1 /*******************************************************************************
3 Intel 10 Gigabit PCI Express Linux driver
4 Copyright(c) 1999 - 2007 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 Linux NICS <linux.nics@intel.com>
24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *******************************************************************************/
29 #include <linux/pci.h>
30 #include <linux/delay.h>
31 #include <linux/sched.h>
34 #include "ixgbe_phy.h"
36 #define IXGBE_82598_MAX_TX_QUEUES 32
37 #define IXGBE_82598_MAX_RX_QUEUES 64
38 #define IXGBE_82598_RAR_ENTRIES 16
39 #define IXGBE_82598_MC_TBL_SIZE 128
40 #define IXGBE_82598_VFT_TBL_SIZE 128
42 static s32 ixgbe_get_invariants_82598(struct ixgbe_hw *hw);
43 static s32 ixgbe_get_link_settings_82598(struct ixgbe_hw *hw, u32 *speed,
45 static s32 ixgbe_get_copper_link_settings_82598(struct ixgbe_hw *hw,
46 u32 *speed, bool *autoneg);
47 static enum ixgbe_media_type ixgbe_get_media_type_82598(struct ixgbe_hw *hw);
48 static s32 ixgbe_setup_mac_link_82598(struct ixgbe_hw *hw);
49 static s32 ixgbe_check_mac_link_82598(struct ixgbe_hw *hw, u32 *speed,
51 bool link_up_wait_to_complete);
52 static s32 ixgbe_setup_mac_link_speed_82598(struct ixgbe_hw *hw, u32 speed,
54 bool autoneg_wait_to_complete);
55 static s32 ixgbe_setup_copper_link_82598(struct ixgbe_hw *hw);
56 static s32 ixgbe_setup_copper_link_speed_82598(struct ixgbe_hw *hw, u32 speed,
58 bool autoneg_wait_to_complete);
59 static s32 ixgbe_reset_hw_82598(struct ixgbe_hw *hw);
62 static s32 ixgbe_get_invariants_82598(struct ixgbe_hw *hw)
64 hw->mac.num_rx_queues = IXGBE_82598_MAX_RX_QUEUES;
65 hw->mac.num_tx_queues = IXGBE_82598_MAX_TX_QUEUES;
66 hw->mac.mcft_size = IXGBE_82598_MC_TBL_SIZE;
67 hw->mac.vft_size = IXGBE_82598_VFT_TBL_SIZE;
68 hw->mac.num_rar_entries = IXGBE_82598_RAR_ENTRIES;
70 /* PHY ops are filled in by default properly for Fiber only */
71 if (hw->mac.ops.get_media_type(hw) == ixgbe_media_type_copper) {
72 hw->mac.ops.setup_link = &ixgbe_setup_copper_link_82598;
73 hw->mac.ops.setup_link_speed = &ixgbe_setup_copper_link_speed_82598;
74 hw->mac.ops.get_link_settings =
75 &ixgbe_get_copper_link_settings_82598;
77 /* Call PHY identify routine to get the phy type */
78 ixgbe_identify_phy(hw);
80 switch (hw->phy.type) {
82 hw->phy.ops.setup_link = &ixgbe_setup_tnx_phy_link;
83 hw->phy.ops.check_link = &ixgbe_check_tnx_phy_link;
84 hw->phy.ops.setup_link_speed =
85 &ixgbe_setup_tnx_phy_link_speed;
96 * ixgbe_get_link_settings_82598 - Determines default link settings
97 * @hw: pointer to hardware structure
98 * @speed: pointer to link speed
99 * @autoneg: boolean auto-negotiation value
101 * Determines the default link settings by reading the AUTOC register.
103 static s32 ixgbe_get_link_settings_82598(struct ixgbe_hw *hw, u32 *speed,
109 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
111 if (hw->mac.link_settings_loaded) {
112 autoc_reg &= ~IXGBE_AUTOC_LMS_ATTACH_TYPE;
113 autoc_reg &= ~IXGBE_AUTOC_LMS_MASK;
114 autoc_reg |= hw->mac.link_attach_type;
115 autoc_reg |= hw->mac.link_mode_select;
118 switch (autoc_reg & IXGBE_AUTOC_LMS_MASK) {
119 case IXGBE_AUTOC_LMS_1G_LINK_NO_AN:
120 *speed = IXGBE_LINK_SPEED_1GB_FULL;
124 case IXGBE_AUTOC_LMS_10G_LINK_NO_AN:
125 *speed = IXGBE_LINK_SPEED_10GB_FULL;
129 case IXGBE_AUTOC_LMS_1G_AN:
130 *speed = IXGBE_LINK_SPEED_1GB_FULL;
134 case IXGBE_AUTOC_LMS_KX4_AN:
135 case IXGBE_AUTOC_LMS_KX4_AN_1G_AN:
136 *speed = IXGBE_LINK_SPEED_UNKNOWN;
137 if (autoc_reg & IXGBE_AUTOC_KX4_SUPP)
138 *speed |= IXGBE_LINK_SPEED_10GB_FULL;
139 if (autoc_reg & IXGBE_AUTOC_KX_SUPP)
140 *speed |= IXGBE_LINK_SPEED_1GB_FULL;
145 status = IXGBE_ERR_LINK_SETUP;
153 * ixgbe_get_copper_link_settings_82598 - Determines default link settings
154 * @hw: pointer to hardware structure
155 * @speed: pointer to link speed
156 * @autoneg: boolean auto-negotiation value
158 * Determines the default link settings by reading the AUTOC register.
160 static s32 ixgbe_get_copper_link_settings_82598(struct ixgbe_hw *hw,
161 u32 *speed, bool *autoneg)
163 s32 status = IXGBE_ERR_LINK_SETUP;
169 status = ixgbe_read_phy_reg(hw, IXGBE_MDIO_PHY_SPEED_ABILITY,
170 IXGBE_MDIO_PMA_PMD_DEV_TYPE,
174 if (speed_ability & IXGBE_MDIO_PHY_SPEED_10G)
175 *speed |= IXGBE_LINK_SPEED_10GB_FULL;
176 if (speed_ability & IXGBE_MDIO_PHY_SPEED_1G)
177 *speed |= IXGBE_LINK_SPEED_1GB_FULL;
184 * ixgbe_get_media_type_82598 - Determines media type
185 * @hw: pointer to hardware structure
187 * Returns the media type (fiber, copper, backplane)
189 static enum ixgbe_media_type ixgbe_get_media_type_82598(struct ixgbe_hw *hw)
191 enum ixgbe_media_type media_type;
193 /* Media type for I82598 is based on device ID */
194 switch (hw->device_id) {
195 case IXGBE_DEV_ID_82598AF_DUAL_PORT:
196 case IXGBE_DEV_ID_82598AF_SINGLE_PORT:
197 case IXGBE_DEV_ID_82598EB_CX4:
198 case IXGBE_DEV_ID_82598_CX4_DUAL_PORT:
199 case IXGBE_DEV_ID_82598EB_XF_LR:
200 media_type = ixgbe_media_type_fiber;
202 case IXGBE_DEV_ID_82598AT_DUAL_PORT:
203 media_type = ixgbe_media_type_copper;
206 media_type = ixgbe_media_type_unknown;
214 * ixgbe_setup_mac_link_82598 - Configures MAC link settings
215 * @hw: pointer to hardware structure
217 * Configures link settings based on values in the ixgbe_hw struct.
218 * Restarts the link. Performs autonegotiation if needed.
220 static s32 ixgbe_setup_mac_link_82598(struct ixgbe_hw *hw)
227 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
229 if (hw->mac.link_settings_loaded) {
230 autoc_reg &= ~IXGBE_AUTOC_LMS_ATTACH_TYPE;
231 autoc_reg &= ~IXGBE_AUTOC_LMS_MASK;
232 autoc_reg |= hw->mac.link_attach_type;
233 autoc_reg |= hw->mac.link_mode_select;
235 IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc_reg);
236 IXGBE_WRITE_FLUSH(hw);
241 autoc_reg |= IXGBE_AUTOC_AN_RESTART;
242 IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc_reg);
244 /* Only poll for autoneg to complete if specified to do so */
245 if (hw->phy.autoneg_wait_to_complete) {
246 if (hw->mac.link_mode_select == IXGBE_AUTOC_LMS_KX4_AN ||
247 hw->mac.link_mode_select == IXGBE_AUTOC_LMS_KX4_AN_1G_AN) {
248 links_reg = 0; /* Just in case Autoneg time = 0 */
249 for (i = 0; i < IXGBE_AUTO_NEG_TIME; i++) {
250 links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
251 if (links_reg & IXGBE_LINKS_KX_AN_COMP)
255 if (!(links_reg & IXGBE_LINKS_KX_AN_COMP)) {
256 status = IXGBE_ERR_AUTONEG_NOT_COMPLETE;
258 "Autonegotiation did not complete.\n");
264 * We want to save off the original Flow Control configuration just in
265 * case we get disconnected and then reconnected into a different hub
266 * or switch with different Flow Control capabilities.
268 hw->fc.type = hw->fc.original_type;
269 ixgbe_setup_fc(hw, 0);
271 /* Add delay to filter out noises during initial link setup */
278 * ixgbe_check_mac_link_82598 - Get link/speed status
279 * @hw: pointer to hardware structure
280 * @speed: pointer to link speed
281 * @link_up: true is link is up, false otherwise
282 * @link_up_wait_to_complete: bool used to wait for link up or not
284 * Reads the links register to determine if link is up and the current speed
286 static s32 ixgbe_check_mac_link_82598(struct ixgbe_hw *hw, u32 *speed,
288 bool link_up_wait_to_complete)
293 links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
295 if (link_up_wait_to_complete) {
296 for (i = 0; i < IXGBE_LINK_UP_TIME; i++) {
297 if (links_reg & IXGBE_LINKS_UP) {
304 links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
307 if (links_reg & IXGBE_LINKS_UP)
313 if (links_reg & IXGBE_LINKS_SPEED)
314 *speed = IXGBE_LINK_SPEED_10GB_FULL;
316 *speed = IXGBE_LINK_SPEED_1GB_FULL;
322 * ixgbe_setup_mac_link_speed_82598 - Set MAC link speed
323 * @hw: pointer to hardware structure
324 * @speed: new link speed
325 * @autoneg: true if auto-negotiation enabled
326 * @autoneg_wait_to_complete: true if waiting is needed to complete
328 * Set the link speed in the AUTOC register and restarts link.
330 static s32 ixgbe_setup_mac_link_speed_82598(struct ixgbe_hw *hw,
331 u32 speed, bool autoneg,
332 bool autoneg_wait_to_complete)
336 /* If speed is 10G, then check for CX4 or XAUI. */
337 if ((speed == IXGBE_LINK_SPEED_10GB_FULL) &&
338 (!(hw->mac.link_attach_type & IXGBE_AUTOC_10G_KX4)))
339 hw->mac.link_mode_select = IXGBE_AUTOC_LMS_10G_LINK_NO_AN;
340 else if ((speed == IXGBE_LINK_SPEED_1GB_FULL) && (!autoneg))
341 hw->mac.link_mode_select = IXGBE_AUTOC_LMS_1G_LINK_NO_AN;
343 /* BX mode - Autonegotiate 1G */
344 if (!(hw->mac.link_attach_type & IXGBE_AUTOC_1G_PMA_PMD))
345 hw->mac.link_mode_select = IXGBE_AUTOC_LMS_1G_AN;
346 else /* KX/KX4 mode */
347 hw->mac.link_mode_select = IXGBE_AUTOC_LMS_KX4_AN_1G_AN;
349 status = IXGBE_ERR_LINK_SETUP;
353 hw->phy.autoneg_wait_to_complete = autoneg_wait_to_complete;
355 hw->mac.link_settings_loaded = true;
357 * Setup and restart the link based on the new values in
358 * ixgbe_hw This will write the AUTOC register based on the new
361 hw->mac.ops.setup_link(hw);
369 * ixgbe_setup_copper_link_82598 - Setup copper link settings
370 * @hw: pointer to hardware structure
372 * Configures link settings based on values in the ixgbe_hw struct.
373 * Restarts the link. Performs autonegotiation if needed. Restart
374 * phy and wait for autonegotiate to finish. Then synchronize the
377 static s32 ixgbe_setup_copper_link_82598(struct ixgbe_hw *hw)
381 /* Restart autonegotiation on PHY */
382 if (hw->phy.ops.setup_link)
383 status = hw->phy.ops.setup_link(hw);
385 /* Set MAC to KX/KX4 autoneg, which defaultis to Parallel detection */
386 hw->mac.link_attach_type = (IXGBE_AUTOC_10G_KX4 | IXGBE_AUTOC_1G_KX);
387 hw->mac.link_mode_select = IXGBE_AUTOC_LMS_KX4_AN;
390 hw->mac.ops.setup_link(hw);
396 * ixgbe_setup_copper_link_speed_82598 - Set the PHY autoneg advertised field
397 * @hw: pointer to hardware structure
398 * @speed: new link speed
399 * @autoneg: true if autonegotiation enabled
400 * @autoneg_wait_to_complete: true if waiting is needed to complete
402 * Sets the link speed in the AUTOC register in the MAC and restarts link.
404 static s32 ixgbe_setup_copper_link_speed_82598(struct ixgbe_hw *hw, u32 speed,
406 bool autoneg_wait_to_complete)
410 /* Setup the PHY according to input speed */
411 if (hw->phy.ops.setup_link_speed)
412 status = hw->phy.ops.setup_link_speed(hw, speed, autoneg,
413 autoneg_wait_to_complete);
415 /* Set MAC to KX/KX4 autoneg, which defaults to Parallel detection */
416 hw->mac.link_attach_type = (IXGBE_AUTOC_10G_KX4 | IXGBE_AUTOC_1G_KX);
417 hw->mac.link_mode_select = IXGBE_AUTOC_LMS_KX4_AN;
420 hw->mac.ops.setup_link(hw);
426 * ixgbe_reset_hw_82598 - Performs hardware reset
427 * @hw: pointer to hardware structure
429 * Resets the hardware by reseting the transmit and receive units, masks and
430 * clears all interrupts, performing a PHY reset, and performing a link (MAC)
433 static s32 ixgbe_reset_hw_82598(struct ixgbe_hw *hw)
442 /* Call adapter stop to disable tx/rx and clear interrupts */
443 ixgbe_stop_adapter(hw);
446 * Power up the Atlas TX lanes if they are currently powered down.
447 * Atlas TX lanes are powered down for MAC loopback tests, but
448 * they are not automatically restored on reset.
450 ixgbe_read_analog_reg8(hw, IXGBE_ATLAS_PDN_LPBK, &analog_val);
451 if (analog_val & IXGBE_ATLAS_PDN_TX_REG_EN) {
452 /* Enable TX Atlas so packets can be transmitted again */
453 ixgbe_read_analog_reg8(hw, IXGBE_ATLAS_PDN_LPBK, &analog_val);
454 analog_val &= ~IXGBE_ATLAS_PDN_TX_REG_EN;
455 ixgbe_write_analog_reg8(hw, IXGBE_ATLAS_PDN_LPBK, analog_val);
457 ixgbe_read_analog_reg8(hw, IXGBE_ATLAS_PDN_10G, &analog_val);
458 analog_val &= ~IXGBE_ATLAS_PDN_TX_10G_QL_ALL;
459 ixgbe_write_analog_reg8(hw, IXGBE_ATLAS_PDN_10G, analog_val);
461 ixgbe_read_analog_reg8(hw, IXGBE_ATLAS_PDN_1G, &analog_val);
462 analog_val &= ~IXGBE_ATLAS_PDN_TX_1G_QL_ALL;
463 ixgbe_write_analog_reg8(hw, IXGBE_ATLAS_PDN_1G, analog_val);
465 ixgbe_read_analog_reg8(hw, IXGBE_ATLAS_PDN_AN, &analog_val);
466 analog_val &= ~IXGBE_ATLAS_PDN_TX_AN_QL_ALL;
467 ixgbe_write_analog_reg8(hw, IXGBE_ATLAS_PDN_AN, analog_val);
474 * Prevent the PCI-E bus from from hanging by disabling PCI-E master
475 * access and verify no pending requests before reset
477 if (ixgbe_disable_pcie_master(hw) != 0) {
478 status = IXGBE_ERR_MASTER_REQUESTS_PENDING;
479 hw_dbg(hw, "PCI-E Master disable polling has failed.\n");
483 * Issue global reset to the MAC. This needs to be a SW reset.
484 * If link reset is used, it might reset the MAC when mng is using it
486 ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL);
487 IXGBE_WRITE_REG(hw, IXGBE_CTRL, (ctrl | IXGBE_CTRL_RST));
488 IXGBE_WRITE_FLUSH(hw);
490 /* Poll for reset bit to self-clear indicating reset is complete */
491 for (i = 0; i < 10; i++) {
493 ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL);
494 if (!(ctrl & IXGBE_CTRL_RST))
497 if (ctrl & IXGBE_CTRL_RST) {
498 status = IXGBE_ERR_RESET_FAILED;
499 hw_dbg(hw, "Reset polling failed to complete.\n");
504 gheccr = IXGBE_READ_REG(hw, IXGBE_GHECCR);
505 gheccr &= ~((1 << 21) | (1 << 18) | (1 << 9) | (1 << 6));
506 IXGBE_WRITE_REG(hw, IXGBE_GHECCR, gheccr);
509 * AUTOC register which stores link settings gets cleared
510 * and reloaded from EEPROM after reset. We need to restore
511 * our stored value from init in case SW changed the attach
512 * type or speed. If this is the first time and link settings
513 * have not been stored, store default settings from AUTOC.
515 autoc = IXGBE_READ_REG(hw, IXGBE_AUTOC);
516 if (hw->mac.link_settings_loaded) {
517 autoc &= ~(IXGBE_AUTOC_LMS_ATTACH_TYPE);
518 autoc &= ~(IXGBE_AUTOC_LMS_MASK);
519 autoc |= hw->mac.link_attach_type;
520 autoc |= hw->mac.link_mode_select;
521 IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc);
523 hw->mac.link_attach_type =
524 (autoc & IXGBE_AUTOC_LMS_ATTACH_TYPE);
525 hw->mac.link_mode_select = (autoc & IXGBE_AUTOC_LMS_MASK);
526 hw->mac.link_settings_loaded = true;
529 /* Store the permanent mac address */
530 ixgbe_get_mac_addr(hw, hw->mac.perm_addr);
535 static struct ixgbe_mac_operations mac_ops_82598 = {
536 .reset = &ixgbe_reset_hw_82598,
537 .get_media_type = &ixgbe_get_media_type_82598,
538 .setup_link = &ixgbe_setup_mac_link_82598,
539 .check_link = &ixgbe_check_mac_link_82598,
540 .setup_link_speed = &ixgbe_setup_mac_link_speed_82598,
541 .get_link_settings = &ixgbe_get_link_settings_82598,
544 struct ixgbe_info ixgbe_82598_info = {
545 .mac = ixgbe_mac_82598EB,
546 .get_invariants = &ixgbe_get_invariants_82598,
547 .mac_ops = &mac_ops_82598,