1 /*******************************************************************************
3 Intel 10 Gigabit PCI Express Linux driver
4 Copyright(c) 1999 - 2012 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 static s32 ixgbe_device_supports_autoneg_fc(struct ixgbe_hw *hw)
71 switch (hw->device_id) {
72 case IXGBE_DEV_ID_X540T:
73 case IXGBE_DEV_ID_X540T1:
75 case IXGBE_DEV_ID_82599_T3_LOM:
78 return IXGBE_ERR_FC_NOT_SUPPORTED;
83 * ixgbe_setup_fc - Set up flow control
84 * @hw: pointer to hardware structure
86 * Called at init time to set up flow control.
88 static s32 ixgbe_setup_fc(struct ixgbe_hw *hw)
91 u32 reg = 0, reg_bp = 0;
95 * Validate the requested mode. Strict IEEE mode does not allow
96 * ixgbe_fc_rx_pause because it will cause us to fail at UNH.
98 if (hw->fc.strict_ieee && hw->fc.requested_mode == ixgbe_fc_rx_pause) {
99 hw_dbg(hw, "ixgbe_fc_rx_pause not valid in strict IEEE mode\n");
100 ret_val = IXGBE_ERR_INVALID_LINK_SETTINGS;
105 * 10gig parts do not have a word in the EEPROM to determine the
106 * default flow control setting, so we explicitly set it to full.
108 if (hw->fc.requested_mode == ixgbe_fc_default)
109 hw->fc.requested_mode = ixgbe_fc_full;
112 * Set up the 1G and 10G flow control advertisement registers so the
113 * HW will be able to do fc autoneg once the cable is plugged in. If
114 * we link at 10G, the 1G advertisement is harmless and vice versa.
116 switch (hw->phy.media_type) {
117 case ixgbe_media_type_fiber:
118 case ixgbe_media_type_backplane:
119 reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANA);
120 reg_bp = IXGBE_READ_REG(hw, IXGBE_AUTOC);
122 case ixgbe_media_type_copper:
123 hw->phy.ops.read_reg(hw, MDIO_AN_ADVERTISE,
124 MDIO_MMD_AN, ®_cu);
131 * The possible values of fc.requested_mode are:
132 * 0: Flow control is completely disabled
133 * 1: Rx flow control is enabled (we can receive pause frames,
134 * but not send pause frames).
135 * 2: Tx flow control is enabled (we can send pause frames but
136 * we do not support receiving pause frames).
137 * 3: Both Rx and Tx flow control (symmetric) are enabled.
140 switch (hw->fc.requested_mode) {
142 /* Flow control completely disabled by software override. */
143 reg &= ~(IXGBE_PCS1GANA_SYM_PAUSE | IXGBE_PCS1GANA_ASM_PAUSE);
144 if (hw->phy.media_type == ixgbe_media_type_backplane)
145 reg_bp &= ~(IXGBE_AUTOC_SYM_PAUSE |
146 IXGBE_AUTOC_ASM_PAUSE);
147 else if (hw->phy.media_type == ixgbe_media_type_copper)
148 reg_cu &= ~(IXGBE_TAF_SYM_PAUSE | IXGBE_TAF_ASM_PAUSE);
150 case ixgbe_fc_tx_pause:
152 * Tx Flow control is enabled, and Rx Flow control is
153 * disabled by software override.
155 reg |= IXGBE_PCS1GANA_ASM_PAUSE;
156 reg &= ~IXGBE_PCS1GANA_SYM_PAUSE;
157 if (hw->phy.media_type == ixgbe_media_type_backplane) {
158 reg_bp |= IXGBE_AUTOC_ASM_PAUSE;
159 reg_bp &= ~IXGBE_AUTOC_SYM_PAUSE;
160 } else if (hw->phy.media_type == ixgbe_media_type_copper) {
161 reg_cu |= IXGBE_TAF_ASM_PAUSE;
162 reg_cu &= ~IXGBE_TAF_SYM_PAUSE;
165 case ixgbe_fc_rx_pause:
167 * Rx Flow control is enabled and Tx Flow control is
168 * disabled by software override. Since there really
169 * isn't a way to advertise that we are capable of RX
170 * Pause ONLY, we will advertise that we support both
171 * symmetric and asymmetric Rx PAUSE, as such we fall
172 * through to the fc_full statement. Later, we will
173 * disable the adapter's ability to send PAUSE frames.
176 /* Flow control (both Rx and Tx) is enabled by SW override. */
177 reg |= IXGBE_PCS1GANA_SYM_PAUSE | IXGBE_PCS1GANA_ASM_PAUSE;
178 if (hw->phy.media_type == ixgbe_media_type_backplane)
179 reg_bp |= IXGBE_AUTOC_SYM_PAUSE |
180 IXGBE_AUTOC_ASM_PAUSE;
181 else if (hw->phy.media_type == ixgbe_media_type_copper)
182 reg_cu |= IXGBE_TAF_SYM_PAUSE | IXGBE_TAF_ASM_PAUSE;
185 hw_dbg(hw, "Flow control param set incorrectly\n");
186 ret_val = IXGBE_ERR_CONFIG;
191 if (hw->mac.type != ixgbe_mac_X540) {
193 * Enable auto-negotiation between the MAC & PHY;
194 * the MAC will advertise clause 37 flow control.
196 IXGBE_WRITE_REG(hw, IXGBE_PCS1GANA, reg);
197 reg = IXGBE_READ_REG(hw, IXGBE_PCS1GLCTL);
199 /* Disable AN timeout */
200 if (hw->fc.strict_ieee)
201 reg &= ~IXGBE_PCS1GLCTL_AN_1G_TIMEOUT_EN;
203 IXGBE_WRITE_REG(hw, IXGBE_PCS1GLCTL, reg);
204 hw_dbg(hw, "Set up FC; PCS1GLCTL = 0x%08X\n", reg);
208 * AUTOC restart handles negotiation of 1G and 10G on backplane
209 * and copper. There is no need to set the PCS1GCTL register.
212 if (hw->phy.media_type == ixgbe_media_type_backplane) {
213 reg_bp |= IXGBE_AUTOC_AN_RESTART;
214 IXGBE_WRITE_REG(hw, IXGBE_AUTOC, reg_bp);
215 } else if ((hw->phy.media_type == ixgbe_media_type_copper) &&
216 (ixgbe_device_supports_autoneg_fc(hw) == 0)) {
217 hw->phy.ops.write_reg(hw, MDIO_AN_ADVERTISE,
218 MDIO_MMD_AN, reg_cu);
221 hw_dbg(hw, "Set up FC; IXGBE_AUTOC = 0x%08X\n", reg);
227 * ixgbe_start_hw_generic - Prepare hardware for Tx/Rx
228 * @hw: pointer to hardware structure
230 * Starts the hardware by filling the bus info structure and media type, clears
231 * all on chip counters, initializes receive address registers, multicast
232 * table, VLAN filter table, calls routine to set up link and flow control
233 * settings, and leaves transmit and receive units disabled and uninitialized
235 s32 ixgbe_start_hw_generic(struct ixgbe_hw *hw)
239 /* Set the media type */
240 hw->phy.media_type = hw->mac.ops.get_media_type(hw);
242 /* Identify the PHY */
243 hw->phy.ops.identify(hw);
245 /* Clear the VLAN filter table */
246 hw->mac.ops.clear_vfta(hw);
248 /* Clear statistics registers */
249 hw->mac.ops.clear_hw_cntrs(hw);
251 /* Set No Snoop Disable */
252 ctrl_ext = IXGBE_READ_REG(hw, IXGBE_CTRL_EXT);
253 ctrl_ext |= IXGBE_CTRL_EXT_NS_DIS;
254 IXGBE_WRITE_REG(hw, IXGBE_CTRL_EXT, ctrl_ext);
255 IXGBE_WRITE_FLUSH(hw);
257 /* Setup flow control */
260 /* Clear adapter stopped flag */
261 hw->adapter_stopped = false;
267 * ixgbe_start_hw_gen2 - Init sequence for common device family
268 * @hw: pointer to hw structure
270 * Performs the init sequence common to the second generation
272 * Devices in the second generation:
276 s32 ixgbe_start_hw_gen2(struct ixgbe_hw *hw)
281 /* Clear the rate limiters */
282 for (i = 0; i < hw->mac.max_tx_queues; i++) {
283 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, i);
284 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, 0);
286 IXGBE_WRITE_FLUSH(hw);
288 /* Disable relaxed ordering */
289 for (i = 0; i < hw->mac.max_tx_queues; i++) {
290 regval = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL_82599(i));
291 regval &= ~IXGBE_DCA_TXCTRL_DESC_WRO_EN;
292 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL_82599(i), regval);
295 for (i = 0; i < hw->mac.max_rx_queues; i++) {
296 regval = IXGBE_READ_REG(hw, IXGBE_DCA_RXCTRL(i));
297 regval &= ~(IXGBE_DCA_RXCTRL_DATA_WRO_EN |
298 IXGBE_DCA_RXCTRL_HEAD_WRO_EN);
299 IXGBE_WRITE_REG(hw, IXGBE_DCA_RXCTRL(i), regval);
306 * ixgbe_init_hw_generic - Generic hardware initialization
307 * @hw: pointer to hardware structure
309 * Initialize the hardware by resetting the hardware, filling the bus info
310 * structure and media type, clears all on chip counters, initializes receive
311 * address registers, multicast table, VLAN filter table, calls routine to set
312 * up link and flow control settings, and leaves transmit and receive units
313 * disabled and uninitialized
315 s32 ixgbe_init_hw_generic(struct ixgbe_hw *hw)
319 /* Reset the hardware */
320 status = hw->mac.ops.reset_hw(hw);
324 status = hw->mac.ops.start_hw(hw);
331 * ixgbe_clear_hw_cntrs_generic - Generic clear hardware counters
332 * @hw: pointer to hardware structure
334 * Clears all hardware statistics counters by reading them from the hardware
335 * Statistics counters are clear on read.
337 s32 ixgbe_clear_hw_cntrs_generic(struct ixgbe_hw *hw)
341 IXGBE_READ_REG(hw, IXGBE_CRCERRS);
342 IXGBE_READ_REG(hw, IXGBE_ILLERRC);
343 IXGBE_READ_REG(hw, IXGBE_ERRBC);
344 IXGBE_READ_REG(hw, IXGBE_MSPDC);
345 for (i = 0; i < 8; i++)
346 IXGBE_READ_REG(hw, IXGBE_MPC(i));
348 IXGBE_READ_REG(hw, IXGBE_MLFC);
349 IXGBE_READ_REG(hw, IXGBE_MRFC);
350 IXGBE_READ_REG(hw, IXGBE_RLEC);
351 IXGBE_READ_REG(hw, IXGBE_LXONTXC);
352 IXGBE_READ_REG(hw, IXGBE_LXOFFTXC);
353 if (hw->mac.type >= ixgbe_mac_82599EB) {
354 IXGBE_READ_REG(hw, IXGBE_LXONRXCNT);
355 IXGBE_READ_REG(hw, IXGBE_LXOFFRXCNT);
357 IXGBE_READ_REG(hw, IXGBE_LXONRXC);
358 IXGBE_READ_REG(hw, IXGBE_LXOFFRXC);
361 for (i = 0; i < 8; i++) {
362 IXGBE_READ_REG(hw, IXGBE_PXONTXC(i));
363 IXGBE_READ_REG(hw, IXGBE_PXOFFTXC(i));
364 if (hw->mac.type >= ixgbe_mac_82599EB) {
365 IXGBE_READ_REG(hw, IXGBE_PXONRXCNT(i));
366 IXGBE_READ_REG(hw, IXGBE_PXOFFRXCNT(i));
368 IXGBE_READ_REG(hw, IXGBE_PXONRXC(i));
369 IXGBE_READ_REG(hw, IXGBE_PXOFFRXC(i));
372 if (hw->mac.type >= ixgbe_mac_82599EB)
373 for (i = 0; i < 8; i++)
374 IXGBE_READ_REG(hw, IXGBE_PXON2OFFCNT(i));
375 IXGBE_READ_REG(hw, IXGBE_PRC64);
376 IXGBE_READ_REG(hw, IXGBE_PRC127);
377 IXGBE_READ_REG(hw, IXGBE_PRC255);
378 IXGBE_READ_REG(hw, IXGBE_PRC511);
379 IXGBE_READ_REG(hw, IXGBE_PRC1023);
380 IXGBE_READ_REG(hw, IXGBE_PRC1522);
381 IXGBE_READ_REG(hw, IXGBE_GPRC);
382 IXGBE_READ_REG(hw, IXGBE_BPRC);
383 IXGBE_READ_REG(hw, IXGBE_MPRC);
384 IXGBE_READ_REG(hw, IXGBE_GPTC);
385 IXGBE_READ_REG(hw, IXGBE_GORCL);
386 IXGBE_READ_REG(hw, IXGBE_GORCH);
387 IXGBE_READ_REG(hw, IXGBE_GOTCL);
388 IXGBE_READ_REG(hw, IXGBE_GOTCH);
389 if (hw->mac.type == ixgbe_mac_82598EB)
390 for (i = 0; i < 8; i++)
391 IXGBE_READ_REG(hw, IXGBE_RNBC(i));
392 IXGBE_READ_REG(hw, IXGBE_RUC);
393 IXGBE_READ_REG(hw, IXGBE_RFC);
394 IXGBE_READ_REG(hw, IXGBE_ROC);
395 IXGBE_READ_REG(hw, IXGBE_RJC);
396 IXGBE_READ_REG(hw, IXGBE_MNGPRC);
397 IXGBE_READ_REG(hw, IXGBE_MNGPDC);
398 IXGBE_READ_REG(hw, IXGBE_MNGPTC);
399 IXGBE_READ_REG(hw, IXGBE_TORL);
400 IXGBE_READ_REG(hw, IXGBE_TORH);
401 IXGBE_READ_REG(hw, IXGBE_TPR);
402 IXGBE_READ_REG(hw, IXGBE_TPT);
403 IXGBE_READ_REG(hw, IXGBE_PTC64);
404 IXGBE_READ_REG(hw, IXGBE_PTC127);
405 IXGBE_READ_REG(hw, IXGBE_PTC255);
406 IXGBE_READ_REG(hw, IXGBE_PTC511);
407 IXGBE_READ_REG(hw, IXGBE_PTC1023);
408 IXGBE_READ_REG(hw, IXGBE_PTC1522);
409 IXGBE_READ_REG(hw, IXGBE_MPTC);
410 IXGBE_READ_REG(hw, IXGBE_BPTC);
411 for (i = 0; i < 16; i++) {
412 IXGBE_READ_REG(hw, IXGBE_QPRC(i));
413 IXGBE_READ_REG(hw, IXGBE_QPTC(i));
414 if (hw->mac.type >= ixgbe_mac_82599EB) {
415 IXGBE_READ_REG(hw, IXGBE_QBRC_L(i));
416 IXGBE_READ_REG(hw, IXGBE_QBRC_H(i));
417 IXGBE_READ_REG(hw, IXGBE_QBTC_L(i));
418 IXGBE_READ_REG(hw, IXGBE_QBTC_H(i));
419 IXGBE_READ_REG(hw, IXGBE_QPRDC(i));
421 IXGBE_READ_REG(hw, IXGBE_QBRC(i));
422 IXGBE_READ_REG(hw, IXGBE_QBTC(i));
426 if (hw->mac.type == ixgbe_mac_X540) {
428 hw->phy.ops.identify(hw);
429 hw->phy.ops.read_reg(hw, IXGBE_PCRC8ECL, MDIO_MMD_PCS, &i);
430 hw->phy.ops.read_reg(hw, IXGBE_PCRC8ECH, MDIO_MMD_PCS, &i);
431 hw->phy.ops.read_reg(hw, IXGBE_LDPCECL, MDIO_MMD_PCS, &i);
432 hw->phy.ops.read_reg(hw, IXGBE_LDPCECH, MDIO_MMD_PCS, &i);
439 * ixgbe_read_pba_string_generic - Reads part number string from EEPROM
440 * @hw: pointer to hardware structure
441 * @pba_num: stores the part number string from the EEPROM
442 * @pba_num_size: part number string buffer length
444 * Reads the part number string from the EEPROM.
446 s32 ixgbe_read_pba_string_generic(struct ixgbe_hw *hw, u8 *pba_num,
455 if (pba_num == NULL) {
456 hw_dbg(hw, "PBA string buffer was null\n");
457 return IXGBE_ERR_INVALID_ARGUMENT;
460 ret_val = hw->eeprom.ops.read(hw, IXGBE_PBANUM0_PTR, &data);
462 hw_dbg(hw, "NVM Read Error\n");
466 ret_val = hw->eeprom.ops.read(hw, IXGBE_PBANUM1_PTR, &pba_ptr);
468 hw_dbg(hw, "NVM Read Error\n");
473 * if data is not ptr guard the PBA must be in legacy format which
474 * means pba_ptr is actually our second data word for the PBA number
475 * and we can decode it into an ascii string
477 if (data != IXGBE_PBANUM_PTR_GUARD) {
478 hw_dbg(hw, "NVM PBA number is not stored as string\n");
480 /* we will need 11 characters to store the PBA */
481 if (pba_num_size < 11) {
482 hw_dbg(hw, "PBA string buffer too small\n");
483 return IXGBE_ERR_NO_SPACE;
486 /* extract hex string from data and pba_ptr */
487 pba_num[0] = (data >> 12) & 0xF;
488 pba_num[1] = (data >> 8) & 0xF;
489 pba_num[2] = (data >> 4) & 0xF;
490 pba_num[3] = data & 0xF;
491 pba_num[4] = (pba_ptr >> 12) & 0xF;
492 pba_num[5] = (pba_ptr >> 8) & 0xF;
495 pba_num[8] = (pba_ptr >> 4) & 0xF;
496 pba_num[9] = pba_ptr & 0xF;
498 /* put a null character on the end of our string */
501 /* switch all the data but the '-' to hex char */
502 for (offset = 0; offset < 10; offset++) {
503 if (pba_num[offset] < 0xA)
504 pba_num[offset] += '0';
505 else if (pba_num[offset] < 0x10)
506 pba_num[offset] += 'A' - 0xA;
512 ret_val = hw->eeprom.ops.read(hw, pba_ptr, &length);
514 hw_dbg(hw, "NVM Read Error\n");
518 if (length == 0xFFFF || length == 0) {
519 hw_dbg(hw, "NVM PBA number section invalid length\n");
520 return IXGBE_ERR_PBA_SECTION;
523 /* check if pba_num buffer is big enough */
524 if (pba_num_size < (((u32)length * 2) - 1)) {
525 hw_dbg(hw, "PBA string buffer too small\n");
526 return IXGBE_ERR_NO_SPACE;
529 /* trim pba length from start of string */
533 for (offset = 0; offset < length; offset++) {
534 ret_val = hw->eeprom.ops.read(hw, pba_ptr + offset, &data);
536 hw_dbg(hw, "NVM Read Error\n");
539 pba_num[offset * 2] = (u8)(data >> 8);
540 pba_num[(offset * 2) + 1] = (u8)(data & 0xFF);
542 pba_num[offset * 2] = '\0';
548 * ixgbe_get_mac_addr_generic - Generic get MAC address
549 * @hw: pointer to hardware structure
550 * @mac_addr: Adapter MAC address
552 * Reads the adapter's MAC address from first Receive Address Register (RAR0)
553 * A reset of the adapter must be performed prior to calling this function
554 * in order for the MAC address to have been loaded from the EEPROM into RAR0
556 s32 ixgbe_get_mac_addr_generic(struct ixgbe_hw *hw, u8 *mac_addr)
562 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(0));
563 rar_low = IXGBE_READ_REG(hw, IXGBE_RAL(0));
565 for (i = 0; i < 4; i++)
566 mac_addr[i] = (u8)(rar_low >> (i*8));
568 for (i = 0; i < 2; i++)
569 mac_addr[i+4] = (u8)(rar_high >> (i*8));
575 * ixgbe_get_bus_info_generic - Generic set PCI bus info
576 * @hw: pointer to hardware structure
578 * Sets the PCI bus info (speed, width, type) within the ixgbe_hw structure
580 s32 ixgbe_get_bus_info_generic(struct ixgbe_hw *hw)
582 struct ixgbe_adapter *adapter = hw->back;
583 struct ixgbe_mac_info *mac = &hw->mac;
586 hw->bus.type = ixgbe_bus_type_pci_express;
588 /* Get the negotiated link width and speed from PCI config space */
589 pci_read_config_word(adapter->pdev, IXGBE_PCI_LINK_STATUS,
592 switch (link_status & IXGBE_PCI_LINK_WIDTH) {
593 case IXGBE_PCI_LINK_WIDTH_1:
594 hw->bus.width = ixgbe_bus_width_pcie_x1;
596 case IXGBE_PCI_LINK_WIDTH_2:
597 hw->bus.width = ixgbe_bus_width_pcie_x2;
599 case IXGBE_PCI_LINK_WIDTH_4:
600 hw->bus.width = ixgbe_bus_width_pcie_x4;
602 case IXGBE_PCI_LINK_WIDTH_8:
603 hw->bus.width = ixgbe_bus_width_pcie_x8;
606 hw->bus.width = ixgbe_bus_width_unknown;
610 switch (link_status & IXGBE_PCI_LINK_SPEED) {
611 case IXGBE_PCI_LINK_SPEED_2500:
612 hw->bus.speed = ixgbe_bus_speed_2500;
614 case IXGBE_PCI_LINK_SPEED_5000:
615 hw->bus.speed = ixgbe_bus_speed_5000;
618 hw->bus.speed = ixgbe_bus_speed_unknown;
622 mac->ops.set_lan_id(hw);
628 * ixgbe_set_lan_id_multi_port_pcie - Set LAN id for PCIe multiple port devices
629 * @hw: pointer to the HW structure
631 * Determines the LAN function id by reading memory-mapped registers
632 * and swaps the port value if requested.
634 void ixgbe_set_lan_id_multi_port_pcie(struct ixgbe_hw *hw)
636 struct ixgbe_bus_info *bus = &hw->bus;
639 reg = IXGBE_READ_REG(hw, IXGBE_STATUS);
640 bus->func = (reg & IXGBE_STATUS_LAN_ID) >> IXGBE_STATUS_LAN_ID_SHIFT;
641 bus->lan_id = bus->func;
643 /* check for a port swap */
644 reg = IXGBE_READ_REG(hw, IXGBE_FACTPS);
645 if (reg & IXGBE_FACTPS_LFS)
650 * ixgbe_stop_adapter_generic - Generic stop Tx/Rx units
651 * @hw: pointer to hardware structure
653 * Sets the adapter_stopped flag within ixgbe_hw struct. Clears interrupts,
654 * disables transmit and receive units. The adapter_stopped flag is used by
655 * the shared code and drivers to determine if the adapter is in a stopped
656 * state and should not touch the hardware.
658 s32 ixgbe_stop_adapter_generic(struct ixgbe_hw *hw)
664 * Set the adapter_stopped flag so other driver functions stop touching
667 hw->adapter_stopped = true;
669 /* Disable the receive unit */
670 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, 0);
672 /* Clear interrupt mask to stop interrupts from being generated */
673 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK);
675 /* Clear any pending interrupts, flush previous writes */
676 IXGBE_READ_REG(hw, IXGBE_EICR);
678 /* Disable the transmit unit. Each queue must be disabled. */
679 for (i = 0; i < hw->mac.max_tx_queues; i++)
680 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(i), IXGBE_TXDCTL_SWFLSH);
682 /* Disable the receive unit by stopping each queue */
683 for (i = 0; i < hw->mac.max_rx_queues; i++) {
684 reg_val = IXGBE_READ_REG(hw, IXGBE_RXDCTL(i));
685 reg_val &= ~IXGBE_RXDCTL_ENABLE;
686 reg_val |= IXGBE_RXDCTL_SWFLSH;
687 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(i), reg_val);
690 /* flush all queues disables */
691 IXGBE_WRITE_FLUSH(hw);
692 usleep_range(1000, 2000);
695 * Prevent the PCI-E bus from from hanging by disabling PCI-E master
696 * access and verify no pending requests
698 return ixgbe_disable_pcie_master(hw);
702 * ixgbe_led_on_generic - Turns on the software controllable LEDs.
703 * @hw: pointer to hardware structure
704 * @index: led number to turn on
706 s32 ixgbe_led_on_generic(struct ixgbe_hw *hw, u32 index)
708 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
710 /* To turn on the LED, set mode to ON. */
711 led_reg &= ~IXGBE_LED_MODE_MASK(index);
712 led_reg |= IXGBE_LED_ON << IXGBE_LED_MODE_SHIFT(index);
713 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
714 IXGBE_WRITE_FLUSH(hw);
720 * ixgbe_led_off_generic - Turns off the software controllable LEDs.
721 * @hw: pointer to hardware structure
722 * @index: led number to turn off
724 s32 ixgbe_led_off_generic(struct ixgbe_hw *hw, u32 index)
726 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
728 /* To turn off the LED, set mode to OFF. */
729 led_reg &= ~IXGBE_LED_MODE_MASK(index);
730 led_reg |= IXGBE_LED_OFF << IXGBE_LED_MODE_SHIFT(index);
731 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
732 IXGBE_WRITE_FLUSH(hw);
738 * ixgbe_init_eeprom_params_generic - Initialize EEPROM params
739 * @hw: pointer to hardware structure
741 * Initializes the EEPROM parameters ixgbe_eeprom_info within the
742 * ixgbe_hw struct in order to set up EEPROM access.
744 s32 ixgbe_init_eeprom_params_generic(struct ixgbe_hw *hw)
746 struct ixgbe_eeprom_info *eeprom = &hw->eeprom;
750 if (eeprom->type == ixgbe_eeprom_uninitialized) {
751 eeprom->type = ixgbe_eeprom_none;
752 /* Set default semaphore delay to 10ms which is a well
754 eeprom->semaphore_delay = 10;
755 /* Clear EEPROM page size, it will be initialized as needed */
756 eeprom->word_page_size = 0;
759 * Check for EEPROM present first.
760 * If not present leave as none
762 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
763 if (eec & IXGBE_EEC_PRES) {
764 eeprom->type = ixgbe_eeprom_spi;
767 * SPI EEPROM is assumed here. This code would need to
768 * change if a future EEPROM is not SPI.
770 eeprom_size = (u16)((eec & IXGBE_EEC_SIZE) >>
771 IXGBE_EEC_SIZE_SHIFT);
772 eeprom->word_size = 1 << (eeprom_size +
773 IXGBE_EEPROM_WORD_SIZE_SHIFT);
776 if (eec & IXGBE_EEC_ADDR_SIZE)
777 eeprom->address_bits = 16;
779 eeprom->address_bits = 8;
780 hw_dbg(hw, "Eeprom params: type = %d, size = %d, address bits: "
781 "%d\n", eeprom->type, eeprom->word_size,
782 eeprom->address_bits);
789 * ixgbe_write_eeprom_buffer_bit_bang_generic - Write EEPROM using bit-bang
790 * @hw: pointer to hardware structure
791 * @offset: offset within the EEPROM to write
792 * @words: number of words
793 * @data: 16 bit word(s) to write to EEPROM
795 * Reads 16 bit word(s) from EEPROM through bit-bang method
797 s32 ixgbe_write_eeprom_buffer_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
798 u16 words, u16 *data)
803 hw->eeprom.ops.init_params(hw);
806 status = IXGBE_ERR_INVALID_ARGUMENT;
810 if (offset + words > hw->eeprom.word_size) {
811 status = IXGBE_ERR_EEPROM;
816 * The EEPROM page size cannot be queried from the chip. We do lazy
817 * initialization. It is worth to do that when we write large buffer.
819 if ((hw->eeprom.word_page_size == 0) &&
820 (words > IXGBE_EEPROM_PAGE_SIZE_MAX))
821 ixgbe_detect_eeprom_page_size_generic(hw, offset);
824 * We cannot hold synchronization semaphores for too long
825 * to avoid other entity starvation. However it is more efficient
826 * to read in bursts than synchronizing access for each word.
828 for (i = 0; i < words; i += IXGBE_EEPROM_RD_BUFFER_MAX_COUNT) {
829 count = (words - i) / IXGBE_EEPROM_RD_BUFFER_MAX_COUNT > 0 ?
830 IXGBE_EEPROM_RD_BUFFER_MAX_COUNT : (words - i);
831 status = ixgbe_write_eeprom_buffer_bit_bang(hw, offset + i,
843 * ixgbe_write_eeprom_buffer_bit_bang - Writes 16 bit word(s) to EEPROM
844 * @hw: pointer to hardware structure
845 * @offset: offset within the EEPROM to be written to
846 * @words: number of word(s)
847 * @data: 16 bit word(s) to be written to the EEPROM
849 * If ixgbe_eeprom_update_checksum is not called after this function, the
850 * EEPROM will most likely contain an invalid checksum.
852 static s32 ixgbe_write_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset,
853 u16 words, u16 *data)
859 u8 write_opcode = IXGBE_EEPROM_WRITE_OPCODE_SPI;
861 /* Prepare the EEPROM for writing */
862 status = ixgbe_acquire_eeprom(hw);
865 if (ixgbe_ready_eeprom(hw) != 0) {
866 ixgbe_release_eeprom(hw);
867 status = IXGBE_ERR_EEPROM;
872 for (i = 0; i < words; i++) {
873 ixgbe_standby_eeprom(hw);
875 /* Send the WRITE ENABLE command (8 bit opcode ) */
876 ixgbe_shift_out_eeprom_bits(hw,
877 IXGBE_EEPROM_WREN_OPCODE_SPI,
878 IXGBE_EEPROM_OPCODE_BITS);
880 ixgbe_standby_eeprom(hw);
883 * Some SPI eeproms use the 8th address bit embedded
886 if ((hw->eeprom.address_bits == 8) &&
887 ((offset + i) >= 128))
888 write_opcode |= IXGBE_EEPROM_A8_OPCODE_SPI;
890 /* Send the Write command (8-bit opcode + addr) */
891 ixgbe_shift_out_eeprom_bits(hw, write_opcode,
892 IXGBE_EEPROM_OPCODE_BITS);
893 ixgbe_shift_out_eeprom_bits(hw, (u16)((offset + i) * 2),
894 hw->eeprom.address_bits);
896 page_size = hw->eeprom.word_page_size;
898 /* Send the data in burst via SPI*/
901 word = (word >> 8) | (word << 8);
902 ixgbe_shift_out_eeprom_bits(hw, word, 16);
907 /* do not wrap around page */
908 if (((offset + i) & (page_size - 1)) ==
911 } while (++i < words);
913 ixgbe_standby_eeprom(hw);
914 usleep_range(10000, 20000);
916 /* Done with writing - release the EEPROM */
917 ixgbe_release_eeprom(hw);
924 * ixgbe_write_eeprom_generic - Writes 16 bit value to EEPROM
925 * @hw: pointer to hardware structure
926 * @offset: offset within the EEPROM to be written to
927 * @data: 16 bit word to be written to the EEPROM
929 * If ixgbe_eeprom_update_checksum is not called after this function, the
930 * EEPROM will most likely contain an invalid checksum.
932 s32 ixgbe_write_eeprom_generic(struct ixgbe_hw *hw, u16 offset, u16 data)
936 hw->eeprom.ops.init_params(hw);
938 if (offset >= hw->eeprom.word_size) {
939 status = IXGBE_ERR_EEPROM;
943 status = ixgbe_write_eeprom_buffer_bit_bang(hw, offset, 1, &data);
950 * ixgbe_read_eeprom_buffer_bit_bang_generic - Read EEPROM using bit-bang
951 * @hw: pointer to hardware structure
952 * @offset: offset within the EEPROM to be read
953 * @words: number of word(s)
954 * @data: read 16 bit words(s) from EEPROM
956 * Reads 16 bit word(s) from EEPROM through bit-bang method
958 s32 ixgbe_read_eeprom_buffer_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
959 u16 words, u16 *data)
964 hw->eeprom.ops.init_params(hw);
967 status = IXGBE_ERR_INVALID_ARGUMENT;
971 if (offset + words > hw->eeprom.word_size) {
972 status = IXGBE_ERR_EEPROM;
977 * We cannot hold synchronization semaphores for too long
978 * to avoid other entity starvation. However it is more efficient
979 * to read in bursts than synchronizing access for each word.
981 for (i = 0; i < words; i += IXGBE_EEPROM_RD_BUFFER_MAX_COUNT) {
982 count = (words - i) / IXGBE_EEPROM_RD_BUFFER_MAX_COUNT > 0 ?
983 IXGBE_EEPROM_RD_BUFFER_MAX_COUNT : (words - i);
985 status = ixgbe_read_eeprom_buffer_bit_bang(hw, offset + i,
997 * ixgbe_read_eeprom_buffer_bit_bang - Read EEPROM using bit-bang
998 * @hw: pointer to hardware structure
999 * @offset: offset within the EEPROM to be read
1000 * @words: number of word(s)
1001 * @data: read 16 bit word(s) from EEPROM
1003 * Reads 16 bit word(s) from EEPROM through bit-bang method
1005 static s32 ixgbe_read_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset,
1006 u16 words, u16 *data)
1010 u8 read_opcode = IXGBE_EEPROM_READ_OPCODE_SPI;
1013 /* Prepare the EEPROM for reading */
1014 status = ixgbe_acquire_eeprom(hw);
1017 if (ixgbe_ready_eeprom(hw) != 0) {
1018 ixgbe_release_eeprom(hw);
1019 status = IXGBE_ERR_EEPROM;
1024 for (i = 0; i < words; i++) {
1025 ixgbe_standby_eeprom(hw);
1027 * Some SPI eeproms use the 8th address bit embedded
1030 if ((hw->eeprom.address_bits == 8) &&
1031 ((offset + i) >= 128))
1032 read_opcode |= IXGBE_EEPROM_A8_OPCODE_SPI;
1034 /* Send the READ command (opcode + addr) */
1035 ixgbe_shift_out_eeprom_bits(hw, read_opcode,
1036 IXGBE_EEPROM_OPCODE_BITS);
1037 ixgbe_shift_out_eeprom_bits(hw, (u16)((offset + i) * 2),
1038 hw->eeprom.address_bits);
1040 /* Read the data. */
1041 word_in = ixgbe_shift_in_eeprom_bits(hw, 16);
1042 data[i] = (word_in >> 8) | (word_in << 8);
1045 /* End this read operation */
1046 ixgbe_release_eeprom(hw);
1053 * ixgbe_read_eeprom_bit_bang_generic - Read EEPROM word using bit-bang
1054 * @hw: pointer to hardware structure
1055 * @offset: offset within the EEPROM to be read
1056 * @data: read 16 bit value from EEPROM
1058 * Reads 16 bit value from EEPROM through bit-bang method
1060 s32 ixgbe_read_eeprom_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
1065 hw->eeprom.ops.init_params(hw);
1067 if (offset >= hw->eeprom.word_size) {
1068 status = IXGBE_ERR_EEPROM;
1072 status = ixgbe_read_eeprom_buffer_bit_bang(hw, offset, 1, data);
1079 * ixgbe_read_eerd_buffer_generic - Read EEPROM word(s) using EERD
1080 * @hw: pointer to hardware structure
1081 * @offset: offset of word in the EEPROM to read
1082 * @words: number of word(s)
1083 * @data: 16 bit word(s) from the EEPROM
1085 * Reads a 16 bit word(s) from the EEPROM using the EERD register.
1087 s32 ixgbe_read_eerd_buffer_generic(struct ixgbe_hw *hw, u16 offset,
1088 u16 words, u16 *data)
1094 hw->eeprom.ops.init_params(hw);
1097 status = IXGBE_ERR_INVALID_ARGUMENT;
1101 if (offset >= hw->eeprom.word_size) {
1102 status = IXGBE_ERR_EEPROM;
1106 for (i = 0; i < words; i++) {
1107 eerd = ((offset + i) << IXGBE_EEPROM_RW_ADDR_SHIFT) +
1108 IXGBE_EEPROM_RW_REG_START;
1110 IXGBE_WRITE_REG(hw, IXGBE_EERD, eerd);
1111 status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_READ);
1114 data[i] = (IXGBE_READ_REG(hw, IXGBE_EERD) >>
1115 IXGBE_EEPROM_RW_REG_DATA);
1117 hw_dbg(hw, "Eeprom read timed out\n");
1126 * ixgbe_detect_eeprom_page_size_generic - Detect EEPROM page size
1127 * @hw: pointer to hardware structure
1128 * @offset: offset within the EEPROM to be used as a scratch pad
1130 * Discover EEPROM page size by writing marching data at given offset.
1131 * This function is called only when we are writing a new large buffer
1132 * at given offset so the data would be overwritten anyway.
1134 static s32 ixgbe_detect_eeprom_page_size_generic(struct ixgbe_hw *hw,
1137 u16 data[IXGBE_EEPROM_PAGE_SIZE_MAX];
1141 for (i = 0; i < IXGBE_EEPROM_PAGE_SIZE_MAX; i++)
1144 hw->eeprom.word_page_size = IXGBE_EEPROM_PAGE_SIZE_MAX;
1145 status = ixgbe_write_eeprom_buffer_bit_bang(hw, offset,
1146 IXGBE_EEPROM_PAGE_SIZE_MAX, data);
1147 hw->eeprom.word_page_size = 0;
1151 status = ixgbe_read_eeprom_buffer_bit_bang(hw, offset, 1, data);
1156 * When writing in burst more than the actual page size
1157 * EEPROM address wraps around current page.
1159 hw->eeprom.word_page_size = IXGBE_EEPROM_PAGE_SIZE_MAX - data[0];
1161 hw_dbg(hw, "Detected EEPROM page size = %d words.",
1162 hw->eeprom.word_page_size);
1168 * ixgbe_read_eerd_generic - Read EEPROM word using EERD
1169 * @hw: pointer to hardware structure
1170 * @offset: offset of word in the EEPROM to read
1171 * @data: word read from the EEPROM
1173 * Reads a 16 bit word from the EEPROM using the EERD register.
1175 s32 ixgbe_read_eerd_generic(struct ixgbe_hw *hw, u16 offset, u16 *data)
1177 return ixgbe_read_eerd_buffer_generic(hw, offset, 1, data);
1181 * ixgbe_write_eewr_buffer_generic - Write EEPROM word(s) using EEWR
1182 * @hw: pointer to hardware structure
1183 * @offset: offset of word in the EEPROM to write
1184 * @words: number of words
1185 * @data: word(s) write to the EEPROM
1187 * Write a 16 bit word(s) to the EEPROM using the EEWR register.
1189 s32 ixgbe_write_eewr_buffer_generic(struct ixgbe_hw *hw, u16 offset,
1190 u16 words, u16 *data)
1196 hw->eeprom.ops.init_params(hw);
1199 status = IXGBE_ERR_INVALID_ARGUMENT;
1203 if (offset >= hw->eeprom.word_size) {
1204 status = IXGBE_ERR_EEPROM;
1208 for (i = 0; i < words; i++) {
1209 eewr = ((offset + i) << IXGBE_EEPROM_RW_ADDR_SHIFT) |
1210 (data[i] << IXGBE_EEPROM_RW_REG_DATA) |
1211 IXGBE_EEPROM_RW_REG_START;
1213 status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_WRITE);
1215 hw_dbg(hw, "Eeprom write EEWR timed out\n");
1219 IXGBE_WRITE_REG(hw, IXGBE_EEWR, eewr);
1221 status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_WRITE);
1223 hw_dbg(hw, "Eeprom write EEWR timed out\n");
1233 * ixgbe_write_eewr_generic - Write EEPROM word using EEWR
1234 * @hw: pointer to hardware structure
1235 * @offset: offset of word in the EEPROM to write
1236 * @data: word write to the EEPROM
1238 * Write a 16 bit word to the EEPROM using the EEWR register.
1240 s32 ixgbe_write_eewr_generic(struct ixgbe_hw *hw, u16 offset, u16 data)
1242 return ixgbe_write_eewr_buffer_generic(hw, offset, 1, &data);
1246 * ixgbe_poll_eerd_eewr_done - Poll EERD read or EEWR write status
1247 * @hw: pointer to hardware structure
1248 * @ee_reg: EEPROM flag for polling
1250 * Polls the status bit (bit 1) of the EERD or EEWR to determine when the
1251 * read or write is done respectively.
1253 static s32 ixgbe_poll_eerd_eewr_done(struct ixgbe_hw *hw, u32 ee_reg)
1257 s32 status = IXGBE_ERR_EEPROM;
1259 for (i = 0; i < IXGBE_EERD_EEWR_ATTEMPTS; i++) {
1260 if (ee_reg == IXGBE_NVM_POLL_READ)
1261 reg = IXGBE_READ_REG(hw, IXGBE_EERD);
1263 reg = IXGBE_READ_REG(hw, IXGBE_EEWR);
1265 if (reg & IXGBE_EEPROM_RW_REG_DONE) {
1275 * ixgbe_acquire_eeprom - Acquire EEPROM using bit-bang
1276 * @hw: pointer to hardware structure
1278 * Prepares EEPROM for access using bit-bang method. This function should
1279 * be called before issuing a command to the EEPROM.
1281 static s32 ixgbe_acquire_eeprom(struct ixgbe_hw *hw)
1287 if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) != 0)
1288 status = IXGBE_ERR_SWFW_SYNC;
1291 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1293 /* Request EEPROM Access */
1294 eec |= IXGBE_EEC_REQ;
1295 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1297 for (i = 0; i < IXGBE_EEPROM_GRANT_ATTEMPTS; i++) {
1298 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1299 if (eec & IXGBE_EEC_GNT)
1304 /* Release if grant not acquired */
1305 if (!(eec & IXGBE_EEC_GNT)) {
1306 eec &= ~IXGBE_EEC_REQ;
1307 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1308 hw_dbg(hw, "Could not acquire EEPROM grant\n");
1310 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
1311 status = IXGBE_ERR_EEPROM;
1314 /* Setup EEPROM for Read/Write */
1316 /* Clear CS and SK */
1317 eec &= ~(IXGBE_EEC_CS | IXGBE_EEC_SK);
1318 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1319 IXGBE_WRITE_FLUSH(hw);
1327 * ixgbe_get_eeprom_semaphore - Get hardware semaphore
1328 * @hw: pointer to hardware structure
1330 * Sets the hardware semaphores so EEPROM access can occur for bit-bang method
1332 static s32 ixgbe_get_eeprom_semaphore(struct ixgbe_hw *hw)
1334 s32 status = IXGBE_ERR_EEPROM;
1339 /* Get SMBI software semaphore between device drivers first */
1340 for (i = 0; i < timeout; i++) {
1342 * If the SMBI bit is 0 when we read it, then the bit will be
1343 * set and we have the semaphore
1345 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
1346 if (!(swsm & IXGBE_SWSM_SMBI)) {
1354 hw_dbg(hw, "Driver can't access the Eeprom - SMBI Semaphore "
1357 * this release is particularly important because our attempts
1358 * above to get the semaphore may have succeeded, and if there
1359 * was a timeout, we should unconditionally clear the semaphore
1360 * bits to free the driver to make progress
1362 ixgbe_release_eeprom_semaphore(hw);
1367 * If the SMBI bit is 0 when we read it, then the bit will be
1368 * set and we have the semaphore
1370 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
1371 if (!(swsm & IXGBE_SWSM_SMBI))
1375 /* Now get the semaphore between SW/FW through the SWESMBI bit */
1377 for (i = 0; i < timeout; i++) {
1378 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
1380 /* Set the SW EEPROM semaphore bit to request access */
1381 swsm |= IXGBE_SWSM_SWESMBI;
1382 IXGBE_WRITE_REG(hw, IXGBE_SWSM, swsm);
1385 * If we set the bit successfully then we got the
1388 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
1389 if (swsm & IXGBE_SWSM_SWESMBI)
1396 * Release semaphores and return error if SW EEPROM semaphore
1397 * was not granted because we don't have access to the EEPROM
1400 hw_dbg(hw, "SWESMBI Software EEPROM semaphore "
1402 ixgbe_release_eeprom_semaphore(hw);
1403 status = IXGBE_ERR_EEPROM;
1406 hw_dbg(hw, "Software semaphore SMBI between device drivers "
1414 * ixgbe_release_eeprom_semaphore - Release hardware semaphore
1415 * @hw: pointer to hardware structure
1417 * This function clears hardware semaphore bits.
1419 static void ixgbe_release_eeprom_semaphore(struct ixgbe_hw *hw)
1423 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
1425 /* Release both semaphores by writing 0 to the bits SWESMBI and SMBI */
1426 swsm &= ~(IXGBE_SWSM_SWESMBI | IXGBE_SWSM_SMBI);
1427 IXGBE_WRITE_REG(hw, IXGBE_SWSM, swsm);
1428 IXGBE_WRITE_FLUSH(hw);
1432 * ixgbe_ready_eeprom - Polls for EEPROM ready
1433 * @hw: pointer to hardware structure
1435 static s32 ixgbe_ready_eeprom(struct ixgbe_hw *hw)
1442 * Read "Status Register" repeatedly until the LSB is cleared. The
1443 * EEPROM will signal that the command has been completed by clearing
1444 * bit 0 of the internal status register. If it's not cleared within
1445 * 5 milliseconds, then error out.
1447 for (i = 0; i < IXGBE_EEPROM_MAX_RETRY_SPI; i += 5) {
1448 ixgbe_shift_out_eeprom_bits(hw, IXGBE_EEPROM_RDSR_OPCODE_SPI,
1449 IXGBE_EEPROM_OPCODE_BITS);
1450 spi_stat_reg = (u8)ixgbe_shift_in_eeprom_bits(hw, 8);
1451 if (!(spi_stat_reg & IXGBE_EEPROM_STATUS_RDY_SPI))
1455 ixgbe_standby_eeprom(hw);
1459 * On some parts, SPI write time could vary from 0-20mSec on 3.3V
1460 * devices (and only 0-5mSec on 5V devices)
1462 if (i >= IXGBE_EEPROM_MAX_RETRY_SPI) {
1463 hw_dbg(hw, "SPI EEPROM Status error\n");
1464 status = IXGBE_ERR_EEPROM;
1471 * ixgbe_standby_eeprom - Returns EEPROM to a "standby" state
1472 * @hw: pointer to hardware structure
1474 static void ixgbe_standby_eeprom(struct ixgbe_hw *hw)
1478 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1480 /* Toggle CS to flush commands */
1481 eec |= IXGBE_EEC_CS;
1482 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1483 IXGBE_WRITE_FLUSH(hw);
1485 eec &= ~IXGBE_EEC_CS;
1486 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1487 IXGBE_WRITE_FLUSH(hw);
1492 * ixgbe_shift_out_eeprom_bits - Shift data bits out to the EEPROM.
1493 * @hw: pointer to hardware structure
1494 * @data: data to send to the EEPROM
1495 * @count: number of bits to shift out
1497 static void ixgbe_shift_out_eeprom_bits(struct ixgbe_hw *hw, u16 data,
1504 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1507 * Mask is used to shift "count" bits of "data" out to the EEPROM
1508 * one bit at a time. Determine the starting bit based on count
1510 mask = 0x01 << (count - 1);
1512 for (i = 0; i < count; i++) {
1514 * A "1" is shifted out to the EEPROM by setting bit "DI" to a
1515 * "1", and then raising and then lowering the clock (the SK
1516 * bit controls the clock input to the EEPROM). A "0" is
1517 * shifted out to the EEPROM by setting "DI" to "0" and then
1518 * raising and then lowering the clock.
1521 eec |= IXGBE_EEC_DI;
1523 eec &= ~IXGBE_EEC_DI;
1525 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1526 IXGBE_WRITE_FLUSH(hw);
1530 ixgbe_raise_eeprom_clk(hw, &eec);
1531 ixgbe_lower_eeprom_clk(hw, &eec);
1534 * Shift mask to signify next bit of data to shift in to the
1540 /* We leave the "DI" bit set to "0" when we leave this routine. */
1541 eec &= ~IXGBE_EEC_DI;
1542 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1543 IXGBE_WRITE_FLUSH(hw);
1547 * ixgbe_shift_in_eeprom_bits - Shift data bits in from the EEPROM
1548 * @hw: pointer to hardware structure
1550 static u16 ixgbe_shift_in_eeprom_bits(struct ixgbe_hw *hw, u16 count)
1557 * In order to read a register from the EEPROM, we need to shift
1558 * 'count' bits in from the EEPROM. Bits are "shifted in" by raising
1559 * the clock input to the EEPROM (setting the SK bit), and then reading
1560 * the value of the "DO" bit. During this "shifting in" process the
1561 * "DI" bit should always be clear.
1563 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1565 eec &= ~(IXGBE_EEC_DO | IXGBE_EEC_DI);
1567 for (i = 0; i < count; i++) {
1569 ixgbe_raise_eeprom_clk(hw, &eec);
1571 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1573 eec &= ~(IXGBE_EEC_DI);
1574 if (eec & IXGBE_EEC_DO)
1577 ixgbe_lower_eeprom_clk(hw, &eec);
1584 * ixgbe_raise_eeprom_clk - Raises the EEPROM's clock input.
1585 * @hw: pointer to hardware structure
1586 * @eec: EEC register's current value
1588 static void ixgbe_raise_eeprom_clk(struct ixgbe_hw *hw, u32 *eec)
1591 * Raise the clock input to the EEPROM
1592 * (setting the SK bit), then delay
1594 *eec = *eec | IXGBE_EEC_SK;
1595 IXGBE_WRITE_REG(hw, IXGBE_EEC, *eec);
1596 IXGBE_WRITE_FLUSH(hw);
1601 * ixgbe_lower_eeprom_clk - Lowers the EEPROM's clock input.
1602 * @hw: pointer to hardware structure
1603 * @eecd: EECD's current value
1605 static void ixgbe_lower_eeprom_clk(struct ixgbe_hw *hw, u32 *eec)
1608 * Lower the clock input to the EEPROM (clearing the SK bit), then
1611 *eec = *eec & ~IXGBE_EEC_SK;
1612 IXGBE_WRITE_REG(hw, IXGBE_EEC, *eec);
1613 IXGBE_WRITE_FLUSH(hw);
1618 * ixgbe_release_eeprom - Release EEPROM, release semaphores
1619 * @hw: pointer to hardware structure
1621 static void ixgbe_release_eeprom(struct ixgbe_hw *hw)
1625 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1627 eec |= IXGBE_EEC_CS; /* Pull CS high */
1628 eec &= ~IXGBE_EEC_SK; /* Lower SCK */
1630 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1631 IXGBE_WRITE_FLUSH(hw);
1635 /* Stop requesting EEPROM access */
1636 eec &= ~IXGBE_EEC_REQ;
1637 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1639 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
1642 * Delay before attempt to obtain semaphore again to allow FW
1643 * access. semaphore_delay is in ms we need us for usleep_range
1645 usleep_range(hw->eeprom.semaphore_delay * 1000,
1646 hw->eeprom.semaphore_delay * 2000);
1650 * ixgbe_calc_eeprom_checksum_generic - Calculates and returns the checksum
1651 * @hw: pointer to hardware structure
1653 u16 ixgbe_calc_eeprom_checksum_generic(struct ixgbe_hw *hw)
1662 /* Include 0x0-0x3F in the checksum */
1663 for (i = 0; i < IXGBE_EEPROM_CHECKSUM; i++) {
1664 if (hw->eeprom.ops.read(hw, i, &word) != 0) {
1665 hw_dbg(hw, "EEPROM read failed\n");
1671 /* Include all data from pointers except for the fw pointer */
1672 for (i = IXGBE_PCIE_ANALOG_PTR; i < IXGBE_FW_PTR; i++) {
1673 hw->eeprom.ops.read(hw, i, &pointer);
1675 /* Make sure the pointer seems valid */
1676 if (pointer != 0xFFFF && pointer != 0) {
1677 hw->eeprom.ops.read(hw, pointer, &length);
1679 if (length != 0xFFFF && length != 0) {
1680 for (j = pointer+1; j <= pointer+length; j++) {
1681 hw->eeprom.ops.read(hw, j, &word);
1688 checksum = (u16)IXGBE_EEPROM_SUM - checksum;
1694 * ixgbe_validate_eeprom_checksum_generic - Validate EEPROM checksum
1695 * @hw: pointer to hardware structure
1696 * @checksum_val: calculated checksum
1698 * Performs checksum calculation and validates the EEPROM checksum. If the
1699 * caller does not need checksum_val, the value can be NULL.
1701 s32 ixgbe_validate_eeprom_checksum_generic(struct ixgbe_hw *hw,
1706 u16 read_checksum = 0;
1709 * Read the first word from the EEPROM. If this times out or fails, do
1710 * not continue or we could be in for a very long wait while every
1713 status = hw->eeprom.ops.read(hw, 0, &checksum);
1716 checksum = hw->eeprom.ops.calc_checksum(hw);
1718 hw->eeprom.ops.read(hw, IXGBE_EEPROM_CHECKSUM, &read_checksum);
1721 * Verify read checksum from EEPROM is the same as
1722 * calculated checksum
1724 if (read_checksum != checksum)
1725 status = IXGBE_ERR_EEPROM_CHECKSUM;
1727 /* If the user cares, return the calculated checksum */
1729 *checksum_val = checksum;
1731 hw_dbg(hw, "EEPROM read failed\n");
1738 * ixgbe_update_eeprom_checksum_generic - Updates the EEPROM checksum
1739 * @hw: pointer to hardware structure
1741 s32 ixgbe_update_eeprom_checksum_generic(struct ixgbe_hw *hw)
1747 * Read the first word from the EEPROM. If this times out or fails, do
1748 * not continue or we could be in for a very long wait while every
1751 status = hw->eeprom.ops.read(hw, 0, &checksum);
1754 checksum = hw->eeprom.ops.calc_checksum(hw);
1755 status = hw->eeprom.ops.write(hw, IXGBE_EEPROM_CHECKSUM,
1758 hw_dbg(hw, "EEPROM read failed\n");
1765 * ixgbe_validate_mac_addr - Validate MAC address
1766 * @mac_addr: pointer to MAC address.
1768 * Tests a MAC address to ensure it is a valid Individual Address
1770 s32 ixgbe_validate_mac_addr(u8 *mac_addr)
1774 /* Make sure it is not a multicast address */
1775 if (IXGBE_IS_MULTICAST(mac_addr))
1776 status = IXGBE_ERR_INVALID_MAC_ADDR;
1777 /* Not a broadcast address */
1778 else if (IXGBE_IS_BROADCAST(mac_addr))
1779 status = IXGBE_ERR_INVALID_MAC_ADDR;
1780 /* Reject the zero address */
1781 else if (mac_addr[0] == 0 && mac_addr[1] == 0 && mac_addr[2] == 0 &&
1782 mac_addr[3] == 0 && mac_addr[4] == 0 && mac_addr[5] == 0)
1783 status = IXGBE_ERR_INVALID_MAC_ADDR;
1789 * ixgbe_set_rar_generic - Set Rx address register
1790 * @hw: pointer to hardware structure
1791 * @index: Receive address register to write
1792 * @addr: Address to put into receive address register
1793 * @vmdq: VMDq "set" or "pool" index
1794 * @enable_addr: set flag that address is active
1796 * Puts an ethernet address into a receive address register.
1798 s32 ixgbe_set_rar_generic(struct ixgbe_hw *hw, u32 index, u8 *addr, u32 vmdq,
1801 u32 rar_low, rar_high;
1802 u32 rar_entries = hw->mac.num_rar_entries;
1804 /* Make sure we are using a valid rar index range */
1805 if (index >= rar_entries) {
1806 hw_dbg(hw, "RAR index %d is out of range.\n", index);
1807 return IXGBE_ERR_INVALID_ARGUMENT;
1810 /* setup VMDq pool selection before this RAR gets enabled */
1811 hw->mac.ops.set_vmdq(hw, index, vmdq);
1814 * HW expects these in little endian so we reverse the byte
1815 * order from network order (big endian) to little endian
1817 rar_low = ((u32)addr[0] |
1818 ((u32)addr[1] << 8) |
1819 ((u32)addr[2] << 16) |
1820 ((u32)addr[3] << 24));
1822 * Some parts put the VMDq setting in the extra RAH bits,
1823 * so save everything except the lower 16 bits that hold part
1824 * of the address and the address valid bit.
1826 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index));
1827 rar_high &= ~(0x0000FFFF | IXGBE_RAH_AV);
1828 rar_high |= ((u32)addr[4] | ((u32)addr[5] << 8));
1830 if (enable_addr != 0)
1831 rar_high |= IXGBE_RAH_AV;
1833 IXGBE_WRITE_REG(hw, IXGBE_RAL(index), rar_low);
1834 IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high);
1840 * ixgbe_clear_rar_generic - Remove Rx address register
1841 * @hw: pointer to hardware structure
1842 * @index: Receive address register to write
1844 * Clears an ethernet address from a receive address register.
1846 s32 ixgbe_clear_rar_generic(struct ixgbe_hw *hw, u32 index)
1849 u32 rar_entries = hw->mac.num_rar_entries;
1851 /* Make sure we are using a valid rar index range */
1852 if (index >= rar_entries) {
1853 hw_dbg(hw, "RAR index %d is out of range.\n", index);
1854 return IXGBE_ERR_INVALID_ARGUMENT;
1858 * Some parts put the VMDq setting in the extra RAH bits,
1859 * so save everything except the lower 16 bits that hold part
1860 * of the address and the address valid bit.
1862 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index));
1863 rar_high &= ~(0x0000FFFF | IXGBE_RAH_AV);
1865 IXGBE_WRITE_REG(hw, IXGBE_RAL(index), 0);
1866 IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high);
1868 /* clear VMDq pool/queue selection for this RAR */
1869 hw->mac.ops.clear_vmdq(hw, index, IXGBE_CLEAR_VMDQ_ALL);
1875 * ixgbe_init_rx_addrs_generic - Initializes receive address filters.
1876 * @hw: pointer to hardware structure
1878 * Places the MAC address in receive address register 0 and clears the rest
1879 * of the receive address registers. Clears the multicast table. Assumes
1880 * the receiver is in reset when the routine is called.
1882 s32 ixgbe_init_rx_addrs_generic(struct ixgbe_hw *hw)
1885 u32 rar_entries = hw->mac.num_rar_entries;
1888 * If the current mac address is valid, assume it is a software override
1889 * to the permanent address.
1890 * Otherwise, use the permanent address from the eeprom.
1892 if (ixgbe_validate_mac_addr(hw->mac.addr) ==
1893 IXGBE_ERR_INVALID_MAC_ADDR) {
1894 /* Get the MAC address from the RAR0 for later reference */
1895 hw->mac.ops.get_mac_addr(hw, hw->mac.addr);
1897 hw_dbg(hw, " Keeping Current RAR0 Addr =%pM\n", hw->mac.addr);
1899 /* Setup the receive address. */
1900 hw_dbg(hw, "Overriding MAC Address in RAR[0]\n");
1901 hw_dbg(hw, " New MAC Addr =%pM\n", hw->mac.addr);
1903 hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0, IXGBE_RAH_AV);
1905 /* clear VMDq pool/queue selection for RAR 0 */
1906 hw->mac.ops.clear_vmdq(hw, 0, IXGBE_CLEAR_VMDQ_ALL);
1908 hw->addr_ctrl.overflow_promisc = 0;
1910 hw->addr_ctrl.rar_used_count = 1;
1912 /* Zero out the other receive addresses. */
1913 hw_dbg(hw, "Clearing RAR[1-%d]\n", rar_entries - 1);
1914 for (i = 1; i < rar_entries; i++) {
1915 IXGBE_WRITE_REG(hw, IXGBE_RAL(i), 0);
1916 IXGBE_WRITE_REG(hw, IXGBE_RAH(i), 0);
1920 hw->addr_ctrl.mta_in_use = 0;
1921 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, hw->mac.mc_filter_type);
1923 hw_dbg(hw, " Clearing MTA\n");
1924 for (i = 0; i < hw->mac.mcft_size; i++)
1925 IXGBE_WRITE_REG(hw, IXGBE_MTA(i), 0);
1927 if (hw->mac.ops.init_uta_tables)
1928 hw->mac.ops.init_uta_tables(hw);
1934 * ixgbe_mta_vector - Determines bit-vector in multicast table to set
1935 * @hw: pointer to hardware structure
1936 * @mc_addr: the multicast address
1938 * Extracts the 12 bits, from a multicast address, to determine which
1939 * bit-vector to set in the multicast table. The hardware uses 12 bits, from
1940 * incoming rx multicast addresses, to determine the bit-vector to check in
1941 * the MTA. Which of the 4 combination, of 12-bits, the hardware uses is set
1942 * by the MO field of the MCSTCTRL. The MO field is set during initialization
1943 * to mc_filter_type.
1945 static s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr)
1949 switch (hw->mac.mc_filter_type) {
1950 case 0: /* use bits [47:36] of the address */
1951 vector = ((mc_addr[4] >> 4) | (((u16)mc_addr[5]) << 4));
1953 case 1: /* use bits [46:35] of the address */
1954 vector = ((mc_addr[4] >> 3) | (((u16)mc_addr[5]) << 5));
1956 case 2: /* use bits [45:34] of the address */
1957 vector = ((mc_addr[4] >> 2) | (((u16)mc_addr[5]) << 6));
1959 case 3: /* use bits [43:32] of the address */
1960 vector = ((mc_addr[4]) | (((u16)mc_addr[5]) << 8));
1962 default: /* Invalid mc_filter_type */
1963 hw_dbg(hw, "MC filter type param set incorrectly\n");
1967 /* vector can only be 12-bits or boundary will be exceeded */
1973 * ixgbe_set_mta - Set bit-vector in multicast table
1974 * @hw: pointer to hardware structure
1975 * @hash_value: Multicast address hash value
1977 * Sets the bit-vector in the multicast table.
1979 static void ixgbe_set_mta(struct ixgbe_hw *hw, u8 *mc_addr)
1985 hw->addr_ctrl.mta_in_use++;
1987 vector = ixgbe_mta_vector(hw, mc_addr);
1988 hw_dbg(hw, " bit-vector = 0x%03X\n", vector);
1991 * The MTA is a register array of 128 32-bit registers. It is treated
1992 * like an array of 4096 bits. We want to set bit
1993 * BitArray[vector_value]. So we figure out what register the bit is
1994 * in, read it, OR in the new bit, then write back the new value. The
1995 * register is determined by the upper 7 bits of the vector value and
1996 * the bit within that register are determined by the lower 5 bits of
1999 vector_reg = (vector >> 5) & 0x7F;
2000 vector_bit = vector & 0x1F;
2001 hw->mac.mta_shadow[vector_reg] |= (1 << vector_bit);
2005 * ixgbe_update_mc_addr_list_generic - Updates MAC list of multicast addresses
2006 * @hw: pointer to hardware structure
2007 * @netdev: pointer to net device structure
2009 * The given list replaces any existing list. Clears the MC addrs from receive
2010 * address registers and the multicast table. Uses unused receive address
2011 * registers for the first multicast addresses, and hashes the rest into the
2014 s32 ixgbe_update_mc_addr_list_generic(struct ixgbe_hw *hw,
2015 struct net_device *netdev)
2017 struct netdev_hw_addr *ha;
2021 * Set the new number of MC addresses that we are being requested to
2024 hw->addr_ctrl.num_mc_addrs = netdev_mc_count(netdev);
2025 hw->addr_ctrl.mta_in_use = 0;
2027 /* Clear mta_shadow */
2028 hw_dbg(hw, " Clearing MTA\n");
2029 memset(&hw->mac.mta_shadow, 0, sizeof(hw->mac.mta_shadow));
2031 /* Update mta shadow */
2032 netdev_for_each_mc_addr(ha, netdev) {
2033 hw_dbg(hw, " Adding the multicast addresses:\n");
2034 ixgbe_set_mta(hw, ha->addr);
2038 for (i = 0; i < hw->mac.mcft_size; i++)
2039 IXGBE_WRITE_REG_ARRAY(hw, IXGBE_MTA(0), i,
2040 hw->mac.mta_shadow[i]);
2042 if (hw->addr_ctrl.mta_in_use > 0)
2043 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL,
2044 IXGBE_MCSTCTRL_MFE | hw->mac.mc_filter_type);
2046 hw_dbg(hw, "ixgbe_update_mc_addr_list_generic Complete\n");
2051 * ixgbe_enable_mc_generic - Enable multicast address in RAR
2052 * @hw: pointer to hardware structure
2054 * Enables multicast address in RAR and the use of the multicast hash table.
2056 s32 ixgbe_enable_mc_generic(struct ixgbe_hw *hw)
2058 struct ixgbe_addr_filter_info *a = &hw->addr_ctrl;
2060 if (a->mta_in_use > 0)
2061 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, IXGBE_MCSTCTRL_MFE |
2062 hw->mac.mc_filter_type);
2068 * ixgbe_disable_mc_generic - Disable multicast address in RAR
2069 * @hw: pointer to hardware structure
2071 * Disables multicast address in RAR and the use of the multicast hash table.
2073 s32 ixgbe_disable_mc_generic(struct ixgbe_hw *hw)
2075 struct ixgbe_addr_filter_info *a = &hw->addr_ctrl;
2077 if (a->mta_in_use > 0)
2078 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, hw->mac.mc_filter_type);
2084 * ixgbe_fc_enable_generic - Enable flow control
2085 * @hw: pointer to hardware structure
2087 * Enable flow control according to the current settings.
2089 s32 ixgbe_fc_enable_generic(struct ixgbe_hw *hw)
2092 u32 mflcn_reg, fccfg_reg;
2098 * Validate the water mark configuration for packet buffer 0. Zero
2099 * water marks indicate that the packet buffer was not configured
2100 * and the watermarks for packet buffer 0 should always be configured.
2102 if (!hw->fc.low_water ||
2103 !hw->fc.high_water[0] ||
2104 !hw->fc.pause_time) {
2105 hw_dbg(hw, "Invalid water mark configuration\n");
2106 ret_val = IXGBE_ERR_INVALID_LINK_SETTINGS;
2110 /* Negotiate the fc mode to use */
2111 ixgbe_fc_autoneg(hw);
2113 /* Disable any previous flow control settings */
2114 mflcn_reg = IXGBE_READ_REG(hw, IXGBE_MFLCN);
2115 mflcn_reg &= ~(IXGBE_MFLCN_RPFCE_MASK | IXGBE_MFLCN_RFCE);
2117 fccfg_reg = IXGBE_READ_REG(hw, IXGBE_FCCFG);
2118 fccfg_reg &= ~(IXGBE_FCCFG_TFCE_802_3X | IXGBE_FCCFG_TFCE_PRIORITY);
2121 * The possible values of fc.current_mode are:
2122 * 0: Flow control is completely disabled
2123 * 1: Rx flow control is enabled (we can receive pause frames,
2124 * but not send pause frames).
2125 * 2: Tx flow control is enabled (we can send pause frames but
2126 * we do not support receiving pause frames).
2127 * 3: Both Rx and Tx flow control (symmetric) are enabled.
2130 switch (hw->fc.current_mode) {
2133 * Flow control is disabled by software override or autoneg.
2134 * The code below will actually disable it in the HW.
2137 case ixgbe_fc_rx_pause:
2139 * Rx Flow control is enabled and Tx Flow control is
2140 * disabled by software override. Since there really
2141 * isn't a way to advertise that we are capable of RX
2142 * Pause ONLY, we will advertise that we support both
2143 * symmetric and asymmetric Rx PAUSE. Later, we will
2144 * disable the adapter's ability to send PAUSE frames.
2146 mflcn_reg |= IXGBE_MFLCN_RFCE;
2148 case ixgbe_fc_tx_pause:
2150 * Tx Flow control is enabled, and Rx Flow control is
2151 * disabled by software override.
2153 fccfg_reg |= IXGBE_FCCFG_TFCE_802_3X;
2156 /* Flow control (both Rx and Tx) is enabled by SW override. */
2157 mflcn_reg |= IXGBE_MFLCN_RFCE;
2158 fccfg_reg |= IXGBE_FCCFG_TFCE_802_3X;
2161 hw_dbg(hw, "Flow control param set incorrectly\n");
2162 ret_val = IXGBE_ERR_CONFIG;
2167 /* Set 802.3x based flow control settings. */
2168 mflcn_reg |= IXGBE_MFLCN_DPF;
2169 IXGBE_WRITE_REG(hw, IXGBE_MFLCN, mflcn_reg);
2170 IXGBE_WRITE_REG(hw, IXGBE_FCCFG, fccfg_reg);
2172 fcrtl = (hw->fc.low_water << 10) | IXGBE_FCRTL_XONE;
2174 /* Set up and enable Rx high/low water mark thresholds, enable XON. */
2175 for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
2176 if ((hw->fc.current_mode & ixgbe_fc_tx_pause) &&
2177 hw->fc.high_water[i]) {
2178 IXGBE_WRITE_REG(hw, IXGBE_FCRTL_82599(i), fcrtl);
2179 fcrth = (hw->fc.high_water[i] << 10) | IXGBE_FCRTH_FCEN;
2181 IXGBE_WRITE_REG(hw, IXGBE_FCRTL_82599(i), 0);
2183 * In order to prevent Tx hangs when the internal Tx
2184 * switch is enabled we must set the high water mark
2185 * to the maximum FCRTH value. This allows the Tx
2186 * switch to function even under heavy Rx workloads.
2188 fcrth = IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(i)) - 32;
2191 IXGBE_WRITE_REG(hw, IXGBE_FCRTH_82599(i), fcrth);
2194 /* Configure pause time (2 TCs per register) */
2195 reg = hw->fc.pause_time * 0x00010001;
2196 for (i = 0; i < (MAX_TRAFFIC_CLASS / 2); i++)
2197 IXGBE_WRITE_REG(hw, IXGBE_FCTTV(i), reg);
2199 IXGBE_WRITE_REG(hw, IXGBE_FCRTV, hw->fc.pause_time / 2);
2206 * ixgbe_negotiate_fc - Negotiate flow control
2207 * @hw: pointer to hardware structure
2208 * @adv_reg: flow control advertised settings
2209 * @lp_reg: link partner's flow control settings
2210 * @adv_sym: symmetric pause bit in advertisement
2211 * @adv_asm: asymmetric pause bit in advertisement
2212 * @lp_sym: symmetric pause bit in link partner advertisement
2213 * @lp_asm: asymmetric pause bit in link partner advertisement
2215 * Find the intersection between advertised settings and link partner's
2216 * advertised settings
2218 static s32 ixgbe_negotiate_fc(struct ixgbe_hw *hw, u32 adv_reg, u32 lp_reg,
2219 u32 adv_sym, u32 adv_asm, u32 lp_sym, u32 lp_asm)
2221 if ((!(adv_reg)) || (!(lp_reg)))
2222 return IXGBE_ERR_FC_NOT_NEGOTIATED;
2224 if ((adv_reg & adv_sym) && (lp_reg & lp_sym)) {
2226 * Now we need to check if the user selected Rx ONLY
2227 * of pause frames. In this case, we had to advertise
2228 * FULL flow control because we could not advertise RX
2229 * ONLY. Hence, we must now check to see if we need to
2230 * turn OFF the TRANSMISSION of PAUSE frames.
2232 if (hw->fc.requested_mode == ixgbe_fc_full) {
2233 hw->fc.current_mode = ixgbe_fc_full;
2234 hw_dbg(hw, "Flow Control = FULL.\n");
2236 hw->fc.current_mode = ixgbe_fc_rx_pause;
2237 hw_dbg(hw, "Flow Control=RX PAUSE frames only\n");
2239 } else if (!(adv_reg & adv_sym) && (adv_reg & adv_asm) &&
2240 (lp_reg & lp_sym) && (lp_reg & lp_asm)) {
2241 hw->fc.current_mode = ixgbe_fc_tx_pause;
2242 hw_dbg(hw, "Flow Control = TX PAUSE frames only.\n");
2243 } else if ((adv_reg & adv_sym) && (adv_reg & adv_asm) &&
2244 !(lp_reg & lp_sym) && (lp_reg & lp_asm)) {
2245 hw->fc.current_mode = ixgbe_fc_rx_pause;
2246 hw_dbg(hw, "Flow Control = RX PAUSE frames only.\n");
2248 hw->fc.current_mode = ixgbe_fc_none;
2249 hw_dbg(hw, "Flow Control = NONE.\n");
2255 * ixgbe_fc_autoneg_fiber - Enable flow control on 1 gig fiber
2256 * @hw: pointer to hardware structure
2258 * Enable flow control according on 1 gig fiber.
2260 static s32 ixgbe_fc_autoneg_fiber(struct ixgbe_hw *hw)
2262 u32 pcs_anadv_reg, pcs_lpab_reg, linkstat;
2263 s32 ret_val = IXGBE_ERR_FC_NOT_NEGOTIATED;
2266 * On multispeed fiber at 1g, bail out if
2267 * - link is up but AN did not complete, or if
2268 * - link is up and AN completed but timed out
2271 linkstat = IXGBE_READ_REG(hw, IXGBE_PCS1GLSTA);
2272 if ((!!(linkstat & IXGBE_PCS1GLSTA_AN_COMPLETE) == 0) ||
2273 (!!(linkstat & IXGBE_PCS1GLSTA_AN_TIMED_OUT) == 1))
2276 pcs_anadv_reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANA);
2277 pcs_lpab_reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANLP);
2279 ret_val = ixgbe_negotiate_fc(hw, pcs_anadv_reg,
2280 pcs_lpab_reg, IXGBE_PCS1GANA_SYM_PAUSE,
2281 IXGBE_PCS1GANA_ASM_PAUSE,
2282 IXGBE_PCS1GANA_SYM_PAUSE,
2283 IXGBE_PCS1GANA_ASM_PAUSE);
2290 * ixgbe_fc_autoneg_backplane - Enable flow control IEEE clause 37
2291 * @hw: pointer to hardware structure
2293 * Enable flow control according to IEEE clause 37.
2295 static s32 ixgbe_fc_autoneg_backplane(struct ixgbe_hw *hw)
2297 u32 links2, anlp1_reg, autoc_reg, links;
2298 s32 ret_val = IXGBE_ERR_FC_NOT_NEGOTIATED;
2301 * On backplane, bail out if
2302 * - backplane autoneg was not completed, or if
2303 * - we are 82599 and link partner is not AN enabled
2305 links = IXGBE_READ_REG(hw, IXGBE_LINKS);
2306 if ((links & IXGBE_LINKS_KX_AN_COMP) == 0)
2309 if (hw->mac.type == ixgbe_mac_82599EB) {
2310 links2 = IXGBE_READ_REG(hw, IXGBE_LINKS2);
2311 if ((links2 & IXGBE_LINKS2_AN_SUPPORTED) == 0)
2315 * Read the 10g AN autoc and LP ability registers and resolve
2316 * local flow control settings accordingly
2318 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
2319 anlp1_reg = IXGBE_READ_REG(hw, IXGBE_ANLP1);
2321 ret_val = ixgbe_negotiate_fc(hw, autoc_reg,
2322 anlp1_reg, IXGBE_AUTOC_SYM_PAUSE, IXGBE_AUTOC_ASM_PAUSE,
2323 IXGBE_ANLP1_SYM_PAUSE, IXGBE_ANLP1_ASM_PAUSE);
2330 * ixgbe_fc_autoneg_copper - Enable flow control IEEE clause 37
2331 * @hw: pointer to hardware structure
2333 * Enable flow control according to IEEE clause 37.
2335 static s32 ixgbe_fc_autoneg_copper(struct ixgbe_hw *hw)
2337 u16 technology_ability_reg = 0;
2338 u16 lp_technology_ability_reg = 0;
2340 hw->phy.ops.read_reg(hw, MDIO_AN_ADVERTISE,
2342 &technology_ability_reg);
2343 hw->phy.ops.read_reg(hw, MDIO_AN_LPA,
2345 &lp_technology_ability_reg);
2347 return ixgbe_negotiate_fc(hw, (u32)technology_ability_reg,
2348 (u32)lp_technology_ability_reg,
2349 IXGBE_TAF_SYM_PAUSE, IXGBE_TAF_ASM_PAUSE,
2350 IXGBE_TAF_SYM_PAUSE, IXGBE_TAF_ASM_PAUSE);
2354 * ixgbe_fc_autoneg - Configure flow control
2355 * @hw: pointer to hardware structure
2357 * Compares our advertised flow control capabilities to those advertised by
2358 * our link partner, and determines the proper flow control mode to use.
2360 void ixgbe_fc_autoneg(struct ixgbe_hw *hw)
2362 s32 ret_val = IXGBE_ERR_FC_NOT_NEGOTIATED;
2363 ixgbe_link_speed speed;
2367 * AN should have completed when the cable was plugged in.
2368 * Look for reasons to bail out. Bail out if:
2369 * - FC autoneg is disabled, or if
2372 * Since we're being called from an LSC, link is already known to be up.
2373 * So use link_up_wait_to_complete=false.
2375 if (hw->fc.disable_fc_autoneg)
2378 hw->mac.ops.check_link(hw, &speed, &link_up, false);
2382 switch (hw->phy.media_type) {
2383 /* Autoneg flow control on fiber adapters */
2384 case ixgbe_media_type_fiber:
2385 if (speed == IXGBE_LINK_SPEED_1GB_FULL)
2386 ret_val = ixgbe_fc_autoneg_fiber(hw);
2389 /* Autoneg flow control on backplane adapters */
2390 case ixgbe_media_type_backplane:
2391 ret_val = ixgbe_fc_autoneg_backplane(hw);
2394 /* Autoneg flow control on copper adapters */
2395 case ixgbe_media_type_copper:
2396 if (ixgbe_device_supports_autoneg_fc(hw) == 0)
2397 ret_val = ixgbe_fc_autoneg_copper(hw);
2406 hw->fc.fc_was_autonegged = true;
2408 hw->fc.fc_was_autonegged = false;
2409 hw->fc.current_mode = hw->fc.requested_mode;
2414 * ixgbe_disable_pcie_master - Disable PCI-express master access
2415 * @hw: pointer to hardware structure
2417 * Disables PCI-Express master access and verifies there are no pending
2418 * requests. IXGBE_ERR_MASTER_REQUESTS_PENDING is returned if master disable
2419 * bit hasn't caused the master requests to be disabled, else 0
2420 * is returned signifying master requests disabled.
2422 static s32 ixgbe_disable_pcie_master(struct ixgbe_hw *hw)
2424 struct ixgbe_adapter *adapter = hw->back;
2429 /* Always set this bit to ensure any future transactions are blocked */
2430 IXGBE_WRITE_REG(hw, IXGBE_CTRL, IXGBE_CTRL_GIO_DIS);
2432 /* Exit if master requests are blocked */
2433 if (!(IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_GIO))
2436 /* Poll for master request bit to clear */
2437 for (i = 0; i < IXGBE_PCI_MASTER_DISABLE_TIMEOUT; i++) {
2439 if (!(IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_GIO))
2444 * Two consecutive resets are required via CTRL.RST per datasheet
2445 * 5.2.5.3.2 Master Disable. We set a flag to inform the reset routine
2446 * of this need. The first reset prevents new master requests from
2447 * being issued by our device. We then must wait 1usec or more for any
2448 * remaining completions from the PCIe bus to trickle in, and then reset
2449 * again to clear out any effects they may have had on our device.
2451 hw_dbg(hw, "GIO Master Disable bit didn't clear - requesting resets\n");
2452 hw->mac.flags |= IXGBE_FLAGS_DOUBLE_RESET_REQUIRED;
2455 * Before proceeding, make sure that the PCIe block does not have
2456 * transactions pending.
2458 for (i = 0; i < IXGBE_PCI_MASTER_DISABLE_TIMEOUT; i++) {
2460 pci_read_config_word(adapter->pdev, IXGBE_PCI_DEVICE_STATUS,
2462 if (!(value & IXGBE_PCI_DEVICE_STATUS_TRANSACTION_PENDING))
2466 hw_dbg(hw, "PCIe transaction pending bit also did not clear.\n");
2467 status = IXGBE_ERR_MASTER_REQUESTS_PENDING;
2474 * ixgbe_acquire_swfw_sync - Acquire SWFW semaphore
2475 * @hw: pointer to hardware structure
2476 * @mask: Mask to specify which semaphore to acquire
2478 * Acquires the SWFW semaphore through the GSSR register for the specified
2479 * function (CSR, PHY0, PHY1, EEPROM, Flash)
2481 s32 ixgbe_acquire_swfw_sync(struct ixgbe_hw *hw, u16 mask)
2485 u32 fwmask = mask << 5;
2490 * SW EEPROM semaphore bit is used for access to all
2491 * SW_FW_SYNC/GSSR bits (not just EEPROM)
2493 if (ixgbe_get_eeprom_semaphore(hw))
2494 return IXGBE_ERR_SWFW_SYNC;
2496 gssr = IXGBE_READ_REG(hw, IXGBE_GSSR);
2497 if (!(gssr & (fwmask | swmask)))
2501 * Firmware currently using resource (fwmask) or other software
2502 * thread currently using resource (swmask)
2504 ixgbe_release_eeprom_semaphore(hw);
2505 usleep_range(5000, 10000);
2510 hw_dbg(hw, "Driver can't access resource, SW_FW_SYNC timeout.\n");
2511 return IXGBE_ERR_SWFW_SYNC;
2515 IXGBE_WRITE_REG(hw, IXGBE_GSSR, gssr);
2517 ixgbe_release_eeprom_semaphore(hw);
2522 * ixgbe_release_swfw_sync - Release SWFW semaphore
2523 * @hw: pointer to hardware structure
2524 * @mask: Mask to specify which semaphore to release
2526 * Releases the SWFW semaphore through the GSSR register for the specified
2527 * function (CSR, PHY0, PHY1, EEPROM, Flash)
2529 void ixgbe_release_swfw_sync(struct ixgbe_hw *hw, u16 mask)
2534 ixgbe_get_eeprom_semaphore(hw);
2536 gssr = IXGBE_READ_REG(hw, IXGBE_GSSR);
2538 IXGBE_WRITE_REG(hw, IXGBE_GSSR, gssr);
2540 ixgbe_release_eeprom_semaphore(hw);
2544 * ixgbe_disable_rx_buff_generic - Stops the receive data path
2545 * @hw: pointer to hardware structure
2547 * Stops the receive data path and waits for the HW to internally
2548 * empty the Rx security block.
2550 s32 ixgbe_disable_rx_buff_generic(struct ixgbe_hw *hw)
2552 #define IXGBE_MAX_SECRX_POLL 40
2556 secrxreg = IXGBE_READ_REG(hw, IXGBE_SECRXCTRL);
2557 secrxreg |= IXGBE_SECRXCTRL_RX_DIS;
2558 IXGBE_WRITE_REG(hw, IXGBE_SECRXCTRL, secrxreg);
2559 for (i = 0; i < IXGBE_MAX_SECRX_POLL; i++) {
2560 secrxreg = IXGBE_READ_REG(hw, IXGBE_SECRXSTAT);
2561 if (secrxreg & IXGBE_SECRXSTAT_SECRX_RDY)
2564 /* Use interrupt-safe sleep just in case */
2568 /* For informational purposes only */
2569 if (i >= IXGBE_MAX_SECRX_POLL)
2570 hw_dbg(hw, "Rx unit being enabled before security "
2571 "path fully disabled. Continuing with init.\n");
2578 * ixgbe_enable_rx_buff - Enables the receive data path
2579 * @hw: pointer to hardware structure
2581 * Enables the receive data path
2583 s32 ixgbe_enable_rx_buff_generic(struct ixgbe_hw *hw)
2587 secrxreg = IXGBE_READ_REG(hw, IXGBE_SECRXCTRL);
2588 secrxreg &= ~IXGBE_SECRXCTRL_RX_DIS;
2589 IXGBE_WRITE_REG(hw, IXGBE_SECRXCTRL, secrxreg);
2590 IXGBE_WRITE_FLUSH(hw);
2596 * ixgbe_enable_rx_dma_generic - Enable the Rx DMA unit
2597 * @hw: pointer to hardware structure
2598 * @regval: register value to write to RXCTRL
2600 * Enables the Rx DMA unit
2602 s32 ixgbe_enable_rx_dma_generic(struct ixgbe_hw *hw, u32 regval)
2604 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, regval);
2610 * ixgbe_blink_led_start_generic - Blink LED based on index.
2611 * @hw: pointer to hardware structure
2612 * @index: led number to blink
2614 s32 ixgbe_blink_led_start_generic(struct ixgbe_hw *hw, u32 index)
2616 ixgbe_link_speed speed = 0;
2617 bool link_up = false;
2618 u32 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
2619 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
2622 * Link must be up to auto-blink the LEDs;
2623 * Force it if link is down.
2625 hw->mac.ops.check_link(hw, &speed, &link_up, false);
2628 autoc_reg |= IXGBE_AUTOC_AN_RESTART;
2629 autoc_reg |= IXGBE_AUTOC_FLU;
2630 IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc_reg);
2631 IXGBE_WRITE_FLUSH(hw);
2632 usleep_range(10000, 20000);
2635 led_reg &= ~IXGBE_LED_MODE_MASK(index);
2636 led_reg |= IXGBE_LED_BLINK(index);
2637 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
2638 IXGBE_WRITE_FLUSH(hw);
2644 * ixgbe_blink_led_stop_generic - Stop blinking LED based on index.
2645 * @hw: pointer to hardware structure
2646 * @index: led number to stop blinking
2648 s32 ixgbe_blink_led_stop_generic(struct ixgbe_hw *hw, u32 index)
2650 u32 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
2651 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
2653 autoc_reg &= ~IXGBE_AUTOC_FLU;
2654 autoc_reg |= IXGBE_AUTOC_AN_RESTART;
2655 IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc_reg);
2657 led_reg &= ~IXGBE_LED_MODE_MASK(index);
2658 led_reg &= ~IXGBE_LED_BLINK(index);
2659 led_reg |= IXGBE_LED_LINK_ACTIVE << IXGBE_LED_MODE_SHIFT(index);
2660 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
2661 IXGBE_WRITE_FLUSH(hw);
2667 * ixgbe_get_san_mac_addr_offset - Get SAN MAC address offset from the EEPROM
2668 * @hw: pointer to hardware structure
2669 * @san_mac_offset: SAN MAC address offset
2671 * This function will read the EEPROM location for the SAN MAC address
2672 * pointer, and returns the value at that location. This is used in both
2673 * get and set mac_addr routines.
2675 static s32 ixgbe_get_san_mac_addr_offset(struct ixgbe_hw *hw,
2676 u16 *san_mac_offset)
2679 * First read the EEPROM pointer to see if the MAC addresses are
2682 hw->eeprom.ops.read(hw, IXGBE_SAN_MAC_ADDR_PTR, san_mac_offset);
2688 * ixgbe_get_san_mac_addr_generic - SAN MAC address retrieval from the EEPROM
2689 * @hw: pointer to hardware structure
2690 * @san_mac_addr: SAN MAC address
2692 * Reads the SAN MAC address from the EEPROM, if it's available. This is
2693 * per-port, so set_lan_id() must be called before reading the addresses.
2694 * set_lan_id() is called by identify_sfp(), but this cannot be relied
2695 * upon for non-SFP connections, so we must call it here.
2697 s32 ixgbe_get_san_mac_addr_generic(struct ixgbe_hw *hw, u8 *san_mac_addr)
2699 u16 san_mac_data, san_mac_offset;
2703 * First read the EEPROM pointer to see if the MAC addresses are
2704 * available. If they're not, no point in calling set_lan_id() here.
2706 ixgbe_get_san_mac_addr_offset(hw, &san_mac_offset);
2708 if ((san_mac_offset == 0) || (san_mac_offset == 0xFFFF)) {
2710 * No addresses available in this EEPROM. It's not an
2711 * error though, so just wipe the local address and return.
2713 for (i = 0; i < 6; i++)
2714 san_mac_addr[i] = 0xFF;
2716 goto san_mac_addr_out;
2719 /* make sure we know which port we need to program */
2720 hw->mac.ops.set_lan_id(hw);
2721 /* apply the port offset to the address offset */
2722 (hw->bus.func) ? (san_mac_offset += IXGBE_SAN_MAC_ADDR_PORT1_OFFSET) :
2723 (san_mac_offset += IXGBE_SAN_MAC_ADDR_PORT0_OFFSET);
2724 for (i = 0; i < 3; i++) {
2725 hw->eeprom.ops.read(hw, san_mac_offset, &san_mac_data);
2726 san_mac_addr[i * 2] = (u8)(san_mac_data);
2727 san_mac_addr[i * 2 + 1] = (u8)(san_mac_data >> 8);
2736 * ixgbe_get_pcie_msix_count_generic - Gets MSI-X vector count
2737 * @hw: pointer to hardware structure
2739 * Read PCIe configuration space, and get the MSI-X vector count from
2740 * the capabilities table.
2742 u16 ixgbe_get_pcie_msix_count_generic(struct ixgbe_hw *hw)
2744 struct ixgbe_adapter *adapter = hw->back;
2749 switch (hw->mac.type) {
2750 case ixgbe_mac_82598EB:
2751 pcie_offset = IXGBE_PCIE_MSIX_82598_CAPS;
2752 max_msix_count = IXGBE_MAX_MSIX_VECTORS_82598;
2754 case ixgbe_mac_82599EB:
2755 case ixgbe_mac_X540:
2756 pcie_offset = IXGBE_PCIE_MSIX_82599_CAPS;
2757 max_msix_count = IXGBE_MAX_MSIX_VECTORS_82599;
2763 pci_read_config_word(adapter->pdev, pcie_offset, &msix_count);
2764 msix_count &= IXGBE_PCIE_MSIX_TBL_SZ_MASK;
2766 /* MSI-X count is zero-based in HW */
2769 if (msix_count > max_msix_count)
2770 msix_count = max_msix_count;
2776 * ixgbe_clear_vmdq_generic - Disassociate a VMDq pool index from a rx address
2777 * @hw: pointer to hardware struct
2778 * @rar: receive address register index to disassociate
2779 * @vmdq: VMDq pool index to remove from the rar
2781 s32 ixgbe_clear_vmdq_generic(struct ixgbe_hw *hw, u32 rar, u32 vmdq)
2783 u32 mpsar_lo, mpsar_hi;
2784 u32 rar_entries = hw->mac.num_rar_entries;
2786 /* Make sure we are using a valid rar index range */
2787 if (rar >= rar_entries) {
2788 hw_dbg(hw, "RAR index %d is out of range.\n", rar);
2789 return IXGBE_ERR_INVALID_ARGUMENT;
2792 mpsar_lo = IXGBE_READ_REG(hw, IXGBE_MPSAR_LO(rar));
2793 mpsar_hi = IXGBE_READ_REG(hw, IXGBE_MPSAR_HI(rar));
2795 if (!mpsar_lo && !mpsar_hi)
2798 if (vmdq == IXGBE_CLEAR_VMDQ_ALL) {
2800 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), 0);
2804 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), 0);
2807 } else if (vmdq < 32) {
2808 mpsar_lo &= ~(1 << vmdq);
2809 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), mpsar_lo);
2811 mpsar_hi &= ~(1 << (vmdq - 32));
2812 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), mpsar_hi);
2815 /* was that the last pool using this rar? */
2816 if (mpsar_lo == 0 && mpsar_hi == 0 && rar != 0)
2817 hw->mac.ops.clear_rar(hw, rar);
2823 * ixgbe_set_vmdq_generic - Associate a VMDq pool index with a rx address
2824 * @hw: pointer to hardware struct
2825 * @rar: receive address register index to associate with a VMDq index
2826 * @vmdq: VMDq pool index
2828 s32 ixgbe_set_vmdq_generic(struct ixgbe_hw *hw, u32 rar, u32 vmdq)
2831 u32 rar_entries = hw->mac.num_rar_entries;
2833 /* Make sure we are using a valid rar index range */
2834 if (rar >= rar_entries) {
2835 hw_dbg(hw, "RAR index %d is out of range.\n", rar);
2836 return IXGBE_ERR_INVALID_ARGUMENT;
2840 mpsar = IXGBE_READ_REG(hw, IXGBE_MPSAR_LO(rar));
2842 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), mpsar);
2844 mpsar = IXGBE_READ_REG(hw, IXGBE_MPSAR_HI(rar));
2845 mpsar |= 1 << (vmdq - 32);
2846 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), mpsar);
2852 * This function should only be involved in the IOV mode.
2853 * In IOV mode, Default pool is next pool after the number of
2854 * VFs advertized and not 0.
2855 * MPSAR table needs to be updated for SAN_MAC RAR [hw->mac.san_mac_rar_index]
2857 * ixgbe_set_vmdq_san_mac - Associate default VMDq pool index with a rx address
2858 * @hw: pointer to hardware struct
2859 * @vmdq: VMDq pool index
2861 s32 ixgbe_set_vmdq_san_mac_generic(struct ixgbe_hw *hw, u32 vmdq)
2863 u32 rar = hw->mac.san_mac_rar_index;
2866 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), 1 << vmdq);
2867 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), 0);
2869 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), 0);
2870 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), 1 << (vmdq - 32));
2877 * ixgbe_init_uta_tables_generic - Initialize the Unicast Table Array
2878 * @hw: pointer to hardware structure
2880 s32 ixgbe_init_uta_tables_generic(struct ixgbe_hw *hw)
2884 for (i = 0; i < 128; i++)
2885 IXGBE_WRITE_REG(hw, IXGBE_UTA(i), 0);
2891 * ixgbe_find_vlvf_slot - find the vlanid or the first empty slot
2892 * @hw: pointer to hardware structure
2893 * @vlan: VLAN id to write to VLAN filter
2895 * return the VLVF index where this VLAN id should be placed
2898 static s32 ixgbe_find_vlvf_slot(struct ixgbe_hw *hw, u32 vlan)
2901 u32 first_empty_slot = 0;
2904 /* short cut the special case */
2909 * Search for the vlan id in the VLVF entries. Save off the first empty
2910 * slot found along the way
2912 for (regindex = 1; regindex < IXGBE_VLVF_ENTRIES; regindex++) {
2913 bits = IXGBE_READ_REG(hw, IXGBE_VLVF(regindex));
2914 if (!bits && !(first_empty_slot))
2915 first_empty_slot = regindex;
2916 else if ((bits & 0x0FFF) == vlan)
2921 * If regindex is less than IXGBE_VLVF_ENTRIES, then we found the vlan
2922 * in the VLVF. Else use the first empty VLVF register for this
2925 if (regindex >= IXGBE_VLVF_ENTRIES) {
2926 if (first_empty_slot)
2927 regindex = first_empty_slot;
2929 hw_dbg(hw, "No space in VLVF.\n");
2930 regindex = IXGBE_ERR_NO_SPACE;
2938 * ixgbe_set_vfta_generic - Set VLAN filter table
2939 * @hw: pointer to hardware structure
2940 * @vlan: VLAN id to write to VLAN filter
2941 * @vind: VMDq output index that maps queue to VLAN id in VFVFB
2942 * @vlan_on: boolean flag to turn on/off VLAN in VFVF
2944 * Turn on/off specified VLAN in the VLAN filter table.
2946 s32 ixgbe_set_vfta_generic(struct ixgbe_hw *hw, u32 vlan, u32 vind,
2955 bool vfta_changed = false;
2958 return IXGBE_ERR_PARAM;
2961 * this is a 2 part operation - first the VFTA, then the
2962 * VLVF and VLVFB if VT Mode is set
2963 * We don't write the VFTA until we know the VLVF part succeeded.
2967 * The VFTA is a bitstring made up of 128 32-bit registers
2968 * that enable the particular VLAN id, much like the MTA:
2969 * bits[11-5]: which register
2970 * bits[4-0]: which bit in the register
2972 regindex = (vlan >> 5) & 0x7F;
2973 bitindex = vlan & 0x1F;
2974 targetbit = (1 << bitindex);
2975 vfta = IXGBE_READ_REG(hw, IXGBE_VFTA(regindex));
2978 if (!(vfta & targetbit)) {
2980 vfta_changed = true;
2983 if ((vfta & targetbit)) {
2985 vfta_changed = true;
2992 * make sure the vlan is in VLVF
2993 * set the vind bit in the matching VLVFB
2995 * clear the pool bit and possibly the vind
2997 vt = IXGBE_READ_REG(hw, IXGBE_VT_CTL);
2998 if (vt & IXGBE_VT_CTL_VT_ENABLE) {
3001 vlvf_index = ixgbe_find_vlvf_slot(hw, vlan);
3006 /* set the pool bit */
3008 bits = IXGBE_READ_REG(hw,
3009 IXGBE_VLVFB(vlvf_index*2));
3010 bits |= (1 << vind);
3012 IXGBE_VLVFB(vlvf_index*2),
3015 bits = IXGBE_READ_REG(hw,
3016 IXGBE_VLVFB((vlvf_index*2)+1));
3017 bits |= (1 << (vind-32));
3019 IXGBE_VLVFB((vlvf_index*2)+1),
3023 /* clear the pool bit */
3025 bits = IXGBE_READ_REG(hw,
3026 IXGBE_VLVFB(vlvf_index*2));
3027 bits &= ~(1 << vind);
3029 IXGBE_VLVFB(vlvf_index*2),
3031 bits |= IXGBE_READ_REG(hw,
3032 IXGBE_VLVFB((vlvf_index*2)+1));
3034 bits = IXGBE_READ_REG(hw,
3035 IXGBE_VLVFB((vlvf_index*2)+1));
3036 bits &= ~(1 << (vind-32));
3038 IXGBE_VLVFB((vlvf_index*2)+1),
3040 bits |= IXGBE_READ_REG(hw,
3041 IXGBE_VLVFB(vlvf_index*2));
3046 * If there are still bits set in the VLVFB registers
3047 * for the VLAN ID indicated we need to see if the
3048 * caller is requesting that we clear the VFTA entry bit.
3049 * If the caller has requested that we clear the VFTA
3050 * entry bit but there are still pools/VFs using this VLAN
3051 * ID entry then ignore the request. We're not worried
3052 * about the case where we're turning the VFTA VLAN ID
3053 * entry bit on, only when requested to turn it off as
3054 * there may be multiple pools and/or VFs using the
3055 * VLAN ID entry. In that case we cannot clear the
3056 * VFTA bit until all pools/VFs using that VLAN ID have also
3057 * been cleared. This will be indicated by "bits" being
3061 IXGBE_WRITE_REG(hw, IXGBE_VLVF(vlvf_index),
3062 (IXGBE_VLVF_VIEN | vlan));
3064 /* someone wants to clear the vfta entry
3065 * but some pools/VFs are still using it.
3067 vfta_changed = false;
3071 IXGBE_WRITE_REG(hw, IXGBE_VLVF(vlvf_index), 0);
3075 IXGBE_WRITE_REG(hw, IXGBE_VFTA(regindex), vfta);
3081 * ixgbe_clear_vfta_generic - Clear VLAN filter table
3082 * @hw: pointer to hardware structure
3084 * Clears the VLAN filer table, and the VMDq index associated with the filter
3086 s32 ixgbe_clear_vfta_generic(struct ixgbe_hw *hw)
3090 for (offset = 0; offset < hw->mac.vft_size; offset++)
3091 IXGBE_WRITE_REG(hw, IXGBE_VFTA(offset), 0);
3093 for (offset = 0; offset < IXGBE_VLVF_ENTRIES; offset++) {
3094 IXGBE_WRITE_REG(hw, IXGBE_VLVF(offset), 0);
3095 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(offset*2), 0);
3096 IXGBE_WRITE_REG(hw, IXGBE_VLVFB((offset*2)+1), 0);
3103 * ixgbe_check_mac_link_generic - Determine link and speed status
3104 * @hw: pointer to hardware structure
3105 * @speed: pointer to link speed
3106 * @link_up: true when link is up
3107 * @link_up_wait_to_complete: bool used to wait for link up or not
3109 * Reads the links register to determine if link is up and the current speed
3111 s32 ixgbe_check_mac_link_generic(struct ixgbe_hw *hw, ixgbe_link_speed *speed,
3112 bool *link_up, bool link_up_wait_to_complete)
3114 u32 links_reg, links_orig;
3117 /* clear the old state */
3118 links_orig = IXGBE_READ_REG(hw, IXGBE_LINKS);
3120 links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
3122 if (links_orig != links_reg) {
3123 hw_dbg(hw, "LINKS changed from %08X to %08X\n",
3124 links_orig, links_reg);
3127 if (link_up_wait_to_complete) {
3128 for (i = 0; i < IXGBE_LINK_UP_TIME; i++) {
3129 if (links_reg & IXGBE_LINKS_UP) {
3136 links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
3139 if (links_reg & IXGBE_LINKS_UP)
3145 if ((links_reg & IXGBE_LINKS_SPEED_82599) ==
3146 IXGBE_LINKS_SPEED_10G_82599)
3147 *speed = IXGBE_LINK_SPEED_10GB_FULL;
3148 else if ((links_reg & IXGBE_LINKS_SPEED_82599) ==
3149 IXGBE_LINKS_SPEED_1G_82599)
3150 *speed = IXGBE_LINK_SPEED_1GB_FULL;
3151 else if ((links_reg & IXGBE_LINKS_SPEED_82599) ==
3152 IXGBE_LINKS_SPEED_100_82599)
3153 *speed = IXGBE_LINK_SPEED_100_FULL;
3155 *speed = IXGBE_LINK_SPEED_UNKNOWN;
3161 * ixgbe_get_wwn_prefix_generic - Get alternative WWNN/WWPN prefix from
3163 * @hw: pointer to hardware structure
3164 * @wwnn_prefix: the alternative WWNN prefix
3165 * @wwpn_prefix: the alternative WWPN prefix
3167 * This function will read the EEPROM from the alternative SAN MAC address
3168 * block to check the support for the alternative WWNN/WWPN prefix support.
3170 s32 ixgbe_get_wwn_prefix_generic(struct ixgbe_hw *hw, u16 *wwnn_prefix,
3174 u16 alt_san_mac_blk_offset;
3176 /* clear output first */
3177 *wwnn_prefix = 0xFFFF;
3178 *wwpn_prefix = 0xFFFF;
3180 /* check if alternative SAN MAC is supported */
3181 hw->eeprom.ops.read(hw, IXGBE_ALT_SAN_MAC_ADDR_BLK_PTR,
3182 &alt_san_mac_blk_offset);
3184 if ((alt_san_mac_blk_offset == 0) ||
3185 (alt_san_mac_blk_offset == 0xFFFF))
3186 goto wwn_prefix_out;
3188 /* check capability in alternative san mac address block */
3189 offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_CAPS_OFFSET;
3190 hw->eeprom.ops.read(hw, offset, &caps);
3191 if (!(caps & IXGBE_ALT_SAN_MAC_ADDR_CAPS_ALTWWN))
3192 goto wwn_prefix_out;
3194 /* get the corresponding prefix for WWNN/WWPN */
3195 offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_WWNN_OFFSET;
3196 hw->eeprom.ops.read(hw, offset, wwnn_prefix);
3198 offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_WWPN_OFFSET;
3199 hw->eeprom.ops.read(hw, offset, wwpn_prefix);
3206 * ixgbe_set_mac_anti_spoofing - Enable/Disable MAC anti-spoofing
3207 * @hw: pointer to hardware structure
3208 * @enable: enable or disable switch for anti-spoofing
3209 * @pf: Physical Function pool - do not enable anti-spoofing for the PF
3212 void ixgbe_set_mac_anti_spoofing(struct ixgbe_hw *hw, bool enable, int pf)
3215 int pf_target_reg = pf >> 3;
3216 int pf_target_shift = pf % 8;
3219 if (hw->mac.type == ixgbe_mac_82598EB)
3223 pfvfspoof = IXGBE_SPOOF_MACAS_MASK;
3226 * PFVFSPOOF register array is size 8 with 8 bits assigned to
3227 * MAC anti-spoof enables in each register array element.
3229 for (j = 0; j < pf_target_reg; j++)
3230 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(j), pfvfspoof);
3233 * The PF should be allowed to spoof so that it can support
3234 * emulation mode NICs. Do not set the bits assigned to the PF
3236 pfvfspoof &= (1 << pf_target_shift) - 1;
3237 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(j), pfvfspoof);
3240 * Remaining pools belong to the PF so they do not need to have
3241 * anti-spoofing enabled.
3243 for (j++; j < IXGBE_PFVFSPOOF_REG_COUNT; j++)
3244 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(j), 0);
3248 * ixgbe_set_vlan_anti_spoofing - Enable/Disable VLAN anti-spoofing
3249 * @hw: pointer to hardware structure
3250 * @enable: enable or disable switch for VLAN anti-spoofing
3251 * @pf: Virtual Function pool - VF Pool to set for VLAN anti-spoofing
3254 void ixgbe_set_vlan_anti_spoofing(struct ixgbe_hw *hw, bool enable, int vf)
3256 int vf_target_reg = vf >> 3;
3257 int vf_target_shift = vf % 8 + IXGBE_SPOOF_VLANAS_SHIFT;
3260 if (hw->mac.type == ixgbe_mac_82598EB)
3263 pfvfspoof = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg));
3265 pfvfspoof |= (1 << vf_target_shift);
3267 pfvfspoof &= ~(1 << vf_target_shift);
3268 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), pfvfspoof);
3272 * ixgbe_get_device_caps_generic - Get additional device capabilities
3273 * @hw: pointer to hardware structure
3274 * @device_caps: the EEPROM word with the extra device capabilities
3276 * This function will read the EEPROM location for the device capabilities,
3277 * and return the word through device_caps.
3279 s32 ixgbe_get_device_caps_generic(struct ixgbe_hw *hw, u16 *device_caps)
3281 hw->eeprom.ops.read(hw, IXGBE_DEVICE_CAPS, device_caps);
3287 * ixgbe_set_rxpba_generic - Initialize RX packet buffer
3288 * @hw: pointer to hardware structure
3289 * @num_pb: number of packet buffers to allocate
3290 * @headroom: reserve n KB of headroom
3291 * @strategy: packet buffer allocation strategy
3293 void ixgbe_set_rxpba_generic(struct ixgbe_hw *hw,
3298 u32 pbsize = hw->mac.rx_pb_size;
3300 u32 rxpktsize, txpktsize, txpbthresh;
3302 /* Reserve headroom */
3308 /* Divide remaining packet buffer space amongst the number
3309 * of packet buffers requested using supplied strategy.
3312 case (PBA_STRATEGY_WEIGHTED):
3313 /* pba_80_48 strategy weight first half of packet buffer with
3314 * 5/8 of the packet buffer space.
3316 rxpktsize = ((pbsize * 5 * 2) / (num_pb * 8));
3317 pbsize -= rxpktsize * (num_pb / 2);
3318 rxpktsize <<= IXGBE_RXPBSIZE_SHIFT;
3319 for (; i < (num_pb / 2); i++)
3320 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpktsize);
3321 /* Fall through to configure remaining packet buffers */
3322 case (PBA_STRATEGY_EQUAL):
3323 /* Divide the remaining Rx packet buffer evenly among the TCs */
3324 rxpktsize = (pbsize / (num_pb - i)) << IXGBE_RXPBSIZE_SHIFT;
3325 for (; i < num_pb; i++)
3326 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpktsize);
3333 * Setup Tx packet buffer and threshold equally for all TCs
3334 * TXPBTHRESH register is set in K so divide by 1024 and subtract
3335 * 10 since the largest packet we support is just over 9K.
3337 txpktsize = IXGBE_TXPBSIZE_MAX / num_pb;
3338 txpbthresh = (txpktsize / 1024) - IXGBE_TXPKT_SIZE_MAX;
3339 for (i = 0; i < num_pb; i++) {
3340 IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), txpktsize);
3341 IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), txpbthresh);
3344 /* Clear unused TCs, if any, to zero buffer size*/
3345 for (; i < IXGBE_MAX_PB; i++) {
3346 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), 0);
3347 IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), 0);
3348 IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), 0);
3353 * ixgbe_calculate_checksum - Calculate checksum for buffer
3354 * @buffer: pointer to EEPROM
3355 * @length: size of EEPROM to calculate a checksum for
3357 * Calculates the checksum for some buffer on a specified length. The
3358 * checksum calculated is returned.
3360 static u8 ixgbe_calculate_checksum(u8 *buffer, u32 length)
3368 for (i = 0; i < length; i++)
3371 return (u8) (0 - sum);
3375 * ixgbe_host_interface_command - Issue command to manageability block
3376 * @hw: pointer to the HW structure
3377 * @buffer: contains the command to write and where the return status will
3379 * @length: length of buffer, must be multiple of 4 bytes
3381 * Communicates with the manageability block. On success return 0
3382 * else return IXGBE_ERR_HOST_INTERFACE_COMMAND.
3384 static s32 ixgbe_host_interface_command(struct ixgbe_hw *hw, u32 *buffer,
3388 u32 hdr_size = sizeof(struct ixgbe_hic_hdr);
3389 u8 buf_len, dword_len;
3393 if (length == 0 || length & 0x3 ||
3394 length > IXGBE_HI_MAX_BLOCK_BYTE_LENGTH) {
3395 hw_dbg(hw, "Buffer length failure.\n");
3396 ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND;
3400 /* Check that the host interface is enabled. */
3401 hicr = IXGBE_READ_REG(hw, IXGBE_HICR);
3402 if ((hicr & IXGBE_HICR_EN) == 0) {
3403 hw_dbg(hw, "IXGBE_HOST_EN bit disabled.\n");
3404 ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND;
3408 /* Calculate length in DWORDs */
3409 dword_len = length >> 2;
3412 * The device driver writes the relevant command block
3413 * into the ram area.
3415 for (i = 0; i < dword_len; i++)
3416 IXGBE_WRITE_REG_ARRAY(hw, IXGBE_FLEX_MNG,
3417 i, cpu_to_le32(buffer[i]));
3419 /* Setting this bit tells the ARC that a new command is pending. */
3420 IXGBE_WRITE_REG(hw, IXGBE_HICR, hicr | IXGBE_HICR_C);
3422 for (i = 0; i < IXGBE_HI_COMMAND_TIMEOUT; i++) {
3423 hicr = IXGBE_READ_REG(hw, IXGBE_HICR);
3424 if (!(hicr & IXGBE_HICR_C))
3426 usleep_range(1000, 2000);
3429 /* Check command successful completion. */
3430 if (i == IXGBE_HI_COMMAND_TIMEOUT ||
3431 (!(IXGBE_READ_REG(hw, IXGBE_HICR) & IXGBE_HICR_SV))) {
3432 hw_dbg(hw, "Command has failed with no status valid.\n");
3433 ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND;
3437 /* Calculate length in DWORDs */
3438 dword_len = hdr_size >> 2;
3440 /* first pull in the header so we know the buffer length */
3441 for (bi = 0; bi < dword_len; bi++) {
3442 buffer[bi] = IXGBE_READ_REG_ARRAY(hw, IXGBE_FLEX_MNG, bi);
3443 le32_to_cpus(&buffer[bi]);
3446 /* If there is any thing in data position pull it in */
3447 buf_len = ((struct ixgbe_hic_hdr *)buffer)->buf_len;
3451 if (length < (buf_len + hdr_size)) {
3452 hw_dbg(hw, "Buffer not large enough for reply message.\n");
3453 ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND;
3457 /* Calculate length in DWORDs, add 3 for odd lengths */
3458 dword_len = (buf_len + 3) >> 2;
3460 /* Pull in the rest of the buffer (bi is where we left off)*/
3461 for (; bi <= dword_len; bi++) {
3462 buffer[bi] = IXGBE_READ_REG_ARRAY(hw, IXGBE_FLEX_MNG, bi);
3463 le32_to_cpus(&buffer[bi]);
3471 * ixgbe_set_fw_drv_ver_generic - Sends driver version to firmware
3472 * @hw: pointer to the HW structure
3473 * @maj: driver version major number
3474 * @min: driver version minor number
3475 * @build: driver version build number
3476 * @sub: driver version sub build number
3478 * Sends driver version number to firmware through the manageability
3479 * block. On success return 0
3480 * else returns IXGBE_ERR_SWFW_SYNC when encountering an error acquiring
3481 * semaphore or IXGBE_ERR_HOST_INTERFACE_COMMAND when command fails.
3483 s32 ixgbe_set_fw_drv_ver_generic(struct ixgbe_hw *hw, u8 maj, u8 min,
3486 struct ixgbe_hic_drv_info fw_cmd;
3490 if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_SW_MNG_SM) != 0) {
3491 ret_val = IXGBE_ERR_SWFW_SYNC;
3495 fw_cmd.hdr.cmd = FW_CEM_CMD_DRIVER_INFO;
3496 fw_cmd.hdr.buf_len = FW_CEM_CMD_DRIVER_INFO_LEN;
3497 fw_cmd.hdr.cmd_or_resp.cmd_resv = FW_CEM_CMD_RESERVED;
3498 fw_cmd.port_num = (u8)hw->bus.func;
3499 fw_cmd.ver_maj = maj;
3500 fw_cmd.ver_min = min;
3501 fw_cmd.ver_build = build;
3502 fw_cmd.ver_sub = sub;
3503 fw_cmd.hdr.checksum = 0;
3504 fw_cmd.hdr.checksum = ixgbe_calculate_checksum((u8 *)&fw_cmd,
3505 (FW_CEM_HDR_LEN + fw_cmd.hdr.buf_len));
3509 for (i = 0; i <= FW_CEM_MAX_RETRIES; i++) {
3510 ret_val = ixgbe_host_interface_command(hw, (u32 *)&fw_cmd,
3515 if (fw_cmd.hdr.cmd_or_resp.ret_status ==
3516 FW_CEM_RESP_STATUS_SUCCESS)
3519 ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND;
3524 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_SW_MNG_SM);
3530 * ixgbe_clear_tx_pending - Clear pending TX work from the PCIe fifo
3531 * @hw: pointer to the hardware structure
3533 * The 82599 and x540 MACs can experience issues if TX work is still pending
3534 * when a reset occurs. This function prevents this by flushing the PCIe
3535 * buffers on the system.
3537 void ixgbe_clear_tx_pending(struct ixgbe_hw *hw)
3539 u32 gcr_ext, hlreg0;
3542 * If double reset is not requested then all transactions should
3543 * already be clear and as such there is no work to do
3545 if (!(hw->mac.flags & IXGBE_FLAGS_DOUBLE_RESET_REQUIRED))
3549 * Set loopback enable to prevent any transmits from being sent
3550 * should the link come up. This assumes that the RXCTRL.RXEN bit
3551 * has already been cleared.
3553 hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0);
3554 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0 | IXGBE_HLREG0_LPBK);
3556 /* initiate cleaning flow for buffers in the PCIe transaction layer */
3557 gcr_ext = IXGBE_READ_REG(hw, IXGBE_GCR_EXT);
3558 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT,
3559 gcr_ext | IXGBE_GCR_EXT_BUFFERS_CLEAR);
3561 /* Flush all writes and allow 20usec for all transactions to clear */
3562 IXGBE_WRITE_FLUSH(hw);
3565 /* restore previous register values */
3566 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, gcr_ext);
3567 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0);
3570 static const u8 ixgbe_emc_temp_data[4] = {
3571 IXGBE_EMC_INTERNAL_DATA,
3572 IXGBE_EMC_DIODE1_DATA,
3573 IXGBE_EMC_DIODE2_DATA,
3574 IXGBE_EMC_DIODE3_DATA
3576 static const u8 ixgbe_emc_therm_limit[4] = {
3577 IXGBE_EMC_INTERNAL_THERM_LIMIT,
3578 IXGBE_EMC_DIODE1_THERM_LIMIT,
3579 IXGBE_EMC_DIODE2_THERM_LIMIT,
3580 IXGBE_EMC_DIODE3_THERM_LIMIT
3584 * ixgbe_get_ets_data - Extracts the ETS bit data
3585 * @hw: pointer to hardware structure
3586 * @ets_cfg: extected ETS data
3587 * @ets_offset: offset of ETS data
3589 * Returns error code.
3591 static s32 ixgbe_get_ets_data(struct ixgbe_hw *hw, u16 *ets_cfg,
3596 status = hw->eeprom.ops.read(hw, IXGBE_ETS_CFG, ets_offset);
3600 if ((*ets_offset == 0x0000) || (*ets_offset == 0xFFFF)) {
3601 status = IXGBE_NOT_IMPLEMENTED;
3605 status = hw->eeprom.ops.read(hw, *ets_offset, ets_cfg);
3609 if ((*ets_cfg & IXGBE_ETS_TYPE_MASK) != IXGBE_ETS_TYPE_EMC_SHIFTED) {
3610 status = IXGBE_NOT_IMPLEMENTED;
3619 * ixgbe_get_thermal_sensor_data - Gathers thermal sensor data
3620 * @hw: pointer to hardware structure
3622 * Returns the thermal sensor data structure
3624 s32 ixgbe_get_thermal_sensor_data_generic(struct ixgbe_hw *hw)
3632 struct ixgbe_thermal_sensor_data *data = &hw->mac.thermal_sensor_data;
3634 /* Only support thermal sensors attached to physical port 0 */
3635 if ((IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1)) {
3636 status = IXGBE_NOT_IMPLEMENTED;
3640 status = ixgbe_get_ets_data(hw, &ets_cfg, &ets_offset);
3644 num_sensors = (ets_cfg & IXGBE_ETS_NUM_SENSORS_MASK);
3645 if (num_sensors > IXGBE_MAX_SENSORS)
3646 num_sensors = IXGBE_MAX_SENSORS;
3648 for (i = 0; i < num_sensors; i++) {
3652 status = hw->eeprom.ops.read(hw, (ets_offset + 1 + i),
3657 sensor_index = ((ets_sensor & IXGBE_ETS_DATA_INDEX_MASK) >>
3658 IXGBE_ETS_DATA_INDEX_SHIFT);
3659 sensor_location = ((ets_sensor & IXGBE_ETS_DATA_LOC_MASK) >>
3660 IXGBE_ETS_DATA_LOC_SHIFT);
3662 if (sensor_location != 0) {
3663 status = hw->phy.ops.read_i2c_byte(hw,
3664 ixgbe_emc_temp_data[sensor_index],
3665 IXGBE_I2C_THERMAL_SENSOR_ADDR,
3666 &data->sensor[i].temp);
3676 * ixgbe_init_thermal_sensor_thresh_generic - Inits thermal sensor thresholds
3677 * @hw: pointer to hardware structure
3679 * Inits the thermal sensor thresholds according to the NVM map
3680 * and save off the threshold and location values into mac.thermal_sensor_data
3682 s32 ixgbe_init_thermal_sensor_thresh_generic(struct ixgbe_hw *hw)
3688 u8 low_thresh_delta;
3692 struct ixgbe_thermal_sensor_data *data = &hw->mac.thermal_sensor_data;
3694 memset(data, 0, sizeof(struct ixgbe_thermal_sensor_data));
3696 /* Only support thermal sensors attached to physical port 0 */
3697 if ((IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1)) {
3698 status = IXGBE_NOT_IMPLEMENTED;
3702 status = ixgbe_get_ets_data(hw, &ets_cfg, &ets_offset);
3706 low_thresh_delta = ((ets_cfg & IXGBE_ETS_LTHRES_DELTA_MASK) >>
3707 IXGBE_ETS_LTHRES_DELTA_SHIFT);
3708 num_sensors = (ets_cfg & IXGBE_ETS_NUM_SENSORS_MASK);
3709 if (num_sensors > IXGBE_MAX_SENSORS)
3710 num_sensors = IXGBE_MAX_SENSORS;
3712 for (i = 0; i < num_sensors; i++) {
3716 hw->eeprom.ops.read(hw, (ets_offset + 1 + i), &ets_sensor);
3717 sensor_index = ((ets_sensor & IXGBE_ETS_DATA_INDEX_MASK) >>
3718 IXGBE_ETS_DATA_INDEX_SHIFT);
3719 sensor_location = ((ets_sensor & IXGBE_ETS_DATA_LOC_MASK) >>
3720 IXGBE_ETS_DATA_LOC_SHIFT);
3721 therm_limit = ets_sensor & IXGBE_ETS_DATA_HTHRESH_MASK;
3723 hw->phy.ops.write_i2c_byte(hw,
3724 ixgbe_emc_therm_limit[sensor_index],
3725 IXGBE_I2C_THERMAL_SENSOR_ADDR, therm_limit);
3727 if (sensor_location == 0)
3730 data->sensor[i].location = sensor_location;
3731 data->sensor[i].caution_thresh = therm_limit;
3732 data->sensor[i].max_op_thresh = therm_limit - low_thresh_delta;