1 /*******************************************************************************
3 Intel 10 Gigabit PCI Express Linux driver
4 Copyright(c) 1999 - 2011 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>
33 #include "ixgbe_phy.h"
35 #define IXGBE_82598_MAX_TX_QUEUES 32
36 #define IXGBE_82598_MAX_RX_QUEUES 64
37 #define IXGBE_82598_RAR_ENTRIES 16
38 #define IXGBE_82598_MC_TBL_SIZE 128
39 #define IXGBE_82598_VFT_TBL_SIZE 128
41 static s32
ixgbe_setup_copper_link_82598(struct ixgbe_hw
*hw
,
42 ixgbe_link_speed speed
,
44 bool autoneg_wait_to_complete
);
45 static s32
ixgbe_read_i2c_eeprom_82598(struct ixgbe_hw
*hw
, u8 byte_offset
,
49 * ixgbe_set_pcie_completion_timeout - set pci-e completion timeout
50 * @hw: pointer to the HW structure
52 * The defaults for 82598 should be in the range of 50us to 50ms,
53 * however the hardware default for these parts is 500us to 1ms which is less
54 * than the 10ms recommended by the pci-e spec. To address this we need to
55 * increase the value to either 10ms to 250ms for capability version 1 config,
56 * or 16ms to 55ms for version 2.
58 static void ixgbe_set_pcie_completion_timeout(struct ixgbe_hw
*hw
)
60 struct ixgbe_adapter
*adapter
= hw
->back
;
61 u32 gcr
= IXGBE_READ_REG(hw
, IXGBE_GCR
);
64 /* only take action if timeout value is defaulted to 0 */
65 if (gcr
& IXGBE_GCR_CMPL_TMOUT_MASK
)
69 * if capababilities version is type 1 we can write the
70 * timeout of 10ms to 250ms through the GCR register
72 if (!(gcr
& IXGBE_GCR_CAP_VER2
)) {
73 gcr
|= IXGBE_GCR_CMPL_TMOUT_10ms
;
78 * for version 2 capabilities we need to write the config space
79 * directly in order to set the completion timeout value for
82 pci_read_config_word(adapter
->pdev
,
83 IXGBE_PCI_DEVICE_CONTROL2
, &pcie_devctl2
);
84 pcie_devctl2
|= IXGBE_PCI_DEVICE_CONTROL2_16ms
;
85 pci_write_config_word(adapter
->pdev
,
86 IXGBE_PCI_DEVICE_CONTROL2
, pcie_devctl2
);
88 /* disable completion timeout resend */
89 gcr
&= ~IXGBE_GCR_CMPL_TMOUT_RESEND
;
90 IXGBE_WRITE_REG(hw
, IXGBE_GCR
, gcr
);
94 * ixgbe_get_pcie_msix_count_82598 - Gets MSI-X vector count
95 * @hw: pointer to hardware structure
97 * Read PCIe configuration space, and get the MSI-X vector count from
98 * the capabilities table.
100 static u16
ixgbe_get_pcie_msix_count_82598(struct ixgbe_hw
*hw
)
102 struct ixgbe_adapter
*adapter
= hw
->back
;
104 pci_read_config_word(adapter
->pdev
, IXGBE_PCIE_MSIX_82598_CAPS
,
106 msix_count
&= IXGBE_PCIE_MSIX_TBL_SZ_MASK
;
108 /* MSI-X count is zero-based in HW, so increment to give proper value */
116 static s32
ixgbe_get_invariants_82598(struct ixgbe_hw
*hw
)
118 struct ixgbe_mac_info
*mac
= &hw
->mac
;
120 /* Call PHY identify routine to get the phy type */
121 ixgbe_identify_phy_generic(hw
);
123 mac
->mcft_size
= IXGBE_82598_MC_TBL_SIZE
;
124 mac
->vft_size
= IXGBE_82598_VFT_TBL_SIZE
;
125 mac
->num_rar_entries
= IXGBE_82598_RAR_ENTRIES
;
126 mac
->max_rx_queues
= IXGBE_82598_MAX_RX_QUEUES
;
127 mac
->max_tx_queues
= IXGBE_82598_MAX_TX_QUEUES
;
128 mac
->max_msix_vectors
= ixgbe_get_pcie_msix_count_82598(hw
);
134 * ixgbe_init_phy_ops_82598 - PHY/SFP specific init
135 * @hw: pointer to hardware structure
137 * Initialize any function pointers that were not able to be
138 * set during get_invariants because the PHY/SFP type was
139 * not known. Perform the SFP init if necessary.
142 static s32
ixgbe_init_phy_ops_82598(struct ixgbe_hw
*hw
)
144 struct ixgbe_mac_info
*mac
= &hw
->mac
;
145 struct ixgbe_phy_info
*phy
= &hw
->phy
;
147 u16 list_offset
, data_offset
;
149 /* Identify the PHY */
150 phy
->ops
.identify(hw
);
152 /* Overwrite the link function pointers if copper PHY */
153 if (mac
->ops
.get_media_type(hw
) == ixgbe_media_type_copper
) {
154 mac
->ops
.setup_link
= &ixgbe_setup_copper_link_82598
;
155 mac
->ops
.get_link_capabilities
=
156 &ixgbe_get_copper_link_capabilities_generic
;
159 switch (hw
->phy
.type
) {
161 phy
->ops
.setup_link
= &ixgbe_setup_phy_link_tnx
;
162 phy
->ops
.check_link
= &ixgbe_check_phy_link_tnx
;
163 phy
->ops
.get_firmware_version
=
164 &ixgbe_get_phy_firmware_version_tnx
;
167 phy
->ops
.reset
= &ixgbe_reset_phy_nl
;
169 /* Call SFP+ identify routine to get the SFP+ module type */
170 ret_val
= phy
->ops
.identify_sfp(hw
);
173 else if (hw
->phy
.sfp_type
== ixgbe_sfp_type_unknown
) {
174 ret_val
= IXGBE_ERR_SFP_NOT_SUPPORTED
;
178 /* Check to see if SFP+ module is supported */
179 ret_val
= ixgbe_get_sfp_init_sequence_offsets(hw
,
183 ret_val
= IXGBE_ERR_SFP_NOT_SUPPORTED
;
196 * ixgbe_start_hw_82598 - Prepare hardware for Tx/Rx
197 * @hw: pointer to hardware structure
199 * Starts the hardware using the generic start_hw function.
200 * Then set pcie completion timeout
202 static s32
ixgbe_start_hw_82598(struct ixgbe_hw
*hw
)
206 ret_val
= ixgbe_start_hw_generic(hw
);
208 /* set the completion timeout for interface */
210 ixgbe_set_pcie_completion_timeout(hw
);
216 * ixgbe_get_link_capabilities_82598 - Determines link capabilities
217 * @hw: pointer to hardware structure
218 * @speed: pointer to link speed
219 * @autoneg: boolean auto-negotiation value
221 * Determines the link capabilities by reading the AUTOC register.
223 static s32
ixgbe_get_link_capabilities_82598(struct ixgbe_hw
*hw
,
224 ixgbe_link_speed
*speed
,
231 * Determine link capabilities based on the stored value of AUTOC,
232 * which represents EEPROM defaults. If AUTOC value has not been
233 * stored, use the current register value.
235 if (hw
->mac
.orig_link_settings_stored
)
236 autoc
= hw
->mac
.orig_autoc
;
238 autoc
= IXGBE_READ_REG(hw
, IXGBE_AUTOC
);
240 switch (autoc
& IXGBE_AUTOC_LMS_MASK
) {
241 case IXGBE_AUTOC_LMS_1G_LINK_NO_AN
:
242 *speed
= IXGBE_LINK_SPEED_1GB_FULL
;
246 case IXGBE_AUTOC_LMS_10G_LINK_NO_AN
:
247 *speed
= IXGBE_LINK_SPEED_10GB_FULL
;
251 case IXGBE_AUTOC_LMS_1G_AN
:
252 *speed
= IXGBE_LINK_SPEED_1GB_FULL
;
256 case IXGBE_AUTOC_LMS_KX4_AN
:
257 case IXGBE_AUTOC_LMS_KX4_AN_1G_AN
:
258 *speed
= IXGBE_LINK_SPEED_UNKNOWN
;
259 if (autoc
& IXGBE_AUTOC_KX4_SUPP
)
260 *speed
|= IXGBE_LINK_SPEED_10GB_FULL
;
261 if (autoc
& IXGBE_AUTOC_KX_SUPP
)
262 *speed
|= IXGBE_LINK_SPEED_1GB_FULL
;
267 status
= IXGBE_ERR_LINK_SETUP
;
275 * ixgbe_get_media_type_82598 - Determines media type
276 * @hw: pointer to hardware structure
278 * Returns the media type (fiber, copper, backplane)
280 static enum ixgbe_media_type
ixgbe_get_media_type_82598(struct ixgbe_hw
*hw
)
282 enum ixgbe_media_type media_type
;
284 /* Detect if there is a copper PHY attached. */
285 switch (hw
->phy
.type
) {
286 case ixgbe_phy_cu_unknown
:
289 media_type
= ixgbe_media_type_copper
;
295 /* Media type for I82598 is based on device ID */
296 switch (hw
->device_id
) {
297 case IXGBE_DEV_ID_82598
:
298 case IXGBE_DEV_ID_82598_BX
:
299 /* Default device ID is mezzanine card KX/KX4 */
300 media_type
= ixgbe_media_type_backplane
;
302 case IXGBE_DEV_ID_82598AF_DUAL_PORT
:
303 case IXGBE_DEV_ID_82598AF_SINGLE_PORT
:
304 case IXGBE_DEV_ID_82598_DA_DUAL_PORT
:
305 case IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM
:
306 case IXGBE_DEV_ID_82598EB_XF_LR
:
307 case IXGBE_DEV_ID_82598EB_SFP_LOM
:
308 media_type
= ixgbe_media_type_fiber
;
310 case IXGBE_DEV_ID_82598EB_CX4
:
311 case IXGBE_DEV_ID_82598_CX4_DUAL_PORT
:
312 media_type
= ixgbe_media_type_cx4
;
314 case IXGBE_DEV_ID_82598AT
:
315 case IXGBE_DEV_ID_82598AT2
:
316 media_type
= ixgbe_media_type_copper
;
319 media_type
= ixgbe_media_type_unknown
;
327 * ixgbe_fc_enable_82598 - Enable flow control
328 * @hw: pointer to hardware structure
329 * @packetbuf_num: packet buffer number (0-7)
331 * Enable flow control according to the current settings.
333 static s32
ixgbe_fc_enable_82598(struct ixgbe_hw
*hw
, s32 packetbuf_num
)
344 if (hw
->fc
.requested_mode
== ixgbe_fc_pfc
)
347 #endif /* CONFIG_DCB */
349 * On 82598 having Rx FC on causes resets while doing 1G
350 * so if it's on turn it off once we know link_speed. For
351 * more details see 82598 Specification update.
353 hw
->mac
.ops
.check_link(hw
, &link_speed
, &link_up
, false);
354 if (link_up
&& link_speed
== IXGBE_LINK_SPEED_1GB_FULL
) {
355 switch (hw
->fc
.requested_mode
) {
357 hw
->fc
.requested_mode
= ixgbe_fc_tx_pause
;
359 case ixgbe_fc_rx_pause
:
360 hw
->fc
.requested_mode
= ixgbe_fc_none
;
368 /* Negotiate the fc mode to use */
369 ret_val
= ixgbe_fc_autoneg(hw
);
370 if (ret_val
== IXGBE_ERR_FLOW_CONTROL
)
373 /* Disable any previous flow control settings */
374 fctrl_reg
= IXGBE_READ_REG(hw
, IXGBE_FCTRL
);
375 fctrl_reg
&= ~(IXGBE_FCTRL_RFCE
| IXGBE_FCTRL_RPFCE
);
377 rmcs_reg
= IXGBE_READ_REG(hw
, IXGBE_RMCS
);
378 rmcs_reg
&= ~(IXGBE_RMCS_TFCE_PRIORITY
| IXGBE_RMCS_TFCE_802_3X
);
381 * The possible values of fc.current_mode are:
382 * 0: Flow control is completely disabled
383 * 1: Rx flow control is enabled (we can receive pause frames,
384 * but not send pause frames).
385 * 2: Tx flow control is enabled (we can send pause frames but
386 * we do not support receiving pause frames).
387 * 3: Both Rx and Tx flow control (symmetric) are enabled.
389 * 4: Priority Flow Control is enabled.
393 switch (hw
->fc
.current_mode
) {
396 * Flow control is disabled by software override or autoneg.
397 * The code below will actually disable it in the HW.
400 case ixgbe_fc_rx_pause
:
402 * Rx Flow control is enabled and Tx Flow control is
403 * disabled by software override. Since there really
404 * isn't a way to advertise that we are capable of RX
405 * Pause ONLY, we will advertise that we support both
406 * symmetric and asymmetric Rx PAUSE. Later, we will
407 * disable the adapter's ability to send PAUSE frames.
409 fctrl_reg
|= IXGBE_FCTRL_RFCE
;
411 case ixgbe_fc_tx_pause
:
413 * Tx Flow control is enabled, and Rx Flow control is
414 * disabled by software override.
416 rmcs_reg
|= IXGBE_RMCS_TFCE_802_3X
;
419 /* Flow control (both Rx and Tx) is enabled by SW override. */
420 fctrl_reg
|= IXGBE_FCTRL_RFCE
;
421 rmcs_reg
|= IXGBE_RMCS_TFCE_802_3X
;
427 #endif /* CONFIG_DCB */
429 hw_dbg(hw
, "Flow control param set incorrectly\n");
430 ret_val
= IXGBE_ERR_CONFIG
;
435 /* Set 802.3x based flow control settings. */
436 fctrl_reg
|= IXGBE_FCTRL_DPF
;
437 IXGBE_WRITE_REG(hw
, IXGBE_FCTRL
, fctrl_reg
);
438 IXGBE_WRITE_REG(hw
, IXGBE_RMCS
, rmcs_reg
);
440 /* Set up and enable Rx high/low water mark thresholds, enable XON. */
441 if (hw
->fc
.current_mode
& ixgbe_fc_tx_pause
) {
442 rx_pba_size
= IXGBE_READ_REG(hw
, IXGBE_RXPBSIZE(packetbuf_num
));
443 rx_pba_size
>>= IXGBE_RXPBSIZE_SHIFT
;
445 reg
= (rx_pba_size
- hw
->fc
.low_water
) << 6;
447 reg
|= IXGBE_FCRTL_XONE
;
449 IXGBE_WRITE_REG(hw
, IXGBE_FCRTL(packetbuf_num
), reg
);
451 reg
= (rx_pba_size
- hw
->fc
.high_water
) << 6;
452 reg
|= IXGBE_FCRTH_FCEN
;
454 IXGBE_WRITE_REG(hw
, IXGBE_FCRTH(packetbuf_num
), reg
);
457 /* Configure pause time (2 TCs per register) */
458 reg
= IXGBE_READ_REG(hw
, IXGBE_FCTTV(packetbuf_num
/ 2));
459 if ((packetbuf_num
& 1) == 0)
460 reg
= (reg
& 0xFFFF0000) | hw
->fc
.pause_time
;
462 reg
= (reg
& 0x0000FFFF) | (hw
->fc
.pause_time
<< 16);
463 IXGBE_WRITE_REG(hw
, IXGBE_FCTTV(packetbuf_num
/ 2), reg
);
465 IXGBE_WRITE_REG(hw
, IXGBE_FCRTV
, (hw
->fc
.pause_time
>> 1));
472 * ixgbe_start_mac_link_82598 - Configures MAC link settings
473 * @hw: pointer to hardware structure
475 * Configures link settings based on values in the ixgbe_hw struct.
476 * Restarts the link. Performs autonegotiation if needed.
478 static s32
ixgbe_start_mac_link_82598(struct ixgbe_hw
*hw
,
479 bool autoneg_wait_to_complete
)
487 autoc_reg
= IXGBE_READ_REG(hw
, IXGBE_AUTOC
);
488 autoc_reg
|= IXGBE_AUTOC_AN_RESTART
;
489 IXGBE_WRITE_REG(hw
, IXGBE_AUTOC
, autoc_reg
);
491 /* Only poll for autoneg to complete if specified to do so */
492 if (autoneg_wait_to_complete
) {
493 if ((autoc_reg
& IXGBE_AUTOC_LMS_MASK
) ==
494 IXGBE_AUTOC_LMS_KX4_AN
||
495 (autoc_reg
& IXGBE_AUTOC_LMS_MASK
) ==
496 IXGBE_AUTOC_LMS_KX4_AN_1G_AN
) {
497 links_reg
= 0; /* Just in case Autoneg time = 0 */
498 for (i
= 0; i
< IXGBE_AUTO_NEG_TIME
; i
++) {
499 links_reg
= IXGBE_READ_REG(hw
, IXGBE_LINKS
);
500 if (links_reg
& IXGBE_LINKS_KX_AN_COMP
)
504 if (!(links_reg
& IXGBE_LINKS_KX_AN_COMP
)) {
505 status
= IXGBE_ERR_AUTONEG_NOT_COMPLETE
;
506 hw_dbg(hw
, "Autonegotiation did not complete.\n");
511 /* Add delay to filter out noises during initial link setup */
518 * ixgbe_validate_link_ready - Function looks for phy link
519 * @hw: pointer to hardware structure
521 * Function indicates success when phy link is available. If phy is not ready
522 * within 5 seconds of MAC indicating link, the function returns error.
524 static s32
ixgbe_validate_link_ready(struct ixgbe_hw
*hw
)
529 if (hw
->device_id
!= IXGBE_DEV_ID_82598AT2
)
533 timeout
< IXGBE_VALIDATE_LINK_READY_TIMEOUT
; timeout
++) {
534 hw
->phy
.ops
.read_reg(hw
, MDIO_STAT1
, MDIO_MMD_AN
, &an_reg
);
536 if ((an_reg
& MDIO_AN_STAT1_COMPLETE
) &&
537 (an_reg
& MDIO_STAT1_LSTATUS
))
543 if (timeout
== IXGBE_VALIDATE_LINK_READY_TIMEOUT
) {
544 hw_dbg(hw
, "Link was indicated but link is down\n");
545 return IXGBE_ERR_LINK_SETUP
;
552 * ixgbe_check_mac_link_82598 - Get link/speed status
553 * @hw: pointer to hardware structure
554 * @speed: pointer to link speed
555 * @link_up: true is link is up, false otherwise
556 * @link_up_wait_to_complete: bool used to wait for link up or not
558 * Reads the links register to determine if link is up and the current speed
560 static s32
ixgbe_check_mac_link_82598(struct ixgbe_hw
*hw
,
561 ixgbe_link_speed
*speed
, bool *link_up
,
562 bool link_up_wait_to_complete
)
566 u16 link_reg
, adapt_comp_reg
;
569 * SERDES PHY requires us to read link status from register 0xC79F.
570 * Bit 0 set indicates link is up/ready; clear indicates link down.
571 * 0xC00C is read to check that the XAUI lanes are active. Bit 0
572 * clear indicates active; set indicates inactive.
574 if (hw
->phy
.type
== ixgbe_phy_nl
) {
575 hw
->phy
.ops
.read_reg(hw
, 0xC79F, MDIO_MMD_PMAPMD
, &link_reg
);
576 hw
->phy
.ops
.read_reg(hw
, 0xC79F, MDIO_MMD_PMAPMD
, &link_reg
);
577 hw
->phy
.ops
.read_reg(hw
, 0xC00C, MDIO_MMD_PMAPMD
,
579 if (link_up_wait_to_complete
) {
580 for (i
= 0; i
< IXGBE_LINK_UP_TIME
; i
++) {
581 if ((link_reg
& 1) &&
582 ((adapt_comp_reg
& 1) == 0)) {
589 hw
->phy
.ops
.read_reg(hw
, 0xC79F,
592 hw
->phy
.ops
.read_reg(hw
, 0xC00C,
597 if ((link_reg
& 1) && ((adapt_comp_reg
& 1) == 0))
603 if (*link_up
== false)
607 links_reg
= IXGBE_READ_REG(hw
, IXGBE_LINKS
);
608 if (link_up_wait_to_complete
) {
609 for (i
= 0; i
< IXGBE_LINK_UP_TIME
; i
++) {
610 if (links_reg
& IXGBE_LINKS_UP
) {
617 links_reg
= IXGBE_READ_REG(hw
, IXGBE_LINKS
);
620 if (links_reg
& IXGBE_LINKS_UP
)
626 if (links_reg
& IXGBE_LINKS_SPEED
)
627 *speed
= IXGBE_LINK_SPEED_10GB_FULL
;
629 *speed
= IXGBE_LINK_SPEED_1GB_FULL
;
631 if ((hw
->device_id
== IXGBE_DEV_ID_82598AT2
) && (*link_up
== true) &&
632 (ixgbe_validate_link_ready(hw
) != 0))
635 /* if link is down, zero out the current_mode */
636 if (*link_up
== false) {
637 hw
->fc
.current_mode
= ixgbe_fc_none
;
638 hw
->fc
.fc_was_autonegged
= false;
645 * ixgbe_setup_mac_link_82598 - Set MAC link speed
646 * @hw: pointer to hardware structure
647 * @speed: new link speed
648 * @autoneg: true if auto-negotiation enabled
649 * @autoneg_wait_to_complete: true when waiting for completion is needed
651 * Set the link speed in the AUTOC register and restarts link.
653 static s32
ixgbe_setup_mac_link_82598(struct ixgbe_hw
*hw
,
654 ixgbe_link_speed speed
, bool autoneg
,
655 bool autoneg_wait_to_complete
)
658 ixgbe_link_speed link_capabilities
= IXGBE_LINK_SPEED_UNKNOWN
;
659 u32 curr_autoc
= IXGBE_READ_REG(hw
, IXGBE_AUTOC
);
660 u32 autoc
= curr_autoc
;
661 u32 link_mode
= autoc
& IXGBE_AUTOC_LMS_MASK
;
663 /* Check to see if speed passed in is supported. */
664 ixgbe_get_link_capabilities_82598(hw
, &link_capabilities
, &autoneg
);
665 speed
&= link_capabilities
;
667 if (speed
== IXGBE_LINK_SPEED_UNKNOWN
)
668 status
= IXGBE_ERR_LINK_SETUP
;
670 /* Set KX4/KX support according to speed requested */
671 else if (link_mode
== IXGBE_AUTOC_LMS_KX4_AN
||
672 link_mode
== IXGBE_AUTOC_LMS_KX4_AN_1G_AN
) {
673 autoc
&= ~IXGBE_AUTOC_KX4_KX_SUPP_MASK
;
674 if (speed
& IXGBE_LINK_SPEED_10GB_FULL
)
675 autoc
|= IXGBE_AUTOC_KX4_SUPP
;
676 if (speed
& IXGBE_LINK_SPEED_1GB_FULL
)
677 autoc
|= IXGBE_AUTOC_KX_SUPP
;
678 if (autoc
!= curr_autoc
)
679 IXGBE_WRITE_REG(hw
, IXGBE_AUTOC
, autoc
);
684 * Setup and restart the link based on the new values in
685 * ixgbe_hw This will write the AUTOC register based on the new
688 status
= ixgbe_start_mac_link_82598(hw
,
689 autoneg_wait_to_complete
);
697 * ixgbe_setup_copper_link_82598 - Set the PHY autoneg advertised field
698 * @hw: pointer to hardware structure
699 * @speed: new link speed
700 * @autoneg: true if autonegotiation enabled
701 * @autoneg_wait_to_complete: true if waiting is needed to complete
703 * Sets the link speed in the AUTOC register in the MAC and restarts link.
705 static s32
ixgbe_setup_copper_link_82598(struct ixgbe_hw
*hw
,
706 ixgbe_link_speed speed
,
708 bool autoneg_wait_to_complete
)
712 /* Setup the PHY according to input speed */
713 status
= hw
->phy
.ops
.setup_link_speed(hw
, speed
, autoneg
,
714 autoneg_wait_to_complete
);
716 ixgbe_start_mac_link_82598(hw
, autoneg_wait_to_complete
);
722 * ixgbe_reset_hw_82598 - Performs hardware reset
723 * @hw: pointer to hardware structure
725 * Resets the hardware by resetting the transmit and receive units, masks and
726 * clears all interrupts, performing a PHY reset, and performing a link (MAC)
729 static s32
ixgbe_reset_hw_82598(struct ixgbe_hw
*hw
)
739 /* Call adapter stop to disable tx/rx and clear interrupts */
740 hw
->mac
.ops
.stop_adapter(hw
);
743 * Power up the Atlas Tx lanes if they are currently powered down.
744 * Atlas Tx lanes are powered down for MAC loopback tests, but
745 * they are not automatically restored on reset.
747 hw
->mac
.ops
.read_analog_reg8(hw
, IXGBE_ATLAS_PDN_LPBK
, &analog_val
);
748 if (analog_val
& IXGBE_ATLAS_PDN_TX_REG_EN
) {
749 /* Enable Tx Atlas so packets can be transmitted again */
750 hw
->mac
.ops
.read_analog_reg8(hw
, IXGBE_ATLAS_PDN_LPBK
,
752 analog_val
&= ~IXGBE_ATLAS_PDN_TX_REG_EN
;
753 hw
->mac
.ops
.write_analog_reg8(hw
, IXGBE_ATLAS_PDN_LPBK
,
756 hw
->mac
.ops
.read_analog_reg8(hw
, IXGBE_ATLAS_PDN_10G
,
758 analog_val
&= ~IXGBE_ATLAS_PDN_TX_10G_QL_ALL
;
759 hw
->mac
.ops
.write_analog_reg8(hw
, IXGBE_ATLAS_PDN_10G
,
762 hw
->mac
.ops
.read_analog_reg8(hw
, IXGBE_ATLAS_PDN_1G
,
764 analog_val
&= ~IXGBE_ATLAS_PDN_TX_1G_QL_ALL
;
765 hw
->mac
.ops
.write_analog_reg8(hw
, IXGBE_ATLAS_PDN_1G
,
768 hw
->mac
.ops
.read_analog_reg8(hw
, IXGBE_ATLAS_PDN_AN
,
770 analog_val
&= ~IXGBE_ATLAS_PDN_TX_AN_QL_ALL
;
771 hw
->mac
.ops
.write_analog_reg8(hw
, IXGBE_ATLAS_PDN_AN
,
776 if (hw
->phy
.reset_disable
== false) {
777 /* PHY ops must be identified and initialized prior to reset */
779 /* Init PHY and function pointers, perform SFP setup */
780 phy_status
= hw
->phy
.ops
.init(hw
);
781 if (phy_status
== IXGBE_ERR_SFP_NOT_SUPPORTED
)
783 else if (phy_status
== IXGBE_ERR_SFP_NOT_PRESENT
)
786 hw
->phy
.ops
.reset(hw
);
791 * Prevent the PCI-E bus from from hanging by disabling PCI-E master
792 * access and verify no pending requests before reset
794 ixgbe_disable_pcie_master(hw
);
798 * Issue global reset to the MAC. This needs to be a SW reset.
799 * If link reset is used, it might reset the MAC when mng is using it
801 ctrl
= IXGBE_READ_REG(hw
, IXGBE_CTRL
);
802 IXGBE_WRITE_REG(hw
, IXGBE_CTRL
, (ctrl
| IXGBE_CTRL_RST
));
803 IXGBE_WRITE_FLUSH(hw
);
805 /* Poll for reset bit to self-clear indicating reset is complete */
806 for (i
= 0; i
< 10; i
++) {
808 ctrl
= IXGBE_READ_REG(hw
, IXGBE_CTRL
);
809 if (!(ctrl
& IXGBE_CTRL_RST
))
812 if (ctrl
& IXGBE_CTRL_RST
) {
813 status
= IXGBE_ERR_RESET_FAILED
;
814 hw_dbg(hw
, "Reset polling failed to complete.\n");
818 * Double resets are required for recovery from certain error
819 * conditions. Between resets, it is necessary to stall to allow time
820 * for any pending HW events to complete. We use 1usec since that is
821 * what is needed for ixgbe_disable_pcie_master(). The second reset
822 * then clears out any effects of those events.
824 if (hw
->mac
.flags
& IXGBE_FLAGS_DOUBLE_RESET_REQUIRED
) {
825 hw
->mac
.flags
&= ~IXGBE_FLAGS_DOUBLE_RESET_REQUIRED
;
832 gheccr
= IXGBE_READ_REG(hw
, IXGBE_GHECCR
);
833 gheccr
&= ~((1 << 21) | (1 << 18) | (1 << 9) | (1 << 6));
834 IXGBE_WRITE_REG(hw
, IXGBE_GHECCR
, gheccr
);
837 * Store the original AUTOC value if it has not been
838 * stored off yet. Otherwise restore the stored original
839 * AUTOC value since the reset operation sets back to deaults.
841 autoc
= IXGBE_READ_REG(hw
, IXGBE_AUTOC
);
842 if (hw
->mac
.orig_link_settings_stored
== false) {
843 hw
->mac
.orig_autoc
= autoc
;
844 hw
->mac
.orig_link_settings_stored
= true;
845 } else if (autoc
!= hw
->mac
.orig_autoc
) {
846 IXGBE_WRITE_REG(hw
, IXGBE_AUTOC
, hw
->mac
.orig_autoc
);
849 /* Store the permanent mac address */
850 hw
->mac
.ops
.get_mac_addr(hw
, hw
->mac
.perm_addr
);
853 * Store MAC address from RAR0, clear receive address registers, and
854 * clear the multicast table
856 hw
->mac
.ops
.init_rx_addrs(hw
);
866 * ixgbe_set_vmdq_82598 - Associate a VMDq set index with a rx address
867 * @hw: pointer to hardware struct
868 * @rar: receive address register index to associate with a VMDq index
869 * @vmdq: VMDq set index
871 static s32
ixgbe_set_vmdq_82598(struct ixgbe_hw
*hw
, u32 rar
, u32 vmdq
)
874 u32 rar_entries
= hw
->mac
.num_rar_entries
;
876 /* Make sure we are using a valid rar index range */
877 if (rar
>= rar_entries
) {
878 hw_dbg(hw
, "RAR index %d is out of range.\n", rar
);
879 return IXGBE_ERR_INVALID_ARGUMENT
;
882 rar_high
= IXGBE_READ_REG(hw
, IXGBE_RAH(rar
));
883 rar_high
&= ~IXGBE_RAH_VIND_MASK
;
884 rar_high
|= ((vmdq
<< IXGBE_RAH_VIND_SHIFT
) & IXGBE_RAH_VIND_MASK
);
885 IXGBE_WRITE_REG(hw
, IXGBE_RAH(rar
), rar_high
);
890 * ixgbe_clear_vmdq_82598 - Disassociate a VMDq set index from an rx address
891 * @hw: pointer to hardware struct
892 * @rar: receive address register index to associate with a VMDq index
893 * @vmdq: VMDq clear index (not used in 82598, but elsewhere)
895 static s32
ixgbe_clear_vmdq_82598(struct ixgbe_hw
*hw
, u32 rar
, u32 vmdq
)
898 u32 rar_entries
= hw
->mac
.num_rar_entries
;
901 /* Make sure we are using a valid rar index range */
902 if (rar
>= rar_entries
) {
903 hw_dbg(hw
, "RAR index %d is out of range.\n", rar
);
904 return IXGBE_ERR_INVALID_ARGUMENT
;
907 rar_high
= IXGBE_READ_REG(hw
, IXGBE_RAH(rar
));
908 if (rar_high
& IXGBE_RAH_VIND_MASK
) {
909 rar_high
&= ~IXGBE_RAH_VIND_MASK
;
910 IXGBE_WRITE_REG(hw
, IXGBE_RAH(rar
), rar_high
);
917 * ixgbe_set_vfta_82598 - Set VLAN filter table
918 * @hw: pointer to hardware structure
919 * @vlan: VLAN id to write to VLAN filter
920 * @vind: VMDq output index that maps queue to VLAN id in VFTA
921 * @vlan_on: boolean flag to turn on/off VLAN in VFTA
923 * Turn on/off specified VLAN in the VLAN filter table.
925 static s32
ixgbe_set_vfta_82598(struct ixgbe_hw
*hw
, u32 vlan
, u32 vind
,
934 return IXGBE_ERR_PARAM
;
936 /* Determine 32-bit word position in array */
937 regindex
= (vlan
>> 5) & 0x7F; /* upper seven bits */
939 /* Determine the location of the (VMD) queue index */
940 vftabyte
= ((vlan
>> 3) & 0x03); /* bits (4:3) indicating byte array */
941 bitindex
= (vlan
& 0x7) << 2; /* lower 3 bits indicate nibble */
943 /* Set the nibble for VMD queue index */
944 bits
= IXGBE_READ_REG(hw
, IXGBE_VFTAVIND(vftabyte
, regindex
));
945 bits
&= (~(0x0F << bitindex
));
946 bits
|= (vind
<< bitindex
);
947 IXGBE_WRITE_REG(hw
, IXGBE_VFTAVIND(vftabyte
, regindex
), bits
);
949 /* Determine the location of the bit for this VLAN id */
950 bitindex
= vlan
& 0x1F; /* lower five bits */
952 bits
= IXGBE_READ_REG(hw
, IXGBE_VFTA(regindex
));
954 /* Turn on this VLAN id */
955 bits
|= (1 << bitindex
);
957 /* Turn off this VLAN id */
958 bits
&= ~(1 << bitindex
);
959 IXGBE_WRITE_REG(hw
, IXGBE_VFTA(regindex
), bits
);
965 * ixgbe_clear_vfta_82598 - Clear VLAN filter table
966 * @hw: pointer to hardware structure
968 * Clears the VLAN filer table, and the VMDq index associated with the filter
970 static s32
ixgbe_clear_vfta_82598(struct ixgbe_hw
*hw
)
975 for (offset
= 0; offset
< hw
->mac
.vft_size
; offset
++)
976 IXGBE_WRITE_REG(hw
, IXGBE_VFTA(offset
), 0);
978 for (vlanbyte
= 0; vlanbyte
< 4; vlanbyte
++)
979 for (offset
= 0; offset
< hw
->mac
.vft_size
; offset
++)
980 IXGBE_WRITE_REG(hw
, IXGBE_VFTAVIND(vlanbyte
, offset
),
987 * ixgbe_read_analog_reg8_82598 - Reads 8 bit Atlas analog register
988 * @hw: pointer to hardware structure
989 * @reg: analog register to read
992 * Performs read operation to Atlas analog register specified.
994 static s32
ixgbe_read_analog_reg8_82598(struct ixgbe_hw
*hw
, u32 reg
, u8
*val
)
998 IXGBE_WRITE_REG(hw
, IXGBE_ATLASCTL
,
999 IXGBE_ATLASCTL_WRITE_CMD
| (reg
<< 8));
1000 IXGBE_WRITE_FLUSH(hw
);
1002 atlas_ctl
= IXGBE_READ_REG(hw
, IXGBE_ATLASCTL
);
1003 *val
= (u8
)atlas_ctl
;
1009 * ixgbe_write_analog_reg8_82598 - Writes 8 bit Atlas analog register
1010 * @hw: pointer to hardware structure
1011 * @reg: atlas register to write
1012 * @val: value to write
1014 * Performs write operation to Atlas analog register specified.
1016 static s32
ixgbe_write_analog_reg8_82598(struct ixgbe_hw
*hw
, u32 reg
, u8 val
)
1020 atlas_ctl
= (reg
<< 8) | val
;
1021 IXGBE_WRITE_REG(hw
, IXGBE_ATLASCTL
, atlas_ctl
);
1022 IXGBE_WRITE_FLUSH(hw
);
1029 * ixgbe_read_i2c_eeprom_82598 - Reads 8 bit word over I2C interface.
1030 * @hw: pointer to hardware structure
1031 * @byte_offset: EEPROM byte offset to read
1032 * @eeprom_data: value read
1034 * Performs 8 byte read operation to SFP module's EEPROM over I2C interface.
1036 static s32
ixgbe_read_i2c_eeprom_82598(struct ixgbe_hw
*hw
, u8 byte_offset
,
1045 if (hw
->phy
.type
== ixgbe_phy_nl
) {
1047 * phy SDA/SCL registers are at addresses 0xC30A to
1048 * 0xC30D. These registers are used to talk to the SFP+
1049 * module's EEPROM through the SDA/SCL (I2C) interface.
1051 sfp_addr
= (IXGBE_I2C_EEPROM_DEV_ADDR
<< 8) + byte_offset
;
1052 sfp_addr
= (sfp_addr
| IXGBE_I2C_EEPROM_READ_MASK
);
1053 hw
->phy
.ops
.write_reg(hw
,
1054 IXGBE_MDIO_PMA_PMD_SDA_SCL_ADDR
,
1059 for (i
= 0; i
< 100; i
++) {
1060 hw
->phy
.ops
.read_reg(hw
,
1061 IXGBE_MDIO_PMA_PMD_SDA_SCL_STAT
,
1064 sfp_stat
= sfp_stat
& IXGBE_I2C_EEPROM_STATUS_MASK
;
1065 if (sfp_stat
!= IXGBE_I2C_EEPROM_STATUS_IN_PROGRESS
)
1070 if (sfp_stat
!= IXGBE_I2C_EEPROM_STATUS_PASS
) {
1071 hw_dbg(hw
, "EEPROM read did not pass.\n");
1072 status
= IXGBE_ERR_SFP_NOT_PRESENT
;
1077 hw
->phy
.ops
.read_reg(hw
, IXGBE_MDIO_PMA_PMD_SDA_SCL_DATA
,
1078 MDIO_MMD_PMAPMD
, &sfp_data
);
1080 *eeprom_data
= (u8
)(sfp_data
>> 8);
1082 status
= IXGBE_ERR_PHY
;
1091 * ixgbe_get_supported_physical_layer_82598 - Returns physical layer type
1092 * @hw: pointer to hardware structure
1094 * Determines physical layer capabilities of the current configuration.
1096 static u32
ixgbe_get_supported_physical_layer_82598(struct ixgbe_hw
*hw
)
1098 u32 physical_layer
= IXGBE_PHYSICAL_LAYER_UNKNOWN
;
1099 u32 autoc
= IXGBE_READ_REG(hw
, IXGBE_AUTOC
);
1100 u32 pma_pmd_10g
= autoc
& IXGBE_AUTOC_10G_PMA_PMD_MASK
;
1101 u32 pma_pmd_1g
= autoc
& IXGBE_AUTOC_1G_PMA_PMD_MASK
;
1102 u16 ext_ability
= 0;
1104 hw
->phy
.ops
.identify(hw
);
1106 /* Copper PHY must be checked before AUTOC LMS to determine correct
1107 * physical layer because 10GBase-T PHYs use LMS = KX4/KX */
1108 switch (hw
->phy
.type
) {
1111 case ixgbe_phy_cu_unknown
:
1112 hw
->phy
.ops
.read_reg(hw
, MDIO_PMA_EXTABLE
,
1113 MDIO_MMD_PMAPMD
, &ext_ability
);
1114 if (ext_ability
& MDIO_PMA_EXTABLE_10GBT
)
1115 physical_layer
|= IXGBE_PHYSICAL_LAYER_10GBASE_T
;
1116 if (ext_ability
& MDIO_PMA_EXTABLE_1000BT
)
1117 physical_layer
|= IXGBE_PHYSICAL_LAYER_1000BASE_T
;
1118 if (ext_ability
& MDIO_PMA_EXTABLE_100BTX
)
1119 physical_layer
|= IXGBE_PHYSICAL_LAYER_100BASE_TX
;
1125 switch (autoc
& IXGBE_AUTOC_LMS_MASK
) {
1126 case IXGBE_AUTOC_LMS_1G_AN
:
1127 case IXGBE_AUTOC_LMS_1G_LINK_NO_AN
:
1128 if (pma_pmd_1g
== IXGBE_AUTOC_1G_KX
)
1129 physical_layer
= IXGBE_PHYSICAL_LAYER_1000BASE_KX
;
1131 physical_layer
= IXGBE_PHYSICAL_LAYER_1000BASE_BX
;
1133 case IXGBE_AUTOC_LMS_10G_LINK_NO_AN
:
1134 if (pma_pmd_10g
== IXGBE_AUTOC_10G_CX4
)
1135 physical_layer
= IXGBE_PHYSICAL_LAYER_10GBASE_CX4
;
1136 else if (pma_pmd_10g
== IXGBE_AUTOC_10G_KX4
)
1137 physical_layer
= IXGBE_PHYSICAL_LAYER_10GBASE_KX4
;
1139 physical_layer
= IXGBE_PHYSICAL_LAYER_UNKNOWN
;
1141 case IXGBE_AUTOC_LMS_KX4_AN
:
1142 case IXGBE_AUTOC_LMS_KX4_AN_1G_AN
:
1143 if (autoc
& IXGBE_AUTOC_KX_SUPP
)
1144 physical_layer
|= IXGBE_PHYSICAL_LAYER_1000BASE_KX
;
1145 if (autoc
& IXGBE_AUTOC_KX4_SUPP
)
1146 physical_layer
|= IXGBE_PHYSICAL_LAYER_10GBASE_KX4
;
1152 if (hw
->phy
.type
== ixgbe_phy_nl
) {
1153 hw
->phy
.ops
.identify_sfp(hw
);
1155 switch (hw
->phy
.sfp_type
) {
1156 case ixgbe_sfp_type_da_cu
:
1157 physical_layer
= IXGBE_PHYSICAL_LAYER_SFP_PLUS_CU
;
1159 case ixgbe_sfp_type_sr
:
1160 physical_layer
= IXGBE_PHYSICAL_LAYER_10GBASE_SR
;
1162 case ixgbe_sfp_type_lr
:
1163 physical_layer
= IXGBE_PHYSICAL_LAYER_10GBASE_LR
;
1166 physical_layer
= IXGBE_PHYSICAL_LAYER_UNKNOWN
;
1171 switch (hw
->device_id
) {
1172 case IXGBE_DEV_ID_82598_DA_DUAL_PORT
:
1173 physical_layer
= IXGBE_PHYSICAL_LAYER_SFP_PLUS_CU
;
1175 case IXGBE_DEV_ID_82598AF_DUAL_PORT
:
1176 case IXGBE_DEV_ID_82598AF_SINGLE_PORT
:
1177 case IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM
:
1178 physical_layer
= IXGBE_PHYSICAL_LAYER_10GBASE_SR
;
1180 case IXGBE_DEV_ID_82598EB_XF_LR
:
1181 physical_layer
= IXGBE_PHYSICAL_LAYER_10GBASE_LR
;
1188 return physical_layer
;
1191 static struct ixgbe_mac_operations mac_ops_82598
= {
1192 .init_hw
= &ixgbe_init_hw_generic
,
1193 .reset_hw
= &ixgbe_reset_hw_82598
,
1194 .start_hw
= &ixgbe_start_hw_82598
,
1195 .clear_hw_cntrs
= &ixgbe_clear_hw_cntrs_generic
,
1196 .get_media_type
= &ixgbe_get_media_type_82598
,
1197 .get_supported_physical_layer
= &ixgbe_get_supported_physical_layer_82598
,
1198 .enable_rx_dma
= &ixgbe_enable_rx_dma_generic
,
1199 .get_mac_addr
= &ixgbe_get_mac_addr_generic
,
1200 .stop_adapter
= &ixgbe_stop_adapter_generic
,
1201 .get_bus_info
= &ixgbe_get_bus_info_generic
,
1202 .set_lan_id
= &ixgbe_set_lan_id_multi_port_pcie
,
1203 .read_analog_reg8
= &ixgbe_read_analog_reg8_82598
,
1204 .write_analog_reg8
= &ixgbe_write_analog_reg8_82598
,
1205 .setup_link
= &ixgbe_setup_mac_link_82598
,
1206 .check_link
= &ixgbe_check_mac_link_82598
,
1207 .get_link_capabilities
= &ixgbe_get_link_capabilities_82598
,
1208 .led_on
= &ixgbe_led_on_generic
,
1209 .led_off
= &ixgbe_led_off_generic
,
1210 .blink_led_start
= &ixgbe_blink_led_start_generic
,
1211 .blink_led_stop
= &ixgbe_blink_led_stop_generic
,
1212 .set_rar
= &ixgbe_set_rar_generic
,
1213 .clear_rar
= &ixgbe_clear_rar_generic
,
1214 .set_vmdq
= &ixgbe_set_vmdq_82598
,
1215 .clear_vmdq
= &ixgbe_clear_vmdq_82598
,
1216 .init_rx_addrs
= &ixgbe_init_rx_addrs_generic
,
1217 .update_mc_addr_list
= &ixgbe_update_mc_addr_list_generic
,
1218 .enable_mc
= &ixgbe_enable_mc_generic
,
1219 .disable_mc
= &ixgbe_disable_mc_generic
,
1220 .clear_vfta
= &ixgbe_clear_vfta_82598
,
1221 .set_vfta
= &ixgbe_set_vfta_82598
,
1222 .fc_enable
= &ixgbe_fc_enable_82598
,
1223 .acquire_swfw_sync
= &ixgbe_acquire_swfw_sync
,
1224 .release_swfw_sync
= &ixgbe_release_swfw_sync
,
1227 static struct ixgbe_eeprom_operations eeprom_ops_82598
= {
1228 .init_params
= &ixgbe_init_eeprom_params_generic
,
1229 .read
= &ixgbe_read_eerd_generic
,
1230 .calc_checksum
= &ixgbe_calc_eeprom_checksum_generic
,
1231 .validate_checksum
= &ixgbe_validate_eeprom_checksum_generic
,
1232 .update_checksum
= &ixgbe_update_eeprom_checksum_generic
,
1235 static struct ixgbe_phy_operations phy_ops_82598
= {
1236 .identify
= &ixgbe_identify_phy_generic
,
1237 .identify_sfp
= &ixgbe_identify_sfp_module_generic
,
1238 .init
= &ixgbe_init_phy_ops_82598
,
1239 .reset
= &ixgbe_reset_phy_generic
,
1240 .read_reg
= &ixgbe_read_phy_reg_generic
,
1241 .write_reg
= &ixgbe_write_phy_reg_generic
,
1242 .setup_link
= &ixgbe_setup_phy_link_generic
,
1243 .setup_link_speed
= &ixgbe_setup_phy_link_speed_generic
,
1244 .read_i2c_eeprom
= &ixgbe_read_i2c_eeprom_82598
,
1245 .check_overtemp
= &ixgbe_tn_check_overtemp
,
1248 struct ixgbe_info ixgbe_82598_info
= {
1249 .mac
= ixgbe_mac_82598EB
,
1250 .get_invariants
= &ixgbe_get_invariants_82598
,
1251 .mac_ops
= &mac_ops_82598
,
1252 .eeprom_ops
= &eeprom_ops_82598
,
1253 .phy_ops
= &phy_ops_82598
,