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:
74 case IXGBE_DEV_ID_82599_T3_LOM:
77 return IXGBE_ERR_FC_NOT_SUPPORTED;
82 * ixgbe_setup_fc - Set up flow control
83 * @hw: pointer to hardware structure
85 * Called at init time to set up flow control.
87 static s32 ixgbe_setup_fc(struct ixgbe_hw *hw)
90 u32 reg = 0, reg_bp = 0;
94 * Validate the requested mode. Strict IEEE mode does not allow
95 * ixgbe_fc_rx_pause because it will cause us to fail at UNH.
97 if (hw->fc.strict_ieee && hw->fc.requested_mode == ixgbe_fc_rx_pause) {
98 hw_dbg(hw, "ixgbe_fc_rx_pause not valid in strict IEEE mode\n");
99 ret_val = IXGBE_ERR_INVALID_LINK_SETTINGS;
104 * 10gig parts do not have a word in the EEPROM to determine the
105 * default flow control setting, so we explicitly set it to full.
107 if (hw->fc.requested_mode == ixgbe_fc_default)
108 hw->fc.requested_mode = ixgbe_fc_full;
111 * Set up the 1G and 10G flow control advertisement registers so the
112 * HW will be able to do fc autoneg once the cable is plugged in. If
113 * we link at 10G, the 1G advertisement is harmless and vice versa.
115 switch (hw->phy.media_type) {
116 case ixgbe_media_type_fiber:
117 case ixgbe_media_type_backplane:
118 reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANA);
119 reg_bp = IXGBE_READ_REG(hw, IXGBE_AUTOC);
121 case ixgbe_media_type_copper:
122 hw->phy.ops.read_reg(hw, MDIO_AN_ADVERTISE,
123 MDIO_MMD_AN, ®_cu);
130 * The possible values of fc.requested_mode are:
131 * 0: Flow control is completely disabled
132 * 1: Rx flow control is enabled (we can receive pause frames,
133 * but not send pause frames).
134 * 2: Tx flow control is enabled (we can send pause frames but
135 * we do not support receiving pause frames).
136 * 3: Both Rx and Tx flow control (symmetric) are enabled.
139 switch (hw->fc.requested_mode) {
141 /* Flow control completely disabled by software override. */
142 reg &= ~(IXGBE_PCS1GANA_SYM_PAUSE | IXGBE_PCS1GANA_ASM_PAUSE);
143 if (hw->phy.media_type == ixgbe_media_type_backplane)
144 reg_bp &= ~(IXGBE_AUTOC_SYM_PAUSE |
145 IXGBE_AUTOC_ASM_PAUSE);
146 else if (hw->phy.media_type == ixgbe_media_type_copper)
147 reg_cu &= ~(IXGBE_TAF_SYM_PAUSE | IXGBE_TAF_ASM_PAUSE);
149 case ixgbe_fc_tx_pause:
151 * Tx Flow control is enabled, and Rx Flow control is
152 * disabled by software override.
154 reg |= IXGBE_PCS1GANA_ASM_PAUSE;
155 reg &= ~IXGBE_PCS1GANA_SYM_PAUSE;
156 if (hw->phy.media_type == ixgbe_media_type_backplane) {
157 reg_bp |= IXGBE_AUTOC_ASM_PAUSE;
158 reg_bp &= ~IXGBE_AUTOC_SYM_PAUSE;
159 } else if (hw->phy.media_type == ixgbe_media_type_copper) {
160 reg_cu |= IXGBE_TAF_ASM_PAUSE;
161 reg_cu &= ~IXGBE_TAF_SYM_PAUSE;
164 case ixgbe_fc_rx_pause:
166 * Rx Flow control is enabled and Tx Flow control is
167 * disabled by software override. Since there really
168 * isn't a way to advertise that we are capable of RX
169 * Pause ONLY, we will advertise that we support both
170 * symmetric and asymmetric Rx PAUSE, as such we fall
171 * through to the fc_full statement. Later, we will
172 * disable the adapter's ability to send PAUSE frames.
175 /* Flow control (both Rx and Tx) is enabled by SW override. */
176 reg |= IXGBE_PCS1GANA_SYM_PAUSE | IXGBE_PCS1GANA_ASM_PAUSE;
177 if (hw->phy.media_type == ixgbe_media_type_backplane)
178 reg_bp |= IXGBE_AUTOC_SYM_PAUSE |
179 IXGBE_AUTOC_ASM_PAUSE;
180 else if (hw->phy.media_type == ixgbe_media_type_copper)
181 reg_cu |= IXGBE_TAF_SYM_PAUSE | IXGBE_TAF_ASM_PAUSE;
184 hw_dbg(hw, "Flow control param set incorrectly\n");
185 ret_val = IXGBE_ERR_CONFIG;
190 if (hw->mac.type != ixgbe_mac_X540) {
192 * Enable auto-negotiation between the MAC & PHY;
193 * the MAC will advertise clause 37 flow control.
195 IXGBE_WRITE_REG(hw, IXGBE_PCS1GANA, reg);
196 reg = IXGBE_READ_REG(hw, IXGBE_PCS1GLCTL);
198 /* Disable AN timeout */
199 if (hw->fc.strict_ieee)
200 reg &= ~IXGBE_PCS1GLCTL_AN_1G_TIMEOUT_EN;
202 IXGBE_WRITE_REG(hw, IXGBE_PCS1GLCTL, reg);
203 hw_dbg(hw, "Set up FC; PCS1GLCTL = 0x%08X\n", reg);
207 * AUTOC restart handles negotiation of 1G and 10G on backplane
208 * and copper. There is no need to set the PCS1GCTL register.
211 if (hw->phy.media_type == ixgbe_media_type_backplane) {
212 reg_bp |= IXGBE_AUTOC_AN_RESTART;
213 IXGBE_WRITE_REG(hw, IXGBE_AUTOC, reg_bp);
214 } else if ((hw->phy.media_type == ixgbe_media_type_copper) &&
215 (ixgbe_device_supports_autoneg_fc(hw) == 0)) {
216 hw->phy.ops.write_reg(hw, MDIO_AN_ADVERTISE,
217 MDIO_MMD_AN, reg_cu);
220 hw_dbg(hw, "Set up FC; IXGBE_AUTOC = 0x%08X\n", reg);
226 * ixgbe_start_hw_generic - Prepare hardware for Tx/Rx
227 * @hw: pointer to hardware structure
229 * Starts the hardware by filling the bus info structure and media type, clears
230 * all on chip counters, initializes receive address registers, multicast
231 * table, VLAN filter table, calls routine to set up link and flow control
232 * settings, and leaves transmit and receive units disabled and uninitialized
234 s32 ixgbe_start_hw_generic(struct ixgbe_hw *hw)
238 /* Set the media type */
239 hw->phy.media_type = hw->mac.ops.get_media_type(hw);
241 /* Identify the PHY */
242 hw->phy.ops.identify(hw);
244 /* Clear the VLAN filter table */
245 hw->mac.ops.clear_vfta(hw);
247 /* Clear statistics registers */
248 hw->mac.ops.clear_hw_cntrs(hw);
250 /* Set No Snoop Disable */
251 ctrl_ext = IXGBE_READ_REG(hw, IXGBE_CTRL_EXT);
252 ctrl_ext |= IXGBE_CTRL_EXT_NS_DIS;
253 IXGBE_WRITE_REG(hw, IXGBE_CTRL_EXT, ctrl_ext);
254 IXGBE_WRITE_FLUSH(hw);
256 /* Setup flow control */
259 /* Clear adapter stopped flag */
260 hw->adapter_stopped = false;
266 * ixgbe_start_hw_gen2 - Init sequence for common device family
267 * @hw: pointer to hw structure
269 * Performs the init sequence common to the second generation
271 * Devices in the second generation:
275 s32 ixgbe_start_hw_gen2(struct ixgbe_hw *hw)
280 /* Clear the rate limiters */
281 for (i = 0; i < hw->mac.max_tx_queues; i++) {
282 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, i);
283 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, 0);
285 IXGBE_WRITE_FLUSH(hw);
287 /* Disable relaxed ordering */
288 for (i = 0; i < hw->mac.max_tx_queues; i++) {
289 regval = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL_82599(i));
290 regval &= ~IXGBE_DCA_TXCTRL_DESC_WRO_EN;
291 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL_82599(i), regval);
294 for (i = 0; i < hw->mac.max_rx_queues; i++) {
295 regval = IXGBE_READ_REG(hw, IXGBE_DCA_RXCTRL(i));
296 regval &= ~(IXGBE_DCA_RXCTRL_DATA_WRO_EN |
297 IXGBE_DCA_RXCTRL_HEAD_WRO_EN);
298 IXGBE_WRITE_REG(hw, IXGBE_DCA_RXCTRL(i), regval);
305 * ixgbe_init_hw_generic - Generic hardware initialization
306 * @hw: pointer to hardware structure
308 * Initialize the hardware by resetting the hardware, filling the bus info
309 * structure and media type, clears all on chip counters, initializes receive
310 * address registers, multicast table, VLAN filter table, calls routine to set
311 * up link and flow control settings, and leaves transmit and receive units
312 * disabled and uninitialized
314 s32 ixgbe_init_hw_generic(struct ixgbe_hw *hw)
318 /* Reset the hardware */
319 status = hw->mac.ops.reset_hw(hw);
323 status = hw->mac.ops.start_hw(hw);
330 * ixgbe_clear_hw_cntrs_generic - Generic clear hardware counters
331 * @hw: pointer to hardware structure
333 * Clears all hardware statistics counters by reading them from the hardware
334 * Statistics counters are clear on read.
336 s32 ixgbe_clear_hw_cntrs_generic(struct ixgbe_hw *hw)
340 IXGBE_READ_REG(hw, IXGBE_CRCERRS);
341 IXGBE_READ_REG(hw, IXGBE_ILLERRC);
342 IXGBE_READ_REG(hw, IXGBE_ERRBC);
343 IXGBE_READ_REG(hw, IXGBE_MSPDC);
344 for (i = 0; i < 8; i++)
345 IXGBE_READ_REG(hw, IXGBE_MPC(i));
347 IXGBE_READ_REG(hw, IXGBE_MLFC);
348 IXGBE_READ_REG(hw, IXGBE_MRFC);
349 IXGBE_READ_REG(hw, IXGBE_RLEC);
350 IXGBE_READ_REG(hw, IXGBE_LXONTXC);
351 IXGBE_READ_REG(hw, IXGBE_LXOFFTXC);
352 if (hw->mac.type >= ixgbe_mac_82599EB) {
353 IXGBE_READ_REG(hw, IXGBE_LXONRXCNT);
354 IXGBE_READ_REG(hw, IXGBE_LXOFFRXCNT);
356 IXGBE_READ_REG(hw, IXGBE_LXONRXC);
357 IXGBE_READ_REG(hw, IXGBE_LXOFFRXC);
360 for (i = 0; i < 8; i++) {
361 IXGBE_READ_REG(hw, IXGBE_PXONTXC(i));
362 IXGBE_READ_REG(hw, IXGBE_PXOFFTXC(i));
363 if (hw->mac.type >= ixgbe_mac_82599EB) {
364 IXGBE_READ_REG(hw, IXGBE_PXONRXCNT(i));
365 IXGBE_READ_REG(hw, IXGBE_PXOFFRXCNT(i));
367 IXGBE_READ_REG(hw, IXGBE_PXONRXC(i));
368 IXGBE_READ_REG(hw, IXGBE_PXOFFRXC(i));
371 if (hw->mac.type >= ixgbe_mac_82599EB)
372 for (i = 0; i < 8; i++)
373 IXGBE_READ_REG(hw, IXGBE_PXON2OFFCNT(i));
374 IXGBE_READ_REG(hw, IXGBE_PRC64);
375 IXGBE_READ_REG(hw, IXGBE_PRC127);
376 IXGBE_READ_REG(hw, IXGBE_PRC255);
377 IXGBE_READ_REG(hw, IXGBE_PRC511);
378 IXGBE_READ_REG(hw, IXGBE_PRC1023);
379 IXGBE_READ_REG(hw, IXGBE_PRC1522);
380 IXGBE_READ_REG(hw, IXGBE_GPRC);
381 IXGBE_READ_REG(hw, IXGBE_BPRC);
382 IXGBE_READ_REG(hw, IXGBE_MPRC);
383 IXGBE_READ_REG(hw, IXGBE_GPTC);
384 IXGBE_READ_REG(hw, IXGBE_GORCL);
385 IXGBE_READ_REG(hw, IXGBE_GORCH);
386 IXGBE_READ_REG(hw, IXGBE_GOTCL);
387 IXGBE_READ_REG(hw, IXGBE_GOTCH);
388 if (hw->mac.type == ixgbe_mac_82598EB)
389 for (i = 0; i < 8; i++)
390 IXGBE_READ_REG(hw, IXGBE_RNBC(i));
391 IXGBE_READ_REG(hw, IXGBE_RUC);
392 IXGBE_READ_REG(hw, IXGBE_RFC);
393 IXGBE_READ_REG(hw, IXGBE_ROC);
394 IXGBE_READ_REG(hw, IXGBE_RJC);
395 IXGBE_READ_REG(hw, IXGBE_MNGPRC);
396 IXGBE_READ_REG(hw, IXGBE_MNGPDC);
397 IXGBE_READ_REG(hw, IXGBE_MNGPTC);
398 IXGBE_READ_REG(hw, IXGBE_TORL);
399 IXGBE_READ_REG(hw, IXGBE_TORH);
400 IXGBE_READ_REG(hw, IXGBE_TPR);
401 IXGBE_READ_REG(hw, IXGBE_TPT);
402 IXGBE_READ_REG(hw, IXGBE_PTC64);
403 IXGBE_READ_REG(hw, IXGBE_PTC127);
404 IXGBE_READ_REG(hw, IXGBE_PTC255);
405 IXGBE_READ_REG(hw, IXGBE_PTC511);
406 IXGBE_READ_REG(hw, IXGBE_PTC1023);
407 IXGBE_READ_REG(hw, IXGBE_PTC1522);
408 IXGBE_READ_REG(hw, IXGBE_MPTC);
409 IXGBE_READ_REG(hw, IXGBE_BPTC);
410 for (i = 0; i < 16; i++) {
411 IXGBE_READ_REG(hw, IXGBE_QPRC(i));
412 IXGBE_READ_REG(hw, IXGBE_QPTC(i));
413 if (hw->mac.type >= ixgbe_mac_82599EB) {
414 IXGBE_READ_REG(hw, IXGBE_QBRC_L(i));
415 IXGBE_READ_REG(hw, IXGBE_QBRC_H(i));
416 IXGBE_READ_REG(hw, IXGBE_QBTC_L(i));
417 IXGBE_READ_REG(hw, IXGBE_QBTC_H(i));
418 IXGBE_READ_REG(hw, IXGBE_QPRDC(i));
420 IXGBE_READ_REG(hw, IXGBE_QBRC(i));
421 IXGBE_READ_REG(hw, IXGBE_QBTC(i));
425 if (hw->mac.type == ixgbe_mac_X540) {
427 hw->phy.ops.identify(hw);
428 hw->phy.ops.read_reg(hw, IXGBE_PCRC8ECL, MDIO_MMD_PCS, &i);
429 hw->phy.ops.read_reg(hw, IXGBE_PCRC8ECH, MDIO_MMD_PCS, &i);
430 hw->phy.ops.read_reg(hw, IXGBE_LDPCECL, MDIO_MMD_PCS, &i);
431 hw->phy.ops.read_reg(hw, IXGBE_LDPCECH, MDIO_MMD_PCS, &i);
438 * ixgbe_read_pba_string_generic - Reads part number string from EEPROM
439 * @hw: pointer to hardware structure
440 * @pba_num: stores the part number string from the EEPROM
441 * @pba_num_size: part number string buffer length
443 * Reads the part number string from the EEPROM.
445 s32 ixgbe_read_pba_string_generic(struct ixgbe_hw *hw, u8 *pba_num,
454 if (pba_num == NULL) {
455 hw_dbg(hw, "PBA string buffer was null\n");
456 return IXGBE_ERR_INVALID_ARGUMENT;
459 ret_val = hw->eeprom.ops.read(hw, IXGBE_PBANUM0_PTR, &data);
461 hw_dbg(hw, "NVM Read Error\n");
465 ret_val = hw->eeprom.ops.read(hw, IXGBE_PBANUM1_PTR, &pba_ptr);
467 hw_dbg(hw, "NVM Read Error\n");
472 * if data is not ptr guard the PBA must be in legacy format which
473 * means pba_ptr is actually our second data word for the PBA number
474 * and we can decode it into an ascii string
476 if (data != IXGBE_PBANUM_PTR_GUARD) {
477 hw_dbg(hw, "NVM PBA number is not stored as string\n");
479 /* we will need 11 characters to store the PBA */
480 if (pba_num_size < 11) {
481 hw_dbg(hw, "PBA string buffer too small\n");
482 return IXGBE_ERR_NO_SPACE;
485 /* extract hex string from data and pba_ptr */
486 pba_num[0] = (data >> 12) & 0xF;
487 pba_num[1] = (data >> 8) & 0xF;
488 pba_num[2] = (data >> 4) & 0xF;
489 pba_num[3] = data & 0xF;
490 pba_num[4] = (pba_ptr >> 12) & 0xF;
491 pba_num[5] = (pba_ptr >> 8) & 0xF;
494 pba_num[8] = (pba_ptr >> 4) & 0xF;
495 pba_num[9] = pba_ptr & 0xF;
497 /* put a null character on the end of our string */
500 /* switch all the data but the '-' to hex char */
501 for (offset = 0; offset < 10; offset++) {
502 if (pba_num[offset] < 0xA)
503 pba_num[offset] += '0';
504 else if (pba_num[offset] < 0x10)
505 pba_num[offset] += 'A' - 0xA;
511 ret_val = hw->eeprom.ops.read(hw, pba_ptr, &length);
513 hw_dbg(hw, "NVM Read Error\n");
517 if (length == 0xFFFF || length == 0) {
518 hw_dbg(hw, "NVM PBA number section invalid length\n");
519 return IXGBE_ERR_PBA_SECTION;
522 /* check if pba_num buffer is big enough */
523 if (pba_num_size < (((u32)length * 2) - 1)) {
524 hw_dbg(hw, "PBA string buffer too small\n");
525 return IXGBE_ERR_NO_SPACE;
528 /* trim pba length from start of string */
532 for (offset = 0; offset < length; offset++) {
533 ret_val = hw->eeprom.ops.read(hw, pba_ptr + offset, &data);
535 hw_dbg(hw, "NVM Read Error\n");
538 pba_num[offset * 2] = (u8)(data >> 8);
539 pba_num[(offset * 2) + 1] = (u8)(data & 0xFF);
541 pba_num[offset * 2] = '\0';
547 * ixgbe_get_mac_addr_generic - Generic get MAC address
548 * @hw: pointer to hardware structure
549 * @mac_addr: Adapter MAC address
551 * Reads the adapter's MAC address from first Receive Address Register (RAR0)
552 * A reset of the adapter must be performed prior to calling this function
553 * in order for the MAC address to have been loaded from the EEPROM into RAR0
555 s32 ixgbe_get_mac_addr_generic(struct ixgbe_hw *hw, u8 *mac_addr)
561 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(0));
562 rar_low = IXGBE_READ_REG(hw, IXGBE_RAL(0));
564 for (i = 0; i < 4; i++)
565 mac_addr[i] = (u8)(rar_low >> (i*8));
567 for (i = 0; i < 2; i++)
568 mac_addr[i+4] = (u8)(rar_high >> (i*8));
574 * ixgbe_get_bus_info_generic - Generic set PCI bus info
575 * @hw: pointer to hardware structure
577 * Sets the PCI bus info (speed, width, type) within the ixgbe_hw structure
579 s32 ixgbe_get_bus_info_generic(struct ixgbe_hw *hw)
581 struct ixgbe_adapter *adapter = hw->back;
582 struct ixgbe_mac_info *mac = &hw->mac;
585 hw->bus.type = ixgbe_bus_type_pci_express;
587 /* Get the negotiated link width and speed from PCI config space */
588 pci_read_config_word(adapter->pdev, IXGBE_PCI_LINK_STATUS,
591 switch (link_status & IXGBE_PCI_LINK_WIDTH) {
592 case IXGBE_PCI_LINK_WIDTH_1:
593 hw->bus.width = ixgbe_bus_width_pcie_x1;
595 case IXGBE_PCI_LINK_WIDTH_2:
596 hw->bus.width = ixgbe_bus_width_pcie_x2;
598 case IXGBE_PCI_LINK_WIDTH_4:
599 hw->bus.width = ixgbe_bus_width_pcie_x4;
601 case IXGBE_PCI_LINK_WIDTH_8:
602 hw->bus.width = ixgbe_bus_width_pcie_x8;
605 hw->bus.width = ixgbe_bus_width_unknown;
609 switch (link_status & IXGBE_PCI_LINK_SPEED) {
610 case IXGBE_PCI_LINK_SPEED_2500:
611 hw->bus.speed = ixgbe_bus_speed_2500;
613 case IXGBE_PCI_LINK_SPEED_5000:
614 hw->bus.speed = ixgbe_bus_speed_5000;
617 hw->bus.speed = ixgbe_bus_speed_unknown;
621 mac->ops.set_lan_id(hw);
627 * ixgbe_set_lan_id_multi_port_pcie - Set LAN id for PCIe multiple port devices
628 * @hw: pointer to the HW structure
630 * Determines the LAN function id by reading memory-mapped registers
631 * and swaps the port value if requested.
633 void ixgbe_set_lan_id_multi_port_pcie(struct ixgbe_hw *hw)
635 struct ixgbe_bus_info *bus = &hw->bus;
638 reg = IXGBE_READ_REG(hw, IXGBE_STATUS);
639 bus->func = (reg & IXGBE_STATUS_LAN_ID) >> IXGBE_STATUS_LAN_ID_SHIFT;
640 bus->lan_id = bus->func;
642 /* check for a port swap */
643 reg = IXGBE_READ_REG(hw, IXGBE_FACTPS);
644 if (reg & IXGBE_FACTPS_LFS)
649 * ixgbe_stop_adapter_generic - Generic stop Tx/Rx units
650 * @hw: pointer to hardware structure
652 * Sets the adapter_stopped flag within ixgbe_hw struct. Clears interrupts,
653 * disables transmit and receive units. The adapter_stopped flag is used by
654 * the shared code and drivers to determine if the adapter is in a stopped
655 * state and should not touch the hardware.
657 s32 ixgbe_stop_adapter_generic(struct ixgbe_hw *hw)
663 * Set the adapter_stopped flag so other driver functions stop touching
666 hw->adapter_stopped = true;
668 /* Disable the receive unit */
669 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, 0);
671 /* Clear interrupt mask to stop interrupts from being generated */
672 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK);
674 /* Clear any pending interrupts, flush previous writes */
675 IXGBE_READ_REG(hw, IXGBE_EICR);
677 /* Disable the transmit unit. Each queue must be disabled. */
678 for (i = 0; i < hw->mac.max_tx_queues; i++)
679 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(i), IXGBE_TXDCTL_SWFLSH);
681 /* Disable the receive unit by stopping each queue */
682 for (i = 0; i < hw->mac.max_rx_queues; i++) {
683 reg_val = IXGBE_READ_REG(hw, IXGBE_RXDCTL(i));
684 reg_val &= ~IXGBE_RXDCTL_ENABLE;
685 reg_val |= IXGBE_RXDCTL_SWFLSH;
686 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(i), reg_val);
689 /* flush all queues disables */
690 IXGBE_WRITE_FLUSH(hw);
691 usleep_range(1000, 2000);
694 * Prevent the PCI-E bus from from hanging by disabling PCI-E master
695 * access and verify no pending requests
697 return ixgbe_disable_pcie_master(hw);
701 * ixgbe_led_on_generic - Turns on the software controllable LEDs.
702 * @hw: pointer to hardware structure
703 * @index: led number to turn on
705 s32 ixgbe_led_on_generic(struct ixgbe_hw *hw, u32 index)
707 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
709 /* To turn on the LED, set mode to ON. */
710 led_reg &= ~IXGBE_LED_MODE_MASK(index);
711 led_reg |= IXGBE_LED_ON << IXGBE_LED_MODE_SHIFT(index);
712 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
713 IXGBE_WRITE_FLUSH(hw);
719 * ixgbe_led_off_generic - Turns off the software controllable LEDs.
720 * @hw: pointer to hardware structure
721 * @index: led number to turn off
723 s32 ixgbe_led_off_generic(struct ixgbe_hw *hw, u32 index)
725 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
727 /* To turn off the LED, set mode to OFF. */
728 led_reg &= ~IXGBE_LED_MODE_MASK(index);
729 led_reg |= IXGBE_LED_OFF << IXGBE_LED_MODE_SHIFT(index);
730 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
731 IXGBE_WRITE_FLUSH(hw);
737 * ixgbe_init_eeprom_params_generic - Initialize EEPROM params
738 * @hw: pointer to hardware structure
740 * Initializes the EEPROM parameters ixgbe_eeprom_info within the
741 * ixgbe_hw struct in order to set up EEPROM access.
743 s32 ixgbe_init_eeprom_params_generic(struct ixgbe_hw *hw)
745 struct ixgbe_eeprom_info *eeprom = &hw->eeprom;
749 if (eeprom->type == ixgbe_eeprom_uninitialized) {
750 eeprom->type = ixgbe_eeprom_none;
751 /* Set default semaphore delay to 10ms which is a well
753 eeprom->semaphore_delay = 10;
754 /* Clear EEPROM page size, it will be initialized as needed */
755 eeprom->word_page_size = 0;
758 * Check for EEPROM present first.
759 * If not present leave as none
761 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
762 if (eec & IXGBE_EEC_PRES) {
763 eeprom->type = ixgbe_eeprom_spi;
766 * SPI EEPROM is assumed here. This code would need to
767 * change if a future EEPROM is not SPI.
769 eeprom_size = (u16)((eec & IXGBE_EEC_SIZE) >>
770 IXGBE_EEC_SIZE_SHIFT);
771 eeprom->word_size = 1 << (eeprom_size +
772 IXGBE_EEPROM_WORD_SIZE_SHIFT);
775 if (eec & IXGBE_EEC_ADDR_SIZE)
776 eeprom->address_bits = 16;
778 eeprom->address_bits = 8;
779 hw_dbg(hw, "Eeprom params: type = %d, size = %d, address bits: "
780 "%d\n", eeprom->type, eeprom->word_size,
781 eeprom->address_bits);
788 * ixgbe_write_eeprom_buffer_bit_bang_generic - Write EEPROM using bit-bang
789 * @hw: pointer to hardware structure
790 * @offset: offset within the EEPROM to write
791 * @words: number of words
792 * @data: 16 bit word(s) to write to EEPROM
794 * Reads 16 bit word(s) from EEPROM through bit-bang method
796 s32 ixgbe_write_eeprom_buffer_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
797 u16 words, u16 *data)
802 hw->eeprom.ops.init_params(hw);
805 status = IXGBE_ERR_INVALID_ARGUMENT;
809 if (offset + words > hw->eeprom.word_size) {
810 status = IXGBE_ERR_EEPROM;
815 * The EEPROM page size cannot be queried from the chip. We do lazy
816 * initialization. It is worth to do that when we write large buffer.
818 if ((hw->eeprom.word_page_size == 0) &&
819 (words > IXGBE_EEPROM_PAGE_SIZE_MAX))
820 ixgbe_detect_eeprom_page_size_generic(hw, offset);
823 * We cannot hold synchronization semaphores for too long
824 * to avoid other entity starvation. However it is more efficient
825 * to read in bursts than synchronizing access for each word.
827 for (i = 0; i < words; i += IXGBE_EEPROM_RD_BUFFER_MAX_COUNT) {
828 count = (words - i) / IXGBE_EEPROM_RD_BUFFER_MAX_COUNT > 0 ?
829 IXGBE_EEPROM_RD_BUFFER_MAX_COUNT : (words - i);
830 status = ixgbe_write_eeprom_buffer_bit_bang(hw, offset + i,
842 * ixgbe_write_eeprom_buffer_bit_bang - Writes 16 bit word(s) to EEPROM
843 * @hw: pointer to hardware structure
844 * @offset: offset within the EEPROM to be written to
845 * @words: number of word(s)
846 * @data: 16 bit word(s) to be written to the EEPROM
848 * If ixgbe_eeprom_update_checksum is not called after this function, the
849 * EEPROM will most likely contain an invalid checksum.
851 static s32 ixgbe_write_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset,
852 u16 words, u16 *data)
858 u8 write_opcode = IXGBE_EEPROM_WRITE_OPCODE_SPI;
860 /* Prepare the EEPROM for writing */
861 status = ixgbe_acquire_eeprom(hw);
864 if (ixgbe_ready_eeprom(hw) != 0) {
865 ixgbe_release_eeprom(hw);
866 status = IXGBE_ERR_EEPROM;
871 for (i = 0; i < words; i++) {
872 ixgbe_standby_eeprom(hw);
874 /* Send the WRITE ENABLE command (8 bit opcode ) */
875 ixgbe_shift_out_eeprom_bits(hw,
876 IXGBE_EEPROM_WREN_OPCODE_SPI,
877 IXGBE_EEPROM_OPCODE_BITS);
879 ixgbe_standby_eeprom(hw);
882 * Some SPI eeproms use the 8th address bit embedded
885 if ((hw->eeprom.address_bits == 8) &&
886 ((offset + i) >= 128))
887 write_opcode |= IXGBE_EEPROM_A8_OPCODE_SPI;
889 /* Send the Write command (8-bit opcode + addr) */
890 ixgbe_shift_out_eeprom_bits(hw, write_opcode,
891 IXGBE_EEPROM_OPCODE_BITS);
892 ixgbe_shift_out_eeprom_bits(hw, (u16)((offset + i) * 2),
893 hw->eeprom.address_bits);
895 page_size = hw->eeprom.word_page_size;
897 /* Send the data in burst via SPI*/
900 word = (word >> 8) | (word << 8);
901 ixgbe_shift_out_eeprom_bits(hw, word, 16);
906 /* do not wrap around page */
907 if (((offset + i) & (page_size - 1)) ==
910 } while (++i < words);
912 ixgbe_standby_eeprom(hw);
913 usleep_range(10000, 20000);
915 /* Done with writing - release the EEPROM */
916 ixgbe_release_eeprom(hw);
923 * ixgbe_write_eeprom_generic - Writes 16 bit value to EEPROM
924 * @hw: pointer to hardware structure
925 * @offset: offset within the EEPROM to be written to
926 * @data: 16 bit word to be written to the EEPROM
928 * If ixgbe_eeprom_update_checksum is not called after this function, the
929 * EEPROM will most likely contain an invalid checksum.
931 s32 ixgbe_write_eeprom_generic(struct ixgbe_hw *hw, u16 offset, u16 data)
935 hw->eeprom.ops.init_params(hw);
937 if (offset >= hw->eeprom.word_size) {
938 status = IXGBE_ERR_EEPROM;
942 status = ixgbe_write_eeprom_buffer_bit_bang(hw, offset, 1, &data);
949 * ixgbe_read_eeprom_buffer_bit_bang_generic - Read EEPROM using bit-bang
950 * @hw: pointer to hardware structure
951 * @offset: offset within the EEPROM to be read
952 * @words: number of word(s)
953 * @data: read 16 bit words(s) from EEPROM
955 * Reads 16 bit word(s) from EEPROM through bit-bang method
957 s32 ixgbe_read_eeprom_buffer_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
958 u16 words, u16 *data)
963 hw->eeprom.ops.init_params(hw);
966 status = IXGBE_ERR_INVALID_ARGUMENT;
970 if (offset + words > hw->eeprom.word_size) {
971 status = IXGBE_ERR_EEPROM;
976 * We cannot hold synchronization semaphores for too long
977 * to avoid other entity starvation. However it is more efficient
978 * to read in bursts than synchronizing access for each word.
980 for (i = 0; i < words; i += IXGBE_EEPROM_RD_BUFFER_MAX_COUNT) {
981 count = (words - i) / IXGBE_EEPROM_RD_BUFFER_MAX_COUNT > 0 ?
982 IXGBE_EEPROM_RD_BUFFER_MAX_COUNT : (words - i);
984 status = ixgbe_read_eeprom_buffer_bit_bang(hw, offset + i,
996 * ixgbe_read_eeprom_buffer_bit_bang - Read EEPROM using bit-bang
997 * @hw: pointer to hardware structure
998 * @offset: offset within the EEPROM to be read
999 * @words: number of word(s)
1000 * @data: read 16 bit word(s) from EEPROM
1002 * Reads 16 bit word(s) from EEPROM through bit-bang method
1004 static s32 ixgbe_read_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset,
1005 u16 words, u16 *data)
1009 u8 read_opcode = IXGBE_EEPROM_READ_OPCODE_SPI;
1012 /* Prepare the EEPROM for reading */
1013 status = ixgbe_acquire_eeprom(hw);
1016 if (ixgbe_ready_eeprom(hw) != 0) {
1017 ixgbe_release_eeprom(hw);
1018 status = IXGBE_ERR_EEPROM;
1023 for (i = 0; i < words; i++) {
1024 ixgbe_standby_eeprom(hw);
1026 * Some SPI eeproms use the 8th address bit embedded
1029 if ((hw->eeprom.address_bits == 8) &&
1030 ((offset + i) >= 128))
1031 read_opcode |= IXGBE_EEPROM_A8_OPCODE_SPI;
1033 /* Send the READ command (opcode + addr) */
1034 ixgbe_shift_out_eeprom_bits(hw, read_opcode,
1035 IXGBE_EEPROM_OPCODE_BITS);
1036 ixgbe_shift_out_eeprom_bits(hw, (u16)((offset + i) * 2),
1037 hw->eeprom.address_bits);
1039 /* Read the data. */
1040 word_in = ixgbe_shift_in_eeprom_bits(hw, 16);
1041 data[i] = (word_in >> 8) | (word_in << 8);
1044 /* End this read operation */
1045 ixgbe_release_eeprom(hw);
1052 * ixgbe_read_eeprom_bit_bang_generic - Read EEPROM word using bit-bang
1053 * @hw: pointer to hardware structure
1054 * @offset: offset within the EEPROM to be read
1055 * @data: read 16 bit value from EEPROM
1057 * Reads 16 bit value from EEPROM through bit-bang method
1059 s32 ixgbe_read_eeprom_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
1064 hw->eeprom.ops.init_params(hw);
1066 if (offset >= hw->eeprom.word_size) {
1067 status = IXGBE_ERR_EEPROM;
1071 status = ixgbe_read_eeprom_buffer_bit_bang(hw, offset, 1, data);
1078 * ixgbe_read_eerd_buffer_generic - Read EEPROM word(s) using EERD
1079 * @hw: pointer to hardware structure
1080 * @offset: offset of word in the EEPROM to read
1081 * @words: number of word(s)
1082 * @data: 16 bit word(s) from the EEPROM
1084 * Reads a 16 bit word(s) from the EEPROM using the EERD register.
1086 s32 ixgbe_read_eerd_buffer_generic(struct ixgbe_hw *hw, u16 offset,
1087 u16 words, u16 *data)
1093 hw->eeprom.ops.init_params(hw);
1096 status = IXGBE_ERR_INVALID_ARGUMENT;
1100 if (offset >= hw->eeprom.word_size) {
1101 status = IXGBE_ERR_EEPROM;
1105 for (i = 0; i < words; i++) {
1106 eerd = ((offset + i) << IXGBE_EEPROM_RW_ADDR_SHIFT) +
1107 IXGBE_EEPROM_RW_REG_START;
1109 IXGBE_WRITE_REG(hw, IXGBE_EERD, eerd);
1110 status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_READ);
1113 data[i] = (IXGBE_READ_REG(hw, IXGBE_EERD) >>
1114 IXGBE_EEPROM_RW_REG_DATA);
1116 hw_dbg(hw, "Eeprom read timed out\n");
1125 * ixgbe_detect_eeprom_page_size_generic - Detect EEPROM page size
1126 * @hw: pointer to hardware structure
1127 * @offset: offset within the EEPROM to be used as a scratch pad
1129 * Discover EEPROM page size by writing marching data at given offset.
1130 * This function is called only when we are writing a new large buffer
1131 * at given offset so the data would be overwritten anyway.
1133 static s32 ixgbe_detect_eeprom_page_size_generic(struct ixgbe_hw *hw,
1136 u16 data[IXGBE_EEPROM_PAGE_SIZE_MAX];
1140 for (i = 0; i < IXGBE_EEPROM_PAGE_SIZE_MAX; i++)
1143 hw->eeprom.word_page_size = IXGBE_EEPROM_PAGE_SIZE_MAX;
1144 status = ixgbe_write_eeprom_buffer_bit_bang(hw, offset,
1145 IXGBE_EEPROM_PAGE_SIZE_MAX, data);
1146 hw->eeprom.word_page_size = 0;
1150 status = ixgbe_read_eeprom_buffer_bit_bang(hw, offset, 1, data);
1155 * When writing in burst more than the actual page size
1156 * EEPROM address wraps around current page.
1158 hw->eeprom.word_page_size = IXGBE_EEPROM_PAGE_SIZE_MAX - data[0];
1160 hw_dbg(hw, "Detected EEPROM page size = %d words.",
1161 hw->eeprom.word_page_size);
1167 * ixgbe_read_eerd_generic - Read EEPROM word using EERD
1168 * @hw: pointer to hardware structure
1169 * @offset: offset of word in the EEPROM to read
1170 * @data: word read from the EEPROM
1172 * Reads a 16 bit word from the EEPROM using the EERD register.
1174 s32 ixgbe_read_eerd_generic(struct ixgbe_hw *hw, u16 offset, u16 *data)
1176 return ixgbe_read_eerd_buffer_generic(hw, offset, 1, data);
1180 * ixgbe_write_eewr_buffer_generic - Write EEPROM word(s) using EEWR
1181 * @hw: pointer to hardware structure
1182 * @offset: offset of word in the EEPROM to write
1183 * @words: number of words
1184 * @data: word(s) write to the EEPROM
1186 * Write a 16 bit word(s) to the EEPROM using the EEWR register.
1188 s32 ixgbe_write_eewr_buffer_generic(struct ixgbe_hw *hw, u16 offset,
1189 u16 words, u16 *data)
1195 hw->eeprom.ops.init_params(hw);
1198 status = IXGBE_ERR_INVALID_ARGUMENT;
1202 if (offset >= hw->eeprom.word_size) {
1203 status = IXGBE_ERR_EEPROM;
1207 for (i = 0; i < words; i++) {
1208 eewr = ((offset + i) << IXGBE_EEPROM_RW_ADDR_SHIFT) |
1209 (data[i] << IXGBE_EEPROM_RW_REG_DATA) |
1210 IXGBE_EEPROM_RW_REG_START;
1212 status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_WRITE);
1214 hw_dbg(hw, "Eeprom write EEWR timed out\n");
1218 IXGBE_WRITE_REG(hw, IXGBE_EEWR, eewr);
1220 status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_WRITE);
1222 hw_dbg(hw, "Eeprom write EEWR timed out\n");
1232 * ixgbe_write_eewr_generic - Write EEPROM word using EEWR
1233 * @hw: pointer to hardware structure
1234 * @offset: offset of word in the EEPROM to write
1235 * @data: word write to the EEPROM
1237 * Write a 16 bit word to the EEPROM using the EEWR register.
1239 s32 ixgbe_write_eewr_generic(struct ixgbe_hw *hw, u16 offset, u16 data)
1241 return ixgbe_write_eewr_buffer_generic(hw, offset, 1, &data);
1245 * ixgbe_poll_eerd_eewr_done - Poll EERD read or EEWR write status
1246 * @hw: pointer to hardware structure
1247 * @ee_reg: EEPROM flag for polling
1249 * Polls the status bit (bit 1) of the EERD or EEWR to determine when the
1250 * read or write is done respectively.
1252 static s32 ixgbe_poll_eerd_eewr_done(struct ixgbe_hw *hw, u32 ee_reg)
1256 s32 status = IXGBE_ERR_EEPROM;
1258 for (i = 0; i < IXGBE_EERD_EEWR_ATTEMPTS; i++) {
1259 if (ee_reg == IXGBE_NVM_POLL_READ)
1260 reg = IXGBE_READ_REG(hw, IXGBE_EERD);
1262 reg = IXGBE_READ_REG(hw, IXGBE_EEWR);
1264 if (reg & IXGBE_EEPROM_RW_REG_DONE) {
1274 * ixgbe_acquire_eeprom - Acquire EEPROM using bit-bang
1275 * @hw: pointer to hardware structure
1277 * Prepares EEPROM for access using bit-bang method. This function should
1278 * be called before issuing a command to the EEPROM.
1280 static s32 ixgbe_acquire_eeprom(struct ixgbe_hw *hw)
1286 if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) != 0)
1287 status = IXGBE_ERR_SWFW_SYNC;
1290 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1292 /* Request EEPROM Access */
1293 eec |= IXGBE_EEC_REQ;
1294 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1296 for (i = 0; i < IXGBE_EEPROM_GRANT_ATTEMPTS; i++) {
1297 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1298 if (eec & IXGBE_EEC_GNT)
1303 /* Release if grant not acquired */
1304 if (!(eec & IXGBE_EEC_GNT)) {
1305 eec &= ~IXGBE_EEC_REQ;
1306 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1307 hw_dbg(hw, "Could not acquire EEPROM grant\n");
1309 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
1310 status = IXGBE_ERR_EEPROM;
1313 /* Setup EEPROM for Read/Write */
1315 /* Clear CS and SK */
1316 eec &= ~(IXGBE_EEC_CS | IXGBE_EEC_SK);
1317 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1318 IXGBE_WRITE_FLUSH(hw);
1326 * ixgbe_get_eeprom_semaphore - Get hardware semaphore
1327 * @hw: pointer to hardware structure
1329 * Sets the hardware semaphores so EEPROM access can occur for bit-bang method
1331 static s32 ixgbe_get_eeprom_semaphore(struct ixgbe_hw *hw)
1333 s32 status = IXGBE_ERR_EEPROM;
1338 /* Get SMBI software semaphore between device drivers first */
1339 for (i = 0; i < timeout; i++) {
1341 * If the SMBI bit is 0 when we read it, then the bit will be
1342 * set and we have the semaphore
1344 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
1345 if (!(swsm & IXGBE_SWSM_SMBI)) {
1353 hw_dbg(hw, "Driver can't access the Eeprom - SMBI Semaphore "
1356 * this release is particularly important because our attempts
1357 * above to get the semaphore may have succeeded, and if there
1358 * was a timeout, we should unconditionally clear the semaphore
1359 * bits to free the driver to make progress
1361 ixgbe_release_eeprom_semaphore(hw);
1366 * If the SMBI bit is 0 when we read it, then the bit will be
1367 * set and we have the semaphore
1369 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
1370 if (!(swsm & IXGBE_SWSM_SMBI))
1374 /* Now get the semaphore between SW/FW through the SWESMBI bit */
1376 for (i = 0; i < timeout; i++) {
1377 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
1379 /* Set the SW EEPROM semaphore bit to request access */
1380 swsm |= IXGBE_SWSM_SWESMBI;
1381 IXGBE_WRITE_REG(hw, IXGBE_SWSM, swsm);
1384 * If we set the bit successfully then we got the
1387 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
1388 if (swsm & IXGBE_SWSM_SWESMBI)
1395 * Release semaphores and return error if SW EEPROM semaphore
1396 * was not granted because we don't have access to the EEPROM
1399 hw_dbg(hw, "SWESMBI Software EEPROM semaphore "
1401 ixgbe_release_eeprom_semaphore(hw);
1402 status = IXGBE_ERR_EEPROM;
1405 hw_dbg(hw, "Software semaphore SMBI between device drivers "
1413 * ixgbe_release_eeprom_semaphore - Release hardware semaphore
1414 * @hw: pointer to hardware structure
1416 * This function clears hardware semaphore bits.
1418 static void ixgbe_release_eeprom_semaphore(struct ixgbe_hw *hw)
1422 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
1424 /* Release both semaphores by writing 0 to the bits SWESMBI and SMBI */
1425 swsm &= ~(IXGBE_SWSM_SWESMBI | IXGBE_SWSM_SMBI);
1426 IXGBE_WRITE_REG(hw, IXGBE_SWSM, swsm);
1427 IXGBE_WRITE_FLUSH(hw);
1431 * ixgbe_ready_eeprom - Polls for EEPROM ready
1432 * @hw: pointer to hardware structure
1434 static s32 ixgbe_ready_eeprom(struct ixgbe_hw *hw)
1441 * Read "Status Register" repeatedly until the LSB is cleared. The
1442 * EEPROM will signal that the command has been completed by clearing
1443 * bit 0 of the internal status register. If it's not cleared within
1444 * 5 milliseconds, then error out.
1446 for (i = 0; i < IXGBE_EEPROM_MAX_RETRY_SPI; i += 5) {
1447 ixgbe_shift_out_eeprom_bits(hw, IXGBE_EEPROM_RDSR_OPCODE_SPI,
1448 IXGBE_EEPROM_OPCODE_BITS);
1449 spi_stat_reg = (u8)ixgbe_shift_in_eeprom_bits(hw, 8);
1450 if (!(spi_stat_reg & IXGBE_EEPROM_STATUS_RDY_SPI))
1454 ixgbe_standby_eeprom(hw);
1458 * On some parts, SPI write time could vary from 0-20mSec on 3.3V
1459 * devices (and only 0-5mSec on 5V devices)
1461 if (i >= IXGBE_EEPROM_MAX_RETRY_SPI) {
1462 hw_dbg(hw, "SPI EEPROM Status error\n");
1463 status = IXGBE_ERR_EEPROM;
1470 * ixgbe_standby_eeprom - Returns EEPROM to a "standby" state
1471 * @hw: pointer to hardware structure
1473 static void ixgbe_standby_eeprom(struct ixgbe_hw *hw)
1477 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1479 /* Toggle CS to flush commands */
1480 eec |= IXGBE_EEC_CS;
1481 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1482 IXGBE_WRITE_FLUSH(hw);
1484 eec &= ~IXGBE_EEC_CS;
1485 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1486 IXGBE_WRITE_FLUSH(hw);
1491 * ixgbe_shift_out_eeprom_bits - Shift data bits out to the EEPROM.
1492 * @hw: pointer to hardware structure
1493 * @data: data to send to the EEPROM
1494 * @count: number of bits to shift out
1496 static void ixgbe_shift_out_eeprom_bits(struct ixgbe_hw *hw, u16 data,
1503 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1506 * Mask is used to shift "count" bits of "data" out to the EEPROM
1507 * one bit at a time. Determine the starting bit based on count
1509 mask = 0x01 << (count - 1);
1511 for (i = 0; i < count; i++) {
1513 * A "1" is shifted out to the EEPROM by setting bit "DI" to a
1514 * "1", and then raising and then lowering the clock (the SK
1515 * bit controls the clock input to the EEPROM). A "0" is
1516 * shifted out to the EEPROM by setting "DI" to "0" and then
1517 * raising and then lowering the clock.
1520 eec |= IXGBE_EEC_DI;
1522 eec &= ~IXGBE_EEC_DI;
1524 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1525 IXGBE_WRITE_FLUSH(hw);
1529 ixgbe_raise_eeprom_clk(hw, &eec);
1530 ixgbe_lower_eeprom_clk(hw, &eec);
1533 * Shift mask to signify next bit of data to shift in to the
1539 /* We leave the "DI" bit set to "0" when we leave this routine. */
1540 eec &= ~IXGBE_EEC_DI;
1541 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1542 IXGBE_WRITE_FLUSH(hw);
1546 * ixgbe_shift_in_eeprom_bits - Shift data bits in from the EEPROM
1547 * @hw: pointer to hardware structure
1549 static u16 ixgbe_shift_in_eeprom_bits(struct ixgbe_hw *hw, u16 count)
1556 * In order to read a register from the EEPROM, we need to shift
1557 * 'count' bits in from the EEPROM. Bits are "shifted in" by raising
1558 * the clock input to the EEPROM (setting the SK bit), and then reading
1559 * the value of the "DO" bit. During this "shifting in" process the
1560 * "DI" bit should always be clear.
1562 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1564 eec &= ~(IXGBE_EEC_DO | IXGBE_EEC_DI);
1566 for (i = 0; i < count; i++) {
1568 ixgbe_raise_eeprom_clk(hw, &eec);
1570 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1572 eec &= ~(IXGBE_EEC_DI);
1573 if (eec & IXGBE_EEC_DO)
1576 ixgbe_lower_eeprom_clk(hw, &eec);
1583 * ixgbe_raise_eeprom_clk - Raises the EEPROM's clock input.
1584 * @hw: pointer to hardware structure
1585 * @eec: EEC register's current value
1587 static void ixgbe_raise_eeprom_clk(struct ixgbe_hw *hw, u32 *eec)
1590 * Raise the clock input to the EEPROM
1591 * (setting the SK bit), then delay
1593 *eec = *eec | IXGBE_EEC_SK;
1594 IXGBE_WRITE_REG(hw, IXGBE_EEC, *eec);
1595 IXGBE_WRITE_FLUSH(hw);
1600 * ixgbe_lower_eeprom_clk - Lowers the EEPROM's clock input.
1601 * @hw: pointer to hardware structure
1602 * @eecd: EECD's current value
1604 static void ixgbe_lower_eeprom_clk(struct ixgbe_hw *hw, u32 *eec)
1607 * Lower the clock input to the EEPROM (clearing the SK bit), then
1610 *eec = *eec & ~IXGBE_EEC_SK;
1611 IXGBE_WRITE_REG(hw, IXGBE_EEC, *eec);
1612 IXGBE_WRITE_FLUSH(hw);
1617 * ixgbe_release_eeprom - Release EEPROM, release semaphores
1618 * @hw: pointer to hardware structure
1620 static void ixgbe_release_eeprom(struct ixgbe_hw *hw)
1624 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1626 eec |= IXGBE_EEC_CS; /* Pull CS high */
1627 eec &= ~IXGBE_EEC_SK; /* Lower SCK */
1629 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1630 IXGBE_WRITE_FLUSH(hw);
1634 /* Stop requesting EEPROM access */
1635 eec &= ~IXGBE_EEC_REQ;
1636 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1638 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
1641 * Delay before attempt to obtain semaphore again to allow FW
1642 * access. semaphore_delay is in ms we need us for usleep_range
1644 usleep_range(hw->eeprom.semaphore_delay * 1000,
1645 hw->eeprom.semaphore_delay * 2000);
1649 * ixgbe_calc_eeprom_checksum_generic - Calculates and returns the checksum
1650 * @hw: pointer to hardware structure
1652 u16 ixgbe_calc_eeprom_checksum_generic(struct ixgbe_hw *hw)
1661 /* Include 0x0-0x3F in the checksum */
1662 for (i = 0; i < IXGBE_EEPROM_CHECKSUM; i++) {
1663 if (hw->eeprom.ops.read(hw, i, &word) != 0) {
1664 hw_dbg(hw, "EEPROM read failed\n");
1670 /* Include all data from pointers except for the fw pointer */
1671 for (i = IXGBE_PCIE_ANALOG_PTR; i < IXGBE_FW_PTR; i++) {
1672 hw->eeprom.ops.read(hw, i, &pointer);
1674 /* Make sure the pointer seems valid */
1675 if (pointer != 0xFFFF && pointer != 0) {
1676 hw->eeprom.ops.read(hw, pointer, &length);
1678 if (length != 0xFFFF && length != 0) {
1679 for (j = pointer+1; j <= pointer+length; j++) {
1680 hw->eeprom.ops.read(hw, j, &word);
1687 checksum = (u16)IXGBE_EEPROM_SUM - checksum;
1693 * ixgbe_validate_eeprom_checksum_generic - Validate EEPROM checksum
1694 * @hw: pointer to hardware structure
1695 * @checksum_val: calculated checksum
1697 * Performs checksum calculation and validates the EEPROM checksum. If the
1698 * caller does not need checksum_val, the value can be NULL.
1700 s32 ixgbe_validate_eeprom_checksum_generic(struct ixgbe_hw *hw,
1705 u16 read_checksum = 0;
1708 * Read the first word from the EEPROM. If this times out or fails, do
1709 * not continue or we could be in for a very long wait while every
1712 status = hw->eeprom.ops.read(hw, 0, &checksum);
1715 checksum = hw->eeprom.ops.calc_checksum(hw);
1717 hw->eeprom.ops.read(hw, IXGBE_EEPROM_CHECKSUM, &read_checksum);
1720 * Verify read checksum from EEPROM is the same as
1721 * calculated checksum
1723 if (read_checksum != checksum)
1724 status = IXGBE_ERR_EEPROM_CHECKSUM;
1726 /* If the user cares, return the calculated checksum */
1728 *checksum_val = checksum;
1730 hw_dbg(hw, "EEPROM read failed\n");
1737 * ixgbe_update_eeprom_checksum_generic - Updates the EEPROM checksum
1738 * @hw: pointer to hardware structure
1740 s32 ixgbe_update_eeprom_checksum_generic(struct ixgbe_hw *hw)
1746 * Read the first word from the EEPROM. If this times out or fails, do
1747 * not continue or we could be in for a very long wait while every
1750 status = hw->eeprom.ops.read(hw, 0, &checksum);
1753 checksum = hw->eeprom.ops.calc_checksum(hw);
1754 status = hw->eeprom.ops.write(hw, IXGBE_EEPROM_CHECKSUM,
1757 hw_dbg(hw, "EEPROM read failed\n");
1764 * ixgbe_validate_mac_addr - Validate MAC address
1765 * @mac_addr: pointer to MAC address.
1767 * Tests a MAC address to ensure it is a valid Individual Address
1769 s32 ixgbe_validate_mac_addr(u8 *mac_addr)
1773 /* Make sure it is not a multicast address */
1774 if (IXGBE_IS_MULTICAST(mac_addr))
1775 status = IXGBE_ERR_INVALID_MAC_ADDR;
1776 /* Not a broadcast address */
1777 else if (IXGBE_IS_BROADCAST(mac_addr))
1778 status = IXGBE_ERR_INVALID_MAC_ADDR;
1779 /* Reject the zero address */
1780 else if (mac_addr[0] == 0 && mac_addr[1] == 0 && mac_addr[2] == 0 &&
1781 mac_addr[3] == 0 && mac_addr[4] == 0 && mac_addr[5] == 0)
1782 status = IXGBE_ERR_INVALID_MAC_ADDR;
1788 * ixgbe_set_rar_generic - Set Rx address register
1789 * @hw: pointer to hardware structure
1790 * @index: Receive address register to write
1791 * @addr: Address to put into receive address register
1792 * @vmdq: VMDq "set" or "pool" index
1793 * @enable_addr: set flag that address is active
1795 * Puts an ethernet address into a receive address register.
1797 s32 ixgbe_set_rar_generic(struct ixgbe_hw *hw, u32 index, u8 *addr, u32 vmdq,
1800 u32 rar_low, rar_high;
1801 u32 rar_entries = hw->mac.num_rar_entries;
1803 /* Make sure we are using a valid rar index range */
1804 if (index >= rar_entries) {
1805 hw_dbg(hw, "RAR index %d is out of range.\n", index);
1806 return IXGBE_ERR_INVALID_ARGUMENT;
1809 /* setup VMDq pool selection before this RAR gets enabled */
1810 hw->mac.ops.set_vmdq(hw, index, vmdq);
1813 * HW expects these in little endian so we reverse the byte
1814 * order from network order (big endian) to little endian
1816 rar_low = ((u32)addr[0] |
1817 ((u32)addr[1] << 8) |
1818 ((u32)addr[2] << 16) |
1819 ((u32)addr[3] << 24));
1821 * Some parts put the VMDq setting in the extra RAH bits,
1822 * so save everything except the lower 16 bits that hold part
1823 * of the address and the address valid bit.
1825 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index));
1826 rar_high &= ~(0x0000FFFF | IXGBE_RAH_AV);
1827 rar_high |= ((u32)addr[4] | ((u32)addr[5] << 8));
1829 if (enable_addr != 0)
1830 rar_high |= IXGBE_RAH_AV;
1832 IXGBE_WRITE_REG(hw, IXGBE_RAL(index), rar_low);
1833 IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high);
1839 * ixgbe_clear_rar_generic - Remove Rx address register
1840 * @hw: pointer to hardware structure
1841 * @index: Receive address register to write
1843 * Clears an ethernet address from a receive address register.
1845 s32 ixgbe_clear_rar_generic(struct ixgbe_hw *hw, u32 index)
1848 u32 rar_entries = hw->mac.num_rar_entries;
1850 /* Make sure we are using a valid rar index range */
1851 if (index >= rar_entries) {
1852 hw_dbg(hw, "RAR index %d is out of range.\n", index);
1853 return IXGBE_ERR_INVALID_ARGUMENT;
1857 * Some parts put the VMDq setting in the extra RAH bits,
1858 * so save everything except the lower 16 bits that hold part
1859 * of the address and the address valid bit.
1861 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index));
1862 rar_high &= ~(0x0000FFFF | IXGBE_RAH_AV);
1864 IXGBE_WRITE_REG(hw, IXGBE_RAL(index), 0);
1865 IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high);
1867 /* clear VMDq pool/queue selection for this RAR */
1868 hw->mac.ops.clear_vmdq(hw, index, IXGBE_CLEAR_VMDQ_ALL);
1874 * ixgbe_init_rx_addrs_generic - Initializes receive address filters.
1875 * @hw: pointer to hardware structure
1877 * Places the MAC address in receive address register 0 and clears the rest
1878 * of the receive address registers. Clears the multicast table. Assumes
1879 * the receiver is in reset when the routine is called.
1881 s32 ixgbe_init_rx_addrs_generic(struct ixgbe_hw *hw)
1884 u32 rar_entries = hw->mac.num_rar_entries;
1887 * If the current mac address is valid, assume it is a software override
1888 * to the permanent address.
1889 * Otherwise, use the permanent address from the eeprom.
1891 if (ixgbe_validate_mac_addr(hw->mac.addr) ==
1892 IXGBE_ERR_INVALID_MAC_ADDR) {
1893 /* Get the MAC address from the RAR0 for later reference */
1894 hw->mac.ops.get_mac_addr(hw, hw->mac.addr);
1896 hw_dbg(hw, " Keeping Current RAR0 Addr =%pM\n", hw->mac.addr);
1898 /* Setup the receive address. */
1899 hw_dbg(hw, "Overriding MAC Address in RAR[0]\n");
1900 hw_dbg(hw, " New MAC Addr =%pM\n", hw->mac.addr);
1902 hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0, IXGBE_RAH_AV);
1904 /* clear VMDq pool/queue selection for RAR 0 */
1905 hw->mac.ops.clear_vmdq(hw, 0, IXGBE_CLEAR_VMDQ_ALL);
1907 hw->addr_ctrl.overflow_promisc = 0;
1909 hw->addr_ctrl.rar_used_count = 1;
1911 /* Zero out the other receive addresses. */
1912 hw_dbg(hw, "Clearing RAR[1-%d]\n", rar_entries - 1);
1913 for (i = 1; i < rar_entries; i++) {
1914 IXGBE_WRITE_REG(hw, IXGBE_RAL(i), 0);
1915 IXGBE_WRITE_REG(hw, IXGBE_RAH(i), 0);
1919 hw->addr_ctrl.mta_in_use = 0;
1920 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, hw->mac.mc_filter_type);
1922 hw_dbg(hw, " Clearing MTA\n");
1923 for (i = 0; i < hw->mac.mcft_size; i++)
1924 IXGBE_WRITE_REG(hw, IXGBE_MTA(i), 0);
1926 if (hw->mac.ops.init_uta_tables)
1927 hw->mac.ops.init_uta_tables(hw);
1933 * ixgbe_mta_vector - Determines bit-vector in multicast table to set
1934 * @hw: pointer to hardware structure
1935 * @mc_addr: the multicast address
1937 * Extracts the 12 bits, from a multicast address, to determine which
1938 * bit-vector to set in the multicast table. The hardware uses 12 bits, from
1939 * incoming rx multicast addresses, to determine the bit-vector to check in
1940 * the MTA. Which of the 4 combination, of 12-bits, the hardware uses is set
1941 * by the MO field of the MCSTCTRL. The MO field is set during initialization
1942 * to mc_filter_type.
1944 static s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr)
1948 switch (hw->mac.mc_filter_type) {
1949 case 0: /* use bits [47:36] of the address */
1950 vector = ((mc_addr[4] >> 4) | (((u16)mc_addr[5]) << 4));
1952 case 1: /* use bits [46:35] of the address */
1953 vector = ((mc_addr[4] >> 3) | (((u16)mc_addr[5]) << 5));
1955 case 2: /* use bits [45:34] of the address */
1956 vector = ((mc_addr[4] >> 2) | (((u16)mc_addr[5]) << 6));
1958 case 3: /* use bits [43:32] of the address */
1959 vector = ((mc_addr[4]) | (((u16)mc_addr[5]) << 8));
1961 default: /* Invalid mc_filter_type */
1962 hw_dbg(hw, "MC filter type param set incorrectly\n");
1966 /* vector can only be 12-bits or boundary will be exceeded */
1972 * ixgbe_set_mta - Set bit-vector in multicast table
1973 * @hw: pointer to hardware structure
1974 * @hash_value: Multicast address hash value
1976 * Sets the bit-vector in the multicast table.
1978 static void ixgbe_set_mta(struct ixgbe_hw *hw, u8 *mc_addr)
1984 hw->addr_ctrl.mta_in_use++;
1986 vector = ixgbe_mta_vector(hw, mc_addr);
1987 hw_dbg(hw, " bit-vector = 0x%03X\n", vector);
1990 * The MTA is a register array of 128 32-bit registers. It is treated
1991 * like an array of 4096 bits. We want to set bit
1992 * BitArray[vector_value]. So we figure out what register the bit is
1993 * in, read it, OR in the new bit, then write back the new value. The
1994 * register is determined by the upper 7 bits of the vector value and
1995 * the bit within that register are determined by the lower 5 bits of
1998 vector_reg = (vector >> 5) & 0x7F;
1999 vector_bit = vector & 0x1F;
2000 hw->mac.mta_shadow[vector_reg] |= (1 << vector_bit);
2004 * ixgbe_update_mc_addr_list_generic - Updates MAC list of multicast addresses
2005 * @hw: pointer to hardware structure
2006 * @netdev: pointer to net device structure
2008 * The given list replaces any existing list. Clears the MC addrs from receive
2009 * address registers and the multicast table. Uses unused receive address
2010 * registers for the first multicast addresses, and hashes the rest into the
2013 s32 ixgbe_update_mc_addr_list_generic(struct ixgbe_hw *hw,
2014 struct net_device *netdev)
2016 struct netdev_hw_addr *ha;
2020 * Set the new number of MC addresses that we are being requested to
2023 hw->addr_ctrl.num_mc_addrs = netdev_mc_count(netdev);
2024 hw->addr_ctrl.mta_in_use = 0;
2026 /* Clear mta_shadow */
2027 hw_dbg(hw, " Clearing MTA\n");
2028 memset(&hw->mac.mta_shadow, 0, sizeof(hw->mac.mta_shadow));
2030 /* Update mta shadow */
2031 netdev_for_each_mc_addr(ha, netdev) {
2032 hw_dbg(hw, " Adding the multicast addresses:\n");
2033 ixgbe_set_mta(hw, ha->addr);
2037 for (i = 0; i < hw->mac.mcft_size; i++)
2038 IXGBE_WRITE_REG_ARRAY(hw, IXGBE_MTA(0), i,
2039 hw->mac.mta_shadow[i]);
2041 if (hw->addr_ctrl.mta_in_use > 0)
2042 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL,
2043 IXGBE_MCSTCTRL_MFE | hw->mac.mc_filter_type);
2045 hw_dbg(hw, "ixgbe_update_mc_addr_list_generic Complete\n");
2050 * ixgbe_enable_mc_generic - Enable multicast address in RAR
2051 * @hw: pointer to hardware structure
2053 * Enables multicast address in RAR and the use of the multicast hash table.
2055 s32 ixgbe_enable_mc_generic(struct ixgbe_hw *hw)
2057 struct ixgbe_addr_filter_info *a = &hw->addr_ctrl;
2059 if (a->mta_in_use > 0)
2060 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, IXGBE_MCSTCTRL_MFE |
2061 hw->mac.mc_filter_type);
2067 * ixgbe_disable_mc_generic - Disable multicast address in RAR
2068 * @hw: pointer to hardware structure
2070 * Disables multicast address in RAR and the use of the multicast hash table.
2072 s32 ixgbe_disable_mc_generic(struct ixgbe_hw *hw)
2074 struct ixgbe_addr_filter_info *a = &hw->addr_ctrl;
2076 if (a->mta_in_use > 0)
2077 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, hw->mac.mc_filter_type);
2083 * ixgbe_fc_enable_generic - Enable flow control
2084 * @hw: pointer to hardware structure
2086 * Enable flow control according to the current settings.
2088 s32 ixgbe_fc_enable_generic(struct ixgbe_hw *hw)
2091 u32 mflcn_reg, fccfg_reg;
2097 * Validate the water mark configuration for packet buffer 0. Zero
2098 * water marks indicate that the packet buffer was not configured
2099 * and the watermarks for packet buffer 0 should always be configured.
2101 if (!hw->fc.low_water ||
2102 !hw->fc.high_water[0] ||
2103 !hw->fc.pause_time) {
2104 hw_dbg(hw, "Invalid water mark configuration\n");
2105 ret_val = IXGBE_ERR_INVALID_LINK_SETTINGS;
2109 /* Negotiate the fc mode to use */
2110 ixgbe_fc_autoneg(hw);
2112 /* Disable any previous flow control settings */
2113 mflcn_reg = IXGBE_READ_REG(hw, IXGBE_MFLCN);
2114 mflcn_reg &= ~(IXGBE_MFLCN_RPFCE_MASK | IXGBE_MFLCN_RFCE);
2116 fccfg_reg = IXGBE_READ_REG(hw, IXGBE_FCCFG);
2117 fccfg_reg &= ~(IXGBE_FCCFG_TFCE_802_3X | IXGBE_FCCFG_TFCE_PRIORITY);
2120 * The possible values of fc.current_mode are:
2121 * 0: Flow control is completely disabled
2122 * 1: Rx flow control is enabled (we can receive pause frames,
2123 * but not send pause frames).
2124 * 2: Tx flow control is enabled (we can send pause frames but
2125 * we do not support receiving pause frames).
2126 * 3: Both Rx and Tx flow control (symmetric) are enabled.
2129 switch (hw->fc.current_mode) {
2132 * Flow control is disabled by software override or autoneg.
2133 * The code below will actually disable it in the HW.
2136 case ixgbe_fc_rx_pause:
2138 * Rx Flow control is enabled and Tx Flow control is
2139 * disabled by software override. Since there really
2140 * isn't a way to advertise that we are capable of RX
2141 * Pause ONLY, we will advertise that we support both
2142 * symmetric and asymmetric Rx PAUSE. Later, we will
2143 * disable the adapter's ability to send PAUSE frames.
2145 mflcn_reg |= IXGBE_MFLCN_RFCE;
2147 case ixgbe_fc_tx_pause:
2149 * Tx Flow control is enabled, and Rx Flow control is
2150 * disabled by software override.
2152 fccfg_reg |= IXGBE_FCCFG_TFCE_802_3X;
2155 /* Flow control (both Rx and Tx) is enabled by SW override. */
2156 mflcn_reg |= IXGBE_MFLCN_RFCE;
2157 fccfg_reg |= IXGBE_FCCFG_TFCE_802_3X;
2160 hw_dbg(hw, "Flow control param set incorrectly\n");
2161 ret_val = IXGBE_ERR_CONFIG;
2166 /* Set 802.3x based flow control settings. */
2167 mflcn_reg |= IXGBE_MFLCN_DPF;
2168 IXGBE_WRITE_REG(hw, IXGBE_MFLCN, mflcn_reg);
2169 IXGBE_WRITE_REG(hw, IXGBE_FCCFG, fccfg_reg);
2171 fcrtl = (hw->fc.low_water << 10) | IXGBE_FCRTL_XONE;
2173 /* Set up and enable Rx high/low water mark thresholds, enable XON. */
2174 for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
2175 if ((hw->fc.current_mode & ixgbe_fc_tx_pause) &&
2176 hw->fc.high_water[i]) {
2177 IXGBE_WRITE_REG(hw, IXGBE_FCRTL_82599(i), fcrtl);
2178 fcrth = (hw->fc.high_water[i] << 10) | IXGBE_FCRTH_FCEN;
2180 IXGBE_WRITE_REG(hw, IXGBE_FCRTL_82599(i), 0);
2182 * In order to prevent Tx hangs when the internal Tx
2183 * switch is enabled we must set the high water mark
2184 * to the maximum FCRTH value. This allows the Tx
2185 * switch to function even under heavy Rx workloads.
2187 fcrth = IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(i)) - 32;
2190 IXGBE_WRITE_REG(hw, IXGBE_FCRTH_82599(i), fcrth);
2193 /* Configure pause time (2 TCs per register) */
2194 reg = hw->fc.pause_time * 0x00010001;
2195 for (i = 0; i < (MAX_TRAFFIC_CLASS / 2); i++)
2196 IXGBE_WRITE_REG(hw, IXGBE_FCTTV(i), reg);
2198 IXGBE_WRITE_REG(hw, IXGBE_FCRTV, hw->fc.pause_time / 2);
2205 * ixgbe_negotiate_fc - Negotiate flow control
2206 * @hw: pointer to hardware structure
2207 * @adv_reg: flow control advertised settings
2208 * @lp_reg: link partner's flow control settings
2209 * @adv_sym: symmetric pause bit in advertisement
2210 * @adv_asm: asymmetric pause bit in advertisement
2211 * @lp_sym: symmetric pause bit in link partner advertisement
2212 * @lp_asm: asymmetric pause bit in link partner advertisement
2214 * Find the intersection between advertised settings and link partner's
2215 * advertised settings
2217 static s32 ixgbe_negotiate_fc(struct ixgbe_hw *hw, u32 adv_reg, u32 lp_reg,
2218 u32 adv_sym, u32 adv_asm, u32 lp_sym, u32 lp_asm)
2220 if ((!(adv_reg)) || (!(lp_reg)))
2221 return IXGBE_ERR_FC_NOT_NEGOTIATED;
2223 if ((adv_reg & adv_sym) && (lp_reg & lp_sym)) {
2225 * Now we need to check if the user selected Rx ONLY
2226 * of pause frames. In this case, we had to advertise
2227 * FULL flow control because we could not advertise RX
2228 * ONLY. Hence, we must now check to see if we need to
2229 * turn OFF the TRANSMISSION of PAUSE frames.
2231 if (hw->fc.requested_mode == ixgbe_fc_full) {
2232 hw->fc.current_mode = ixgbe_fc_full;
2233 hw_dbg(hw, "Flow Control = FULL.\n");
2235 hw->fc.current_mode = ixgbe_fc_rx_pause;
2236 hw_dbg(hw, "Flow Control=RX PAUSE frames only\n");
2238 } else if (!(adv_reg & adv_sym) && (adv_reg & adv_asm) &&
2239 (lp_reg & lp_sym) && (lp_reg & lp_asm)) {
2240 hw->fc.current_mode = ixgbe_fc_tx_pause;
2241 hw_dbg(hw, "Flow Control = TX PAUSE frames only.\n");
2242 } else if ((adv_reg & adv_sym) && (adv_reg & adv_asm) &&
2243 !(lp_reg & lp_sym) && (lp_reg & lp_asm)) {
2244 hw->fc.current_mode = ixgbe_fc_rx_pause;
2245 hw_dbg(hw, "Flow Control = RX PAUSE frames only.\n");
2247 hw->fc.current_mode = ixgbe_fc_none;
2248 hw_dbg(hw, "Flow Control = NONE.\n");
2254 * ixgbe_fc_autoneg_fiber - Enable flow control on 1 gig fiber
2255 * @hw: pointer to hardware structure
2257 * Enable flow control according on 1 gig fiber.
2259 static s32 ixgbe_fc_autoneg_fiber(struct ixgbe_hw *hw)
2261 u32 pcs_anadv_reg, pcs_lpab_reg, linkstat;
2262 s32 ret_val = IXGBE_ERR_FC_NOT_NEGOTIATED;
2265 * On multispeed fiber at 1g, bail out if
2266 * - link is up but AN did not complete, or if
2267 * - link is up and AN completed but timed out
2270 linkstat = IXGBE_READ_REG(hw, IXGBE_PCS1GLSTA);
2271 if ((!!(linkstat & IXGBE_PCS1GLSTA_AN_COMPLETE) == 0) ||
2272 (!!(linkstat & IXGBE_PCS1GLSTA_AN_TIMED_OUT) == 1))
2275 pcs_anadv_reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANA);
2276 pcs_lpab_reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANLP);
2278 ret_val = ixgbe_negotiate_fc(hw, pcs_anadv_reg,
2279 pcs_lpab_reg, IXGBE_PCS1GANA_SYM_PAUSE,
2280 IXGBE_PCS1GANA_ASM_PAUSE,
2281 IXGBE_PCS1GANA_SYM_PAUSE,
2282 IXGBE_PCS1GANA_ASM_PAUSE);
2289 * ixgbe_fc_autoneg_backplane - Enable flow control IEEE clause 37
2290 * @hw: pointer to hardware structure
2292 * Enable flow control according to IEEE clause 37.
2294 static s32 ixgbe_fc_autoneg_backplane(struct ixgbe_hw *hw)
2296 u32 links2, anlp1_reg, autoc_reg, links;
2297 s32 ret_val = IXGBE_ERR_FC_NOT_NEGOTIATED;
2300 * On backplane, bail out if
2301 * - backplane autoneg was not completed, or if
2302 * - we are 82599 and link partner is not AN enabled
2304 links = IXGBE_READ_REG(hw, IXGBE_LINKS);
2305 if ((links & IXGBE_LINKS_KX_AN_COMP) == 0)
2308 if (hw->mac.type == ixgbe_mac_82599EB) {
2309 links2 = IXGBE_READ_REG(hw, IXGBE_LINKS2);
2310 if ((links2 & IXGBE_LINKS2_AN_SUPPORTED) == 0)
2314 * Read the 10g AN autoc and LP ability registers and resolve
2315 * local flow control settings accordingly
2317 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
2318 anlp1_reg = IXGBE_READ_REG(hw, IXGBE_ANLP1);
2320 ret_val = ixgbe_negotiate_fc(hw, autoc_reg,
2321 anlp1_reg, IXGBE_AUTOC_SYM_PAUSE, IXGBE_AUTOC_ASM_PAUSE,
2322 IXGBE_ANLP1_SYM_PAUSE, IXGBE_ANLP1_ASM_PAUSE);
2329 * ixgbe_fc_autoneg_copper - Enable flow control IEEE clause 37
2330 * @hw: pointer to hardware structure
2332 * Enable flow control according to IEEE clause 37.
2334 static s32 ixgbe_fc_autoneg_copper(struct ixgbe_hw *hw)
2336 u16 technology_ability_reg = 0;
2337 u16 lp_technology_ability_reg = 0;
2339 hw->phy.ops.read_reg(hw, MDIO_AN_ADVERTISE,
2341 &technology_ability_reg);
2342 hw->phy.ops.read_reg(hw, MDIO_AN_LPA,
2344 &lp_technology_ability_reg);
2346 return ixgbe_negotiate_fc(hw, (u32)technology_ability_reg,
2347 (u32)lp_technology_ability_reg,
2348 IXGBE_TAF_SYM_PAUSE, IXGBE_TAF_ASM_PAUSE,
2349 IXGBE_TAF_SYM_PAUSE, IXGBE_TAF_ASM_PAUSE);
2353 * ixgbe_fc_autoneg - Configure flow control
2354 * @hw: pointer to hardware structure
2356 * Compares our advertised flow control capabilities to those advertised by
2357 * our link partner, and determines the proper flow control mode to use.
2359 void ixgbe_fc_autoneg(struct ixgbe_hw *hw)
2361 s32 ret_val = IXGBE_ERR_FC_NOT_NEGOTIATED;
2362 ixgbe_link_speed speed;
2366 * AN should have completed when the cable was plugged in.
2367 * Look for reasons to bail out. Bail out if:
2368 * - FC autoneg is disabled, or if
2371 * Since we're being called from an LSC, link is already known to be up.
2372 * So use link_up_wait_to_complete=false.
2374 if (hw->fc.disable_fc_autoneg)
2377 hw->mac.ops.check_link(hw, &speed, &link_up, false);
2381 switch (hw->phy.media_type) {
2382 /* Autoneg flow control on fiber adapters */
2383 case ixgbe_media_type_fiber:
2384 if (speed == IXGBE_LINK_SPEED_1GB_FULL)
2385 ret_val = ixgbe_fc_autoneg_fiber(hw);
2388 /* Autoneg flow control on backplane adapters */
2389 case ixgbe_media_type_backplane:
2390 ret_val = ixgbe_fc_autoneg_backplane(hw);
2393 /* Autoneg flow control on copper adapters */
2394 case ixgbe_media_type_copper:
2395 if (ixgbe_device_supports_autoneg_fc(hw) == 0)
2396 ret_val = ixgbe_fc_autoneg_copper(hw);
2405 hw->fc.fc_was_autonegged = true;
2407 hw->fc.fc_was_autonegged = false;
2408 hw->fc.current_mode = hw->fc.requested_mode;
2413 * ixgbe_disable_pcie_master - Disable PCI-express master access
2414 * @hw: pointer to hardware structure
2416 * Disables PCI-Express master access and verifies there are no pending
2417 * requests. IXGBE_ERR_MASTER_REQUESTS_PENDING is returned if master disable
2418 * bit hasn't caused the master requests to be disabled, else 0
2419 * is returned signifying master requests disabled.
2421 static s32 ixgbe_disable_pcie_master(struct ixgbe_hw *hw)
2423 struct ixgbe_adapter *adapter = hw->back;
2428 /* Always set this bit to ensure any future transactions are blocked */
2429 IXGBE_WRITE_REG(hw, IXGBE_CTRL, IXGBE_CTRL_GIO_DIS);
2431 /* Exit if master requests are blocked */
2432 if (!(IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_GIO))
2435 /* Poll for master request bit to clear */
2436 for (i = 0; i < IXGBE_PCI_MASTER_DISABLE_TIMEOUT; i++) {
2438 if (!(IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_GIO))
2443 * Two consecutive resets are required via CTRL.RST per datasheet
2444 * 5.2.5.3.2 Master Disable. We set a flag to inform the reset routine
2445 * of this need. The first reset prevents new master requests from
2446 * being issued by our device. We then must wait 1usec or more for any
2447 * remaining completions from the PCIe bus to trickle in, and then reset
2448 * again to clear out any effects they may have had on our device.
2450 hw_dbg(hw, "GIO Master Disable bit didn't clear - requesting resets\n");
2451 hw->mac.flags |= IXGBE_FLAGS_DOUBLE_RESET_REQUIRED;
2454 * Before proceeding, make sure that the PCIe block does not have
2455 * transactions pending.
2457 for (i = 0; i < IXGBE_PCI_MASTER_DISABLE_TIMEOUT; i++) {
2459 pci_read_config_word(adapter->pdev, IXGBE_PCI_DEVICE_STATUS,
2461 if (!(value & IXGBE_PCI_DEVICE_STATUS_TRANSACTION_PENDING))
2465 hw_dbg(hw, "PCIe transaction pending bit also did not clear.\n");
2466 status = IXGBE_ERR_MASTER_REQUESTS_PENDING;
2473 * ixgbe_acquire_swfw_sync - Acquire SWFW semaphore
2474 * @hw: pointer to hardware structure
2475 * @mask: Mask to specify which semaphore to acquire
2477 * Acquires the SWFW semaphore through the GSSR register for the specified
2478 * function (CSR, PHY0, PHY1, EEPROM, Flash)
2480 s32 ixgbe_acquire_swfw_sync(struct ixgbe_hw *hw, u16 mask)
2484 u32 fwmask = mask << 5;
2489 * SW EEPROM semaphore bit is used for access to all
2490 * SW_FW_SYNC/GSSR bits (not just EEPROM)
2492 if (ixgbe_get_eeprom_semaphore(hw))
2493 return IXGBE_ERR_SWFW_SYNC;
2495 gssr = IXGBE_READ_REG(hw, IXGBE_GSSR);
2496 if (!(gssr & (fwmask | swmask)))
2500 * Firmware currently using resource (fwmask) or other software
2501 * thread currently using resource (swmask)
2503 ixgbe_release_eeprom_semaphore(hw);
2504 usleep_range(5000, 10000);
2509 hw_dbg(hw, "Driver can't access resource, SW_FW_SYNC timeout.\n");
2510 return IXGBE_ERR_SWFW_SYNC;
2514 IXGBE_WRITE_REG(hw, IXGBE_GSSR, gssr);
2516 ixgbe_release_eeprom_semaphore(hw);
2521 * ixgbe_release_swfw_sync - Release SWFW semaphore
2522 * @hw: pointer to hardware structure
2523 * @mask: Mask to specify which semaphore to release
2525 * Releases the SWFW semaphore through the GSSR register for the specified
2526 * function (CSR, PHY0, PHY1, EEPROM, Flash)
2528 void ixgbe_release_swfw_sync(struct ixgbe_hw *hw, u16 mask)
2533 ixgbe_get_eeprom_semaphore(hw);
2535 gssr = IXGBE_READ_REG(hw, IXGBE_GSSR);
2537 IXGBE_WRITE_REG(hw, IXGBE_GSSR, gssr);
2539 ixgbe_release_eeprom_semaphore(hw);
2543 * ixgbe_disable_rx_buff_generic - Stops the receive data path
2544 * @hw: pointer to hardware structure
2546 * Stops the receive data path and waits for the HW to internally
2547 * empty the Rx security block.
2549 s32 ixgbe_disable_rx_buff_generic(struct ixgbe_hw *hw)
2551 #define IXGBE_MAX_SECRX_POLL 40
2555 secrxreg = IXGBE_READ_REG(hw, IXGBE_SECRXCTRL);
2556 secrxreg |= IXGBE_SECRXCTRL_RX_DIS;
2557 IXGBE_WRITE_REG(hw, IXGBE_SECRXCTRL, secrxreg);
2558 for (i = 0; i < IXGBE_MAX_SECRX_POLL; i++) {
2559 secrxreg = IXGBE_READ_REG(hw, IXGBE_SECRXSTAT);
2560 if (secrxreg & IXGBE_SECRXSTAT_SECRX_RDY)
2563 /* Use interrupt-safe sleep just in case */
2567 /* For informational purposes only */
2568 if (i >= IXGBE_MAX_SECRX_POLL)
2569 hw_dbg(hw, "Rx unit being enabled before security "
2570 "path fully disabled. Continuing with init.\n");
2577 * ixgbe_enable_rx_buff - Enables the receive data path
2578 * @hw: pointer to hardware structure
2580 * Enables the receive data path
2582 s32 ixgbe_enable_rx_buff_generic(struct ixgbe_hw *hw)
2586 secrxreg = IXGBE_READ_REG(hw, IXGBE_SECRXCTRL);
2587 secrxreg &= ~IXGBE_SECRXCTRL_RX_DIS;
2588 IXGBE_WRITE_REG(hw, IXGBE_SECRXCTRL, secrxreg);
2589 IXGBE_WRITE_FLUSH(hw);
2595 * ixgbe_enable_rx_dma_generic - Enable the Rx DMA unit
2596 * @hw: pointer to hardware structure
2597 * @regval: register value to write to RXCTRL
2599 * Enables the Rx DMA unit
2601 s32 ixgbe_enable_rx_dma_generic(struct ixgbe_hw *hw, u32 regval)
2603 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, regval);
2609 * ixgbe_blink_led_start_generic - Blink LED based on index.
2610 * @hw: pointer to hardware structure
2611 * @index: led number to blink
2613 s32 ixgbe_blink_led_start_generic(struct ixgbe_hw *hw, u32 index)
2615 ixgbe_link_speed speed = 0;
2616 bool link_up = false;
2617 u32 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
2618 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
2621 * Link must be up to auto-blink the LEDs;
2622 * Force it if link is down.
2624 hw->mac.ops.check_link(hw, &speed, &link_up, false);
2627 autoc_reg |= IXGBE_AUTOC_AN_RESTART;
2628 autoc_reg |= IXGBE_AUTOC_FLU;
2629 IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc_reg);
2630 IXGBE_WRITE_FLUSH(hw);
2631 usleep_range(10000, 20000);
2634 led_reg &= ~IXGBE_LED_MODE_MASK(index);
2635 led_reg |= IXGBE_LED_BLINK(index);
2636 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
2637 IXGBE_WRITE_FLUSH(hw);
2643 * ixgbe_blink_led_stop_generic - Stop blinking LED based on index.
2644 * @hw: pointer to hardware structure
2645 * @index: led number to stop blinking
2647 s32 ixgbe_blink_led_stop_generic(struct ixgbe_hw *hw, u32 index)
2649 u32 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
2650 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
2652 autoc_reg &= ~IXGBE_AUTOC_FLU;
2653 autoc_reg |= IXGBE_AUTOC_AN_RESTART;
2654 IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc_reg);
2656 led_reg &= ~IXGBE_LED_MODE_MASK(index);
2657 led_reg &= ~IXGBE_LED_BLINK(index);
2658 led_reg |= IXGBE_LED_LINK_ACTIVE << IXGBE_LED_MODE_SHIFT(index);
2659 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
2660 IXGBE_WRITE_FLUSH(hw);
2666 * ixgbe_get_san_mac_addr_offset - Get SAN MAC address offset from the EEPROM
2667 * @hw: pointer to hardware structure
2668 * @san_mac_offset: SAN MAC address offset
2670 * This function will read the EEPROM location for the SAN MAC address
2671 * pointer, and returns the value at that location. This is used in both
2672 * get and set mac_addr routines.
2674 static s32 ixgbe_get_san_mac_addr_offset(struct ixgbe_hw *hw,
2675 u16 *san_mac_offset)
2678 * First read the EEPROM pointer to see if the MAC addresses are
2681 hw->eeprom.ops.read(hw, IXGBE_SAN_MAC_ADDR_PTR, san_mac_offset);
2687 * ixgbe_get_san_mac_addr_generic - SAN MAC address retrieval from the EEPROM
2688 * @hw: pointer to hardware structure
2689 * @san_mac_addr: SAN MAC address
2691 * Reads the SAN MAC address from the EEPROM, if it's available. This is
2692 * per-port, so set_lan_id() must be called before reading the addresses.
2693 * set_lan_id() is called by identify_sfp(), but this cannot be relied
2694 * upon for non-SFP connections, so we must call it here.
2696 s32 ixgbe_get_san_mac_addr_generic(struct ixgbe_hw *hw, u8 *san_mac_addr)
2698 u16 san_mac_data, san_mac_offset;
2702 * First read the EEPROM pointer to see if the MAC addresses are
2703 * available. If they're not, no point in calling set_lan_id() here.
2705 ixgbe_get_san_mac_addr_offset(hw, &san_mac_offset);
2707 if ((san_mac_offset == 0) || (san_mac_offset == 0xFFFF)) {
2709 * No addresses available in this EEPROM. It's not an
2710 * error though, so just wipe the local address and return.
2712 for (i = 0; i < 6; i++)
2713 san_mac_addr[i] = 0xFF;
2715 goto san_mac_addr_out;
2718 /* make sure we know which port we need to program */
2719 hw->mac.ops.set_lan_id(hw);
2720 /* apply the port offset to the address offset */
2721 (hw->bus.func) ? (san_mac_offset += IXGBE_SAN_MAC_ADDR_PORT1_OFFSET) :
2722 (san_mac_offset += IXGBE_SAN_MAC_ADDR_PORT0_OFFSET);
2723 for (i = 0; i < 3; i++) {
2724 hw->eeprom.ops.read(hw, san_mac_offset, &san_mac_data);
2725 san_mac_addr[i * 2] = (u8)(san_mac_data);
2726 san_mac_addr[i * 2 + 1] = (u8)(san_mac_data >> 8);
2735 * ixgbe_get_pcie_msix_count_generic - Gets MSI-X vector count
2736 * @hw: pointer to hardware structure
2738 * Read PCIe configuration space, and get the MSI-X vector count from
2739 * the capabilities table.
2741 u16 ixgbe_get_pcie_msix_count_generic(struct ixgbe_hw *hw)
2743 struct ixgbe_adapter *adapter = hw->back;
2748 switch (hw->mac.type) {
2749 case ixgbe_mac_82598EB:
2750 pcie_offset = IXGBE_PCIE_MSIX_82598_CAPS;
2751 max_msix_count = IXGBE_MAX_MSIX_VECTORS_82598;
2753 case ixgbe_mac_82599EB:
2754 case ixgbe_mac_X540:
2755 pcie_offset = IXGBE_PCIE_MSIX_82599_CAPS;
2756 max_msix_count = IXGBE_MAX_MSIX_VECTORS_82599;
2762 pci_read_config_word(adapter->pdev, pcie_offset, &msix_count);
2763 msix_count &= IXGBE_PCIE_MSIX_TBL_SZ_MASK;
2765 /* MSI-X count is zero-based in HW */
2768 if (msix_count > max_msix_count)
2769 msix_count = max_msix_count;
2775 * ixgbe_clear_vmdq_generic - Disassociate a VMDq pool index from a rx address
2776 * @hw: pointer to hardware struct
2777 * @rar: receive address register index to disassociate
2778 * @vmdq: VMDq pool index to remove from the rar
2780 s32 ixgbe_clear_vmdq_generic(struct ixgbe_hw *hw, u32 rar, u32 vmdq)
2782 u32 mpsar_lo, mpsar_hi;
2783 u32 rar_entries = hw->mac.num_rar_entries;
2785 /* Make sure we are using a valid rar index range */
2786 if (rar >= rar_entries) {
2787 hw_dbg(hw, "RAR index %d is out of range.\n", rar);
2788 return IXGBE_ERR_INVALID_ARGUMENT;
2791 mpsar_lo = IXGBE_READ_REG(hw, IXGBE_MPSAR_LO(rar));
2792 mpsar_hi = IXGBE_READ_REG(hw, IXGBE_MPSAR_HI(rar));
2794 if (!mpsar_lo && !mpsar_hi)
2797 if (vmdq == IXGBE_CLEAR_VMDQ_ALL) {
2799 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), 0);
2803 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), 0);
2806 } else if (vmdq < 32) {
2807 mpsar_lo &= ~(1 << vmdq);
2808 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), mpsar_lo);
2810 mpsar_hi &= ~(1 << (vmdq - 32));
2811 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), mpsar_hi);
2814 /* was that the last pool using this rar? */
2815 if (mpsar_lo == 0 && mpsar_hi == 0 && rar != 0)
2816 hw->mac.ops.clear_rar(hw, rar);
2822 * ixgbe_set_vmdq_generic - Associate a VMDq pool index with a rx address
2823 * @hw: pointer to hardware struct
2824 * @rar: receive address register index to associate with a VMDq index
2825 * @vmdq: VMDq pool index
2827 s32 ixgbe_set_vmdq_generic(struct ixgbe_hw *hw, u32 rar, u32 vmdq)
2830 u32 rar_entries = hw->mac.num_rar_entries;
2832 /* Make sure we are using a valid rar index range */
2833 if (rar >= rar_entries) {
2834 hw_dbg(hw, "RAR index %d is out of range.\n", rar);
2835 return IXGBE_ERR_INVALID_ARGUMENT;
2839 mpsar = IXGBE_READ_REG(hw, IXGBE_MPSAR_LO(rar));
2841 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), mpsar);
2843 mpsar = IXGBE_READ_REG(hw, IXGBE_MPSAR_HI(rar));
2844 mpsar |= 1 << (vmdq - 32);
2845 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), mpsar);
2851 * ixgbe_init_uta_tables_generic - Initialize the Unicast Table Array
2852 * @hw: pointer to hardware structure
2854 s32 ixgbe_init_uta_tables_generic(struct ixgbe_hw *hw)
2858 for (i = 0; i < 128; i++)
2859 IXGBE_WRITE_REG(hw, IXGBE_UTA(i), 0);
2865 * ixgbe_find_vlvf_slot - find the vlanid or the first empty slot
2866 * @hw: pointer to hardware structure
2867 * @vlan: VLAN id to write to VLAN filter
2869 * return the VLVF index where this VLAN id should be placed
2872 static s32 ixgbe_find_vlvf_slot(struct ixgbe_hw *hw, u32 vlan)
2875 u32 first_empty_slot = 0;
2878 /* short cut the special case */
2883 * Search for the vlan id in the VLVF entries. Save off the first empty
2884 * slot found along the way
2886 for (regindex = 1; regindex < IXGBE_VLVF_ENTRIES; regindex++) {
2887 bits = IXGBE_READ_REG(hw, IXGBE_VLVF(regindex));
2888 if (!bits && !(first_empty_slot))
2889 first_empty_slot = regindex;
2890 else if ((bits & 0x0FFF) == vlan)
2895 * If regindex is less than IXGBE_VLVF_ENTRIES, then we found the vlan
2896 * in the VLVF. Else use the first empty VLVF register for this
2899 if (regindex >= IXGBE_VLVF_ENTRIES) {
2900 if (first_empty_slot)
2901 regindex = first_empty_slot;
2903 hw_dbg(hw, "No space in VLVF.\n");
2904 regindex = IXGBE_ERR_NO_SPACE;
2912 * ixgbe_set_vfta_generic - Set VLAN filter table
2913 * @hw: pointer to hardware structure
2914 * @vlan: VLAN id to write to VLAN filter
2915 * @vind: VMDq output index that maps queue to VLAN id in VFVFB
2916 * @vlan_on: boolean flag to turn on/off VLAN in VFVF
2918 * Turn on/off specified VLAN in the VLAN filter table.
2920 s32 ixgbe_set_vfta_generic(struct ixgbe_hw *hw, u32 vlan, u32 vind,
2929 bool vfta_changed = false;
2932 return IXGBE_ERR_PARAM;
2935 * this is a 2 part operation - first the VFTA, then the
2936 * VLVF and VLVFB if VT Mode is set
2937 * We don't write the VFTA until we know the VLVF part succeeded.
2941 * The VFTA is a bitstring made up of 128 32-bit registers
2942 * that enable the particular VLAN id, much like the MTA:
2943 * bits[11-5]: which register
2944 * bits[4-0]: which bit in the register
2946 regindex = (vlan >> 5) & 0x7F;
2947 bitindex = vlan & 0x1F;
2948 targetbit = (1 << bitindex);
2949 vfta = IXGBE_READ_REG(hw, IXGBE_VFTA(regindex));
2952 if (!(vfta & targetbit)) {
2954 vfta_changed = true;
2957 if ((vfta & targetbit)) {
2959 vfta_changed = true;
2966 * make sure the vlan is in VLVF
2967 * set the vind bit in the matching VLVFB
2969 * clear the pool bit and possibly the vind
2971 vt = IXGBE_READ_REG(hw, IXGBE_VT_CTL);
2972 if (vt & IXGBE_VT_CTL_VT_ENABLE) {
2975 vlvf_index = ixgbe_find_vlvf_slot(hw, vlan);
2980 /* set the pool bit */
2982 bits = IXGBE_READ_REG(hw,
2983 IXGBE_VLVFB(vlvf_index*2));
2984 bits |= (1 << vind);
2986 IXGBE_VLVFB(vlvf_index*2),
2989 bits = IXGBE_READ_REG(hw,
2990 IXGBE_VLVFB((vlvf_index*2)+1));
2991 bits |= (1 << (vind-32));
2993 IXGBE_VLVFB((vlvf_index*2)+1),
2997 /* clear the pool bit */
2999 bits = IXGBE_READ_REG(hw,
3000 IXGBE_VLVFB(vlvf_index*2));
3001 bits &= ~(1 << vind);
3003 IXGBE_VLVFB(vlvf_index*2),
3005 bits |= IXGBE_READ_REG(hw,
3006 IXGBE_VLVFB((vlvf_index*2)+1));
3008 bits = IXGBE_READ_REG(hw,
3009 IXGBE_VLVFB((vlvf_index*2)+1));
3010 bits &= ~(1 << (vind-32));
3012 IXGBE_VLVFB((vlvf_index*2)+1),
3014 bits |= IXGBE_READ_REG(hw,
3015 IXGBE_VLVFB(vlvf_index*2));
3020 * If there are still bits set in the VLVFB registers
3021 * for the VLAN ID indicated we need to see if the
3022 * caller is requesting that we clear the VFTA entry bit.
3023 * If the caller has requested that we clear the VFTA
3024 * entry bit but there are still pools/VFs using this VLAN
3025 * ID entry then ignore the request. We're not worried
3026 * about the case where we're turning the VFTA VLAN ID
3027 * entry bit on, only when requested to turn it off as
3028 * there may be multiple pools and/or VFs using the
3029 * VLAN ID entry. In that case we cannot clear the
3030 * VFTA bit until all pools/VFs using that VLAN ID have also
3031 * been cleared. This will be indicated by "bits" being
3035 IXGBE_WRITE_REG(hw, IXGBE_VLVF(vlvf_index),
3036 (IXGBE_VLVF_VIEN | vlan));
3038 /* someone wants to clear the vfta entry
3039 * but some pools/VFs are still using it.
3041 vfta_changed = false;
3045 IXGBE_WRITE_REG(hw, IXGBE_VLVF(vlvf_index), 0);
3049 IXGBE_WRITE_REG(hw, IXGBE_VFTA(regindex), vfta);
3055 * ixgbe_clear_vfta_generic - Clear VLAN filter table
3056 * @hw: pointer to hardware structure
3058 * Clears the VLAN filer table, and the VMDq index associated with the filter
3060 s32 ixgbe_clear_vfta_generic(struct ixgbe_hw *hw)
3064 for (offset = 0; offset < hw->mac.vft_size; offset++)
3065 IXGBE_WRITE_REG(hw, IXGBE_VFTA(offset), 0);
3067 for (offset = 0; offset < IXGBE_VLVF_ENTRIES; offset++) {
3068 IXGBE_WRITE_REG(hw, IXGBE_VLVF(offset), 0);
3069 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(offset*2), 0);
3070 IXGBE_WRITE_REG(hw, IXGBE_VLVFB((offset*2)+1), 0);
3077 * ixgbe_check_mac_link_generic - Determine link and speed status
3078 * @hw: pointer to hardware structure
3079 * @speed: pointer to link speed
3080 * @link_up: true when link is up
3081 * @link_up_wait_to_complete: bool used to wait for link up or not
3083 * Reads the links register to determine if link is up and the current speed
3085 s32 ixgbe_check_mac_link_generic(struct ixgbe_hw *hw, ixgbe_link_speed *speed,
3086 bool *link_up, bool link_up_wait_to_complete)
3088 u32 links_reg, links_orig;
3091 /* clear the old state */
3092 links_orig = IXGBE_READ_REG(hw, IXGBE_LINKS);
3094 links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
3096 if (links_orig != links_reg) {
3097 hw_dbg(hw, "LINKS changed from %08X to %08X\n",
3098 links_orig, links_reg);
3101 if (link_up_wait_to_complete) {
3102 for (i = 0; i < IXGBE_LINK_UP_TIME; i++) {
3103 if (links_reg & IXGBE_LINKS_UP) {
3110 links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
3113 if (links_reg & IXGBE_LINKS_UP)
3119 if ((links_reg & IXGBE_LINKS_SPEED_82599) ==
3120 IXGBE_LINKS_SPEED_10G_82599)
3121 *speed = IXGBE_LINK_SPEED_10GB_FULL;
3122 else if ((links_reg & IXGBE_LINKS_SPEED_82599) ==
3123 IXGBE_LINKS_SPEED_1G_82599)
3124 *speed = IXGBE_LINK_SPEED_1GB_FULL;
3125 else if ((links_reg & IXGBE_LINKS_SPEED_82599) ==
3126 IXGBE_LINKS_SPEED_100_82599)
3127 *speed = IXGBE_LINK_SPEED_100_FULL;
3129 *speed = IXGBE_LINK_SPEED_UNKNOWN;
3135 * ixgbe_get_wwn_prefix_generic - Get alternative WWNN/WWPN prefix from
3137 * @hw: pointer to hardware structure
3138 * @wwnn_prefix: the alternative WWNN prefix
3139 * @wwpn_prefix: the alternative WWPN prefix
3141 * This function will read the EEPROM from the alternative SAN MAC address
3142 * block to check the support for the alternative WWNN/WWPN prefix support.
3144 s32 ixgbe_get_wwn_prefix_generic(struct ixgbe_hw *hw, u16 *wwnn_prefix,
3148 u16 alt_san_mac_blk_offset;
3150 /* clear output first */
3151 *wwnn_prefix = 0xFFFF;
3152 *wwpn_prefix = 0xFFFF;
3154 /* check if alternative SAN MAC is supported */
3155 hw->eeprom.ops.read(hw, IXGBE_ALT_SAN_MAC_ADDR_BLK_PTR,
3156 &alt_san_mac_blk_offset);
3158 if ((alt_san_mac_blk_offset == 0) ||
3159 (alt_san_mac_blk_offset == 0xFFFF))
3160 goto wwn_prefix_out;
3162 /* check capability in alternative san mac address block */
3163 offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_CAPS_OFFSET;
3164 hw->eeprom.ops.read(hw, offset, &caps);
3165 if (!(caps & IXGBE_ALT_SAN_MAC_ADDR_CAPS_ALTWWN))
3166 goto wwn_prefix_out;
3168 /* get the corresponding prefix for WWNN/WWPN */
3169 offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_WWNN_OFFSET;
3170 hw->eeprom.ops.read(hw, offset, wwnn_prefix);
3172 offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_WWPN_OFFSET;
3173 hw->eeprom.ops.read(hw, offset, wwpn_prefix);
3180 * ixgbe_set_mac_anti_spoofing - Enable/Disable MAC anti-spoofing
3181 * @hw: pointer to hardware structure
3182 * @enable: enable or disable switch for anti-spoofing
3183 * @pf: Physical Function pool - do not enable anti-spoofing for the PF
3186 void ixgbe_set_mac_anti_spoofing(struct ixgbe_hw *hw, bool enable, int pf)
3189 int pf_target_reg = pf >> 3;
3190 int pf_target_shift = pf % 8;
3193 if (hw->mac.type == ixgbe_mac_82598EB)
3197 pfvfspoof = IXGBE_SPOOF_MACAS_MASK;
3200 * PFVFSPOOF register array is size 8 with 8 bits assigned to
3201 * MAC anti-spoof enables in each register array element.
3203 for (j = 0; j < IXGBE_PFVFSPOOF_REG_COUNT; j++)
3204 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(j), pfvfspoof);
3206 /* If not enabling anti-spoofing then done */
3211 * The PF should be allowed to spoof so that it can support
3212 * emulation mode NICs. Reset the bit assigned to the PF
3214 pfvfspoof = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(pf_target_reg));
3215 pfvfspoof ^= (1 << pf_target_shift);
3216 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(pf_target_reg), pfvfspoof);
3220 * ixgbe_set_vlan_anti_spoofing - Enable/Disable VLAN anti-spoofing
3221 * @hw: pointer to hardware structure
3222 * @enable: enable or disable switch for VLAN anti-spoofing
3223 * @pf: Virtual Function pool - VF Pool to set for VLAN anti-spoofing
3226 void ixgbe_set_vlan_anti_spoofing(struct ixgbe_hw *hw, bool enable, int vf)
3228 int vf_target_reg = vf >> 3;
3229 int vf_target_shift = vf % 8 + IXGBE_SPOOF_VLANAS_SHIFT;
3232 if (hw->mac.type == ixgbe_mac_82598EB)
3235 pfvfspoof = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg));
3237 pfvfspoof |= (1 << vf_target_shift);
3239 pfvfspoof &= ~(1 << vf_target_shift);
3240 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), pfvfspoof);
3244 * ixgbe_get_device_caps_generic - Get additional device capabilities
3245 * @hw: pointer to hardware structure
3246 * @device_caps: the EEPROM word with the extra device capabilities
3248 * This function will read the EEPROM location for the device capabilities,
3249 * and return the word through device_caps.
3251 s32 ixgbe_get_device_caps_generic(struct ixgbe_hw *hw, u16 *device_caps)
3253 hw->eeprom.ops.read(hw, IXGBE_DEVICE_CAPS, device_caps);
3259 * ixgbe_set_rxpba_generic - Initialize RX packet buffer
3260 * @hw: pointer to hardware structure
3261 * @num_pb: number of packet buffers to allocate
3262 * @headroom: reserve n KB of headroom
3263 * @strategy: packet buffer allocation strategy
3265 void ixgbe_set_rxpba_generic(struct ixgbe_hw *hw,
3270 u32 pbsize = hw->mac.rx_pb_size;
3272 u32 rxpktsize, txpktsize, txpbthresh;
3274 /* Reserve headroom */
3280 /* Divide remaining packet buffer space amongst the number
3281 * of packet buffers requested using supplied strategy.
3284 case (PBA_STRATEGY_WEIGHTED):
3285 /* pba_80_48 strategy weight first half of packet buffer with
3286 * 5/8 of the packet buffer space.
3288 rxpktsize = ((pbsize * 5 * 2) / (num_pb * 8));
3289 pbsize -= rxpktsize * (num_pb / 2);
3290 rxpktsize <<= IXGBE_RXPBSIZE_SHIFT;
3291 for (; i < (num_pb / 2); i++)
3292 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpktsize);
3293 /* Fall through to configure remaining packet buffers */
3294 case (PBA_STRATEGY_EQUAL):
3295 /* Divide the remaining Rx packet buffer evenly among the TCs */
3296 rxpktsize = (pbsize / (num_pb - i)) << IXGBE_RXPBSIZE_SHIFT;
3297 for (; i < num_pb; i++)
3298 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpktsize);
3305 * Setup Tx packet buffer and threshold equally for all TCs
3306 * TXPBTHRESH register is set in K so divide by 1024 and subtract
3307 * 10 since the largest packet we support is just over 9K.
3309 txpktsize = IXGBE_TXPBSIZE_MAX / num_pb;
3310 txpbthresh = (txpktsize / 1024) - IXGBE_TXPKT_SIZE_MAX;
3311 for (i = 0; i < num_pb; i++) {
3312 IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), txpktsize);
3313 IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), txpbthresh);
3316 /* Clear unused TCs, if any, to zero buffer size*/
3317 for (; i < IXGBE_MAX_PB; i++) {
3318 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), 0);
3319 IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), 0);
3320 IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), 0);
3325 * ixgbe_calculate_checksum - Calculate checksum for buffer
3326 * @buffer: pointer to EEPROM
3327 * @length: size of EEPROM to calculate a checksum for
3329 * Calculates the checksum for some buffer on a specified length. The
3330 * checksum calculated is returned.
3332 static u8 ixgbe_calculate_checksum(u8 *buffer, u32 length)
3340 for (i = 0; i < length; i++)
3343 return (u8) (0 - sum);
3347 * ixgbe_host_interface_command - Issue command to manageability block
3348 * @hw: pointer to the HW structure
3349 * @buffer: contains the command to write and where the return status will
3351 * @length: length of buffer, must be multiple of 4 bytes
3353 * Communicates with the manageability block. On success return 0
3354 * else return IXGBE_ERR_HOST_INTERFACE_COMMAND.
3356 static s32 ixgbe_host_interface_command(struct ixgbe_hw *hw, u32 *buffer,
3360 u32 hdr_size = sizeof(struct ixgbe_hic_hdr);
3361 u8 buf_len, dword_len;
3365 if (length == 0 || length & 0x3 ||
3366 length > IXGBE_HI_MAX_BLOCK_BYTE_LENGTH) {
3367 hw_dbg(hw, "Buffer length failure.\n");
3368 ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND;
3372 /* Check that the host interface is enabled. */
3373 hicr = IXGBE_READ_REG(hw, IXGBE_HICR);
3374 if ((hicr & IXGBE_HICR_EN) == 0) {
3375 hw_dbg(hw, "IXGBE_HOST_EN bit disabled.\n");
3376 ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND;
3380 /* Calculate length in DWORDs */
3381 dword_len = length >> 2;
3384 * The device driver writes the relevant command block
3385 * into the ram area.
3387 for (i = 0; i < dword_len; i++)
3388 IXGBE_WRITE_REG_ARRAY(hw, IXGBE_FLEX_MNG,
3389 i, cpu_to_le32(buffer[i]));
3391 /* Setting this bit tells the ARC that a new command is pending. */
3392 IXGBE_WRITE_REG(hw, IXGBE_HICR, hicr | IXGBE_HICR_C);
3394 for (i = 0; i < IXGBE_HI_COMMAND_TIMEOUT; i++) {
3395 hicr = IXGBE_READ_REG(hw, IXGBE_HICR);
3396 if (!(hicr & IXGBE_HICR_C))
3398 usleep_range(1000, 2000);
3401 /* Check command successful completion. */
3402 if (i == IXGBE_HI_COMMAND_TIMEOUT ||
3403 (!(IXGBE_READ_REG(hw, IXGBE_HICR) & IXGBE_HICR_SV))) {
3404 hw_dbg(hw, "Command has failed with no status valid.\n");
3405 ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND;
3409 /* Calculate length in DWORDs */
3410 dword_len = hdr_size >> 2;
3412 /* first pull in the header so we know the buffer length */
3413 for (bi = 0; bi < dword_len; bi++) {
3414 buffer[bi] = IXGBE_READ_REG_ARRAY(hw, IXGBE_FLEX_MNG, bi);
3415 le32_to_cpus(&buffer[bi]);
3418 /* If there is any thing in data position pull it in */
3419 buf_len = ((struct ixgbe_hic_hdr *)buffer)->buf_len;
3423 if (length < (buf_len + hdr_size)) {
3424 hw_dbg(hw, "Buffer not large enough for reply message.\n");
3425 ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND;
3429 /* Calculate length in DWORDs, add 3 for odd lengths */
3430 dword_len = (buf_len + 3) >> 2;
3432 /* Pull in the rest of the buffer (bi is where we left off)*/
3433 for (; bi <= dword_len; bi++) {
3434 buffer[bi] = IXGBE_READ_REG_ARRAY(hw, IXGBE_FLEX_MNG, bi);
3435 le32_to_cpus(&buffer[bi]);
3443 * ixgbe_set_fw_drv_ver_generic - Sends driver version to firmware
3444 * @hw: pointer to the HW structure
3445 * @maj: driver version major number
3446 * @min: driver version minor number
3447 * @build: driver version build number
3448 * @sub: driver version sub build number
3450 * Sends driver version number to firmware through the manageability
3451 * block. On success return 0
3452 * else returns IXGBE_ERR_SWFW_SYNC when encountering an error acquiring
3453 * semaphore or IXGBE_ERR_HOST_INTERFACE_COMMAND when command fails.
3455 s32 ixgbe_set_fw_drv_ver_generic(struct ixgbe_hw *hw, u8 maj, u8 min,
3458 struct ixgbe_hic_drv_info fw_cmd;
3462 if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_SW_MNG_SM) != 0) {
3463 ret_val = IXGBE_ERR_SWFW_SYNC;
3467 fw_cmd.hdr.cmd = FW_CEM_CMD_DRIVER_INFO;
3468 fw_cmd.hdr.buf_len = FW_CEM_CMD_DRIVER_INFO_LEN;
3469 fw_cmd.hdr.cmd_or_resp.cmd_resv = FW_CEM_CMD_RESERVED;
3470 fw_cmd.port_num = (u8)hw->bus.func;
3471 fw_cmd.ver_maj = maj;
3472 fw_cmd.ver_min = min;
3473 fw_cmd.ver_build = build;
3474 fw_cmd.ver_sub = sub;
3475 fw_cmd.hdr.checksum = 0;
3476 fw_cmd.hdr.checksum = ixgbe_calculate_checksum((u8 *)&fw_cmd,
3477 (FW_CEM_HDR_LEN + fw_cmd.hdr.buf_len));
3481 for (i = 0; i <= FW_CEM_MAX_RETRIES; i++) {
3482 ret_val = ixgbe_host_interface_command(hw, (u32 *)&fw_cmd,
3487 if (fw_cmd.hdr.cmd_or_resp.ret_status ==
3488 FW_CEM_RESP_STATUS_SUCCESS)
3491 ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND;
3496 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_SW_MNG_SM);
3502 * ixgbe_clear_tx_pending - Clear pending TX work from the PCIe fifo
3503 * @hw: pointer to the hardware structure
3505 * The 82599 and x540 MACs can experience issues if TX work is still pending
3506 * when a reset occurs. This function prevents this by flushing the PCIe
3507 * buffers on the system.
3509 void ixgbe_clear_tx_pending(struct ixgbe_hw *hw)
3511 u32 gcr_ext, hlreg0;
3514 * If double reset is not requested then all transactions should
3515 * already be clear and as such there is no work to do
3517 if (!(hw->mac.flags & IXGBE_FLAGS_DOUBLE_RESET_REQUIRED))
3521 * Set loopback enable to prevent any transmits from being sent
3522 * should the link come up. This assumes that the RXCTRL.RXEN bit
3523 * has already been cleared.
3525 hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0);
3526 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0 | IXGBE_HLREG0_LPBK);
3528 /* initiate cleaning flow for buffers in the PCIe transaction layer */
3529 gcr_ext = IXGBE_READ_REG(hw, IXGBE_GCR_EXT);
3530 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT,
3531 gcr_ext | IXGBE_GCR_EXT_BUFFERS_CLEAR);
3533 /* Flush all writes and allow 20usec for all transactions to clear */
3534 IXGBE_WRITE_FLUSH(hw);
3537 /* restore previous register values */
3538 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, gcr_ext);
3539 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0);
3542 static const u8 ixgbe_emc_temp_data[4] = {
3543 IXGBE_EMC_INTERNAL_DATA,
3544 IXGBE_EMC_DIODE1_DATA,
3545 IXGBE_EMC_DIODE2_DATA,
3546 IXGBE_EMC_DIODE3_DATA
3548 static const u8 ixgbe_emc_therm_limit[4] = {
3549 IXGBE_EMC_INTERNAL_THERM_LIMIT,
3550 IXGBE_EMC_DIODE1_THERM_LIMIT,
3551 IXGBE_EMC_DIODE2_THERM_LIMIT,
3552 IXGBE_EMC_DIODE3_THERM_LIMIT
3556 * ixgbe_get_ets_data - Extracts the ETS bit data
3557 * @hw: pointer to hardware structure
3558 * @ets_cfg: extected ETS data
3559 * @ets_offset: offset of ETS data
3561 * Returns error code.
3563 static s32 ixgbe_get_ets_data(struct ixgbe_hw *hw, u16 *ets_cfg,
3568 status = hw->eeprom.ops.read(hw, IXGBE_ETS_CFG, ets_offset);
3572 if ((*ets_offset == 0x0000) || (*ets_offset == 0xFFFF)) {
3573 status = IXGBE_NOT_IMPLEMENTED;
3577 status = hw->eeprom.ops.read(hw, *ets_offset, ets_cfg);
3581 if ((*ets_cfg & IXGBE_ETS_TYPE_MASK) != IXGBE_ETS_TYPE_EMC_SHIFTED) {
3582 status = IXGBE_NOT_IMPLEMENTED;
3591 * ixgbe_get_thermal_sensor_data - Gathers thermal sensor data
3592 * @hw: pointer to hardware structure
3594 * Returns the thermal sensor data structure
3596 s32 ixgbe_get_thermal_sensor_data_generic(struct ixgbe_hw *hw)
3604 struct ixgbe_thermal_sensor_data *data = &hw->mac.thermal_sensor_data;
3606 /* Only support thermal sensors attached to physical port 0 */
3607 if ((IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1)) {
3608 status = IXGBE_NOT_IMPLEMENTED;
3612 status = ixgbe_get_ets_data(hw, &ets_cfg, &ets_offset);
3616 num_sensors = (ets_cfg & IXGBE_ETS_NUM_SENSORS_MASK);
3617 if (num_sensors > IXGBE_MAX_SENSORS)
3618 num_sensors = IXGBE_MAX_SENSORS;
3620 for (i = 0; i < num_sensors; i++) {
3624 status = hw->eeprom.ops.read(hw, (ets_offset + 1 + i),
3629 sensor_index = ((ets_sensor & IXGBE_ETS_DATA_INDEX_MASK) >>
3630 IXGBE_ETS_DATA_INDEX_SHIFT);
3631 sensor_location = ((ets_sensor & IXGBE_ETS_DATA_LOC_MASK) >>
3632 IXGBE_ETS_DATA_LOC_SHIFT);
3634 if (sensor_location != 0) {
3635 status = hw->phy.ops.read_i2c_byte(hw,
3636 ixgbe_emc_temp_data[sensor_index],
3637 IXGBE_I2C_THERMAL_SENSOR_ADDR,
3638 &data->sensor[i].temp);
3648 * ixgbe_init_thermal_sensor_thresh_generic - Inits thermal sensor thresholds
3649 * @hw: pointer to hardware structure
3651 * Inits the thermal sensor thresholds according to the NVM map
3652 * and save off the threshold and location values into mac.thermal_sensor_data
3654 s32 ixgbe_init_thermal_sensor_thresh_generic(struct ixgbe_hw *hw)
3660 u8 low_thresh_delta;
3664 struct ixgbe_thermal_sensor_data *data = &hw->mac.thermal_sensor_data;
3666 memset(data, 0, sizeof(struct ixgbe_thermal_sensor_data));
3668 /* Only support thermal sensors attached to physical port 0 */
3669 if ((IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1)) {
3670 status = IXGBE_NOT_IMPLEMENTED;
3674 status = ixgbe_get_ets_data(hw, &ets_cfg, &ets_offset);
3678 low_thresh_delta = ((ets_cfg & IXGBE_ETS_LTHRES_DELTA_MASK) >>
3679 IXGBE_ETS_LTHRES_DELTA_SHIFT);
3680 num_sensors = (ets_cfg & IXGBE_ETS_NUM_SENSORS_MASK);
3681 if (num_sensors > IXGBE_MAX_SENSORS)
3682 num_sensors = IXGBE_MAX_SENSORS;
3684 for (i = 0; i < num_sensors; i++) {
3688 hw->eeprom.ops.read(hw, (ets_offset + 1 + i), &ets_sensor);
3689 sensor_index = ((ets_sensor & IXGBE_ETS_DATA_INDEX_MASK) >>
3690 IXGBE_ETS_DATA_INDEX_SHIFT);
3691 sensor_location = ((ets_sensor & IXGBE_ETS_DATA_LOC_MASK) >>
3692 IXGBE_ETS_DATA_LOC_SHIFT);
3693 therm_limit = ets_sensor & IXGBE_ETS_DATA_HTHRESH_MASK;
3695 hw->phy.ops.write_i2c_byte(hw,
3696 ixgbe_emc_therm_limit[sensor_index],
3697 IXGBE_I2C_THERMAL_SENSOR_ADDR, therm_limit);
3699 if (sensor_location == 0)
3702 data->sensor[i].location = sensor_location;
3703 data->sensor[i].caution_thresh = therm_limit;
3704 data->sensor[i].max_op_thresh = therm_limit - low_thresh_delta;