxpba_generic(struct ixgbe_hw *hw,
3435 u32 pbsize = hw->mac.rx_pb_size;
3437 u32 rxpktsize, txpktsize, txpbthresh;
3439 /* Reserve headroom */
3445 /* Divide remaining packet buffer space amongst the number
3446 * of packet buffers requested using supplied strategy.
3449 case (PBA_STRATEGY_WEIGHTED):
3450 /* pba_80_48 strategy weight first half of packet buffer with
3451 * 5/8 of the packet buffer space.
3453 rxpktsize = ((pbsize * 5 * 2) / (num_pb * 8));
3454 pbsize -= rxpktsize * (num_pb / 2);
3455 rxpktsize <<= IXGBE_RXPBSIZE_SHIFT;
3456 for (; i < (num_pb / 2); i++)
3457 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpktsize);
3458 /* Fall through to configure remaining packet buffers */
3459 case (PBA_STRATEGY_EQUAL):
3460 /* Divide the remaining Rx packet buffer evenly among the TCs */
3461 rxpktsize = (pbsize / (num_pb - i)) << IXGBE_RXPBSIZE_SHIFT;
3462 for (; i < num_pb; i++)
3463 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpktsize);
3470 * Setup Tx packet buffer and threshold equally for all TCs
3471 * TXPBTHRESH register is set in K so divide by 1024 and subtract
3472 * 10 since the largest packet we support is just over 9K.
3474 txpktsize = IXGBE_TXPBSIZE_MAX / num_pb;
3475 txpbthresh = (txpktsize / 1024) - IXGBE_TXPKT_SIZE_MAX;
3476 for (i = 0; i < num_pb; i++) {
3477 IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), txpktsize);
3478 IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), txpbthresh);
3481 /* Clear unused TCs, if any, to zero buffer size*/
3482 for (; i < IXGBE_MAX_PB; i++) {
3483 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), 0);
3484 IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), 0);
3485 IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), 0);
3490 * ixgbe_calculate_checksum - Calculate checksum for buffer
3491 * @buffer: pointer to EEPROM
3492 * @length: size of EEPROM to calculate a checksum for
3494 * Calculates the checksum for some buffer on a specified length. The
3495 * checksum calculated is returned.
3497 static u8 ixgbe_calculate_checksum(u8 *buffer, u32 length)
3505 for (i = 0; i < length; i++)
3508 return (u8) (0 - sum);
3512 * ixgbe_host_interface_command - Issue command to manageability block
3513 * @hw: pointer to the HW structure
3514 * @buffer: contains the command to write and where the return status will
3516 * @length: length of buffer, must be multiple of 4 bytes
3518 * Communicates with the manageability block. On success return 0
3519 * else return IXGBE_ERR_HOST_INTERFACE_COMMAND.
3521 static s32 ixgbe_host_interface_command(struct ixgbe_hw *hw, u32 *buffer,
3525 u32 hdr_size = sizeof(struct ixgbe_hic_hdr);
3526 u8 buf_len, dword_len;
3530 if (length == 0 || length & 0x3 ||
3531 length > IXGBE_HI_MAX_BLOCK_BYTE_LENGTH) {
3532 hw_dbg(hw, "Buffer length failure.\n");
3533 ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND;
3537 /* Check that the host interface is enabled. */
3538 hicr = IXGBE_READ_REG(hw, IXGBE_HICR);
3539 if ((hicr & IXGBE_HICR_EN) == 0) {
3540 hw_dbg(hw, "IXGBE_HOST_EN bit disabled.\n");
3541 ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND;
3545 /* Calculate length in DWORDs */
3546 dword_len = length >> 2;
3549 * The device driver writes the relevant command block
3550 * into the ram area.
3552 for (i = 0; i < dword_len; i++)
3553 IXGBE_WRITE_REG_ARRAY(hw, IXGBE_FLEX_MNG,
3554 i, cpu_to_le32(buffer[i]));
3556 /* Setting this bit tells the ARC that a new command is pending. */
3557 IXGBE_WRITE_REG(hw, IXGBE_HICR, hicr | IXGBE_HICR_C);
3559 for (i = 0; i < IXGBE_HI_COMMAND_TIMEOUT; i++) {
3560 hicr = IXGBE_READ_REG(hw, IXGBE_HICR);
3561 if (!(hicr & IXGBE_HICR_C))
3563 usleep_range(1000, 2000);
3566 /* Check command successful completion. */
3567 if (i == IXGBE_HI_COMMAND_TIMEOUT ||
3568 (!(IXGBE_READ_REG(hw, IXGBE_HICR) & IXGBE_HICR_SV))) {
3569 hw_dbg(hw, "Command has failed with no status valid.\n");
3570 ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND;
3574 /* Calculate length in DWORDs */
3575 dword_len = hdr_size >> 2;
3577 /* first pull in the header so we know the buffer length */
3578 for (bi = 0; bi < dword_len; bi++) {
3579 buffer[bi] = IXGBE_READ_REG_ARRAY(hw, IXGBE_FLEX_MNG, bi);
3580 le32_to_cpus(&buffer[bi]);
3583 /* If there is any thing in data position pull it in */
3584 buf_len = ((struct ixgbe_hic_hdr *)buffer)->buf_len;
3588 if (length < (buf_len + hdr_size)) {
3589 hw_dbg(hw, "Buffer not large enough for reply message.\n");
3590 ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND;
3594 /* Calculate length in DWORDs, add 3 for odd lengths */
3595 dword_len = (buf_len + 3) >> 2;
3597 /* Pull in the rest of the buffer (bi is where we left off)*/
3598 for (; bi <= dword_len; bi++) {
3599 buffer[bi] = IXGBE_READ_REG_ARRAY(hw, IXGBE_FLEX_MNG, bi);
3600 le32_to_cpus(&buffer[bi]);
3608 * ixgbe_set_fw_drv_ver_generic - Sends driver version to firmware
3609 * @hw: pointer to the HW structure
3610 * @maj: driver version major number
3611 * @min: driver version minor number
3612 * @build: driver version build number
3613 * @sub: driver version sub build number
3615 * Sends driver version number to firmware through the manageability
3616 * block. On success return 0
3617 * else returns IXGBE_ERR_SWFW_SYNC when encountering an error acquiring
3618 * semaphore or IXGBE_ERR_HOST_INTERFACE_COMMAND when command fails.
3620 s32 ixgbe_set_fw_drv_ver_generic(struct ixgbe_hw *hw, u8 maj, u8 min,
3623 struct ixgbe_hic_drv_info fw_cmd;
3627 if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_SW_MNG_SM) != 0) {
3628 ret_val = IXGBE_ERR_SWFW_SYNC;
3632 fw_cmd.hdr.cmd = FW_CEM_CMD_DRIVER_INFO;
3633 fw_cmd.hdr.buf_len = FW_CEM_CMD_DRIVER_INFO_LEN;
3634 fw_cmd.hdr.cmd_or_resp.cmd_resv = FW_CEM_CMD_RESERVED;
3635 fw_cmd.port_num = (u8)hw->bus.func;
3636 fw_cmd.ver_maj = maj;
3637 fw_cmd.ver_min = min;
3638 fw_cmd.ver_build = build;
3639 fw_cmd.ver_sub = sub;
3640 fw_cmd.hdr.checksum = 0;
3641 fw_cmd.hdr.checksum = ixgbe_calculate_checksum((u8 *)&fw_cmd,
3642 (FW_CEM_HDR_LEN + fw_cmd.hdr.buf_len));
3646 for (i = 0; i <= FW_CEM_MAX_RETRIES; i++) {
3647 ret_val = ixgbe_host_interface_command(hw, (u32 *)&fw_cmd,
3652 if (fw_cmd.hdr.cmd_or_resp.ret_status ==
3653 FW_CEM_RESP_STATUS_SUCCESS)
3656 ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND;
3661 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_SW_MNG_SM);
3667 * ixgbe_clear_tx_pending - Clear pending TX work from the PCIe fifo
3668 * @hw: pointer to the hardware structure
3670 * The 82599 and x540 MACs can experience issues if TX work is still pending
3671 * when a reset occurs. This function prevents this by flushing the PCIe
3672 * buffers on the system.
3674 void ixgbe_clear_tx_pending(struct ixgbe_hw *hw)
3676 u32 gcr_ext, hlreg0;
3679 * If double reset is not requested then all transactions should
3680 * already be clear and as such there is no work to do
3682 if (!(hw->mac.flags & IXGBE_FLAGS_DOUBLE_RESET_REQUIRED))
3686 * Set loopback enable to prevent any transmits from being sent
3687 * should the link come up. This assumes that the RXCTRL.RXEN bit
3688 * has already been cleared.
3690 hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0);
3691 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0 | IXGBE_HLREG0_LPBK);
3693 /* initiate cleaning flow for buffers in the PCIe transaction layer */
3694 gcr_ext = IXGBE_READ_REG(hw, IXGBE_GCR_EXT);
3695 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT,
3696 gcr_ext | IXGBE_GCR_EXT_BUFFERS_CLEAR);
3698 /* Flush all writes and allow 20usec for all transactions to clear */
3699 IXGBE_WRITE_FLUSH(hw);
3702 /* restore previous register values */
3703 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, gcr_ext);
3704 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0);
3707 static const u8 ixgbe_emc_temp_data[4] = {
3708 IXGBE_EMC_INTERNAL_DATA,
3709 IXGBE_EMC_DIODE1_DATA,
3710 IXGBE_EMC_DIODE2_DATA,
3711 IXGBE_EMC_DIODE3_DATA
3713 static const u8 ixgbe_emc_therm_limit[4] = {
3714 IXGBE_EMC_INTERNAL_THERM_LIMIT,
3715 IXGBE_EMC_DIODE1_THERM_LIMIT,
3716 IXGBE_EMC_DIODE2_THERM_LIMIT,
3717 IXGBE_EMC_DIODE3_THERM_LIMIT
3721 * ixgbe_get_ets_data - Extracts the ETS bit data
3722 * @hw: pointer to hardware structure
3723 * @ets_cfg: extected ETS data
3724 * @ets_offset: offset of ETS data
3726 * Returns error code.
3728 static s32 ixgbe_get_ets_data(struct ixgbe_hw *hw, u16 *ets_cfg,
3733 status = hw->eeprom.ops.read(hw, IXGBE_ETS_CFG, ets_offset);
3737 if ((*ets_offset == 0x0000) || (*ets_offset == 0xFFFF)) {
3738 status = IXGBE_NOT_IMPLEMENTED;
3742 status = hw->eeprom.ops.read(hw, *ets_offset, ets_cfg);
3746 if ((*ets_cfg & IXGBE_ETS_TYPE_MASK) != IXGBE_ETS_TYPE_EMC_SHIFTED) {
3747 status = IXGBE_NOT_IMPLEMENTED;
3756 * ixgbe_get_thermal_sensor_data - Gathers thermal sensor data
3757 * @hw: pointer to hardware structure
3759 * Returns the thermal sensor data structure
3761 s32 ixgbe_get_thermal_sensor_data_generic(struct ixgbe_hw *hw)
3769 struct ixgbe_thermal_sensor_data *data = &hw->mac.thermal_sensor_data;
3771 /* Only support thermal sensors attached to physical port 0 */
3772 if ((IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1)) {
3773 status = IXGBE_NOT_IMPLEMENTED;
3777 status = ixgbe_get_ets_data(hw, &ets_cfg, &ets_offset);
3781 num_sensors = (ets_cfg & IXGBE_ETS_NUM_SENSORS_MASK);
3782 if (num_sensors > IXGBE_MAX_SENSORS)
3783 num_sensors = IXGBE_MAX_SENSORS;
3785 for (i = 0; i < num_sensors; i++) {
3789 status = hw->eeprom.ops.read(hw, (ets_offset + 1 + i),
3794 sensor_index = ((ets_sensor & IXGBE_ETS_DATA_INDEX_MASK) >>
3795 IXGBE_ETS_DATA_INDEX_SHIFT);
3796 sensor_location = ((ets_sensor & IXGBE_ETS_DATA_LOC_MASK) >>
3797 IXGBE_ETS_DATA_LOC_SHIFT);
3799 if (sensor_location != 0) {
3800 status = hw->phy.ops.read_i2c_byte(hw,
3801 ixgbe_emc_temp_data[sensor_index],
3802 IXGBE_I2C_THERMAL_SENSOR_ADDR,
3803 &data->sensor[i].temp);
3813 * ixgbe_init_thermal_sensor_thresh_generic - Inits thermal sensor thresholds
3814 * @hw: pointer to hardware structure
3816 * Inits the thermal sensor thresholds according to the NVM map
3817 * and save off the threshold and location values into mac.thermal_sensor_data
3819 s32 ixgbe_init_thermal_sensor_thresh_generic(struct ixgbe_hw *hw)
3825 u8 low_thresh_delta;
3829 struct ixgbe_thermal_sensor_data *data = &hw->mac.thermal_sensor_data;
3831 memset(data, 0, sizeof(struct ixgbe_thermal_sensor_data));
3833 /* Only support thermal sensors attached to physical port 0 */
3834 if ((IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1)) {
3835 status = IXGBE_NOT_IMPLEMENTED;
3839 status = ixgbe_get_ets_data(hw, &ets_cfg, &ets_offset);
3843 low_thresh_delta = ((ets_cfg & IXGBE_ETS_LTHRES_DELTA_MASK) >>
3844 IXGBE_ETS_LTHRES_DELTA_SHIFT);
3845 num_sensors = (ets_cfg & IXGBE_ETS_NUM_SENSORS_MASK);
3846 if (num_sensors > IXGBE_MAX_SENSORS)
3847 num_sensors = IXGBE_MAX_SENSORS;
3849 for (i = 0; i < num_sensors; i++) {
3853 if (hw->eeprom.ops.read(hw, ets_offset + 1 + i, &ets_sensor)) {
3854 hw_err(hw, "eeprom read at offset %d failed\n",
3855 ets_offset + 1 + i);
3858 sensor_index = ((ets_sensor & IXGBE_ETS_DATA_INDEX_MASK) >>
3859 IXGBE_ETS_DATA_INDEX_SHIFT);
3860 sensor_location = ((ets_sensor & IXGBE_ETS_DATA_LOC_MASK) >>
3861 IXGBE_ETS_DATA_LOC_SHIFT);
3862 therm_limit = ets_sensor & IXGBE_ETS_DATA_HTHRESH_MASK;
3864 hw->phy.ops.write_i2c_byte(hw,
3865 ixgbe_emc_therm_limit[sensor_index],
3866 IXGBE_I2C_THERMAL_SENSOR_ADDR, therm_limit);
3868 if (sensor_location == 0)
3871 data->sensor[i].location = sensor_location;
3872 data->sensor[i].caution_thresh = therm_limit;
3873 data->sensor[i].max_op_thresh = therm_limit - low_thresh_delta;