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 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
24 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
26 *******************************************************************************/
28 #include <linux/pci.h>
29 #include <linux/delay.h>
30 #include <linux/sched.h>
31 #include <linux/netdevice.h>
34 #include "ixgbe_common.h"
35 #include "ixgbe_phy.h"
37 static s32 ixgbe_acquire_eeprom(struct ixgbe_hw *hw);
38 static s32 ixgbe_get_eeprom_semaphore(struct ixgbe_hw *hw);
39 static void ixgbe_release_eeprom_semaphore(struct ixgbe_hw *hw);
40 static s32 ixgbe_ready_eeprom(struct ixgbe_hw *hw);
41 static void ixgbe_standby_eeprom(struct ixgbe_hw *hw);
42 static void ixgbe_shift_out_eeprom_bits(struct ixgbe_hw *hw, u16 data,
44 static u16 ixgbe_shift_in_eeprom_bits(struct ixgbe_hw *hw, u16 count);
45 static void ixgbe_raise_eeprom_clk(struct ixgbe_hw *hw, u32 *eec);
46 static void ixgbe_lower_eeprom_clk(struct ixgbe_hw *hw, u32 *eec);
47 static void ixgbe_release_eeprom(struct ixgbe_hw *hw);
49 static s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr);
50 static s32 ixgbe_poll_eerd_eewr_done(struct ixgbe_hw *hw, u32 ee_reg);
51 static s32 ixgbe_read_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset,
52 u16 words, u16 *data);
53 static s32 ixgbe_write_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset,
54 u16 words, u16 *data);
55 static s32 ixgbe_detect_eeprom_page_size_generic(struct ixgbe_hw *hw,
57 static s32 ixgbe_disable_pcie_master(struct ixgbe_hw *hw);
60 * ixgbe_device_supports_autoneg_fc - Check if phy supports autoneg flow
62 * @hw: pointer to hardware structure
64 * There are several phys that do not support autoneg flow control. This
65 * function check the device id to see if the associated phy supports
66 * autoneg flow control.
68 bool ixgbe_device_supports_autoneg_fc(struct ixgbe_hw *hw)
70 bool supported = false;
71 ixgbe_link_speed speed;
74 switch (hw->phy.media_type) {
75 case ixgbe_media_type_fiber_fixed:
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 ret_val = IXGBE_ERR_INVALID_LINK_SETTINGS;
130 * 10gig parts do not have a word in the EEPROM to determine the
131 * default flow control setting, so we explicitly set it to full.
133 if (hw->fc.requested_mode == ixgbe_fc_default)
134 hw->fc.requested_mode = ixgbe_fc_full;
137 * Set up the 1G and 10G flow control advertisement registers so the
138 * HW will be able to do fc autoneg once the cable is plugged in. If
139 * we link at 10G, the 1G advertisement is harmless and vice versa.
141 switch (hw->phy.media_type) {
142 case ixgbe_media_type_backplane:
143 /* some MAC's need RMW protection on AUTOC */
144 ret_val = hw->mac.ops.prot_autoc_read(hw, &locked, ®_bp);
148 /* only backplane uses autoc so fall though */
149 case ixgbe_media_type_fiber_fixed:
150 case ixgbe_media_type_fiber:
151 reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANA);
154 case ixgbe_media_type_copper:
155 hw->phy.ops.read_reg(hw, MDIO_AN_ADVERTISE,
156 MDIO_MMD_AN, ®_cu);
163 * The possible values of fc.requested_mode are:
164 * 0: Flow control is completely disabled
165 * 1: Rx flow control is enabled (we can receive pause frames,
166 * but not send pause frames).
167 * 2: Tx flow control is enabled (we can send pause frames but
168 * we do not support receiving pause frames).
169 * 3: Both Rx and Tx flow control (symmetric) are enabled.
172 switch (hw->fc.requested_mode) {
174 /* Flow control completely disabled by software override. */
175 reg &= ~(IXGBE_PCS1GANA_SYM_PAUSE | IXGBE_PCS1GANA_ASM_PAUSE);
176 if (hw->phy.media_type == ixgbe_media_type_backplane)
177 reg_bp &= ~(IXGBE_AUTOC_SYM_PAUSE |
178 IXGBE_AUTOC_ASM_PAUSE);
179 else if (hw->phy.media_type == ixgbe_media_type_copper)
180 reg_cu &= ~(IXGBE_TAF_SYM_PAUSE | IXGBE_TAF_ASM_PAUSE);
182 case ixgbe_fc_tx_pause:
184 * Tx Flow control is enabled, and Rx Flow control is
185 * disabled by software override.
187 reg |= IXGBE_PCS1GANA_ASM_PAUSE;
188 reg &= ~IXGBE_PCS1GANA_SYM_PAUSE;
189 if (hw->phy.media_type == ixgbe_media_type_backplane) {
190 reg_bp |= IXGBE_AUTOC_ASM_PAUSE;
191 reg_bp &= ~IXGBE_AUTOC_SYM_PAUSE;
192 } else if (hw->phy.media_type == ixgbe_media_type_copper) {
193 reg_cu |= IXGBE_TAF_ASM_PAUSE;
194 reg_cu &= ~IXGBE_TAF_SYM_PAUSE;
197 case ixgbe_fc_rx_pause:
199 * Rx Flow control is enabled and Tx Flow control is
200 * disabled by software override. Since there really
201 * isn't a way to advertise that we are capable of RX
202 * Pause ONLY, we will advertise that we support both
203 * symmetric and asymmetric Rx PAUSE, as such we fall
204 * through to the fc_full statement. Later, we will
205 * disable the adapter's ability to send PAUSE frames.
208 /* Flow control (both Rx and Tx) is enabled by SW override. */
209 reg |= IXGBE_PCS1GANA_SYM_PAUSE | IXGBE_PCS1GANA_ASM_PAUSE;
210 if (hw->phy.media_type == ixgbe_media_type_backplane)
211 reg_bp |= IXGBE_AUTOC_SYM_PAUSE |
212 IXGBE_AUTOC_ASM_PAUSE;
213 else if (hw->phy.media_type == ixgbe_media_type_copper)
214 reg_cu |= IXGBE_TAF_SYM_PAUSE | IXGBE_TAF_ASM_PAUSE;
217 hw_dbg(hw, "Flow control param set incorrectly\n");
218 ret_val = IXGBE_ERR_CONFIG;
223 if (hw->mac.type != ixgbe_mac_X540) {
225 * Enable auto-negotiation between the MAC & PHY;
226 * the MAC will advertise clause 37 flow control.
228 IXGBE_WRITE_REG(hw, IXGBE_PCS1GANA, reg);
229 reg = IXGBE_READ_REG(hw, IXGBE_PCS1GLCTL);
231 /* Disable AN timeout */
232 if (hw->fc.strict_ieee)
233 reg &= ~IXGBE_PCS1GLCTL_AN_1G_TIMEOUT_EN;
235 IXGBE_WRITE_REG(hw, IXGBE_PCS1GLCTL, reg);
236 hw_dbg(hw, "Set up FC; PCS1GLCTL = 0x%08X\n", reg);
240 * AUTOC restart handles negotiation of 1G and 10G on backplane
241 * and copper. There is no need to set the PCS1GCTL register.
244 if (hw->phy.media_type == ixgbe_media_type_backplane) {
245 /* Need the SW/FW semaphore around AUTOC writes if 82599 and
246 * LESM is on, likewise reset_pipeline requries the lock as
247 * it also writes AUTOC.
249 ret_val = hw->mac.ops.prot_autoc_write(hw, reg_bp, locked);
253 } else if ((hw->phy.media_type == ixgbe_media_type_copper) &&
254 ixgbe_device_supports_autoneg_fc(hw)) {
255 hw->phy.ops.write_reg(hw, MDIO_AN_ADVERTISE,
256 MDIO_MMD_AN, reg_cu);
259 hw_dbg(hw, "Set up FC; IXGBE_AUTOC = 0x%08X\n", reg);
265 * ixgbe_start_hw_generic - Prepare hardware for Tx/Rx
266 * @hw: pointer to hardware structure
268 * Starts the hardware by filling the bus info structure and media type, clears
269 * all on chip counters, initializes receive address registers, multicast
270 * table, VLAN filter table, calls routine to set up link and flow control
271 * settings, and leaves transmit and receive units disabled and uninitialized
273 s32 ixgbe_start_hw_generic(struct ixgbe_hw *hw)
277 /* Set the media type */
278 hw->phy.media_type = hw->mac.ops.get_media_type(hw);
280 /* Identify the PHY */
281 hw->phy.ops.identify(hw);
283 /* Clear the VLAN filter table */
284 hw->mac.ops.clear_vfta(hw);
286 /* Clear statistics registers */
287 hw->mac.ops.clear_hw_cntrs(hw);
289 /* Set No Snoop Disable */
290 ctrl_ext = IXGBE_READ_REG(hw, IXGBE_CTRL_EXT);
291 ctrl_ext |= IXGBE_CTRL_EXT_NS_DIS;
292 IXGBE_WRITE_REG(hw, IXGBE_CTRL_EXT, ctrl_ext);
293 IXGBE_WRITE_FLUSH(hw);
295 /* Setup flow control */
298 /* Clear adapter stopped flag */
299 hw->adapter_stopped = false;
305 * ixgbe_start_hw_gen2 - Init sequence for common device family
306 * @hw: pointer to hw structure
308 * Performs the init sequence common to the second generation
310 * Devices in the second generation:
314 s32 ixgbe_start_hw_gen2(struct ixgbe_hw *hw)
319 /* Clear the rate limiters */
320 for (i = 0; i < hw->mac.max_tx_queues; i++) {
321 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, i);
322 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, 0);
324 IXGBE_WRITE_FLUSH(hw);
326 /* Disable relaxed ordering */
327 for (i = 0; i < hw->mac.max_tx_queues; i++) {
328 regval = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL_82599(i));
329 regval &= ~IXGBE_DCA_TXCTRL_DESC_WRO_EN;
330 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL_82599(i), regval);
333 for (i = 0; i < hw->mac.max_rx_queues; i++) {
334 regval = IXGBE_READ_REG(hw, IXGBE_DCA_RXCTRL(i));
335 regval &= ~(IXGBE_DCA_RXCTRL_DATA_WRO_EN |
336 IXGBE_DCA_RXCTRL_HEAD_WRO_EN);
337 IXGBE_WRITE_REG(hw, IXGBE_DCA_RXCTRL(i), regval);
344 * ixgbe_init_hw_generic - Generic hardware initialization
345 * @hw: pointer to hardware structure
347 * Initialize the hardware by resetting the hardware, filling the bus info
348 * structure and media type, clears all on chip counters, initializes receive
349 * address registers, multicast table, VLAN filter table, calls routine to set
350 * up link and flow control settings, and leaves transmit and receive units
351 * disabled and uninitialized
353 s32 ixgbe_init_hw_generic(struct ixgbe_hw *hw)
357 /* Reset the hardware */
358 status = hw->mac.ops.reset_hw(hw);
362 status = hw->mac.ops.start_hw(hw);
369 * ixgbe_clear_hw_cntrs_generic - Generic clear hardware counters
370 * @hw: pointer to hardware structure
372 * Clears all hardware statistics counters by reading them from the hardware
373 * Statistics counters are clear on read.
375 s32 ixgbe_clear_hw_cntrs_generic(struct ixgbe_hw *hw)
379 IXGBE_READ_REG(hw, IXGBE_CRCERRS);
380 IXGBE_READ_REG(hw, IXGBE_ILLERRC);
381 IXGBE_READ_REG(hw, IXGBE_ERRBC);
382 IXGBE_READ_REG(hw, IXGBE_MSPDC);
383 for (i = 0; i < 8; i++)
384 IXGBE_READ_REG(hw, IXGBE_MPC(i));
386 IXGBE_READ_REG(hw, IXGBE_MLFC);
387 IXGBE_READ_REG(hw, IXGBE_MRFC);
388 IXGBE_READ_REG(hw, IXGBE_RLEC);
389 IXGBE_READ_REG(hw, IXGBE_LXONTXC);
390 IXGBE_READ_REG(hw, IXGBE_LXOFFTXC);
391 if (hw->mac.type >= ixgbe_mac_82599EB) {
392 IXGBE_READ_REG(hw, IXGBE_LXONRXCNT);
393 IXGBE_READ_REG(hw, IXGBE_LXOFFRXCNT);
395 IXGBE_READ_REG(hw, IXGBE_LXONRXC);
396 IXGBE_READ_REG(hw, IXGBE_LXOFFRXC);
399 for (i = 0; i < 8; i++) {
400 IXGBE_READ_REG(hw, IXGBE_PXONTXC(i));
401 IXGBE_READ_REG(hw, IXGBE_PXOFFTXC(i));
402 if (hw->mac.type >= ixgbe_mac_82599EB) {
403 IXGBE_READ_REG(hw, IXGBE_PXONRXCNT(i));
404 IXGBE_READ_REG(hw, IXGBE_PXOFFRXCNT(i));
406 IXGBE_READ_REG(hw, IXGBE_PXONRXC(i));
407 IXGBE_READ_REG(hw, IXGBE_PXOFFRXC(i));
410 if (hw->mac.type >= ixgbe_mac_82599EB)
411 for (i = 0; i < 8; i++)
412 IXGBE_READ_REG(hw, IXGBE_PXON2OFFCNT(i));
413 IXGBE_READ_REG(hw, IXGBE_PRC64);
414 IXGBE_READ_REG(hw, IXGBE_PRC127);
415 IXGBE_READ_REG(hw, IXGBE_PRC255);
416 IXGBE_READ_REG(hw, IXGBE_PRC511);
417 IXGBE_READ_REG(hw, IXGBE_PRC1023);
418 IXGBE_READ_REG(hw, IXGBE_PRC1522);
419 IXGBE_READ_REG(hw, IXGBE_GPRC);
420 IXGBE_READ_REG(hw, IXGBE_BPRC);
421 IXGBE_READ_REG(hw, IXGBE_MPRC);
422 IXGBE_READ_REG(hw, IXGBE_GPTC);
423 IXGBE_READ_REG(hw, IXGBE_GORCL);
424 IXGBE_READ_REG(hw, IXGBE_GORCH);
425 IXGBE_READ_REG(hw, IXGBE_GOTCL);
426 IXGBE_READ_REG(hw, IXGBE_GOTCH);
427 if (hw->mac.type == ixgbe_mac_82598EB)
428 for (i = 0; i < 8; i++)
429 IXGBE_READ_REG(hw, IXGBE_RNBC(i));
430 IXGBE_READ_REG(hw, IXGBE_RUC);
431 IXGBE_READ_REG(hw, IXGBE_RFC);
432 IXGBE_READ_REG(hw, IXGBE_ROC);
433 IXGBE_READ_REG(hw, IXGBE_RJC);
434 IXGBE_READ_REG(hw, IXGBE_MNGPRC);
435 IXGBE_READ_REG(hw, IXGBE_MNGPDC);
436 IXGBE_READ_REG(hw, IXGBE_MNGPTC);
437 IXGBE_READ_REG(hw, IXGBE_TORL);
438 IXGBE_READ_REG(hw, IXGBE_TORH);
439 IXGBE_READ_REG(hw, IXGBE_TPR);
440 IXGBE_READ_REG(hw, IXGBE_TPT);
441 IXGBE_READ_REG(hw, IXGBE_PTC64);
442 IXGBE_READ_REG(hw, IXGBE_PTC127);
443 IXGBE_READ_REG(hw, IXGBE_PTC255);
444 IXGBE_READ_REG(hw, IXGBE_PTC511);
445 IXGBE_READ_REG(hw, IXGBE_PTC1023);
446 IXGBE_READ_REG(hw, IXGBE_PTC1522);
447 IXGBE_READ_REG(hw, IXGBE_MPTC);
448 IXGBE_READ_REG(hw, IXGBE_BPTC);
449 for (i = 0; i < 16; i++) {
450 IXGBE_READ_REG(hw, IXGBE_QPRC(i));
451 IXGBE_READ_REG(hw, IXGBE_QPTC(i));
452 if (hw->mac.type >= ixgbe_mac_82599EB) {
453 IXGBE_READ_REG(hw, IXGBE_QBRC_L(i));
454 IXGBE_READ_REG(hw, IXGBE_QBRC_H(i));
455 IXGBE_READ_REG(hw, IXGBE_QBTC_L(i));
456 IXGBE_READ_REG(hw, IXGBE_QBTC_H(i));
457 IXGBE_READ_REG(hw, IXGBE_QPRDC(i));
459 IXGBE_READ_REG(hw, IXGBE_QBRC(i));
460 IXGBE_READ_REG(hw, IXGBE_QBTC(i));
464 if (hw->mac.type == ixgbe_mac_X540) {
466 hw->phy.ops.identify(hw);
467 hw->phy.ops.read_reg(hw, IXGBE_PCRC8ECL, MDIO_MMD_PCS, &i);
468 hw->phy.ops.read_reg(hw, IXGBE_PCRC8ECH, MDIO_MMD_PCS, &i);
469 hw->phy.ops.read_reg(hw, IXGBE_LDPCECL, MDIO_MMD_PCS, &i);
470 hw->phy.ops.read_reg(hw, IXGBE_LDPCECH, MDIO_MMD_PCS, &i);
477 * ixgbe_read_pba_string_generic - Reads part number string from EEPROM
478 * @hw: pointer to hardware structure
479 * @pba_num: stores the part number string from the EEPROM
480 * @pba_num_size: part number string buffer length
482 * Reads the part number string from the EEPROM.
484 s32 ixgbe_read_pba_string_generic(struct ixgbe_hw *hw, u8 *pba_num,
493 if (pba_num == NULL) {
494 hw_dbg(hw, "PBA string buffer was null\n");
495 return IXGBE_ERR_INVALID_ARGUMENT;
498 ret_val = hw->eeprom.ops.read(hw, IXGBE_PBANUM0_PTR, &data);
500 hw_dbg(hw, "NVM Read Error\n");
504 ret_val = hw->eeprom.ops.read(hw, IXGBE_PBANUM1_PTR, &pba_ptr);
506 hw_dbg(hw, "NVM Read Error\n");
511 * if data is not ptr guard the PBA must be in legacy format which
512 * means pba_ptr is actually our second data word for the PBA number
513 * and we can decode it into an ascii string
515 if (data != IXGBE_PBANUM_PTR_GUARD) {
516 hw_dbg(hw, "NVM PBA number is not stored as string\n");
518 /* we will need 11 characters to store the PBA */
519 if (pba_num_size < 11) {
520 hw_dbg(hw, "PBA string buffer too small\n");
521 return IXGBE_ERR_NO_SPACE;
524 /* extract hex string from data and pba_ptr */
525 pba_num[0] = (data >> 12) & 0xF;
526 pba_num[1] = (data >> 8) & 0xF;
527 pba_num[2] = (data >> 4) & 0xF;
528 pba_num[3] = data & 0xF;
529 pba_num[4] = (pba_ptr >> 12) & 0xF;
530 pba_num[5] = (pba_ptr >> 8) & 0xF;
533 pba_num[8] = (pba_ptr >> 4) & 0xF;
534 pba_num[9] = pba_ptr & 0xF;
536 /* put a null character on the end of our string */
539 /* switch all the data but the '-' to hex char */
540 for (offset = 0; offset < 10; offset++) {
541 if (pba_num[offset] < 0xA)
542 pba_num[offset] += '0';
543 else if (pba_num[offset] < 0x10)
544 pba_num[offset] += 'A' - 0xA;
550 ret_val = hw->eeprom.ops.read(hw, pba_ptr, &length);
552 hw_dbg(hw, "NVM Read Error\n");
556 if (length == 0xFFFF || length == 0) {
557 hw_dbg(hw, "NVM PBA number section invalid length\n");
558 return IXGBE_ERR_PBA_SECTION;
561 /* check if pba_num buffer is big enough */
562 if (pba_num_size < (((u32)length * 2) - 1)) {
563 hw_dbg(hw, "PBA string buffer too small\n");
564 return IXGBE_ERR_NO_SPACE;
567 /* trim pba length from start of string */
571 for (offset = 0; offset < length; offset++) {
572 ret_val = hw->eeprom.ops.read(hw, pba_ptr + offset, &data);
574 hw_dbg(hw, "NVM Read Error\n");
577 pba_num[offset * 2] = (u8)(data >> 8);
578 pba_num[(offset * 2) + 1] = (u8)(data & 0xFF);
580 pba_num[offset * 2] = '\0';
586 * ixgbe_get_mac_addr_generic - Generic get MAC address
587 * @hw: pointer to hardware structure
588 * @mac_addr: Adapter MAC address
590 * Reads the adapter's MAC address from first Receive Address Register (RAR0)
591 * A reset of the adapter must be performed prior to calling this function
592 * in order for the MAC address to have been loaded from the EEPROM into RAR0
594 s32 ixgbe_get_mac_addr_generic(struct ixgbe_hw *hw, u8 *mac_addr)
600 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(0));
601 rar_low = IXGBE_READ_REG(hw, IXGBE_RAL(0));
603 for (i = 0; i < 4; i++)
604 mac_addr[i] = (u8)(rar_low >> (i*8));
606 for (i = 0; i < 2; i++)
607 mac_addr[i+4] = (u8)(rar_high >> (i*8));
612 enum ixgbe_bus_width ixgbe_convert_bus_width(u16 link_status)
614 switch (link_status & IXGBE_PCI_LINK_WIDTH) {
615 case IXGBE_PCI_LINK_WIDTH_1:
616 return ixgbe_bus_width_pcie_x1;
617 case IXGBE_PCI_LINK_WIDTH_2:
618 return ixgbe_bus_width_pcie_x2;
619 case IXGBE_PCI_LINK_WIDTH_4:
620 return ixgbe_bus_width_pcie_x4;
621 case IXGBE_PCI_LINK_WIDTH_8:
622 return ixgbe_bus_width_pcie_x8;
624 return ixgbe_bus_width_unknown;
628 enum ixgbe_bus_speed ixgbe_convert_bus_speed(u16 link_status)
630 switch (link_status & IXGBE_PCI_LINK_SPEED) {
631 case IXGBE_PCI_LINK_SPEED_2500:
632 return ixgbe_bus_speed_2500;
633 case IXGBE_PCI_LINK_SPEED_5000:
634 return ixgbe_bus_speed_5000;
635 case IXGBE_PCI_LINK_SPEED_8000:
636 return ixgbe_bus_speed_8000;
638 return ixgbe_bus_speed_unknown;
643 * ixgbe_get_bus_info_generic - Generic set PCI bus info
644 * @hw: pointer to hardware structure
646 * Sets the PCI bus info (speed, width, type) within the ixgbe_hw structure
648 s32 ixgbe_get_bus_info_generic(struct ixgbe_hw *hw)
650 struct ixgbe_adapter *adapter = hw->back;
651 struct ixgbe_mac_info *mac = &hw->mac;
654 hw->bus.type = ixgbe_bus_type_pci_express;
656 /* Get the negotiated link width and speed from PCI config space */
657 pci_read_config_word(adapter->pdev, IXGBE_PCI_LINK_STATUS,
660 hw->bus.width = ixgbe_convert_bus_width(link_status);
661 hw->bus.speed = ixgbe_convert_bus_speed(link_status);
663 mac->ops.set_lan_id(hw);
669 * ixgbe_set_lan_id_multi_port_pcie - Set LAN id for PCIe multiple port devices
670 * @hw: pointer to the HW structure
672 * Determines the LAN function id by reading memory-mapped registers
673 * and swaps the port value if requested.
675 void ixgbe_set_lan_id_multi_port_pcie(struct ixgbe_hw *hw)
677 struct ixgbe_bus_info *bus = &hw->bus;
680 reg = IXGBE_READ_REG(hw, IXGBE_STATUS);
681 bus->func = (reg & IXGBE_STATUS_LAN_ID) >> IXGBE_STATUS_LAN_ID_SHIFT;
682 bus->lan_id = bus->func;
684 /* check for a port swap */
685 reg = IXGBE_READ_REG(hw, IXGBE_FACTPS);
686 if (reg & IXGBE_FACTPS_LFS)
691 * ixgbe_stop_adapter_generic - Generic stop Tx/Rx units
692 * @hw: pointer to hardware structure
694 * Sets the adapter_stopped flag within ixgbe_hw struct. Clears interrupts,
695 * disables transmit and receive units. The adapter_stopped flag is used by
696 * the shared code and drivers to determine if the adapter is in a stopped
697 * state and should not touch the hardware.
699 s32 ixgbe_stop_adapter_generic(struct ixgbe_hw *hw)
705 * Set the adapter_stopped flag so other driver functions stop touching
708 hw->adapter_stopped = true;
710 /* Disable the receive unit */
711 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, 0);
713 /* Clear interrupt mask to stop interrupts from being generated */
714 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK);
716 /* Clear any pending interrupts, flush previous writes */
717 IXGBE_READ_REG(hw, IXGBE_EICR);
719 /* Disable the transmit unit. Each queue must be disabled. */
720 for (i = 0; i < hw->mac.max_tx_queues; i++)
721 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(i), IXGBE_TXDCTL_SWFLSH);
723 /* Disable the receive unit by stopping each queue */
724 for (i = 0; i < hw->mac.max_rx_queues; i++) {
725 reg_val = IXGBE_READ_REG(hw, IXGBE_RXDCTL(i));
726 reg_val &= ~IXGBE_RXDCTL_ENABLE;
727 reg_val |= IXGBE_RXDCTL_SWFLSH;
728 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(i), reg_val);
731 /* flush all queues disables */
732 IXGBE_WRITE_FLUSH(hw);
733 usleep_range(1000, 2000);
736 * Prevent the PCI-E bus from from hanging by disabling PCI-E master
737 * access and verify no pending requests
739 return ixgbe_disable_pcie_master(hw);
743 * ixgbe_led_on_generic - Turns on the software controllable LEDs.
744 * @hw: pointer to hardware structure
745 * @index: led number to turn on
747 s32 ixgbe_led_on_generic(struct ixgbe_hw *hw, u32 index)
749 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
751 /* To turn on the LED, set mode to ON. */
752 led_reg &= ~IXGBE_LED_MODE_MASK(index);
753 led_reg |= IXGBE_LED_ON << IXGBE_LED_MODE_SHIFT(index);
754 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
755 IXGBE_WRITE_FLUSH(hw);
761 * ixgbe_led_off_generic - Turns off the software controllable LEDs.
762 * @hw: pointer to hardware structure
763 * @index: led number to turn off
765 s32 ixgbe_led_off_generic(struct ixgbe_hw *hw, u32 index)
767 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
769 /* To turn off the LED, set mode to OFF. */
770 led_reg &= ~IXGBE_LED_MODE_MASK(index);
771 led_reg |= IXGBE_LED_OFF << IXGBE_LED_MODE_SHIFT(index);
772 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
773 IXGBE_WRITE_FLUSH(hw);
779 * ixgbe_init_eeprom_params_generic - Initialize EEPROM params
780 * @hw: pointer to hardware structure
782 * Initializes the EEPROM parameters ixgbe_eeprom_info within the
783 * ixgbe_hw struct in order to set up EEPROM access.
785 s32 ixgbe_init_eeprom_params_generic(struct ixgbe_hw *hw)
787 struct ixgbe_eeprom_info *eeprom = &hw->eeprom;
791 if (eeprom->type == ixgbe_eeprom_uninitialized) {
792 eeprom->type = ixgbe_eeprom_none;
793 /* Set default semaphore delay to 10ms which is a well
795 eeprom->semaphore_delay = 10;
796 /* Clear EEPROM page size, it will be initialized as needed */
797 eeprom->word_page_size = 0;
800 * Check for EEPROM present first.
801 * If not present leave as none
803 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
804 if (eec & IXGBE_EEC_PRES) {
805 eeprom->type = ixgbe_eeprom_spi;
808 * SPI EEPROM is assumed here. This code would need to
809 * change if a future EEPROM is not SPI.
811 eeprom_size = (u16)((eec & IXGBE_EEC_SIZE) >>
812 IXGBE_EEC_SIZE_SHIFT);
813 eeprom->word_size = 1 << (eeprom_size +
814 IXGBE_EEPROM_WORD_SIZE_SHIFT);
817 if (eec & IXGBE_EEC_ADDR_SIZE)
818 eeprom->address_bits = 16;
820 eeprom->address_bits = 8;
821 hw_dbg(hw, "Eeprom params: type = %d, size = %d, address bits: "
822 "%d\n", eeprom->type, eeprom->word_size,
823 eeprom->address_bits);
830 * ixgbe_write_eeprom_buffer_bit_bang_generic - Write EEPROM using bit-bang
831 * @hw: pointer to hardware structure
832 * @offset: offset within the EEPROM to write
833 * @words: number of words
834 * @data: 16 bit word(s) to write to EEPROM
836 * Reads 16 bit word(s) from EEPROM through bit-bang method
838 s32 ixgbe_write_eeprom_buffer_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
839 u16 words, u16 *data)
844 hw->eeprom.ops.init_params(hw);
847 status = IXGBE_ERR_INVALID_ARGUMENT;
851 if (offset + words > hw->eeprom.word_size) {
852 status = IXGBE_ERR_EEPROM;
857 * The EEPROM page size cannot be queried from the chip. We do lazy
858 * initialization. It is worth to do that when we write large buffer.
860 if ((hw->eeprom.word_page_size == 0) &&
861 (words > IXGBE_EEPROM_PAGE_SIZE_MAX))
862 ixgbe_detect_eeprom_page_size_generic(hw, offset);
865 * We cannot hold synchronization semaphores for too long
866 * to avoid other entity starvation. However it is more efficient
867 * to read in bursts than synchronizing access for each word.
869 for (i = 0; i < words; i += IXGBE_EEPROM_RD_BUFFER_MAX_COUNT) {
870 count = (words - i) / IXGBE_EEPROM_RD_BUFFER_MAX_COUNT > 0 ?
871 IXGBE_EEPROM_RD_BUFFER_MAX_COUNT : (words - i);
872 status = ixgbe_write_eeprom_buffer_bit_bang(hw, offset + i,
884 * ixgbe_write_eeprom_buffer_bit_bang - Writes 16 bit word(s) to EEPROM
885 * @hw: pointer to hardware structure
886 * @offset: offset within the EEPROM to be written to
887 * @words: number of word(s)
888 * @data: 16 bit word(s) to be written to the EEPROM
890 * If ixgbe_eeprom_update_checksum is not called after this function, the
891 * EEPROM will most likely contain an invalid checksum.
893 static s32 ixgbe_write_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset,
894 u16 words, u16 *data)
900 u8 write_opcode = IXGBE_EEPROM_WRITE_OPCODE_SPI;
902 /* Prepare the EEPROM for writing */
903 status = ixgbe_acquire_eeprom(hw);
906 if (ixgbe_ready_eeprom(hw) != 0) {
907 ixgbe_release_eeprom(hw);
908 status = IXGBE_ERR_EEPROM;
913 for (i = 0; i < words; i++) {
914 ixgbe_standby_eeprom(hw);
916 /* Send the WRITE ENABLE command (8 bit opcode ) */
917 ixgbe_shift_out_eeprom_bits(hw,
918 IXGBE_EEPROM_WREN_OPCODE_SPI,
919 IXGBE_EEPROM_OPCODE_BITS);
921 ixgbe_standby_eeprom(hw);
924 * Some SPI eeproms use the 8th address bit embedded
927 if ((hw->eeprom.address_bits == 8) &&
928 ((offset + i) >= 128))
929 write_opcode |= IXGBE_EEPROM_A8_OPCODE_SPI;
931 /* Send the Write command (8-bit opcode + addr) */
932 ixgbe_shift_out_eeprom_bits(hw, write_opcode,
933 IXGBE_EEPROM_OPCODE_BITS);
934 ixgbe_shift_out_eeprom_bits(hw, (u16)((offset + i) * 2),
935 hw->eeprom.address_bits);
937 page_size = hw->eeprom.word_page_size;
939 /* Send the data in burst via SPI*/
942 word = (word >> 8) | (word << 8);
943 ixgbe_shift_out_eeprom_bits(hw, word, 16);
948 /* do not wrap around page */
949 if (((offset + i) & (page_size - 1)) ==
952 } while (++i < words);
954 ixgbe_standby_eeprom(hw);
955 usleep_range(10000, 20000);
957 /* Done with writing - release the EEPROM */
958 ixgbe_release_eeprom(hw);
965 * ixgbe_write_eeprom_generic - Writes 16 bit value to EEPROM
966 * @hw: pointer to hardware structure
967 * @offset: offset within the EEPROM to be written to
968 * @data: 16 bit word to be written to the EEPROM
970 * If ixgbe_eeprom_update_checksum is not called after this function, the
971 * EEPROM will most likely contain an invalid checksum.
973 s32 ixgbe_write_eeprom_generic(struct ixgbe_hw *hw, u16 offset, u16 data)
977 hw->eeprom.ops.init_params(hw);
979 if (offset >= hw->eeprom.word_size) {
980 status = IXGBE_ERR_EEPROM;
984 status = ixgbe_write_eeprom_buffer_bit_bang(hw, offset, 1, &data);
991 * ixgbe_read_eeprom_buffer_bit_bang_generic - Read EEPROM using bit-bang
992 * @hw: pointer to hardware structure
993 * @offset: offset within the EEPROM to be read
994 * @words: number of word(s)
995 * @data: read 16 bit words(s) from EEPROM
997 * Reads 16 bit word(s) from EEPROM through bit-bang method
999 s32 ixgbe_read_eeprom_buffer_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
1000 u16 words, u16 *data)
1005 hw->eeprom.ops.init_params(hw);
1008 status = IXGBE_ERR_INVALID_ARGUMENT;
1012 if (offset + words > hw->eeprom.word_size) {
1013 status = IXGBE_ERR_EEPROM;
1018 * We cannot hold synchronization semaphores for too long
1019 * to avoid other entity starvation. However it is more efficient
1020 * to read in bursts than synchronizing access for each word.
1022 for (i = 0; i < words; i += IXGBE_EEPROM_RD_BUFFER_MAX_COUNT) {
1023 count = (words - i) / IXGBE_EEPROM_RD_BUFFER_MAX_COUNT > 0 ?
1024 IXGBE_EEPROM_RD_BUFFER_MAX_COUNT : (words - i);
1026 status = ixgbe_read_eeprom_buffer_bit_bang(hw, offset + i,
1038 * ixgbe_read_eeprom_buffer_bit_bang - Read EEPROM using bit-bang
1039 * @hw: pointer to hardware structure
1040 * @offset: offset within the EEPROM to be read
1041 * @words: number of word(s)
1042 * @data: read 16 bit word(s) from EEPROM
1044 * Reads 16 bit word(s) from EEPROM through bit-bang method
1046 static s32 ixgbe_read_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset,
1047 u16 words, u16 *data)
1051 u8 read_opcode = IXGBE_EEPROM_READ_OPCODE_SPI;
1054 /* Prepare the EEPROM for reading */
1055 status = ixgbe_acquire_eeprom(hw);
1058 if (ixgbe_ready_eeprom(hw) != 0) {
1059 ixgbe_release_eeprom(hw);
1060 status = IXGBE_ERR_EEPROM;
1065 for (i = 0; i < words; i++) {
1066 ixgbe_standby_eeprom(hw);
1068 * Some SPI eeproms use the 8th address bit embedded
1071 if ((hw->eeprom.address_bits == 8) &&
1072 ((offset + i) >= 128))
1073 read_opcode |= IXGBE_EEPROM_A8_OPCODE_SPI;
1075 /* Send the READ command (opcode + addr) */
1076 ixgbe_shift_out_eeprom_bits(hw, read_opcode,
1077 IXGBE_EEPROM_OPCODE_BITS);
1078 ixgbe_shift_out_eeprom_bits(hw, (u16)((offset + i) * 2),
1079 hw->eeprom.address_bits);
1081 /* Read the data. */
1082 word_in = ixgbe_shift_in_eeprom_bits(hw, 16);
1083 data[i] = (word_in >> 8) | (word_in << 8);
1086 /* End this read operation */
1087 ixgbe_release_eeprom(hw);
1094 * ixgbe_read_eeprom_bit_bang_generic - Read EEPROM word using bit-bang
1095 * @hw: pointer to hardware structure
1096 * @offset: offset within the EEPROM to be read
1097 * @data: read 16 bit value from EEPROM
1099 * Reads 16 bit value from EEPROM through bit-bang method
1101 s32 ixgbe_read_eeprom_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
1106 hw->eeprom.ops.init_params(hw);
1108 if (offset >= hw->eeprom.word_size) {
1109 status = IXGBE_ERR_EEPROM;
1113 status = ixgbe_read_eeprom_buffer_bit_bang(hw, offset, 1, data);
1120 * ixgbe_read_eerd_buffer_generic - Read EEPROM word(s) using EERD
1121 * @hw: pointer to hardware structure
1122 * @offset: offset of word in the EEPROM to read
1123 * @words: number of word(s)
1124 * @data: 16 bit word(s) from the EEPROM
1126 * Reads a 16 bit word(s) from the EEPROM using the EERD register.
1128 s32 ixgbe_read_eerd_buffer_generic(struct ixgbe_hw *hw, u16 offset,
1129 u16 words, u16 *data)
1135 hw->eeprom.ops.init_params(hw);
1138 status = IXGBE_ERR_INVALID_ARGUMENT;
1142 if (offset >= hw->eeprom.word_size) {
1143 status = IXGBE_ERR_EEPROM;
1147 for (i = 0; i < words; i++) {
1148 eerd = ((offset + i) << IXGBE_EEPROM_RW_ADDR_SHIFT) |
1149 IXGBE_EEPROM_RW_REG_START;
1151 IXGBE_WRITE_REG(hw, IXGBE_EERD, eerd);
1152 status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_READ);
1155 data[i] = (IXGBE_READ_REG(hw, IXGBE_EERD) >>
1156 IXGBE_EEPROM_RW_REG_DATA);
1158 hw_dbg(hw, "Eeprom read timed out\n");
1167 * ixgbe_detect_eeprom_page_size_generic - Detect EEPROM page size
1168 * @hw: pointer to hardware structure
1169 * @offset: offset within the EEPROM to be used as a scratch pad
1171 * Discover EEPROM page size by writing marching data at given offset.
1172 * This function is called only when we are writing a new large buffer
1173 * at given offset so the data would be overwritten anyway.
1175 static s32 ixgbe_detect_eeprom_page_size_generic(struct ixgbe_hw *hw,
1178 u16 data[IXGBE_EEPROM_PAGE_SIZE_MAX];
1182 for (i = 0; i < IXGBE_EEPROM_PAGE_SIZE_MAX; i++)
1185 hw->eeprom.word_page_size = IXGBE_EEPROM_PAGE_SIZE_MAX;
1186 status = ixgbe_write_eeprom_buffer_bit_bang(hw, offset,
1187 IXGBE_EEPROM_PAGE_SIZE_MAX, data);
1188 hw->eeprom.word_page_size = 0;
1192 status = ixgbe_read_eeprom_buffer_bit_bang(hw, offset, 1, data);
1197 * When writing in burst more than the actual page size
1198 * EEPROM address wraps around current page.
1200 hw->eeprom.word_page_size = IXGBE_EEPROM_PAGE_SIZE_MAX - data[0];
1202 hw_dbg(hw, "Detected EEPROM page size = %d words.",
1203 hw->eeprom.word_page_size);
1209 * ixgbe_read_eerd_generic - Read EEPROM word using EERD
1210 * @hw: pointer to hardware structure
1211 * @offset: offset of word in the EEPROM to read
1212 * @data: word read from the EEPROM
1214 * Reads a 16 bit word from the EEPROM using the EERD register.
1216 s32 ixgbe_read_eerd_generic(struct ixgbe_hw *hw, u16 offset, u16 *data)
1218 return ixgbe_read_eerd_buffer_generic(hw, offset, 1, data);
1222 * ixgbe_write_eewr_buffer_generic - Write EEPROM word(s) using EEWR
1223 * @hw: pointer to hardware structure
1224 * @offset: offset of word in the EEPROM to write
1225 * @words: number of words
1226 * @data: word(s) write to the EEPROM
1228 * Write a 16 bit word(s) to the EEPROM using the EEWR register.
1230 s32 ixgbe_write_eewr_buffer_generic(struct ixgbe_hw *hw, u16 offset,
1231 u16 words, u16 *data)
1237 hw->eeprom.ops.init_params(hw);
1240 status = IXGBE_ERR_INVALID_ARGUMENT;
1244 if (offset >= hw->eeprom.word_size) {
1245 status = IXGBE_ERR_EEPROM;
1249 for (i = 0; i < words; i++) {
1250 eewr = ((offset + i) << IXGBE_EEPROM_RW_ADDR_SHIFT) |
1251 (data[i] << IXGBE_EEPROM_RW_REG_DATA) |
1252 IXGBE_EEPROM_RW_REG_START;
1254 status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_WRITE);
1256 hw_dbg(hw, "Eeprom write EEWR timed out\n");
1260 IXGBE_WRITE_REG(hw, IXGBE_EEWR, eewr);
1262 status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_WRITE);
1264 hw_dbg(hw, "Eeprom write EEWR timed out\n");
1274 * ixgbe_write_eewr_generic - Write EEPROM word using EEWR
1275 * @hw: pointer to hardware structure
1276 * @offset: offset of word in the EEPROM to write
1277 * @data: word write to the EEPROM
1279 * Write a 16 bit word to the EEPROM using the EEWR register.
1281 s32 ixgbe_write_eewr_generic(struct ixgbe_hw *hw, u16 offset, u16 data)
1283 return ixgbe_write_eewr_buffer_generic(hw, offset, 1, &data);
1287 * ixgbe_poll_eerd_eewr_done - Poll EERD read or EEWR write status
1288 * @hw: pointer to hardware structure
1289 * @ee_reg: EEPROM flag for polling
1291 * Polls the status bit (bit 1) of the EERD or EEWR to determine when the
1292 * read or write is done respectively.
1294 static s32 ixgbe_poll_eerd_eewr_done(struct ixgbe_hw *hw, u32 ee_reg)
1298 s32 status = IXGBE_ERR_EEPROM;
1300 for (i = 0; i < IXGBE_EERD_EEWR_ATTEMPTS; i++) {
1301 if (ee_reg == IXGBE_NVM_POLL_READ)
1302 reg = IXGBE_READ_REG(hw, IXGBE_EERD);
1304 reg = IXGBE_READ_REG(hw, IXGBE_EEWR);
1306 if (reg & IXGBE_EEPROM_RW_REG_DONE) {
1316 * ixgbe_acquire_eeprom - Acquire EEPROM using bit-bang
1317 * @hw: pointer to hardware structure
1319 * Prepares EEPROM for access using bit-bang method. This function should
1320 * be called before issuing a command to the EEPROM.
1322 static s32 ixgbe_acquire_eeprom(struct ixgbe_hw *hw)
1328 if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) != 0)
1329 status = IXGBE_ERR_SWFW_SYNC;
1332 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1334 /* Request EEPROM Access */
1335 eec |= IXGBE_EEC_REQ;
1336 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1338 for (i = 0; i < IXGBE_EEPROM_GRANT_ATTEMPTS; i++) {
1339 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1340 if (eec & IXGBE_EEC_GNT)
1345 /* Release if grant not acquired */
1346 if (!(eec & IXGBE_EEC_GNT)) {
1347 eec &= ~IXGBE_EEC_REQ;
1348 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1349 hw_dbg(hw, "Could not acquire EEPROM grant\n");
1351 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
1352 status = IXGBE_ERR_EEPROM;
1355 /* Setup EEPROM for Read/Write */
1357 /* Clear CS and SK */
1358 eec &= ~(IXGBE_EEC_CS | IXGBE_EEC_SK);
1359 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1360 IXGBE_WRITE_FLUSH(hw);
1368 * ixgbe_get_eeprom_semaphore - Get hardware semaphore
1369 * @hw: pointer to hardware structure
1371 * Sets the hardware semaphores so EEPROM access can occur for bit-bang method
1373 static s32 ixgbe_get_eeprom_semaphore(struct ixgbe_hw *hw)
1375 s32 status = IXGBE_ERR_EEPROM;
1380 /* Get SMBI software semaphore between device drivers first */
1381 for (i = 0; i < timeout; i++) {
1383 * If the SMBI bit is 0 when we read it, then the bit will be
1384 * set and we have the semaphore
1386 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
1387 if (!(swsm & IXGBE_SWSM_SMBI)) {
1395 hw_dbg(hw, "Driver can't access the Eeprom - SMBI Semaphore "
1398 * this release is particularly important because our attempts
1399 * above to get the semaphore may have succeeded, and if there
1400 * was a timeout, we should unconditionally clear the semaphore
1401 * bits to free the driver to make progress
1403 ixgbe_release_eeprom_semaphore(hw);
1408 * If the SMBI bit is 0 when we read it, then the bit will be
1409 * set and we have the semaphore
1411 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
1412 if (!(swsm & IXGBE_SWSM_SMBI))
1416 /* Now get the semaphore between SW/FW through the SWESMBI bit */
1418 for (i = 0; i < timeout; i++) {
1419 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
1421 /* Set the SW EEPROM semaphore bit to request access */
1422 swsm |= IXGBE_SWSM_SWESMBI;
1423 IXGBE_WRITE_REG(hw, IXGBE_SWSM, swsm);
1426 * If we set the bit successfully then we got the
1429 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
1430 if (swsm & IXGBE_SWSM_SWESMBI)
1437 * Release semaphores and return error if SW EEPROM semaphore
1438 * was not granted because we don't have access to the EEPROM
1441 hw_dbg(hw, "SWESMBI Software EEPROM semaphore "
1443 ixgbe_release_eeprom_semaphore(hw);
1444 status = IXGBE_ERR_EEPROM;
1447 hw_dbg(hw, "Software semaphore SMBI between device drivers "
1455 * ixgbe_release_eeprom_semaphore - Release hardware semaphore
1456 * @hw: pointer to hardware structure
1458 * This function clears hardware semaphore bits.
1460 static void ixgbe_release_eeprom_semaphore(struct ixgbe_hw *hw)
1464 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
1466 /* Release both semaphores by writing 0 to the bits SWESMBI and SMBI */
1467 swsm &= ~(IXGBE_SWSM_SWESMBI | IXGBE_SWSM_SMBI);
1468 IXGBE_WRITE_REG(hw, IXGBE_SWSM, swsm);
1469 IXGBE_WRITE_FLUSH(hw);
1473 * ixgbe_ready_eeprom - Polls for EEPROM ready
1474 * @hw: pointer to hardware structure
1476 static s32 ixgbe_ready_eeprom(struct ixgbe_hw *hw)
1483 * Read "Status Register" repeatedly until the LSB is cleared. The
1484 * EEPROM will signal that the command has been completed by clearing
1485 * bit 0 of the internal status register. If it's not cleared within
1486 * 5 milliseconds, then error out.
1488 for (i = 0; i < IXGBE_EEPROM_MAX_RETRY_SPI; i += 5) {
1489 ixgbe_shift_out_eeprom_bits(hw, IXGBE_EEPROM_RDSR_OPCODE_SPI,
1490 IXGBE_EEPROM_OPCODE_BITS);
1491 spi_stat_reg = (u8)ixgbe_shift_in_eeprom_bits(hw, 8);
1492 if (!(spi_stat_reg & IXGBE_EEPROM_STATUS_RDY_SPI))
1496 ixgbe_standby_eeprom(hw);
1500 * On some parts, SPI write time could vary from 0-20mSec on 3.3V
1501 * devices (and only 0-5mSec on 5V devices)
1503 if (i >= IXGBE_EEPROM_MAX_RETRY_SPI) {
1504 hw_dbg(hw, "SPI EEPROM Status error\n");
1505 status = IXGBE_ERR_EEPROM;
1512 * ixgbe_standby_eeprom - Returns EEPROM to a "standby" state
1513 * @hw: pointer to hardware structure
1515 static void ixgbe_standby_eeprom(struct ixgbe_hw *hw)
1519 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1521 /* Toggle CS to flush commands */
1522 eec |= IXGBE_EEC_CS;
1523 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1524 IXGBE_WRITE_FLUSH(hw);
1526 eec &= ~IXGBE_EEC_CS;
1527 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1528 IXGBE_WRITE_FLUSH(hw);
1533 * ixgbe_shift_out_eeprom_bits - Shift data bits out to the EEPROM.
1534 * @hw: pointer to hardware structure
1535 * @data: data to send to the EEPROM
1536 * @count: number of bits to shift out
1538 static void ixgbe_shift_out_eeprom_bits(struct ixgbe_hw *hw, u16 data,
1545 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1548 * Mask is used to shift "count" bits of "data" out to the EEPROM
1549 * one bit at a time. Determine the starting bit based on count
1551 mask = 0x01 << (count - 1);
1553 for (i = 0; i < count; i++) {
1555 * A "1" is shifted out to the EEPROM by setting bit "DI" to a
1556 * "1", and then raising and then lowering the clock (the SK
1557 * bit controls the clock input to the EEPROM). A "0" is
1558 * shifted out to the EEPROM by setting "DI" to "0" and then
1559 * raising and then lowering the clock.
1562 eec |= IXGBE_EEC_DI;
1564 eec &= ~IXGBE_EEC_DI;
1566 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1567 IXGBE_WRITE_FLUSH(hw);
1571 ixgbe_raise_eeprom_clk(hw, &eec);
1572 ixgbe_lower_eeprom_clk(hw, &eec);
1575 * Shift mask to signify next bit of data to shift in to the
1581 /* We leave the "DI" bit set to "0" when we leave this routine. */
1582 eec &= ~IXGBE_EEC_DI;
1583 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1584 IXGBE_WRITE_FLUSH(hw);
1588 * ixgbe_shift_in_eeprom_bits - Shift data bits in from the EEPROM
1589 * @hw: pointer to hardware structure
1591 static u16 ixgbe_shift_in_eeprom_bits(struct ixgbe_hw *hw, u16 count)
1598 * In order to read a register from the EEPROM, we need to shift
1599 * 'count' bits in from the EEPROM. Bits are "shifted in" by raising
1600 * the clock input to the EEPROM (setting the SK bit), and then reading
1601 * the value of the "DO" bit. During this "shifting in" process the
1602 * "DI" bit should always be clear.
1604 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1606 eec &= ~(IXGBE_EEC_DO | IXGBE_EEC_DI);
1608 for (i = 0; i < count; i++) {
1610 ixgbe_raise_eeprom_clk(hw, &eec);
1612 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1614 eec &= ~(IXGBE_EEC_DI);
1615 if (eec & IXGBE_EEC_DO)
1618 ixgbe_lower_eeprom_clk(hw, &eec);
1625 * ixgbe_raise_eeprom_clk - Raises the EEPROM's clock input.
1626 * @hw: pointer to hardware structure
1627 * @eec: EEC register's current value
1629 static void ixgbe_raise_eeprom_clk(struct ixgbe_hw *hw, u32 *eec)
1632 * Raise the clock input to the EEPROM
1633 * (setting the SK bit), then delay
1635 *eec = *eec | IXGBE_EEC_SK;
1636 IXGBE_WRITE_REG(hw, IXGBE_EEC, *eec);
1637 IXGBE_WRITE_FLUSH(hw);
1642 * ixgbe_lower_eeprom_clk - Lowers the EEPROM's clock input.
1643 * @hw: pointer to hardware structure
1644 * @eecd: EECD's current value
1646 static void ixgbe_lower_eeprom_clk(struct ixgbe_hw *hw, u32 *eec)
1649 * Lower the clock input to the EEPROM (clearing the SK bit), then
1652 *eec = *eec & ~IXGBE_EEC_SK;
1653 IXGBE_WRITE_REG(hw, IXGBE_EEC, *eec);
1654 IXGBE_WRITE_FLUSH(hw);
1659 * ixgbe_release_eeprom - Release EEPROM, release semaphores
1660 * @hw: pointer to hardware structure
1662 static void ixgbe_release_eeprom(struct ixgbe_hw *hw)
1666 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1668 eec |= IXGBE_EEC_CS; /* Pull CS high */
1669 eec &= ~IXGBE_EEC_SK; /* Lower SCK */
1671 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1672 IXGBE_WRITE_FLUSH(hw);
1676 /* Stop requesting EEPROM access */
1677 eec &= ~IXGBE_EEC_REQ;
1678 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1680 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
1683 * Delay before attempt to obtain semaphore again to allow FW
1684 * access. semaphore_delay is in ms we need us for usleep_range
1686 usleep_range(hw->eeprom.semaphore_delay * 1000,
1687 hw->eeprom.semaphore_delay * 2000);
1691 * ixgbe_calc_eeprom_checksum_generic - Calculates and returns the checksum
1692 * @hw: pointer to hardware structure
1694 u16 ixgbe_calc_eeprom_checksum_generic(struct ixgbe_hw *hw)
1703 /* Include 0x0-0x3F in the checksum */
1704 for (i = 0; i < IXGBE_EEPROM_CHECKSUM; i++) {
1705 if (hw->eeprom.ops.read(hw, i, &word) != 0) {
1706 hw_dbg(hw, "EEPROM read failed\n");
1712 /* Include all data from pointers except for the fw pointer */
1713 for (i = IXGBE_PCIE_ANALOG_PTR; i < IXGBE_FW_PTR; i++) {
1714 hw->eeprom.ops.read(hw, i, &pointer);
1716 /* Make sure the pointer seems valid */
1717 if (pointer != 0xFFFF && pointer != 0) {
1718 hw->eeprom.ops.read(hw, pointer, &length);
1720 if (length != 0xFFFF && length != 0) {
1721 for (j = pointer+1; j <= pointer+length; j++) {
1722 hw->eeprom.ops.read(hw, j, &word);
1729 checksum = (u16)IXGBE_EEPROM_SUM - checksum;
1735 * ixgbe_validate_eeprom_checksum_generic - Validate EEPROM checksum
1736 * @hw: pointer to hardware structure
1737 * @checksum_val: calculated checksum
1739 * Performs checksum calculation and validates the EEPROM checksum. If the
1740 * caller does not need checksum_val, the value can be NULL.
1742 s32 ixgbe_validate_eeprom_checksum_generic(struct ixgbe_hw *hw,
1747 u16 read_checksum = 0;
1750 * Read the first word from the EEPROM. If this times out or fails, do
1751 * not continue or we could be in for a very long wait while every
1754 status = hw->eeprom.ops.read(hw, 0, &checksum);
1757 checksum = hw->eeprom.ops.calc_checksum(hw);
1759 hw->eeprom.ops.read(hw, IXGBE_EEPROM_CHECKSUM, &read_checksum);
1762 * Verify read checksum from EEPROM is the same as
1763 * calculated checksum
1765 if (read_checksum != checksum)
1766 status = IXGBE_ERR_EEPROM_CHECKSUM;
1768 /* If the user cares, return the calculated checksum */
1770 *checksum_val = checksum;
1772 hw_dbg(hw, "EEPROM read failed\n");
1779 * ixgbe_update_eeprom_checksum_generic - Updates the EEPROM checksum
1780 * @hw: pointer to hardware structure
1782 s32 ixgbe_update_eeprom_checksum_generic(struct ixgbe_hw *hw)
1788 * Read the first word from the EEPROM. If this times out or fails, do
1789 * not continue or we could be in for a very long wait while every
1792 status = hw->eeprom.ops.read(hw, 0, &checksum);
1795 checksum = hw->eeprom.ops.calc_checksum(hw);
1796 status = hw->eeprom.ops.write(hw, IXGBE_EEPROM_CHECKSUM,
1799 hw_dbg(hw, "EEPROM read failed\n");
1806 * ixgbe_set_rar_generic - Set Rx address register
1807 * @hw: pointer to hardware structure
1808 * @index: Receive address register to write
1809 * @addr: Address to put into receive address register
1810 * @vmdq: VMDq "set" or "pool" index
1811 * @enable_addr: set flag that address is active
1813 * Puts an ethernet address into a receive address register.
1815 s32 ixgbe_set_rar_generic(struct ixgbe_hw *hw, u32 index, u8 *addr, u32 vmdq,
1818 u32 rar_low, rar_high;
1819 u32 rar_entries = hw->mac.num_rar_entries;
1821 /* Make sure we are using a valid rar index range */
1822 if (index >= rar_entries) {
1823 hw_dbg(hw, "RAR index %d is out of range.\n", index);
1824 return IXGBE_ERR_INVALID_ARGUMENT;
1827 /* setup VMDq pool selection before this RAR gets enabled */
1828 hw->mac.ops.set_vmdq(hw, index, vmdq);
1831 * HW expects these in little endian so we reverse the byte
1832 * order from network order (big endian) to little endian
1834 rar_low = ((u32)addr[0] |
1835 ((u32)addr[1] << 8) |
1836 ((u32)addr[2] << 16) |
1837 ((u32)addr[3] << 24));
1839 * Some parts put the VMDq setting in the extra RAH bits,
1840 * so save everything except the lower 16 bits that hold part
1841 * of the address and the address valid bit.
1843 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index));
1844 rar_high &= ~(0x0000FFFF | IXGBE_RAH_AV);
1845 rar_high |= ((u32)addr[4] | ((u32)addr[5] << 8));
1847 if (enable_addr != 0)
1848 rar_high |= IXGBE_RAH_AV;
1850 IXGBE_WRITE_REG(hw, IXGBE_RAL(index), rar_low);
1851 IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high);
1857 * ixgbe_clear_rar_generic - Remove Rx address register
1858 * @hw: pointer to hardware structure
1859 * @index: Receive address register to write
1861 * Clears an ethernet address from a receive address register.
1863 s32 ixgbe_clear_rar_generic(struct ixgbe_hw *hw, u32 index)
1866 u32 rar_entries = hw->mac.num_rar_entries;
1868 /* Make sure we are using a valid rar index range */
1869 if (index >= rar_entries) {
1870 hw_dbg(hw, "RAR index %d is out of range.\n", index);
1871 return IXGBE_ERR_INVALID_ARGUMENT;
1875 * Some parts put the VMDq setting in the extra RAH bits,
1876 * so save everything except the lower 16 bits that hold part
1877 * of the address and the address valid bit.
1879 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index));
1880 rar_high &= ~(0x0000FFFF | IXGBE_RAH_AV);
1882 IXGBE_WRITE_REG(hw, IXGBE_RAL(index), 0);
1883 IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high);
1885 /* clear VMDq pool/queue selection for this RAR */
1886 hw->mac.ops.clear_vmdq(hw, index, IXGBE_CLEAR_VMDQ_ALL);
1892 * ixgbe_init_rx_addrs_generic - Initializes receive address filters.
1893 * @hw: pointer to hardware structure
1895 * Places the MAC address in receive address register 0 and clears the rest
1896 * of the receive address registers. Clears the multicast table. Assumes
1897 * the receiver is in reset when the routine is called.
1899 s32 ixgbe_init_rx_addrs_generic(struct ixgbe_hw *hw)
1902 u32 rar_entries = hw->mac.num_rar_entries;
1905 * If the current mac address is valid, assume it is a software override
1906 * to the permanent address.
1907 * Otherwise, use the permanent address from the eeprom.
1909 if (!is_valid_ether_addr(hw->mac.addr)) {
1910 /* Get the MAC address from the RAR0 for later reference */
1911 hw->mac.ops.get_mac_addr(hw, hw->mac.addr);
1913 hw_dbg(hw, " Keeping Current RAR0 Addr =%pM\n", hw->mac.addr);
1915 /* Setup the receive address. */
1916 hw_dbg(hw, "Overriding MAC Address in RAR[0]\n");
1917 hw_dbg(hw, " New MAC Addr =%pM\n", hw->mac.addr);
1919 hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0, IXGBE_RAH_AV);
1921 /* clear VMDq pool/queue selection for RAR 0 */
1922 hw->mac.ops.clear_vmdq(hw, 0, IXGBE_CLEAR_VMDQ_ALL);
1924 hw->addr_ctrl.overflow_promisc = 0;
1926 hw->addr_ctrl.rar_used_count = 1;
1928 /* Zero out the other receive addresses. */
1929 hw_dbg(hw, "Clearing RAR[1-%d]\n", rar_entries - 1);
1930 for (i = 1; i < rar_entries; i++) {
1931 IXGBE_WRITE_REG(hw, IXGBE_RAL(i), 0);
1932 IXGBE_WRITE_REG(hw, IXGBE_RAH(i), 0);
1936 hw->addr_ctrl.mta_in_use = 0;
1937 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, hw->mac.mc_filter_type);
1939 hw_dbg(hw, " Clearing MTA\n");
1940 for (i = 0; i < hw->mac.mcft_size; i++)
1941 IXGBE_WRITE_REG(hw, IXGBE_MTA(i), 0);
1943 if (hw->mac.ops.init_uta_tables)
1944 hw->mac.ops.init_uta_tables(hw);
1950 * ixgbe_mta_vector - Determines bit-vector in multicast table to set
1951 * @hw: pointer to hardware structure
1952 * @mc_addr: the multicast address
1954 * Extracts the 12 bits, from a multicast address, to determine which
1955 * bit-vector to set in the multicast table. The hardware uses 12 bits, from
1956 * incoming rx multicast addresses, to determine the bit-vector to check in
1957 * the MTA. Which of the 4 combination, of 12-bits, the hardware uses is set
1958 * by the MO field of the MCSTCTRL. The MO field is set during initialization
1959 * to mc_filter_type.
1961 static s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr)
1965 switch (hw->mac.mc_filter_type) {
1966 case 0: /* use bits [47:36] of the address */
1967 vector = ((mc_addr[4] >> 4) | (((u16)mc_addr[5]) << 4));
1969 case 1: /* use bits [46:35] of the address */
1970 vector = ((mc_addr[4] >> 3) | (((u16)mc_addr[5]) << 5));
1972 case 2: /* use bits [45:34] of the address */
1973 vector = ((mc_addr[4] >> 2) | (((u16)mc_addr[5]) << 6));
1975 case 3: /* use bits [43:32] of the address */
1976 vector = ((mc_addr[4]) | (((u16)mc_addr[5]) << 8));
1978 default: /* Invalid mc_filter_type */
1979 hw_dbg(hw, "MC filter type param set incorrectly\n");
1983 /* vector can only be 12-bits or boundary will be exceeded */
1989 * ixgbe_set_mta - Set bit-vector in multicast table
1990 * @hw: pointer to hardware structure
1991 * @hash_value: Multicast address hash value
1993 * Sets the bit-vector in the multicast table.
1995 static void ixgbe_set_mta(struct ixgbe_hw *hw, u8 *mc_addr)
2001 hw->addr_ctrl.mta_in_use++;
2003 vector = ixgbe_mta_vector(hw, mc_addr);
2004 hw_dbg(hw, " bit-vector = 0x%03X\n", vector);
2007 * The MTA is a register array of 128 32-bit registers. It is treated
2008 * like an array of 4096 bits. We want to set bit
2009 * BitArray[vector_value]. So we figure out what register the bit is
2010 * in, read it, OR in the new bit, then write back the new value. The
2011 * register is determined by the upper 7 bits of the vector value and
2012 * the bit within that register are determined by the lower 5 bits of
2015 vector_reg = (vector >> 5) & 0x7F;
2016 vector_bit = vector & 0x1F;
2017 hw->mac.mta_shadow[vector_reg] |= (1 << vector_bit);
2021 * ixgbe_update_mc_addr_list_generic - Updates MAC list of multicast addresses
2022 * @hw: pointer to hardware structure
2023 * @netdev: pointer to net device structure
2025 * The given list replaces any existing list. Clears the MC addrs from receive
2026 * address registers and the multicast table. Uses unused receive address
2027 * registers for the first multicast addresses, and hashes the rest into the
2030 s32 ixgbe_update_mc_addr_list_generic(struct ixgbe_hw *hw,
2031 struct net_device *netdev)
2033 struct netdev_hw_addr *ha;
2037 * Set the new number of MC addresses that we are being requested to
2040 hw->addr_ctrl.num_mc_addrs = netdev_mc_count(netdev);
2041 hw->addr_ctrl.mta_in_use = 0;
2043 /* Clear mta_shadow */
2044 hw_dbg(hw, " Clearing MTA\n");
2045 memset(&hw->mac.mta_shadow, 0, sizeof(hw->mac.mta_shadow));
2047 /* Update mta shadow */
2048 netdev_for_each_mc_addr(ha, netdev) {
2049 hw_dbg(hw, " Adding the multicast addresses:\n");
2050 ixgbe_set_mta(hw, ha->addr);
2054 for (i = 0; i < hw->mac.mcft_size; i++)
2055 IXGBE_WRITE_REG_ARRAY(hw, IXGBE_MTA(0), i,
2056 hw->mac.mta_shadow[i]);
2058 if (hw->addr_ctrl.mta_in_use > 0)
2059 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL,
2060 IXGBE_MCSTCTRL_MFE | hw->mac.mc_filter_type);
2062 hw_dbg(hw, "ixgbe_update_mc_addr_list_generic Complete\n");
2067 * ixgbe_enable_mc_generic - Enable multicast address in RAR
2068 * @hw: pointer to hardware structure
2070 * Enables multicast address in RAR and the use of the multicast hash table.
2072 s32 ixgbe_enable_mc_generic(struct ixgbe_hw *hw)
2074 struct ixgbe_addr_filter_info *a = &hw->addr_ctrl;
2076 if (a->mta_in_use > 0)
2077 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, IXGBE_MCSTCTRL_MFE |
2078 hw->mac.mc_filter_type);
2084 * ixgbe_disable_mc_generic - Disable multicast address in RAR
2085 * @hw: pointer to hardware structure
2087 * Disables multicast address in RAR and the use of the multicast hash table.
2089 s32 ixgbe_disable_mc_generic(struct ixgbe_hw *hw)
2091 struct ixgbe_addr_filter_info *a = &hw->addr_ctrl;
2093 if (a->mta_in_use > 0)
2094 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, hw->mac.mc_filter_type);
2100 * ixgbe_fc_enable_generic - Enable flow control
2101 * @hw: pointer to hardware structure
2103 * Enable flow control according to the current settings.
2105 s32 ixgbe_fc_enable_generic(struct ixgbe_hw *hw)
2108 u32 mflcn_reg, fccfg_reg;
2114 * Validate the water mark configuration for packet buffer 0. Zero
2115 * water marks indicate that the packet buffer was not configured
2116 * and the watermarks for packet buffer 0 should always be configured.
2118 if (!hw->fc.low_water ||
2119 !hw->fc.high_water[0] ||
2120 !hw->fc.pause_time) {
2121 hw_dbg(hw, "Invalid water mark configuration\n");
2122 ret_val = IXGBE_ERR_INVALID_LINK_SETTINGS;
2126 /* Negotiate the fc mode to use */
2127 ixgbe_fc_autoneg(hw);
2129 /* Disable any previous flow control settings */
2130 mflcn_reg = IXGBE_READ_REG(hw, IXGBE_MFLCN);
2131 mflcn_reg &= ~(IXGBE_MFLCN_RPFCE_MASK | IXGBE_MFLCN_RFCE);
2133 fccfg_reg = IXGBE_READ_REG(hw, IXGBE_FCCFG);
2134 fccfg_reg &= ~(IXGBE_FCCFG_TFCE_802_3X | IXGBE_FCCFG_TFCE_PRIORITY);
2137 * The possible values of fc.current_mode are:
2138 * 0: Flow control is completely disabled
2139 * 1: Rx flow control is enabled (we can receive pause frames,
2140 * but not send pause frames).
2141 * 2: Tx flow control is enabled (we can send pause frames but
2142 * we do not support receiving pause frames).
2143 * 3: Both Rx and Tx flow control (symmetric) are enabled.
2146 switch (hw->fc.current_mode) {
2149 * Flow control is disabled by software override or autoneg.
2150 * The code below will actually disable it in the HW.
2153 case ixgbe_fc_rx_pause:
2155 * Rx Flow control is enabled and Tx Flow control is
2156 * disabled by software override. Since there really
2157 * isn't a way to advertise that we are capable of RX
2158 * Pause ONLY, we will advertise that we support both
2159 * symmetric and asymmetric Rx PAUSE. Later, we will
2160 * disable the adapter's ability to send PAUSE frames.
2162 mflcn_reg |= IXGBE_MFLCN_RFCE;
2164 case ixgbe_fc_tx_pause:
2166 * Tx Flow control is enabled, and Rx Flow control is
2167 * disabled by software override.
2169 fccfg_reg |= IXGBE_FCCFG_TFCE_802_3X;
2172 /* Flow control (both Rx and Tx) is enabled by SW override. */
2173 mflcn_reg |= IXGBE_MFLCN_RFCE;
2174 fccfg_reg |= IXGBE_FCCFG_TFCE_802_3X;
2177 hw_dbg(hw, "Flow control param set incorrectly\n");
2178 ret_val = IXGBE_ERR_CONFIG;
2183 /* Set 802.3x based flow control settings. */
2184 mflcn_reg |= IXGBE_MFLCN_DPF;
2185 IXGBE_WRITE_REG(hw, IXGBE_MFLCN, mflcn_reg);
2186 IXGBE_WRITE_REG(hw, IXGBE_FCCFG, fccfg_reg);
2188 fcrtl = (hw->fc.low_water << 10) | IXGBE_FCRTL_XONE;
2190 /* Set up and enable Rx high/low water mark thresholds, enable XON. */
2191 for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
2192 if ((hw->fc.current_mode & ixgbe_fc_tx_pause) &&
2193 hw->fc.high_water[i]) {
2194 IXGBE_WRITE_REG(hw, IXGBE_FCRTL_82599(i), fcrtl);
2195 fcrth = (hw->fc.high_water[i] << 10) | IXGBE_FCRTH_FCEN;
2197 IXGBE_WRITE_REG(hw, IXGBE_FCRTL_82599(i), 0);
2199 * In order to prevent Tx hangs when the internal Tx
2200 * switch is enabled we must set the high water mark
2201 * to the maximum FCRTH value. This allows the Tx
2202 * switch to function even under heavy Rx workloads.
2204 fcrth = IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(i)) - 32;
2207 IXGBE_WRITE_REG(hw, IXGBE_FCRTH_82599(i), fcrth);
2210 /* Configure pause time (2 TCs per register) */
2211 reg = hw->fc.pause_time * 0x00010001;
2212 for (i = 0; i < (MAX_TRAFFIC_CLASS / 2); i++)
2213 IXGBE_WRITE_REG(hw, IXGBE_FCTTV(i), reg);
2215 IXGBE_WRITE_REG(hw, IXGBE_FCRTV, hw->fc.pause_time / 2);
2222 * ixgbe_negotiate_fc - Negotiate flow control
2223 * @hw: pointer to hardware structure
2224 * @adv_reg: flow control advertised settings
2225 * @lp_reg: link partner's flow control settings
2226 * @adv_sym: symmetric pause bit in advertisement
2227 * @adv_asm: asymmetric pause bit in advertisement
2228 * @lp_sym: symmetric pause bit in link partner advertisement
2229 * @lp_asm: asymmetric pause bit in link partner advertisement
2231 * Find the intersection between advertised settings and link partner's
2232 * advertised settings
2234 static s32 ixgbe_negotiate_fc(struct ixgbe_hw *hw, u32 adv_reg, u32 lp_reg,
2235 u32 adv_sym, u32 adv_asm, u32 lp_sym, u32 lp_asm)
2237 if ((!(adv_reg)) || (!(lp_reg)))
2238 return IXGBE_ERR_FC_NOT_NEGOTIATED;
2240 if ((adv_reg & adv_sym) && (lp_reg & lp_sym)) {
2242 * Now we need to check if the user selected Rx ONLY
2243 * of pause frames. In this case, we had to advertise
2244 * FULL flow control because we could not advertise RX
2245 * ONLY. Hence, we must now check to see if we need to
2246 * turn OFF the TRANSMISSION of PAUSE frames.
2248 if (hw->fc.requested_mode == ixgbe_fc_full) {
2249 hw->fc.current_mode = ixgbe_fc_full;
2250 hw_dbg(hw, "Flow Control = FULL.\n");
2252 hw->fc.current_mode = ixgbe_fc_rx_pause;
2253 hw_dbg(hw, "Flow Control=RX PAUSE frames only\n");
2255 } else if (!(adv_reg & adv_sym) && (adv_reg & adv_asm) &&
2256 (lp_reg & lp_sym) && (lp_reg & lp_asm)) {
2257 hw->fc.current_mode = ixgbe_fc_tx_pause;
2258 hw_dbg(hw, "Flow Control = TX PAUSE frames only.\n");
2259 } else if ((adv_reg & adv_sym) && (adv_reg & adv_asm) &&
2260 !(lp_reg & lp_sym) && (lp_reg & lp_asm)) {
2261 hw->fc.current_mode = ixgbe_fc_rx_pause;
2262 hw_dbg(hw, "Flow Control = RX PAUSE frames only.\n");
2264 hw->fc.current_mode = ixgbe_fc_none;
2265 hw_dbg(hw, "Flow Control = NONE.\n");
2271 * ixgbe_fc_autoneg_fiber - Enable flow control on 1 gig fiber
2272 * @hw: pointer to hardware structure
2274 * Enable flow control according on 1 gig fiber.
2276 static s32 ixgbe_fc_autoneg_fiber(struct ixgbe_hw *hw)
2278 u32 pcs_anadv_reg, pcs_lpab_reg, linkstat;
2279 s32 ret_val = IXGBE_ERR_FC_NOT_NEGOTIATED;
2282 * On multispeed fiber at 1g, bail out if
2283 * - link is up but AN did not complete, or if
2284 * - link is up and AN completed but timed out
2287 linkstat = IXGBE_READ_REG(hw, IXGBE_PCS1GLSTA);
2288 if ((!!(linkstat & IXGBE_PCS1GLSTA_AN_COMPLETE) == 0) ||
2289 (!!(linkstat & IXGBE_PCS1GLSTA_AN_TIMED_OUT) == 1))
2292 pcs_anadv_reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANA);
2293 pcs_lpab_reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANLP);
2295 ret_val = ixgbe_negotiate_fc(hw, pcs_anadv_reg,
2296 pcs_lpab_reg, IXGBE_PCS1GANA_SYM_PAUSE,
2297 IXGBE_PCS1GANA_ASM_PAUSE,
2298 IXGBE_PCS1GANA_SYM_PAUSE,
2299 IXGBE_PCS1GANA_ASM_PAUSE);
2306 * ixgbe_fc_autoneg_backplane - Enable flow control IEEE clause 37
2307 * @hw: pointer to hardware structure
2309 * Enable flow control according to IEEE clause 37.
2311 static s32 ixgbe_fc_autoneg_backplane(struct ixgbe_hw *hw)
2313 u32 links2, anlp1_reg, autoc_reg, links;
2314 s32 ret_val = IXGBE_ERR_FC_NOT_NEGOTIATED;
2317 * On backplane, bail out if
2318 * - backplane autoneg was not completed, or if
2319 * - we are 82599 and link partner is not AN enabled
2321 links = IXGBE_READ_REG(hw, IXGBE_LINKS);
2322 if ((links & IXGBE_LINKS_KX_AN_COMP) == 0)
2325 if (hw->mac.type == ixgbe_mac_82599EB) {
2326 links2 = IXGBE_READ_REG(hw, IXGBE_LINKS2);
2327 if ((links2 & IXGBE_LINKS2_AN_SUPPORTED) == 0)
2331 * Read the 10g AN autoc and LP ability registers and resolve
2332 * local flow control settings accordingly
2334 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
2335 anlp1_reg = IXGBE_READ_REG(hw, IXGBE_ANLP1);
2337 ret_val = ixgbe_negotiate_fc(hw, autoc_reg,
2338 anlp1_reg, IXGBE_AUTOC_SYM_PAUSE, IXGBE_AUTOC_ASM_PAUSE,
2339 IXGBE_ANLP1_SYM_PAUSE, IXGBE_ANLP1_ASM_PAUSE);
2346 * ixgbe_fc_autoneg_copper - Enable flow control IEEE clause 37
2347 * @hw: pointer to hardware structure
2349 * Enable flow control according to IEEE clause 37.
2351 static s32 ixgbe_fc_autoneg_copper(struct ixgbe_hw *hw)
2353 u16 technology_ability_reg = 0;
2354 u16 lp_technology_ability_reg = 0;
2356 hw->phy.ops.read_reg(hw, MDIO_AN_ADVERTISE,
2358 &technology_ability_reg);
2359 hw->phy.ops.read_reg(hw, MDIO_AN_LPA,
2361 &lp_technology_ability_reg);
2363 return ixgbe_negotiate_fc(hw, (u32)technology_ability_reg,
2364 (u32)lp_technology_ability_reg,
2365 IXGBE_TAF_SYM_PAUSE, IXGBE_TAF_ASM_PAUSE,
2366 IXGBE_TAF_SYM_PAUSE, IXGBE_TAF_ASM_PAUSE);
2370 * ixgbe_fc_autoneg - Configure flow control
2371 * @hw: pointer to hardware structure
2373 * Compares our advertised flow control capabilities to those advertised by
2374 * our link partner, and determines the proper flow control mode to use.
2376 void ixgbe_fc_autoneg(struct ixgbe_hw *hw)
2378 s32 ret_val = IXGBE_ERR_FC_NOT_NEGOTIATED;
2379 ixgbe_link_speed speed;
2383 * AN should have completed when the cable was plugged in.
2384 * Look for reasons to bail out. Bail out if:
2385 * - FC autoneg is disabled, or if
2388 * Since we're being called from an LSC, link is already known to be up.
2389 * So use link_up_wait_to_complete=false.
2391 if (hw->fc.disable_fc_autoneg)
2394 hw->mac.ops.check_link(hw, &speed, &link_up, false);
2398 switch (hw->phy.media_type) {
2399 /* Autoneg flow control on fiber adapters */
2400 case ixgbe_media_type_fiber_fixed:
2401 case ixgbe_media_type_fiber:
2402 if (speed == IXGBE_LINK_SPEED_1GB_FULL)
2403 ret_val = ixgbe_fc_autoneg_fiber(hw);
2406 /* Autoneg flow control on backplane adapters */
2407 case ixgbe_media_type_backplane:
2408 ret_val = ixgbe_fc_autoneg_backplane(hw);
2411 /* Autoneg flow control on copper adapters */
2412 case ixgbe_media_type_copper:
2413 if (ixgbe_device_supports_autoneg_fc(hw))
2414 ret_val = ixgbe_fc_autoneg_copper(hw);
2423 hw->fc.fc_was_autonegged = true;
2425 hw->fc.fc_was_autonegged = false;
2426 hw->fc.current_mode = hw->fc.requested_mode;
2431 * ixgbe_pcie_timeout_poll - Return number of times to poll for completion
2432 * @hw: pointer to hardware structure
2434 * System-wide timeout range is encoded in PCIe Device Control2 register.
2436 * Add 10% to specified maximum and return the number of times to poll for
2437 * completion timeout, in units of 100 microsec. Never return less than
2438 * 800 = 80 millisec.
2440 static u32 ixgbe_pcie_timeout_poll(struct ixgbe_hw *hw)
2442 struct ixgbe_adapter *adapter = hw->back;
2446 pci_read_config_word(adapter->pdev, IXGBE_PCI_DEVICE_CONTROL2,
2448 devctl2 &= IXGBE_PCIDEVCTRL2_TIMEO_MASK;
2451 case IXGBE_PCIDEVCTRL2_65_130ms:
2452 pollcnt = 1300; /* 130 millisec */
2454 case IXGBE_PCIDEVCTRL2_260_520ms:
2455 pollcnt = 5200; /* 520 millisec */
2457 case IXGBE_PCIDEVCTRL2_1_2s:
2458 pollcnt = 20000; /* 2 sec */
2460 case IXGBE_PCIDEVCTRL2_4_8s:
2461 pollcnt = 80000; /* 8 sec */
2463 case IXGBE_PCIDEVCTRL2_17_34s:
2464 pollcnt = 34000; /* 34 sec */
2466 case IXGBE_PCIDEVCTRL2_50_100us: /* 100 microsecs */
2467 case IXGBE_PCIDEVCTRL2_1_2ms: /* 2 millisecs */
2468 case IXGBE_PCIDEVCTRL2_16_32ms: /* 32 millisec */
2469 case IXGBE_PCIDEVCTRL2_16_32ms_def: /* 32 millisec default */
2471 pollcnt = 800; /* 80 millisec minimum */
2475 /* add 10% to spec maximum */
2476 return (pollcnt * 11) / 10;
2480 * ixgbe_disable_pcie_master - Disable PCI-express master access
2481 * @hw: pointer to hardware structure
2483 * Disables PCI-Express master access and verifies there are no pending
2484 * requests. IXGBE_ERR_MASTER_REQUESTS_PENDING is returned if master disable
2485 * bit hasn't caused the master requests to be disabled, else 0
2486 * is returned signifying master requests disabled.
2488 static s32 ixgbe_disable_pcie_master(struct ixgbe_hw *hw)
2494 /* Always set this bit to ensure any future transactions are blocked */
2495 IXGBE_WRITE_REG(hw, IXGBE_CTRL, IXGBE_CTRL_GIO_DIS);
2497 /* Exit if master requests are blocked */
2498 if (!(IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_GIO) ||
2499 ixgbe_removed(hw->hw_addr))
2502 /* Poll for master request bit to clear */
2503 for (i = 0; i < IXGBE_PCI_MASTER_DISABLE_TIMEOUT; i++) {
2505 if (!(IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_GIO))
2510 * Two consecutive resets are required via CTRL.RST per datasheet
2511 * 5.2.5.3.2 Master Disable. We set a flag to inform the reset routine
2512 * of this need. The first reset prevents new master requests from
2513 * being issued by our device. We then must wait 1usec or more for any
2514 * remaining completions from the PCIe bus to trickle in, and then reset
2515 * again to clear out any effects they may have had on our device.
2517 hw_dbg(hw, "GIO Master Disable bit didn't clear - requesting resets\n");
2518 hw->mac.flags |= IXGBE_FLAGS_DOUBLE_RESET_REQUIRED;
2521 * Before proceeding, make sure that the PCIe block does not have
2522 * transactions pending.
2524 poll = ixgbe_pcie_timeout_poll(hw);
2525 for (i = 0; i < poll; i++) {
2527 value = ixgbe_read_pci_cfg_word(hw, IXGBE_PCI_DEVICE_STATUS);
2528 if (ixgbe_removed(hw->hw_addr))
2530 if (!(value & IXGBE_PCI_DEVICE_STATUS_TRANSACTION_PENDING))
2534 hw_dbg(hw, "PCIe transaction pending bit also did not clear.\n");
2535 status = IXGBE_ERR_MASTER_REQUESTS_PENDING;
2542 * ixgbe_acquire_swfw_sync - Acquire SWFW semaphore
2543 * @hw: pointer to hardware structure
2544 * @mask: Mask to specify which semaphore to acquire
2546 * Acquires the SWFW semaphore through the GSSR register for the specified
2547 * function (CSR, PHY0, PHY1, EEPROM, Flash)
2549 s32 ixgbe_acquire_swfw_sync(struct ixgbe_hw *hw, u16 mask)
2553 u32 fwmask = mask << 5;
2557 for (i = 0; i < timeout; i++) {
2559 * SW NVM semaphore bit is used for access to all
2560 * SW_FW_SYNC bits (not just NVM)
2562 if (ixgbe_get_eeprom_semaphore(hw))
2563 return IXGBE_ERR_SWFW_SYNC;
2565 gssr = IXGBE_READ_REG(hw, IXGBE_GSSR);
2566 if (!(gssr & (fwmask | swmask))) {
2568 IXGBE_WRITE_REG(hw, IXGBE_GSSR, gssr);
2569 ixgbe_release_eeprom_semaphore(hw);
2572 /* Resource is currently in use by FW or SW */
2573 ixgbe_release_eeprom_semaphore(hw);
2574 usleep_range(5000, 10000);
2578 /* If time expired clear the bits holding the lock and retry */
2579 if (gssr & (fwmask | swmask))
2580 ixgbe_release_swfw_sync(hw, gssr & (fwmask | swmask));
2582 usleep_range(5000, 10000);
2583 return IXGBE_ERR_SWFW_SYNC;
2587 * ixgbe_release_swfw_sync - Release SWFW semaphore
2588 * @hw: pointer to hardware structure
2589 * @mask: Mask to specify which semaphore to release
2591 * Releases the SWFW semaphore through the GSSR register for the specified
2592 * function (CSR, PHY0, PHY1, EEPROM, Flash)
2594 void ixgbe_release_swfw_sync(struct ixgbe_hw *hw, u16 mask)
2599 ixgbe_get_eeprom_semaphore(hw);
2601 gssr = IXGBE_READ_REG(hw, IXGBE_GSSR);
2603 IXGBE_WRITE_REG(hw, IXGBE_GSSR, gssr);
2605 ixgbe_release_eeprom_semaphore(hw);
2609 * prot_autoc_read_generic - Hides MAC differences needed for AUTOC read
2610 * @hw: pointer to hardware structure
2611 * @reg_val: Value we read from AUTOC
2612 * @locked: bool to indicate whether the SW/FW lock should be taken. Never
2613 * true in this the generic case.
2615 * The default case requires no protection so just to the register read.
2617 s32 prot_autoc_read_generic(struct ixgbe_hw *hw, bool *locked, u32 *reg_val)
2620 *reg_val = IXGBE_READ_REG(hw, IXGBE_AUTOC);
2625 * prot_autoc_write_generic - Hides MAC differences needed for AUTOC write
2626 * @hw: pointer to hardware structure
2627 * @reg_val: value to write to AUTOC
2628 * @locked: bool to indicate whether the SW/FW lock was already taken by
2631 s32 prot_autoc_write_generic(struct ixgbe_hw *hw, u32 reg_val, bool locked)
2633 IXGBE_WRITE_REG(hw, IXGBE_AUTOC, reg_val);
2638 * ixgbe_disable_rx_buff_generic - Stops the receive data path
2639 * @hw: pointer to hardware structure
2641 * Stops the receive data path and waits for the HW to internally
2642 * empty the Rx security block.
2644 s32 ixgbe_disable_rx_buff_generic(struct ixgbe_hw *hw)
2646 #define IXGBE_MAX_SECRX_POLL 40
2650 secrxreg = IXGBE_READ_REG(hw, IXGBE_SECRXCTRL);
2651 secrxreg |= IXGBE_SECRXCTRL_RX_DIS;
2652 IXGBE_WRITE_REG(hw, IXGBE_SECRXCTRL, secrxreg);
2653 for (i = 0; i < IXGBE_MAX_SECRX_POLL; i++) {
2654 secrxreg = IXGBE_READ_REG(hw, IXGBE_SECRXSTAT);
2655 if (secrxreg & IXGBE_SECRXSTAT_SECRX_RDY)
2658 /* Use interrupt-safe sleep just in case */
2662 /* For informational purposes only */
2663 if (i >= IXGBE_MAX_SECRX_POLL)
2664 hw_dbg(hw, "Rx unit being enabled before security "
2665 "path fully disabled. Continuing with init.\n");
2672 * ixgbe_enable_rx_buff - Enables the receive data path
2673 * @hw: pointer to hardware structure
2675 * Enables the receive data path
2677 s32 ixgbe_enable_rx_buff_generic(struct ixgbe_hw *hw)
2681 secrxreg = IXGBE_READ_REG(hw, IXGBE_SECRXCTRL);
2682 secrxreg &= ~IXGBE_SECRXCTRL_RX_DIS;
2683 IXGBE_WRITE_REG(hw, IXGBE_SECRXCTRL, secrxreg);
2684 IXGBE_WRITE_FLUSH(hw);
2690 * ixgbe_enable_rx_dma_generic - Enable the Rx DMA unit
2691 * @hw: pointer to hardware structure
2692 * @regval: register value to write to RXCTRL
2694 * Enables the Rx DMA unit
2696 s32 ixgbe_enable_rx_dma_generic(struct ixgbe_hw *hw, u32 regval)
2698 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, regval);
2704 * ixgbe_blink_led_start_generic - Blink LED based on index.
2705 * @hw: pointer to hardware structure
2706 * @index: led number to blink
2708 s32 ixgbe_blink_led_start_generic(struct ixgbe_hw *hw, u32 index)
2710 ixgbe_link_speed speed = 0;
2711 bool link_up = false;
2712 u32 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
2713 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
2715 bool locked = false;
2718 * Link must be up to auto-blink the LEDs;
2719 * Force it if link is down.
2721 hw->mac.ops.check_link(hw, &speed, &link_up, false);
2724 ret_val = hw->mac.ops.prot_autoc_read(hw, &locked, &autoc_reg);
2728 autoc_reg |= IXGBE_AUTOC_AN_RESTART;
2729 autoc_reg |= IXGBE_AUTOC_FLU;
2731 ret_val = hw->mac.ops.prot_autoc_write(hw, autoc_reg, locked);
2735 IXGBE_WRITE_FLUSH(hw);
2737 usleep_range(10000, 20000);
2740 led_reg &= ~IXGBE_LED_MODE_MASK(index);
2741 led_reg |= IXGBE_LED_BLINK(index);
2742 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
2743 IXGBE_WRITE_FLUSH(hw);
2750 * ixgbe_blink_led_stop_generic - Stop blinking LED based on index.
2751 * @hw: pointer to hardware structure
2752 * @index: led number to stop blinking
2754 s32 ixgbe_blink_led_stop_generic(struct ixgbe_hw *hw, u32 index)
2757 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
2759 bool locked = false;
2761 ret_val = hw->mac.ops.prot_autoc_read(hw, &locked, &autoc_reg);
2765 autoc_reg &= ~IXGBE_AUTOC_FLU;
2766 autoc_reg |= IXGBE_AUTOC_AN_RESTART;
2768 ret_val = hw->mac.ops.prot_autoc_write(hw, autoc_reg, locked);
2772 led_reg &= ~IXGBE_LED_MODE_MASK(index);
2773 led_reg &= ~IXGBE_LED_BLINK(index);
2774 led_reg |= IXGBE_LED_LINK_ACTIVE << IXGBE_LED_MODE_SHIFT(index);
2775 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
2776 IXGBE_WRITE_FLUSH(hw);
2783 * ixgbe_get_san_mac_addr_offset - Get SAN MAC address offset from the EEPROM
2784 * @hw: pointer to hardware structure
2785 * @san_mac_offset: SAN MAC address offset
2787 * This function will read the EEPROM location for the SAN MAC address
2788 * pointer, and returns the value at that location. This is used in both
2789 * get and set mac_addr routines.
2791 static s32 ixgbe_get_san_mac_addr_offset(struct ixgbe_hw *hw,
2792 u16 *san_mac_offset)
2797 * First read the EEPROM pointer to see if the MAC addresses are
2800 ret_val = hw->eeprom.ops.read(hw, IXGBE_SAN_MAC_ADDR_PTR,
2803 hw_err(hw, "eeprom read at offset %d failed\n",
2804 IXGBE_SAN_MAC_ADDR_PTR);
2810 * ixgbe_get_san_mac_addr_generic - SAN MAC address retrieval from the EEPROM
2811 * @hw: pointer to hardware structure
2812 * @san_mac_addr: SAN MAC address
2814 * Reads the SAN MAC address from the EEPROM, if it's available. This is
2815 * per-port, so set_lan_id() must be called before reading the addresses.
2816 * set_lan_id() is called by identify_sfp(), but this cannot be relied
2817 * upon for non-SFP connections, so we must call it here.
2819 s32 ixgbe_get_san_mac_addr_generic(struct ixgbe_hw *hw, u8 *san_mac_addr)
2821 u16 san_mac_data, san_mac_offset;
2826 * First read the EEPROM pointer to see if the MAC addresses are
2827 * available. If they're not, no point in calling set_lan_id() here.
2829 ret_val = ixgbe_get_san_mac_addr_offset(hw, &san_mac_offset);
2830 if (ret_val || san_mac_offset == 0 || san_mac_offset == 0xFFFF)
2832 goto san_mac_addr_clr;
2834 /* make sure we know which port we need to program */
2835 hw->mac.ops.set_lan_id(hw);
2836 /* apply the port offset to the address offset */
2837 (hw->bus.func) ? (san_mac_offset += IXGBE_SAN_MAC_ADDR_PORT1_OFFSET) :
2838 (san_mac_offset += IXGBE_SAN_MAC_ADDR_PORT0_OFFSET);
2839 for (i = 0; i < 3; i++) {
2840 ret_val = hw->eeprom.ops.read(hw, san_mac_offset,
2843 hw_err(hw, "eeprom read at offset %d failed\n",
2845 goto san_mac_addr_clr;
2847 san_mac_addr[i * 2] = (u8)(san_mac_data);
2848 san_mac_addr[i * 2 + 1] = (u8)(san_mac_data >> 8);
2854 /* No addresses available in this EEPROM. It's not necessarily an
2855 * error though, so just wipe the local address and return.
2857 for (i = 0; i < 6; i++)
2858 san_mac_addr[i] = 0xFF;
2863 * ixgbe_get_pcie_msix_count_generic - Gets MSI-X vector count
2864 * @hw: pointer to hardware structure
2866 * Read PCIe configuration space, and get the MSI-X vector count from
2867 * the capabilities table.
2869 u16 ixgbe_get_pcie_msix_count_generic(struct ixgbe_hw *hw)
2875 switch (hw->mac.type) {
2876 case ixgbe_mac_82598EB:
2877 pcie_offset = IXGBE_PCIE_MSIX_82598_CAPS;
2878 max_msix_count = IXGBE_MAX_MSIX_VECTORS_82598;
2880 case ixgbe_mac_82599EB:
2881 case ixgbe_mac_X540:
2882 pcie_offset = IXGBE_PCIE_MSIX_82599_CAPS;
2883 max_msix_count = IXGBE_MAX_MSIX_VECTORS_82599;
2889 msix_count = ixgbe_read_pci_cfg_word(hw, pcie_offset);
2890 if (ixgbe_removed(hw->hw_addr))
2892 msix_count &= IXGBE_PCIE_MSIX_TBL_SZ_MASK;
2894 /* MSI-X count is zero-based in HW */
2897 if (msix_count > max_msix_count)
2898 msix_count = max_msix_count;
2904 * ixgbe_clear_vmdq_generic - Disassociate a VMDq pool index from a rx address
2905 * @hw: pointer to hardware struct
2906 * @rar: receive address register index to disassociate
2907 * @vmdq: VMDq pool index to remove from the rar
2909 s32 ixgbe_clear_vmdq_generic(struct ixgbe_hw *hw, u32 rar, u32 vmdq)
2911 u32 mpsar_lo, mpsar_hi;
2912 u32 rar_entries = hw->mac.num_rar_entries;
2914 /* Make sure we are using a valid rar index range */
2915 if (rar >= rar_entries) {
2916 hw_dbg(hw, "RAR index %d is out of range.\n", rar);
2917 return IXGBE_ERR_INVALID_ARGUMENT;
2920 mpsar_lo = IXGBE_READ_REG(hw, IXGBE_MPSAR_LO(rar));
2921 mpsar_hi = IXGBE_READ_REG(hw, IXGBE_MPSAR_HI(rar));
2923 if (!mpsar_lo && !mpsar_hi)
2926 if (vmdq == IXGBE_CLEAR_VMDQ_ALL) {
2928 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), 0);
2932 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), 0);
2935 } else if (vmdq < 32) {
2936 mpsar_lo &= ~(1 << vmdq);
2937 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), mpsar_lo);
2939 mpsar_hi &= ~(1 << (vmdq - 32));
2940 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), mpsar_hi);
2943 /* was that the last pool using this rar? */
2944 if (mpsar_lo == 0 && mpsar_hi == 0 && rar != 0)
2945 hw->mac.ops.clear_rar(hw, rar);
2951 * ixgbe_set_vmdq_generic - Associate a VMDq pool index with a rx address
2952 * @hw: pointer to hardware struct
2953 * @rar: receive address register index to associate with a VMDq index
2954 * @vmdq: VMDq pool index
2956 s32 ixgbe_set_vmdq_generic(struct ixgbe_hw *hw, u32 rar, u32 vmdq)
2959 u32 rar_entries = hw->mac.num_rar_entries;
2961 /* Make sure we are using a valid rar index range */
2962 if (rar >= rar_entries) {
2963 hw_dbg(hw, "RAR index %d is out of range.\n", rar);
2964 return IXGBE_ERR_INVALID_ARGUMENT;
2968 mpsar = IXGBE_READ_REG(hw, IXGBE_MPSAR_LO(rar));
2970 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), mpsar);
2972 mpsar = IXGBE_READ_REG(hw, IXGBE_MPSAR_HI(rar));
2973 mpsar |= 1 << (vmdq - 32);
2974 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), mpsar);
2980 * This function should only be involved in the IOV mode.
2981 * In IOV mode, Default pool is next pool after the number of
2982 * VFs advertized and not 0.
2983 * MPSAR table needs to be updated for SAN_MAC RAR [hw->mac.san_mac_rar_index]
2985 * ixgbe_set_vmdq_san_mac - Associate default VMDq pool index with a rx address
2986 * @hw: pointer to hardware struct
2987 * @vmdq: VMDq pool index
2989 s32 ixgbe_set_vmdq_san_mac_generic(struct ixgbe_hw *hw, u32 vmdq)
2991 u32 rar = hw->mac.san_mac_rar_index;
2994 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), 1 << vmdq);
2995 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), 0);
2997 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), 0);
2998 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), 1 << (vmdq - 32));
3005 * ixgbe_init_uta_tables_generic - Initialize the Unicast Table Array
3006 * @hw: pointer to hardware structure
3008 s32 ixgbe_init_uta_tables_generic(struct ixgbe_hw *hw)
3012 for (i = 0; i < 128; i++)
3013 IXGBE_WRITE_REG(hw, IXGBE_UTA(i), 0);
3019 * ixgbe_find_vlvf_slot - find the vlanid or the first empty slot
3020 * @hw: pointer to hardware structure
3021 * @vlan: VLAN id to write to VLAN filter
3023 * return the VLVF index where this VLAN id should be placed
3026 static s32 ixgbe_find_vlvf_slot(struct ixgbe_hw *hw, u32 vlan)
3029 u32 first_empty_slot = 0;
3032 /* short cut the special case */
3037 * Search for the vlan id in the VLVF entries. Save off the first empty
3038 * slot found along the way
3040 for (regindex = 1; regindex < IXGBE_VLVF_ENTRIES; regindex++) {
3041 bits = IXGBE_READ_REG(hw, IXGBE_VLVF(regindex));
3042 if (!bits && !(first_empty_slot))
3043 first_empty_slot = regindex;
3044 else if ((bits & 0x0FFF) == vlan)
3049 * If regindex is less than IXGBE_VLVF_ENTRIES, then we found the vlan
3050 * in the VLVF. Else use the first empty VLVF register for this
3053 if (regindex >= IXGBE_VLVF_ENTRIES) {
3054 if (first_empty_slot)
3055 regindex = first_empty_slot;
3057 hw_dbg(hw, "No space in VLVF.\n");
3058 regindex = IXGBE_ERR_NO_SPACE;
3066 * ixgbe_set_vfta_generic - Set VLAN filter table
3067 * @hw: pointer to hardware structure
3068 * @vlan: VLAN id to write to VLAN filter
3069 * @vind: VMDq output index that maps queue to VLAN id in VFVFB
3070 * @vlan_on: boolean flag to turn on/off VLAN in VFVF
3072 * Turn on/off specified VLAN in the VLAN filter table.
3074 s32 ixgbe_set_vfta_generic(struct ixgbe_hw *hw, u32 vlan, u32 vind,
3083 bool vfta_changed = false;
3086 return IXGBE_ERR_PARAM;
3089 * this is a 2 part operation - first the VFTA, then the
3090 * VLVF and VLVFB if VT Mode is set
3091 * We don't write the VFTA until we know the VLVF part succeeded.
3095 * The VFTA is a bitstring made up of 128 32-bit registers
3096 * that enable the particular VLAN id, much like the MTA:
3097 * bits[11-5]: which register
3098 * bits[4-0]: which bit in the register
3100 regindex = (vlan >> 5) & 0x7F;
3101 bitindex = vlan & 0x1F;
3102 targetbit = (1 << bitindex);
3103 vfta = IXGBE_READ_REG(hw, IXGBE_VFTA(regindex));
3106 if (!(vfta & targetbit)) {
3108 vfta_changed = true;
3111 if ((vfta & targetbit)) {
3113 vfta_changed = true;
3120 * make sure the vlan is in VLVF
3121 * set the vind bit in the matching VLVFB
3123 * clear the pool bit and possibly the vind
3125 vt = IXGBE_READ_REG(hw, IXGBE_VT_CTL);
3126 if (vt & IXGBE_VT_CTL_VT_ENABLE) {
3129 vlvf_index = ixgbe_find_vlvf_slot(hw, vlan);
3134 /* set the pool bit */
3136 bits = IXGBE_READ_REG(hw,
3137 IXGBE_VLVFB(vlvf_index*2));
3138 bits |= (1 << vind);
3140 IXGBE_VLVFB(vlvf_index*2),
3143 bits = IXGBE_READ_REG(hw,
3144 IXGBE_VLVFB((vlvf_index*2)+1));
3145 bits |= (1 << (vind-32));
3147 IXGBE_VLVFB((vlvf_index*2)+1),
3151 /* clear the pool bit */
3153 bits = IXGBE_READ_REG(hw,
3154 IXGBE_VLVFB(vlvf_index*2));
3155 bits &= ~(1 << vind);
3157 IXGBE_VLVFB(vlvf_index*2),
3159 bits |= IXGBE_READ_REG(hw,
3160 IXGBE_VLVFB((vlvf_index*2)+1));
3162 bits = IXGBE_READ_REG(hw,
3163 IXGBE_VLVFB((vlvf_index*2)+1));
3164 bits &= ~(1 << (vind-32));
3166 IXGBE_VLVFB((vlvf_index*2)+1),
3168 bits |= IXGBE_READ_REG(hw,
3169 IXGBE_VLVFB(vlvf_index*2));
3174 * If there are still bits set in the VLVFB registers
3175 * for the VLAN ID indicated we need to see if the
3176 * caller is requesting that we clear the VFTA entry bit.
3177 * If the caller has requested that we clear the VFTA
3178 * entry bit but there are still pools/VFs using this VLAN
3179 * ID entry then ignore the request. We're not worried
3180 * about the case where we're turning the VFTA VLAN ID
3181 * entry bit on, only when requested to turn it off as
3182 * there may be multiple pools and/or VFs using the
3183 * VLAN ID entry. In that case we cannot clear the
3184 * VFTA bit until all pools/VFs using that VLAN ID have also
3185 * been cleared. This will be indicated by "bits" being
3189 IXGBE_WRITE_REG(hw, IXGBE_VLVF(vlvf_index),
3190 (IXGBE_VLVF_VIEN | vlan));
3192 /* someone wants to clear the vfta entry
3193 * but some pools/VFs are still using it.
3195 vfta_changed = false;
3199 IXGBE_WRITE_REG(hw, IXGBE_VLVF(vlvf_index), 0);
3203 IXGBE_WRITE_REG(hw, IXGBE_VFTA(regindex), vfta);
3209 * ixgbe_clear_vfta_generic - Clear VLAN filter table
3210 * @hw: pointer to hardware structure
3212 * Clears the VLAN filer table, and the VMDq index associated with the filter
3214 s32 ixgbe_clear_vfta_generic(struct ixgbe_hw *hw)
3218 for (offset = 0; offset < hw->mac.vft_size; offset++)
3219 IXGBE_WRITE_REG(hw, IXGBE_VFTA(offset), 0);
3221 for (offset = 0; offset < IXGBE_VLVF_ENTRIES; offset++) {
3222 IXGBE_WRITE_REG(hw, IXGBE_VLVF(offset), 0);
3223 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(offset*2), 0);
3224 IXGBE_WRITE_REG(hw, IXGBE_VLVFB((offset*2)+1), 0);
3231 * ixgbe_check_mac_link_generic - Determine link and speed status
3232 * @hw: pointer to hardware structure
3233 * @speed: pointer to link speed
3234 * @link_up: true when link is up
3235 * @link_up_wait_to_complete: bool used to wait for link up or not
3237 * Reads the links register to determine if link is up and the current speed
3239 s32 ixgbe_check_mac_link_generic(struct ixgbe_hw *hw, ixgbe_link_speed *speed,
3240 bool *link_up, bool link_up_wait_to_complete)
3242 u32 links_reg, links_orig;
3245 /* clear the old state */
3246 links_orig = IXGBE_READ_REG(hw, IXGBE_LINKS);
3248 links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
3250 if (links_orig != links_reg) {
3251 hw_dbg(hw, "LINKS changed from %08X to %08X\n",
3252 links_orig, links_reg);
3255 if (link_up_wait_to_complete) {
3256 for (i = 0; i < IXGBE_LINK_UP_TIME; i++) {
3257 if (links_reg & IXGBE_LINKS_UP) {
3264 links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
3267 if (links_reg & IXGBE_LINKS_UP)
3273 if ((links_reg & IXGBE_LINKS_SPEED_82599) ==
3274 IXGBE_LINKS_SPEED_10G_82599)
3275 *speed = IXGBE_LINK_SPEED_10GB_FULL;
3276 else if ((links_reg & IXGBE_LINKS_SPEED_82599) ==
3277 IXGBE_LINKS_SPEED_1G_82599)
3278 *speed = IXGBE_LINK_SPEED_1GB_FULL;
3279 else if ((links_reg & IXGBE_LINKS_SPEED_82599) ==
3280 IXGBE_LINKS_SPEED_100_82599)
3281 *speed = IXGBE_LINK_SPEED_100_FULL;
3283 *speed = IXGBE_LINK_SPEED_UNKNOWN;
3289 * ixgbe_get_wwn_prefix_generic - Get alternative WWNN/WWPN prefix from
3291 * @hw: pointer to hardware structure
3292 * @wwnn_prefix: the alternative WWNN prefix
3293 * @wwpn_prefix: the alternative WWPN prefix
3295 * This function will read the EEPROM from the alternative SAN MAC address
3296 * block to check the support for the alternative WWNN/WWPN prefix support.
3298 s32 ixgbe_get_wwn_prefix_generic(struct ixgbe_hw *hw, u16 *wwnn_prefix,
3302 u16 alt_san_mac_blk_offset;
3304 /* clear output first */
3305 *wwnn_prefix = 0xFFFF;
3306 *wwpn_prefix = 0xFFFF;
3308 /* check if alternative SAN MAC is supported */
3309 offset = IXGBE_ALT_SAN_MAC_ADDR_BLK_PTR;
3310 if (hw->eeprom.ops.read(hw, offset, &alt_san_mac_blk_offset))
3311 goto wwn_prefix_err;
3313 if ((alt_san_mac_blk_offset == 0) ||
3314 (alt_san_mac_blk_offset == 0xFFFF))
3315 goto wwn_prefix_out;
3317 /* check capability in alternative san mac address block */
3318 offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_CAPS_OFFSET;
3319 if (hw->eeprom.ops.read(hw, offset, &caps))
3320 goto wwn_prefix_err;
3321 if (!(caps & IXGBE_ALT_SAN_MAC_ADDR_CAPS_ALTWWN))
3322 goto wwn_prefix_out;
3324 /* get the corresponding prefix for WWNN/WWPN */
3325 offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_WWNN_OFFSET;
3326 if (hw->eeprom.ops.read(hw, offset, wwnn_prefix))
3327 hw_err(hw, "eeprom read at offset %d failed\n", offset);
3329 offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_WWPN_OFFSET;
3330 if (hw->eeprom.ops.read(hw, offset, wwpn_prefix))
3331 goto wwn_prefix_err;
3337 hw_err(hw, "eeprom read at offset %d failed\n", offset);
3342 * ixgbe_set_mac_anti_spoofing - Enable/Disable MAC anti-spoofing
3343 * @hw: pointer to hardware structure
3344 * @enable: enable or disable switch for anti-spoofing
3345 * @pf: Physical Function pool - do not enable anti-spoofing for the PF
3348 void ixgbe_set_mac_anti_spoofing(struct ixgbe_hw *hw, bool enable, int pf)
3351 int pf_target_reg = pf >> 3;
3352 int pf_target_shift = pf % 8;
3355 if (hw->mac.type == ixgbe_mac_82598EB)
3359 pfvfspoof = IXGBE_SPOOF_MACAS_MASK;
3362 * PFVFSPOOF register array is size 8 with 8 bits assigned to
3363 * MAC anti-spoof enables in each register array element.
3365 for (j = 0; j < pf_target_reg; j++)
3366 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(j), pfvfspoof);
3369 * The PF should be allowed to spoof so that it can support
3370 * emulation mode NICs. Do not set the bits assigned to the PF
3372 pfvfspoof &= (1 << pf_target_shift) - 1;
3373 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(j), pfvfspoof);
3376 * Remaining pools belong to the PF so they do not need to have
3377 * anti-spoofing enabled.
3379 for (j++; j < IXGBE_PFVFSPOOF_REG_COUNT; j++)
3380 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(j), 0);
3384 * ixgbe_set_vlan_anti_spoofing - Enable/Disable VLAN anti-spoofing
3385 * @hw: pointer to hardware structure
3386 * @enable: enable or disable switch for VLAN anti-spoofing
3387 * @pf: Virtual Function pool - VF Pool to set for VLAN anti-spoofing
3390 void ixgbe_set_vlan_anti_spoofing(struct ixgbe_hw *hw, bool enable, int vf)
3392 int vf_target_reg = vf >> 3;
3393 int vf_target_shift = vf % 8 + IXGBE_SPOOF_VLANAS_SHIFT;
3396 if (hw->mac.type == ixgbe_mac_82598EB)
3399 pfvfspoof = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg));
3401 pfvfspoof |= (1 << vf_target_shift);
3403 pfvfspoof &= ~(1 << vf_target_shift);
3404 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), pfvfspoof);
3408 * ixgbe_get_device_caps_generic - Get additional device capabilities
3409 * @hw: pointer to hardware structure
3410 * @device_caps: the EEPROM word with the extra device capabilities
3412 * This function will read the EEPROM location for the device capabilities,
3413 * and return the word through device_caps.
3415 s32 ixgbe_get_device_caps_generic(struct ixgbe_hw *hw, u16 *device_caps)
3417 hw->eeprom.ops.read(hw, IXGBE_DEVICE_CAPS, device_caps);
3423 * ixgbe_set_rxpba_generic - Initialize RX packet buffer
3424 * @hw: pointer to hardware structure
3425 * @num_pb: number of packet buffers to allocate
3426 * @headroom: reserve n KB of headroom
3427 * @strategy: packet buffer allocation strategy
3429 void ixgbe_set_rxpba_generic(struct ixgbe_hw *hw,
3434 u32 pbsize = hw->mac.rx_pb_size;
3436 u32 rxpktsize, txpktsize, txpbthresh;
3438 /* Reserve headroom */
3444 /* Divide remaining packet buffer space amongst the number
3445 * of packet buffers requested using supplied strategy.
3448 case (PBA_STRATEGY_WEIGHTED):
3449 /* pba_80_48 strategy weight first half of packet buffer with
3450 * 5/8 of the packet buffer space.
3452 rxpktsize = ((pbsize * 5 * 2) / (num_pb * 8));
3453 pbsize -= rxpktsize * (num_pb / 2);
3454 rxpktsize <<= IXGBE_RXPBSIZE_SHIFT;
3455 for (; i < (num_pb / 2); i++)
3456 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpktsize);
3457 /* Fall through to configure remaining packet buffers */
3458 case (PBA_STRATEGY_EQUAL):
3459 /* Divide the remaining Rx packet buffer evenly among the TCs */
3460 rxpktsize = (pbsize / (num_pb - i)) << IXGBE_RXPBSIZE_SHIFT;
3461 for (; i < num_pb; i++)
3462 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpktsize);
3469 * Setup Tx packet buffer and threshold equally for all TCs
3470 * TXPBTHRESH register is set in K so divide by 1024 and subtract
3471 * 10 since the largest packet we support is just over 9K.
3473 txpktsize = IXGBE_TXPBSIZE_MAX / num_pb;
3474 txpbthresh = (txpktsize / 1024) - IXGBE_TXPKT_SIZE_MAX;
3475 for (i = 0; i < num_pb; i++) {
3476 IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), txpktsize);
3477 IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), txpbthresh);
3480 /* Clear unused TCs, if any, to zero buffer size*/
3481 for (; i < IXGBE_MAX_PB; i++) {
3482 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), 0);
3483 IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), 0);
3484 IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), 0);
3489 * ixgbe_calculate_checksum - Calculate checksum for buffer
3490 * @buffer: pointer to EEPROM
3491 * @length: size of EEPROM to calculate a checksum for
3493 * Calculates the checksum for some buffer on a specified length. The
3494 * checksum calculated is returned.
3496 static u8 ixgbe_calculate_checksum(u8 *buffer, u32 length)
3504 for (i = 0; i < length; i++)
3507 return (u8) (0 - sum);
3511 * ixgbe_host_interface_command - Issue command to manageability block
3512 * @hw: pointer to the HW structure
3513 * @buffer: contains the command to write and where the return status will
3515 * @length: length of buffer, must be multiple of 4 bytes
3517 * Communicates with the manageability block. On success return 0
3518 * else return IXGBE_ERR_HOST_INTERFACE_COMMAND.
3520 static s32 ixgbe_host_interface_command(struct ixgbe_hw *hw, u32 *buffer,
3524 u32 hdr_size = sizeof(struct ixgbe_hic_hdr);
3525 u8 buf_len, dword_len;
3529 if (length == 0 || length & 0x3 ||
3530 length > IXGBE_HI_MAX_BLOCK_BYTE_LENGTH) {
3531 hw_dbg(hw, "Buffer length failure.\n");
3532 ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND;
3536 /* Check that the host interface is enabled. */
3537 hicr = IXGBE_READ_REG(hw, IXGBE_HICR);
3538 if ((hicr & IXGBE_HICR_EN) == 0) {
3539 hw_dbg(hw, "IXGBE_HOST_EN bit disabled.\n");
3540 ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND;
3544 /* Calculate length in DWORDs */
3545 dword_len = length >> 2;
3548 * The device driver writes the relevant command block
3549 * into the ram area.
3551 for (i = 0; i < dword_len; i++)
3552 IXGBE_WRITE_REG_ARRAY(hw, IXGBE_FLEX_MNG,
3553 i, cpu_to_le32(buffer[i]));
3555 /* Setting this bit tells the ARC that a new command is pending. */
3556 IXGBE_WRITE_REG(hw, IXGBE_HICR, hicr | IXGBE_HICR_C);
3558 for (i = 0; i < IXGBE_HI_COMMAND_TIMEOUT; i++) {
3559 hicr = IXGBE_READ_REG(hw, IXGBE_HICR);
3560 if (!(hicr & IXGBE_HICR_C))
3562 usleep_range(1000, 2000);
3565 /* Check command successful completion. */
3566 if (i == IXGBE_HI_COMMAND_TIMEOUT ||
3567 (!(IXGBE_READ_REG(hw, IXGBE_HICR) & IXGBE_HICR_SV))) {
3568 hw_dbg(hw, "Command has failed with no status valid.\n");
3569 ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND;
3573 /* Calculate length in DWORDs */
3574 dword_len = hdr_size >> 2;
3576 /* first pull in the header so we know the buffer length */
3577 for (bi = 0; bi < dword_len; bi++) {
3578 buffer[bi] = IXGBE_READ_REG_ARRAY(hw, IXGBE_FLEX_MNG, bi);
3579 le32_to_cpus(&buffer[bi]);
3582 /* If there is any thing in data position pull it in */
3583 buf_len = ((struct ixgbe_hic_hdr *)buffer)->buf_len;
3587 if (length < (buf_len + hdr_size)) {
3588 hw_dbg(hw, "Buffer not large enough for reply message.\n");
3589 ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND;
3593 /* Calculate length in DWORDs, add 3 for odd lengths */
3594 dword_len = (buf_len + 3) >> 2;
3596 /* Pull in the rest of the buffer (bi is where we left off)*/
3597 for (; bi <= dword_len; bi++) {
3598 buffer[bi] = IXGBE_READ_REG_ARRAY(hw, IXGBE_FLEX_MNG, bi);
3599 le32_to_cpus(&buffer[bi]);
3607 * ixgbe_set_fw_drv_ver_generic - Sends driver version to firmware
3608 * @hw: pointer to the HW structure
3609 * @maj: driver version major number
3610 * @min: driver version minor number
3611 * @build: driver version build number
3612 * @sub: driver version sub build number
3614 * Sends driver version number to firmware through the manageability
3615 * block. On success return 0
3616 * else returns IXGBE_ERR_SWFW_SYNC when encountering an error acquiring
3617 * semaphore or IXGBE_ERR_HOST_INTERFACE_COMMAND when command fails.
3619 s32 ixgbe_set_fw_drv_ver_generic(struct ixgbe_hw *hw, u8 maj, u8 min,
3622 struct ixgbe_hic_drv_info fw_cmd;
3626 if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_SW_MNG_SM) != 0) {
3627 ret_val = IXGBE_ERR_SWFW_SYNC;
3631 fw_cmd.hdr.cmd = FW_CEM_CMD_DRIVER_INFO;
3632 fw_cmd.hdr.buf_len = FW_CEM_CMD_DRIVER_INFO_LEN;
3633 fw_cmd.hdr.cmd_or_resp.cmd_resv = FW_CEM_CMD_RESERVED;
3634 fw_cmd.port_num = (u8)hw->bus.func;
3635 fw_cmd.ver_maj = maj;
3636 fw_cmd.ver_min = min;
3637 fw_cmd.ver_build = build;
3638 fw_cmd.ver_sub = sub;
3639 fw_cmd.hdr.checksum = 0;
3640 fw_cmd.hdr.checksum = ixgbe_calculate_checksum((u8 *)&fw_cmd,
3641 (FW_CEM_HDR_LEN + fw_cmd.hdr.buf_len));
3645 for (i = 0; i <= FW_CEM_MAX_RETRIES; i++) {
3646 ret_val = ixgbe_host_interface_command(hw, (u32 *)&fw_cmd,
3651 if (fw_cmd.hdr.cmd_or_resp.ret_status ==
3652 FW_CEM_RESP_STATUS_SUCCESS)
3655 ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND;
3660 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_SW_MNG_SM);
3666 * ixgbe_clear_tx_pending - Clear pending TX work from the PCIe fifo
3667 * @hw: pointer to the hardware structure
3669 * The 82599 and x540 MACs can experience issues if TX work is still pending
3670 * when a reset occurs. This function prevents this by flushing the PCIe
3671 * buffers on the system.
3673 void ixgbe_clear_tx_pending(struct ixgbe_hw *hw)
3675 u32 gcr_ext, hlreg0;
3678 * If double reset is not requested then all transactions should
3679 * already be clear and as such there is no work to do
3681 if (!(hw->mac.flags & IXGBE_FLAGS_DOUBLE_RESET_REQUIRED))
3685 * Set loopback enable to prevent any transmits from being sent
3686 * should the link come up. This assumes that the RXCTRL.RXEN bit
3687 * has already been cleared.
3689 hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0);
3690 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0 | IXGBE_HLREG0_LPBK);
3692 /* initiate cleaning flow for buffers in the PCIe transaction layer */
3693 gcr_ext = IXGBE_READ_REG(hw, IXGBE_GCR_EXT);
3694 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT,
3695 gcr_ext | IXGBE_GCR_EXT_BUFFERS_CLEAR);
3697 /* Flush all writes and allow 20usec for all transactions to clear */
3698 IXGBE_WRITE_FLUSH(hw);
3701 /* restore previous register values */
3702 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, gcr_ext);
3703 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0);
3706 static const u8 ixgbe_emc_temp_data[4] = {
3707 IXGBE_EMC_INTERNAL_DATA,
3708 IXGBE_EMC_DIODE1_DATA,
3709 IXGBE_EMC_DIODE2_DATA,
3710 IXGBE_EMC_DIODE3_DATA
3712 static const u8 ixgbe_emc_therm_limit[4] = {
3713 IXGBE_EMC_INTERNAL_THERM_LIMIT,
3714 IXGBE_EMC_DIODE1_THERM_LIMIT,
3715 IXGBE_EMC_DIODE2_THERM_LIMIT,
3716 IXGBE_EMC_DIODE3_THERM_LIMIT
3720 * ixgbe_get_ets_data - Extracts the ETS bit data
3721 * @hw: pointer to hardware structure
3722 * @ets_cfg: extected ETS data
3723 * @ets_offset: offset of ETS data
3725 * Returns error code.
3727 static s32 ixgbe_get_ets_data(struct ixgbe_hw *hw, u16 *ets_cfg,
3732 status = hw->eeprom.ops.read(hw, IXGBE_ETS_CFG, ets_offset);
3736 if ((*ets_offset == 0x0000) || (*ets_offset == 0xFFFF)) {
3737 status = IXGBE_NOT_IMPLEMENTED;
3741 status = hw->eeprom.ops.read(hw, *ets_offset, ets_cfg);
3745 if ((*ets_cfg & IXGBE_ETS_TYPE_MASK) != IXGBE_ETS_TYPE_EMC_SHIFTED) {
3746 status = IXGBE_NOT_IMPLEMENTED;
3755 * ixgbe_get_thermal_sensor_data - Gathers thermal sensor data
3756 * @hw: pointer to hardware structure
3758 * Returns the thermal sensor data structure
3760 s32 ixgbe_get_thermal_sensor_data_generic(struct ixgbe_hw *hw)
3768 struct ixgbe_thermal_sensor_data *data = &hw->mac.thermal_sensor_data;
3770 /* Only support thermal sensors attached to physical port 0 */
3771 if ((IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1)) {
3772 status = IXGBE_NOT_IMPLEMENTED;
3776 status = ixgbe_get_ets_data(hw, &ets_cfg, &ets_offset);
3780 num_sensors = (ets_cfg & IXGBE_ETS_NUM_SENSORS_MASK);
3781 if (num_sensors > IXGBE_MAX_SENSORS)
3782 num_sensors = IXGBE_MAX_SENSORS;
3784 for (i = 0; i < num_sensors; i++) {
3788 status = hw->eeprom.ops.read(hw, (ets_offset + 1 + i),
3793 sensor_index = ((ets_sensor & IXGBE_ETS_DATA_INDEX_MASK) >>
3794 IXGBE_ETS_DATA_INDEX_SHIFT);
3795 sensor_location = ((ets_sensor & IXGBE_ETS_DATA_LOC_MASK) >>
3796 IXGBE_ETS_DATA_LOC_SHIFT);
3798 if (sensor_location != 0) {
3799 status = hw->phy.ops.read_i2c_byte(hw,
3800 ixgbe_emc_temp_data[sensor_index],
3801 IXGBE_I2C_THERMAL_SENSOR_ADDR,
3802 &data->sensor[i].temp);
3812 * ixgbe_init_thermal_sensor_thresh_generic - Inits thermal sensor thresholds
3813 * @hw: pointer to hardware structure
3815 * Inits the thermal sensor thresholds according to the NVM map
3816 * and save off the threshold and location values into mac.thermal_sensor_data
3818 s32 ixgbe_init_thermal_sensor_thresh_generic(struct ixgbe_hw *hw)
3824 u8 low_thresh_delta;
3828 struct ixgbe_thermal_sensor_data *data = &hw->mac.thermal_sensor_data;
3830 memset(data, 0, sizeof(struct ixgbe_thermal_sensor_data));
3832 /* Only support thermal sensors attached to physical port 0 */
3833 if ((IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1)) {
3834 status = IXGBE_NOT_IMPLEMENTED;
3838 status = ixgbe_get_ets_data(hw, &ets_cfg, &ets_offset);
3842 low_thresh_delta = ((ets_cfg & IXGBE_ETS_LTHRES_DELTA_MASK) >>
3843 IXGBE_ETS_LTHRES_DELTA_SHIFT);
3844 num_sensors = (ets_cfg & IXGBE_ETS_NUM_SENSORS_MASK);
3845 if (num_sensors > IXGBE_MAX_SENSORS)
3846 num_sensors = IXGBE_MAX_SENSORS;
3848 for (i = 0; i < num_sensors; i++) {
3852 if (hw->eeprom.ops.read(hw, ets_offset + 1 + i, &ets_sensor)) {
3853 hw_err(hw, "eeprom read at offset %d failed\n",
3854 ets_offset + 1 + i);
3857 sensor_index = ((ets_sensor & IXGBE_ETS_DATA_INDEX_MASK) >>
3858 IXGBE_ETS_DATA_INDEX_SHIFT);
3859 sensor_location = ((ets_sensor & IXGBE_ETS_DATA_LOC_MASK) >>
3860 IXGBE_ETS_DATA_LOC_SHIFT);
3861 therm_limit = ets_sensor & IXGBE_ETS_DATA_HTHRESH_MASK;
3863 hw->phy.ops.write_i2c_byte(hw,
3864 ixgbe_emc_therm_limit[sensor_index],
3865 IXGBE_I2C_THERMAL_SENSOR_ADDR, therm_limit);
3867 if (sensor_location == 0)
3870 data->sensor[i].location = sensor_location;
3871 data->sensor[i].caution_thresh = therm_limit;
3872 data->sensor[i].max_op_thresh = therm_limit - low_thresh_delta;