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
40 static s32 ixgbe_get_invariants_82598(struct ixgbe_hw *hw);
41 static s32 ixgbe_get_link_settings_82598(struct ixgbe_hw *hw, u32 *speed,
43 static s32 ixgbe_get_copper_link_settings_82598(struct ixgbe_hw *hw,
44 u32 *speed, bool *autoneg);
45 static enum ixgbe_media_type ixgbe_get_media_type_82598(struct ixgbe_hw *hw);
46 static s32 ixgbe_setup_mac_link_82598(struct ixgbe_hw *hw);
47 static s32 ixgbe_check_mac_link_82598(struct ixgbe_hw *hw, u32 *speed,
49 static s32 ixgbe_setup_mac_link_speed_82598(struct ixgbe_hw *hw, u32 speed,
51 bool autoneg_wait_to_complete);
52 static s32 ixgbe_setup_copper_link_82598(struct ixgbe_hw *hw);
53 static s32 ixgbe_setup_copper_link_speed_82598(struct ixgbe_hw *hw, u32 speed,
55 bool autoneg_wait_to_complete);
56 static s32 ixgbe_reset_hw_82598(struct ixgbe_hw *hw);
59 static s32 ixgbe_get_invariants_82598(struct ixgbe_hw *hw)
61 hw->mac.num_rx_queues = IXGBE_82598_MAX_RX_QUEUES;
62 hw->mac.num_tx_queues = IXGBE_82598_MAX_TX_QUEUES;
63 hw->mac.num_rx_addrs = IXGBE_82598_RAR_ENTRIES;
65 /* PHY ops are filled in by default properly for Fiber only */
66 if (hw->mac.ops.get_media_type(hw) == ixgbe_media_type_copper) {
67 hw->mac.ops.setup_link = &ixgbe_setup_copper_link_82598;
68 hw->mac.ops.setup_link_speed = &ixgbe_setup_copper_link_speed_82598;
69 hw->mac.ops.get_link_settings =
70 &ixgbe_get_copper_link_settings_82598;
72 /* Call PHY identify routine to get the phy type */
73 ixgbe_identify_phy(hw);
75 switch (hw->phy.type) {
77 hw->phy.ops.setup_link = &ixgbe_setup_tnx_phy_link;
78 hw->phy.ops.check_link = &ixgbe_check_tnx_phy_link;
79 hw->phy.ops.setup_link_speed =
80 &ixgbe_setup_tnx_phy_link_speed;
91 * ixgbe_get_link_settings_82598 - Determines default link settings
92 * @hw: pointer to hardware structure
93 * @speed: pointer to link speed
94 * @autoneg: boolean auto-negotiation value
96 * Determines the default link settings by reading the AUTOC register.
98 static s32 ixgbe_get_link_settings_82598(struct ixgbe_hw *hw, u32 *speed,
104 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
106 if (hw->mac.link_settings_loaded) {
107 autoc_reg &= ~IXGBE_AUTOC_LMS_ATTACH_TYPE;
108 autoc_reg &= ~IXGBE_AUTOC_LMS_MASK;
109 autoc_reg |= hw->mac.link_attach_type;
110 autoc_reg |= hw->mac.link_mode_select;
113 switch (autoc_reg & IXGBE_AUTOC_LMS_MASK) {
114 case IXGBE_AUTOC_LMS_1G_LINK_NO_AN:
115 *speed = IXGBE_LINK_SPEED_1GB_FULL;
119 case IXGBE_AUTOC_LMS_10G_LINK_NO_AN:
120 *speed = IXGBE_LINK_SPEED_10GB_FULL;
124 case IXGBE_AUTOC_LMS_1G_AN:
125 *speed = IXGBE_LINK_SPEED_1GB_FULL;
129 case IXGBE_AUTOC_LMS_KX4_AN:
130 case IXGBE_AUTOC_LMS_KX4_AN_1G_AN:
131 *speed = IXGBE_LINK_SPEED_UNKNOWN;
132 if (autoc_reg & IXGBE_AUTOC_KX4_SUPP)
133 *speed |= IXGBE_LINK_SPEED_10GB_FULL;
134 if (autoc_reg & IXGBE_AUTOC_KX_SUPP)
135 *speed |= IXGBE_LINK_SPEED_1GB_FULL;
140 status = IXGBE_ERR_LINK_SETUP;
148 * ixgbe_get_copper_link_settings_82598 - Determines default link settings
149 * @hw: pointer to hardware structure
150 * @speed: pointer to link speed
151 * @autoneg: boolean auto-negotiation value
153 * Determines the default link settings by reading the AUTOC register.
155 static s32 ixgbe_get_copper_link_settings_82598(struct ixgbe_hw *hw,
156 u32 *speed, bool *autoneg)
158 s32 status = IXGBE_ERR_LINK_SETUP;
164 status = ixgbe_read_phy_reg(hw, IXGBE_MDIO_PHY_SPEED_ABILITY,
165 IXGBE_MDIO_PMA_PMD_DEV_TYPE,
169 if (speed_ability & IXGBE_MDIO_PHY_SPEED_10G)
170 *speed |= IXGBE_LINK_SPEED_10GB_FULL;
171 if (speed_ability & IXGBE_MDIO_PHY_SPEED_1G)
172 *speed |= IXGBE_LINK_SPEED_1GB_FULL;
179 * ixgbe_get_media_type_82598 - Determines media type
180 * @hw: pointer to hardware structure
182 * Returns the media type (fiber, copper, backplane)
184 static enum ixgbe_media_type ixgbe_get_media_type_82598(struct ixgbe_hw *hw)
186 enum ixgbe_media_type media_type;
188 /* Media type for I82598 is based on device ID */
189 switch (hw->device_id) {
190 case IXGBE_DEV_ID_82598AF_DUAL_PORT:
191 case IXGBE_DEV_ID_82598AF_SINGLE_PORT:
192 case IXGBE_DEV_ID_82598EB_CX4:
193 case IXGBE_DEV_ID_82598_CX4_DUAL_PORT:
194 media_type = ixgbe_media_type_fiber;
196 case IXGBE_DEV_ID_82598AT_DUAL_PORT:
197 media_type = ixgbe_media_type_copper;
200 media_type = ixgbe_media_type_unknown;
208 * ixgbe_setup_mac_link_82598 - Configures MAC link settings
209 * @hw: pointer to hardware structure
211 * Configures link settings based on values in the ixgbe_hw struct.
212 * Restarts the link. Performs autonegotiation if needed.
214 static s32 ixgbe_setup_mac_link_82598(struct ixgbe_hw *hw)
221 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
223 if (hw->mac.link_settings_loaded) {
224 autoc_reg &= ~IXGBE_AUTOC_LMS_ATTACH_TYPE;
225 autoc_reg &= ~IXGBE_AUTOC_LMS_MASK;
226 autoc_reg |= hw->mac.link_attach_type;
227 autoc_reg |= hw->mac.link_mode_select;
229 IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc_reg);
230 IXGBE_WRITE_FLUSH(hw);
235 autoc_reg |= IXGBE_AUTOC_AN_RESTART;
236 IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc_reg);
238 /* Only poll for autoneg to complete if specified to do so */
239 if (hw->phy.autoneg_wait_to_complete) {
240 if (hw->mac.link_mode_select == IXGBE_AUTOC_LMS_KX4_AN ||
241 hw->mac.link_mode_select == IXGBE_AUTOC_LMS_KX4_AN_1G_AN) {
242 links_reg = 0; /* Just in case Autoneg time = 0 */
243 for (i = 0; i < IXGBE_AUTO_NEG_TIME; i++) {
244 links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
245 if (links_reg & IXGBE_LINKS_KX_AN_COMP)
249 if (!(links_reg & IXGBE_LINKS_KX_AN_COMP)) {
250 status = IXGBE_ERR_AUTONEG_NOT_COMPLETE;
252 "Autonegotiation did not complete.\n");
258 * We want to save off the original Flow Control configuration just in
259 * case we get disconnected and then reconnected into a different hub
260 * or switch with different Flow Control capabilities.
262 hw->fc.type = hw->fc.original_type;
263 ixgbe_setup_fc(hw, 0);
265 /* Add delay to filter out noises during initial link setup */
272 * ixgbe_check_mac_link_82598 - Get link/speed status
273 * @hw: pointer to hardware structure
274 * @speed: pointer to link speed
275 * @link_up: true is link is up, false otherwise
277 * Reads the links register to determine if link is up and the current speed
279 static s32 ixgbe_check_mac_link_82598(struct ixgbe_hw *hw, u32 *speed,
284 links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
286 if (links_reg & IXGBE_LINKS_UP)
291 if (links_reg & IXGBE_LINKS_SPEED)
292 *speed = IXGBE_LINK_SPEED_10GB_FULL;
294 *speed = IXGBE_LINK_SPEED_1GB_FULL;
300 * ixgbe_setup_mac_link_speed_82598 - Set MAC link speed
301 * @hw: pointer to hardware structure
302 * @speed: new link speed
303 * @autoneg: true if auto-negotiation enabled
304 * @autoneg_wait_to_complete: true if waiting is needed to complete
306 * Set the link speed in the AUTOC register and restarts link.
308 static s32 ixgbe_setup_mac_link_speed_82598(struct ixgbe_hw *hw,
309 u32 speed, bool autoneg,
310 bool autoneg_wait_to_complete)
314 /* If speed is 10G, then check for CX4 or XAUI. */
315 if ((speed == IXGBE_LINK_SPEED_10GB_FULL) &&
316 (!(hw->mac.link_attach_type & IXGBE_AUTOC_10G_KX4)))
317 hw->mac.link_mode_select = IXGBE_AUTOC_LMS_10G_LINK_NO_AN;
318 else if ((speed == IXGBE_LINK_SPEED_1GB_FULL) && (!autoneg))
319 hw->mac.link_mode_select = IXGBE_AUTOC_LMS_1G_LINK_NO_AN;
321 /* BX mode - Autonegotiate 1G */
322 if (!(hw->mac.link_attach_type & IXGBE_AUTOC_1G_PMA_PMD))
323 hw->mac.link_mode_select = IXGBE_AUTOC_LMS_1G_AN;
324 else /* KX/KX4 mode */
325 hw->mac.link_mode_select = IXGBE_AUTOC_LMS_KX4_AN_1G_AN;
327 status = IXGBE_ERR_LINK_SETUP;
331 hw->phy.autoneg_wait_to_complete = autoneg_wait_to_complete;
333 hw->mac.link_settings_loaded = true;
335 * Setup and restart the link based on the new values in
336 * ixgbe_hw This will write the AUTOC register based on the new
339 hw->mac.ops.setup_link(hw);
347 * ixgbe_setup_copper_link_82598 - Setup copper link settings
348 * @hw: pointer to hardware structure
350 * Configures link settings based on values in the ixgbe_hw struct.
351 * Restarts the link. Performs autonegotiation if needed. Restart
352 * phy and wait for autonegotiate to finish. Then synchronize the
355 static s32 ixgbe_setup_copper_link_82598(struct ixgbe_hw *hw)
359 /* Restart autonegotiation on PHY */
360 if (hw->phy.ops.setup_link)
361 status = hw->phy.ops.setup_link(hw);
363 /* Set MAC to KX/KX4 autoneg, which defaultis to Parallel detection */
364 hw->mac.link_attach_type = (IXGBE_AUTOC_10G_KX4 | IXGBE_AUTOC_1G_KX);
365 hw->mac.link_mode_select = IXGBE_AUTOC_LMS_KX4_AN;
368 hw->mac.ops.setup_link(hw);
374 * ixgbe_setup_copper_link_speed_82598 - Set the PHY autoneg advertised field
375 * @hw: pointer to hardware structure
376 * @speed: new link speed
377 * @autoneg: true if autonegotiation enabled
378 * @autoneg_wait_to_complete: true if waiting is needed to complete
380 * Sets the link speed in the AUTOC register in the MAC and restarts link.
382 static s32 ixgbe_setup_copper_link_speed_82598(struct ixgbe_hw *hw, u32 speed,
384 bool autoneg_wait_to_complete)
388 /* Setup the PHY according to input speed */
389 if (hw->phy.ops.setup_link_speed)
390 status = hw->phy.ops.setup_link_speed(hw, speed, autoneg,
391 autoneg_wait_to_complete);
393 /* Set MAC to KX/KX4 autoneg, which defaults to Parallel detection */
394 hw->mac.link_attach_type = (IXGBE_AUTOC_10G_KX4 | IXGBE_AUTOC_1G_KX);
395 hw->mac.link_mode_select = IXGBE_AUTOC_LMS_KX4_AN;
398 hw->mac.ops.setup_link(hw);
404 * ixgbe_reset_hw_82598 - Performs hardware reset
405 * @hw: pointer to hardware structure
407 * Resets the hardware by reseting the transmit and receive units, masks and
408 * clears all interrupts, performing a PHY reset, and performing a link (MAC)
411 static s32 ixgbe_reset_hw_82598(struct ixgbe_hw *hw)
420 /* Call adapter stop to disable tx/rx and clear interrupts */
421 ixgbe_stop_adapter(hw);
424 * Power up the Atlas TX lanes if they are currently powered down.
425 * Atlas TX lanes are powered down for MAC loopback tests, but
426 * they are not automatically restored on reset.
428 ixgbe_read_analog_reg8(hw, IXGBE_ATLAS_PDN_LPBK, &analog_val);
429 if (analog_val & IXGBE_ATLAS_PDN_TX_REG_EN) {
430 /* Enable TX Atlas so packets can be transmitted again */
431 ixgbe_read_analog_reg8(hw, IXGBE_ATLAS_PDN_LPBK, &analog_val);
432 analog_val &= ~IXGBE_ATLAS_PDN_TX_REG_EN;
433 ixgbe_write_analog_reg8(hw, IXGBE_ATLAS_PDN_LPBK, analog_val);
435 ixgbe_read_analog_reg8(hw, IXGBE_ATLAS_PDN_10G, &analog_val);
436 analog_val &= ~IXGBE_ATLAS_PDN_TX_10G_QL_ALL;
437 ixgbe_write_analog_reg8(hw, IXGBE_ATLAS_PDN_10G, analog_val);
439 ixgbe_read_analog_reg8(hw, IXGBE_ATLAS_PDN_1G, &analog_val);
440 analog_val &= ~IXGBE_ATLAS_PDN_TX_1G_QL_ALL;
441 ixgbe_write_analog_reg8(hw, IXGBE_ATLAS_PDN_1G, analog_val);
443 ixgbe_read_analog_reg8(hw, IXGBE_ATLAS_PDN_AN, &analog_val);
444 analog_val &= ~IXGBE_ATLAS_PDN_TX_AN_QL_ALL;
445 ixgbe_write_analog_reg8(hw, IXGBE_ATLAS_PDN_AN, analog_val);
452 * Prevent the PCI-E bus from from hanging by disabling PCI-E master
453 * access and verify no pending requests before reset
455 if (ixgbe_disable_pcie_master(hw) != 0) {
456 status = IXGBE_ERR_MASTER_REQUESTS_PENDING;
457 hw_dbg(hw, "PCI-E Master disable polling has failed.\n");
461 * Issue global reset to the MAC. This needs to be a SW reset.
462 * If link reset is used, it might reset the MAC when mng is using it
464 ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL);
465 IXGBE_WRITE_REG(hw, IXGBE_CTRL, (ctrl | IXGBE_CTRL_RST));
466 IXGBE_WRITE_FLUSH(hw);
468 /* Poll for reset bit to self-clear indicating reset is complete */
469 for (i = 0; i < 10; i++) {
471 ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL);
472 if (!(ctrl & IXGBE_CTRL_RST))
475 if (ctrl & IXGBE_CTRL_RST) {
476 status = IXGBE_ERR_RESET_FAILED;
477 hw_dbg(hw, "Reset polling failed to complete.\n");
482 gheccr = IXGBE_READ_REG(hw, IXGBE_GHECCR);
483 gheccr &= ~((1 << 21) | (1 << 18) | (1 << 9) | (1 << 6));
484 IXGBE_WRITE_REG(hw, IXGBE_GHECCR, gheccr);
487 * AUTOC register which stores link settings gets cleared
488 * and reloaded from EEPROM after reset. We need to restore
489 * our stored value from init in case SW changed the attach
490 * type or speed. If this is the first time and link settings
491 * have not been stored, store default settings from AUTOC.
493 autoc = IXGBE_READ_REG(hw, IXGBE_AUTOC);
494 if (hw->mac.link_settings_loaded) {
495 autoc &= ~(IXGBE_AUTOC_LMS_ATTACH_TYPE);
496 autoc &= ~(IXGBE_AUTOC_LMS_MASK);
497 autoc |= hw->mac.link_attach_type;
498 autoc |= hw->mac.link_mode_select;
499 IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc);
501 hw->mac.link_attach_type =
502 (autoc & IXGBE_AUTOC_LMS_ATTACH_TYPE);
503 hw->mac.link_mode_select = (autoc & IXGBE_AUTOC_LMS_MASK);
504 hw->mac.link_settings_loaded = true;
507 /* Store the permanent mac address */
508 ixgbe_get_mac_addr(hw, hw->mac.perm_addr);
513 static struct ixgbe_mac_operations mac_ops_82598 = {
514 .reset = &ixgbe_reset_hw_82598,
515 .get_media_type = &ixgbe_get_media_type_82598,
516 .setup_link = &ixgbe_setup_mac_link_82598,
517 .check_link = &ixgbe_check_mac_link_82598,
518 .setup_link_speed = &ixgbe_setup_mac_link_speed_82598,
519 .get_link_settings = &ixgbe_get_link_settings_82598,
522 struct ixgbe_info ixgbe_82598_info = {
523 .mac = ixgbe_mac_82598EB,
524 .get_invariants = &ixgbe_get_invariants_82598,
525 .mac_ops = &mac_ops_82598,