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 s32 ixgbe_device_supports_autoneg_fc(struct ixgbe_hw *hw)
71 switch (hw->device_id) {
72 case IXGBE_DEV_ID_X540T:
73 case IXGBE_DEV_ID_X540T1:
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;
92 bool got_lock = false;
95 * Validate the requested mode. Strict IEEE mode does not allow
96 * ixgbe_fc_rx_pause because it will cause us to fail at UNH.
98 if (hw->fc.strict_ieee && hw->fc.requested_mode == ixgbe_fc_rx_pause) {
99 hw_dbg(hw, "ixgbe_fc_rx_pause not valid in strict IEEE mode\n");
100 ret_val = IXGBE_ERR_INVALID_LINK_SETTINGS;
105 * 10gig parts do not have a word in the EEPROM to determine the
106 * default flow control setting, so we explicitly set it to full.
108 if (hw->fc.requested_mode == ixgbe_fc_default)
109 hw->fc.requested_mode = ixgbe_fc_full;
112 * Set up the 1G and 10G flow control advertisement registers so the
113 * HW will be able to do fc autoneg once the cable is plugged in. If
114 * we link at 10G, the 1G advertisement is harmless and vice versa.
116 switch (hw->phy.media_type) {
117 case ixgbe_media_type_fiber:
118 case ixgbe_media_type_backplane:
119 reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANA);
120 reg_bp = IXGBE_READ_REG(hw, IXGBE_AUTOC);
122 case ixgbe_media_type_copper:
123 hw->phy.ops.read_reg(hw, MDIO_AN_ADVERTISE,
124 MDIO_MMD_AN, ®_cu);
131 * The possible values of fc.requested_mode are:
132 * 0: Flow control is completely disabled
133 * 1: Rx flow control is enabled (we can receive pause frames,
134 * but not send pause frames).
135 * 2: Tx flow control is enabled (we can send pause frames but
136 * we do not support receiving pause frames).
137 * 3: Both Rx and Tx flow control (symmetric) are enabled.
140 switch (hw->fc.requested_mode) {
142 /* Flow control completely disabled by software override. */
143 reg &= ~(IXGBE_PCS1GANA_SYM_PAUSE | IXGBE_PCS1GANA_ASM_PAUSE);
144 if (hw->phy.media_type == ixgbe_media_type_backplane)
145 reg_bp &= ~(IXGBE_AUTOC_SYM_PAUSE |
146 IXGBE_AUTOC_ASM_PAUSE);
147 else if (hw->phy.media_type == ixgbe_media_type_copper)
148 reg_cu &= ~(IXGBE_TAF_SYM_PAUSE | IXGBE_TAF_ASM_PAUSE);
150 case ixgbe_fc_tx_pause:
152 * Tx Flow control is enabled, and Rx Flow control is
153 * disabled by software override.
155 reg |= IXGBE_PCS1GANA_ASM_PAUSE;
156 reg &= ~IXGBE_PCS1GANA_SYM_PAUSE;
157 if (hw->phy.media_type == ixgbe_media_type_backplane) {
158 reg_bp |= IXGBE_AUTOC_ASM_PAUSE;
159 reg_bp &= ~IXGBE_AUTOC_SYM_PAUSE;
160 } else if (hw->phy.media_type == ixgbe_media_type_copper) {
161 reg_cu |= IXGBE_TAF_ASM_PAUSE;
162 reg_cu &= ~IXGBE_TAF_SYM_PAUSE;
165 case ixgbe_fc_rx_pause:
167 * Rx Flow control is enabled and Tx Flow control is
168 * disabled by software override. Since there really
169 * isn't a way to advertise that we are capable of RX
170 * Pause ONLY, we will advertise that we support both
171 * symmetric and asymmetric Rx PAUSE, as such we fall
172 * through to the fc_full statement. Later, we will
173 * disable the adapter's ability to send PAUSE frames.
176 /* Flow control (both Rx and Tx) is enabled by SW override. */
177 reg |= IXGBE_PCS1GANA_SYM_PAUSE | IXGBE_PCS1GANA_ASM_PAUSE;
178 if (hw->phy.media_type == ixgbe_media_type_backplane)
179 reg_bp |= IXGBE_AUTOC_SYM_PAUSE |
180 IXGBE_AUTOC_ASM_PAUSE;
181 else if (hw->phy.media_type == ixgbe_media_type_copper)
182 reg_cu |= IXGBE_TAF_SYM_PAUSE | IXGBE_TAF_ASM_PAUSE;
185 hw_dbg(hw, "Flow control param set incorrectly\n");
186 ret_val = IXGBE_ERR_CONFIG;
191 if (hw->mac.type != ixgbe_mac_X540) {
193 * Enable auto-negotiation between the MAC & PHY;
194 * the MAC will advertise clause 37 flow control.
196 IXGBE_WRITE_REG(hw, IXGBE_PCS1GANA, reg);
197 reg = IXGBE_READ_REG(hw, IXGBE_PCS1GLCTL);
199 /* Disable AN timeout */
200 if (hw->fc.strict_ieee)
201 reg &= ~IXGBE_PCS1GLCTL_AN_1G_TIMEOUT_EN;
203 IXGBE_WRITE_REG(hw, IXGBE_PCS1GLCTL, reg);
204 hw_dbg(hw, "Set up FC; PCS1GLCTL = 0x%08X\n", reg);
208 * AUTOC restart handles negotiation of 1G and 10G on backplane
209 * and copper. There is no need to set the PCS1GCTL register.
212 if (hw->phy.media_type == ixgbe_media_type_backplane) {
213 /* Need the SW/FW semaphore around AUTOC writes if 82599 and
214 * LESM is on, likewise reset_pipeline requries the lock as
215 * it also writes AUTOC.
217 if ((hw->mac.type == ixgbe_mac_82599EB) &&
218 ixgbe_verify_lesm_fw_enabled_82599(hw)) {
219 ret_val = hw->mac.ops.acquire_swfw_sync(hw,
220 IXGBE_GSSR_MAC_CSR_SM);
227 IXGBE_WRITE_REG(hw, IXGBE_AUTOC, reg_bp);
229 if (hw->mac.type == ixgbe_mac_82599EB)
230 ixgbe_reset_pipeline_82599(hw);
233 hw->mac.ops.release_swfw_sync(hw,
234 IXGBE_GSSR_MAC_CSR_SM);
236 } else if ((hw->phy.media_type == ixgbe_media_type_copper) &&
237 (ixgbe_device_supports_autoneg_fc(hw) == 0)) {
238 hw->phy.ops.write_reg(hw, MDIO_AN_ADVERTISE,
239 MDIO_MMD_AN, reg_cu);
242 hw_dbg(hw, "Set up FC; IXGBE_AUTOC = 0x%08X\n", reg);
248 * ixgbe_start_hw_generic - Prepare hardware for Tx/Rx
249 * @hw: pointer to hardware structure
251 * Starts the hardware by filling the bus info structure and media type, clears
252 * all on chip counters, initializes receive address registers, multicast
253 * table, VLAN filter table, calls routine to set up link and flow control
254 * settings, and leaves transmit and receive units disabled and uninitialized
256 s32 ixgbe_start_hw_generic(struct ixgbe_hw *hw)
260 /* Set the media type */
261 hw->phy.media_type = hw->mac.ops.get_media_type(hw);
263 /* Identify the PHY */
264 hw->phy.ops.identify(hw);
266 /* Clear the VLAN filter table */
267 hw->mac.ops.clear_vfta(hw);
269 /* Clear statistics registers */
270 hw->mac.ops.clear_hw_cntrs(hw);
272 /* Set No Snoop Disable */
273 ctrl_ext = IXGBE_READ_REG(hw, IXGBE_CTRL_EXT);
274 ctrl_ext |= IXGBE_CTRL_EXT_NS_DIS;
275 IXGBE_WRITE_REG(hw, IXGBE_CTRL_EXT, ctrl_ext);
276 IXGBE_WRITE_FLUSH(hw);
278 /* Setup flow control */
281 /* Clear adapter stopped flag */
282 hw->adapter_stopped = false;
288 * ixgbe_start_hw_gen2 - Init sequence for common device family
289 * @hw: pointer to hw structure
291 * Performs the init sequence common to the second generation
293 * Devices in the second generation:
297 s32 ixgbe_start_hw_gen2(struct ixgbe_hw *hw)
302 /* Clear the rate limiters */
303 for (i = 0; i < hw->mac.max_tx_queues; i++) {
304 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, i);
305 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, 0);
307 IXGBE_WRITE_FLUSH(hw);
309 /* Disable relaxed ordering */
310 for (i = 0; i < hw->mac.max_tx_queues; i++) {
311 regval = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL_82599(i));
312 regval &= ~IXGBE_DCA_TXCTRL_DESC_WRO_EN;
313 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL_82599(i), regval);
316 for (i = 0; i < hw->mac.max_rx_queues; i++) {
317 regval = IXGBE_READ_REG(hw, IXGBE_DCA_RXCTRL(i));
318 regval &= ~(IXGBE_DCA_RXCTRL_DATA_WRO_EN |
319 IXGBE_DCA_RXCTRL_HEAD_WRO_EN);
320 IXGBE_WRITE_REG(hw, IXGBE_DCA_RXCTRL(i), regval);
327 * ixgbe_init_hw_generic - Generic hardware initialization
328 * @hw: pointer to hardware structure
330 * Initialize the hardware by resetting the hardware, filling the bus info
331 * structure and media type, clears all on chip counters, initializes receive
332 * address registers, multicast table, VLAN filter table, calls routine to set
333 * up link and flow control settings, and leaves transmit and receive units
334 * disabled and uninitialized
336 s32 ixgbe_init_hw_generic(struct ixgbe_hw *hw)
340 /* Reset the hardware */
341 status = hw->mac.ops.reset_hw(hw);
345 status = hw->mac.ops.start_hw(hw);
352 * ixgbe_clear_hw_cntrs_generic - Generic clear hardware counters
353 * @hw: pointer to hardware structure
355 * Clears all hardware statistics counters by reading them from the hardware
356 * Statistics counters are clear on read.
358 s32 ixgbe_clear_hw_cntrs_generic(struct ixgbe_hw *hw)
362 IXGBE_READ_REG(hw, IXGBE_CRCERRS);
363 IXGBE_READ_REG(hw, IXGBE_ILLERRC);
364 IXGBE_READ_REG(hw, IXGBE_ERRBC);
365 IXGBE_READ_REG(hw, IXGBE_MSPDC);
366 for (i = 0; i < 8; i++)
367 IXGBE_READ_REG(hw, IXGBE_MPC(i));
369 IXGBE_READ_REG(hw, IXGBE_MLFC);
370 IXGBE_READ_REG(hw, IXGBE_MRFC);
371 IXGBE_READ_REG(hw, IXGBE_RLEC);
372 IXGBE_READ_REG(hw, IXGBE_LXONTXC);
373 IXGBE_READ_REG(hw, IXGBE_LXOFFTXC);
374 if (hw->mac.type >= ixgbe_mac_82599EB) {
375 IXGBE_READ_REG(hw, IXGBE_LXONRXCNT);
376 IXGBE_READ_REG(hw, IXGBE_LXOFFRXCNT);
378 IXGBE_READ_REG(hw, IXGBE_LXONRXC);
379 IXGBE_READ_REG(hw, IXGBE_LXOFFRXC);
382 for (i = 0; i < 8; i++) {
383 IXGBE_READ_REG(hw, IXGBE_PXONTXC(i));
384 IXGBE_READ_REG(hw, IXGBE_PXOFFTXC(i));
385 if (hw->mac.type >= ixgbe_mac_82599EB) {
386 IXGBE_READ_REG(hw, IXGBE_PXONRXCNT(i));
387 IXGBE_READ_REG(hw, IXGBE_PXOFFRXCNT(i));
389 IXGBE_READ_REG(hw, IXGBE_PXONRXC(i));
390 IXGBE_READ_REG(hw, IXGBE_PXOFFRXC(i));
393 if (hw->mac.type >= ixgbe_mac_82599EB)
394 for (i = 0; i < 8; i++)
395 IXGBE_READ_REG(hw, IXGBE_PXON2OFFCNT(i));
396 IXGBE_READ_REG(hw, IXGBE_PRC64);
397 IXGBE_READ_REG(hw, IXGBE_PRC127);
398 IXGBE_READ_REG(hw, IXGBE_PRC255);
399 IXGBE_READ_REG(hw, IXGBE_PRC511);
400 IXGBE_READ_REG(hw, IXGBE_PRC1023);
401 IXGBE_READ_REG(hw, IXGBE_PRC1522);
402 IXGBE_READ_REG(hw, IXGBE_GPRC);
403 IXGBE_READ_REG(hw, IXGBE_BPRC);
404 IXGBE_READ_REG(hw, IXGBE_MPRC);
405 IXGBE_READ_REG(hw, IXGBE_GPTC);
406 IXGBE_READ_REG(hw, IXGBE_GORCL);
407 IXGBE_READ_REG(hw, IXGBE_GORCH);
408 IXGBE_READ_REG(hw, IXGBE_GOTCL);
409 IXGBE_READ_REG(hw, IXGBE_GOTCH);
410 if (hw->mac.type == ixgbe_mac_82598EB)
411 for (i = 0; i < 8; i++)
412 IXGBE_READ_REG(hw, IXGBE_RNBC(i));
413 IXGBE_READ_REG(hw, IXGBE_RUC);
414 IXGBE_READ_REG(hw, IXGBE_RFC);
415 IXGBE_READ_REG(hw, IXGBE_ROC);
416 IXGBE_READ_REG(hw, IXGBE_RJC);
417 IXGBE_READ_REG(hw, IXGBE_MNGPRC);
418 IXGBE_READ_REG(hw, IXGBE_MNGPDC);
419 IXGBE_READ_REG(hw, IXGBE_MNGPTC);
420 IXGBE_READ_REG(hw, IXGBE_TORL);
421 IXGBE_READ_REG(hw, IXGBE_TORH);
422 IXGBE_READ_REG(hw, IXGBE_TPR);
423 IXGBE_READ_REG(hw, IXGBE_TPT);
424 IXGBE_READ_REG(hw, IXGBE_PTC64);
425 IXGBE_READ_REG(hw, IXGBE_PTC127);
426 IXGBE_READ_REG(hw, IXGBE_PTC255);
427 IXGBE_READ_REG(hw, IXGBE_PTC511);
428 IXGBE_READ_REG(hw, IXGBE_PTC1023);
429 IXGBE_READ_REG(hw, IXGBE_PTC1522);
430 IXGBE_READ_REG(hw, IXGBE_MPTC);
431 IXGBE_READ_REG(hw, IXGBE_BPTC);
432 for (i = 0; i < 16; i++) {
433 IXGBE_READ_REG(hw, IXGBE_QPRC(i));
434 IXGBE_READ_REG(hw, IXGBE_QPTC(i));
435 if (hw->mac.type >= ixgbe_mac_82599EB) {
436 IXGBE_READ_REG(hw, IXGBE_QBRC_L(i));
437 IXGBE_READ_REG(hw, IXGBE_QBRC_H(i));
438 IXGBE_READ_REG(hw, IXGBE_QBTC_L(i));
439 IXGBE_READ_REG(hw, IXGBE_QBTC_H(i));
440 IXGBE_READ_REG(hw, IXGBE_QPRDC(i));
442 IXGBE_READ_REG(hw, IXGBE_QBRC(i));
443 IXGBE_READ_REG(hw, IXGBE_QBTC(i));
447 if (hw->mac.type == ixgbe_mac_X540) {
449 hw->phy.ops.identify(hw);
450 hw->phy.ops.read_reg(hw, IXGBE_PCRC8ECL, MDIO_MMD_PCS, &i);
451 hw->phy.ops.read_reg(hw, IXGBE_PCRC8ECH, MDIO_MMD_PCS, &i);
452 hw->phy.ops.read_reg(hw, IXGBE_LDPCECL, MDIO_MMD_PCS, &i);
453 hw->phy.ops.read_reg(hw, IXGBE_LDPCECH, MDIO_MMD_PCS, &i);
460 * ixgbe_read_pba_string_generic - Reads part number string from EEPROM
461 * @hw: pointer to hardware structure
462 * @pba_num: stores the part number string from the EEPROM
463 * @pba_num_size: part number string buffer length
465 * Reads the part number string from the EEPROM.
467 s32 ixgbe_read_pba_string_generic(struct ixgbe_hw *hw, u8 *pba_num,
476 if (pba_num == NULL) {
477 hw_dbg(hw, "PBA string buffer was null\n");
478 return IXGBE_ERR_INVALID_ARGUMENT;
481 ret_val = hw->eeprom.ops.read(hw, IXGBE_PBANUM0_PTR, &data);
483 hw_dbg(hw, "NVM Read Error\n");
487 ret_val = hw->eeprom.ops.read(hw, IXGBE_PBANUM1_PTR, &pba_ptr);
489 hw_dbg(hw, "NVM Read Error\n");
494 * if data is not ptr guard the PBA must be in legacy format which
495 * means pba_ptr is actually our second data word for the PBA number
496 * and we can decode it into an ascii string
498 if (data != IXGBE_PBANUM_PTR_GUARD) {
499 hw_dbg(hw, "NVM PBA number is not stored as string\n");
501 /* we will need 11 characters to store the PBA */
502 if (pba_num_size < 11) {
503 hw_dbg(hw, "PBA string buffer too small\n");
504 return IXGBE_ERR_NO_SPACE;
507 /* extract hex string from data and pba_ptr */
508 pba_num[0] = (data >> 12) & 0xF;
509 pba_num[1] = (data >> 8) & 0xF;
510 pba_num[2] = (data >> 4) & 0xF;
511 pba_num[3] = data & 0xF;
512 pba_num[4] = (pba_ptr >> 12) & 0xF;
513 pba_num[5] = (pba_ptr >> 8) & 0xF;
516 pba_num[8] = (pba_ptr >> 4) & 0xF;
517 pba_num[9] = pba_ptr & 0xF;
519 /* put a null character on the end of our string */
522 /* switch all the data but the '-' to hex char */
523 for (offset = 0; offset < 10; offset++) {
524 if (pba_num[offset] < 0xA)
525 pba_num[offset] += '0';
526 else if (pba_num[offset] < 0x10)
527 pba_num[offset] += 'A' - 0xA;
533 ret_val = hw->eeprom.ops.read(hw, pba_ptr, &length);
535 hw_dbg(hw, "NVM Read Error\n");
539 if (length == 0xFFFF || length == 0) {
540 hw_dbg(hw, "NVM PBA number section invalid length\n");
541 return IXGBE_ERR_PBA_SECTION;
544 /* check if pba_num buffer is big enough */
545 if (pba_num_size < (((u32)length * 2) - 1)) {
546 hw_dbg(hw, "PBA string buffer too small\n");
547 return IXGBE_ERR_NO_SPACE;
550 /* trim pba length from start of string */
554 for (offset = 0; offset < length; offset++) {
555 ret_val = hw->eeprom.ops.read(hw, pba_ptr + offset, &data);
557 hw_dbg(hw, "NVM Read Error\n");
560 pba_num[offset * 2] = (u8)(data >> 8);
561 pba_num[(offset * 2) + 1] = (u8)(data & 0xFF);
563 pba_num[offset * 2] = '\0';
569 * ixgbe_get_mac_addr_generic - Generic get MAC address
570 * @hw: pointer to hardware structure
571 * @mac_addr: Adapter MAC address
573 * Reads the adapter's MAC address from first Receive Address Register (RAR0)
574 * A reset of the adapter must be performed prior to calling this function
575 * in order for the MAC address to have been loaded from the EEPROM into RAR0
577 s32 ixgbe_get_mac_addr_generic(struct ixgbe_hw *hw, u8 *mac_addr)
583 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(0));
584 rar_low = IXGBE_READ_REG(hw, IXGBE_RAL(0));
586 for (i = 0; i < 4; i++)
587 mac_addr[i] = (u8)(rar_low >> (i*8));
589 for (i = 0; i < 2; i++)
590 mac_addr[i+4] = (u8)(rar_high >> (i*8));
596 * ixgbe_get_bus_info_generic - Generic set PCI bus info
597 * @hw: pointer to hardware structure
599 * Sets the PCI bus info (speed, width, type) within the ixgbe_hw structure
601 s32 ixgbe_get_bus_info_generic(struct ixgbe_hw *hw)
603 struct ixgbe_adapter *adapter = hw->back;
604 struct ixgbe_mac_info *mac = &hw->mac;
607 hw->bus.type = ixgbe_bus_type_pci_express;
609 /* Get the negotiated link width and speed from PCI config space */
610 pci_read_config_word(adapter->pdev, IXGBE_PCI_LINK_STATUS,
613 switch (link_status & IXGBE_PCI_LINK_WIDTH) {
614 case IXGBE_PCI_LINK_WIDTH_1:
615 hw->bus.width = ixgbe_bus_width_pcie_x1;
617 case IXGBE_PCI_LINK_WIDTH_2:
618 hw->bus.width = ixgbe_bus_width_pcie_x2;
620 case IXGBE_PCI_LINK_WIDTH_4:
621 hw->bus.width = ixgbe_bus_width_pcie_x4;
623 case IXGBE_PCI_LINK_WIDTH_8:
624 hw->bus.width = ixgbe_bus_width_pcie_x8;
627 hw->bus.width = ixgbe_bus_width_unknown;
631 switch (link_status & IXGBE_PCI_LINK_SPEED) {
632 case IXGBE_PCI_LINK_SPEED_2500:
633 hw->bus.speed = ixgbe_bus_speed_2500;
635 case IXGBE_PCI_LINK_SPEED_5000:
636 hw->bus.speed = ixgbe_bus_speed_5000;
639 hw->bus.speed = ixgbe_bus_speed_unknown;
643 mac->ops.set_lan_id(hw);
649 * ixgbe_set_lan_id_multi_port_pcie - Set LAN id for PCIe multiple port devices
650 * @hw: pointer to the HW structure
652 * Determines the LAN function id by reading memory-mapped registers
653 * and swaps the port value if requested.
655 void ixgbe_set_lan_id_multi_port_pcie(struct ixgbe_hw *hw)
657 struct ixgbe_bus_info *bus = &hw->bus;
660 reg = IXGBE_READ_REG(hw, IXGBE_STATUS);
661 bus->func = (reg & IXGBE_STATUS_LAN_ID) >> IXGBE_STATUS_LAN_ID_SHIFT;
662 bus->lan_id = bus->func;
664 /* check for a port swap */
665 reg = IXGBE_READ_REG(hw, IXGBE_FACTPS);
666 if (reg & IXGBE_FACTPS_LFS)
671 * ixgbe_stop_adapter_generic - Generic stop Tx/Rx units
672 * @hw: pointer to hardware structure
674 * Sets the adapter_stopped flag within ixgbe_hw struct. Clears interrupts,
675 * disables transmit and receive units. The adapter_stopped flag is used by
676 * the shared code and drivers to determine if the adapter is in a stopped
677 * state and should not touch the hardware.
679 s32 ixgbe_stop_adapter_generic(struct ixgbe_hw *hw)
685 * Set the adapter_stopped flag so other driver functions stop touching
688 hw->adapter_stopped = true;
690 /* Disable the receive unit */
691 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, 0);
693 /* Clear interrupt mask to stop interrupts from being generated */
694 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK);
696 /* Clear any pending interrupts, flush previous writes */
697 IXGBE_READ_REG(hw, IXGBE_EICR);
699 /* Disable the transmit unit. Each queue must be disabled. */
700 for (i = 0; i < hw->mac.max_tx_queues; i++)
701 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(i), IXGBE_TXDCTL_SWFLSH);
703 /* Disable the receive unit by stopping each queue */
704 for (i = 0; i < hw->mac.max_rx_queues; i++) {
705 reg_val = IXGBE_READ_REG(hw, IXGBE_RXDCTL(i));
706 reg_val &= ~IXGBE_RXDCTL_ENABLE;
707 reg_val |= IXGBE_RXDCTL_SWFLSH;
708 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(i), reg_val);
711 /* flush all queues disables */
712 IXGBE_WRITE_FLUSH(hw);
713 usleep_range(1000, 2000);
716 * Prevent the PCI-E bus from from hanging by disabling PCI-E master
717 * access and verify no pending requests
719 return ixgbe_disable_pcie_master(hw);
723 * ixgbe_led_on_generic - Turns on the software controllable LEDs.
724 * @hw: pointer to hardware structure
725 * @index: led number to turn on
727 s32 ixgbe_led_on_generic(struct ixgbe_hw *hw, u32 index)
729 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
731 /* To turn on the LED, set mode to ON. */
732 led_reg &= ~IXGBE_LED_MODE_MASK(index);
733 led_reg |= IXGBE_LED_ON << IXGBE_LED_MODE_SHIFT(index);
734 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
735 IXGBE_WRITE_FLUSH(hw);
741 * ixgbe_led_off_generic - Turns off the software controllable LEDs.
742 * @hw: pointer to hardware structure
743 * @index: led number to turn off
745 s32 ixgbe_led_off_generic(struct ixgbe_hw *hw, u32 index)
747 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
749 /* To turn off the LED, set mode to OFF. */
750 led_reg &= ~IXGBE_LED_MODE_MASK(index);
751 led_reg |= IXGBE_LED_OFF << IXGBE_LED_MODE_SHIFT(index);
752 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
753 IXGBE_WRITE_FLUSH(hw);
759 * ixgbe_init_eeprom_params_generic - Initialize EEPROM params
760 * @hw: pointer to hardware structure
762 * Initializes the EEPROM parameters ixgbe_eeprom_info within the
763 * ixgbe_hw struct in order to set up EEPROM access.
765 s32 ixgbe_init_eeprom_params_generic(struct ixgbe_hw *hw)
767 struct ixgbe_eeprom_info *eeprom = &hw->eeprom;
771 if (eeprom->type == ixgbe_eeprom_uninitialized) {
772 eeprom->type = ixgbe_eeprom_none;
773 /* Set default semaphore delay to 10ms which is a well
775 eeprom->semaphore_delay = 10;
776 /* Clear EEPROM page size, it will be initialized as needed */
777 eeprom->word_page_size = 0;
780 * Check for EEPROM present first.
781 * If not present leave as none
783 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
784 if (eec & IXGBE_EEC_PRES) {
785 eeprom->type = ixgbe_eeprom_spi;
788 * SPI EEPROM is assumed here. This code would need to
789 * change if a future EEPROM is not SPI.
791 eeprom_size = (u16)((eec & IXGBE_EEC_SIZE) >>
792 IXGBE_EEC_SIZE_SHIFT);
793 eeprom->word_size = 1 << (eeprom_size +
794 IXGBE_EEPROM_WORD_SIZE_SHIFT);
797 if (eec & IXGBE_EEC_ADDR_SIZE)
798 eeprom->address_bits = 16;
800 eeprom->address_bits = 8;
801 hw_dbg(hw, "Eeprom params: type = %d, size = %d, address bits: "
802 "%d\n", eeprom->type, eeprom->word_size,
803 eeprom->address_bits);
810 * ixgbe_write_eeprom_buffer_bit_bang_generic - Write EEPROM using bit-bang
811 * @hw: pointer to hardware structure
812 * @offset: offset within the EEPROM to write
813 * @words: number of words
814 * @data: 16 bit word(s) to write to EEPROM
816 * Reads 16 bit word(s) from EEPROM through bit-bang method
818 s32 ixgbe_write_eeprom_buffer_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
819 u16 words, u16 *data)
824 hw->eeprom.ops.init_params(hw);
827 status = IXGBE_ERR_INVALID_ARGUMENT;
831 if (offset + words > hw->eeprom.word_size) {
832 status = IXGBE_ERR_EEPROM;
837 * The EEPROM page size cannot be queried from the chip. We do lazy
838 * initialization. It is worth to do that when we write large buffer.
840 if ((hw->eeprom.word_page_size == 0) &&
841 (words > IXGBE_EEPROM_PAGE_SIZE_MAX))
842 ixgbe_detect_eeprom_page_size_generic(hw, offset);
845 * We cannot hold synchronization semaphores for too long
846 * to avoid other entity starvation. However it is more efficient
847 * to read in bursts than synchronizing access for each word.
849 for (i = 0; i < words; i += IXGBE_EEPROM_RD_BUFFER_MAX_COUNT) {
850 count = (words - i) / IXGBE_EEPROM_RD_BUFFER_MAX_COUNT > 0 ?
851 IXGBE_EEPROM_RD_BUFFER_MAX_COUNT : (words - i);
852 status = ixgbe_write_eeprom_buffer_bit_bang(hw, offset + i,
864 * ixgbe_write_eeprom_buffer_bit_bang - Writes 16 bit word(s) to EEPROM
865 * @hw: pointer to hardware structure
866 * @offset: offset within the EEPROM to be written to
867 * @words: number of word(s)
868 * @data: 16 bit word(s) to be written to the EEPROM
870 * If ixgbe_eeprom_update_checksum is not called after this function, the
871 * EEPROM will most likely contain an invalid checksum.
873 static s32 ixgbe_write_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset,
874 u16 words, u16 *data)
880 u8 write_opcode = IXGBE_EEPROM_WRITE_OPCODE_SPI;
882 /* Prepare the EEPROM for writing */
883 status = ixgbe_acquire_eeprom(hw);
886 if (ixgbe_ready_eeprom(hw) != 0) {
887 ixgbe_release_eeprom(hw);
888 status = IXGBE_ERR_EEPROM;
893 for (i = 0; i < words; i++) {
894 ixgbe_standby_eeprom(hw);
896 /* Send the WRITE ENABLE command (8 bit opcode ) */
897 ixgbe_shift_out_eeprom_bits(hw,
898 IXGBE_EEPROM_WREN_OPCODE_SPI,
899 IXGBE_EEPROM_OPCODE_BITS);
901 ixgbe_standby_eeprom(hw);
904 * Some SPI eeproms use the 8th address bit embedded
907 if ((hw->eeprom.address_bits == 8) &&
908 ((offset + i) >= 128))
909 write_opcode |= IXGBE_EEPROM_A8_OPCODE_SPI;
911 /* Send the Write command (8-bit opcode + addr) */
912 ixgbe_shift_out_eeprom_bits(hw, write_opcode,
913 IXGBE_EEPROM_OPCODE_BITS);
914 ixgbe_shift_out_eeprom_bits(hw, (u16)((offset + i) * 2),
915 hw->eeprom.address_bits);
917 page_size = hw->eeprom.word_page_size;
919 /* Send the data in burst via SPI*/
922 word = (word >> 8) | (word << 8);
923 ixgbe_shift_out_eeprom_bits(hw, word, 16);
928 /* do not wrap around page */
929 if (((offset + i) & (page_size - 1)) ==
932 } while (++i < words);
934 ixgbe_standby_eeprom(hw);
935 usleep_range(10000, 20000);
937 /* Done with writing - release the EEPROM */
938 ixgbe_release_eeprom(hw);
945 * ixgbe_write_eeprom_generic - Writes 16 bit value to EEPROM
946 * @hw: pointer to hardware structure
947 * @offset: offset within the EEPROM to be written to
948 * @data: 16 bit word to be written to the EEPROM
950 * If ixgbe_eeprom_update_checksum is not called after this function, the
951 * EEPROM will most likely contain an invalid checksum.
953 s32 ixgbe_write_eeprom_generic(struct ixgbe_hw *hw, u16 offset, u16 data)
957 hw->eeprom.ops.init_params(hw);
959 if (offset >= hw->eeprom.word_size) {
960 status = IXGBE_ERR_EEPROM;
964 status = ixgbe_write_eeprom_buffer_bit_bang(hw, offset, 1, &data);
971 * ixgbe_read_eeprom_buffer_bit_bang_generic - Read EEPROM using bit-bang
972 * @hw: pointer to hardware structure
973 * @offset: offset within the EEPROM to be read
974 * @words: number of word(s)
975 * @data: read 16 bit words(s) from EEPROM
977 * Reads 16 bit word(s) from EEPROM through bit-bang method
979 s32 ixgbe_read_eeprom_buffer_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
980 u16 words, u16 *data)
985 hw->eeprom.ops.init_params(hw);
988 status = IXGBE_ERR_INVALID_ARGUMENT;
992 if (offset + words > hw->eeprom.word_size) {
993 status = IXGBE_ERR_EEPROM;
998 * We cannot hold synchronization semaphores for too long
999 * to avoid other entity starvation. However it is more efficient
1000 * to read in bursts than synchronizing access for each word.
1002 for (i = 0; i < words; i += IXGBE_EEPROM_RD_BUFFER_MAX_COUNT) {
1003 count = (words - i) / IXGBE_EEPROM_RD_BUFFER_MAX_COUNT > 0 ?
1004 IXGBE_EEPROM_RD_BUFFER_MAX_COUNT : (words - i);
1006 status = ixgbe_read_eeprom_buffer_bit_bang(hw, offset + i,
1018 * ixgbe_read_eeprom_buffer_bit_bang - Read EEPROM using bit-bang
1019 * @hw: pointer to hardware structure
1020 * @offset: offset within the EEPROM to be read
1021 * @words: number of word(s)
1022 * @data: read 16 bit word(s) from EEPROM
1024 * Reads 16 bit word(s) from EEPROM through bit-bang method
1026 static s32 ixgbe_read_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset,
1027 u16 words, u16 *data)
1031 u8 read_opcode = IXGBE_EEPROM_READ_OPCODE_SPI;
1034 /* Prepare the EEPROM for reading */
1035 status = ixgbe_acquire_eeprom(hw);
1038 if (ixgbe_ready_eeprom(hw) != 0) {
1039 ixgbe_release_eeprom(hw);
1040 status = IXGBE_ERR_EEPROM;
1045 for (i = 0; i < words; i++) {
1046 ixgbe_standby_eeprom(hw);
1048 * Some SPI eeproms use the 8th address bit embedded
1051 if ((hw->eeprom.address_bits == 8) &&
1052 ((offset + i) >= 128))
1053 read_opcode |= IXGBE_EEPROM_A8_OPCODE_SPI;
1055 /* Send the READ command (opcode + addr) */
1056 ixgbe_shift_out_eeprom_bits(hw, read_opcode,
1057 IXGBE_EEPROM_OPCODE_BITS);
1058 ixgbe_shift_out_eeprom_bits(hw, (u16)((offset + i) * 2),
1059 hw->eeprom.address_bits);
1061 /* Read the data. */
1062 word_in = ixgbe_shift_in_eeprom_bits(hw, 16);
1063 data[i] = (word_in >> 8) | (word_in << 8);
1066 /* End this read operation */
1067 ixgbe_release_eeprom(hw);
1074 * ixgbe_read_eeprom_bit_bang_generic - Read EEPROM word using bit-bang
1075 * @hw: pointer to hardware structure
1076 * @offset: offset within the EEPROM to be read
1077 * @data: read 16 bit value from EEPROM
1079 * Reads 16 bit value from EEPROM through bit-bang method
1081 s32 ixgbe_read_eeprom_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
1086 hw->eeprom.ops.init_params(hw);
1088 if (offset >= hw->eeprom.word_size) {
1089 status = IXGBE_ERR_EEPROM;
1093 status = ixgbe_read_eeprom_buffer_bit_bang(hw, offset, 1, data);
1100 * ixgbe_read_eerd_buffer_generic - Read EEPROM word(s) using EERD
1101 * @hw: pointer to hardware structure
1102 * @offset: offset of word in the EEPROM to read
1103 * @words: number of word(s)
1104 * @data: 16 bit word(s) from the EEPROM
1106 * Reads a 16 bit word(s) from the EEPROM using the EERD register.
1108 s32 ixgbe_read_eerd_buffer_generic(struct ixgbe_hw *hw, u16 offset,
1109 u16 words, u16 *data)
1115 hw->eeprom.ops.init_params(hw);
1118 status = IXGBE_ERR_INVALID_ARGUMENT;
1122 if (offset >= hw->eeprom.word_size) {
1123 status = IXGBE_ERR_EEPROM;
1127 for (i = 0; i < words; i++) {
1128 eerd = ((offset + i) << IXGBE_EEPROM_RW_ADDR_SHIFT) +
1129 IXGBE_EEPROM_RW_REG_START;
1131 IXGBE_WRITE_REG(hw, IXGBE_EERD, eerd);
1132 status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_READ);
1135 data[i] = (IXGBE_READ_REG(hw, IXGBE_EERD) >>
1136 IXGBE_EEPROM_RW_REG_DATA);
1138 hw_dbg(hw, "Eeprom read timed out\n");
1147 * ixgbe_detect_eeprom_page_size_generic - Detect EEPROM page size
1148 * @hw: pointer to hardware structure
1149 * @offset: offset within the EEPROM to be used as a scratch pad
1151 * Discover EEPROM page size by writing marching data at given offset.
1152 * This function is called only when we are writing a new large buffer
1153 * at given offset so the data would be overwritten anyway.
1155 static s32 ixgbe_detect_eeprom_page_size_generic(struct ixgbe_hw *hw,
1158 u16 data[IXGBE_EEPROM_PAGE_SIZE_MAX];
1162 for (i = 0; i < IXGBE_EEPROM_PAGE_SIZE_MAX; i++)
1165 hw->eeprom.word_page_size = IXGBE_EEPROM_PAGE_SIZE_MAX;
1166 status = ixgbe_write_eeprom_buffer_bit_bang(hw, offset,
1167 IXGBE_EEPROM_PAGE_SIZE_MAX, data);
1168 hw->eeprom.word_page_size = 0;
1172 status = ixgbe_read_eeprom_buffer_bit_bang(hw, offset, 1, data);
1177 * When writing in burst more than the actual page size
1178 * EEPROM address wraps around current page.
1180 hw->eeprom.word_page_size = IXGBE_EEPROM_PAGE_SIZE_MAX - data[0];
1182 hw_dbg(hw, "Detected EEPROM page size = %d words.",
1183 hw->eeprom.word_page_size);
1189 * ixgbe_read_eerd_generic - Read EEPROM word using EERD
1190 * @hw: pointer to hardware structure
1191 * @offset: offset of word in the EEPROM to read
1192 * @data: word read from the EEPROM
1194 * Reads a 16 bit word from the EEPROM using the EERD register.
1196 s32 ixgbe_read_eerd_generic(struct ixgbe_hw *hw, u16 offset, u16 *data)
1198 return ixgbe_read_eerd_buffer_generic(hw, offset, 1, data);
1202 * ixgbe_write_eewr_buffer_generic - Write EEPROM word(s) using EEWR
1203 * @hw: pointer to hardware structure
1204 * @offset: offset of word in the EEPROM to write
1205 * @words: number of words
1206 * @data: word(s) write to the EEPROM
1208 * Write a 16 bit word(s) to the EEPROM using the EEWR register.
1210 s32 ixgbe_write_eewr_buffer_generic(struct ixgbe_hw *hw, u16 offset,
1211 u16 words, u16 *data)
1217 hw->eeprom.ops.init_params(hw);
1220 status = IXGBE_ERR_INVALID_ARGUMENT;
1224 if (offset >= hw->eeprom.word_size) {
1225 status = IXGBE_ERR_EEPROM;
1229 for (i = 0; i < words; i++) {
1230 eewr = ((offset + i) << IXGBE_EEPROM_RW_ADDR_SHIFT) |
1231 (data[i] << IXGBE_EEPROM_RW_REG_DATA) |
1232 IXGBE_EEPROM_RW_REG_START;
1234 status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_WRITE);
1236 hw_dbg(hw, "Eeprom write EEWR timed out\n");
1240 IXGBE_WRITE_REG(hw, IXGBE_EEWR, eewr);
1242 status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_WRITE);
1244 hw_dbg(hw, "Eeprom write EEWR timed out\n");
1254 * ixgbe_write_eewr_generic - Write EEPROM word using EEWR
1255 * @hw: pointer to hardware structure
1256 * @offset: offset of word in the EEPROM to write
1257 * @data: word write to the EEPROM
1259 * Write a 16 bit word to the EEPROM using the EEWR register.
1261 s32 ixgbe_write_eewr_generic(struct ixgbe_hw *hw, u16 offset, u16 data)
1263 return ixgbe_write_eewr_buffer_generic(hw, offset, 1, &data);
1267 * ixgbe_poll_eerd_eewr_done - Poll EERD read or EEWR write status
1268 * @hw: pointer to hardware structure
1269 * @ee_reg: EEPROM flag for polling
1271 * Polls the status bit (bit 1) of the EERD or EEWR to determine when the
1272 * read or write is done respectively.
1274 static s32 ixgbe_poll_eerd_eewr_done(struct ixgbe_hw *hw, u32 ee_reg)
1278 s32 status = IXGBE_ERR_EEPROM;
1280 for (i = 0; i < IXGBE_EERD_EEWR_ATTEMPTS; i++) {
1281 if (ee_reg == IXGBE_NVM_POLL_READ)
1282 reg = IXGBE_READ_REG(hw, IXGBE_EERD);
1284 reg = IXGBE_READ_REG(hw, IXGBE_EEWR);
1286 if (reg & IXGBE_EEPROM_RW_REG_DONE) {
1296 * ixgbe_acquire_eeprom - Acquire EEPROM using bit-bang
1297 * @hw: pointer to hardware structure
1299 * Prepares EEPROM for access using bit-bang method. This function should
1300 * be called before issuing a command to the EEPROM.
1302 static s32 ixgbe_acquire_eeprom(struct ixgbe_hw *hw)
1308 if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) != 0)
1309 status = IXGBE_ERR_SWFW_SYNC;
1312 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1314 /* Request EEPROM Access */
1315 eec |= IXGBE_EEC_REQ;
1316 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1318 for (i = 0; i < IXGBE_EEPROM_GRANT_ATTEMPTS; i++) {
1319 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1320 if (eec & IXGBE_EEC_GNT)
1325 /* Release if grant not acquired */
1326 if (!(eec & IXGBE_EEC_GNT)) {
1327 eec &= ~IXGBE_EEC_REQ;
1328 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1329 hw_dbg(hw, "Could not acquire EEPROM grant\n");
1331 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
1332 status = IXGBE_ERR_EEPROM;
1335 /* Setup EEPROM for Read/Write */
1337 /* Clear CS and SK */
1338 eec &= ~(IXGBE_EEC_CS | IXGBE_EEC_SK);
1339 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1340 IXGBE_WRITE_FLUSH(hw);
1348 * ixgbe_get_eeprom_semaphore - Get hardware semaphore
1349 * @hw: pointer to hardware structure
1351 * Sets the hardware semaphores so EEPROM access can occur for bit-bang method
1353 static s32 ixgbe_get_eeprom_semaphore(struct ixgbe_hw *hw)
1355 s32 status = IXGBE_ERR_EEPROM;
1360 /* Get SMBI software semaphore between device drivers first */
1361 for (i = 0; i < timeout; i++) {
1363 * If the SMBI bit is 0 when we read it, then the bit will be
1364 * set and we have the semaphore
1366 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
1367 if (!(swsm & IXGBE_SWSM_SMBI)) {
1375 hw_dbg(hw, "Driver can't access the Eeprom - SMBI Semaphore "
1378 * this release is particularly important because our attempts
1379 * above to get the semaphore may have succeeded, and if there
1380 * was a timeout, we should unconditionally clear the semaphore
1381 * bits to free the driver to make progress
1383 ixgbe_release_eeprom_semaphore(hw);
1388 * If the SMBI bit is 0 when we read it, then the bit will be
1389 * set and we have the semaphore
1391 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
1392 if (!(swsm & IXGBE_SWSM_SMBI))
1396 /* Now get the semaphore between SW/FW through the SWESMBI bit */
1398 for (i = 0; i < timeout; i++) {
1399 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
1401 /* Set the SW EEPROM semaphore bit to request access */
1402 swsm |= IXGBE_SWSM_SWESMBI;
1403 IXGBE_WRITE_REG(hw, IXGBE_SWSM, swsm);
1406 * If we set the bit successfully then we got the
1409 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
1410 if (swsm & IXGBE_SWSM_SWESMBI)
1417 * Release semaphores and return error if SW EEPROM semaphore
1418 * was not granted because we don't have access to the EEPROM
1421 hw_dbg(hw, "SWESMBI Software EEPROM semaphore "
1423 ixgbe_release_eeprom_semaphore(hw);
1424 status = IXGBE_ERR_EEPROM;
1427 hw_dbg(hw, "Software semaphore SMBI between device drivers "
1435 * ixgbe_release_eeprom_semaphore - Release hardware semaphore
1436 * @hw: pointer to hardware structure
1438 * This function clears hardware semaphore bits.
1440 static void ixgbe_release_eeprom_semaphore(struct ixgbe_hw *hw)
1444 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
1446 /* Release both semaphores by writing 0 to the bits SWESMBI and SMBI */
1447 swsm &= ~(IXGBE_SWSM_SWESMBI | IXGBE_SWSM_SMBI);
1448 IXGBE_WRITE_REG(hw, IXGBE_SWSM, swsm);
1449 IXGBE_WRITE_FLUSH(hw);
1453 * ixgbe_ready_eeprom - Polls for EEPROM ready
1454 * @hw: pointer to hardware structure
1456 static s32 ixgbe_ready_eeprom(struct ixgbe_hw *hw)
1463 * Read "Status Register" repeatedly until the LSB is cleared. The
1464 * EEPROM will signal that the command has been completed by clearing
1465 * bit 0 of the internal status register. If it's not cleared within
1466 * 5 milliseconds, then error out.
1468 for (i = 0; i < IXGBE_EEPROM_MAX_RETRY_SPI; i += 5) {
1469 ixgbe_shift_out_eeprom_bits(hw, IXGBE_EEPROM_RDSR_OPCODE_SPI,
1470 IXGBE_EEPROM_OPCODE_BITS);
1471 spi_stat_reg = (u8)ixgbe_shift_in_eeprom_bits(hw, 8);
1472 if (!(spi_stat_reg & IXGBE_EEPROM_STATUS_RDY_SPI))
1476 ixgbe_standby_eeprom(hw);
1480 * On some parts, SPI write time could vary from 0-20mSec on 3.3V
1481 * devices (and only 0-5mSec on 5V devices)
1483 if (i >= IXGBE_EEPROM_MAX_RETRY_SPI) {
1484 hw_dbg(hw, "SPI EEPROM Status error\n");
1485 status = IXGBE_ERR_EEPROM;
1492 * ixgbe_standby_eeprom - Returns EEPROM to a "standby" state
1493 * @hw: pointer to hardware structure
1495 static void ixgbe_standby_eeprom(struct ixgbe_hw *hw)
1499 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1501 /* Toggle CS to flush commands */
1502 eec |= IXGBE_EEC_CS;
1503 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1504 IXGBE_WRITE_FLUSH(hw);
1506 eec &= ~IXGBE_EEC_CS;
1507 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1508 IXGBE_WRITE_FLUSH(hw);
1513 * ixgbe_shift_out_eeprom_bits - Shift data bits out to the EEPROM.
1514 * @hw: pointer to hardware structure
1515 * @data: data to send to the EEPROM
1516 * @count: number of bits to shift out
1518 static void ixgbe_shift_out_eeprom_bits(struct ixgbe_hw *hw, u16 data,
1525 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1528 * Mask is used to shift "count" bits of "data" out to the EEPROM
1529 * one bit at a time. Determine the starting bit based on count
1531 mask = 0x01 << (count - 1);
1533 for (i = 0; i < count; i++) {
1535 * A "1" is shifted out to the EEPROM by setting bit "DI" to a
1536 * "1", and then raising and then lowering the clock (the SK
1537 * bit controls the clock input to the EEPROM). A "0" is
1538 * shifted out to the EEPROM by setting "DI" to "0" and then
1539 * raising and then lowering the clock.
1542 eec |= IXGBE_EEC_DI;
1544 eec &= ~IXGBE_EEC_DI;
1546 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1547 IXGBE_WRITE_FLUSH(hw);
1551 ixgbe_raise_eeprom_clk(hw, &eec);
1552 ixgbe_lower_eeprom_clk(hw, &eec);
1555 * Shift mask to signify next bit of data to shift in to the
1561 /* We leave the "DI" bit set to "0" when we leave this routine. */
1562 eec &= ~IXGBE_EEC_DI;
1563 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1564 IXGBE_WRITE_FLUSH(hw);
1568 * ixgbe_shift_in_eeprom_bits - Shift data bits in from the EEPROM
1569 * @hw: pointer to hardware structure
1571 static u16 ixgbe_shift_in_eeprom_bits(struct ixgbe_hw *hw, u16 count)
1578 * In order to read a register from the EEPROM, we need to shift
1579 * 'count' bits in from the EEPROM. Bits are "shifted in" by raising
1580 * the clock input to the EEPROM (setting the SK bit), and then reading
1581 * the value of the "DO" bit. During this "shifting in" process the
1582 * "DI" bit should always be clear.
1584 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1586 eec &= ~(IXGBE_EEC_DO | IXGBE_EEC_DI);
1588 for (i = 0; i < count; i++) {
1590 ixgbe_raise_eeprom_clk(hw, &eec);
1592 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1594 eec &= ~(IXGBE_EEC_DI);
1595 if (eec & IXGBE_EEC_DO)
1598 ixgbe_lower_eeprom_clk(hw, &eec);
1605 * ixgbe_raise_eeprom_clk - Raises the EEPROM's clock input.
1606 * @hw: pointer to hardware structure
1607 * @eec: EEC register's current value
1609 static void ixgbe_raise_eeprom_clk(struct ixgbe_hw *hw, u32 *eec)
1612 * Raise the clock input to the EEPROM
1613 * (setting the SK bit), then delay
1615 *eec = *eec | IXGBE_EEC_SK;
1616 IXGBE_WRITE_REG(hw, IXGBE_EEC, *eec);
1617 IXGBE_WRITE_FLUSH(hw);
1622 * ixgbe_lower_eeprom_clk - Lowers the EEPROM's clock input.
1623 * @hw: pointer to hardware structure
1624 * @eecd: EECD's current value
1626 static void ixgbe_lower_eeprom_clk(struct ixgbe_hw *hw, u32 *eec)
1629 * Lower the clock input to the EEPROM (clearing the SK bit), then
1632 *eec = *eec & ~IXGBE_EEC_SK;
1633 IXGBE_WRITE_REG(hw, IXGBE_EEC, *eec);
1634 IXGBE_WRITE_FLUSH(hw);
1639 * ixgbe_release_eeprom - Release EEPROM, release semaphores
1640 * @hw: pointer to hardware structure
1642 static void ixgbe_release_eeprom(struct ixgbe_hw *hw)
1646 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1648 eec |= IXGBE_EEC_CS; /* Pull CS high */
1649 eec &= ~IXGBE_EEC_SK; /* Lower SCK */
1651 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1652 IXGBE_WRITE_FLUSH(hw);
1656 /* Stop requesting EEPROM access */
1657 eec &= ~IXGBE_EEC_REQ;
1658 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1660 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
1663 * Delay before attempt to obtain semaphore again to allow FW
1664 * access. semaphore_delay is in ms we need us for usleep_range
1666 usleep_range(hw->eeprom.semaphore_delay * 1000,
1667 hw->eeprom.semaphore_delay * 2000);
1671 * ixgbe_calc_eeprom_checksum_generic - Calculates and returns the checksum
1672 * @hw: pointer to hardware structure
1674 u16 ixgbe_calc_eeprom_checksum_generic(struct ixgbe_hw *hw)
1683 /* Include 0x0-0x3F in the checksum */
1684 for (i = 0; i < IXGBE_EEPROM_CHECKSUM; i++) {
1685 if (hw->eeprom.ops.read(hw, i, &word) != 0) {
1686 hw_dbg(hw, "EEPROM read failed\n");
1692 /* Include all data from pointers except for the fw pointer */
1693 for (i = IXGBE_PCIE_ANALOG_PTR; i < IXGBE_FW_PTR; i++) {
1694 hw->eeprom.ops.read(hw, i, &pointer);
1696 /* Make sure the pointer seems valid */
1697 if (pointer != 0xFFFF && pointer != 0) {
1698 hw->eeprom.ops.read(hw, pointer, &length);
1700 if (length != 0xFFFF && length != 0) {
1701 for (j = pointer+1; j <= pointer+length; j++) {
1702 hw->eeprom.ops.read(hw, j, &word);
1709 checksum = (u16)IXGBE_EEPROM_SUM - checksum;
1715 * ixgbe_validate_eeprom_checksum_generic - Validate EEPROM checksum
1716 * @hw: pointer to hardware structure
1717 * @checksum_val: calculated checksum
1719 * Performs checksum calculation and validates the EEPROM checksum. If the
1720 * caller does not need checksum_val, the value can be NULL.
1722 s32 ixgbe_validate_eeprom_checksum_generic(struct ixgbe_hw *hw,
1727 u16 read_checksum = 0;
1730 * Read the first word from the EEPROM. If this times out or fails, do
1731 * not continue or we could be in for a very long wait while every
1734 status = hw->eeprom.ops.read(hw, 0, &checksum);
1737 checksum = hw->eeprom.ops.calc_checksum(hw);
1739 hw->eeprom.ops.read(hw, IXGBE_EEPROM_CHECKSUM, &read_checksum);
1742 * Verify read checksum from EEPROM is the same as
1743 * calculated checksum
1745 if (read_checksum != checksum)
1746 status = IXGBE_ERR_EEPROM_CHECKSUM;
1748 /* If the user cares, return the calculated checksum */
1750 *checksum_val = checksum;
1752 hw_dbg(hw, "EEPROM read failed\n");
1759 * ixgbe_update_eeprom_checksum_generic - Updates the EEPROM checksum
1760 * @hw: pointer to hardware structure
1762 s32 ixgbe_update_eeprom_checksum_generic(struct ixgbe_hw *hw)
1768 * Read the first word from the EEPROM. If this times out or fails, do
1769 * not continue or we could be in for a very long wait while every
1772 status = hw->eeprom.ops.read(hw, 0, &checksum);
1775 checksum = hw->eeprom.ops.calc_checksum(hw);
1776 status = hw->eeprom.ops.write(hw, IXGBE_EEPROM_CHECKSUM,
1779 hw_dbg(hw, "EEPROM read failed\n");
1786 * ixgbe_validate_mac_addr - Validate MAC address
1787 * @mac_addr: pointer to MAC address.
1789 * Tests a MAC address to ensure it is a valid Individual Address
1791 s32 ixgbe_validate_mac_addr(u8 *mac_addr)
1795 /* Make sure it is not a multicast address */
1796 if (IXGBE_IS_MULTICAST(mac_addr))
1797 status = IXGBE_ERR_INVALID_MAC_ADDR;
1798 /* Not a broadcast address */
1799 else if (IXGBE_IS_BROADCAST(mac_addr))
1800 status = IXGBE_ERR_INVALID_MAC_ADDR;
1801 /* Reject the zero address */
1802 else if (is_zero_ether_addr(mac_addr))
1803 status = IXGBE_ERR_INVALID_MAC_ADDR;
1809 * ixgbe_set_rar_generic - Set Rx address register
1810 * @hw: pointer to hardware structure
1811 * @index: Receive address register to write
1812 * @addr: Address to put into receive address register
1813 * @vmdq: VMDq "set" or "pool" index
1814 * @enable_addr: set flag that address is active
1816 * Puts an ethernet address into a receive address register.
1818 s32 ixgbe_set_rar_generic(struct ixgbe_hw *hw, u32 index, u8 *addr, u32 vmdq,
1821 u32 rar_low, rar_high;
1822 u32 rar_entries = hw->mac.num_rar_entries;
1824 /* Make sure we are using a valid rar index range */
1825 if (index >= rar_entries) {
1826 hw_dbg(hw, "RAR index %d is out of range.\n", index);
1827 return IXGBE_ERR_INVALID_ARGUMENT;
1830 /* setup VMDq pool selection before this RAR gets enabled */
1831 hw->mac.ops.set_vmdq(hw, index, vmdq);
1834 * HW expects these in little endian so we reverse the byte
1835 * order from network order (big endian) to little endian
1837 rar_low = ((u32)addr[0] |
1838 ((u32)addr[1] << 8) |
1839 ((u32)addr[2] << 16) |
1840 ((u32)addr[3] << 24));
1842 * Some parts put the VMDq setting in the extra RAH bits,
1843 * so save everything except the lower 16 bits that hold part
1844 * of the address and the address valid bit.
1846 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index));
1847 rar_high &= ~(0x0000FFFF | IXGBE_RAH_AV);
1848 rar_high |= ((u32)addr[4] | ((u32)addr[5] << 8));
1850 if (enable_addr != 0)
1851 rar_high |= IXGBE_RAH_AV;
1853 IXGBE_WRITE_REG(hw, IXGBE_RAL(index), rar_low);
1854 IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high);
1860 * ixgbe_clear_rar_generic - Remove Rx address register
1861 * @hw: pointer to hardware structure
1862 * @index: Receive address register to write
1864 * Clears an ethernet address from a receive address register.
1866 s32 ixgbe_clear_rar_generic(struct ixgbe_hw *hw, u32 index)
1869 u32 rar_entries = hw->mac.num_rar_entries;
1871 /* Make sure we are using a valid rar index range */
1872 if (index >= rar_entries) {
1873 hw_dbg(hw, "RAR index %d is out of range.\n", index);
1874 return IXGBE_ERR_INVALID_ARGUMENT;
1878 * Some parts put the VMDq setting in the extra RAH bits,
1879 * so save everything except the lower 16 bits that hold part
1880 * of the address and the address valid bit.
1882 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index));
1883 rar_high &= ~(0x0000FFFF | IXGBE_RAH_AV);
1885 IXGBE_WRITE_REG(hw, IXGBE_RAL(index), 0);
1886 IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high);
1888 /* clear VMDq pool/queue selection for this RAR */
1889 hw->mac.ops.clear_vmdq(hw, index, IXGBE_CLEAR_VMDQ_ALL);
1895 * ixgbe_init_rx_addrs_generic - Initializes receive address filters.
1896 * @hw: pointer to hardware structure
1898 * Places the MAC address in receive address register 0 and clears the rest
1899 * of the receive address registers. Clears the multicast table. Assumes
1900 * the receiver is in reset when the routine is called.
1902 s32 ixgbe_init_rx_addrs_generic(struct ixgbe_hw *hw)
1905 u32 rar_entries = hw->mac.num_rar_entries;
1908 * If the current mac address is valid, assume it is a software override
1909 * to the permanent address.
1910 * Otherwise, use the permanent address from the eeprom.
1912 if (ixgbe_validate_mac_addr(hw->mac.addr) ==
1913 IXGBE_ERR_INVALID_MAC_ADDR) {
1914 /* Get the MAC address from the RAR0 for later reference */
1915 hw->mac.ops.get_mac_addr(hw, hw->mac.addr);
1917 hw_dbg(hw, " Keeping Current RAR0 Addr =%pM\n", hw->mac.addr);
1919 /* Setup the receive address. */
1920 hw_dbg(hw, "Overriding MAC Address in RAR[0]\n");
1921 hw_dbg(hw, " New MAC Addr =%pM\n", hw->mac.addr);
1923 hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0, IXGBE_RAH_AV);
1925 /* clear VMDq pool/queue selection for RAR 0 */
1926 hw->mac.ops.clear_vmdq(hw, 0, IXGBE_CLEAR_VMDQ_ALL);
1928 hw->addr_ctrl.overflow_promisc = 0;
1930 hw->addr_ctrl.rar_used_count = 1;
1932 /* Zero out the other receive addresses. */
1933 hw_dbg(hw, "Clearing RAR[1-%d]\n", rar_entries - 1);
1934 for (i = 1; i < rar_entries; i++) {
1935 IXGBE_WRITE_REG(hw, IXGBE_RAL(i), 0);
1936 IXGBE_WRITE_REG(hw, IXGBE_RAH(i), 0);
1940 hw->addr_ctrl.mta_in_use = 0;
1941 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, hw->mac.mc_filter_type);
1943 hw_dbg(hw, " Clearing MTA\n");
1944 for (i = 0; i < hw->mac.mcft_size; i++)
1945 IXGBE_WRITE_REG(hw, IXGBE_MTA(i), 0);
1947 if (hw->mac.ops.init_uta_tables)
1948 hw->mac.ops.init_uta_tables(hw);
1954 * ixgbe_mta_vector - Determines bit-vector in multicast table to set
1955 * @hw: pointer to hardware structure
1956 * @mc_addr: the multicast address
1958 * Extracts the 12 bits, from a multicast address, to determine which
1959 * bit-vector to set in the multicast table. The hardware uses 12 bits, from
1960 * incoming rx multicast addresses, to determine the bit-vector to check in
1961 * the MTA. Which of the 4 combination, of 12-bits, the hardware uses is set
1962 * by the MO field of the MCSTCTRL. The MO field is set during initialization
1963 * to mc_filter_type.
1965 static s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr)
1969 switch (hw->mac.mc_filter_type) {
1970 case 0: /* use bits [47:36] of the address */
1971 vector = ((mc_addr[4] >> 4) | (((u16)mc_addr[5]) << 4));
1973 case 1: /* use bits [46:35] of the address */
1974 vector = ((mc_addr[4] >> 3) | (((u16)mc_addr[5]) << 5));
1976 case 2: /* use bits [45:34] of the address */
1977 vector = ((mc_addr[4] >> 2) | (((u16)mc_addr[5]) << 6));
1979 case 3: /* use bits [43:32] of the address */
1980 vector = ((mc_addr[4]) | (((u16)mc_addr[5]) << 8));
1982 default: /* Invalid mc_filter_type */
1983 hw_dbg(hw, "MC filter type param set incorrectly\n");
1987 /* vector can only be 12-bits or boundary will be exceeded */
1993 * ixgbe_set_mta - Set bit-vector in multicast table
1994 * @hw: pointer to hardware structure
1995 * @hash_value: Multicast address hash value
1997 * Sets the bit-vector in the multicast table.
1999 static void ixgbe_set_mta(struct ixgbe_hw *hw, u8 *mc_addr)
2005 hw->addr_ctrl.mta_in_use++;
2007 vector = ixgbe_mta_vector(hw, mc_addr);
2008 hw_dbg(hw, " bit-vector = 0x%03X\n", vector);
2011 * The MTA is a register array of 128 32-bit registers. It is treated
2012 * like an array of 4096 bits. We want to set bit
2013 * BitArray[vector_value]. So we figure out what register the bit is
2014 * in, read it, OR in the new bit, then write back the new value. The
2015 * register is determined by the upper 7 bits of the vector value and
2016 * the bit within that register are determined by the lower 5 bits of
2019 vector_reg = (vector >> 5) & 0x7F;
2020 vector_bit = vector & 0x1F;
2021 hw->mac.mta_shadow[vector_reg] |= (1 << vector_bit);
2025 * ixgbe_update_mc_addr_list_generic - Updates MAC list of multicast addresses
2026 * @hw: pointer to hardware structure
2027 * @netdev: pointer to net device structure
2029 * The given list replaces any existing list. Clears the MC addrs from receive
2030 * address registers and the multicast table. Uses unused receive address
2031 * registers for the first multicast addresses, and hashes the rest into the
2034 s32 ixgbe_update_mc_addr_list_generic(struct ixgbe_hw *hw,
2035 struct net_device *netdev)
2037 struct netdev_hw_addr *ha;
2041 * Set the new number of MC addresses that we are being requested to
2044 hw->addr_ctrl.num_mc_addrs = netdev_mc_count(netdev);
2045 hw->addr_ctrl.mta_in_use = 0;
2047 /* Clear mta_shadow */
2048 hw_dbg(hw, " Clearing MTA\n");
2049 memset(&hw->mac.mta_shadow, 0, sizeof(hw->mac.mta_shadow));
2051 /* Update mta shadow */
2052 netdev_for_each_mc_addr(ha, netdev) {
2053 hw_dbg(hw, " Adding the multicast addresses:\n");
2054 ixgbe_set_mta(hw, ha->addr);
2058 for (i = 0; i < hw->mac.mcft_size; i++)
2059 IXGBE_WRITE_REG_ARRAY(hw, IXGBE_MTA(0), i,
2060 hw->mac.mta_shadow[i]);
2062 if (hw->addr_ctrl.mta_in_use > 0)
2063 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL,
2064 IXGBE_MCSTCTRL_MFE | hw->mac.mc_filter_type);
2066 hw_dbg(hw, "ixgbe_update_mc_addr_list_generic Complete\n");
2071 * ixgbe_enable_mc_generic - Enable multicast address in RAR
2072 * @hw: pointer to hardware structure
2074 * Enables multicast address in RAR and the use of the multicast hash table.
2076 s32 ixgbe_enable_mc_generic(struct ixgbe_hw *hw)
2078 struct ixgbe_addr_filter_info *a = &hw->addr_ctrl;
2080 if (a->mta_in_use > 0)
2081 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, IXGBE_MCSTCTRL_MFE |
2082 hw->mac.mc_filter_type);
2088 * ixgbe_disable_mc_generic - Disable multicast address in RAR
2089 * @hw: pointer to hardware structure
2091 * Disables multicast address in RAR and the use of the multicast hash table.
2093 s32 ixgbe_disable_mc_generic(struct ixgbe_hw *hw)
2095 struct ixgbe_addr_filter_info *a = &hw->addr_ctrl;
2097 if (a->mta_in_use > 0)
2098 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, hw->mac.mc_filter_type);
2104 * ixgbe_fc_enable_generic - Enable flow control
2105 * @hw: pointer to hardware structure
2107 * Enable flow control according to the current settings.
2109 s32 ixgbe_fc_enable_generic(struct ixgbe_hw *hw)
2112 u32 mflcn_reg, fccfg_reg;
2118 * Validate the water mark configuration for packet buffer 0. Zero
2119 * water marks indicate that the packet buffer was not configured
2120 * and the watermarks for packet buffer 0 should always be configured.
2122 if (!hw->fc.low_water ||
2123 !hw->fc.high_water[0] ||
2124 !hw->fc.pause_time) {
2125 hw_dbg(hw, "Invalid water mark configuration\n");
2126 ret_val = IXGBE_ERR_INVALID_LINK_SETTINGS;
2130 /* Negotiate the fc mode to use */
2131 ixgbe_fc_autoneg(hw);
2133 /* Disable any previous flow control settings */
2134 mflcn_reg = IXGBE_READ_REG(hw, IXGBE_MFLCN);
2135 mflcn_reg &= ~(IXGBE_MFLCN_RPFCE_MASK | IXGBE_MFLCN_RFCE);
2137 fccfg_reg = IXGBE_READ_REG(hw, IXGBE_FCCFG);
2138 fccfg_reg &= ~(IXGBE_FCCFG_TFCE_802_3X | IXGBE_FCCFG_TFCE_PRIORITY);
2141 * The possible values of fc.current_mode are:
2142 * 0: Flow control is completely disabled
2143 * 1: Rx flow control is enabled (we can receive pause frames,
2144 * but not send pause frames).
2145 * 2: Tx flow control is enabled (we can send pause frames but
2146 * we do not support receiving pause frames).
2147 * 3: Both Rx and Tx flow control (symmetric) are enabled.
2150 switch (hw->fc.current_mode) {
2153 * Flow control is disabled by software override or autoneg.
2154 * The code below will actually disable it in the HW.
2157 case ixgbe_fc_rx_pause:
2159 * Rx Flow control is enabled and Tx Flow control is
2160 * disabled by software override. Since there really
2161 * isn't a way to advertise that we are capable of RX
2162 * Pause ONLY, we will advertise that we support both
2163 * symmetric and asymmetric Rx PAUSE. Later, we will
2164 * disable the adapter's ability to send PAUSE frames.
2166 mflcn_reg |= IXGBE_MFLCN_RFCE;
2168 case ixgbe_fc_tx_pause:
2170 * Tx Flow control is enabled, and Rx Flow control is
2171 * disabled by software override.
2173 fccfg_reg |= IXGBE_FCCFG_TFCE_802_3X;
2176 /* Flow control (both Rx and Tx) is enabled by SW override. */
2177 mflcn_reg |= IXGBE_MFLCN_RFCE;
2178 fccfg_reg |= IXGBE_FCCFG_TFCE_802_3X;
2181 hw_dbg(hw, "Flow control param set incorrectly\n");
2182 ret_val = IXGBE_ERR_CONFIG;
2187 /* Set 802.3x based flow control settings. */
2188 mflcn_reg |= IXGBE_MFLCN_DPF;
2189 IXGBE_WRITE_REG(hw, IXGBE_MFLCN, mflcn_reg);
2190 IXGBE_WRITE_REG(hw, IXGBE_FCCFG, fccfg_reg);
2192 fcrtl = (hw->fc.low_water << 10) | IXGBE_FCRTL_XONE;
2194 /* Set up and enable Rx high/low water mark thresholds, enable XON. */
2195 for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
2196 if ((hw->fc.current_mode & ixgbe_fc_tx_pause) &&
2197 hw->fc.high_water[i]) {
2198 IXGBE_WRITE_REG(hw, IXGBE_FCRTL_82599(i), fcrtl);
2199 fcrth = (hw->fc.high_water[i] << 10) | IXGBE_FCRTH_FCEN;
2201 IXGBE_WRITE_REG(hw, IXGBE_FCRTL_82599(i), 0);
2203 * In order to prevent Tx hangs when the internal Tx
2204 * switch is enabled we must set the high water mark
2205 * to the maximum FCRTH value. This allows the Tx
2206 * switch to function even under heavy Rx workloads.
2208 fcrth = IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(i)) - 32;
2211 IXGBE_WRITE_REG(hw, IXGBE_FCRTH_82599(i), fcrth);
2214 /* Configure pause time (2 TCs per register) */
2215 reg = hw->fc.pause_time * 0x00010001;
2216 for (i = 0; i < (MAX_TRAFFIC_CLASS / 2); i++)
2217 IXGBE_WRITE_REG(hw, IXGBE_FCTTV(i), reg);
2219 IXGBE_WRITE_REG(hw, IXGBE_FCRTV, hw->fc.pause_time / 2);
2226 * ixgbe_negotiate_fc - Negotiate flow control
2227 * @hw: pointer to hardware structure
2228 * @adv_reg: flow control advertised settings
2229 * @lp_reg: link partner's flow control settings
2230 * @adv_sym: symmetric pause bit in advertisement
2231 * @adv_asm: asymmetric pause bit in advertisement
2232 * @lp_sym: symmetric pause bit in link partner advertisement
2233 * @lp_asm: asymmetric pause bit in link partner advertisement
2235 * Find the intersection between advertised settings and link partner's
2236 * advertised settings
2238 static s32 ixgbe_negotiate_fc(struct ixgbe_hw *hw, u32 adv_reg, u32 lp_reg,
2239 u32 adv_sym, u32 adv_asm, u32 lp_sym, u32 lp_asm)
2241 if ((!(adv_reg)) || (!(lp_reg)))
2242 return IXGBE_ERR_FC_NOT_NEGOTIATED;
2244 if ((adv_reg & adv_sym) && (lp_reg & lp_sym)) {
2246 * Now we need to check if the user selected Rx ONLY
2247 * of pause frames. In this case, we had to advertise
2248 * FULL flow control because we could not advertise RX
2249 * ONLY. Hence, we must now check to see if we need to
2250 * turn OFF the TRANSMISSION of PAUSE frames.
2252 if (hw->fc.requested_mode == ixgbe_fc_full) {
2253 hw->fc.current_mode = ixgbe_fc_full;
2254 hw_dbg(hw, "Flow Control = FULL.\n");
2256 hw->fc.current_mode = ixgbe_fc_rx_pause;
2257 hw_dbg(hw, "Flow Control=RX PAUSE frames only\n");
2259 } else if (!(adv_reg & adv_sym) && (adv_reg & adv_asm) &&
2260 (lp_reg & lp_sym) && (lp_reg & lp_asm)) {
2261 hw->fc.current_mode = ixgbe_fc_tx_pause;
2262 hw_dbg(hw, "Flow Control = TX PAUSE frames only.\n");
2263 } else if ((adv_reg & adv_sym) && (adv_reg & adv_asm) &&
2264 !(lp_reg & lp_sym) && (lp_reg & lp_asm)) {
2265 hw->fc.current_mode = ixgbe_fc_rx_pause;
2266 hw_dbg(hw, "Flow Control = RX PAUSE frames only.\n");
2268 hw->fc.current_mode = ixgbe_fc_none;
2269 hw_dbg(hw, "Flow Control = NONE.\n");
2275 * ixgbe_fc_autoneg_fiber - Enable flow control on 1 gig fiber
2276 * @hw: pointer to hardware structure
2278 * Enable flow control according on 1 gig fiber.
2280 static s32 ixgbe_fc_autoneg_fiber(struct ixgbe_hw *hw)
2282 u32 pcs_anadv_reg, pcs_lpab_reg, linkstat;
2283 s32 ret_val = IXGBE_ERR_FC_NOT_NEGOTIATED;
2286 * On multispeed fiber at 1g, bail out if
2287 * - link is up but AN did not complete, or if
2288 * - link is up and AN completed but timed out
2291 linkstat = IXGBE_READ_REG(hw, IXGBE_PCS1GLSTA);
2292 if ((!!(linkstat & IXGBE_PCS1GLSTA_AN_COMPLETE) == 0) ||
2293 (!!(linkstat & IXGBE_PCS1GLSTA_AN_TIMED_OUT) == 1))
2296 pcs_anadv_reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANA);
2297 pcs_lpab_reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANLP);
2299 ret_val = ixgbe_negotiate_fc(hw, pcs_anadv_reg,
2300 pcs_lpab_reg, IXGBE_PCS1GANA_SYM_PAUSE,
2301 IXGBE_PCS1GANA_ASM_PAUSE,
2302 IXGBE_PCS1GANA_SYM_PAUSE,
2303 IXGBE_PCS1GANA_ASM_PAUSE);
2310 * ixgbe_fc_autoneg_backplane - Enable flow control IEEE clause 37
2311 * @hw: pointer to hardware structure
2313 * Enable flow control according to IEEE clause 37.
2315 static s32 ixgbe_fc_autoneg_backplane(struct ixgbe_hw *hw)
2317 u32 links2, anlp1_reg, autoc_reg, links;
2318 s32 ret_val = IXGBE_ERR_FC_NOT_NEGOTIATED;
2321 * On backplane, bail out if
2322 * - backplane autoneg was not completed, or if
2323 * - we are 82599 and link partner is not AN enabled
2325 links = IXGBE_READ_REG(hw, IXGBE_LINKS);
2326 if ((links & IXGBE_LINKS_KX_AN_COMP) == 0)
2329 if (hw->mac.type == ixgbe_mac_82599EB) {
2330 links2 = IXGBE_READ_REG(hw, IXGBE_LINKS2);
2331 if ((links2 & IXGBE_LINKS2_AN_SUPPORTED) == 0)
2335 * Read the 10g AN autoc and LP ability registers and resolve
2336 * local flow control settings accordingly
2338 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
2339 anlp1_reg = IXGBE_READ_REG(hw, IXGBE_ANLP1);
2341 ret_val = ixgbe_negotiate_fc(hw, autoc_reg,
2342 anlp1_reg, IXGBE_AUTOC_SYM_PAUSE, IXGBE_AUTOC_ASM_PAUSE,
2343 IXGBE_ANLP1_SYM_PAUSE, IXGBE_ANLP1_ASM_PAUSE);
2350 * ixgbe_fc_autoneg_copper - Enable flow control IEEE clause 37
2351 * @hw: pointer to hardware structure
2353 * Enable flow control according to IEEE clause 37.
2355 static s32 ixgbe_fc_autoneg_copper(struct ixgbe_hw *hw)
2357 u16 technology_ability_reg = 0;
2358 u16 lp_technology_ability_reg = 0;
2360 hw->phy.ops.read_reg(hw, MDIO_AN_ADVERTISE,
2362 &technology_ability_reg);
2363 hw->phy.ops.read_reg(hw, MDIO_AN_LPA,
2365 &lp_technology_ability_reg);
2367 return ixgbe_negotiate_fc(hw, (u32)technology_ability_reg,
2368 (u32)lp_technology_ability_reg,
2369 IXGBE_TAF_SYM_PAUSE, IXGBE_TAF_ASM_PAUSE,
2370 IXGBE_TAF_SYM_PAUSE, IXGBE_TAF_ASM_PAUSE);
2374 * ixgbe_fc_autoneg - Configure flow control
2375 * @hw: pointer to hardware structure
2377 * Compares our advertised flow control capabilities to those advertised by
2378 * our link partner, and determines the proper flow control mode to use.
2380 void ixgbe_fc_autoneg(struct ixgbe_hw *hw)
2382 s32 ret_val = IXGBE_ERR_FC_NOT_NEGOTIATED;
2383 ixgbe_link_speed speed;
2387 * AN should have completed when the cable was plugged in.
2388 * Look for reasons to bail out. Bail out if:
2389 * - FC autoneg is disabled, or if
2392 * Since we're being called from an LSC, link is already known to be up.
2393 * So use link_up_wait_to_complete=false.
2395 if (hw->fc.disable_fc_autoneg)
2398 hw->mac.ops.check_link(hw, &speed, &link_up, false);
2402 switch (hw->phy.media_type) {
2403 /* Autoneg flow control on fiber adapters */
2404 case ixgbe_media_type_fiber:
2405 if (speed == IXGBE_LINK_SPEED_1GB_FULL)
2406 ret_val = ixgbe_fc_autoneg_fiber(hw);
2409 /* Autoneg flow control on backplane adapters */
2410 case ixgbe_media_type_backplane:
2411 ret_val = ixgbe_fc_autoneg_backplane(hw);
2414 /* Autoneg flow control on copper adapters */
2415 case ixgbe_media_type_copper:
2416 if (ixgbe_device_supports_autoneg_fc(hw) == 0)
2417 ret_val = ixgbe_fc_autoneg_copper(hw);
2426 hw->fc.fc_was_autonegged = true;
2428 hw->fc.fc_was_autonegged = false;
2429 hw->fc.current_mode = hw->fc.requested_mode;
2434 * ixgbe_disable_pcie_master - Disable PCI-express master access
2435 * @hw: pointer to hardware structure
2437 * Disables PCI-Express master access and verifies there are no pending
2438 * requests. IXGBE_ERR_MASTER_REQUESTS_PENDING is returned if master disable
2439 * bit hasn't caused the master requests to be disabled, else 0
2440 * is returned signifying master requests disabled.
2442 static s32 ixgbe_disable_pcie_master(struct ixgbe_hw *hw)
2444 struct ixgbe_adapter *adapter = hw->back;
2449 /* Always set this bit to ensure any future transactions are blocked */
2450 IXGBE_WRITE_REG(hw, IXGBE_CTRL, IXGBE_CTRL_GIO_DIS);
2452 /* Exit if master requests are blocked */
2453 if (!(IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_GIO))
2456 /* Poll for master request bit to clear */
2457 for (i = 0; i < IXGBE_PCI_MASTER_DISABLE_TIMEOUT; i++) {
2459 if (!(IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_GIO))
2464 * Two consecutive resets are required via CTRL.RST per datasheet
2465 * 5.2.5.3.2 Master Disable. We set a flag to inform the reset routine
2466 * of this need. The first reset prevents new master requests from
2467 * being issued by our device. We then must wait 1usec or more for any
2468 * remaining completions from the PCIe bus to trickle in, and then reset
2469 * again to clear out any effects they may have had on our device.
2471 hw_dbg(hw, "GIO Master Disable bit didn't clear - requesting resets\n");
2472 hw->mac.flags |= IXGBE_FLAGS_DOUBLE_RESET_REQUIRED;
2475 * Before proceeding, make sure that the PCIe block does not have
2476 * transactions pending.
2478 for (i = 0; i < IXGBE_PCI_MASTER_DISABLE_TIMEOUT; i++) {
2480 pci_read_config_word(adapter->pdev, IXGBE_PCI_DEVICE_STATUS,
2482 if (!(value & IXGBE_PCI_DEVICE_STATUS_TRANSACTION_PENDING))
2486 hw_dbg(hw, "PCIe transaction pending bit also did not clear.\n");
2487 status = IXGBE_ERR_MASTER_REQUESTS_PENDING;
2494 * ixgbe_acquire_swfw_sync - Acquire SWFW semaphore
2495 * @hw: pointer to hardware structure
2496 * @mask: Mask to specify which semaphore to acquire
2498 * Acquires the SWFW semaphore through the GSSR register for the specified
2499 * function (CSR, PHY0, PHY1, EEPROM, Flash)
2501 s32 ixgbe_acquire_swfw_sync(struct ixgbe_hw *hw, u16 mask)
2505 u32 fwmask = mask << 5;
2510 * SW EEPROM semaphore bit is used for access to all
2511 * SW_FW_SYNC/GSSR bits (not just EEPROM)
2513 if (ixgbe_get_eeprom_semaphore(hw))
2514 return IXGBE_ERR_SWFW_SYNC;
2516 gssr = IXGBE_READ_REG(hw, IXGBE_GSSR);
2517 if (!(gssr & (fwmask | swmask)))
2521 * Firmware currently using resource (fwmask) or other software
2522 * thread currently using resource (swmask)
2524 ixgbe_release_eeprom_semaphore(hw);
2525 usleep_range(5000, 10000);
2530 hw_dbg(hw, "Driver can't access resource, SW_FW_SYNC timeout.\n");
2531 return IXGBE_ERR_SWFW_SYNC;
2535 IXGBE_WRITE_REG(hw, IXGBE_GSSR, gssr);
2537 ixgbe_release_eeprom_semaphore(hw);
2542 * ixgbe_release_swfw_sync - Release SWFW semaphore
2543 * @hw: pointer to hardware structure
2544 * @mask: Mask to specify which semaphore to release
2546 * Releases the SWFW semaphore through the GSSR register for the specified
2547 * function (CSR, PHY0, PHY1, EEPROM, Flash)
2549 void ixgbe_release_swfw_sync(struct ixgbe_hw *hw, u16 mask)
2554 ixgbe_get_eeprom_semaphore(hw);
2556 gssr = IXGBE_READ_REG(hw, IXGBE_GSSR);
2558 IXGBE_WRITE_REG(hw, IXGBE_GSSR, gssr);
2560 ixgbe_release_eeprom_semaphore(hw);
2564 * ixgbe_disable_rx_buff_generic - Stops the receive data path
2565 * @hw: pointer to hardware structure
2567 * Stops the receive data path and waits for the HW to internally
2568 * empty the Rx security block.
2570 s32 ixgbe_disable_rx_buff_generic(struct ixgbe_hw *hw)
2572 #define IXGBE_MAX_SECRX_POLL 40
2576 secrxreg = IXGBE_READ_REG(hw, IXGBE_SECRXCTRL);
2577 secrxreg |= IXGBE_SECRXCTRL_RX_DIS;
2578 IXGBE_WRITE_REG(hw, IXGBE_SECRXCTRL, secrxreg);
2579 for (i = 0; i < IXGBE_MAX_SECRX_POLL; i++) {
2580 secrxreg = IXGBE_READ_REG(hw, IXGBE_SECRXSTAT);
2581 if (secrxreg & IXGBE_SECRXSTAT_SECRX_RDY)
2584 /* Use interrupt-safe sleep just in case */
2588 /* For informational purposes only */
2589 if (i >= IXGBE_MAX_SECRX_POLL)
2590 hw_dbg(hw, "Rx unit being enabled before security "
2591 "path fully disabled. Continuing with init.\n");
2598 * ixgbe_enable_rx_buff - Enables the receive data path
2599 * @hw: pointer to hardware structure
2601 * Enables the receive data path
2603 s32 ixgbe_enable_rx_buff_generic(struct ixgbe_hw *hw)
2607 secrxreg = IXGBE_READ_REG(hw, IXGBE_SECRXCTRL);
2608 secrxreg &= ~IXGBE_SECRXCTRL_RX_DIS;
2609 IXGBE_WRITE_REG(hw, IXGBE_SECRXCTRL, secrxreg);
2610 IXGBE_WRITE_FLUSH(hw);
2616 * ixgbe_enable_rx_dma_generic - Enable the Rx DMA unit
2617 * @hw: pointer to hardware structure
2618 * @regval: register value to write to RXCTRL
2620 * Enables the Rx DMA unit
2622 s32 ixgbe_enable_rx_dma_generic(struct ixgbe_hw *hw, u32 regval)
2624 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, regval);
2630 * ixgbe_blink_led_start_generic - Blink LED based on index.
2631 * @hw: pointer to hardware structure
2632 * @index: led number to blink
2634 s32 ixgbe_blink_led_start_generic(struct ixgbe_hw *hw, u32 index)
2636 ixgbe_link_speed speed = 0;
2637 bool link_up = false;
2638 u32 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
2639 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
2643 * Link must be up to auto-blink the LEDs;
2644 * Force it if link is down.
2646 hw->mac.ops.check_link(hw, &speed, &link_up, false);
2649 /* Need the SW/FW semaphore around AUTOC writes if 82599 and
2652 bool got_lock = false;
2654 if ((hw->mac.type == ixgbe_mac_82599EB) &&
2655 ixgbe_verify_lesm_fw_enabled_82599(hw)) {
2656 ret_val = hw->mac.ops.acquire_swfw_sync(hw,
2657 IXGBE_GSSR_MAC_CSR_SM);
2663 autoc_reg |= IXGBE_AUTOC_AN_RESTART;
2664 autoc_reg |= IXGBE_AUTOC_FLU;
2665 IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc_reg);
2666 IXGBE_WRITE_FLUSH(hw);
2669 hw->mac.ops.release_swfw_sync(hw,
2670 IXGBE_GSSR_MAC_CSR_SM);
2671 usleep_range(10000, 20000);
2674 led_reg &= ~IXGBE_LED_MODE_MASK(index);
2675 led_reg |= IXGBE_LED_BLINK(index);
2676 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
2677 IXGBE_WRITE_FLUSH(hw);
2684 * ixgbe_blink_led_stop_generic - Stop blinking LED based on index.
2685 * @hw: pointer to hardware structure
2686 * @index: led number to stop blinking
2688 s32 ixgbe_blink_led_stop_generic(struct ixgbe_hw *hw, u32 index)
2690 u32 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
2691 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
2693 bool got_lock = false;
2695 /* Need the SW/FW semaphore around AUTOC writes if 82599 and
2698 if ((hw->mac.type == ixgbe_mac_82599EB) &&
2699 ixgbe_verify_lesm_fw_enabled_82599(hw)) {
2700 ret_val = hw->mac.ops.acquire_swfw_sync(hw,
2701 IXGBE_GSSR_MAC_CSR_SM);
2708 autoc_reg &= ~IXGBE_AUTOC_FLU;
2709 autoc_reg |= IXGBE_AUTOC_AN_RESTART;
2710 IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc_reg);
2712 if (hw->mac.type == ixgbe_mac_82599EB)
2713 ixgbe_reset_pipeline_82599(hw);
2716 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_MAC_CSR_SM);
2718 led_reg &= ~IXGBE_LED_MODE_MASK(index);
2719 led_reg &= ~IXGBE_LED_BLINK(index);
2720 led_reg |= IXGBE_LED_LINK_ACTIVE << IXGBE_LED_MODE_SHIFT(index);
2721 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
2722 IXGBE_WRITE_FLUSH(hw);
2729 * ixgbe_get_san_mac_addr_offset - Get SAN MAC address offset from the EEPROM
2730 * @hw: pointer to hardware structure
2731 * @san_mac_offset: SAN MAC address offset
2733 * This function will read the EEPROM location for the SAN MAC address
2734 * pointer, and returns the value at that location. This is used in both
2735 * get and set mac_addr routines.
2737 static s32 ixgbe_get_san_mac_addr_offset(struct ixgbe_hw *hw,
2738 u16 *san_mac_offset)
2741 * First read the EEPROM pointer to see if the MAC addresses are
2744 hw->eeprom.ops.read(hw, IXGBE_SAN_MAC_ADDR_PTR, san_mac_offset);
2750 * ixgbe_get_san_mac_addr_generic - SAN MAC address retrieval from the EEPROM
2751 * @hw: pointer to hardware structure
2752 * @san_mac_addr: SAN MAC address
2754 * Reads the SAN MAC address from the EEPROM, if it's available. This is
2755 * per-port, so set_lan_id() must be called before reading the addresses.
2756 * set_lan_id() is called by identify_sfp(), but this cannot be relied
2757 * upon for non-SFP connections, so we must call it here.
2759 s32 ixgbe_get_san_mac_addr_generic(struct ixgbe_hw *hw, u8 *san_mac_addr)
2761 u16 san_mac_data, san_mac_offset;
2765 * First read the EEPROM pointer to see if the MAC addresses are
2766 * available. If they're not, no point in calling set_lan_id() here.
2768 ixgbe_get_san_mac_addr_offset(hw, &san_mac_offset);
2770 if ((san_mac_offset == 0) || (san_mac_offset == 0xFFFF)) {
2772 * No addresses available in this EEPROM. It's not an
2773 * error though, so just wipe the local address and return.
2775 for (i = 0; i < 6; i++)
2776 san_mac_addr[i] = 0xFF;
2778 goto san_mac_addr_out;
2781 /* make sure we know which port we need to program */
2782 hw->mac.ops.set_lan_id(hw);
2783 /* apply the port offset to the address offset */
2784 (hw->bus.func) ? (san_mac_offset += IXGBE_SAN_MAC_ADDR_PORT1_OFFSET) :
2785 (san_mac_offset += IXGBE_SAN_MAC_ADDR_PORT0_OFFSET);
2786 for (i = 0; i < 3; i++) {
2787 hw->eeprom.ops.read(hw, san_mac_offset, &san_mac_data);
2788 san_mac_addr[i * 2] = (u8)(san_mac_data);
2789 san_mac_addr[i * 2 + 1] = (u8)(san_mac_data >> 8);
2798 * ixgbe_get_pcie_msix_count_generic - Gets MSI-X vector count
2799 * @hw: pointer to hardware structure
2801 * Read PCIe configuration space, and get the MSI-X vector count from
2802 * the capabilities table.
2804 u16 ixgbe_get_pcie_msix_count_generic(struct ixgbe_hw *hw)
2806 struct ixgbe_adapter *adapter = hw->back;
2811 switch (hw->mac.type) {
2812 case ixgbe_mac_82598EB:
2813 pcie_offset = IXGBE_PCIE_MSIX_82598_CAPS;
2814 max_msix_count = IXGBE_MAX_MSIX_VECTORS_82598;
2816 case ixgbe_mac_82599EB:
2817 case ixgbe_mac_X540:
2818 pcie_offset = IXGBE_PCIE_MSIX_82599_CAPS;
2819 max_msix_count = IXGBE_MAX_MSIX_VECTORS_82599;
2825 pci_read_config_word(adapter->pdev, pcie_offset, &msix_count);
2826 msix_count &= IXGBE_PCIE_MSIX_TBL_SZ_MASK;
2828 /* MSI-X count is zero-based in HW */
2831 if (msix_count > max_msix_count)
2832 msix_count = max_msix_count;
2838 * ixgbe_clear_vmdq_generic - Disassociate a VMDq pool index from a rx address
2839 * @hw: pointer to hardware struct
2840 * @rar: receive address register index to disassociate
2841 * @vmdq: VMDq pool index to remove from the rar
2843 s32 ixgbe_clear_vmdq_generic(struct ixgbe_hw *hw, u32 rar, u32 vmdq)
2845 u32 mpsar_lo, mpsar_hi;
2846 u32 rar_entries = hw->mac.num_rar_entries;
2848 /* Make sure we are using a valid rar index range */
2849 if (rar >= rar_entries) {
2850 hw_dbg(hw, "RAR index %d is out of range.\n", rar);
2851 return IXGBE_ERR_INVALID_ARGUMENT;
2854 mpsar_lo = IXGBE_READ_REG(hw, IXGBE_MPSAR_LO(rar));
2855 mpsar_hi = IXGBE_READ_REG(hw, IXGBE_MPSAR_HI(rar));
2857 if (!mpsar_lo && !mpsar_hi)
2860 if (vmdq == IXGBE_CLEAR_VMDQ_ALL) {
2862 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), 0);
2866 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), 0);
2869 } else if (vmdq < 32) {
2870 mpsar_lo &= ~(1 << vmdq);
2871 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), mpsar_lo);
2873 mpsar_hi &= ~(1 << (vmdq - 32));
2874 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), mpsar_hi);
2877 /* was that the last pool using this rar? */
2878 if (mpsar_lo == 0 && mpsar_hi == 0 && rar != 0)
2879 hw->mac.ops.clear_rar(hw, rar);
2885 * ixgbe_set_vmdq_generic - Associate a VMDq pool index with a rx address
2886 * @hw: pointer to hardware struct
2887 * @rar: receive address register index to associate with a VMDq index
2888 * @vmdq: VMDq pool index
2890 s32 ixgbe_set_vmdq_generic(struct ixgbe_hw *hw, u32 rar, u32 vmdq)
2893 u32 rar_entries = hw->mac.num_rar_entries;
2895 /* Make sure we are using a valid rar index range */
2896 if (rar >= rar_entries) {
2897 hw_dbg(hw, "RAR index %d is out of range.\n", rar);
2898 return IXGBE_ERR_INVALID_ARGUMENT;
2902 mpsar = IXGBE_READ_REG(hw, IXGBE_MPSAR_LO(rar));
2904 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), mpsar);
2906 mpsar = IXGBE_READ_REG(hw, IXGBE_MPSAR_HI(rar));
2907 mpsar |= 1 << (vmdq - 32);
2908 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), mpsar);
2914 * This function should only be involved in the IOV mode.
2915 * In IOV mode, Default pool is next pool after the number of
2916 * VFs advertized and not 0.
2917 * MPSAR table needs to be updated for SAN_MAC RAR [hw->mac.san_mac_rar_index]
2919 * ixgbe_set_vmdq_san_mac - Associate default VMDq pool index with a rx address
2920 * @hw: pointer to hardware struct
2921 * @vmdq: VMDq pool index
2923 s32 ixgbe_set_vmdq_san_mac_generic(struct ixgbe_hw *hw, u32 vmdq)
2925 u32 rar = hw->mac.san_mac_rar_index;
2928 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), 1 << vmdq);
2929 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), 0);
2931 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), 0);
2932 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), 1 << (vmdq - 32));
2939 * ixgbe_init_uta_tables_generic - Initialize the Unicast Table Array
2940 * @hw: pointer to hardware structure
2942 s32 ixgbe_init_uta_tables_generic(struct ixgbe_hw *hw)
2946 for (i = 0; i < 128; i++)
2947 IXGBE_WRITE_REG(hw, IXGBE_UTA(i), 0);
2953 * ixgbe_find_vlvf_slot - find the vlanid or the first empty slot
2954 * @hw: pointer to hardware structure
2955 * @vlan: VLAN id to write to VLAN filter
2957 * return the VLVF index where this VLAN id should be placed
2960 static s32 ixgbe_find_vlvf_slot(struct ixgbe_hw *hw, u32 vlan)
2963 u32 first_empty_slot = 0;
2966 /* short cut the special case */
2971 * Search for the vlan id in the VLVF entries. Save off the first empty
2972 * slot found along the way
2974 for (regindex = 1; regindex < IXGBE_VLVF_ENTRIES; regindex++) {
2975 bits = IXGBE_READ_REG(hw, IXGBE_VLVF(regindex));
2976 if (!bits && !(first_empty_slot))
2977 first_empty_slot = regindex;
2978 else if ((bits & 0x0FFF) == vlan)
2983 * If regindex is less than IXGBE_VLVF_ENTRIES, then we found the vlan
2984 * in the VLVF. Else use the first empty VLVF register for this
2987 if (regindex >= IXGBE_VLVF_ENTRIES) {
2988 if (first_empty_slot)
2989 regindex = first_empty_slot;
2991 hw_dbg(hw, "No space in VLVF.\n");
2992 regindex = IXGBE_ERR_NO_SPACE;
3000 * ixgbe_set_vfta_generic - Set VLAN filter table
3001 * @hw: pointer to hardware structure
3002 * @vlan: VLAN id to write to VLAN filter
3003 * @vind: VMDq output index that maps queue to VLAN id in VFVFB
3004 * @vlan_on: boolean flag to turn on/off VLAN in VFVF
3006 * Turn on/off specified VLAN in the VLAN filter table.
3008 s32 ixgbe_set_vfta_generic(struct ixgbe_hw *hw, u32 vlan, u32 vind,
3017 bool vfta_changed = false;
3020 return IXGBE_ERR_PARAM;
3023 * this is a 2 part operation - first the VFTA, then the
3024 * VLVF and VLVFB if VT Mode is set
3025 * We don't write the VFTA until we know the VLVF part succeeded.
3029 * The VFTA is a bitstring made up of 128 32-bit registers
3030 * that enable the particular VLAN id, much like the MTA:
3031 * bits[11-5]: which register
3032 * bits[4-0]: which bit in the register
3034 regindex = (vlan >> 5) & 0x7F;
3035 bitindex = vlan & 0x1F;
3036 targetbit = (1 << bitindex);
3037 vfta = IXGBE_READ_REG(hw, IXGBE_VFTA(regindex));
3040 if (!(vfta & targetbit)) {
3042 vfta_changed = true;
3045 if ((vfta & targetbit)) {
3047 vfta_changed = true;
3054 * make sure the vlan is in VLVF
3055 * set the vind bit in the matching VLVFB
3057 * clear the pool bit and possibly the vind
3059 vt = IXGBE_READ_REG(hw, IXGBE_VT_CTL);
3060 if (vt & IXGBE_VT_CTL_VT_ENABLE) {
3063 vlvf_index = ixgbe_find_vlvf_slot(hw, vlan);
3068 /* set the pool bit */
3070 bits = IXGBE_READ_REG(hw,
3071 IXGBE_VLVFB(vlvf_index*2));
3072 bits |= (1 << vind);
3074 IXGBE_VLVFB(vlvf_index*2),
3077 bits = IXGBE_READ_REG(hw,
3078 IXGBE_VLVFB((vlvf_index*2)+1));
3079 bits |= (1 << (vind-32));
3081 IXGBE_VLVFB((vlvf_index*2)+1),
3085 /* clear the pool bit */
3087 bits = IXGBE_READ_REG(hw,
3088 IXGBE_VLVFB(vlvf_index*2));
3089 bits &= ~(1 << vind);
3091 IXGBE_VLVFB(vlvf_index*2),
3093 bits |= IXGBE_READ_REG(hw,
3094 IXGBE_VLVFB((vlvf_index*2)+1));
3096 bits = IXGBE_READ_REG(hw,
3097 IXGBE_VLVFB((vlvf_index*2)+1));
3098 bits &= ~(1 << (vind-32));
3100 IXGBE_VLVFB((vlvf_index*2)+1),
3102 bits |= IXGBE_READ_REG(hw,
3103 IXGBE_VLVFB(vlvf_index*2));
3108 * If there are still bits set in the VLVFB registers
3109 * for the VLAN ID indicated we need to see if the
3110 * caller is requesting that we clear the VFTA entry bit.
3111 * If the caller has requested that we clear the VFTA
3112 * entry bit but there are still pools/VFs using this VLAN
3113 * ID entry then ignore the request. We're not worried
3114 * about the case where we're turning the VFTA VLAN ID
3115 * entry bit on, only when requested to turn it off as
3116 * there may be multiple pools and/or VFs using the
3117 * VLAN ID entry. In that case we cannot clear the
3118 * VFTA bit until all pools/VFs using that VLAN ID have also
3119 * been cleared. This will be indicated by "bits" being
3123 IXGBE_WRITE_REG(hw, IXGBE_VLVF(vlvf_index),
3124 (IXGBE_VLVF_VIEN | vlan));
3126 /* someone wants to clear the vfta entry
3127 * but some pools/VFs are still using it.
3129 vfta_changed = false;
3133 IXGBE_WRITE_REG(hw, IXGBE_VLVF(vlvf_index), 0);
3137 IXGBE_WRITE_REG(hw, IXGBE_VFTA(regindex), vfta);
3143 * ixgbe_clear_vfta_generic - Clear VLAN filter table
3144 * @hw: pointer to hardware structure
3146 * Clears the VLAN filer table, and the VMDq index associated with the filter
3148 s32 ixgbe_clear_vfta_generic(struct ixgbe_hw *hw)
3152 for (offset = 0; offset < hw->mac.vft_size; offset++)
3153 IXGBE_WRITE_REG(hw, IXGBE_VFTA(offset), 0);
3155 for (offset = 0; offset < IXGBE_VLVF_ENTRIES; offset++) {
3156 IXGBE_WRITE_REG(hw, IXGBE_VLVF(offset), 0);
3157 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(offset*2), 0);
3158 IXGBE_WRITE_REG(hw, IXGBE_VLVFB((offset*2)+1), 0);
3165 * ixgbe_check_mac_link_generic - Determine link and speed status
3166 * @hw: pointer to hardware structure
3167 * @speed: pointer to link speed
3168 * @link_up: true when link is up
3169 * @link_up_wait_to_complete: bool used to wait for link up or not
3171 * Reads the links register to determine if link is up and the current speed
3173 s32 ixgbe_check_mac_link_generic(struct ixgbe_hw *hw, ixgbe_link_speed *speed,
3174 bool *link_up, bool link_up_wait_to_complete)
3176 u32 links_reg, links_orig;
3179 /* clear the old state */
3180 links_orig = IXGBE_READ_REG(hw, IXGBE_LINKS);
3182 links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
3184 if (links_orig != links_reg) {
3185 hw_dbg(hw, "LINKS changed from %08X to %08X\n",
3186 links_orig, links_reg);
3189 if (link_up_wait_to_complete) {
3190 for (i = 0; i < IXGBE_LINK_UP_TIME; i++) {
3191 if (links_reg & IXGBE_LINKS_UP) {
3198 links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
3201 if (links_reg & IXGBE_LINKS_UP)
3207 if ((links_reg & IXGBE_LINKS_SPEED_82599) ==
3208 IXGBE_LINKS_SPEED_10G_82599)
3209 *speed = IXGBE_LINK_SPEED_10GB_FULL;
3210 else if ((links_reg & IXGBE_LINKS_SPEED_82599) ==
3211 IXGBE_LINKS_SPEED_1G_82599)
3212 *speed = IXGBE_LINK_SPEED_1GB_FULL;
3213 else if ((links_reg & IXGBE_LINKS_SPEED_82599) ==
3214 IXGBE_LINKS_SPEED_100_82599)
3215 *speed = IXGBE_LINK_SPEED_100_FULL;
3217 *speed = IXGBE_LINK_SPEED_UNKNOWN;
3223 * ixgbe_get_wwn_prefix_generic - Get alternative WWNN/WWPN prefix from
3225 * @hw: pointer to hardware structure
3226 * @wwnn_prefix: the alternative WWNN prefix
3227 * @wwpn_prefix: the alternative WWPN prefix
3229 * This function will read the EEPROM from the alternative SAN MAC address
3230 * block to check the support for the alternative WWNN/WWPN prefix support.
3232 s32 ixgbe_get_wwn_prefix_generic(struct ixgbe_hw *hw, u16 *wwnn_prefix,
3236 u16 alt_san_mac_blk_offset;
3238 /* clear output first */
3239 *wwnn_prefix = 0xFFFF;
3240 *wwpn_prefix = 0xFFFF;
3242 /* check if alternative SAN MAC is supported */
3243 hw->eeprom.ops.read(hw, IXGBE_ALT_SAN_MAC_ADDR_BLK_PTR,
3244 &alt_san_mac_blk_offset);
3246 if ((alt_san_mac_blk_offset == 0) ||
3247 (alt_san_mac_blk_offset == 0xFFFF))
3248 goto wwn_prefix_out;
3250 /* check capability in alternative san mac address block */
3251 offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_CAPS_OFFSET;
3252 hw->eeprom.ops.read(hw, offset, &caps);
3253 if (!(caps & IXGBE_ALT_SAN_MAC_ADDR_CAPS_ALTWWN))
3254 goto wwn_prefix_out;
3256 /* get the corresponding prefix for WWNN/WWPN */
3257 offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_WWNN_OFFSET;
3258 hw->eeprom.ops.read(hw, offset, wwnn_prefix);
3260 offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_WWPN_OFFSET;
3261 hw->eeprom.ops.read(hw, offset, wwpn_prefix);
3268 * ixgbe_set_mac_anti_spoofing - Enable/Disable MAC anti-spoofing
3269 * @hw: pointer to hardware structure
3270 * @enable: enable or disable switch for anti-spoofing
3271 * @pf: Physical Function pool - do not enable anti-spoofing for the PF
3274 void ixgbe_set_mac_anti_spoofing(struct ixgbe_hw *hw, bool enable, int pf)
3277 int pf_target_reg = pf >> 3;
3278 int pf_target_shift = pf % 8;
3281 if (hw->mac.type == ixgbe_mac_82598EB)
3285 pfvfspoof = IXGBE_SPOOF_MACAS_MASK;
3288 * PFVFSPOOF register array is size 8 with 8 bits assigned to
3289 * MAC anti-spoof enables in each register array element.
3291 for (j = 0; j < pf_target_reg; j++)
3292 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(j), pfvfspoof);
3295 * The PF should be allowed to spoof so that it can support
3296 * emulation mode NICs. Do not set the bits assigned to the PF
3298 pfvfspoof &= (1 << pf_target_shift) - 1;
3299 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(j), pfvfspoof);
3302 * Remaining pools belong to the PF so they do not need to have
3303 * anti-spoofing enabled.
3305 for (j++; j < IXGBE_PFVFSPOOF_REG_COUNT; j++)
3306 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(j), 0);
3310 * ixgbe_set_vlan_anti_spoofing - Enable/Disable VLAN anti-spoofing
3311 * @hw: pointer to hardware structure
3312 * @enable: enable or disable switch for VLAN anti-spoofing
3313 * @pf: Virtual Function pool - VF Pool to set for VLAN anti-spoofing
3316 void ixgbe_set_vlan_anti_spoofing(struct ixgbe_hw *hw, bool enable, int vf)
3318 int vf_target_reg = vf >> 3;
3319 int vf_target_shift = vf % 8 + IXGBE_SPOOF_VLANAS_SHIFT;
3322 if (hw->mac.type == ixgbe_mac_82598EB)
3325 pfvfspoof = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg));
3327 pfvfspoof |= (1 << vf_target_shift);
3329 pfvfspoof &= ~(1 << vf_target_shift);
3330 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), pfvfspoof);
3334 * ixgbe_get_device_caps_generic - Get additional device capabilities
3335 * @hw: pointer to hardware structure
3336 * @device_caps: the EEPROM word with the extra device capabilities
3338 * This function will read the EEPROM location for the device capabilities,
3339 * and return the word through device_caps.
3341 s32 ixgbe_get_device_caps_generic(struct ixgbe_hw *hw, u16 *device_caps)
3343 hw->eeprom.ops.read(hw, IXGBE_DEVICE_CAPS, device_caps);
3349 * ixgbe_set_rxpba_generic - Initialize RX packet buffer
3350 * @hw: pointer to hardware structure
3351 * @num_pb: number of packet buffers to allocate
3352 * @headroom: reserve n KB of headroom
3353 * @strategy: packet buffer allocation strategy
3355 void ixgbe_set_rxpba_generic(struct ixgbe_hw *hw,
3360 u32 pbsize = hw->mac.rx_pb_size;
3362 u32 rxpktsize, txpktsize, txpbthresh;
3364 /* Reserve headroom */
3370 /* Divide remaining packet buffer space amongst the number
3371 * of packet buffers requested using supplied strategy.
3374 case (PBA_STRATEGY_WEIGHTED):
3375 /* pba_80_48 strategy weight first half of packet buffer with
3376 * 5/8 of the packet buffer space.
3378 rxpktsize = ((pbsize * 5 * 2) / (num_pb * 8));
3379 pbsize -= rxpktsize * (num_pb / 2);
3380 rxpktsize <<= IXGBE_RXPBSIZE_SHIFT;
3381 for (; i < (num_pb / 2); i++)
3382 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpktsize);
3383 /* Fall through to configure remaining packet buffers */
3384 case (PBA_STRATEGY_EQUAL):
3385 /* Divide the remaining Rx packet buffer evenly among the TCs */
3386 rxpktsize = (pbsize / (num_pb - i)) << IXGBE_RXPBSIZE_SHIFT;
3387 for (; i < num_pb; i++)
3388 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpktsize);
3395 * Setup Tx packet buffer and threshold equally for all TCs
3396 * TXPBTHRESH register is set in K so divide by 1024 and subtract
3397 * 10 since the largest packet we support is just over 9K.
3399 txpktsize = IXGBE_TXPBSIZE_MAX / num_pb;
3400 txpbthresh = (txpktsize / 1024) - IXGBE_TXPKT_SIZE_MAX;
3401 for (i = 0; i < num_pb; i++) {
3402 IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), txpktsize);
3403 IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), txpbthresh);
3406 /* Clear unused TCs, if any, to zero buffer size*/
3407 for (; i < IXGBE_MAX_PB; i++) {
3408 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), 0);
3409 IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), 0);
3410 IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), 0);
3415 * ixgbe_calculate_checksum - Calculate checksum for buffer
3416 * @buffer: pointer to EEPROM
3417 * @length: size of EEPROM to calculate a checksum for
3419 * Calculates the checksum for some buffer on a specified length. The
3420 * checksum calculated is returned.
3422 static u8 ixgbe_calculate_checksum(u8 *buffer, u32 length)
3430 for (i = 0; i < length; i++)
3433 return (u8) (0 - sum);
3437 * ixgbe_host_interface_command - Issue command to manageability block
3438 * @hw: pointer to the HW structure
3439 * @buffer: contains the command to write and where the return status will
3441 * @length: length of buffer, must be multiple of 4 bytes
3443 * Communicates with the manageability block. On success return 0
3444 * else return IXGBE_ERR_HOST_INTERFACE_COMMAND.
3446 static s32 ixgbe_host_interface_command(struct ixgbe_hw *hw, u32 *buffer,
3450 u32 hdr_size = sizeof(struct ixgbe_hic_hdr);
3451 u8 buf_len, dword_len;
3455 if (length == 0 || length & 0x3 ||
3456 length > IXGBE_HI_MAX_BLOCK_BYTE_LENGTH) {
3457 hw_dbg(hw, "Buffer length failure.\n");
3458 ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND;
3462 /* Check that the host interface is enabled. */
3463 hicr = IXGBE_READ_REG(hw, IXGBE_HICR);
3464 if ((hicr & IXGBE_HICR_EN) == 0) {
3465 hw_dbg(hw, "IXGBE_HOST_EN bit disabled.\n");
3466 ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND;
3470 /* Calculate length in DWORDs */
3471 dword_len = length >> 2;
3474 * The device driver writes the relevant command block
3475 * into the ram area.
3477 for (i = 0; i < dword_len; i++)
3478 IXGBE_WRITE_REG_ARRAY(hw, IXGBE_FLEX_MNG,
3479 i, cpu_to_le32(buffer[i]));
3481 /* Setting this bit tells the ARC that a new command is pending. */
3482 IXGBE_WRITE_REG(hw, IXGBE_HICR, hicr | IXGBE_HICR_C);
3484 for (i = 0; i < IXGBE_HI_COMMAND_TIMEOUT; i++) {
3485 hicr = IXGBE_READ_REG(hw, IXGBE_HICR);
3486 if (!(hicr & IXGBE_HICR_C))
3488 usleep_range(1000, 2000);
3491 /* Check command successful completion. */
3492 if (i == IXGBE_HI_COMMAND_TIMEOUT ||
3493 (!(IXGBE_READ_REG(hw, IXGBE_HICR) & IXGBE_HICR_SV))) {
3494 hw_dbg(hw, "Command has failed with no status valid.\n");
3495 ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND;
3499 /* Calculate length in DWORDs */
3500 dword_len = hdr_size >> 2;
3502 /* first pull in the header so we know the buffer length */
3503 for (bi = 0; bi < dword_len; bi++) {
3504 buffer[bi] = IXGBE_READ_REG_ARRAY(hw, IXGBE_FLEX_MNG, bi);
3505 le32_to_cpus(&buffer[bi]);
3508 /* If there is any thing in data position pull it in */
3509 buf_len = ((struct ixgbe_hic_hdr *)buffer)->buf_len;
3513 if (length < (buf_len + hdr_size)) {
3514 hw_dbg(hw, "Buffer not large enough for reply message.\n");
3515 ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND;
3519 /* Calculate length in DWORDs, add 3 for odd lengths */
3520 dword_len = (buf_len + 3) >> 2;
3522 /* Pull in the rest of the buffer (bi is where we left off)*/
3523 for (; bi <= dword_len; bi++) {
3524 buffer[bi] = IXGBE_READ_REG_ARRAY(hw, IXGBE_FLEX_MNG, bi);
3525 le32_to_cpus(&buffer[bi]);
3533 * ixgbe_set_fw_drv_ver_generic - Sends driver version to firmware
3534 * @hw: pointer to the HW structure
3535 * @maj: driver version major number
3536 * @min: driver version minor number
3537 * @build: driver version build number
3538 * @sub: driver version sub build number
3540 * Sends driver version number to firmware through the manageability
3541 * block. On success return 0
3542 * else returns IXGBE_ERR_SWFW_SYNC when encountering an error acquiring
3543 * semaphore or IXGBE_ERR_HOST_INTERFACE_COMMAND when command fails.
3545 s32 ixgbe_set_fw_drv_ver_generic(struct ixgbe_hw *hw, u8 maj, u8 min,
3548 struct ixgbe_hic_drv_info fw_cmd;
3552 if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_SW_MNG_SM) != 0) {
3553 ret_val = IXGBE_ERR_SWFW_SYNC;
3557 fw_cmd.hdr.cmd = FW_CEM_CMD_DRIVER_INFO;
3558 fw_cmd.hdr.buf_len = FW_CEM_CMD_DRIVER_INFO_LEN;
3559 fw_cmd.hdr.cmd_or_resp.cmd_resv = FW_CEM_CMD_RESERVED;
3560 fw_cmd.port_num = (u8)hw->bus.func;
3561 fw_cmd.ver_maj = maj;
3562 fw_cmd.ver_min = min;
3563 fw_cmd.ver_build = build;
3564 fw_cmd.ver_sub = sub;
3565 fw_cmd.hdr.checksum = 0;
3566 fw_cmd.hdr.checksum = ixgbe_calculate_checksum((u8 *)&fw_cmd,
3567 (FW_CEM_HDR_LEN + fw_cmd.hdr.buf_len));
3571 for (i = 0; i <= FW_CEM_MAX_RETRIES; i++) {
3572 ret_val = ixgbe_host_interface_command(hw, (u32 *)&fw_cmd,
3577 if (fw_cmd.hdr.cmd_or_resp.ret_status ==
3578 FW_CEM_RESP_STATUS_SUCCESS)
3581 ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND;
3586 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_SW_MNG_SM);
3592 * ixgbe_clear_tx_pending - Clear pending TX work from the PCIe fifo
3593 * @hw: pointer to the hardware structure
3595 * The 82599 and x540 MACs can experience issues if TX work is still pending
3596 * when a reset occurs. This function prevents this by flushing the PCIe
3597 * buffers on the system.
3599 void ixgbe_clear_tx_pending(struct ixgbe_hw *hw)
3601 u32 gcr_ext, hlreg0;
3604 * If double reset is not requested then all transactions should
3605 * already be clear and as such there is no work to do
3607 if (!(hw->mac.flags & IXGBE_FLAGS_DOUBLE_RESET_REQUIRED))
3611 * Set loopback enable to prevent any transmits from being sent
3612 * should the link come up. This assumes that the RXCTRL.RXEN bit
3613 * has already been cleared.
3615 hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0);
3616 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0 | IXGBE_HLREG0_LPBK);
3618 /* initiate cleaning flow for buffers in the PCIe transaction layer */
3619 gcr_ext = IXGBE_READ_REG(hw, IXGBE_GCR_EXT);
3620 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT,
3621 gcr_ext | IXGBE_GCR_EXT_BUFFERS_CLEAR);
3623 /* Flush all writes and allow 20usec for all transactions to clear */
3624 IXGBE_WRITE_FLUSH(hw);
3627 /* restore previous register values */
3628 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, gcr_ext);
3629 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0);
3632 static const u8 ixgbe_emc_temp_data[4] = {
3633 IXGBE_EMC_INTERNAL_DATA,
3634 IXGBE_EMC_DIODE1_DATA,
3635 IXGBE_EMC_DIODE2_DATA,
3636 IXGBE_EMC_DIODE3_DATA
3638 static const u8 ixgbe_emc_therm_limit[4] = {
3639 IXGBE_EMC_INTERNAL_THERM_LIMIT,
3640 IXGBE_EMC_DIODE1_THERM_LIMIT,
3641 IXGBE_EMC_DIODE2_THERM_LIMIT,
3642 IXGBE_EMC_DIODE3_THERM_LIMIT
3646 * ixgbe_get_ets_data - Extracts the ETS bit data
3647 * @hw: pointer to hardware structure
3648 * @ets_cfg: extected ETS data
3649 * @ets_offset: offset of ETS data
3651 * Returns error code.
3653 static s32 ixgbe_get_ets_data(struct ixgbe_hw *hw, u16 *ets_cfg,
3658 status = hw->eeprom.ops.read(hw, IXGBE_ETS_CFG, ets_offset);
3662 if ((*ets_offset == 0x0000) || (*ets_offset == 0xFFFF)) {
3663 status = IXGBE_NOT_IMPLEMENTED;
3667 status = hw->eeprom.ops.read(hw, *ets_offset, ets_cfg);
3671 if ((*ets_cfg & IXGBE_ETS_TYPE_MASK) != IXGBE_ETS_TYPE_EMC_SHIFTED) {
3672 status = IXGBE_NOT_IMPLEMENTED;
3681 * ixgbe_get_thermal_sensor_data - Gathers thermal sensor data
3682 * @hw: pointer to hardware structure
3684 * Returns the thermal sensor data structure
3686 s32 ixgbe_get_thermal_sensor_data_generic(struct ixgbe_hw *hw)
3694 struct ixgbe_thermal_sensor_data *data = &hw->mac.thermal_sensor_data;
3696 /* Only support thermal sensors attached to physical port 0 */
3697 if ((IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1)) {
3698 status = IXGBE_NOT_IMPLEMENTED;
3702 status = ixgbe_get_ets_data(hw, &ets_cfg, &ets_offset);
3706 num_sensors = (ets_cfg & IXGBE_ETS_NUM_SENSORS_MASK);
3707 if (num_sensors > IXGBE_MAX_SENSORS)
3708 num_sensors = IXGBE_MAX_SENSORS;
3710 for (i = 0; i < num_sensors; i++) {
3714 status = hw->eeprom.ops.read(hw, (ets_offset + 1 + i),
3719 sensor_index = ((ets_sensor & IXGBE_ETS_DATA_INDEX_MASK) >>
3720 IXGBE_ETS_DATA_INDEX_SHIFT);
3721 sensor_location = ((ets_sensor & IXGBE_ETS_DATA_LOC_MASK) >>
3722 IXGBE_ETS_DATA_LOC_SHIFT);
3724 if (sensor_location != 0) {
3725 status = hw->phy.ops.read_i2c_byte(hw,
3726 ixgbe_emc_temp_data[sensor_index],
3727 IXGBE_I2C_THERMAL_SENSOR_ADDR,
3728 &data->sensor[i].temp);
3738 * ixgbe_init_thermal_sensor_thresh_generic - Inits thermal sensor thresholds
3739 * @hw: pointer to hardware structure
3741 * Inits the thermal sensor thresholds according to the NVM map
3742 * and save off the threshold and location values into mac.thermal_sensor_data
3744 s32 ixgbe_init_thermal_sensor_thresh_generic(struct ixgbe_hw *hw)
3750 u8 low_thresh_delta;
3754 struct ixgbe_thermal_sensor_data *data = &hw->mac.thermal_sensor_data;
3756 memset(data, 0, sizeof(struct ixgbe_thermal_sensor_data));
3758 /* Only support thermal sensors attached to physical port 0 */
3759 if ((IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1)) {
3760 status = IXGBE_NOT_IMPLEMENTED;
3764 status = ixgbe_get_ets_data(hw, &ets_cfg, &ets_offset);
3768 low_thresh_delta = ((ets_cfg & IXGBE_ETS_LTHRES_DELTA_MASK) >>
3769 IXGBE_ETS_LTHRES_DELTA_SHIFT);
3770 num_sensors = (ets_cfg & IXGBE_ETS_NUM_SENSORS_MASK);
3771 if (num_sensors > IXGBE_MAX_SENSORS)
3772 num_sensors = IXGBE_MAX_SENSORS;
3774 for (i = 0; i < num_sensors; i++) {
3778 hw->eeprom.ops.read(hw, (ets_offset + 1 + i), &ets_sensor);
3779 sensor_index = ((ets_sensor & IXGBE_ETS_DATA_INDEX_MASK) >>
3780 IXGBE_ETS_DATA_INDEX_SHIFT);
3781 sensor_location = ((ets_sensor & IXGBE_ETS_DATA_LOC_MASK) >>
3782 IXGBE_ETS_DATA_LOC_SHIFT);
3783 therm_limit = ets_sensor & IXGBE_ETS_DATA_HTHRESH_MASK;
3785 hw->phy.ops.write_i2c_byte(hw,
3786 ixgbe_emc_therm_limit[sensor_index],
3787 IXGBE_I2C_THERMAL_SENSOR_ADDR, therm_limit);
3789 if (sensor_location == 0)
3792 data->sensor[i].location = sensor_location;
3793 data->sensor[i].caution_thresh = therm_limit;
3794 data->sensor[i].max_op_thresh = therm_limit - low_thresh_delta;