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:
77 hw->mac.ops.check_link(hw, &speed, &link_up, false);
78 /* if link is down, assume supported */
80 supported = speed == IXGBE_LINK_SPEED_1GB_FULL ?
85 case ixgbe_media_type_backplane:
88 case ixgbe_media_type_copper:
89 /* only some copper devices support flow control autoneg */
90 switch (hw->device_id) {
91 case IXGBE_DEV_ID_82599_T3_LOM:
92 case IXGBE_DEV_ID_X540T:
93 case IXGBE_DEV_ID_X540T1:
107 * ixgbe_setup_fc - Set up flow control
108 * @hw: pointer to hardware structure
110 * Called at init time to set up flow control.
112 static s32 ixgbe_setup_fc(struct ixgbe_hw *hw)
115 u32 reg = 0, reg_bp = 0;
120 * Validate the requested mode. Strict IEEE mode does not allow
121 * ixgbe_fc_rx_pause because it will cause us to fail at UNH.
123 if (hw->fc.strict_ieee && hw->fc.requested_mode == ixgbe_fc_rx_pause) {
124 hw_dbg(hw, "ixgbe_fc_rx_pause not valid in strict IEEE mode\n");
125 return IXGBE_ERR_INVALID_LINK_SETTINGS;
129 * 10gig parts do not have a word in the EEPROM to determine the
130 * default flow control setting, so we explicitly set it to full.
132 if (hw->fc.requested_mode == ixgbe_fc_default)
133 hw->fc.requested_mode = ixgbe_fc_full;
136 * Set up the 1G and 10G flow control advertisement registers so the
137 * HW will be able to do fc autoneg once the cable is plugged in. If
138 * we link at 10G, the 1G advertisement is harmless and vice versa.
140 switch (hw->phy.media_type) {
141 case ixgbe_media_type_backplane:
142 /* some MAC's need RMW protection on AUTOC */
143 ret_val = hw->mac.ops.prot_autoc_read(hw, &locked, ®_bp);
147 /* only backplane uses autoc so fall though */
148 case ixgbe_media_type_fiber:
149 reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANA);
152 case ixgbe_media_type_copper:
153 hw->phy.ops.read_reg(hw, MDIO_AN_ADVERTISE,
154 MDIO_MMD_AN, ®_cu);
161 * The possible values of fc.requested_mode are:
162 * 0: Flow control is completely disabled
163 * 1: Rx flow control is enabled (we can receive pause frames,
164 * but not send pause frames).
165 * 2: Tx flow control is enabled (we can send pause frames but
166 * we do not support receiving pause frames).
167 * 3: Both Rx and Tx flow control (symmetric) are enabled.
170 switch (hw->fc.requested_mode) {
172 /* Flow control completely disabled by software override. */
173 reg &= ~(IXGBE_PCS1GANA_SYM_PAUSE | IXGBE_PCS1GANA_ASM_PAUSE);
174 if (hw->phy.media_type == ixgbe_media_type_backplane)
175 reg_bp &= ~(IXGBE_AUTOC_SYM_PAUSE |
176 IXGBE_AUTOC_ASM_PAUSE);
177 else if (hw->phy.media_type == ixgbe_media_type_copper)
178 reg_cu &= ~(IXGBE_TAF_SYM_PAUSE | IXGBE_TAF_ASM_PAUSE);
180 case ixgbe_fc_tx_pause:
182 * Tx Flow control is enabled, and Rx Flow control is
183 * disabled by software override.
185 reg |= IXGBE_PCS1GANA_ASM_PAUSE;
186 reg &= ~IXGBE_PCS1GANA_SYM_PAUSE;
187 if (hw->phy.media_type == ixgbe_media_type_backplane) {
188 reg_bp |= IXGBE_AUTOC_ASM_PAUSE;
189 reg_bp &= ~IXGBE_AUTOC_SYM_PAUSE;
190 } else if (hw->phy.media_type == ixgbe_media_type_copper) {
191 reg_cu |= IXGBE_TAF_ASM_PAUSE;
192 reg_cu &= ~IXGBE_TAF_SYM_PAUSE;
195 case ixgbe_fc_rx_pause:
197 * Rx Flow control is enabled and Tx Flow control is
198 * disabled by software override. Since there really
199 * isn't a way to advertise that we are capable of RX
200 * Pause ONLY, we will advertise that we support both
201 * symmetric and asymmetric Rx PAUSE, as such we fall
202 * through to the fc_full statement. Later, we will
203 * disable the adapter's ability to send PAUSE frames.
206 /* Flow control (both Rx and Tx) is enabled by SW override. */
207 reg |= IXGBE_PCS1GANA_SYM_PAUSE | IXGBE_PCS1GANA_ASM_PAUSE;
208 if (hw->phy.media_type == ixgbe_media_type_backplane)
209 reg_bp |= IXGBE_AUTOC_SYM_PAUSE |
210 IXGBE_AUTOC_ASM_PAUSE;
211 else if (hw->phy.media_type == ixgbe_media_type_copper)
212 reg_cu |= IXGBE_TAF_SYM_PAUSE | IXGBE_TAF_ASM_PAUSE;
215 hw_dbg(hw, "Flow control param set incorrectly\n");
216 return IXGBE_ERR_CONFIG;
219 if (hw->mac.type != ixgbe_mac_X540) {
221 * Enable auto-negotiation between the MAC & PHY;
222 * the MAC will advertise clause 37 flow control.
224 IXGBE_WRITE_REG(hw, IXGBE_PCS1GANA, reg);
225 reg = IXGBE_READ_REG(hw, IXGBE_PCS1GLCTL);
227 /* Disable AN timeout */
228 if (hw->fc.strict_ieee)
229 reg &= ~IXGBE_PCS1GLCTL_AN_1G_TIMEOUT_EN;
231 IXGBE_WRITE_REG(hw, IXGBE_PCS1GLCTL, reg);
232 hw_dbg(hw, "Set up FC; PCS1GLCTL = 0x%08X\n", reg);
236 * AUTOC restart handles negotiation of 1G and 10G on backplane
237 * and copper. There is no need to set the PCS1GCTL register.
240 if (hw->phy.media_type == ixgbe_media_type_backplane) {
241 /* Need the SW/FW semaphore around AUTOC writes if 82599 and
242 * LESM is on, likewise reset_pipeline requries the lock as
243 * it also writes AUTOC.
245 ret_val = hw->mac.ops.prot_autoc_write(hw, reg_bp, locked);
249 } else if ((hw->phy.media_type == ixgbe_media_type_copper) &&
250 ixgbe_device_supports_autoneg_fc(hw)) {
251 hw->phy.ops.write_reg(hw, MDIO_AN_ADVERTISE,
252 MDIO_MMD_AN, reg_cu);
255 hw_dbg(hw, "Set up FC; IXGBE_AUTOC = 0x%08X\n", reg);
260 * ixgbe_start_hw_generic - Prepare hardware for Tx/Rx
261 * @hw: pointer to hardware structure
263 * Starts the hardware by filling the bus info structure and media type, clears
264 * all on chip counters, initializes receive address registers, multicast
265 * table, VLAN filter table, calls routine to set up link and flow control
266 * settings, and leaves transmit and receive units disabled and uninitialized
268 s32 ixgbe_start_hw_generic(struct ixgbe_hw *hw)
273 /* Set the media type */
274 hw->phy.media_type = hw->mac.ops.get_media_type(hw);
276 /* Identify the PHY */
277 hw->phy.ops.identify(hw);
279 /* Clear the VLAN filter table */
280 hw->mac.ops.clear_vfta(hw);
282 /* Clear statistics registers */
283 hw->mac.ops.clear_hw_cntrs(hw);
285 /* Set No Snoop Disable */
286 ctrl_ext = IXGBE_READ_REG(hw, IXGBE_CTRL_EXT);
287 ctrl_ext |= IXGBE_CTRL_EXT_NS_DIS;
288 IXGBE_WRITE_REG(hw, IXGBE_CTRL_EXT, ctrl_ext);
289 IXGBE_WRITE_FLUSH(hw);
291 /* Setup flow control */
292 ret_val = ixgbe_setup_fc(hw);
296 /* Clear adapter stopped flag */
297 hw->adapter_stopped = false;
303 * ixgbe_start_hw_gen2 - Init sequence for common device family
304 * @hw: pointer to hw structure
306 * Performs the init sequence common to the second generation
308 * Devices in the second generation:
312 s32 ixgbe_start_hw_gen2(struct ixgbe_hw *hw)
317 /* Clear the rate limiters */
318 for (i = 0; i < hw->mac.max_tx_queues; i++) {
319 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, i);
320 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, 0);
322 IXGBE_WRITE_FLUSH(hw);
324 /* Disable relaxed ordering */
325 for (i = 0; i < hw->mac.max_tx_queues; i++) {
326 regval = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL_82599(i));
327 regval &= ~IXGBE_DCA_TXCTRL_DESC_WRO_EN;
328 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL_82599(i), regval);
331 for (i = 0; i < hw->mac.max_rx_queues; i++) {
332 regval = IXGBE_READ_REG(hw, IXGBE_DCA_RXCTRL(i));
333 regval &= ~(IXGBE_DCA_RXCTRL_DATA_WRO_EN |
334 IXGBE_DCA_RXCTRL_HEAD_WRO_EN);
335 IXGBE_WRITE_REG(hw, IXGBE_DCA_RXCTRL(i), regval);
342 * ixgbe_init_hw_generic - Generic hardware initialization
343 * @hw: pointer to hardware structure
345 * Initialize the hardware by resetting the hardware, filling the bus info
346 * structure and media type, clears all on chip counters, initializes receive
347 * address registers, multicast table, VLAN filter table, calls routine to set
348 * up link and flow control settings, and leaves transmit and receive units
349 * disabled and uninitialized
351 s32 ixgbe_init_hw_generic(struct ixgbe_hw *hw)
355 /* Reset the hardware */
356 status = hw->mac.ops.reset_hw(hw);
360 status = hw->mac.ops.start_hw(hw);
367 * ixgbe_clear_hw_cntrs_generic - Generic clear hardware counters
368 * @hw: pointer to hardware structure
370 * Clears all hardware statistics counters by reading them from the hardware
371 * Statistics counters are clear on read.
373 s32 ixgbe_clear_hw_cntrs_generic(struct ixgbe_hw *hw)
377 IXGBE_READ_REG(hw, IXGBE_CRCERRS);
378 IXGBE_READ_REG(hw, IXGBE_ILLERRC);
379 IXGBE_READ_REG(hw, IXGBE_ERRBC);
380 IXGBE_READ_REG(hw, IXGBE_MSPDC);
381 for (i = 0; i < 8; i++)
382 IXGBE_READ_REG(hw, IXGBE_MPC(i));
384 IXGBE_READ_REG(hw, IXGBE_MLFC);
385 IXGBE_READ_REG(hw, IXGBE_MRFC);
386 IXGBE_READ_REG(hw, IXGBE_RLEC);
387 IXGBE_READ_REG(hw, IXGBE_LXONTXC);
388 IXGBE_READ_REG(hw, IXGBE_LXOFFTXC);
389 if (hw->mac.type >= ixgbe_mac_82599EB) {
390 IXGBE_READ_REG(hw, IXGBE_LXONRXCNT);
391 IXGBE_READ_REG(hw, IXGBE_LXOFFRXCNT);
393 IXGBE_READ_REG(hw, IXGBE_LXONRXC);
394 IXGBE_READ_REG(hw, IXGBE_LXOFFRXC);
397 for (i = 0; i < 8; i++) {
398 IXGBE_READ_REG(hw, IXGBE_PXONTXC(i));
399 IXGBE_READ_REG(hw, IXGBE_PXOFFTXC(i));
400 if (hw->mac.type >= ixgbe_mac_82599EB) {
401 IXGBE_READ_REG(hw, IXGBE_PXONRXCNT(i));
402 IXGBE_READ_REG(hw, IXGBE_PXOFFRXCNT(i));
404 IXGBE_READ_REG(hw, IXGBE_PXONRXC(i));
405 IXGBE_READ_REG(hw, IXGBE_PXOFFRXC(i));
408 if (hw->mac.type >= ixgbe_mac_82599EB)
409 for (i = 0; i < 8; i++)
410 IXGBE_READ_REG(hw, IXGBE_PXON2OFFCNT(i));
411 IXGBE_READ_REG(hw, IXGBE_PRC64);
412 IXGBE_READ_REG(hw, IXGBE_PRC127);
413 IXGBE_READ_REG(hw, IXGBE_PRC255);
414 IXGBE_READ_REG(hw, IXGBE_PRC511);
415 IXGBE_READ_REG(hw, IXGBE_PRC1023);
416 IXGBE_READ_REG(hw, IXGBE_PRC1522);
417 IXGBE_READ_REG(hw, IXGBE_GPRC);
418 IXGBE_READ_REG(hw, IXGBE_BPRC);
419 IXGBE_READ_REG(hw, IXGBE_MPRC);
420 IXGBE_READ_REG(hw, IXGBE_GPTC);
421 IXGBE_READ_REG(hw, IXGBE_GORCL);
422 IXGBE_READ_REG(hw, IXGBE_GORCH);
423 IXGBE_READ_REG(hw, IXGBE_GOTCL);
424 IXGBE_READ_REG(hw, IXGBE_GOTCH);
425 if (hw->mac.type == ixgbe_mac_82598EB)
426 for (i = 0; i < 8; i++)
427 IXGBE_READ_REG(hw, IXGBE_RNBC(i));
428 IXGBE_READ_REG(hw, IXGBE_RUC);
429 IXGBE_READ_REG(hw, IXGBE_RFC);
430 IXGBE_READ_REG(hw, IXGBE_ROC);
431 IXGBE_READ_REG(hw, IXGBE_RJC);
432 IXGBE_READ_REG(hw, IXGBE_MNGPRC);
433 IXGBE_READ_REG(hw, IXGBE_MNGPDC);
434 IXGBE_READ_REG(hw, IXGBE_MNGPTC);
435 IXGBE_READ_REG(hw, IXGBE_TORL);
436 IXGBE_READ_REG(hw, IXGBE_TORH);
437 IXGBE_READ_REG(hw, IXGBE_TPR);
438 IXGBE_READ_REG(hw, IXGBE_TPT);
439 IXGBE_READ_REG(hw, IXGBE_PTC64);
440 IXGBE_READ_REG(hw, IXGBE_PTC127);
441 IXGBE_READ_REG(hw, IXGBE_PTC255);
442 IXGBE_READ_REG(hw, IXGBE_PTC511);
443 IXGBE_READ_REG(hw, IXGBE_PTC1023);
444 IXGBE_READ_REG(hw, IXGBE_PTC1522);
445 IXGBE_READ_REG(hw, IXGBE_MPTC);
446 IXGBE_READ_REG(hw, IXGBE_BPTC);
447 for (i = 0; i < 16; i++) {
448 IXGBE_READ_REG(hw, IXGBE_QPRC(i));
449 IXGBE_READ_REG(hw, IXGBE_QPTC(i));
450 if (hw->mac.type >= ixgbe_mac_82599EB) {
451 IXGBE_READ_REG(hw, IXGBE_QBRC_L(i));
452 IXGBE_READ_REG(hw, IXGBE_QBRC_H(i));
453 IXGBE_READ_REG(hw, IXGBE_QBTC_L(i));
454 IXGBE_READ_REG(hw, IXGBE_QBTC_H(i));
455 IXGBE_READ_REG(hw, IXGBE_QPRDC(i));
457 IXGBE_READ_REG(hw, IXGBE_QBRC(i));
458 IXGBE_READ_REG(hw, IXGBE_QBTC(i));
462 if (hw->mac.type == ixgbe_mac_X540) {
464 hw->phy.ops.identify(hw);
465 hw->phy.ops.read_reg(hw, IXGBE_PCRC8ECL, MDIO_MMD_PCS, &i);
466 hw->phy.ops.read_reg(hw, IXGBE_PCRC8ECH, MDIO_MMD_PCS, &i);
467 hw->phy.ops.read_reg(hw, IXGBE_LDPCECL, MDIO_MMD_PCS, &i);
468 hw->phy.ops.read_reg(hw, IXGBE_LDPCECH, MDIO_MMD_PCS, &i);
475 * ixgbe_read_pba_string_generic - Reads part number string from EEPROM
476 * @hw: pointer to hardware structure
477 * @pba_num: stores the part number string from the EEPROM
478 * @pba_num_size: part number string buffer length
480 * Reads the part number string from the EEPROM.
482 s32 ixgbe_read_pba_string_generic(struct ixgbe_hw *hw, u8 *pba_num,
491 if (pba_num == NULL) {
492 hw_dbg(hw, "PBA string buffer was null\n");
493 return IXGBE_ERR_INVALID_ARGUMENT;
496 ret_val = hw->eeprom.ops.read(hw, IXGBE_PBANUM0_PTR, &data);
498 hw_dbg(hw, "NVM Read Error\n");
502 ret_val = hw->eeprom.ops.read(hw, IXGBE_PBANUM1_PTR, &pba_ptr);
504 hw_dbg(hw, "NVM Read Error\n");
509 * if data is not ptr guard the PBA must be in legacy format which
510 * means pba_ptr is actually our second data word for the PBA number
511 * and we can decode it into an ascii string
513 if (data != IXGBE_PBANUM_PTR_GUARD) {
514 hw_dbg(hw, "NVM PBA number is not stored as string\n");
516 /* we will need 11 characters to store the PBA */
517 if (pba_num_size < 11) {
518 hw_dbg(hw, "PBA string buffer too small\n");
519 return IXGBE_ERR_NO_SPACE;
522 /* extract hex string from data and pba_ptr */
523 pba_num[0] = (data >> 12) & 0xF;
524 pba_num[1] = (data >> 8) & 0xF;
525 pba_num[2] = (data >> 4) & 0xF;
526 pba_num[3] = data & 0xF;
527 pba_num[4] = (pba_ptr >> 12) & 0xF;
528 pba_num[5] = (pba_ptr >> 8) & 0xF;
531 pba_num[8] = (pba_ptr >> 4) & 0xF;
532 pba_num[9] = pba_ptr & 0xF;
534 /* put a null character on the end of our string */
537 /* switch all the data but the '-' to hex char */
538 for (offset = 0; offset < 10; offset++) {
539 if (pba_num[offset] < 0xA)
540 pba_num[offset] += '0';
541 else if (pba_num[offset] < 0x10)
542 pba_num[offset] += 'A' - 0xA;
548 ret_val = hw->eeprom.ops.read(hw, pba_ptr, &length);
550 hw_dbg(hw, "NVM Read Error\n");
554 if (length == 0xFFFF || length == 0) {
555 hw_dbg(hw, "NVM PBA number section invalid length\n");
556 return IXGBE_ERR_PBA_SECTION;
559 /* check if pba_num buffer is big enough */
560 if (pba_num_size < (((u32)length * 2) - 1)) {
561 hw_dbg(hw, "PBA string buffer too small\n");
562 return IXGBE_ERR_NO_SPACE;
565 /* trim pba length from start of string */
569 for (offset = 0; offset < length; offset++) {
570 ret_val = hw->eeprom.ops.read(hw, pba_ptr + offset, &data);
572 hw_dbg(hw, "NVM Read Error\n");
575 pba_num[offset * 2] = (u8)(data >> 8);
576 pba_num[(offset * 2) + 1] = (u8)(data & 0xFF);
578 pba_num[offset * 2] = '\0';
584 * ixgbe_get_mac_addr_generic - Generic get MAC address
585 * @hw: pointer to hardware structure
586 * @mac_addr: Adapter MAC address
588 * Reads the adapter's MAC address from first Receive Address Register (RAR0)
589 * A reset of the adapter must be performed prior to calling this function
590 * in order for the MAC address to have been loaded from the EEPROM into RAR0
592 s32 ixgbe_get_mac_addr_generic(struct ixgbe_hw *hw, u8 *mac_addr)
598 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(0));
599 rar_low = IXGBE_READ_REG(hw, IXGBE_RAL(0));
601 for (i = 0; i < 4; i++)
602 mac_addr[i] = (u8)(rar_low >> (i*8));
604 for (i = 0; i < 2; i++)
605 mac_addr[i+4] = (u8)(rar_high >> (i*8));
610 enum ixgbe_bus_width ixgbe_convert_bus_width(u16 link_status)
612 switch (link_status & IXGBE_PCI_LINK_WIDTH) {
613 case IXGBE_PCI_LINK_WIDTH_1:
614 return ixgbe_bus_width_pcie_x1;
615 case IXGBE_PCI_LINK_WIDTH_2:
616 return ixgbe_bus_width_pcie_x2;
617 case IXGBE_PCI_LINK_WIDTH_4:
618 return ixgbe_bus_width_pcie_x4;
619 case IXGBE_PCI_LINK_WIDTH_8:
620 return ixgbe_bus_width_pcie_x8;
622 return ixgbe_bus_width_unknown;
626 enum ixgbe_bus_speed ixgbe_convert_bus_speed(u16 link_status)
628 switch (link_status & IXGBE_PCI_LINK_SPEED) {
629 case IXGBE_PCI_LINK_SPEED_2500:
630 return ixgbe_bus_speed_2500;
631 case IXGBE_PCI_LINK_SPEED_5000:
632 return ixgbe_bus_speed_5000;
633 case IXGBE_PCI_LINK_SPEED_8000:
634 return ixgbe_bus_speed_8000;
636 return ixgbe_bus_speed_unknown;
641 * ixgbe_get_bus_info_generic - Generic set PCI bus info
642 * @hw: pointer to hardware structure
644 * Sets the PCI bus info (speed, width, type) within the ixgbe_hw structure
646 s32 ixgbe_get_bus_info_generic(struct ixgbe_hw *hw)
650 hw->bus.type = ixgbe_bus_type_pci_express;
652 /* Get the negotiated link width and speed from PCI config space */
653 link_status = ixgbe_read_pci_cfg_word(hw, IXGBE_PCI_LINK_STATUS);
655 hw->bus.width = ixgbe_convert_bus_width(link_status);
656 hw->bus.speed = ixgbe_convert_bus_speed(link_status);
658 hw->mac.ops.set_lan_id(hw);
664 * ixgbe_set_lan_id_multi_port_pcie - Set LAN id for PCIe multiple port devices
665 * @hw: pointer to the HW structure
667 * Determines the LAN function id by reading memory-mapped registers
668 * and swaps the port value if requested.
670 void ixgbe_set_lan_id_multi_port_pcie(struct ixgbe_hw *hw)
672 struct ixgbe_bus_info *bus = &hw->bus;
675 reg = IXGBE_READ_REG(hw, IXGBE_STATUS);
676 bus->func = (reg & IXGBE_STATUS_LAN_ID) >> IXGBE_STATUS_LAN_ID_SHIFT;
677 bus->lan_id = bus->func;
679 /* check for a port swap */
680 reg = IXGBE_READ_REG(hw, IXGBE_FACTPS);
681 if (reg & IXGBE_FACTPS_LFS)
686 * ixgbe_stop_adapter_generic - Generic stop Tx/Rx units
687 * @hw: pointer to hardware structure
689 * Sets the adapter_stopped flag within ixgbe_hw struct. Clears interrupts,
690 * disables transmit and receive units. The adapter_stopped flag is used by
691 * the shared code and drivers to determine if the adapter is in a stopped
692 * state and should not touch the hardware.
694 s32 ixgbe_stop_adapter_generic(struct ixgbe_hw *hw)
700 * Set the adapter_stopped flag so other driver functions stop touching
703 hw->adapter_stopped = true;
705 /* Disable the receive unit */
706 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, 0);
708 /* Clear interrupt mask to stop interrupts from being generated */
709 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK);
711 /* Clear any pending interrupts, flush previous writes */
712 IXGBE_READ_REG(hw, IXGBE_EICR);
714 /* Disable the transmit unit. Each queue must be disabled. */
715 for (i = 0; i < hw->mac.max_tx_queues; i++)
716 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(i), IXGBE_TXDCTL_SWFLSH);
718 /* Disable the receive unit by stopping each queue */
719 for (i = 0; i < hw->mac.max_rx_queues; i++) {
720 reg_val = IXGBE_READ_REG(hw, IXGBE_RXDCTL(i));
721 reg_val &= ~IXGBE_RXDCTL_ENABLE;
722 reg_val |= IXGBE_RXDCTL_SWFLSH;
723 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(i), reg_val);
726 /* flush all queues disables */
727 IXGBE_WRITE_FLUSH(hw);
728 usleep_range(1000, 2000);
731 * Prevent the PCI-E bus from from hanging by disabling PCI-E master
732 * access and verify no pending requests
734 return ixgbe_disable_pcie_master(hw);
738 * ixgbe_led_on_generic - Turns on the software controllable LEDs.
739 * @hw: pointer to hardware structure
740 * @index: led number to turn on
742 s32 ixgbe_led_on_generic(struct ixgbe_hw *hw, u32 index)
744 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
746 /* To turn on the LED, set mode to ON. */
747 led_reg &= ~IXGBE_LED_MODE_MASK(index);
748 led_reg |= IXGBE_LED_ON << IXGBE_LED_MODE_SHIFT(index);
749 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
750 IXGBE_WRITE_FLUSH(hw);
756 * ixgbe_led_off_generic - Turns off the software controllable LEDs.
757 * @hw: pointer to hardware structure
758 * @index: led number to turn off
760 s32 ixgbe_led_off_generic(struct ixgbe_hw *hw, u32 index)
762 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
764 /* To turn off the LED, set mode to OFF. */
765 led_reg &= ~IXGBE_LED_MODE_MASK(index);
766 led_reg |= IXGBE_LED_OFF << IXGBE_LED_MODE_SHIFT(index);
767 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
768 IXGBE_WRITE_FLUSH(hw);
774 * ixgbe_init_eeprom_params_generic - Initialize EEPROM params
775 * @hw: pointer to hardware structure
777 * Initializes the EEPROM parameters ixgbe_eeprom_info within the
778 * ixgbe_hw struct in order to set up EEPROM access.
780 s32 ixgbe_init_eeprom_params_generic(struct ixgbe_hw *hw)
782 struct ixgbe_eeprom_info *eeprom = &hw->eeprom;
786 if (eeprom->type == ixgbe_eeprom_uninitialized) {
787 eeprom->type = ixgbe_eeprom_none;
788 /* Set default semaphore delay to 10ms which is a well
790 eeprom->semaphore_delay = 10;
791 /* Clear EEPROM page size, it will be initialized as needed */
792 eeprom->word_page_size = 0;
795 * Check for EEPROM present first.
796 * If not present leave as none
798 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
799 if (eec & IXGBE_EEC_PRES) {
800 eeprom->type = ixgbe_eeprom_spi;
803 * SPI EEPROM is assumed here. This code would need to
804 * change if a future EEPROM is not SPI.
806 eeprom_size = (u16)((eec & IXGBE_EEC_SIZE) >>
807 IXGBE_EEC_SIZE_SHIFT);
808 eeprom->word_size = 1 << (eeprom_size +
809 IXGBE_EEPROM_WORD_SIZE_SHIFT);
812 if (eec & IXGBE_EEC_ADDR_SIZE)
813 eeprom->address_bits = 16;
815 eeprom->address_bits = 8;
816 hw_dbg(hw, "Eeprom params: type = %d, size = %d, address bits: %d\n",
817 eeprom->type, eeprom->word_size, eeprom->address_bits);
824 * ixgbe_write_eeprom_buffer_bit_bang_generic - Write EEPROM using bit-bang
825 * @hw: pointer to hardware structure
826 * @offset: offset within the EEPROM to write
827 * @words: number of words
828 * @data: 16 bit word(s) to write to EEPROM
830 * Reads 16 bit word(s) from EEPROM through bit-bang method
832 s32 ixgbe_write_eeprom_buffer_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
833 u16 words, u16 *data)
838 hw->eeprom.ops.init_params(hw);
841 return IXGBE_ERR_INVALID_ARGUMENT;
843 if (offset + words > hw->eeprom.word_size)
844 return IXGBE_ERR_EEPROM;
847 * The EEPROM page size cannot be queried from the chip. We do lazy
848 * initialization. It is worth to do that when we write large buffer.
850 if ((hw->eeprom.word_page_size == 0) &&
851 (words > IXGBE_EEPROM_PAGE_SIZE_MAX))
852 ixgbe_detect_eeprom_page_size_generic(hw, offset);
855 * We cannot hold synchronization semaphores for too long
856 * to avoid other entity starvation. However it is more efficient
857 * to read in bursts than synchronizing access for each word.
859 for (i = 0; i < words; i += IXGBE_EEPROM_RD_BUFFER_MAX_COUNT) {
860 count = (words - i) / IXGBE_EEPROM_RD_BUFFER_MAX_COUNT > 0 ?
861 IXGBE_EEPROM_RD_BUFFER_MAX_COUNT : (words - i);
862 status = ixgbe_write_eeprom_buffer_bit_bang(hw, offset + i,
873 * ixgbe_write_eeprom_buffer_bit_bang - Writes 16 bit word(s) to EEPROM
874 * @hw: pointer to hardware structure
875 * @offset: offset within the EEPROM to be written to
876 * @words: number of word(s)
877 * @data: 16 bit word(s) to be written to the EEPROM
879 * If ixgbe_eeprom_update_checksum is not called after this function, the
880 * EEPROM will most likely contain an invalid checksum.
882 static s32 ixgbe_write_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset,
883 u16 words, u16 *data)
889 u8 write_opcode = IXGBE_EEPROM_WRITE_OPCODE_SPI;
891 /* Prepare the EEPROM for writing */
892 status = ixgbe_acquire_eeprom(hw);
896 if (ixgbe_ready_eeprom(hw) != 0) {
897 ixgbe_release_eeprom(hw);
898 return IXGBE_ERR_EEPROM;
901 for (i = 0; i < words; i++) {
902 ixgbe_standby_eeprom(hw);
904 /* Send the WRITE ENABLE command (8 bit opcode) */
905 ixgbe_shift_out_eeprom_bits(hw,
906 IXGBE_EEPROM_WREN_OPCODE_SPI,
907 IXGBE_EEPROM_OPCODE_BITS);
909 ixgbe_standby_eeprom(hw);
911 /* Some SPI eeproms use the 8th address bit embedded
914 if ((hw->eeprom.address_bits == 8) &&
915 ((offset + i) >= 128))
916 write_opcode |= IXGBE_EEPROM_A8_OPCODE_SPI;
918 /* Send the Write command (8-bit opcode + addr) */
919 ixgbe_shift_out_eeprom_bits(hw, write_opcode,
920 IXGBE_EEPROM_OPCODE_BITS);
921 ixgbe_shift_out_eeprom_bits(hw, (u16)((offset + i) * 2),
922 hw->eeprom.address_bits);
924 page_size = hw->eeprom.word_page_size;
926 /* Send the data in burst via SPI */
929 word = (word >> 8) | (word << 8);
930 ixgbe_shift_out_eeprom_bits(hw, word, 16);
935 /* do not wrap around page */
936 if (((offset + i) & (page_size - 1)) ==
939 } while (++i < words);
941 ixgbe_standby_eeprom(hw);
942 usleep_range(10000, 20000);
944 /* Done with writing - release the EEPROM */
945 ixgbe_release_eeprom(hw);
951 * ixgbe_write_eeprom_generic - Writes 16 bit value to EEPROM
952 * @hw: pointer to hardware structure
953 * @offset: offset within the EEPROM to be written to
954 * @data: 16 bit word to be written to the EEPROM
956 * If ixgbe_eeprom_update_checksum is not called after this function, the
957 * EEPROM will most likely contain an invalid checksum.
959 s32 ixgbe_write_eeprom_generic(struct ixgbe_hw *hw, u16 offset, u16 data)
961 hw->eeprom.ops.init_params(hw);
963 if (offset >= hw->eeprom.word_size)
964 return IXGBE_ERR_EEPROM;
966 return ixgbe_write_eeprom_buffer_bit_bang(hw, offset, 1, &data);
970 * ixgbe_read_eeprom_buffer_bit_bang_generic - Read EEPROM using bit-bang
971 * @hw: pointer to hardware structure
972 * @offset: offset within the EEPROM to be read
973 * @words: number of word(s)
974 * @data: read 16 bit words(s) from EEPROM
976 * Reads 16 bit word(s) from EEPROM through bit-bang method
978 s32 ixgbe_read_eeprom_buffer_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
979 u16 words, u16 *data)
984 hw->eeprom.ops.init_params(hw);
987 return IXGBE_ERR_INVALID_ARGUMENT;
989 if (offset + words > hw->eeprom.word_size)
990 return IXGBE_ERR_EEPROM;
993 * We cannot hold synchronization semaphores for too long
994 * to avoid other entity starvation. However it is more efficient
995 * to read in bursts than synchronizing access for each word.
997 for (i = 0; i < words; i += IXGBE_EEPROM_RD_BUFFER_MAX_COUNT) {
998 count = (words - i) / IXGBE_EEPROM_RD_BUFFER_MAX_COUNT > 0 ?
999 IXGBE_EEPROM_RD_BUFFER_MAX_COUNT : (words - i);
1001 status = ixgbe_read_eeprom_buffer_bit_bang(hw, offset + i,
1012 * ixgbe_read_eeprom_buffer_bit_bang - Read EEPROM using bit-bang
1013 * @hw: pointer to hardware structure
1014 * @offset: offset within the EEPROM to be read
1015 * @words: number of word(s)
1016 * @data: read 16 bit word(s) from EEPROM
1018 * Reads 16 bit word(s) from EEPROM through bit-bang method
1020 static s32 ixgbe_read_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset,
1021 u16 words, u16 *data)
1025 u8 read_opcode = IXGBE_EEPROM_READ_OPCODE_SPI;
1028 /* Prepare the EEPROM for reading */
1029 status = ixgbe_acquire_eeprom(hw);
1033 if (ixgbe_ready_eeprom(hw) != 0) {
1034 ixgbe_release_eeprom(hw);
1035 return IXGBE_ERR_EEPROM;
1038 for (i = 0; i < words; i++) {
1039 ixgbe_standby_eeprom(hw);
1040 /* Some SPI eeproms use the 8th address bit embedded
1043 if ((hw->eeprom.address_bits == 8) &&
1044 ((offset + i) >= 128))
1045 read_opcode |= IXGBE_EEPROM_A8_OPCODE_SPI;
1047 /* Send the READ command (opcode + addr) */
1048 ixgbe_shift_out_eeprom_bits(hw, read_opcode,
1049 IXGBE_EEPROM_OPCODE_BITS);
1050 ixgbe_shift_out_eeprom_bits(hw, (u16)((offset + i) * 2),
1051 hw->eeprom.address_bits);
1053 /* Read the data. */
1054 word_in = ixgbe_shift_in_eeprom_bits(hw, 16);
1055 data[i] = (word_in >> 8) | (word_in << 8);
1058 /* End this read operation */
1059 ixgbe_release_eeprom(hw);
1065 * ixgbe_read_eeprom_bit_bang_generic - Read EEPROM word using bit-bang
1066 * @hw: pointer to hardware structure
1067 * @offset: offset within the EEPROM to be read
1068 * @data: read 16 bit value from EEPROM
1070 * Reads 16 bit value from EEPROM through bit-bang method
1072 s32 ixgbe_read_eeprom_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
1075 hw->eeprom.ops.init_params(hw);
1077 if (offset >= hw->eeprom.word_size)
1078 return IXGBE_ERR_EEPROM;
1080 return ixgbe_read_eeprom_buffer_bit_bang(hw, offset, 1, data);
1084 * ixgbe_read_eerd_buffer_generic - Read EEPROM word(s) using EERD
1085 * @hw: pointer to hardware structure
1086 * @offset: offset of word in the EEPROM to read
1087 * @words: number of word(s)
1088 * @data: 16 bit word(s) from the EEPROM
1090 * Reads a 16 bit word(s) from the EEPROM using the EERD register.
1092 s32 ixgbe_read_eerd_buffer_generic(struct ixgbe_hw *hw, u16 offset,
1093 u16 words, u16 *data)
1099 hw->eeprom.ops.init_params(hw);
1102 return IXGBE_ERR_INVALID_ARGUMENT;
1104 if (offset >= hw->eeprom.word_size)
1105 return IXGBE_ERR_EEPROM;
1107 for (i = 0; i < words; i++) {
1108 eerd = ((offset + i) << IXGBE_EEPROM_RW_ADDR_SHIFT) |
1109 IXGBE_EEPROM_RW_REG_START;
1111 IXGBE_WRITE_REG(hw, IXGBE_EERD, eerd);
1112 status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_READ);
1115 data[i] = (IXGBE_READ_REG(hw, IXGBE_EERD) >>
1116 IXGBE_EEPROM_RW_REG_DATA);
1118 hw_dbg(hw, "Eeprom read timed out\n");
1127 * ixgbe_detect_eeprom_page_size_generic - Detect EEPROM page size
1128 * @hw: pointer to hardware structure
1129 * @offset: offset within the EEPROM to be used as a scratch pad
1131 * Discover EEPROM page size by writing marching data at given offset.
1132 * This function is called only when we are writing a new large buffer
1133 * at given offset so the data would be overwritten anyway.
1135 static s32 ixgbe_detect_eeprom_page_size_generic(struct ixgbe_hw *hw,
1138 u16 data[IXGBE_EEPROM_PAGE_SIZE_MAX];
1142 for (i = 0; i < IXGBE_EEPROM_PAGE_SIZE_MAX; i++)
1145 hw->eeprom.word_page_size = IXGBE_EEPROM_PAGE_SIZE_MAX;
1146 status = ixgbe_write_eeprom_buffer_bit_bang(hw, offset,
1147 IXGBE_EEPROM_PAGE_SIZE_MAX, data);
1148 hw->eeprom.word_page_size = 0;
1152 status = ixgbe_read_eeprom_buffer_bit_bang(hw, offset, 1, data);
1157 * When writing in burst more than the actual page size
1158 * EEPROM address wraps around current page.
1160 hw->eeprom.word_page_size = IXGBE_EEPROM_PAGE_SIZE_MAX - data[0];
1162 hw_dbg(hw, "Detected EEPROM page size = %d words.\n",
1163 hw->eeprom.word_page_size);
1168 * ixgbe_read_eerd_generic - Read EEPROM word using EERD
1169 * @hw: pointer to hardware structure
1170 * @offset: offset of word in the EEPROM to read
1171 * @data: word read from the EEPROM
1173 * Reads a 16 bit word from the EEPROM using the EERD register.
1175 s32 ixgbe_read_eerd_generic(struct ixgbe_hw *hw, u16 offset, u16 *data)
1177 return ixgbe_read_eerd_buffer_generic(hw, offset, 1, data);
1181 * ixgbe_write_eewr_buffer_generic - Write EEPROM word(s) using EEWR
1182 * @hw: pointer to hardware structure
1183 * @offset: offset of word in the EEPROM to write
1184 * @words: number of words
1185 * @data: word(s) write to the EEPROM
1187 * Write a 16 bit word(s) to the EEPROM using the EEWR register.
1189 s32 ixgbe_write_eewr_buffer_generic(struct ixgbe_hw *hw, u16 offset,
1190 u16 words, u16 *data)
1196 hw->eeprom.ops.init_params(hw);
1199 return IXGBE_ERR_INVALID_ARGUMENT;
1201 if (offset >= hw->eeprom.word_size)
1202 return IXGBE_ERR_EEPROM;
1204 for (i = 0; i < words; i++) {
1205 eewr = ((offset + i) << IXGBE_EEPROM_RW_ADDR_SHIFT) |
1206 (data[i] << IXGBE_EEPROM_RW_REG_DATA) |
1207 IXGBE_EEPROM_RW_REG_START;
1209 status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_WRITE);
1211 hw_dbg(hw, "Eeprom write EEWR timed out\n");
1215 IXGBE_WRITE_REG(hw, IXGBE_EEWR, eewr);
1217 status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_WRITE);
1219 hw_dbg(hw, "Eeprom write EEWR timed out\n");
1228 * ixgbe_write_eewr_generic - Write EEPROM word using EEWR
1229 * @hw: pointer to hardware structure
1230 * @offset: offset of word in the EEPROM to write
1231 * @data: word write to the EEPROM
1233 * Write a 16 bit word to the EEPROM using the EEWR register.
1235 s32 ixgbe_write_eewr_generic(struct ixgbe_hw *hw, u16 offset, u16 data)
1237 return ixgbe_write_eewr_buffer_generic(hw, offset, 1, &data);
1241 * ixgbe_poll_eerd_eewr_done - Poll EERD read or EEWR write status
1242 * @hw: pointer to hardware structure
1243 * @ee_reg: EEPROM flag for polling
1245 * Polls the status bit (bit 1) of the EERD or EEWR to determine when the
1246 * read or write is done respectively.
1248 static s32 ixgbe_poll_eerd_eewr_done(struct ixgbe_hw *hw, u32 ee_reg)
1253 for (i = 0; i < IXGBE_EERD_EEWR_ATTEMPTS; i++) {
1254 if (ee_reg == IXGBE_NVM_POLL_READ)
1255 reg = IXGBE_READ_REG(hw, IXGBE_EERD);
1257 reg = IXGBE_READ_REG(hw, IXGBE_EEWR);
1259 if (reg & IXGBE_EEPROM_RW_REG_DONE) {
1264 return IXGBE_ERR_EEPROM;
1268 * ixgbe_acquire_eeprom - Acquire EEPROM using bit-bang
1269 * @hw: pointer to hardware structure
1271 * Prepares EEPROM for access using bit-bang method. This function should
1272 * be called before issuing a command to the EEPROM.
1274 static s32 ixgbe_acquire_eeprom(struct ixgbe_hw *hw)
1279 if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) != 0)
1280 return IXGBE_ERR_SWFW_SYNC;
1282 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1284 /* Request EEPROM Access */
1285 eec |= IXGBE_EEC_REQ;
1286 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1288 for (i = 0; i < IXGBE_EEPROM_GRANT_ATTEMPTS; i++) {
1289 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1290 if (eec & IXGBE_EEC_GNT)
1295 /* Release if grant not acquired */
1296 if (!(eec & IXGBE_EEC_GNT)) {
1297 eec &= ~IXGBE_EEC_REQ;
1298 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1299 hw_dbg(hw, "Could not acquire EEPROM grant\n");
1301 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
1302 return IXGBE_ERR_EEPROM;
1305 /* Setup EEPROM for Read/Write */
1306 /* Clear CS and SK */
1307 eec &= ~(IXGBE_EEC_CS | IXGBE_EEC_SK);
1308 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1309 IXGBE_WRITE_FLUSH(hw);
1315 * ixgbe_get_eeprom_semaphore - Get hardware semaphore
1316 * @hw: pointer to hardware structure
1318 * Sets the hardware semaphores so EEPROM access can occur for bit-bang method
1320 static s32 ixgbe_get_eeprom_semaphore(struct ixgbe_hw *hw)
1326 /* Get SMBI software semaphore between device drivers first */
1327 for (i = 0; i < timeout; i++) {
1329 * If the SMBI bit is 0 when we read it, then the bit will be
1330 * set and we have the semaphore
1332 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
1333 if (!(swsm & IXGBE_SWSM_SMBI))
1335 usleep_range(50, 100);
1339 hw_dbg(hw, "Driver can't access the Eeprom - SMBI Semaphore not granted.\n");
1340 /* this release is particularly important because our attempts
1341 * above to get the semaphore may have succeeded, and if there
1342 * was a timeout, we should unconditionally clear the semaphore
1343 * bits to free the driver to make progress
1345 ixgbe_release_eeprom_semaphore(hw);
1347 usleep_range(50, 100);
1349 * If the SMBI bit is 0 when we read it, then the bit will be
1350 * set and we have the semaphore
1352 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
1353 if (swsm & IXGBE_SWSM_SMBI) {
1354 hw_dbg(hw, "Software semaphore SMBI between device drivers not granted.\n");
1355 return IXGBE_ERR_EEPROM;
1359 /* Now get the semaphore between SW/FW through the SWESMBI bit */
1360 for (i = 0; i < timeout; i++) {
1361 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
1363 /* Set the SW EEPROM semaphore bit to request access */
1364 swsm |= IXGBE_SWSM_SWESMBI;
1365 IXGBE_WRITE_REG(hw, IXGBE_SWSM, swsm);
1367 /* If we set the bit successfully then we got the
1370 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
1371 if (swsm & IXGBE_SWSM_SWESMBI)
1374 usleep_range(50, 100);
1377 /* Release semaphores and return error if SW EEPROM semaphore
1378 * was not granted because we don't have access to the EEPROM
1381 hw_dbg(hw, "SWESMBI Software EEPROM semaphore not granted.\n");
1382 ixgbe_release_eeprom_semaphore(hw);
1383 return IXGBE_ERR_EEPROM;
1390 * ixgbe_release_eeprom_semaphore - Release hardware semaphore
1391 * @hw: pointer to hardware structure
1393 * This function clears hardware semaphore bits.
1395 static void ixgbe_release_eeprom_semaphore(struct ixgbe_hw *hw)
1399 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
1401 /* Release both semaphores by writing 0 to the bits SWESMBI and SMBI */
1402 swsm &= ~(IXGBE_SWSM_SWESMBI | IXGBE_SWSM_SMBI);
1403 IXGBE_WRITE_REG(hw, IXGBE_SWSM, swsm);
1404 IXGBE_WRITE_FLUSH(hw);
1408 * ixgbe_ready_eeprom - Polls for EEPROM ready
1409 * @hw: pointer to hardware structure
1411 static s32 ixgbe_ready_eeprom(struct ixgbe_hw *hw)
1417 * Read "Status Register" repeatedly until the LSB is cleared. The
1418 * EEPROM will signal that the command has been completed by clearing
1419 * bit 0 of the internal status register. If it's not cleared within
1420 * 5 milliseconds, then error out.
1422 for (i = 0; i < IXGBE_EEPROM_MAX_RETRY_SPI; i += 5) {
1423 ixgbe_shift_out_eeprom_bits(hw, IXGBE_EEPROM_RDSR_OPCODE_SPI,
1424 IXGBE_EEPROM_OPCODE_BITS);
1425 spi_stat_reg = (u8)ixgbe_shift_in_eeprom_bits(hw, 8);
1426 if (!(spi_stat_reg & IXGBE_EEPROM_STATUS_RDY_SPI))
1430 ixgbe_standby_eeprom(hw);
1434 * On some parts, SPI write time could vary from 0-20mSec on 3.3V
1435 * devices (and only 0-5mSec on 5V devices)
1437 if (i >= IXGBE_EEPROM_MAX_RETRY_SPI) {
1438 hw_dbg(hw, "SPI EEPROM Status error\n");
1439 return IXGBE_ERR_EEPROM;
1446 * ixgbe_standby_eeprom - Returns EEPROM to a "standby" state
1447 * @hw: pointer to hardware structure
1449 static void ixgbe_standby_eeprom(struct ixgbe_hw *hw)
1453 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1455 /* Toggle CS to flush commands */
1456 eec |= IXGBE_EEC_CS;
1457 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1458 IXGBE_WRITE_FLUSH(hw);
1460 eec &= ~IXGBE_EEC_CS;
1461 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1462 IXGBE_WRITE_FLUSH(hw);
1467 * ixgbe_shift_out_eeprom_bits - Shift data bits out to the EEPROM.
1468 * @hw: pointer to hardware structure
1469 * @data: data to send to the EEPROM
1470 * @count: number of bits to shift out
1472 static void ixgbe_shift_out_eeprom_bits(struct ixgbe_hw *hw, u16 data,
1479 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1482 * Mask is used to shift "count" bits of "data" out to the EEPROM
1483 * one bit at a time. Determine the starting bit based on count
1485 mask = 0x01 << (count - 1);
1487 for (i = 0; i < count; i++) {
1489 * A "1" is shifted out to the EEPROM by setting bit "DI" to a
1490 * "1", and then raising and then lowering the clock (the SK
1491 * bit controls the clock input to the EEPROM). A "0" is
1492 * shifted out to the EEPROM by setting "DI" to "0" and then
1493 * raising and then lowering the clock.
1496 eec |= IXGBE_EEC_DI;
1498 eec &= ~IXGBE_EEC_DI;
1500 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1501 IXGBE_WRITE_FLUSH(hw);
1505 ixgbe_raise_eeprom_clk(hw, &eec);
1506 ixgbe_lower_eeprom_clk(hw, &eec);
1509 * Shift mask to signify next bit of data to shift in to the
1515 /* We leave the "DI" bit set to "0" when we leave this routine. */
1516 eec &= ~IXGBE_EEC_DI;
1517 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1518 IXGBE_WRITE_FLUSH(hw);
1522 * ixgbe_shift_in_eeprom_bits - Shift data bits in from the EEPROM
1523 * @hw: pointer to hardware structure
1525 static u16 ixgbe_shift_in_eeprom_bits(struct ixgbe_hw *hw, u16 count)
1532 * In order to read a register from the EEPROM, we need to shift
1533 * 'count' bits in from the EEPROM. Bits are "shifted in" by raising
1534 * the clock input to the EEPROM (setting the SK bit), and then reading
1535 * the value of the "DO" bit. During this "shifting in" process the
1536 * "DI" bit should always be clear.
1538 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1540 eec &= ~(IXGBE_EEC_DO | IXGBE_EEC_DI);
1542 for (i = 0; i < count; i++) {
1544 ixgbe_raise_eeprom_clk(hw, &eec);
1546 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1548 eec &= ~(IXGBE_EEC_DI);
1549 if (eec & IXGBE_EEC_DO)
1552 ixgbe_lower_eeprom_clk(hw, &eec);
1559 * ixgbe_raise_eeprom_clk - Raises the EEPROM's clock input.
1560 * @hw: pointer to hardware structure
1561 * @eec: EEC register's current value
1563 static void ixgbe_raise_eeprom_clk(struct ixgbe_hw *hw, u32 *eec)
1566 * Raise the clock input to the EEPROM
1567 * (setting the SK bit), then delay
1569 *eec = *eec | IXGBE_EEC_SK;
1570 IXGBE_WRITE_REG(hw, IXGBE_EEC, *eec);
1571 IXGBE_WRITE_FLUSH(hw);
1576 * ixgbe_lower_eeprom_clk - Lowers the EEPROM's clock input.
1577 * @hw: pointer to hardware structure
1578 * @eecd: EECD's current value
1580 static void ixgbe_lower_eeprom_clk(struct ixgbe_hw *hw, u32 *eec)
1583 * Lower the clock input to the EEPROM (clearing the SK bit), then
1586 *eec = *eec & ~IXGBE_EEC_SK;
1587 IXGBE_WRITE_REG(hw, IXGBE_EEC, *eec);
1588 IXGBE_WRITE_FLUSH(hw);
1593 * ixgbe_release_eeprom - Release EEPROM, release semaphores
1594 * @hw: pointer to hardware structure
1596 static void ixgbe_release_eeprom(struct ixgbe_hw *hw)
1600 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1602 eec |= IXGBE_EEC_CS; /* Pull CS high */
1603 eec &= ~IXGBE_EEC_SK; /* Lower SCK */
1605 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1606 IXGBE_WRITE_FLUSH(hw);
1610 /* Stop requesting EEPROM access */
1611 eec &= ~IXGBE_EEC_REQ;
1612 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1614 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
1617 * Delay before attempt to obtain semaphore again to allow FW
1618 * access. semaphore_delay is in ms we need us for usleep_range
1620 usleep_range(hw->eeprom.semaphore_delay * 1000,
1621 hw->eeprom.semaphore_delay * 2000);
1625 * ixgbe_calc_eeprom_checksum_generic - Calculates and returns the checksum
1626 * @hw: pointer to hardware structure
1628 s32 ixgbe_calc_eeprom_checksum_generic(struct ixgbe_hw *hw)
1637 /* Include 0x0-0x3F in the checksum */
1638 for (i = 0; i < IXGBE_EEPROM_CHECKSUM; i++) {
1639 if (hw->eeprom.ops.read(hw, i, &word)) {
1640 hw_dbg(hw, "EEPROM read failed\n");
1646 /* Include all data from pointers except for the fw pointer */
1647 for (i = IXGBE_PCIE_ANALOG_PTR; i < IXGBE_FW_PTR; i++) {
1648 if (hw->eeprom.ops.read(hw, i, &pointer)) {
1649 hw_dbg(hw, "EEPROM read failed\n");
1650 return IXGBE_ERR_EEPROM;
1653 /* If the pointer seems invalid */
1654 if (pointer == 0xFFFF || pointer == 0)
1657 if (hw->eeprom.ops.read(hw, pointer, &length)) {
1658 hw_dbg(hw, "EEPROM read failed\n");
1659 return IXGBE_ERR_EEPROM;
1662 if (length == 0xFFFF || length == 0)
1665 for (j = pointer + 1; j <= pointer + length; j++) {
1666 if (hw->eeprom.ops.read(hw, j, &word)) {
1667 hw_dbg(hw, "EEPROM read failed\n");
1668 return IXGBE_ERR_EEPROM;
1674 checksum = (u16)IXGBE_EEPROM_SUM - checksum;
1676 return (s32)checksum;
1680 * ixgbe_validate_eeprom_checksum_generic - Validate EEPROM checksum
1681 * @hw: pointer to hardware structure
1682 * @checksum_val: calculated checksum
1684 * Performs checksum calculation and validates the EEPROM checksum. If the
1685 * caller does not need checksum_val, the value can be NULL.
1687 s32 ixgbe_validate_eeprom_checksum_generic(struct ixgbe_hw *hw,
1692 u16 read_checksum = 0;
1695 * Read the first word from the EEPROM. If this times out or fails, do
1696 * not continue or we could be in for a very long wait while every
1699 status = hw->eeprom.ops.read(hw, 0, &checksum);
1701 hw_dbg(hw, "EEPROM read failed\n");
1705 status = hw->eeprom.ops.calc_checksum(hw);
1709 checksum = (u16)(status & 0xffff);
1711 status = hw->eeprom.ops.read(hw, IXGBE_EEPROM_CHECKSUM, &read_checksum);
1713 hw_dbg(hw, "EEPROM read failed\n");
1717 /* Verify read checksum from EEPROM is the same as
1718 * calculated checksum
1720 if (read_checksum != checksum)
1721 status = IXGBE_ERR_EEPROM_CHECKSUM;
1723 /* If the user cares, return the calculated checksum */
1725 *checksum_val = checksum;
1731 * ixgbe_update_eeprom_checksum_generic - Updates the EEPROM checksum
1732 * @hw: pointer to hardware structure
1734 s32 ixgbe_update_eeprom_checksum_generic(struct ixgbe_hw *hw)
1740 * Read the first word from the EEPROM. If this times out or fails, do
1741 * not continue or we could be in for a very long wait while every
1744 status = hw->eeprom.ops.read(hw, 0, &checksum);
1746 hw_dbg(hw, "EEPROM read failed\n");
1750 status = hw->eeprom.ops.calc_checksum(hw);
1754 checksum = (u16)(status & 0xffff);
1756 status = hw->eeprom.ops.write(hw, IXGBE_EEPROM_CHECKSUM, checksum);
1762 * ixgbe_set_rar_generic - Set Rx address register
1763 * @hw: pointer to hardware structure
1764 * @index: Receive address register to write
1765 * @addr: Address to put into receive address register
1766 * @vmdq: VMDq "set" or "pool" index
1767 * @enable_addr: set flag that address is active
1769 * Puts an ethernet address into a receive address register.
1771 s32 ixgbe_set_rar_generic(struct ixgbe_hw *hw, u32 index, u8 *addr, u32 vmdq,
1774 u32 rar_low, rar_high;
1775 u32 rar_entries = hw->mac.num_rar_entries;
1777 /* Make sure we are using a valid rar index range */
1778 if (index >= rar_entries) {
1779 hw_dbg(hw, "RAR index %d is out of range.\n", index);
1780 return IXGBE_ERR_INVALID_ARGUMENT;
1783 /* setup VMDq pool selection before this RAR gets enabled */
1784 hw->mac.ops.set_vmdq(hw, index, vmdq);
1787 * HW expects these in little endian so we reverse the byte
1788 * order from network order (big endian) to little endian
1790 rar_low = ((u32)addr[0] |
1791 ((u32)addr[1] << 8) |
1792 ((u32)addr[2] << 16) |
1793 ((u32)addr[3] << 24));
1795 * Some parts put the VMDq setting in the extra RAH bits,
1796 * so save everything except the lower 16 bits that hold part
1797 * of the address and the address valid bit.
1799 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index));
1800 rar_high &= ~(0x0000FFFF | IXGBE_RAH_AV);
1801 rar_high |= ((u32)addr[4] | ((u32)addr[5] << 8));
1803 if (enable_addr != 0)
1804 rar_high |= IXGBE_RAH_AV;
1806 IXGBE_WRITE_REG(hw, IXGBE_RAL(index), rar_low);
1807 IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high);
1813 * ixgbe_clear_rar_generic - Remove Rx address register
1814 * @hw: pointer to hardware structure
1815 * @index: Receive address register to write
1817 * Clears an ethernet address from a receive address register.
1819 s32 ixgbe_clear_rar_generic(struct ixgbe_hw *hw, u32 index)
1822 u32 rar_entries = hw->mac.num_rar_entries;
1824 /* Make sure we are using a valid rar index range */
1825 if (index >= rar_entries) {
1826 hw_dbg(hw, "RAR index %d is out of range.\n", index);
1827 return IXGBE_ERR_INVALID_ARGUMENT;
1831 * Some parts put the VMDq setting in the extra RAH bits,
1832 * so save everything except the lower 16 bits that hold part
1833 * of the address and the address valid bit.
1835 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index));
1836 rar_high &= ~(0x0000FFFF | IXGBE_RAH_AV);
1838 IXGBE_WRITE_REG(hw, IXGBE_RAL(index), 0);
1839 IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high);
1841 /* clear VMDq pool/queue selection for this RAR */
1842 hw->mac.ops.clear_vmdq(hw, index, IXGBE_CLEAR_VMDQ_ALL);
1848 * ixgbe_init_rx_addrs_generic - Initializes receive address filters.
1849 * @hw: pointer to hardware structure
1851 * Places the MAC address in receive address register 0 and clears the rest
1852 * of the receive address registers. Clears the multicast table. Assumes
1853 * the receiver is in reset when the routine is called.
1855 s32 ixgbe_init_rx_addrs_generic(struct ixgbe_hw *hw)
1858 u32 rar_entries = hw->mac.num_rar_entries;
1861 * If the current mac address is valid, assume it is a software override
1862 * to the permanent address.
1863 * Otherwise, use the permanent address from the eeprom.
1865 if (!is_valid_ether_addr(hw->mac.addr)) {
1866 /* Get the MAC address from the RAR0 for later reference */
1867 hw->mac.ops.get_mac_addr(hw, hw->mac.addr);
1869 hw_dbg(hw, " Keeping Current RAR0 Addr =%pM\n", hw->mac.addr);
1871 /* Setup the receive address. */
1872 hw_dbg(hw, "Overriding MAC Address in RAR[0]\n");
1873 hw_dbg(hw, " New MAC Addr =%pM\n", hw->mac.addr);
1875 hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0, IXGBE_RAH_AV);
1877 /* clear VMDq pool/queue selection for RAR 0 */
1878 hw->mac.ops.clear_vmdq(hw, 0, IXGBE_CLEAR_VMDQ_ALL);
1880 hw->addr_ctrl.overflow_promisc = 0;
1882 hw->addr_ctrl.rar_used_count = 1;
1884 /* Zero out the other receive addresses. */
1885 hw_dbg(hw, "Clearing RAR[1-%d]\n", rar_entries - 1);
1886 for (i = 1; i < rar_entries; i++) {
1887 IXGBE_WRITE_REG(hw, IXGBE_RAL(i), 0);
1888 IXGBE_WRITE_REG(hw, IXGBE_RAH(i), 0);
1892 hw->addr_ctrl.mta_in_use = 0;
1893 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, hw->mac.mc_filter_type);
1895 hw_dbg(hw, " Clearing MTA\n");
1896 for (i = 0; i < hw->mac.mcft_size; i++)
1897 IXGBE_WRITE_REG(hw, IXGBE_MTA(i), 0);
1899 if (hw->mac.ops.init_uta_tables)
1900 hw->mac.ops.init_uta_tables(hw);
1906 * ixgbe_mta_vector - Determines bit-vector in multicast table to set
1907 * @hw: pointer to hardware structure
1908 * @mc_addr: the multicast address
1910 * Extracts the 12 bits, from a multicast address, to determine which
1911 * bit-vector to set in the multicast table. The hardware uses 12 bits, from
1912 * incoming rx multicast addresses, to determine the bit-vector to check in
1913 * the MTA. Which of the 4 combination, of 12-bits, the hardware uses is set
1914 * by the MO field of the MCSTCTRL. The MO field is set during initialization
1915 * to mc_filter_type.
1917 static s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr)
1921 switch (hw->mac.mc_filter_type) {
1922 case 0: /* use bits [47:36] of the address */
1923 vector = ((mc_addr[4] >> 4) | (((u16)mc_addr[5]) << 4));
1925 case 1: /* use bits [46:35] of the address */
1926 vector = ((mc_addr[4] >> 3) | (((u16)mc_addr[5]) << 5));
1928 case 2: /* use bits [45:34] of the address */
1929 vector = ((mc_addr[4] >> 2) | (((u16)mc_addr[5]) << 6));
1931 case 3: /* use bits [43:32] of the address */
1932 vector = ((mc_addr[4]) | (((u16)mc_addr[5]) << 8));
1934 default: /* Invalid mc_filter_type */
1935 hw_dbg(hw, "MC filter type param set incorrectly\n");
1939 /* vector can only be 12-bits or boundary will be exceeded */
1945 * ixgbe_set_mta - Set bit-vector in multicast table
1946 * @hw: pointer to hardware structure
1947 * @hash_value: Multicast address hash value
1949 * Sets the bit-vector in the multicast table.
1951 static void ixgbe_set_mta(struct ixgbe_hw *hw, u8 *mc_addr)
1957 hw->addr_ctrl.mta_in_use++;
1959 vector = ixgbe_mta_vector(hw, mc_addr);
1960 hw_dbg(hw, " bit-vector = 0x%03X\n", vector);
1963 * The MTA is a register array of 128 32-bit registers. It is treated
1964 * like an array of 4096 bits. We want to set bit
1965 * BitArray[vector_value]. So we figure out what register the bit is
1966 * in, read it, OR in the new bit, then write back the new value. The
1967 * register is determined by the upper 7 bits of the vector value and
1968 * the bit within that register are determined by the lower 5 bits of
1971 vector_reg = (vector >> 5) & 0x7F;
1972 vector_bit = vector & 0x1F;
1973 hw->mac.mta_shadow[vector_reg] |= (1 << vector_bit);
1977 * ixgbe_update_mc_addr_list_generic - Updates MAC list of multicast addresses
1978 * @hw: pointer to hardware structure
1979 * @netdev: pointer to net device structure
1981 * The given list replaces any existing list. Clears the MC addrs from receive
1982 * address registers and the multicast table. Uses unused receive address
1983 * registers for the first multicast addresses, and hashes the rest into the
1986 s32 ixgbe_update_mc_addr_list_generic(struct ixgbe_hw *hw,
1987 struct net_device *netdev)
1989 struct netdev_hw_addr *ha;
1993 * Set the new number of MC addresses that we are being requested to
1996 hw->addr_ctrl.num_mc_addrs = netdev_mc_count(netdev);
1997 hw->addr_ctrl.mta_in_use = 0;
1999 /* Clear mta_shadow */
2000 hw_dbg(hw, " Clearing MTA\n");
2001 memset(&hw->mac.mta_shadow, 0, sizeof(hw->mac.mta_shadow));
2003 /* Update mta shadow */
2004 netdev_for_each_mc_addr(ha, netdev) {
2005 hw_dbg(hw, " Adding the multicast addresses:\n");
2006 ixgbe_set_mta(hw, ha->addr);
2010 for (i = 0; i < hw->mac.mcft_size; i++)
2011 IXGBE_WRITE_REG_ARRAY(hw, IXGBE_MTA(0), i,
2012 hw->mac.mta_shadow[i]);
2014 if (hw->addr_ctrl.mta_in_use > 0)
2015 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL,
2016 IXGBE_MCSTCTRL_MFE | hw->mac.mc_filter_type);
2018 hw_dbg(hw, "ixgbe_update_mc_addr_list_generic Complete\n");
2023 * ixgbe_enable_mc_generic - Enable multicast address in RAR
2024 * @hw: pointer to hardware structure
2026 * Enables multicast address in RAR and the use of the multicast hash table.
2028 s32 ixgbe_enable_mc_generic(struct ixgbe_hw *hw)
2030 struct ixgbe_addr_filter_info *a = &hw->addr_ctrl;
2032 if (a->mta_in_use > 0)
2033 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, IXGBE_MCSTCTRL_MFE |
2034 hw->mac.mc_filter_type);
2040 * ixgbe_disable_mc_generic - Disable multicast address in RAR
2041 * @hw: pointer to hardware structure
2043 * Disables multicast address in RAR and the use of the multicast hash table.
2045 s32 ixgbe_disable_mc_generic(struct ixgbe_hw *hw)
2047 struct ixgbe_addr_filter_info *a = &hw->addr_ctrl;
2049 if (a->mta_in_use > 0)
2050 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, hw->mac.mc_filter_type);
2056 * ixgbe_fc_enable_generic - Enable flow control
2057 * @hw: pointer to hardware structure
2059 * Enable flow control according to the current settings.
2061 s32 ixgbe_fc_enable_generic(struct ixgbe_hw *hw)
2063 u32 mflcn_reg, fccfg_reg;
2068 /* Validate the water mark configuration. */
2069 if (!hw->fc.pause_time)
2070 return IXGBE_ERR_INVALID_LINK_SETTINGS;
2072 /* Low water mark of zero causes XOFF floods */
2073 for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
2074 if ((hw->fc.current_mode & ixgbe_fc_tx_pause) &&
2075 hw->fc.high_water[i]) {
2076 if (!hw->fc.low_water[i] ||
2077 hw->fc.low_water[i] >= hw->fc.high_water[i]) {
2078 hw_dbg(hw, "Invalid water mark configuration\n");
2079 return IXGBE_ERR_INVALID_LINK_SETTINGS;
2084 /* Negotiate the fc mode to use */
2085 ixgbe_fc_autoneg(hw);
2087 /* Disable any previous flow control settings */
2088 mflcn_reg = IXGBE_READ_REG(hw, IXGBE_MFLCN);
2089 mflcn_reg &= ~(IXGBE_MFLCN_RPFCE_MASK | IXGBE_MFLCN_RFCE);
2091 fccfg_reg = IXGBE_READ_REG(hw, IXGBE_FCCFG);
2092 fccfg_reg &= ~(IXGBE_FCCFG_TFCE_802_3X | IXGBE_FCCFG_TFCE_PRIORITY);
2095 * The possible values of fc.current_mode are:
2096 * 0: Flow control is completely disabled
2097 * 1: Rx flow control is enabled (we can receive pause frames,
2098 * but not send pause frames).
2099 * 2: Tx flow control is enabled (we can send pause frames but
2100 * we do not support receiving pause frames).
2101 * 3: Both Rx and Tx flow control (symmetric) are enabled.
2104 switch (hw->fc.current_mode) {
2107 * Flow control is disabled by software override or autoneg.
2108 * The code below will actually disable it in the HW.
2111 case ixgbe_fc_rx_pause:
2113 * Rx Flow control is enabled and Tx Flow control is
2114 * disabled by software override. Since there really
2115 * isn't a way to advertise that we are capable of RX
2116 * Pause ONLY, we will advertise that we support both
2117 * symmetric and asymmetric Rx PAUSE. Later, we will
2118 * disable the adapter's ability to send PAUSE frames.
2120 mflcn_reg |= IXGBE_MFLCN_RFCE;
2122 case ixgbe_fc_tx_pause:
2124 * Tx Flow control is enabled, and Rx Flow control is
2125 * disabled by software override.
2127 fccfg_reg |= IXGBE_FCCFG_TFCE_802_3X;
2130 /* Flow control (both Rx and Tx) is enabled by SW override. */
2131 mflcn_reg |= IXGBE_MFLCN_RFCE;
2132 fccfg_reg |= IXGBE_FCCFG_TFCE_802_3X;
2135 hw_dbg(hw, "Flow control param set incorrectly\n");
2136 return IXGBE_ERR_CONFIG;
2139 /* Set 802.3x based flow control settings. */
2140 mflcn_reg |= IXGBE_MFLCN_DPF;
2141 IXGBE_WRITE_REG(hw, IXGBE_MFLCN, mflcn_reg);
2142 IXGBE_WRITE_REG(hw, IXGBE_FCCFG, fccfg_reg);
2144 /* Set up and enable Rx high/low water mark thresholds, enable XON. */
2145 for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
2146 if ((hw->fc.current_mode & ixgbe_fc_tx_pause) &&
2147 hw->fc.high_water[i]) {
2148 fcrtl = (hw->fc.low_water[i] << 10) | IXGBE_FCRTL_XONE;
2149 IXGBE_WRITE_REG(hw, IXGBE_FCRTL_82599(i), fcrtl);
2150 fcrth = (hw->fc.high_water[i] << 10) | IXGBE_FCRTH_FCEN;
2152 IXGBE_WRITE_REG(hw, IXGBE_FCRTL_82599(i), 0);
2154 * In order to prevent Tx hangs when the internal Tx
2155 * switch is enabled we must set the high water mark
2156 * to the maximum FCRTH value. This allows the Tx
2157 * switch to function even under heavy Rx workloads.
2159 fcrth = IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(i)) - 32;
2162 IXGBE_WRITE_REG(hw, IXGBE_FCRTH_82599(i), fcrth);
2165 /* Configure pause time (2 TCs per register) */
2166 reg = hw->fc.pause_time * 0x00010001;
2167 for (i = 0; i < (MAX_TRAFFIC_CLASS / 2); i++)
2168 IXGBE_WRITE_REG(hw, IXGBE_FCTTV(i), reg);
2170 IXGBE_WRITE_REG(hw, IXGBE_FCRTV, hw->fc.pause_time / 2);
2176 * ixgbe_negotiate_fc - Negotiate flow control
2177 * @hw: pointer to hardware structure
2178 * @adv_reg: flow control advertised settings
2179 * @lp_reg: link partner's flow control settings
2180 * @adv_sym: symmetric pause bit in advertisement
2181 * @adv_asm: asymmetric pause bit in advertisement
2182 * @lp_sym: symmetric pause bit in link partner advertisement
2183 * @lp_asm: asymmetric pause bit in link partner advertisement
2185 * Find the intersection between advertised settings and link partner's
2186 * advertised settings
2188 static s32 ixgbe_negotiate_fc(struct ixgbe_hw *hw, u32 adv_reg, u32 lp_reg,
2189 u32 adv_sym, u32 adv_asm, u32 lp_sym, u32 lp_asm)
2191 if ((!(adv_reg)) || (!(lp_reg)))
2192 return IXGBE_ERR_FC_NOT_NEGOTIATED;
2194 if ((adv_reg & adv_sym) && (lp_reg & lp_sym)) {
2196 * Now we need to check if the user selected Rx ONLY
2197 * of pause frames. In this case, we had to advertise
2198 * FULL flow control because we could not advertise RX
2199 * ONLY. Hence, we must now check to see if we need to
2200 * turn OFF the TRANSMISSION of PAUSE frames.
2202 if (hw->fc.requested_mode == ixgbe_fc_full) {
2203 hw->fc.current_mode = ixgbe_fc_full;
2204 hw_dbg(hw, "Flow Control = FULL.\n");
2206 hw->fc.current_mode = ixgbe_fc_rx_pause;
2207 hw_dbg(hw, "Flow Control=RX PAUSE frames only\n");
2209 } else if (!(adv_reg & adv_sym) && (adv_reg & adv_asm) &&
2210 (lp_reg & lp_sym) && (lp_reg & lp_asm)) {
2211 hw->fc.current_mode = ixgbe_fc_tx_pause;
2212 hw_dbg(hw, "Flow Control = TX PAUSE frames only.\n");
2213 } else if ((adv_reg & adv_sym) && (adv_reg & adv_asm) &&
2214 !(lp_reg & lp_sym) && (lp_reg & lp_asm)) {
2215 hw->fc.current_mode = ixgbe_fc_rx_pause;
2216 hw_dbg(hw, "Flow Control = RX PAUSE frames only.\n");
2218 hw->fc.current_mode = ixgbe_fc_none;
2219 hw_dbg(hw, "Flow Control = NONE.\n");
2225 * ixgbe_fc_autoneg_fiber - Enable flow control on 1 gig fiber
2226 * @hw: pointer to hardware structure
2228 * Enable flow control according on 1 gig fiber.
2230 static s32 ixgbe_fc_autoneg_fiber(struct ixgbe_hw *hw)
2232 u32 pcs_anadv_reg, pcs_lpab_reg, linkstat;
2236 * On multispeed fiber at 1g, bail out if
2237 * - link is up but AN did not complete, or if
2238 * - link is up and AN completed but timed out
2241 linkstat = IXGBE_READ_REG(hw, IXGBE_PCS1GLSTA);
2242 if ((!!(linkstat & IXGBE_PCS1GLSTA_AN_COMPLETE) == 0) ||
2243 (!!(linkstat & IXGBE_PCS1GLSTA_AN_TIMED_OUT) == 1))
2244 return IXGBE_ERR_FC_NOT_NEGOTIATED;
2246 pcs_anadv_reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANA);
2247 pcs_lpab_reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANLP);
2249 ret_val = ixgbe_negotiate_fc(hw, pcs_anadv_reg,
2250 pcs_lpab_reg, IXGBE_PCS1GANA_SYM_PAUSE,
2251 IXGBE_PCS1GANA_ASM_PAUSE,
2252 IXGBE_PCS1GANA_SYM_PAUSE,
2253 IXGBE_PCS1GANA_ASM_PAUSE);
2259 * ixgbe_fc_autoneg_backplane - Enable flow control IEEE clause 37
2260 * @hw: pointer to hardware structure
2262 * Enable flow control according to IEEE clause 37.
2264 static s32 ixgbe_fc_autoneg_backplane(struct ixgbe_hw *hw)
2266 u32 links2, anlp1_reg, autoc_reg, links;
2270 * On backplane, bail out if
2271 * - backplane autoneg was not completed, or if
2272 * - we are 82599 and link partner is not AN enabled
2274 links = IXGBE_READ_REG(hw, IXGBE_LINKS);
2275 if ((links & IXGBE_LINKS_KX_AN_COMP) == 0)
2276 return IXGBE_ERR_FC_NOT_NEGOTIATED;
2278 if (hw->mac.type == ixgbe_mac_82599EB) {
2279 links2 = IXGBE_READ_REG(hw, IXGBE_LINKS2);
2280 if ((links2 & IXGBE_LINKS2_AN_SUPPORTED) == 0)
2281 return IXGBE_ERR_FC_NOT_NEGOTIATED;
2284 * Read the 10g AN autoc and LP ability registers and resolve
2285 * local flow control settings accordingly
2287 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
2288 anlp1_reg = IXGBE_READ_REG(hw, IXGBE_ANLP1);
2290 ret_val = ixgbe_negotiate_fc(hw, autoc_reg,
2291 anlp1_reg, IXGBE_AUTOC_SYM_PAUSE, IXGBE_AUTOC_ASM_PAUSE,
2292 IXGBE_ANLP1_SYM_PAUSE, IXGBE_ANLP1_ASM_PAUSE);
2298 * ixgbe_fc_autoneg_copper - Enable flow control IEEE clause 37
2299 * @hw: pointer to hardware structure
2301 * Enable flow control according to IEEE clause 37.
2303 static s32 ixgbe_fc_autoneg_copper(struct ixgbe_hw *hw)
2305 u16 technology_ability_reg = 0;
2306 u16 lp_technology_ability_reg = 0;
2308 hw->phy.ops.read_reg(hw, MDIO_AN_ADVERTISE,
2310 &technology_ability_reg);
2311 hw->phy.ops.read_reg(hw, MDIO_AN_LPA,
2313 &lp_technology_ability_reg);
2315 return ixgbe_negotiate_fc(hw, (u32)technology_ability_reg,
2316 (u32)lp_technology_ability_reg,
2317 IXGBE_TAF_SYM_PAUSE, IXGBE_TAF_ASM_PAUSE,
2318 IXGBE_TAF_SYM_PAUSE, IXGBE_TAF_ASM_PAUSE);
2322 * ixgbe_fc_autoneg - Configure flow control
2323 * @hw: pointer to hardware structure
2325 * Compares our advertised flow control capabilities to those advertised by
2326 * our link partner, and determines the proper flow control mode to use.
2328 void ixgbe_fc_autoneg(struct ixgbe_hw *hw)
2330 s32 ret_val = IXGBE_ERR_FC_NOT_NEGOTIATED;
2331 ixgbe_link_speed speed;
2335 * AN should have completed when the cable was plugged in.
2336 * Look for reasons to bail out. Bail out if:
2337 * - FC autoneg is disabled, or if
2340 * Since we're being called from an LSC, link is already known to be up.
2341 * So use link_up_wait_to_complete=false.
2343 if (hw->fc.disable_fc_autoneg)
2346 hw->mac.ops.check_link(hw, &speed, &link_up, false);
2350 switch (hw->phy.media_type) {
2351 /* Autoneg flow control on fiber adapters */
2352 case ixgbe_media_type_fiber:
2353 if (speed == IXGBE_LINK_SPEED_1GB_FULL)
2354 ret_val = ixgbe_fc_autoneg_fiber(hw);
2357 /* Autoneg flow control on backplane adapters */
2358 case ixgbe_media_type_backplane:
2359 ret_val = ixgbe_fc_autoneg_backplane(hw);
2362 /* Autoneg flow control on copper adapters */
2363 case ixgbe_media_type_copper:
2364 if (ixgbe_device_supports_autoneg_fc(hw))
2365 ret_val = ixgbe_fc_autoneg_copper(hw);
2374 hw->fc.fc_was_autonegged = true;
2376 hw->fc.fc_was_autonegged = false;
2377 hw->fc.current_mode = hw->fc.requested_mode;
2382 * ixgbe_pcie_timeout_poll - Return number of times to poll for completion
2383 * @hw: pointer to hardware structure
2385 * System-wide timeout range is encoded in PCIe Device Control2 register.
2387 * Add 10% to specified maximum and return the number of times to poll for
2388 * completion timeout, in units of 100 microsec. Never return less than
2389 * 800 = 80 millisec.
2391 static u32 ixgbe_pcie_timeout_poll(struct ixgbe_hw *hw)
2396 devctl2 = ixgbe_read_pci_cfg_word(hw, IXGBE_PCI_DEVICE_CONTROL2);
2397 devctl2 &= IXGBE_PCIDEVCTRL2_TIMEO_MASK;
2400 case IXGBE_PCIDEVCTRL2_65_130ms:
2401 pollcnt = 1300; /* 130 millisec */
2403 case IXGBE_PCIDEVCTRL2_260_520ms:
2404 pollcnt = 5200; /* 520 millisec */
2406 case IXGBE_PCIDEVCTRL2_1_2s:
2407 pollcnt = 20000; /* 2 sec */
2409 case IXGBE_PCIDEVCTRL2_4_8s:
2410 pollcnt = 80000; /* 8 sec */
2412 case IXGBE_PCIDEVCTRL2_17_34s:
2413 pollcnt = 34000; /* 34 sec */
2415 case IXGBE_PCIDEVCTRL2_50_100us: /* 100 microsecs */
2416 case IXGBE_PCIDEVCTRL2_1_2ms: /* 2 millisecs */
2417 case IXGBE_PCIDEVCTRL2_16_32ms: /* 32 millisec */
2418 case IXGBE_PCIDEVCTRL2_16_32ms_def: /* 32 millisec default */
2420 pollcnt = 800; /* 80 millisec minimum */
2424 /* add 10% to spec maximum */
2425 return (pollcnt * 11) / 10;
2429 * ixgbe_disable_pcie_master - Disable PCI-express master access
2430 * @hw: pointer to hardware structure
2432 * Disables PCI-Express master access and verifies there are no pending
2433 * requests. IXGBE_ERR_MASTER_REQUESTS_PENDING is returned if master disable
2434 * bit hasn't caused the master requests to be disabled, else 0
2435 * is returned signifying master requests disabled.
2437 static s32 ixgbe_disable_pcie_master(struct ixgbe_hw *hw)
2442 /* Always set this bit to ensure any future transactions are blocked */
2443 IXGBE_WRITE_REG(hw, IXGBE_CTRL, IXGBE_CTRL_GIO_DIS);
2445 /* Exit if master requests are blocked */
2446 if (!(IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_GIO) ||
2447 ixgbe_removed(hw->hw_addr))
2450 /* Poll for master request bit to clear */
2451 for (i = 0; i < IXGBE_PCI_MASTER_DISABLE_TIMEOUT; i++) {
2453 if (!(IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_GIO))
2458 * Two consecutive resets are required via CTRL.RST per datasheet
2459 * 5.2.5.3.2 Master Disable. We set a flag to inform the reset routine
2460 * of this need. The first reset prevents new master requests from
2461 * being issued by our device. We then must wait 1usec or more for any
2462 * remaining completions from the PCIe bus to trickle in, and then reset
2463 * again to clear out any effects they may have had on our device.
2465 hw_dbg(hw, "GIO Master Disable bit didn't clear - requesting resets\n");
2466 hw->mac.flags |= IXGBE_FLAGS_DOUBLE_RESET_REQUIRED;
2469 * Before proceeding, make sure that the PCIe block does not have
2470 * transactions pending.
2472 poll = ixgbe_pcie_timeout_poll(hw);
2473 for (i = 0; i < poll; i++) {
2475 value = ixgbe_read_pci_cfg_word(hw, IXGBE_PCI_DEVICE_STATUS);
2476 if (ixgbe_removed(hw->hw_addr))
2478 if (!(value & IXGBE_PCI_DEVICE_STATUS_TRANSACTION_PENDING))
2482 hw_dbg(hw, "PCIe transaction pending bit also did not clear.\n");
2483 return IXGBE_ERR_MASTER_REQUESTS_PENDING;
2487 * ixgbe_acquire_swfw_sync - Acquire SWFW semaphore
2488 * @hw: pointer to hardware structure
2489 * @mask: Mask to specify which semaphore to acquire
2491 * Acquires the SWFW semaphore through the GSSR register for the specified
2492 * function (CSR, PHY0, PHY1, EEPROM, Flash)
2494 s32 ixgbe_acquire_swfw_sync(struct ixgbe_hw *hw, u32 mask)
2498 u32 fwmask = mask << 5;
2502 for (i = 0; i < timeout; i++) {
2504 * SW NVM semaphore bit is used for access to all
2505 * SW_FW_SYNC bits (not just NVM)
2507 if (ixgbe_get_eeprom_semaphore(hw))
2508 return IXGBE_ERR_SWFW_SYNC;
2510 gssr = IXGBE_READ_REG(hw, IXGBE_GSSR);
2511 if (!(gssr & (fwmask | swmask))) {
2513 IXGBE_WRITE_REG(hw, IXGBE_GSSR, gssr);
2514 ixgbe_release_eeprom_semaphore(hw);
2517 /* Resource is currently in use by FW or SW */
2518 ixgbe_release_eeprom_semaphore(hw);
2519 usleep_range(5000, 10000);
2523 /* If time expired clear the bits holding the lock and retry */
2524 if (gssr & (fwmask | swmask))
2525 ixgbe_release_swfw_sync(hw, gssr & (fwmask | swmask));
2527 usleep_range(5000, 10000);
2528 return IXGBE_ERR_SWFW_SYNC;
2532 * ixgbe_release_swfw_sync - Release SWFW semaphore
2533 * @hw: pointer to hardware structure
2534 * @mask: Mask to specify which semaphore to release
2536 * Releases the SWFW semaphore through the GSSR register for the specified
2537 * function (CSR, PHY0, PHY1, EEPROM, Flash)
2539 void ixgbe_release_swfw_sync(struct ixgbe_hw *hw, u32 mask)
2544 ixgbe_get_eeprom_semaphore(hw);
2546 gssr = IXGBE_READ_REG(hw, IXGBE_GSSR);
2548 IXGBE_WRITE_REG(hw, IXGBE_GSSR, gssr);
2550 ixgbe_release_eeprom_semaphore(hw);
2554 * prot_autoc_read_generic - Hides MAC differences needed for AUTOC read
2555 * @hw: pointer to hardware structure
2556 * @reg_val: Value we read from AUTOC
2557 * @locked: bool to indicate whether the SW/FW lock should be taken. Never
2558 * true in this the generic case.
2560 * The default case requires no protection so just to the register read.
2562 s32 prot_autoc_read_generic(struct ixgbe_hw *hw, bool *locked, u32 *reg_val)
2565 *reg_val = IXGBE_READ_REG(hw, IXGBE_AUTOC);
2570 * prot_autoc_write_generic - Hides MAC differences needed for AUTOC write
2571 * @hw: pointer to hardware structure
2572 * @reg_val: value to write to AUTOC
2573 * @locked: bool to indicate whether the SW/FW lock was already taken by
2576 s32 prot_autoc_write_generic(struct ixgbe_hw *hw, u32 reg_val, bool locked)
2578 IXGBE_WRITE_REG(hw, IXGBE_AUTOC, reg_val);
2583 * ixgbe_disable_rx_buff_generic - Stops the receive data path
2584 * @hw: pointer to hardware structure
2586 * Stops the receive data path and waits for the HW to internally
2587 * empty the Rx security block.
2589 s32 ixgbe_disable_rx_buff_generic(struct ixgbe_hw *hw)
2591 #define IXGBE_MAX_SECRX_POLL 40
2595 secrxreg = IXGBE_READ_REG(hw, IXGBE_SECRXCTRL);
2596 secrxreg |= IXGBE_SECRXCTRL_RX_DIS;
2597 IXGBE_WRITE_REG(hw, IXGBE_SECRXCTRL, secrxreg);
2598 for (i = 0; i < IXGBE_MAX_SECRX_POLL; i++) {
2599 secrxreg = IXGBE_READ_REG(hw, IXGBE_SECRXSTAT);
2600 if (secrxreg & IXGBE_SECRXSTAT_SECRX_RDY)
2603 /* Use interrupt-safe sleep just in case */
2607 /* For informational purposes only */
2608 if (i >= IXGBE_MAX_SECRX_POLL)
2609 hw_dbg(hw, "Rx unit being enabled before security path fully disabled. Continuing with init.\n");
2616 * ixgbe_enable_rx_buff - Enables the receive data path
2617 * @hw: pointer to hardware structure
2619 * Enables the receive data path
2621 s32 ixgbe_enable_rx_buff_generic(struct ixgbe_hw *hw)
2625 secrxreg = IXGBE_READ_REG(hw, IXGBE_SECRXCTRL);
2626 secrxreg &= ~IXGBE_SECRXCTRL_RX_DIS;
2627 IXGBE_WRITE_REG(hw, IXGBE_SECRXCTRL, secrxreg);
2628 IXGBE_WRITE_FLUSH(hw);
2634 * ixgbe_enable_rx_dma_generic - Enable the Rx DMA unit
2635 * @hw: pointer to hardware structure
2636 * @regval: register value to write to RXCTRL
2638 * Enables the Rx DMA unit
2640 s32 ixgbe_enable_rx_dma_generic(struct ixgbe_hw *hw, u32 regval)
2642 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, regval);
2648 * ixgbe_blink_led_start_generic - Blink LED based on index.
2649 * @hw: pointer to hardware structure
2650 * @index: led number to blink
2652 s32 ixgbe_blink_led_start_generic(struct ixgbe_hw *hw, u32 index)
2654 ixgbe_link_speed speed = 0;
2655 bool link_up = false;
2656 u32 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
2657 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
2658 bool locked = false;
2662 * Link must be up to auto-blink the LEDs;
2663 * Force it if link is down.
2665 hw->mac.ops.check_link(hw, &speed, &link_up, false);
2668 ret_val = hw->mac.ops.prot_autoc_read(hw, &locked, &autoc_reg);
2672 autoc_reg |= IXGBE_AUTOC_AN_RESTART;
2673 autoc_reg |= IXGBE_AUTOC_FLU;
2675 ret_val = hw->mac.ops.prot_autoc_write(hw, autoc_reg, locked);
2679 IXGBE_WRITE_FLUSH(hw);
2681 usleep_range(10000, 20000);
2684 led_reg &= ~IXGBE_LED_MODE_MASK(index);
2685 led_reg |= IXGBE_LED_BLINK(index);
2686 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
2687 IXGBE_WRITE_FLUSH(hw);
2693 * ixgbe_blink_led_stop_generic - Stop blinking LED based on index.
2694 * @hw: pointer to hardware structure
2695 * @index: led number to stop blinking
2697 s32 ixgbe_blink_led_stop_generic(struct ixgbe_hw *hw, u32 index)
2700 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
2701 bool locked = false;
2704 ret_val = hw->mac.ops.prot_autoc_read(hw, &locked, &autoc_reg);
2708 autoc_reg &= ~IXGBE_AUTOC_FLU;
2709 autoc_reg |= IXGBE_AUTOC_AN_RESTART;
2711 ret_val = hw->mac.ops.prot_autoc_write(hw, autoc_reg, locked);
2715 led_reg &= ~IXGBE_LED_MODE_MASK(index);
2716 led_reg &= ~IXGBE_LED_BLINK(index);
2717 led_reg |= IXGBE_LED_LINK_ACTIVE << IXGBE_LED_MODE_SHIFT(index);
2718 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
2719 IXGBE_WRITE_FLUSH(hw);
2725 * ixgbe_get_san_mac_addr_offset - Get SAN MAC address offset from the EEPROM
2726 * @hw: pointer to hardware structure
2727 * @san_mac_offset: SAN MAC address offset
2729 * This function will read the EEPROM location for the SAN MAC address
2730 * pointer, and returns the value at that location. This is used in both
2731 * get and set mac_addr routines.
2733 static s32 ixgbe_get_san_mac_addr_offset(struct ixgbe_hw *hw,
2734 u16 *san_mac_offset)
2739 * First read the EEPROM pointer to see if the MAC addresses are
2742 ret_val = hw->eeprom.ops.read(hw, IXGBE_SAN_MAC_ADDR_PTR,
2745 hw_err(hw, "eeprom read at offset %d failed\n",
2746 IXGBE_SAN_MAC_ADDR_PTR);
2752 * ixgbe_get_san_mac_addr_generic - SAN MAC address retrieval from the EEPROM
2753 * @hw: pointer to hardware structure
2754 * @san_mac_addr: SAN MAC address
2756 * Reads the SAN MAC address from the EEPROM, if it's available. This is
2757 * per-port, so set_lan_id() must be called before reading the addresses.
2758 * set_lan_id() is called by identify_sfp(), but this cannot be relied
2759 * upon for non-SFP connections, so we must call it here.
2761 s32 ixgbe_get_san_mac_addr_generic(struct ixgbe_hw *hw, u8 *san_mac_addr)
2763 u16 san_mac_data, san_mac_offset;
2768 * First read the EEPROM pointer to see if the MAC addresses are
2769 * available. If they're not, no point in calling set_lan_id() here.
2771 ret_val = ixgbe_get_san_mac_addr_offset(hw, &san_mac_offset);
2772 if (ret_val || san_mac_offset == 0 || san_mac_offset == 0xFFFF)
2774 goto san_mac_addr_clr;
2776 /* make sure we know which port we need to program */
2777 hw->mac.ops.set_lan_id(hw);
2778 /* apply the port offset to the address offset */
2779 (hw->bus.func) ? (san_mac_offset += IXGBE_SAN_MAC_ADDR_PORT1_OFFSET) :
2780 (san_mac_offset += IXGBE_SAN_MAC_ADDR_PORT0_OFFSET);
2781 for (i = 0; i < 3; i++) {
2782 ret_val = hw->eeprom.ops.read(hw, san_mac_offset,
2785 hw_err(hw, "eeprom read at offset %d failed\n",
2787 goto san_mac_addr_clr;
2789 san_mac_addr[i * 2] = (u8)(san_mac_data);
2790 san_mac_addr[i * 2 + 1] = (u8)(san_mac_data >> 8);
2796 /* No addresses available in this EEPROM. It's not necessarily an
2797 * error though, so just wipe the local address and return.
2799 for (i = 0; i < 6; i++)
2800 san_mac_addr[i] = 0xFF;
2805 * ixgbe_get_pcie_msix_count_generic - Gets MSI-X vector count
2806 * @hw: pointer to hardware structure
2808 * Read PCIe configuration space, and get the MSI-X vector count from
2809 * the capabilities table.
2811 u16 ixgbe_get_pcie_msix_count_generic(struct ixgbe_hw *hw)
2817 switch (hw->mac.type) {
2818 case ixgbe_mac_82598EB:
2819 pcie_offset = IXGBE_PCIE_MSIX_82598_CAPS;
2820 max_msix_count = IXGBE_MAX_MSIX_VECTORS_82598;
2822 case ixgbe_mac_82599EB:
2823 case ixgbe_mac_X540:
2824 case ixgbe_mac_X550:
2825 case ixgbe_mac_X550EM_x:
2826 pcie_offset = IXGBE_PCIE_MSIX_82599_CAPS;
2827 max_msix_count = IXGBE_MAX_MSIX_VECTORS_82599;
2833 msix_count = ixgbe_read_pci_cfg_word(hw, pcie_offset);
2834 if (ixgbe_removed(hw->hw_addr))
2836 msix_count &= IXGBE_PCIE_MSIX_TBL_SZ_MASK;
2838 /* MSI-X count is zero-based in HW */
2841 if (msix_count > max_msix_count)
2842 msix_count = max_msix_count;
2848 * ixgbe_clear_vmdq_generic - Disassociate a VMDq pool index from a rx address
2849 * @hw: pointer to hardware struct
2850 * @rar: receive address register index to disassociate
2851 * @vmdq: VMDq pool index to remove from the rar
2853 s32 ixgbe_clear_vmdq_generic(struct ixgbe_hw *hw, u32 rar, u32 vmdq)
2855 u32 mpsar_lo, mpsar_hi;
2856 u32 rar_entries = hw->mac.num_rar_entries;
2858 /* Make sure we are using a valid rar index range */
2859 if (rar >= rar_entries) {
2860 hw_dbg(hw, "RAR index %d is out of range.\n", rar);
2861 return IXGBE_ERR_INVALID_ARGUMENT;
2864 mpsar_lo = IXGBE_READ_REG(hw, IXGBE_MPSAR_LO(rar));
2865 mpsar_hi = IXGBE_READ_REG(hw, IXGBE_MPSAR_HI(rar));
2867 if (ixgbe_removed(hw->hw_addr))
2870 if (!mpsar_lo && !mpsar_hi)
2873 if (vmdq == IXGBE_CLEAR_VMDQ_ALL) {
2875 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), 0);
2879 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), 0);
2882 } else if (vmdq < 32) {
2883 mpsar_lo &= ~(1 << vmdq);
2884 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), mpsar_lo);
2886 mpsar_hi &= ~(1 << (vmdq - 32));
2887 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), mpsar_hi);
2890 /* was that the last pool using this rar? */
2891 if (mpsar_lo == 0 && mpsar_hi == 0 && rar != 0)
2892 hw->mac.ops.clear_rar(hw, rar);
2897 * ixgbe_set_vmdq_generic - Associate a VMDq pool index with a rx address
2898 * @hw: pointer to hardware struct
2899 * @rar: receive address register index to associate with a VMDq index
2900 * @vmdq: VMDq pool index
2902 s32 ixgbe_set_vmdq_generic(struct ixgbe_hw *hw, u32 rar, u32 vmdq)
2905 u32 rar_entries = hw->mac.num_rar_entries;
2907 /* Make sure we are using a valid rar index range */
2908 if (rar >= rar_entries) {
2909 hw_dbg(hw, "RAR index %d is out of range.\n", rar);
2910 return IXGBE_ERR_INVALID_ARGUMENT;
2914 mpsar = IXGBE_READ_REG(hw, IXGBE_MPSAR_LO(rar));
2916 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), mpsar);
2918 mpsar = IXGBE_READ_REG(hw, IXGBE_MPSAR_HI(rar));
2919 mpsar |= 1 << (vmdq - 32);
2920 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), mpsar);
2926 * This function should only be involved in the IOV mode.
2927 * In IOV mode, Default pool is next pool after the number of
2928 * VFs advertized and not 0.
2929 * MPSAR table needs to be updated for SAN_MAC RAR [hw->mac.san_mac_rar_index]
2931 * ixgbe_set_vmdq_san_mac - Associate default VMDq pool index with a rx address
2932 * @hw: pointer to hardware struct
2933 * @vmdq: VMDq pool index
2935 s32 ixgbe_set_vmdq_san_mac_generic(struct ixgbe_hw *hw, u32 vmdq)
2937 u32 rar = hw->mac.san_mac_rar_index;
2940 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), 1 << vmdq);
2941 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), 0);
2943 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), 0);
2944 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), 1 << (vmdq - 32));
2951 * ixgbe_init_uta_tables_generic - Initialize the Unicast Table Array
2952 * @hw: pointer to hardware structure
2954 s32 ixgbe_init_uta_tables_generic(struct ixgbe_hw *hw)
2958 for (i = 0; i < 128; i++)
2959 IXGBE_WRITE_REG(hw, IXGBE_UTA(i), 0);
2965 * ixgbe_find_vlvf_slot - find the vlanid or the first empty slot
2966 * @hw: pointer to hardware structure
2967 * @vlan: VLAN id to write to VLAN filter
2969 * return the VLVF index where this VLAN id should be placed
2972 static s32 ixgbe_find_vlvf_slot(struct ixgbe_hw *hw, u32 vlan)
2975 u32 first_empty_slot = 0;
2978 /* short cut the special case */
2983 * Search for the vlan id in the VLVF entries. Save off the first empty
2984 * slot found along the way
2986 for (regindex = 1; regindex < IXGBE_VLVF_ENTRIES; regindex++) {
2987 bits = IXGBE_READ_REG(hw, IXGBE_VLVF(regindex));
2988 if (!bits && !(first_empty_slot))
2989 first_empty_slot = regindex;
2990 else if ((bits & 0x0FFF) == vlan)
2995 * If regindex is less than IXGBE_VLVF_ENTRIES, then we found the vlan
2996 * in the VLVF. Else use the first empty VLVF register for this
2999 if (regindex >= IXGBE_VLVF_ENTRIES) {
3000 if (first_empty_slot)
3001 regindex = first_empty_slot;
3003 hw_dbg(hw, "No space in VLVF.\n");
3004 regindex = IXGBE_ERR_NO_SPACE;
3012 * ixgbe_set_vfta_generic - Set VLAN filter table
3013 * @hw: pointer to hardware structure
3014 * @vlan: VLAN id to write to VLAN filter
3015 * @vind: VMDq output index that maps queue to VLAN id in VFVFB
3016 * @vlan_on: boolean flag to turn on/off VLAN in VFVF
3018 * Turn on/off specified VLAN in the VLAN filter table.
3020 s32 ixgbe_set_vfta_generic(struct ixgbe_hw *hw, u32 vlan, u32 vind,
3029 bool vfta_changed = false;
3032 return IXGBE_ERR_PARAM;
3035 * this is a 2 part operation - first the VFTA, then the
3036 * VLVF and VLVFB if VT Mode is set
3037 * We don't write the VFTA until we know the VLVF part succeeded.
3041 * The VFTA is a bitstring made up of 128 32-bit registers
3042 * that enable the particular VLAN id, much like the MTA:
3043 * bits[11-5]: which register
3044 * bits[4-0]: which bit in the register
3046 regindex = (vlan >> 5) & 0x7F;
3047 bitindex = vlan & 0x1F;
3048 targetbit = (1 << bitindex);
3049 vfta = IXGBE_READ_REG(hw, IXGBE_VFTA(regindex));
3052 if (!(vfta & targetbit)) {
3054 vfta_changed = true;
3057 if ((vfta & targetbit)) {
3059 vfta_changed = true;
3066 * make sure the vlan is in VLVF
3067 * set the vind bit in the matching VLVFB
3069 * clear the pool bit and possibly the vind
3071 vt = IXGBE_READ_REG(hw, IXGBE_VT_CTL);
3072 if (vt & IXGBE_VT_CTL_VT_ENABLE) {
3075 vlvf_index = ixgbe_find_vlvf_slot(hw, vlan);
3080 /* set the pool bit */
3082 bits = IXGBE_READ_REG(hw,
3083 IXGBE_VLVFB(vlvf_index*2));
3084 bits |= (1 << vind);
3086 IXGBE_VLVFB(vlvf_index*2),
3089 bits = IXGBE_READ_REG(hw,
3090 IXGBE_VLVFB((vlvf_index*2)+1));
3091 bits |= (1 << (vind-32));
3093 IXGBE_VLVFB((vlvf_index*2)+1),
3097 /* clear the pool bit */
3099 bits = IXGBE_READ_REG(hw,
3100 IXGBE_VLVFB(vlvf_index*2));
3101 bits &= ~(1 << vind);
3103 IXGBE_VLVFB(vlvf_index*2),
3105 bits |= IXGBE_READ_REG(hw,
3106 IXGBE_VLVFB((vlvf_index*2)+1));
3108 bits = IXGBE_READ_REG(hw,
3109 IXGBE_VLVFB((vlvf_index*2)+1));
3110 bits &= ~(1 << (vind-32));
3112 IXGBE_VLVFB((vlvf_index*2)+1),
3114 bits |= IXGBE_READ_REG(hw,
3115 IXGBE_VLVFB(vlvf_index*2));
3120 * If there are still bits set in the VLVFB registers
3121 * for the VLAN ID indicated we need to see if the
3122 * caller is requesting that we clear the VFTA entry bit.
3123 * If the caller has requested that we clear the VFTA
3124 * entry bit but there are still pools/VFs using this VLAN
3125 * ID entry then ignore the request. We're not worried
3126 * about the case where we're turning the VFTA VLAN ID
3127 * entry bit on, only when requested to turn it off as
3128 * there may be multiple pools and/or VFs using the
3129 * VLAN ID entry. In that case we cannot clear the
3130 * VFTA bit until all pools/VFs using that VLAN ID have also
3131 * been cleared. This will be indicated by "bits" being
3135 IXGBE_WRITE_REG(hw, IXGBE_VLVF(vlvf_index),
3136 (IXGBE_VLVF_VIEN | vlan));
3138 /* someone wants to clear the vfta entry
3139 * but some pools/VFs are still using it.
3141 vfta_changed = false;
3144 IXGBE_WRITE_REG(hw, IXGBE_VLVF(vlvf_index), 0);
3149 IXGBE_WRITE_REG(hw, IXGBE_VFTA(regindex), vfta);
3155 * ixgbe_clear_vfta_generic - Clear VLAN filter table
3156 * @hw: pointer to hardware structure
3158 * Clears the VLAN filer table, and the VMDq index associated with the filter
3160 s32 ixgbe_clear_vfta_generic(struct ixgbe_hw *hw)
3164 for (offset = 0; offset < hw->mac.vft_size; offset++)
3165 IXGBE_WRITE_REG(hw, IXGBE_VFTA(offset), 0);
3167 for (offset = 0; offset < IXGBE_VLVF_ENTRIES; offset++) {
3168 IXGBE_WRITE_REG(hw, IXGBE_VLVF(offset), 0);
3169 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(offset*2), 0);
3170 IXGBE_WRITE_REG(hw, IXGBE_VLVFB((offset*2)+1), 0);
3177 * ixgbe_check_mac_link_generic - Determine link and speed status
3178 * @hw: pointer to hardware structure
3179 * @speed: pointer to link speed
3180 * @link_up: true when link is up
3181 * @link_up_wait_to_complete: bool used to wait for link up or not
3183 * Reads the links register to determine if link is up and the current speed
3185 s32 ixgbe_check_mac_link_generic(struct ixgbe_hw *hw, ixgbe_link_speed *speed,
3186 bool *link_up, bool link_up_wait_to_complete)
3188 u32 links_reg, links_orig;
3191 /* clear the old state */
3192 links_orig = IXGBE_READ_REG(hw, IXGBE_LINKS);
3194 links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
3196 if (links_orig != links_reg) {
3197 hw_dbg(hw, "LINKS changed from %08X to %08X\n",
3198 links_orig, links_reg);
3201 if (link_up_wait_to_complete) {
3202 for (i = 0; i < IXGBE_LINK_UP_TIME; i++) {
3203 if (links_reg & IXGBE_LINKS_UP) {
3210 links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
3213 if (links_reg & IXGBE_LINKS_UP)
3219 switch (links_reg & IXGBE_LINKS_SPEED_82599) {
3220 case IXGBE_LINKS_SPEED_10G_82599:
3221 if ((hw->mac.type >= ixgbe_mac_X550) &&
3222 (links_reg & IXGBE_LINKS_SPEED_NON_STD))
3223 *speed = IXGBE_LINK_SPEED_2_5GB_FULL;
3225 *speed = IXGBE_LINK_SPEED_10GB_FULL;
3227 case IXGBE_LINKS_SPEED_1G_82599:
3228 *speed = IXGBE_LINK_SPEED_1GB_FULL;
3230 case IXGBE_LINKS_SPEED_100_82599:
3231 if ((hw->mac.type >= ixgbe_mac_X550) &&
3232 (links_reg & IXGBE_LINKS_SPEED_NON_STD))
3233 *speed = IXGBE_LINK_SPEED_5GB_FULL;
3235 *speed = IXGBE_LINK_SPEED_100_FULL;
3238 *speed = IXGBE_LINK_SPEED_UNKNOWN;
3245 * ixgbe_get_wwn_prefix_generic - Get alternative WWNN/WWPN prefix from
3247 * @hw: pointer to hardware structure
3248 * @wwnn_prefix: the alternative WWNN prefix
3249 * @wwpn_prefix: the alternative WWPN prefix
3251 * This function will read the EEPROM from the alternative SAN MAC address
3252 * block to check the support for the alternative WWNN/WWPN prefix support.
3254 s32 ixgbe_get_wwn_prefix_generic(struct ixgbe_hw *hw, u16 *wwnn_prefix,
3258 u16 alt_san_mac_blk_offset;
3260 /* clear output first */
3261 *wwnn_prefix = 0xFFFF;
3262 *wwpn_prefix = 0xFFFF;
3264 /* check if alternative SAN MAC is supported */
3265 offset = IXGBE_ALT_SAN_MAC_ADDR_BLK_PTR;
3266 if (hw->eeprom.ops.read(hw, offset, &alt_san_mac_blk_offset))
3267 goto wwn_prefix_err;
3269 if ((alt_san_mac_blk_offset == 0) ||
3270 (alt_san_mac_blk_offset == 0xFFFF))
3273 /* check capability in alternative san mac address block */
3274 offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_CAPS_OFFSET;
3275 if (hw->eeprom.ops.read(hw, offset, &caps))
3276 goto wwn_prefix_err;
3277 if (!(caps & IXGBE_ALT_SAN_MAC_ADDR_CAPS_ALTWWN))
3280 /* get the corresponding prefix for WWNN/WWPN */
3281 offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_WWNN_OFFSET;
3282 if (hw->eeprom.ops.read(hw, offset, wwnn_prefix))
3283 hw_err(hw, "eeprom read at offset %d failed\n", offset);
3285 offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_WWPN_OFFSET;
3286 if (hw->eeprom.ops.read(hw, offset, wwpn_prefix))
3287 goto wwn_prefix_err;
3292 hw_err(hw, "eeprom read at offset %d failed\n", offset);
3297 * ixgbe_set_mac_anti_spoofing - Enable/Disable MAC anti-spoofing
3298 * @hw: pointer to hardware structure
3299 * @enable: enable or disable switch for anti-spoofing
3300 * @pf: Physical Function pool - do not enable anti-spoofing for the PF
3303 void ixgbe_set_mac_anti_spoofing(struct ixgbe_hw *hw, bool enable, int pf)
3306 int pf_target_reg = pf >> 3;
3307 int pf_target_shift = pf % 8;
3310 if (hw->mac.type == ixgbe_mac_82598EB)
3314 pfvfspoof = IXGBE_SPOOF_MACAS_MASK;
3317 * PFVFSPOOF register array is size 8 with 8 bits assigned to
3318 * MAC anti-spoof enables in each register array element.
3320 for (j = 0; j < pf_target_reg; j++)
3321 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(j), pfvfspoof);
3324 * The PF should be allowed to spoof so that it can support
3325 * emulation mode NICs. Do not set the bits assigned to the PF
3327 pfvfspoof &= (1 << pf_target_shift) - 1;
3328 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(j), pfvfspoof);
3331 * Remaining pools belong to the PF so they do not need to have
3332 * anti-spoofing enabled.
3334 for (j++; j < IXGBE_PFVFSPOOF_REG_COUNT; j++)
3335 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(j), 0);
3339 * ixgbe_set_vlan_anti_spoofing - Enable/Disable VLAN anti-spoofing
3340 * @hw: pointer to hardware structure
3341 * @enable: enable or disable switch for VLAN anti-spoofing
3342 * @pf: Virtual Function pool - VF Pool to set for VLAN anti-spoofing
3345 void ixgbe_set_vlan_anti_spoofing(struct ixgbe_hw *hw, bool enable, int vf)
3347 int vf_target_reg = vf >> 3;
3348 int vf_target_shift = vf % 8 + IXGBE_SPOOF_VLANAS_SHIFT;
3351 if (hw->mac.type == ixgbe_mac_82598EB)
3354 pfvfspoof = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg));
3356 pfvfspoof |= (1 << vf_target_shift);
3358 pfvfspoof &= ~(1 << vf_target_shift);
3359 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), pfvfspoof);
3363 * ixgbe_get_device_caps_generic - Get additional device capabilities
3364 * @hw: pointer to hardware structure
3365 * @device_caps: the EEPROM word with the extra device capabilities
3367 * This function will read the EEPROM location for the device capabilities,
3368 * and return the word through device_caps.
3370 s32 ixgbe_get_device_caps_generic(struct ixgbe_hw *hw, u16 *device_caps)
3372 hw->eeprom.ops.read(hw, IXGBE_DEVICE_CAPS, device_caps);
3378 * ixgbe_set_rxpba_generic - Initialize RX packet buffer
3379 * @hw: pointer to hardware structure
3380 * @num_pb: number of packet buffers to allocate
3381 * @headroom: reserve n KB of headroom
3382 * @strategy: packet buffer allocation strategy
3384 void ixgbe_set_rxpba_generic(struct ixgbe_hw *hw,
3389 u32 pbsize = hw->mac.rx_pb_size;
3391 u32 rxpktsize, txpktsize, txpbthresh;
3393 /* Reserve headroom */
3399 /* Divide remaining packet buffer space amongst the number
3400 * of packet buffers requested using supplied strategy.
3403 case (PBA_STRATEGY_WEIGHTED):
3404 /* pba_80_48 strategy weight first half of packet buffer with
3405 * 5/8 of the packet buffer space.
3407 rxpktsize = ((pbsize * 5 * 2) / (num_pb * 8));
3408 pbsize -= rxpktsize * (num_pb / 2);
3409 rxpktsize <<= IXGBE_RXPBSIZE_SHIFT;
3410 for (; i < (num_pb / 2); i++)
3411 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpktsize);
3412 /* Fall through to configure remaining packet buffers */
3413 case (PBA_STRATEGY_EQUAL):
3414 /* Divide the remaining Rx packet buffer evenly among the TCs */
3415 rxpktsize = (pbsize / (num_pb - i)) << IXGBE_RXPBSIZE_SHIFT;
3416 for (; i < num_pb; i++)
3417 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpktsize);
3424 * Setup Tx packet buffer and threshold equally for all TCs
3425 * TXPBTHRESH register is set in K so divide by 1024 and subtract
3426 * 10 since the largest packet we support is just over 9K.
3428 txpktsize = IXGBE_TXPBSIZE_MAX / num_pb;
3429 txpbthresh = (txpktsize / 1024) - IXGBE_TXPKT_SIZE_MAX;
3430 for (i = 0; i < num_pb; i++) {
3431 IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), txpktsize);
3432 IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), txpbthresh);
3435 /* Clear unused TCs, if any, to zero buffer size*/
3436 for (; i < IXGBE_MAX_PB; i++) {
3437 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), 0);
3438 IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), 0);
3439 IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), 0);
3444 * ixgbe_calculate_checksum - Calculate checksum for buffer
3445 * @buffer: pointer to EEPROM
3446 * @length: size of EEPROM to calculate a checksum for
3448 * Calculates the checksum for some buffer on a specified length. The
3449 * checksum calculated is returned.
3451 static u8 ixgbe_calculate_checksum(u8 *buffer, u32 length)
3459 for (i = 0; i < length; i++)
3462 return (u8) (0 - sum);
3466 * ixgbe_host_interface_command - Issue command to manageability block
3467 * @hw: pointer to the HW structure
3468 * @buffer: contains the command to write and where the return status will
3470 * @length: length of buffer, must be multiple of 4 bytes
3471 * @timeout: time in ms to wait for command completion
3472 * @return_data: read and return data from the buffer (true) or not (false)
3473 * Needed because FW structures are big endian and decoding of
3474 * these fields can be 8 bit or 16 bit based on command. Decoding
3475 * is not easily understood without making a table of commands.
3476 * So we will leave this up to the caller to read back the data
3479 * Communicates with the manageability block. On success return 0
3480 * else return IXGBE_ERR_HOST_INTERFACE_COMMAND.
3482 s32 ixgbe_host_interface_command(struct ixgbe_hw *hw, u32 *buffer,
3483 u32 length, u32 timeout,
3486 u32 hicr, i, bi, fwsts;
3487 u32 hdr_size = sizeof(struct ixgbe_hic_hdr);
3488 u16 buf_len, dword_len;
3490 if (length == 0 || length > IXGBE_HI_MAX_BLOCK_BYTE_LENGTH) {
3491 hw_dbg(hw, "Buffer length failure buffersize-%d.\n", length);
3492 return IXGBE_ERR_HOST_INTERFACE_COMMAND;
3495 /* Set bit 9 of FWSTS clearing FW reset indication */
3496 fwsts = IXGBE_READ_REG(hw, IXGBE_FWSTS);
3497 IXGBE_WRITE_REG(hw, IXGBE_FWSTS, fwsts | IXGBE_FWSTS_FWRI);
3499 /* Check that the host interface is enabled. */
3500 hicr = IXGBE_READ_REG(hw, IXGBE_HICR);
3501 if ((hicr & IXGBE_HICR_EN) == 0) {
3502 hw_dbg(hw, "IXGBE_HOST_EN bit disabled.\n");
3503 return IXGBE_ERR_HOST_INTERFACE_COMMAND;
3506 /* Calculate length in DWORDs. We must be DWORD aligned */
3507 if ((length % (sizeof(u32))) != 0) {
3508 hw_dbg(hw, "Buffer length failure, not aligned to dword");
3509 return IXGBE_ERR_INVALID_ARGUMENT;
3512 dword_len = length >> 2;
3515 * The device driver writes the relevant command block
3516 * into the ram area.
3518 for (i = 0; i < dword_len; i++)
3519 IXGBE_WRITE_REG_ARRAY(hw, IXGBE_FLEX_MNG,
3520 i, cpu_to_le32(buffer[i]));
3522 /* Setting this bit tells the ARC that a new command is pending. */
3523 IXGBE_WRITE_REG(hw, IXGBE_HICR, hicr | IXGBE_HICR_C);
3525 for (i = 0; i < timeout; i++) {
3526 hicr = IXGBE_READ_REG(hw, IXGBE_HICR);
3527 if (!(hicr & IXGBE_HICR_C))
3529 usleep_range(1000, 2000);
3532 /* Check command successful completion. */
3533 if ((timeout != 0 && i == timeout) ||
3534 (!(IXGBE_READ_REG(hw, IXGBE_HICR) & IXGBE_HICR_SV))) {
3535 hw_dbg(hw, "Command has failed with no status valid.\n");
3536 return IXGBE_ERR_HOST_INTERFACE_COMMAND;
3542 /* Calculate length in DWORDs */
3543 dword_len = hdr_size >> 2;
3545 /* first pull in the header so we know the buffer length */
3546 for (bi = 0; bi < dword_len; bi++) {
3547 buffer[bi] = IXGBE_READ_REG_ARRAY(hw, IXGBE_FLEX_MNG, bi);
3548 le32_to_cpus(&buffer[bi]);
3551 /* If there is any thing in data position pull it in */
3552 buf_len = ((struct ixgbe_hic_hdr *)buffer)->buf_len;
3556 if (length < (buf_len + hdr_size)) {
3557 hw_dbg(hw, "Buffer not large enough for reply message.\n");
3558 return IXGBE_ERR_HOST_INTERFACE_COMMAND;
3561 /* Calculate length in DWORDs, add 3 for odd lengths */
3562 dword_len = (buf_len + 3) >> 2;
3564 /* Pull in the rest of the buffer (bi is where we left off)*/
3565 for (; bi <= dword_len; bi++) {
3566 buffer[bi] = IXGBE_READ_REG_ARRAY(hw, IXGBE_FLEX_MNG, bi);
3567 le32_to_cpus(&buffer[bi]);
3574 * ixgbe_set_fw_drv_ver_generic - Sends driver version to firmware
3575 * @hw: pointer to the HW structure
3576 * @maj: driver version major number
3577 * @min: driver version minor number
3578 * @build: driver version build number
3579 * @sub: driver version sub build number
3581 * Sends driver version number to firmware through the manageability
3582 * block. On success return 0
3583 * else returns IXGBE_ERR_SWFW_SYNC when encountering an error acquiring
3584 * semaphore or IXGBE_ERR_HOST_INTERFACE_COMMAND when command fails.
3586 s32 ixgbe_set_fw_drv_ver_generic(struct ixgbe_hw *hw, u8 maj, u8 min,
3589 struct ixgbe_hic_drv_info fw_cmd;
3593 if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_SW_MNG_SM))
3594 return IXGBE_ERR_SWFW_SYNC;
3596 fw_cmd.hdr.cmd = FW_CEM_CMD_DRIVER_INFO;
3597 fw_cmd.hdr.buf_len = FW_CEM_CMD_DRIVER_INFO_LEN;
3598 fw_cmd.hdr.cmd_or_resp.cmd_resv = FW_CEM_CMD_RESERVED;
3599 fw_cmd.port_num = (u8)hw->bus.func;
3600 fw_cmd.ver_maj = maj;
3601 fw_cmd.ver_min = min;
3602 fw_cmd.ver_build = build;
3603 fw_cmd.ver_sub = sub;
3604 fw_cmd.hdr.checksum = 0;
3605 fw_cmd.hdr.checksum = ixgbe_calculate_checksum((u8 *)&fw_cmd,
3606 (FW_CEM_HDR_LEN + fw_cmd.hdr.buf_len));
3610 for (i = 0; i <= FW_CEM_MAX_RETRIES; i++) {
3611 ret_val = ixgbe_host_interface_command(hw, (u32 *)&fw_cmd,
3613 IXGBE_HI_COMMAND_TIMEOUT,
3618 if (fw_cmd.hdr.cmd_or_resp.ret_status ==
3619 FW_CEM_RESP_STATUS_SUCCESS)
3622 ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND;
3627 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_SW_MNG_SM);
3632 * ixgbe_clear_tx_pending - Clear pending TX work from the PCIe fifo
3633 * @hw: pointer to the hardware structure
3635 * The 82599 and x540 MACs can experience issues if TX work is still pending
3636 * when a reset occurs. This function prevents this by flushing the PCIe
3637 * buffers on the system.
3639 void ixgbe_clear_tx_pending(struct ixgbe_hw *hw)
3641 u32 gcr_ext, hlreg0, i, poll;
3645 * If double reset is not requested then all transactions should
3646 * already be clear and as such there is no work to do
3648 if (!(hw->mac.flags & IXGBE_FLAGS_DOUBLE_RESET_REQUIRED))
3652 * Set loopback enable to prevent any transmits from being sent
3653 * should the link come up. This assumes that the RXCTRL.RXEN bit
3654 * has already been cleared.
3656 hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0);
3657 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0 | IXGBE_HLREG0_LPBK);
3659 /* wait for a last completion before clearing buffers */
3660 IXGBE_WRITE_FLUSH(hw);
3661 usleep_range(3000, 6000);
3663 /* Before proceeding, make sure that the PCIe block does not have
3664 * transactions pending.
3666 poll = ixgbe_pcie_timeout_poll(hw);
3667 for (i = 0; i < poll; i++) {
3668 usleep_range(100, 200);
3669 value = ixgbe_read_pci_cfg_word(hw, IXGBE_PCI_DEVICE_STATUS);
3670 if (ixgbe_removed(hw->hw_addr))
3672 if (!(value & IXGBE_PCI_DEVICE_STATUS_TRANSACTION_PENDING))
3676 /* initiate cleaning flow for buffers in the PCIe transaction layer */
3677 gcr_ext = IXGBE_READ_REG(hw, IXGBE_GCR_EXT);
3678 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT,
3679 gcr_ext | IXGBE_GCR_EXT_BUFFERS_CLEAR);
3681 /* Flush all writes and allow 20usec for all transactions to clear */
3682 IXGBE_WRITE_FLUSH(hw);
3685 /* restore previous register values */
3686 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, gcr_ext);
3687 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0);
3690 static const u8 ixgbe_emc_temp_data[4] = {
3691 IXGBE_EMC_INTERNAL_DATA,
3692 IXGBE_EMC_DIODE1_DATA,
3693 IXGBE_EMC_DIODE2_DATA,
3694 IXGBE_EMC_DIODE3_DATA
3696 static const u8 ixgbe_emc_therm_limit[4] = {
3697 IXGBE_EMC_INTERNAL_THERM_LIMIT,
3698 IXGBE_EMC_DIODE1_THERM_LIMIT,
3699 IXGBE_EMC_DIODE2_THERM_LIMIT,
3700 IXGBE_EMC_DIODE3_THERM_LIMIT
3704 * ixgbe_get_ets_data - Extracts the ETS bit data
3705 * @hw: pointer to hardware structure
3706 * @ets_cfg: extected ETS data
3707 * @ets_offset: offset of ETS data
3709 * Returns error code.
3711 static s32 ixgbe_get_ets_data(struct ixgbe_hw *hw, u16 *ets_cfg,
3716 status = hw->eeprom.ops.read(hw, IXGBE_ETS_CFG, ets_offset);
3720 if ((*ets_offset == 0x0000) || (*ets_offset == 0xFFFF))
3721 return IXGBE_NOT_IMPLEMENTED;
3723 status = hw->eeprom.ops.read(hw, *ets_offset, ets_cfg);
3727 if ((*ets_cfg & IXGBE_ETS_TYPE_MASK) != IXGBE_ETS_TYPE_EMC_SHIFTED)
3728 return IXGBE_NOT_IMPLEMENTED;
3734 * ixgbe_get_thermal_sensor_data - Gathers thermal sensor data
3735 * @hw: pointer to hardware structure
3737 * Returns the thermal sensor data structure
3739 s32 ixgbe_get_thermal_sensor_data_generic(struct ixgbe_hw *hw)
3747 struct ixgbe_thermal_sensor_data *data = &hw->mac.thermal_sensor_data;
3749 /* Only support thermal sensors attached to physical port 0 */
3750 if ((IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1))
3751 return IXGBE_NOT_IMPLEMENTED;
3753 status = ixgbe_get_ets_data(hw, &ets_cfg, &ets_offset);
3757 num_sensors = (ets_cfg & IXGBE_ETS_NUM_SENSORS_MASK);
3758 if (num_sensors > IXGBE_MAX_SENSORS)
3759 num_sensors = IXGBE_MAX_SENSORS;
3761 for (i = 0; i < num_sensors; i++) {
3765 status = hw->eeprom.ops.read(hw, (ets_offset + 1 + i),
3770 sensor_index = ((ets_sensor & IXGBE_ETS_DATA_INDEX_MASK) >>
3771 IXGBE_ETS_DATA_INDEX_SHIFT);
3772 sensor_location = ((ets_sensor & IXGBE_ETS_DATA_LOC_MASK) >>
3773 IXGBE_ETS_DATA_LOC_SHIFT);
3775 if (sensor_location != 0) {
3776 status = hw->phy.ops.read_i2c_byte(hw,
3777 ixgbe_emc_temp_data[sensor_index],
3778 IXGBE_I2C_THERMAL_SENSOR_ADDR,
3779 &data->sensor[i].temp);
3789 * ixgbe_init_thermal_sensor_thresh_generic - Inits thermal sensor thresholds
3790 * @hw: pointer to hardware structure
3792 * Inits the thermal sensor thresholds according to the NVM map
3793 * and save off the threshold and location values into mac.thermal_sensor_data
3795 s32 ixgbe_init_thermal_sensor_thresh_generic(struct ixgbe_hw *hw)
3801 u8 low_thresh_delta;
3805 struct ixgbe_thermal_sensor_data *data = &hw->mac.thermal_sensor_data;
3807 memset(data, 0, sizeof(struct ixgbe_thermal_sensor_data));
3809 /* Only support thermal sensors attached to physical port 0 */
3810 if ((IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1))
3811 return IXGBE_NOT_IMPLEMENTED;
3813 status = ixgbe_get_ets_data(hw, &ets_cfg, &ets_offset);
3817 low_thresh_delta = ((ets_cfg & IXGBE_ETS_LTHRES_DELTA_MASK) >>
3818 IXGBE_ETS_LTHRES_DELTA_SHIFT);
3819 num_sensors = (ets_cfg & IXGBE_ETS_NUM_SENSORS_MASK);
3820 if (num_sensors > IXGBE_MAX_SENSORS)
3821 num_sensors = IXGBE_MAX_SENSORS;
3823 for (i = 0; i < num_sensors; i++) {
3827 if (hw->eeprom.ops.read(hw, ets_offset + 1 + i, &ets_sensor)) {
3828 hw_err(hw, "eeprom read at offset %d failed\n",
3829 ets_offset + 1 + i);
3832 sensor_index = ((ets_sensor & IXGBE_ETS_DATA_INDEX_MASK) >>
3833 IXGBE_ETS_DATA_INDEX_SHIFT);
3834 sensor_location = ((ets_sensor & IXGBE_ETS_DATA_LOC_MASK) >>
3835 IXGBE_ETS_DATA_LOC_SHIFT);
3836 therm_limit = ets_sensor & IXGBE_ETS_DATA_HTHRESH_MASK;
3838 hw->phy.ops.write_i2c_byte(hw,
3839 ixgbe_emc_therm_limit[sensor_index],
3840 IXGBE_I2C_THERMAL_SENSOR_ADDR, therm_limit);
3842 if (sensor_location == 0)
3845 data->sensor[i].location = sensor_location;
3846 data->sensor[i].caution_thresh = therm_limit;
3847 data->sensor[i].max_op_thresh = therm_limit - low_thresh_delta;