1 /*******************************************************************************
3 Intel 10 Gigabit PCI Express Linux driver
4 Copyright(c) 1999 - 2010 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_get_copper_link_capabilities_82598(struct ixgbe_hw
*hw
,
42 ixgbe_link_speed
*speed
,
44 static s32
ixgbe_setup_copper_link_82598(struct ixgbe_hw
*hw
,
45 ixgbe_link_speed speed
,
47 bool autoneg_wait_to_complete
);
48 static s32
ixgbe_read_i2c_eeprom_82598(struct ixgbe_hw
*hw
, u8 byte_offset
,
52 * ixgbe_set_pcie_completion_timeout - set pci-e completion timeout
53 * @hw: pointer to the HW structure
55 * The defaults for 82598 should be in the range of 50us to 50ms,
56 * however the hardware default for these parts is 500us to 1ms which is less
57 * than the 10ms recommended by the pci-e spec. To address this we need to
58 * increase the value to either 10ms to 250ms for capability version 1 config,
59 * or 16ms to 55ms for version 2.
61 static void ixgbe_set_pcie_completion_timeout(struct ixgbe_hw
*hw
)
63 struct ixgbe_adapter
*adapter
= hw
->back
;
64 u32 gcr
= IXGBE_READ_REG(hw
, IXGBE_GCR
);
67 /* only take action if timeout value is defaulted to 0 */
68 if (gcr
& IXGBE_GCR_CMPL_TMOUT_MASK
)
72 * if capababilities version is type 1 we can write the
73 * timeout of 10ms to 250ms through the GCR register
75 if (!(gcr
& IXGBE_GCR_CAP_VER2
)) {
76 gcr
|= IXGBE_GCR_CMPL_TMOUT_10ms
;
81 * for version 2 capabilities we need to write the config space
82 * directly in order to set the completion timeout value for
85 pci_read_config_word(adapter
->pdev
,
86 IXGBE_PCI_DEVICE_CONTROL2
, &pcie_devctl2
);
87 pcie_devctl2
|= IXGBE_PCI_DEVICE_CONTROL2_16ms
;
88 pci_write_config_word(adapter
->pdev
,
89 IXGBE_PCI_DEVICE_CONTROL2
, pcie_devctl2
);
91 /* disable completion timeout resend */
92 gcr
&= ~IXGBE_GCR_CMPL_TMOUT_RESEND
;
93 IXGBE_WRITE_REG(hw
, IXGBE_GCR
, gcr
);
97 * ixgbe_get_pcie_msix_count_82598 - Gets MSI-X vector count
98 * @hw: pointer to hardware structure
100 * Read PCIe configuration space, and get the MSI-X vector count from
101 * the capabilities table.
103 static u16
ixgbe_get_pcie_msix_count_82598(struct ixgbe_hw
*hw
)
105 struct ixgbe_adapter
*adapter
= hw
->back
;
107 pci_read_config_word(adapter
->pdev
, IXGBE_PCIE_MSIX_82598_CAPS
,
109 msix_count
&= IXGBE_PCIE_MSIX_TBL_SZ_MASK
;
111 /* MSI-X count is zero-based in HW, so increment to give proper value */
119 static s32
ixgbe_get_invariants_82598(struct ixgbe_hw
*hw
)
121 struct ixgbe_mac_info
*mac
= &hw
->mac
;
123 /* Call PHY identify routine to get the phy type */
124 ixgbe_identify_phy_generic(hw
);
126 mac
->mcft_size
= IXGBE_82598_MC_TBL_SIZE
;
127 mac
->vft_size
= IXGBE_82598_VFT_TBL_SIZE
;
128 mac
->num_rar_entries
= IXGBE_82598_RAR_ENTRIES
;
129 mac
->max_rx_queues
= IXGBE_82598_MAX_RX_QUEUES
;
130 mac
->max_tx_queues
= IXGBE_82598_MAX_TX_QUEUES
;
131 mac
->max_msix_vectors
= ixgbe_get_pcie_msix_count_82598(hw
);
137 * ixgbe_init_phy_ops_82598 - PHY/SFP specific init
138 * @hw: pointer to hardware structure
140 * Initialize any function pointers that were not able to be
141 * set during get_invariants because the PHY/SFP type was
142 * not known. Perform the SFP init if necessary.
145 static s32
ixgbe_init_phy_ops_82598(struct ixgbe_hw
*hw
)
147 struct ixgbe_mac_info
*mac
= &hw
->mac
;
148 struct ixgbe_phy_info
*phy
= &hw
->phy
;
150 u16 list_offset
, data_offset
;
152 /* Identify the PHY */
153 phy
->ops
.identify(hw
);
155 /* Overwrite the link function pointers if copper PHY */
156 if (mac
->ops
.get_media_type(hw
) == ixgbe_media_type_copper
) {
157 mac
->ops
.setup_link
= &ixgbe_setup_copper_link_82598
;
158 mac
->ops
.get_link_capabilities
=
159 &ixgbe_get_copper_link_capabilities_82598
;
162 switch (hw
->phy
.type
) {
164 phy
->ops
.check_link
= &ixgbe_check_phy_link_tnx
;
165 phy
->ops
.get_firmware_version
=
166 &ixgbe_get_phy_firmware_version_tnx
;
169 phy
->ops
.reset
= &ixgbe_reset_phy_nl
;
171 /* Call SFP+ identify routine to get the SFP+ module type */
172 ret_val
= phy
->ops
.identify_sfp(hw
);
175 else if (hw
->phy
.sfp_type
== ixgbe_sfp_type_unknown
) {
176 ret_val
= IXGBE_ERR_SFP_NOT_SUPPORTED
;
180 /* Check to see if SFP+ module is supported */
181 ret_val
= ixgbe_get_sfp_init_sequence_offsets(hw
,
185 ret_val
= IXGBE_ERR_SFP_NOT_SUPPORTED
;
198 * ixgbe_start_hw_82598 - Prepare hardware for Tx/Rx
199 * @hw: pointer to hardware structure
201 * Starts the hardware using the generic start_hw function.
202 * Then set pcie completion timeout
204 static s32
ixgbe_start_hw_82598(struct ixgbe_hw
*hw
)
208 ret_val
= ixgbe_start_hw_generic(hw
);
210 /* set the completion timeout for interface */
212 ixgbe_set_pcie_completion_timeout(hw
);
218 * ixgbe_get_link_capabilities_82598 - Determines link capabilities
219 * @hw: pointer to hardware structure
220 * @speed: pointer to link speed
221 * @autoneg: boolean auto-negotiation value
223 * Determines the link capabilities by reading the AUTOC register.
225 static s32
ixgbe_get_link_capabilities_82598(struct ixgbe_hw
*hw
,
226 ixgbe_link_speed
*speed
,
233 * Determine link capabilities based on the stored value of AUTOC,
234 * which represents EEPROM defaults. If AUTOC value has not been
235 * stored, use the current register value.
237 if (hw
->mac
.orig_link_settings_stored
)
238 autoc
= hw
->mac
.orig_autoc
;
240 autoc
= IXGBE_READ_REG(hw
, IXGBE_AUTOC
);
242 switch (autoc
& IXGBE_AUTOC_LMS_MASK
) {
243 case IXGBE_AUTOC_LMS_1G_LINK_NO_AN
:
244 *speed
= IXGBE_LINK_SPEED_1GB_FULL
;
248 case IXGBE_AUTOC_LMS_10G_LINK_NO_AN
:
249 *speed
= IXGBE_LINK_SPEED_10GB_FULL
;
253 case IXGBE_AUTOC_LMS_1G_AN
:
254 *speed
= IXGBE_LINK_SPEED_1GB_FULL
;
258 case IXGBE_AUTOC_LMS_KX4_AN
:
259 case IXGBE_AUTOC_LMS_KX4_AN_1G_AN
:
260 *speed
= IXGBE_LINK_SPEED_UNKNOWN
;
261 if (autoc
& IXGBE_AUTOC_KX4_SUPP
)
262 *speed
|= IXGBE_LINK_SPEED_10GB_FULL
;
263 if (autoc
& IXGBE_AUTOC_KX_SUPP
)
264 *speed
|= IXGBE_LINK_SPEED_1GB_FULL
;
269 status
= IXGBE_ERR_LINK_SETUP
;
277 * ixgbe_get_copper_link_capabilities_82598 - Determines link capabilities
278 * @hw: pointer to hardware structure
279 * @speed: pointer to link speed
280 * @autoneg: boolean auto-negotiation value
282 * Determines the link capabilities by reading the AUTOC register.
284 static s32
ixgbe_get_copper_link_capabilities_82598(struct ixgbe_hw
*hw
,
285 ixgbe_link_speed
*speed
,
288 s32 status
= IXGBE_ERR_LINK_SETUP
;
294 status
= hw
->phy
.ops
.read_reg(hw
, MDIO_SPEED
, MDIO_MMD_PMAPMD
,
298 if (speed_ability
& MDIO_SPEED_10G
)
299 *speed
|= IXGBE_LINK_SPEED_10GB_FULL
;
300 if (speed_ability
& MDIO_PMA_SPEED_1000
)
301 *speed
|= IXGBE_LINK_SPEED_1GB_FULL
;
308 * ixgbe_get_media_type_82598 - Determines media type
309 * @hw: pointer to hardware structure
311 * Returns the media type (fiber, copper, backplane)
313 static enum ixgbe_media_type
ixgbe_get_media_type_82598(struct ixgbe_hw
*hw
)
315 enum ixgbe_media_type media_type
;
317 /* Media type for I82598 is based on device ID */
318 switch (hw
->device_id
) {
319 case IXGBE_DEV_ID_82598
:
320 case IXGBE_DEV_ID_82598_BX
:
321 media_type
= ixgbe_media_type_backplane
;
323 case IXGBE_DEV_ID_82598AF_DUAL_PORT
:
324 case IXGBE_DEV_ID_82598AF_SINGLE_PORT
:
325 case IXGBE_DEV_ID_82598_DA_DUAL_PORT
:
326 case IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM
:
327 case IXGBE_DEV_ID_82598EB_XF_LR
:
328 case IXGBE_DEV_ID_82598EB_SFP_LOM
:
329 media_type
= ixgbe_media_type_fiber
;
331 case IXGBE_DEV_ID_82598EB_CX4
:
332 case IXGBE_DEV_ID_82598_CX4_DUAL_PORT
:
333 media_type
= ixgbe_media_type_cx4
;
335 case IXGBE_DEV_ID_82598AT
:
336 case IXGBE_DEV_ID_82598AT2
:
337 media_type
= ixgbe_media_type_copper
;
340 media_type
= ixgbe_media_type_unknown
;
348 * ixgbe_fc_enable_82598 - Enable flow control
349 * @hw: pointer to hardware structure
350 * @packetbuf_num: packet buffer number (0-7)
352 * Enable flow control according to the current settings.
354 static s32
ixgbe_fc_enable_82598(struct ixgbe_hw
*hw
, s32 packetbuf_num
)
364 if (hw
->fc
.requested_mode
== ixgbe_fc_pfc
)
367 #endif /* CONFIG_DCB */
369 * On 82598 having Rx FC on causes resets while doing 1G
370 * so if it's on turn it off once we know link_speed. For
371 * more details see 82598 Specification update.
373 hw
->mac
.ops
.check_link(hw
, &link_speed
, &link_up
, false);
374 if (link_up
&& link_speed
== IXGBE_LINK_SPEED_1GB_FULL
) {
375 switch (hw
->fc
.requested_mode
) {
377 hw
->fc
.requested_mode
= ixgbe_fc_tx_pause
;
379 case ixgbe_fc_rx_pause
:
380 hw
->fc
.requested_mode
= ixgbe_fc_none
;
388 /* Negotiate the fc mode to use */
389 ret_val
= ixgbe_fc_autoneg(hw
);
393 /* Disable any previous flow control settings */
394 fctrl_reg
= IXGBE_READ_REG(hw
, IXGBE_FCTRL
);
395 fctrl_reg
&= ~(IXGBE_FCTRL_RFCE
| IXGBE_FCTRL_RPFCE
);
397 rmcs_reg
= IXGBE_READ_REG(hw
, IXGBE_RMCS
);
398 rmcs_reg
&= ~(IXGBE_RMCS_TFCE_PRIORITY
| IXGBE_RMCS_TFCE_802_3X
);
401 * The possible values of fc.current_mode are:
402 * 0: Flow control is completely disabled
403 * 1: Rx flow control is enabled (we can receive pause frames,
404 * but not send pause frames).
405 * 2: Tx flow control is enabled (we can send pause frames but
406 * we do not support receiving pause frames).
407 * 3: Both Rx and Tx flow control (symmetric) are enabled.
410 * 4: Priority Flow Control is enabled.
413 switch (hw
->fc
.current_mode
) {
416 * Flow control is disabled by software override or autoneg.
417 * The code below will actually disable it in the HW.
420 case ixgbe_fc_rx_pause
:
422 * Rx Flow control is enabled and Tx Flow control is
423 * disabled by software override. Since there really
424 * isn't a way to advertise that we are capable of RX
425 * Pause ONLY, we will advertise that we support both
426 * symmetric and asymmetric Rx PAUSE. Later, we will
427 * disable the adapter's ability to send PAUSE frames.
429 fctrl_reg
|= IXGBE_FCTRL_RFCE
;
431 case ixgbe_fc_tx_pause
:
433 * Tx Flow control is enabled, and Rx Flow control is
434 * disabled by software override.
436 rmcs_reg
|= IXGBE_RMCS_TFCE_802_3X
;
439 /* Flow control (both Rx and Tx) is enabled by SW override. */
440 fctrl_reg
|= IXGBE_FCTRL_RFCE
;
441 rmcs_reg
|= IXGBE_RMCS_TFCE_802_3X
;
447 #endif /* CONFIG_DCB */
449 hw_dbg(hw
, "Flow control param set incorrectly\n");
450 ret_val
= IXGBE_ERR_CONFIG
;
455 /* Set 802.3x based flow control settings. */
456 fctrl_reg
|= IXGBE_FCTRL_DPF
;
457 IXGBE_WRITE_REG(hw
, IXGBE_FCTRL
, fctrl_reg
);
458 IXGBE_WRITE_REG(hw
, IXGBE_RMCS
, rmcs_reg
);
460 /* Set up and enable Rx high/low water mark thresholds, enable XON. */
461 if (hw
->fc
.current_mode
& ixgbe_fc_tx_pause
) {
462 if (hw
->fc
.send_xon
) {
463 IXGBE_WRITE_REG(hw
, IXGBE_FCRTL(packetbuf_num
),
464 (hw
->fc
.low_water
| IXGBE_FCRTL_XONE
));
466 IXGBE_WRITE_REG(hw
, IXGBE_FCRTL(packetbuf_num
),
470 IXGBE_WRITE_REG(hw
, IXGBE_FCRTH(packetbuf_num
),
471 (hw
->fc
.high_water
| IXGBE_FCRTH_FCEN
));
474 /* Configure pause time (2 TCs per register) */
475 reg
= IXGBE_READ_REG(hw
, IXGBE_FCTTV(packetbuf_num
/ 2));
476 if ((packetbuf_num
& 1) == 0)
477 reg
= (reg
& 0xFFFF0000) | hw
->fc
.pause_time
;
479 reg
= (reg
& 0x0000FFFF) | (hw
->fc
.pause_time
<< 16);
480 IXGBE_WRITE_REG(hw
, IXGBE_FCTTV(packetbuf_num
/ 2), reg
);
482 IXGBE_WRITE_REG(hw
, IXGBE_FCRTV
, (hw
->fc
.pause_time
>> 1));
489 * ixgbe_start_mac_link_82598 - Configures MAC link settings
490 * @hw: pointer to hardware structure
492 * Configures link settings based on values in the ixgbe_hw struct.
493 * Restarts the link. Performs autonegotiation if needed.
495 static s32
ixgbe_start_mac_link_82598(struct ixgbe_hw
*hw
,
496 bool autoneg_wait_to_complete
)
504 autoc_reg
= IXGBE_READ_REG(hw
, IXGBE_AUTOC
);
505 autoc_reg
|= IXGBE_AUTOC_AN_RESTART
;
506 IXGBE_WRITE_REG(hw
, IXGBE_AUTOC
, autoc_reg
);
508 /* Only poll for autoneg to complete if specified to do so */
509 if (autoneg_wait_to_complete
) {
510 if ((autoc_reg
& IXGBE_AUTOC_LMS_MASK
) ==
511 IXGBE_AUTOC_LMS_KX4_AN
||
512 (autoc_reg
& IXGBE_AUTOC_LMS_MASK
) ==
513 IXGBE_AUTOC_LMS_KX4_AN_1G_AN
) {
514 links_reg
= 0; /* Just in case Autoneg time = 0 */
515 for (i
= 0; i
< IXGBE_AUTO_NEG_TIME
; i
++) {
516 links_reg
= IXGBE_READ_REG(hw
, IXGBE_LINKS
);
517 if (links_reg
& IXGBE_LINKS_KX_AN_COMP
)
521 if (!(links_reg
& IXGBE_LINKS_KX_AN_COMP
)) {
522 status
= IXGBE_ERR_AUTONEG_NOT_COMPLETE
;
523 hw_dbg(hw
, "Autonegotiation did not complete.\n");
528 /* Add delay to filter out noises during initial link setup */
535 * ixgbe_validate_link_ready - Function looks for phy link
536 * @hw: pointer to hardware structure
538 * Function indicates success when phy link is available. If phy is not ready
539 * within 5 seconds of MAC indicating link, the function returns error.
541 static s32
ixgbe_validate_link_ready(struct ixgbe_hw
*hw
)
546 if (hw
->device_id
!= IXGBE_DEV_ID_82598AT2
)
550 timeout
< IXGBE_VALIDATE_LINK_READY_TIMEOUT
; timeout
++) {
551 hw
->phy
.ops
.read_reg(hw
, MDIO_STAT1
, MDIO_MMD_AN
, &an_reg
);
553 if ((an_reg
& MDIO_AN_STAT1_COMPLETE
) &&
554 (an_reg
& MDIO_STAT1_LSTATUS
))
560 if (timeout
== IXGBE_VALIDATE_LINK_READY_TIMEOUT
) {
561 hw_dbg(hw
, "Link was indicated but link is down\n");
562 return IXGBE_ERR_LINK_SETUP
;
569 * ixgbe_check_mac_link_82598 - Get link/speed status
570 * @hw: pointer to hardware structure
571 * @speed: pointer to link speed
572 * @link_up: true is link is up, false otherwise
573 * @link_up_wait_to_complete: bool used to wait for link up or not
575 * Reads the links register to determine if link is up and the current speed
577 static s32
ixgbe_check_mac_link_82598(struct ixgbe_hw
*hw
,
578 ixgbe_link_speed
*speed
, bool *link_up
,
579 bool link_up_wait_to_complete
)
583 u16 link_reg
, adapt_comp_reg
;
586 * SERDES PHY requires us to read link status from register 0xC79F.
587 * Bit 0 set indicates link is up/ready; clear indicates link down.
588 * 0xC00C is read to check that the XAUI lanes are active. Bit 0
589 * clear indicates active; set indicates inactive.
591 if (hw
->phy
.type
== ixgbe_phy_nl
) {
592 hw
->phy
.ops
.read_reg(hw
, 0xC79F, MDIO_MMD_PMAPMD
, &link_reg
);
593 hw
->phy
.ops
.read_reg(hw
, 0xC79F, MDIO_MMD_PMAPMD
, &link_reg
);
594 hw
->phy
.ops
.read_reg(hw
, 0xC00C, MDIO_MMD_PMAPMD
,
596 if (link_up_wait_to_complete
) {
597 for (i
= 0; i
< IXGBE_LINK_UP_TIME
; i
++) {
598 if ((link_reg
& 1) &&
599 ((adapt_comp_reg
& 1) == 0)) {
606 hw
->phy
.ops
.read_reg(hw
, 0xC79F,
609 hw
->phy
.ops
.read_reg(hw
, 0xC00C,
614 if ((link_reg
& 1) && ((adapt_comp_reg
& 1) == 0))
620 if (*link_up
== false)
624 links_reg
= IXGBE_READ_REG(hw
, IXGBE_LINKS
);
625 if (link_up_wait_to_complete
) {
626 for (i
= 0; i
< IXGBE_LINK_UP_TIME
; i
++) {
627 if (links_reg
& IXGBE_LINKS_UP
) {
634 links_reg
= IXGBE_READ_REG(hw
, IXGBE_LINKS
);
637 if (links_reg
& IXGBE_LINKS_UP
)
643 if (links_reg
& IXGBE_LINKS_SPEED
)
644 *speed
= IXGBE_LINK_SPEED_10GB_FULL
;
646 *speed
= IXGBE_LINK_SPEED_1GB_FULL
;
648 if ((hw
->device_id
== IXGBE_DEV_ID_82598AT2
) && (*link_up
== true) &&
649 (ixgbe_validate_link_ready(hw
) != 0))
652 /* if link is down, zero out the current_mode */
653 if (*link_up
== false) {
654 hw
->fc
.current_mode
= ixgbe_fc_none
;
655 hw
->fc
.fc_was_autonegged
= false;
663 * ixgbe_setup_mac_link_82598 - Set MAC link speed
664 * @hw: pointer to hardware structure
665 * @speed: new link speed
666 * @autoneg: true if auto-negotiation enabled
667 * @autoneg_wait_to_complete: true if waiting is needed to complete
669 * Set the link speed in the AUTOC register and restarts link.
671 static s32
ixgbe_setup_mac_link_82598(struct ixgbe_hw
*hw
,
672 ixgbe_link_speed speed
, bool autoneg
,
673 bool autoneg_wait_to_complete
)
676 ixgbe_link_speed link_capabilities
= IXGBE_LINK_SPEED_UNKNOWN
;
677 u32 curr_autoc
= IXGBE_READ_REG(hw
, IXGBE_AUTOC
);
678 u32 autoc
= curr_autoc
;
679 u32 link_mode
= autoc
& IXGBE_AUTOC_LMS_MASK
;
681 /* Check to see if speed passed in is supported. */
682 ixgbe_get_link_capabilities_82598(hw
, &link_capabilities
, &autoneg
);
683 speed
&= link_capabilities
;
685 if (speed
== IXGBE_LINK_SPEED_UNKNOWN
)
686 status
= IXGBE_ERR_LINK_SETUP
;
688 /* Set KX4/KX support according to speed requested */
689 else if (link_mode
== IXGBE_AUTOC_LMS_KX4_AN
||
690 link_mode
== IXGBE_AUTOC_LMS_KX4_AN_1G_AN
) {
691 autoc
&= ~IXGBE_AUTOC_KX4_KX_SUPP_MASK
;
692 if (speed
& IXGBE_LINK_SPEED_10GB_FULL
)
693 autoc
|= IXGBE_AUTOC_KX4_SUPP
;
694 if (speed
& IXGBE_LINK_SPEED_1GB_FULL
)
695 autoc
|= IXGBE_AUTOC_KX_SUPP
;
696 if (autoc
!= curr_autoc
)
697 IXGBE_WRITE_REG(hw
, IXGBE_AUTOC
, autoc
);
702 * Setup and restart the link based on the new values in
703 * ixgbe_hw This will write the AUTOC register based on the new
706 status
= ixgbe_start_mac_link_82598(hw
, autoneg_wait_to_complete
);
714 * ixgbe_setup_copper_link_82598 - Set the PHY autoneg advertised field
715 * @hw: pointer to hardware structure
716 * @speed: new link speed
717 * @autoneg: true if autonegotiation enabled
718 * @autoneg_wait_to_complete: true if waiting is needed to complete
720 * Sets the link speed in the AUTOC register in the MAC and restarts link.
722 static s32
ixgbe_setup_copper_link_82598(struct ixgbe_hw
*hw
,
723 ixgbe_link_speed speed
,
725 bool autoneg_wait_to_complete
)
729 /* Setup the PHY according to input speed */
730 status
= hw
->phy
.ops
.setup_link_speed(hw
, speed
, autoneg
,
731 autoneg_wait_to_complete
);
734 ixgbe_start_mac_link_82598(hw
, autoneg_wait_to_complete
);
740 * ixgbe_reset_hw_82598 - Performs hardware reset
741 * @hw: pointer to hardware structure
743 * Resets the hardware by resetting the transmit and receive units, masks and
744 * clears all interrupts, performing a PHY reset, and performing a link (MAC)
747 static s32
ixgbe_reset_hw_82598(struct ixgbe_hw
*hw
)
757 /* Call adapter stop to disable tx/rx and clear interrupts */
758 hw
->mac
.ops
.stop_adapter(hw
);
761 * Power up the Atlas Tx lanes if they are currently powered down.
762 * Atlas Tx lanes are powered down for MAC loopback tests, but
763 * they are not automatically restored on reset.
765 hw
->mac
.ops
.read_analog_reg8(hw
, IXGBE_ATLAS_PDN_LPBK
, &analog_val
);
766 if (analog_val
& IXGBE_ATLAS_PDN_TX_REG_EN
) {
767 /* Enable Tx Atlas so packets can be transmitted again */
768 hw
->mac
.ops
.read_analog_reg8(hw
, IXGBE_ATLAS_PDN_LPBK
,
770 analog_val
&= ~IXGBE_ATLAS_PDN_TX_REG_EN
;
771 hw
->mac
.ops
.write_analog_reg8(hw
, IXGBE_ATLAS_PDN_LPBK
,
774 hw
->mac
.ops
.read_analog_reg8(hw
, IXGBE_ATLAS_PDN_10G
,
776 analog_val
&= ~IXGBE_ATLAS_PDN_TX_10G_QL_ALL
;
777 hw
->mac
.ops
.write_analog_reg8(hw
, IXGBE_ATLAS_PDN_10G
,
780 hw
->mac
.ops
.read_analog_reg8(hw
, IXGBE_ATLAS_PDN_1G
,
782 analog_val
&= ~IXGBE_ATLAS_PDN_TX_1G_QL_ALL
;
783 hw
->mac
.ops
.write_analog_reg8(hw
, IXGBE_ATLAS_PDN_1G
,
786 hw
->mac
.ops
.read_analog_reg8(hw
, IXGBE_ATLAS_PDN_AN
,
788 analog_val
&= ~IXGBE_ATLAS_PDN_TX_AN_QL_ALL
;
789 hw
->mac
.ops
.write_analog_reg8(hw
, IXGBE_ATLAS_PDN_AN
,
794 if (hw
->phy
.reset_disable
== false) {
795 /* PHY ops must be identified and initialized prior to reset */
797 /* Init PHY and function pointers, perform SFP setup */
798 phy_status
= hw
->phy
.ops
.init(hw
);
799 if (phy_status
== IXGBE_ERR_SFP_NOT_SUPPORTED
)
801 else if (phy_status
== IXGBE_ERR_SFP_NOT_PRESENT
)
805 hw
->phy
.ops
.reset(hw
);
810 * Prevent the PCI-E bus from from hanging by disabling PCI-E master
811 * access and verify no pending requests before reset
813 status
= ixgbe_disable_pcie_master(hw
);
815 status
= IXGBE_ERR_MASTER_REQUESTS_PENDING
;
816 hw_dbg(hw
, "PCI-E Master disable polling has failed.\n");
820 * Issue global reset to the MAC. This needs to be a SW reset.
821 * If link reset is used, it might reset the MAC when mng is using it
823 ctrl
= IXGBE_READ_REG(hw
, IXGBE_CTRL
);
824 IXGBE_WRITE_REG(hw
, IXGBE_CTRL
, (ctrl
| IXGBE_CTRL_RST
));
825 IXGBE_WRITE_FLUSH(hw
);
827 /* Poll for reset bit to self-clear indicating reset is complete */
828 for (i
= 0; i
< 10; i
++) {
830 ctrl
= IXGBE_READ_REG(hw
, IXGBE_CTRL
);
831 if (!(ctrl
& IXGBE_CTRL_RST
))
834 if (ctrl
& IXGBE_CTRL_RST
) {
835 status
= IXGBE_ERR_RESET_FAILED
;
836 hw_dbg(hw
, "Reset polling failed to complete.\n");
841 gheccr
= IXGBE_READ_REG(hw
, IXGBE_GHECCR
);
842 gheccr
&= ~((1 << 21) | (1 << 18) | (1 << 9) | (1 << 6));
843 IXGBE_WRITE_REG(hw
, IXGBE_GHECCR
, gheccr
);
846 * Store the original AUTOC value if it has not been
847 * stored off yet. Otherwise restore the stored original
848 * AUTOC value since the reset operation sets back to deaults.
850 autoc
= IXGBE_READ_REG(hw
, IXGBE_AUTOC
);
851 if (hw
->mac
.orig_link_settings_stored
== false) {
852 hw
->mac
.orig_autoc
= autoc
;
853 hw
->mac
.orig_link_settings_stored
= true;
854 } else if (autoc
!= hw
->mac
.orig_autoc
) {
855 IXGBE_WRITE_REG(hw
, IXGBE_AUTOC
, hw
->mac
.orig_autoc
);
859 * Store MAC address from RAR0, clear receive address registers, and
860 * clear the multicast table
862 hw
->mac
.ops
.init_rx_addrs(hw
);
864 /* Store the permanent mac address */
865 hw
->mac
.ops
.get_mac_addr(hw
, hw
->mac
.perm_addr
);
875 * ixgbe_set_vmdq_82598 - Associate a VMDq set index with a rx address
876 * @hw: pointer to hardware struct
877 * @rar: receive address register index to associate with a VMDq index
878 * @vmdq: VMDq set index
880 static s32
ixgbe_set_vmdq_82598(struct ixgbe_hw
*hw
, u32 rar
, u32 vmdq
)
884 rar_high
= IXGBE_READ_REG(hw
, IXGBE_RAH(rar
));
885 rar_high
&= ~IXGBE_RAH_VIND_MASK
;
886 rar_high
|= ((vmdq
<< IXGBE_RAH_VIND_SHIFT
) & IXGBE_RAH_VIND_MASK
);
887 IXGBE_WRITE_REG(hw
, IXGBE_RAH(rar
), rar_high
);
892 * ixgbe_clear_vmdq_82598 - Disassociate a VMDq set index from an rx address
893 * @hw: pointer to hardware struct
894 * @rar: receive address register index to associate with a VMDq index
895 * @vmdq: VMDq clear index (not used in 82598, but elsewhere)
897 static s32
ixgbe_clear_vmdq_82598(struct ixgbe_hw
*hw
, u32 rar
, u32 vmdq
)
900 u32 rar_entries
= hw
->mac
.num_rar_entries
;
902 if (rar
< rar_entries
) {
903 rar_high
= IXGBE_READ_REG(hw
, IXGBE_RAH(rar
));
904 if (rar_high
& IXGBE_RAH_VIND_MASK
) {
905 rar_high
&= ~IXGBE_RAH_VIND_MASK
;
906 IXGBE_WRITE_REG(hw
, IXGBE_RAH(rar
), rar_high
);
909 hw_dbg(hw
, "RAR index %d is out of range.\n", rar
);
916 * ixgbe_set_vfta_82598 - Set VLAN filter table
917 * @hw: pointer to hardware structure
918 * @vlan: VLAN id to write to VLAN filter
919 * @vind: VMDq output index that maps queue to VLAN id in VFTA
920 * @vlan_on: boolean flag to turn on/off VLAN in VFTA
922 * Turn on/off specified VLAN in the VLAN filter table.
924 static s32
ixgbe_set_vfta_82598(struct ixgbe_hw
*hw
, u32 vlan
, u32 vind
,
933 return IXGBE_ERR_PARAM
;
935 /* Determine 32-bit word position in array */
936 regindex
= (vlan
>> 5) & 0x7F; /* upper seven bits */
938 /* Determine the location of the (VMD) queue index */
939 vftabyte
= ((vlan
>> 3) & 0x03); /* bits (4:3) indicating byte array */
940 bitindex
= (vlan
& 0x7) << 2; /* lower 3 bits indicate nibble */
942 /* Set the nibble for VMD queue index */
943 bits
= IXGBE_READ_REG(hw
, IXGBE_VFTAVIND(vftabyte
, regindex
));
944 bits
&= (~(0x0F << bitindex
));
945 bits
|= (vind
<< bitindex
);
946 IXGBE_WRITE_REG(hw
, IXGBE_VFTAVIND(vftabyte
, regindex
), bits
);
948 /* Determine the location of the bit for this VLAN id */
949 bitindex
= vlan
& 0x1F; /* lower five bits */
951 bits
= IXGBE_READ_REG(hw
, IXGBE_VFTA(regindex
));
953 /* Turn on this VLAN id */
954 bits
|= (1 << bitindex
);
956 /* Turn off this VLAN id */
957 bits
&= ~(1 << bitindex
);
958 IXGBE_WRITE_REG(hw
, IXGBE_VFTA(regindex
), bits
);
964 * ixgbe_clear_vfta_82598 - Clear VLAN filter table
965 * @hw: pointer to hardware structure
967 * Clears the VLAN filer table, and the VMDq index associated with the filter
969 static s32
ixgbe_clear_vfta_82598(struct ixgbe_hw
*hw
)
974 for (offset
= 0; offset
< hw
->mac
.vft_size
; offset
++)
975 IXGBE_WRITE_REG(hw
, IXGBE_VFTA(offset
), 0);
977 for (vlanbyte
= 0; vlanbyte
< 4; vlanbyte
++)
978 for (offset
= 0; offset
< hw
->mac
.vft_size
; offset
++)
979 IXGBE_WRITE_REG(hw
, IXGBE_VFTAVIND(vlanbyte
, offset
),
986 * ixgbe_read_analog_reg8_82598 - Reads 8 bit Atlas analog register
987 * @hw: pointer to hardware structure
988 * @reg: analog register to read
991 * Performs read operation to Atlas analog register specified.
993 static s32
ixgbe_read_analog_reg8_82598(struct ixgbe_hw
*hw
, u32 reg
, u8
*val
)
997 IXGBE_WRITE_REG(hw
, IXGBE_ATLASCTL
,
998 IXGBE_ATLASCTL_WRITE_CMD
| (reg
<< 8));
999 IXGBE_WRITE_FLUSH(hw
);
1001 atlas_ctl
= IXGBE_READ_REG(hw
, IXGBE_ATLASCTL
);
1002 *val
= (u8
)atlas_ctl
;
1008 * ixgbe_write_analog_reg8_82598 - Writes 8 bit Atlas analog register
1009 * @hw: pointer to hardware structure
1010 * @reg: atlas register to write
1011 * @val: value to write
1013 * Performs write operation to Atlas analog register specified.
1015 static s32
ixgbe_write_analog_reg8_82598(struct ixgbe_hw
*hw
, u32 reg
, u8 val
)
1019 atlas_ctl
= (reg
<< 8) | val
;
1020 IXGBE_WRITE_REG(hw
, IXGBE_ATLASCTL
, atlas_ctl
);
1021 IXGBE_WRITE_FLUSH(hw
);
1028 * ixgbe_read_i2c_eeprom_82598 - Read 8 bit EEPROM word of an SFP+ module
1029 * over I2C interface through an intermediate phy.
1030 * @hw: pointer to hardware structure
1031 * @byte_offset: EEPROM byte offset to read
1032 * @eeprom_data: value read
1034 * Performs 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 if (hw
->phy
.type
== ixgbe_phy_tn
||
1109 hw
->phy
.type
== ixgbe_phy_cu_unknown
) {
1110 hw
->phy
.ops
.read_reg(hw
, MDIO_PMA_EXTABLE
, MDIO_MMD_PMAPMD
,
1112 if (ext_ability
& MDIO_PMA_EXTABLE_10GBT
)
1113 physical_layer
|= IXGBE_PHYSICAL_LAYER_10GBASE_T
;
1114 if (ext_ability
& MDIO_PMA_EXTABLE_1000BT
)
1115 physical_layer
|= IXGBE_PHYSICAL_LAYER_1000BASE_T
;
1116 if (ext_ability
& MDIO_PMA_EXTABLE_100BTX
)
1117 physical_layer
|= IXGBE_PHYSICAL_LAYER_100BASE_TX
;
1121 switch (autoc
& IXGBE_AUTOC_LMS_MASK
) {
1122 case IXGBE_AUTOC_LMS_1G_AN
:
1123 case IXGBE_AUTOC_LMS_1G_LINK_NO_AN
:
1124 if (pma_pmd_1g
== IXGBE_AUTOC_1G_KX
)
1125 physical_layer
= IXGBE_PHYSICAL_LAYER_1000BASE_KX
;
1127 physical_layer
= IXGBE_PHYSICAL_LAYER_1000BASE_BX
;
1129 case IXGBE_AUTOC_LMS_10G_LINK_NO_AN
:
1130 if (pma_pmd_10g
== IXGBE_AUTOC_10G_CX4
)
1131 physical_layer
= IXGBE_PHYSICAL_LAYER_10GBASE_CX4
;
1132 else if (pma_pmd_10g
== IXGBE_AUTOC_10G_KX4
)
1133 physical_layer
= IXGBE_PHYSICAL_LAYER_10GBASE_KX4
;
1135 physical_layer
= IXGBE_PHYSICAL_LAYER_UNKNOWN
;
1137 case IXGBE_AUTOC_LMS_KX4_AN
:
1138 case IXGBE_AUTOC_LMS_KX4_AN_1G_AN
:
1139 if (autoc
& IXGBE_AUTOC_KX_SUPP
)
1140 physical_layer
|= IXGBE_PHYSICAL_LAYER_1000BASE_KX
;
1141 if (autoc
& IXGBE_AUTOC_KX4_SUPP
)
1142 physical_layer
|= IXGBE_PHYSICAL_LAYER_10GBASE_KX4
;
1148 if (hw
->phy
.type
== ixgbe_phy_nl
) {
1149 hw
->phy
.ops
.identify_sfp(hw
);
1151 switch (hw
->phy
.sfp_type
) {
1152 case ixgbe_sfp_type_da_cu
:
1153 physical_layer
= IXGBE_PHYSICAL_LAYER_SFP_PLUS_CU
;
1155 case ixgbe_sfp_type_sr
:
1156 physical_layer
= IXGBE_PHYSICAL_LAYER_10GBASE_SR
;
1158 case ixgbe_sfp_type_lr
:
1159 physical_layer
= IXGBE_PHYSICAL_LAYER_10GBASE_LR
;
1162 physical_layer
= IXGBE_PHYSICAL_LAYER_UNKNOWN
;
1167 switch (hw
->device_id
) {
1168 case IXGBE_DEV_ID_82598_DA_DUAL_PORT
:
1169 physical_layer
= IXGBE_PHYSICAL_LAYER_SFP_PLUS_CU
;
1171 case IXGBE_DEV_ID_82598AF_DUAL_PORT
:
1172 case IXGBE_DEV_ID_82598AF_SINGLE_PORT
:
1173 case IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM
:
1174 physical_layer
= IXGBE_PHYSICAL_LAYER_10GBASE_SR
;
1176 case IXGBE_DEV_ID_82598EB_XF_LR
:
1177 physical_layer
= IXGBE_PHYSICAL_LAYER_10GBASE_LR
;
1184 return physical_layer
;
1187 static struct ixgbe_mac_operations mac_ops_82598
= {
1188 .init_hw
= &ixgbe_init_hw_generic
,
1189 .reset_hw
= &ixgbe_reset_hw_82598
,
1190 .start_hw
= &ixgbe_start_hw_82598
,
1191 .clear_hw_cntrs
= &ixgbe_clear_hw_cntrs_generic
,
1192 .get_media_type
= &ixgbe_get_media_type_82598
,
1193 .get_supported_physical_layer
= &ixgbe_get_supported_physical_layer_82598
,
1194 .enable_rx_dma
= &ixgbe_enable_rx_dma_generic
,
1195 .get_mac_addr
= &ixgbe_get_mac_addr_generic
,
1196 .stop_adapter
= &ixgbe_stop_adapter_generic
,
1197 .get_bus_info
= &ixgbe_get_bus_info_generic
,
1198 .set_lan_id
= &ixgbe_set_lan_id_multi_port_pcie
,
1199 .read_analog_reg8
= &ixgbe_read_analog_reg8_82598
,
1200 .write_analog_reg8
= &ixgbe_write_analog_reg8_82598
,
1201 .setup_link
= &ixgbe_setup_mac_link_82598
,
1202 .check_link
= &ixgbe_check_mac_link_82598
,
1203 .get_link_capabilities
= &ixgbe_get_link_capabilities_82598
,
1204 .led_on
= &ixgbe_led_on_generic
,
1205 .led_off
= &ixgbe_led_off_generic
,
1206 .blink_led_start
= &ixgbe_blink_led_start_generic
,
1207 .blink_led_stop
= &ixgbe_blink_led_stop_generic
,
1208 .set_rar
= &ixgbe_set_rar_generic
,
1209 .clear_rar
= &ixgbe_clear_rar_generic
,
1210 .set_vmdq
= &ixgbe_set_vmdq_82598
,
1211 .clear_vmdq
= &ixgbe_clear_vmdq_82598
,
1212 .init_rx_addrs
= &ixgbe_init_rx_addrs_generic
,
1213 .update_uc_addr_list
= &ixgbe_update_uc_addr_list_generic
,
1214 .update_mc_addr_list
= &ixgbe_update_mc_addr_list_generic
,
1215 .enable_mc
= &ixgbe_enable_mc_generic
,
1216 .disable_mc
= &ixgbe_disable_mc_generic
,
1217 .clear_vfta
= &ixgbe_clear_vfta_82598
,
1218 .set_vfta
= &ixgbe_set_vfta_82598
,
1219 .fc_enable
= &ixgbe_fc_enable_82598
,
1222 static struct ixgbe_eeprom_operations eeprom_ops_82598
= {
1223 .init_params
= &ixgbe_init_eeprom_params_generic
,
1224 .read
= &ixgbe_read_eerd_generic
,
1225 .validate_checksum
= &ixgbe_validate_eeprom_checksum_generic
,
1226 .update_checksum
= &ixgbe_update_eeprom_checksum_generic
,
1229 static struct ixgbe_phy_operations phy_ops_82598
= {
1230 .identify
= &ixgbe_identify_phy_generic
,
1231 .identify_sfp
= &ixgbe_identify_sfp_module_generic
,
1232 .init
= &ixgbe_init_phy_ops_82598
,
1233 .reset
= &ixgbe_reset_phy_generic
,
1234 .read_reg
= &ixgbe_read_phy_reg_generic
,
1235 .write_reg
= &ixgbe_write_phy_reg_generic
,
1236 .setup_link
= &ixgbe_setup_phy_link_generic
,
1237 .setup_link_speed
= &ixgbe_setup_phy_link_speed_generic
,
1238 .read_i2c_eeprom
= &ixgbe_read_i2c_eeprom_82598
,
1239 .check_overtemp
= &ixgbe_tn_check_overtemp
,
1242 struct ixgbe_info ixgbe_82598_info
= {
1243 .mac
= ixgbe_mac_82598EB
,
1244 .get_invariants
= &ixgbe_get_invariants_82598
,
1245 .mac_ops
= &mac_ops_82598
,
1246 .eeprom_ops
= &eeprom_ops_82598
,
1247 .phy_ops
= &phy_ops_82598
,