1 /*******************************************************************************
3 Intel(R) Gigabit Ethernet Linux driver
4 Copyright(c) 2007-2009 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 *******************************************************************************/
32 #include <linux/types.h>
33 #include <linux/if_ether.h>
35 #include "e1000_mac.h"
36 #include "e1000_82575.h"
38 static s32 igb_get_invariants_82575(struct e1000_hw *);
39 static s32 igb_acquire_phy_82575(struct e1000_hw *);
40 static void igb_release_phy_82575(struct e1000_hw *);
41 static s32 igb_acquire_nvm_82575(struct e1000_hw *);
42 static void igb_release_nvm_82575(struct e1000_hw *);
43 static s32 igb_check_for_link_82575(struct e1000_hw *);
44 static s32 igb_get_cfg_done_82575(struct e1000_hw *);
45 static s32 igb_init_hw_82575(struct e1000_hw *);
46 static s32 igb_phy_hw_reset_sgmii_82575(struct e1000_hw *);
47 static s32 igb_read_phy_reg_sgmii_82575(struct e1000_hw *, u32, u16 *);
48 static s32 igb_read_phy_reg_82580(struct e1000_hw *, u32, u16 *);
49 static s32 igb_write_phy_reg_82580(struct e1000_hw *, u32, u16);
50 static s32 igb_reset_hw_82575(struct e1000_hw *);
51 static s32 igb_reset_hw_82580(struct e1000_hw *);
52 static s32 igb_set_d0_lplu_state_82575(struct e1000_hw *, bool);
53 static s32 igb_setup_copper_link_82575(struct e1000_hw *);
54 static s32 igb_setup_serdes_link_82575(struct e1000_hw *);
55 static s32 igb_write_phy_reg_sgmii_82575(struct e1000_hw *, u32, u16);
56 static void igb_clear_hw_cntrs_82575(struct e1000_hw *);
57 static s32 igb_acquire_swfw_sync_82575(struct e1000_hw *, u16);
58 static s32 igb_get_pcs_speed_and_duplex_82575(struct e1000_hw *, u16 *,
60 static s32 igb_get_phy_id_82575(struct e1000_hw *);
61 static void igb_release_swfw_sync_82575(struct e1000_hw *, u16);
62 static bool igb_sgmii_active_82575(struct e1000_hw *);
63 static s32 igb_reset_init_script_82575(struct e1000_hw *);
64 static s32 igb_read_mac_addr_82575(struct e1000_hw *);
65 static s32 igb_set_pcie_completion_timeout(struct e1000_hw *hw);
66 static s32 igb_reset_mdicnfg_82580(struct e1000_hw *hw);
68 static const u16 e1000_82580_rxpbs_table[] =
69 { 36, 72, 144, 1, 2, 4, 8, 16,
71 #define E1000_82580_RXPBS_TABLE_SIZE \
72 (sizeof(e1000_82580_rxpbs_table)/sizeof(u16))
75 * igb_sgmii_uses_mdio_82575 - Determine if I2C pins are for external MDIO
76 * @hw: pointer to the HW structure
78 * Called to determine if the I2C pins are being used for I2C or as an
79 * external MDIO interface since the two options are mutually exclusive.
81 static bool igb_sgmii_uses_mdio_82575(struct e1000_hw *hw)
84 bool ext_mdio = false;
86 switch (hw->mac.type) {
89 reg = rd32(E1000_MDIC);
90 ext_mdio = !!(reg & E1000_MDIC_DEST);
94 reg = rd32(E1000_MDICNFG);
95 ext_mdio = !!(reg & E1000_MDICNFG_EXT_MDIO);
103 static s32 igb_get_invariants_82575(struct e1000_hw *hw)
105 struct e1000_phy_info *phy = &hw->phy;
106 struct e1000_nvm_info *nvm = &hw->nvm;
107 struct e1000_mac_info *mac = &hw->mac;
108 struct e1000_dev_spec_82575 * dev_spec = &hw->dev_spec._82575;
114 switch (hw->device_id) {
115 case E1000_DEV_ID_82575EB_COPPER:
116 case E1000_DEV_ID_82575EB_FIBER_SERDES:
117 case E1000_DEV_ID_82575GB_QUAD_COPPER:
118 mac->type = e1000_82575;
120 case E1000_DEV_ID_82576:
121 case E1000_DEV_ID_82576_NS:
122 case E1000_DEV_ID_82576_NS_SERDES:
123 case E1000_DEV_ID_82576_FIBER:
124 case E1000_DEV_ID_82576_SERDES:
125 case E1000_DEV_ID_82576_QUAD_COPPER:
126 case E1000_DEV_ID_82576_QUAD_COPPER_ET2:
127 case E1000_DEV_ID_82576_SERDES_QUAD:
128 mac->type = e1000_82576;
130 case E1000_DEV_ID_82580_COPPER:
131 case E1000_DEV_ID_82580_FIBER:
132 case E1000_DEV_ID_82580_QUAD_FIBER:
133 case E1000_DEV_ID_82580_SERDES:
134 case E1000_DEV_ID_82580_SGMII:
135 case E1000_DEV_ID_82580_COPPER_DUAL:
136 case E1000_DEV_ID_DH89XXCC_SGMII:
137 case E1000_DEV_ID_DH89XXCC_SERDES:
138 case E1000_DEV_ID_DH89XXCC_BACKPLANE:
139 case E1000_DEV_ID_DH89XXCC_SFP:
140 mac->type = e1000_82580;
142 case E1000_DEV_ID_I350_COPPER:
143 case E1000_DEV_ID_I350_FIBER:
144 case E1000_DEV_ID_I350_SERDES:
145 case E1000_DEV_ID_I350_SGMII:
146 mac->type = e1000_i350;
149 return -E1000_ERR_MAC_INIT;
155 * The 82575 uses bits 22:23 for link mode. The mode can be changed
156 * based on the EEPROM. We cannot rely upon device ID. There
157 * is no distinguishable difference between fiber and internal
158 * SerDes mode on the 82575. There can be an external PHY attached
159 * on the SGMII interface. For this, we'll set sgmii_active to true.
161 phy->media_type = e1000_media_type_copper;
162 dev_spec->sgmii_active = false;
164 ctrl_ext = rd32(E1000_CTRL_EXT);
165 switch (ctrl_ext & E1000_CTRL_EXT_LINK_MODE_MASK) {
166 case E1000_CTRL_EXT_LINK_MODE_SGMII:
167 dev_spec->sgmii_active = true;
169 case E1000_CTRL_EXT_LINK_MODE_1000BASE_KX:
170 case E1000_CTRL_EXT_LINK_MODE_PCIE_SERDES:
171 hw->phy.media_type = e1000_media_type_internal_serdes;
177 /* Set mta register count */
178 mac->mta_reg_count = 128;
179 /* Set rar entry count */
180 mac->rar_entry_count = E1000_RAR_ENTRIES_82575;
181 if (mac->type == e1000_82576)
182 mac->rar_entry_count = E1000_RAR_ENTRIES_82576;
183 if (mac->type == e1000_82580)
184 mac->rar_entry_count = E1000_RAR_ENTRIES_82580;
185 if (mac->type == e1000_i350)
186 mac->rar_entry_count = E1000_RAR_ENTRIES_I350;
188 if (mac->type >= e1000_82580)
189 mac->ops.reset_hw = igb_reset_hw_82580;
191 mac->ops.reset_hw = igb_reset_hw_82575;
192 /* Set if part includes ASF firmware */
193 mac->asf_firmware_present = true;
194 /* Set if manageability features are enabled. */
195 mac->arc_subsystem_valid =
196 (rd32(E1000_FWSM) & E1000_FWSM_MODE_MASK)
198 /* enable EEE on i350 parts */
199 if (mac->type == e1000_i350)
200 dev_spec->eee_disable = false;
202 dev_spec->eee_disable = true;
203 /* physical interface link setup */
204 mac->ops.setup_physical_interface =
205 (hw->phy.media_type == e1000_media_type_copper)
206 ? igb_setup_copper_link_82575
207 : igb_setup_serdes_link_82575;
209 /* NVM initialization */
210 eecd = rd32(E1000_EECD);
212 nvm->opcode_bits = 8;
214 switch (nvm->override) {
215 case e1000_nvm_override_spi_large:
217 nvm->address_bits = 16;
219 case e1000_nvm_override_spi_small:
221 nvm->address_bits = 8;
224 nvm->page_size = eecd & E1000_EECD_ADDR_BITS ? 32 : 8;
225 nvm->address_bits = eecd & E1000_EECD_ADDR_BITS ? 16 : 8;
229 nvm->type = e1000_nvm_eeprom_spi;
231 size = (u16)((eecd & E1000_EECD_SIZE_EX_MASK) >>
232 E1000_EECD_SIZE_EX_SHIFT);
235 * Added to a constant, "size" becomes the left-shift value
236 * for setting word_size.
238 size += NVM_WORD_SIZE_BASE_SHIFT;
240 /* EEPROM access above 16k is unsupported */
243 nvm->word_size = 1 << size;
245 /* if part supports SR-IOV then initialize mailbox parameters */
249 igb_init_mbx_params_pf(hw);
255 /* setup PHY parameters */
256 if (phy->media_type != e1000_media_type_copper) {
257 phy->type = e1000_phy_none;
261 phy->autoneg_mask = AUTONEG_ADVERTISE_SPEED_DEFAULT;
262 phy->reset_delay_us = 100;
264 ctrl_ext = rd32(E1000_CTRL_EXT);
266 /* PHY function pointers */
267 if (igb_sgmii_active_82575(hw)) {
268 phy->ops.reset = igb_phy_hw_reset_sgmii_82575;
269 ctrl_ext |= E1000_CTRL_I2C_ENA;
271 phy->ops.reset = igb_phy_hw_reset;
272 ctrl_ext &= ~E1000_CTRL_I2C_ENA;
275 wr32(E1000_CTRL_EXT, ctrl_ext);
276 igb_reset_mdicnfg_82580(hw);
278 if (igb_sgmii_active_82575(hw) && !igb_sgmii_uses_mdio_82575(hw)) {
279 phy->ops.read_reg = igb_read_phy_reg_sgmii_82575;
280 phy->ops.write_reg = igb_write_phy_reg_sgmii_82575;
281 } else if (hw->mac.type >= e1000_82580) {
282 phy->ops.read_reg = igb_read_phy_reg_82580;
283 phy->ops.write_reg = igb_write_phy_reg_82580;
285 phy->ops.read_reg = igb_read_phy_reg_igp;
286 phy->ops.write_reg = igb_write_phy_reg_igp;
290 hw->bus.func = (rd32(E1000_STATUS) & E1000_STATUS_FUNC_MASK) >>
291 E1000_STATUS_FUNC_SHIFT;
293 /* Set phy->phy_addr and phy->id. */
294 ret_val = igb_get_phy_id_82575(hw);
298 /* Verify phy id and set remaining function pointers */
300 case I347AT4_E_PHY_ID:
301 case M88E1112_E_PHY_ID:
302 case M88E1111_I_PHY_ID:
303 phy->type = e1000_phy_m88;
304 phy->ops.get_phy_info = igb_get_phy_info_m88;
306 if (phy->id == I347AT4_E_PHY_ID ||
307 phy->id == M88E1112_E_PHY_ID)
308 phy->ops.get_cable_length = igb_get_cable_length_m88_gen2;
310 phy->ops.get_cable_length = igb_get_cable_length_m88;
312 phy->ops.force_speed_duplex = igb_phy_force_speed_duplex_m88;
314 case IGP03E1000_E_PHY_ID:
315 phy->type = e1000_phy_igp_3;
316 phy->ops.get_phy_info = igb_get_phy_info_igp;
317 phy->ops.get_cable_length = igb_get_cable_length_igp_2;
318 phy->ops.force_speed_duplex = igb_phy_force_speed_duplex_igp;
319 phy->ops.set_d0_lplu_state = igb_set_d0_lplu_state_82575;
320 phy->ops.set_d3_lplu_state = igb_set_d3_lplu_state;
322 case I82580_I_PHY_ID:
324 phy->type = e1000_phy_82580;
325 phy->ops.force_speed_duplex = igb_phy_force_speed_duplex_82580;
326 phy->ops.get_cable_length = igb_get_cable_length_82580;
327 phy->ops.get_phy_info = igb_get_phy_info_82580;
330 return -E1000_ERR_PHY;
337 * igb_acquire_phy_82575 - Acquire rights to access PHY
338 * @hw: pointer to the HW structure
340 * Acquire access rights to the correct PHY. This is a
341 * function pointer entry point called by the api module.
343 static s32 igb_acquire_phy_82575(struct e1000_hw *hw)
345 u16 mask = E1000_SWFW_PHY0_SM;
347 if (hw->bus.func == E1000_FUNC_1)
348 mask = E1000_SWFW_PHY1_SM;
349 else if (hw->bus.func == E1000_FUNC_2)
350 mask = E1000_SWFW_PHY2_SM;
351 else if (hw->bus.func == E1000_FUNC_3)
352 mask = E1000_SWFW_PHY3_SM;
354 return igb_acquire_swfw_sync_82575(hw, mask);
358 * igb_release_phy_82575 - Release rights to access PHY
359 * @hw: pointer to the HW structure
361 * A wrapper to release access rights to the correct PHY. This is a
362 * function pointer entry point called by the api module.
364 static void igb_release_phy_82575(struct e1000_hw *hw)
366 u16 mask = E1000_SWFW_PHY0_SM;
368 if (hw->bus.func == E1000_FUNC_1)
369 mask = E1000_SWFW_PHY1_SM;
370 else if (hw->bus.func == E1000_FUNC_2)
371 mask = E1000_SWFW_PHY2_SM;
372 else if (hw->bus.func == E1000_FUNC_3)
373 mask = E1000_SWFW_PHY3_SM;
375 igb_release_swfw_sync_82575(hw, mask);
379 * igb_read_phy_reg_sgmii_82575 - Read PHY register using sgmii
380 * @hw: pointer to the HW structure
381 * @offset: register offset to be read
382 * @data: pointer to the read data
384 * Reads the PHY register at offset using the serial gigabit media independent
385 * interface and stores the retrieved information in data.
387 static s32 igb_read_phy_reg_sgmii_82575(struct e1000_hw *hw, u32 offset,
390 s32 ret_val = -E1000_ERR_PARAM;
392 if (offset > E1000_MAX_SGMII_PHY_REG_ADDR) {
393 hw_dbg("PHY Address %u is out of range\n", offset);
397 ret_val = hw->phy.ops.acquire(hw);
401 ret_val = igb_read_phy_reg_i2c(hw, offset, data);
403 hw->phy.ops.release(hw);
410 * igb_write_phy_reg_sgmii_82575 - Write PHY register using sgmii
411 * @hw: pointer to the HW structure
412 * @offset: register offset to write to
413 * @data: data to write at register offset
415 * Writes the data to PHY register at the offset using the serial gigabit
416 * media independent interface.
418 static s32 igb_write_phy_reg_sgmii_82575(struct e1000_hw *hw, u32 offset,
421 s32 ret_val = -E1000_ERR_PARAM;
424 if (offset > E1000_MAX_SGMII_PHY_REG_ADDR) {
425 hw_dbg("PHY Address %d is out of range\n", offset);
429 ret_val = hw->phy.ops.acquire(hw);
433 ret_val = igb_write_phy_reg_i2c(hw, offset, data);
435 hw->phy.ops.release(hw);
442 * igb_get_phy_id_82575 - Retrieve PHY addr and id
443 * @hw: pointer to the HW structure
445 * Retrieves the PHY address and ID for both PHY's which do and do not use
448 static s32 igb_get_phy_id_82575(struct e1000_hw *hw)
450 struct e1000_phy_info *phy = &hw->phy;
457 * For SGMII PHYs, we try the list of possible addresses until
458 * we find one that works. For non-SGMII PHYs
459 * (e.g. integrated copper PHYs), an address of 1 should
460 * work. The result of this function should mean phy->phy_addr
461 * and phy->id are set correctly.
463 if (!(igb_sgmii_active_82575(hw))) {
465 ret_val = igb_get_phy_id(hw);
469 if (igb_sgmii_uses_mdio_82575(hw)) {
470 switch (hw->mac.type) {
473 mdic = rd32(E1000_MDIC);
474 mdic &= E1000_MDIC_PHY_MASK;
475 phy->addr = mdic >> E1000_MDIC_PHY_SHIFT;
479 mdic = rd32(E1000_MDICNFG);
480 mdic &= E1000_MDICNFG_PHY_MASK;
481 phy->addr = mdic >> E1000_MDICNFG_PHY_SHIFT;
484 ret_val = -E1000_ERR_PHY;
488 ret_val = igb_get_phy_id(hw);
492 /* Power on sgmii phy if it is disabled */
493 ctrl_ext = rd32(E1000_CTRL_EXT);
494 wr32(E1000_CTRL_EXT, ctrl_ext & ~E1000_CTRL_EXT_SDP3_DATA);
499 * The address field in the I2CCMD register is 3 bits and 0 is invalid.
500 * Therefore, we need to test 1-7
502 for (phy->addr = 1; phy->addr < 8; phy->addr++) {
503 ret_val = igb_read_phy_reg_sgmii_82575(hw, PHY_ID1, &phy_id);
505 hw_dbg("Vendor ID 0x%08X read at address %u\n",
508 * At the time of this writing, The M88 part is
509 * the only supported SGMII PHY product.
511 if (phy_id == M88_VENDOR)
514 hw_dbg("PHY address %u was unreadable\n", phy->addr);
518 /* A valid PHY type couldn't be found. */
519 if (phy->addr == 8) {
521 ret_val = -E1000_ERR_PHY;
524 ret_val = igb_get_phy_id(hw);
527 /* restore previous sfp cage power state */
528 wr32(E1000_CTRL_EXT, ctrl_ext);
535 * igb_phy_hw_reset_sgmii_82575 - Performs a PHY reset
536 * @hw: pointer to the HW structure
538 * Resets the PHY using the serial gigabit media independent interface.
540 static s32 igb_phy_hw_reset_sgmii_82575(struct e1000_hw *hw)
545 * This isn't a true "hard" reset, but is the only reset
546 * available to us at this time.
549 hw_dbg("Soft resetting SGMII attached PHY...\n");
552 * SFP documentation requires the following to configure the SPF module
553 * to work on SGMII. No further documentation is given.
555 ret_val = hw->phy.ops.write_reg(hw, 0x1B, 0x8084);
559 ret_val = igb_phy_sw_reset(hw);
566 * igb_set_d0_lplu_state_82575 - Set Low Power Linkup D0 state
567 * @hw: pointer to the HW structure
568 * @active: true to enable LPLU, false to disable
570 * Sets the LPLU D0 state according to the active flag. When
571 * activating LPLU this function also disables smart speed
572 * and vice versa. LPLU will not be activated unless the
573 * device autonegotiation advertisement meets standards of
574 * either 10 or 10/100 or 10/100/1000 at all duplexes.
575 * This is a function pointer entry point only called by
576 * PHY setup routines.
578 static s32 igb_set_d0_lplu_state_82575(struct e1000_hw *hw, bool active)
580 struct e1000_phy_info *phy = &hw->phy;
584 ret_val = phy->ops.read_reg(hw, IGP02E1000_PHY_POWER_MGMT, &data);
589 data |= IGP02E1000_PM_D0_LPLU;
590 ret_val = phy->ops.write_reg(hw, IGP02E1000_PHY_POWER_MGMT,
595 /* When LPLU is enabled, we should disable SmartSpeed */
596 ret_val = phy->ops.read_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
598 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
599 ret_val = phy->ops.write_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
604 data &= ~IGP02E1000_PM_D0_LPLU;
605 ret_val = phy->ops.write_reg(hw, IGP02E1000_PHY_POWER_MGMT,
608 * LPLU and SmartSpeed are mutually exclusive. LPLU is used
609 * during Dx states where the power conservation is most
610 * important. During driver activity we should enable
611 * SmartSpeed, so performance is maintained.
613 if (phy->smart_speed == e1000_smart_speed_on) {
614 ret_val = phy->ops.read_reg(hw,
615 IGP01E1000_PHY_PORT_CONFIG, &data);
619 data |= IGP01E1000_PSCFR_SMART_SPEED;
620 ret_val = phy->ops.write_reg(hw,
621 IGP01E1000_PHY_PORT_CONFIG, data);
624 } else if (phy->smart_speed == e1000_smart_speed_off) {
625 ret_val = phy->ops.read_reg(hw,
626 IGP01E1000_PHY_PORT_CONFIG, &data);
630 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
631 ret_val = phy->ops.write_reg(hw,
632 IGP01E1000_PHY_PORT_CONFIG, data);
643 * igb_acquire_nvm_82575 - Request for access to EEPROM
644 * @hw: pointer to the HW structure
646 * Acquire the necessary semaphores for exclusive access to the EEPROM.
647 * Set the EEPROM access request bit and wait for EEPROM access grant bit.
648 * Return successful if access grant bit set, else clear the request for
649 * EEPROM access and return -E1000_ERR_NVM (-1).
651 static s32 igb_acquire_nvm_82575(struct e1000_hw *hw)
655 ret_val = igb_acquire_swfw_sync_82575(hw, E1000_SWFW_EEP_SM);
659 ret_val = igb_acquire_nvm(hw);
662 igb_release_swfw_sync_82575(hw, E1000_SWFW_EEP_SM);
669 * igb_release_nvm_82575 - Release exclusive access to EEPROM
670 * @hw: pointer to the HW structure
672 * Stop any current commands to the EEPROM and clear the EEPROM request bit,
673 * then release the semaphores acquired.
675 static void igb_release_nvm_82575(struct e1000_hw *hw)
678 igb_release_swfw_sync_82575(hw, E1000_SWFW_EEP_SM);
682 * igb_acquire_swfw_sync_82575 - Acquire SW/FW semaphore
683 * @hw: pointer to the HW structure
684 * @mask: specifies which semaphore to acquire
686 * Acquire the SW/FW semaphore to access the PHY or NVM. The mask
687 * will also specify which port we're acquiring the lock for.
689 static s32 igb_acquire_swfw_sync_82575(struct e1000_hw *hw, u16 mask)
693 u32 fwmask = mask << 16;
695 s32 i = 0, timeout = 200; /* FIXME: find real value to use here */
697 while (i < timeout) {
698 if (igb_get_hw_semaphore(hw)) {
699 ret_val = -E1000_ERR_SWFW_SYNC;
703 swfw_sync = rd32(E1000_SW_FW_SYNC);
704 if (!(swfw_sync & (fwmask | swmask)))
708 * Firmware currently using resource (fwmask)
709 * or other software thread using resource (swmask)
711 igb_put_hw_semaphore(hw);
717 hw_dbg("Driver can't access resource, SW_FW_SYNC timeout.\n");
718 ret_val = -E1000_ERR_SWFW_SYNC;
723 wr32(E1000_SW_FW_SYNC, swfw_sync);
725 igb_put_hw_semaphore(hw);
732 * igb_release_swfw_sync_82575 - Release SW/FW semaphore
733 * @hw: pointer to the HW structure
734 * @mask: specifies which semaphore to acquire
736 * Release the SW/FW semaphore used to access the PHY or NVM. The mask
737 * will also specify which port we're releasing the lock for.
739 static void igb_release_swfw_sync_82575(struct e1000_hw *hw, u16 mask)
743 while (igb_get_hw_semaphore(hw) != 0);
746 swfw_sync = rd32(E1000_SW_FW_SYNC);
748 wr32(E1000_SW_FW_SYNC, swfw_sync);
750 igb_put_hw_semaphore(hw);
754 * igb_get_cfg_done_82575 - Read config done bit
755 * @hw: pointer to the HW structure
757 * Read the management control register for the config done bit for
758 * completion status. NOTE: silicon which is EEPROM-less will fail trying
759 * to read the config done bit, so an error is *ONLY* logged and returns
760 * 0. If we were to return with error, EEPROM-less silicon
761 * would not be able to be reset or change link.
763 static s32 igb_get_cfg_done_82575(struct e1000_hw *hw)
765 s32 timeout = PHY_CFG_TIMEOUT;
767 u32 mask = E1000_NVM_CFG_DONE_PORT_0;
769 if (hw->bus.func == 1)
770 mask = E1000_NVM_CFG_DONE_PORT_1;
771 else if (hw->bus.func == E1000_FUNC_2)
772 mask = E1000_NVM_CFG_DONE_PORT_2;
773 else if (hw->bus.func == E1000_FUNC_3)
774 mask = E1000_NVM_CFG_DONE_PORT_3;
777 if (rd32(E1000_EEMNGCTL) & mask)
783 hw_dbg("MNG configuration cycle has not completed.\n");
785 /* If EEPROM is not marked present, init the PHY manually */
786 if (((rd32(E1000_EECD) & E1000_EECD_PRES) == 0) &&
787 (hw->phy.type == e1000_phy_igp_3))
788 igb_phy_init_script_igp3(hw);
794 * igb_check_for_link_82575 - Check for link
795 * @hw: pointer to the HW structure
797 * If sgmii is enabled, then use the pcs register to determine link, otherwise
798 * use the generic interface for determining link.
800 static s32 igb_check_for_link_82575(struct e1000_hw *hw)
805 if (hw->phy.media_type != e1000_media_type_copper) {
806 ret_val = igb_get_pcs_speed_and_duplex_82575(hw, &speed,
809 * Use this flag to determine if link needs to be checked or
810 * not. If we have link clear the flag so that we do not
811 * continue to check for link.
813 hw->mac.get_link_status = !hw->mac.serdes_has_link;
815 ret_val = igb_check_for_copper_link(hw);
822 * igb_power_up_serdes_link_82575 - Power up the serdes link after shutdown
823 * @hw: pointer to the HW structure
825 void igb_power_up_serdes_link_82575(struct e1000_hw *hw)
830 if ((hw->phy.media_type != e1000_media_type_internal_serdes) &&
831 !igb_sgmii_active_82575(hw))
834 /* Enable PCS to turn on link */
835 reg = rd32(E1000_PCS_CFG0);
836 reg |= E1000_PCS_CFG_PCS_EN;
837 wr32(E1000_PCS_CFG0, reg);
839 /* Power up the laser */
840 reg = rd32(E1000_CTRL_EXT);
841 reg &= ~E1000_CTRL_EXT_SDP3_DATA;
842 wr32(E1000_CTRL_EXT, reg);
844 /* flush the write to verify completion */
850 * igb_get_pcs_speed_and_duplex_82575 - Retrieve current speed/duplex
851 * @hw: pointer to the HW structure
852 * @speed: stores the current speed
853 * @duplex: stores the current duplex
855 * Using the physical coding sub-layer (PCS), retrieve the current speed and
856 * duplex, then store the values in the pointers provided.
858 static s32 igb_get_pcs_speed_and_duplex_82575(struct e1000_hw *hw, u16 *speed,
861 struct e1000_mac_info *mac = &hw->mac;
864 /* Set up defaults for the return values of this function */
865 mac->serdes_has_link = false;
870 * Read the PCS Status register for link state. For non-copper mode,
871 * the status register is not accurate. The PCS status register is
874 pcs = rd32(E1000_PCS_LSTAT);
877 * The link up bit determines when link is up on autoneg. The sync ok
878 * gets set once both sides sync up and agree upon link. Stable link
879 * can be determined by checking for both link up and link sync ok
881 if ((pcs & E1000_PCS_LSTS_LINK_OK) && (pcs & E1000_PCS_LSTS_SYNK_OK)) {
882 mac->serdes_has_link = true;
884 /* Detect and store PCS speed */
885 if (pcs & E1000_PCS_LSTS_SPEED_1000) {
887 } else if (pcs & E1000_PCS_LSTS_SPEED_100) {
893 /* Detect and store PCS duplex */
894 if (pcs & E1000_PCS_LSTS_DUPLEX_FULL) {
895 *duplex = FULL_DUPLEX;
897 *duplex = HALF_DUPLEX;
905 * igb_shutdown_serdes_link_82575 - Remove link during power down
906 * @hw: pointer to the HW structure
908 * In the case of fiber serdes, shut down optics and PCS on driver unload
909 * when management pass thru is not enabled.
911 void igb_shutdown_serdes_link_82575(struct e1000_hw *hw)
915 if (hw->phy.media_type != e1000_media_type_internal_serdes &&
916 igb_sgmii_active_82575(hw))
919 if (!igb_enable_mng_pass_thru(hw)) {
920 /* Disable PCS to turn off link */
921 reg = rd32(E1000_PCS_CFG0);
922 reg &= ~E1000_PCS_CFG_PCS_EN;
923 wr32(E1000_PCS_CFG0, reg);
925 /* shutdown the laser */
926 reg = rd32(E1000_CTRL_EXT);
927 reg |= E1000_CTRL_EXT_SDP3_DATA;
928 wr32(E1000_CTRL_EXT, reg);
930 /* flush the write to verify completion */
937 * igb_reset_hw_82575 - Reset hardware
938 * @hw: pointer to the HW structure
940 * This resets the hardware into a known state. This is a
941 * function pointer entry point called by the api module.
943 static s32 igb_reset_hw_82575(struct e1000_hw *hw)
949 * Prevent the PCI-E bus from sticking if there is no TLP connection
950 * on the last TLP read/write transaction when MAC is reset.
952 ret_val = igb_disable_pcie_master(hw);
954 hw_dbg("PCI-E Master disable polling has failed.\n");
956 /* set the completion timeout for interface */
957 ret_val = igb_set_pcie_completion_timeout(hw);
959 hw_dbg("PCI-E Set completion timeout has failed.\n");
962 hw_dbg("Masking off all interrupts\n");
963 wr32(E1000_IMC, 0xffffffff);
966 wr32(E1000_TCTL, E1000_TCTL_PSP);
971 ctrl = rd32(E1000_CTRL);
973 hw_dbg("Issuing a global reset to MAC\n");
974 wr32(E1000_CTRL, ctrl | E1000_CTRL_RST);
976 ret_val = igb_get_auto_rd_done(hw);
979 * When auto config read does not complete, do not
980 * return with an error. This can happen in situations
981 * where there is no eeprom and prevents getting link.
983 hw_dbg("Auto Read Done did not complete\n");
986 /* If EEPROM is not present, run manual init scripts */
987 if ((rd32(E1000_EECD) & E1000_EECD_PRES) == 0)
988 igb_reset_init_script_82575(hw);
990 /* Clear any pending interrupt events. */
991 wr32(E1000_IMC, 0xffffffff);
992 icr = rd32(E1000_ICR);
994 /* Install any alternate MAC address into RAR0 */
995 ret_val = igb_check_alt_mac_addr(hw);
1001 * igb_init_hw_82575 - Initialize hardware
1002 * @hw: pointer to the HW structure
1004 * This inits the hardware readying it for operation.
1006 static s32 igb_init_hw_82575(struct e1000_hw *hw)
1008 struct e1000_mac_info *mac = &hw->mac;
1010 u16 i, rar_count = mac->rar_entry_count;
1012 /* Initialize identification LED */
1013 ret_val = igb_id_led_init(hw);
1015 hw_dbg("Error initializing identification LED\n");
1016 /* This is not fatal and we should not stop init due to this */
1019 /* Disabling VLAN filtering */
1020 hw_dbg("Initializing the IEEE VLAN\n");
1023 /* Setup the receive address */
1024 igb_init_rx_addrs(hw, rar_count);
1026 /* Zero out the Multicast HASH table */
1027 hw_dbg("Zeroing the MTA\n");
1028 for (i = 0; i < mac->mta_reg_count; i++)
1029 array_wr32(E1000_MTA, i, 0);
1031 /* Zero out the Unicast HASH table */
1032 hw_dbg("Zeroing the UTA\n");
1033 for (i = 0; i < mac->uta_reg_count; i++)
1034 array_wr32(E1000_UTA, i, 0);
1036 /* Setup link and flow control */
1037 ret_val = igb_setup_link(hw);
1040 * Clear all of the statistics registers (clear on read). It is
1041 * important that we do this after we have tried to establish link
1042 * because the symbol error count will increment wildly if there
1045 igb_clear_hw_cntrs_82575(hw);
1051 * igb_setup_copper_link_82575 - Configure copper link settings
1052 * @hw: pointer to the HW structure
1054 * Configures the link for auto-neg or forced speed and duplex. Then we check
1055 * for link, once link is established calls to configure collision distance
1056 * and flow control are called.
1058 static s32 igb_setup_copper_link_82575(struct e1000_hw *hw)
1063 ctrl = rd32(E1000_CTRL);
1064 ctrl |= E1000_CTRL_SLU;
1065 ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
1066 wr32(E1000_CTRL, ctrl);
1068 ret_val = igb_setup_serdes_link_82575(hw);
1072 if (igb_sgmii_active_82575(hw) && !hw->phy.reset_disable) {
1073 /* allow time for SFP cage time to power up phy */
1076 ret_val = hw->phy.ops.reset(hw);
1078 hw_dbg("Error resetting the PHY.\n");
1082 switch (hw->phy.type) {
1084 if (hw->phy.id == I347AT4_E_PHY_ID ||
1085 hw->phy.id == M88E1112_E_PHY_ID)
1086 ret_val = igb_copper_link_setup_m88_gen2(hw);
1088 ret_val = igb_copper_link_setup_m88(hw);
1090 case e1000_phy_igp_3:
1091 ret_val = igb_copper_link_setup_igp(hw);
1093 case e1000_phy_82580:
1094 ret_val = igb_copper_link_setup_82580(hw);
1097 ret_val = -E1000_ERR_PHY;
1104 ret_val = igb_setup_copper_link(hw);
1110 * igb_setup_serdes_link_82575 - Setup link for serdes
1111 * @hw: pointer to the HW structure
1113 * Configure the physical coding sub-layer (PCS) link. The PCS link is
1114 * used on copper connections where the serialized gigabit media independent
1115 * interface (sgmii), or serdes fiber is being used. Configures the link
1116 * for auto-negotiation or forces speed/duplex.
1118 static s32 igb_setup_serdes_link_82575(struct e1000_hw *hw)
1120 u32 ctrl_ext, ctrl_reg, reg;
1123 if ((hw->phy.media_type != e1000_media_type_internal_serdes) &&
1124 !igb_sgmii_active_82575(hw))
1128 * On the 82575, SerDes loopback mode persists until it is
1129 * explicitly turned off or a power cycle is performed. A read to
1130 * the register does not indicate its status. Therefore, we ensure
1131 * loopback mode is disabled during initialization.
1133 wr32(E1000_SCTL, E1000_SCTL_DISABLE_SERDES_LOOPBACK);
1135 /* power on the sfp cage if present */
1136 ctrl_ext = rd32(E1000_CTRL_EXT);
1137 ctrl_ext &= ~E1000_CTRL_EXT_SDP3_DATA;
1138 wr32(E1000_CTRL_EXT, ctrl_ext);
1140 ctrl_reg = rd32(E1000_CTRL);
1141 ctrl_reg |= E1000_CTRL_SLU;
1143 if (hw->mac.type == e1000_82575 || hw->mac.type == e1000_82576) {
1144 /* set both sw defined pins */
1145 ctrl_reg |= E1000_CTRL_SWDPIN0 | E1000_CTRL_SWDPIN1;
1147 /* Set switch control to serdes energy detect */
1148 reg = rd32(E1000_CONNSW);
1149 reg |= E1000_CONNSW_ENRGSRC;
1150 wr32(E1000_CONNSW, reg);
1153 reg = rd32(E1000_PCS_LCTL);
1155 /* default pcs_autoneg to the same setting as mac autoneg */
1156 pcs_autoneg = hw->mac.autoneg;
1158 switch (ctrl_ext & E1000_CTRL_EXT_LINK_MODE_MASK) {
1159 case E1000_CTRL_EXT_LINK_MODE_SGMII:
1160 /* sgmii mode lets the phy handle forcing speed/duplex */
1162 /* autoneg time out should be disabled for SGMII mode */
1163 reg &= ~(E1000_PCS_LCTL_AN_TIMEOUT);
1165 case E1000_CTRL_EXT_LINK_MODE_1000BASE_KX:
1166 /* disable PCS autoneg and support parallel detect only */
1167 pcs_autoneg = false;
1170 * non-SGMII modes only supports a speed of 1000/Full for the
1171 * link so it is best to just force the MAC and let the pcs
1172 * link either autoneg or be forced to 1000/Full
1174 ctrl_reg |= E1000_CTRL_SPD_1000 | E1000_CTRL_FRCSPD |
1175 E1000_CTRL_FD | E1000_CTRL_FRCDPX;
1177 /* set speed of 1000/Full if speed/duplex is forced */
1178 reg |= E1000_PCS_LCTL_FSV_1000 | E1000_PCS_LCTL_FDV_FULL;
1182 wr32(E1000_CTRL, ctrl_reg);
1185 * New SerDes mode allows for forcing speed or autonegotiating speed
1186 * at 1gb. Autoneg should be default set by most drivers. This is the
1187 * mode that will be compatible with older link partners and switches.
1188 * However, both are supported by the hardware and some drivers/tools.
1190 reg &= ~(E1000_PCS_LCTL_AN_ENABLE | E1000_PCS_LCTL_FLV_LINK_UP |
1191 E1000_PCS_LCTL_FSD | E1000_PCS_LCTL_FORCE_LINK);
1194 * We force flow control to prevent the CTRL register values from being
1195 * overwritten by the autonegotiated flow control values
1197 reg |= E1000_PCS_LCTL_FORCE_FCTRL;
1200 /* Set PCS register for autoneg */
1201 reg |= E1000_PCS_LCTL_AN_ENABLE | /* Enable Autoneg */
1202 E1000_PCS_LCTL_AN_RESTART; /* Restart autoneg */
1203 hw_dbg("Configuring Autoneg:PCS_LCTL=0x%08X\n", reg);
1205 /* Set PCS register for forced link */
1206 reg |= E1000_PCS_LCTL_FSD; /* Force Speed */
1208 hw_dbg("Configuring Forced Link:PCS_LCTL=0x%08X\n", reg);
1211 wr32(E1000_PCS_LCTL, reg);
1213 if (!igb_sgmii_active_82575(hw))
1214 igb_force_mac_fc(hw);
1220 * igb_sgmii_active_82575 - Return sgmii state
1221 * @hw: pointer to the HW structure
1223 * 82575 silicon has a serialized gigabit media independent interface (sgmii)
1224 * which can be enabled for use in the embedded applications. Simply
1225 * return the current state of the sgmii interface.
1227 static bool igb_sgmii_active_82575(struct e1000_hw *hw)
1229 struct e1000_dev_spec_82575 *dev_spec = &hw->dev_spec._82575;
1230 return dev_spec->sgmii_active;
1234 * igb_reset_init_script_82575 - Inits HW defaults after reset
1235 * @hw: pointer to the HW structure
1237 * Inits recommended HW defaults after a reset when there is no EEPROM
1238 * detected. This is only for the 82575.
1240 static s32 igb_reset_init_script_82575(struct e1000_hw *hw)
1242 if (hw->mac.type == e1000_82575) {
1243 hw_dbg("Running reset init script for 82575\n");
1244 /* SerDes configuration via SERDESCTRL */
1245 igb_write_8bit_ctrl_reg(hw, E1000_SCTL, 0x00, 0x0C);
1246 igb_write_8bit_ctrl_reg(hw, E1000_SCTL, 0x01, 0x78);
1247 igb_write_8bit_ctrl_reg(hw, E1000_SCTL, 0x1B, 0x23);
1248 igb_write_8bit_ctrl_reg(hw, E1000_SCTL, 0x23, 0x15);
1250 /* CCM configuration via CCMCTL register */
1251 igb_write_8bit_ctrl_reg(hw, E1000_CCMCTL, 0x14, 0x00);
1252 igb_write_8bit_ctrl_reg(hw, E1000_CCMCTL, 0x10, 0x00);
1254 /* PCIe lanes configuration */
1255 igb_write_8bit_ctrl_reg(hw, E1000_GIOCTL, 0x00, 0xEC);
1256 igb_write_8bit_ctrl_reg(hw, E1000_GIOCTL, 0x61, 0xDF);
1257 igb_write_8bit_ctrl_reg(hw, E1000_GIOCTL, 0x34, 0x05);
1258 igb_write_8bit_ctrl_reg(hw, E1000_GIOCTL, 0x2F, 0x81);
1260 /* PCIe PLL Configuration */
1261 igb_write_8bit_ctrl_reg(hw, E1000_SCCTL, 0x02, 0x47);
1262 igb_write_8bit_ctrl_reg(hw, E1000_SCCTL, 0x14, 0x00);
1263 igb_write_8bit_ctrl_reg(hw, E1000_SCCTL, 0x10, 0x00);
1270 * igb_read_mac_addr_82575 - Read device MAC address
1271 * @hw: pointer to the HW structure
1273 static s32 igb_read_mac_addr_82575(struct e1000_hw *hw)
1278 * If there's an alternate MAC address place it in RAR0
1279 * so that it will override the Si installed default perm
1282 ret_val = igb_check_alt_mac_addr(hw);
1286 ret_val = igb_read_mac_addr(hw);
1293 * igb_power_down_phy_copper_82575 - Remove link during PHY power down
1294 * @hw: pointer to the HW structure
1296 * In the case of a PHY power down to save power, or to turn off link during a
1297 * driver unload, or wake on lan is not enabled, remove the link.
1299 void igb_power_down_phy_copper_82575(struct e1000_hw *hw)
1301 /* If the management interface is not enabled, then power down */
1302 if (!(igb_enable_mng_pass_thru(hw) || igb_check_reset_block(hw)))
1303 igb_power_down_phy_copper(hw);
1307 * igb_clear_hw_cntrs_82575 - Clear device specific hardware counters
1308 * @hw: pointer to the HW structure
1310 * Clears the hardware counters by reading the counter registers.
1312 static void igb_clear_hw_cntrs_82575(struct e1000_hw *hw)
1314 igb_clear_hw_cntrs_base(hw);
1320 rd32(E1000_PRC1023);
1321 rd32(E1000_PRC1522);
1326 rd32(E1000_PTC1023);
1327 rd32(E1000_PTC1522);
1329 rd32(E1000_ALGNERRC);
1332 rd32(E1000_CEXTERR);
1343 rd32(E1000_ICRXPTC);
1344 rd32(E1000_ICRXATC);
1345 rd32(E1000_ICTXPTC);
1346 rd32(E1000_ICTXATC);
1347 rd32(E1000_ICTXQEC);
1348 rd32(E1000_ICTXQMTC);
1349 rd32(E1000_ICRXDMTC);
1356 rd32(E1000_HTCBDPC);
1361 rd32(E1000_LENERRS);
1363 /* This register should not be read in copper configurations */
1364 if (hw->phy.media_type == e1000_media_type_internal_serdes ||
1365 igb_sgmii_active_82575(hw))
1370 * igb_rx_fifo_flush_82575 - Clean rx fifo after RX enable
1371 * @hw: pointer to the HW structure
1373 * After rx enable if managability is enabled then there is likely some
1374 * bad data at the start of the fifo and possibly in the DMA fifo. This
1375 * function clears the fifos and flushes any packets that came in as rx was
1378 void igb_rx_fifo_flush_82575(struct e1000_hw *hw)
1380 u32 rctl, rlpml, rxdctl[4], rfctl, temp_rctl, rx_enabled;
1383 if (hw->mac.type != e1000_82575 ||
1384 !(rd32(E1000_MANC) & E1000_MANC_RCV_TCO_EN))
1387 /* Disable all RX queues */
1388 for (i = 0; i < 4; i++) {
1389 rxdctl[i] = rd32(E1000_RXDCTL(i));
1390 wr32(E1000_RXDCTL(i),
1391 rxdctl[i] & ~E1000_RXDCTL_QUEUE_ENABLE);
1393 /* Poll all queues to verify they have shut down */
1394 for (ms_wait = 0; ms_wait < 10; ms_wait++) {
1397 for (i = 0; i < 4; i++)
1398 rx_enabled |= rd32(E1000_RXDCTL(i));
1399 if (!(rx_enabled & E1000_RXDCTL_QUEUE_ENABLE))
1404 hw_dbg("Queue disable timed out after 10ms\n");
1406 /* Clear RLPML, RCTL.SBP, RFCTL.LEF, and set RCTL.LPE so that all
1407 * incoming packets are rejected. Set enable and wait 2ms so that
1408 * any packet that was coming in as RCTL.EN was set is flushed
1410 rfctl = rd32(E1000_RFCTL);
1411 wr32(E1000_RFCTL, rfctl & ~E1000_RFCTL_LEF);
1413 rlpml = rd32(E1000_RLPML);
1414 wr32(E1000_RLPML, 0);
1416 rctl = rd32(E1000_RCTL);
1417 temp_rctl = rctl & ~(E1000_RCTL_EN | E1000_RCTL_SBP);
1418 temp_rctl |= E1000_RCTL_LPE;
1420 wr32(E1000_RCTL, temp_rctl);
1421 wr32(E1000_RCTL, temp_rctl | E1000_RCTL_EN);
1425 /* Enable RX queues that were previously enabled and restore our
1428 for (i = 0; i < 4; i++)
1429 wr32(E1000_RXDCTL(i), rxdctl[i]);
1430 wr32(E1000_RCTL, rctl);
1433 wr32(E1000_RLPML, rlpml);
1434 wr32(E1000_RFCTL, rfctl);
1436 /* Flush receive errors generated by workaround */
1443 * igb_set_pcie_completion_timeout - set pci-e completion timeout
1444 * @hw: pointer to the HW structure
1446 * The defaults for 82575 and 82576 should be in the range of 50us to 50ms,
1447 * however the hardware default for these parts is 500us to 1ms which is less
1448 * than the 10ms recommended by the pci-e spec. To address this we need to
1449 * increase the value to either 10ms to 200ms for capability version 1 config,
1450 * or 16ms to 55ms for version 2.
1452 static s32 igb_set_pcie_completion_timeout(struct e1000_hw *hw)
1454 u32 gcr = rd32(E1000_GCR);
1458 /* only take action if timeout value is defaulted to 0 */
1459 if (gcr & E1000_GCR_CMPL_TMOUT_MASK)
1463 * if capababilities version is type 1 we can write the
1464 * timeout of 10ms to 200ms through the GCR register
1466 if (!(gcr & E1000_GCR_CAP_VER2)) {
1467 gcr |= E1000_GCR_CMPL_TMOUT_10ms;
1472 * for version 2 capabilities we need to write the config space
1473 * directly in order to set the completion timeout value for
1476 ret_val = igb_read_pcie_cap_reg(hw, PCIE_DEVICE_CONTROL2,
1481 pcie_devctl2 |= PCIE_DEVICE_CONTROL2_16ms;
1483 ret_val = igb_write_pcie_cap_reg(hw, PCIE_DEVICE_CONTROL2,
1486 /* disable completion timeout resend */
1487 gcr &= ~E1000_GCR_CMPL_TMOUT_RESEND;
1489 wr32(E1000_GCR, gcr);
1494 * igb_vmdq_set_anti_spoofing_pf - enable or disable anti-spoofing
1495 * @hw: pointer to the hardware struct
1496 * @enable: state to enter, either enabled or disabled
1497 * @pf: Physical Function pool - do not set anti-spoofing for the PF
1499 * enables/disables L2 switch anti-spoofing functionality.
1501 void igb_vmdq_set_anti_spoofing_pf(struct e1000_hw *hw, bool enable, int pf)
1505 switch (hw->mac.type) {
1508 dtxswc = rd32(E1000_DTXSWC);
1510 dtxswc |= (E1000_DTXSWC_MAC_SPOOF_MASK |
1511 E1000_DTXSWC_VLAN_SPOOF_MASK);
1512 /* The PF can spoof - it has to in order to
1513 * support emulation mode NICs */
1514 dtxswc ^= (1 << pf | 1 << (pf + MAX_NUM_VFS));
1516 dtxswc &= ~(E1000_DTXSWC_MAC_SPOOF_MASK |
1517 E1000_DTXSWC_VLAN_SPOOF_MASK);
1519 wr32(E1000_DTXSWC, dtxswc);
1527 * igb_vmdq_set_loopback_pf - enable or disable vmdq loopback
1528 * @hw: pointer to the hardware struct
1529 * @enable: state to enter, either enabled or disabled
1531 * enables/disables L2 switch loopback functionality.
1533 void igb_vmdq_set_loopback_pf(struct e1000_hw *hw, bool enable)
1535 u32 dtxswc = rd32(E1000_DTXSWC);
1538 dtxswc |= E1000_DTXSWC_VMDQ_LOOPBACK_EN;
1540 dtxswc &= ~E1000_DTXSWC_VMDQ_LOOPBACK_EN;
1542 wr32(E1000_DTXSWC, dtxswc);
1546 * igb_vmdq_set_replication_pf - enable or disable vmdq replication
1547 * @hw: pointer to the hardware struct
1548 * @enable: state to enter, either enabled or disabled
1550 * enables/disables replication of packets across multiple pools.
1552 void igb_vmdq_set_replication_pf(struct e1000_hw *hw, bool enable)
1554 u32 vt_ctl = rd32(E1000_VT_CTL);
1557 vt_ctl |= E1000_VT_CTL_VM_REPL_EN;
1559 vt_ctl &= ~E1000_VT_CTL_VM_REPL_EN;
1561 wr32(E1000_VT_CTL, vt_ctl);
1565 * igb_read_phy_reg_82580 - Read 82580 MDI control register
1566 * @hw: pointer to the HW structure
1567 * @offset: register offset to be read
1568 * @data: pointer to the read data
1570 * Reads the MDI control register in the PHY at offset and stores the
1571 * information read to data.
1573 static s32 igb_read_phy_reg_82580(struct e1000_hw *hw, u32 offset, u16 *data)
1578 ret_val = hw->phy.ops.acquire(hw);
1582 ret_val = igb_read_phy_reg_mdic(hw, offset, data);
1584 hw->phy.ops.release(hw);
1591 * igb_write_phy_reg_82580 - Write 82580 MDI control register
1592 * @hw: pointer to the HW structure
1593 * @offset: register offset to write to
1594 * @data: data to write to register at offset
1596 * Writes data to MDI control register in the PHY at offset.
1598 static s32 igb_write_phy_reg_82580(struct e1000_hw *hw, u32 offset, u16 data)
1603 ret_val = hw->phy.ops.acquire(hw);
1607 ret_val = igb_write_phy_reg_mdic(hw, offset, data);
1609 hw->phy.ops.release(hw);
1616 * igb_reset_mdicnfg_82580 - Reset MDICNFG destination and com_mdio bits
1617 * @hw: pointer to the HW structure
1619 * This resets the the MDICNFG.Destination and MDICNFG.Com_MDIO bits based on
1620 * the values found in the EEPROM. This addresses an issue in which these
1621 * bits are not restored from EEPROM after reset.
1623 static s32 igb_reset_mdicnfg_82580(struct e1000_hw *hw)
1629 if (hw->mac.type != e1000_82580)
1631 if (!igb_sgmii_active_82575(hw))
1634 ret_val = hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_A +
1635 NVM_82580_LAN_FUNC_OFFSET(hw->bus.func), 1,
1638 hw_dbg("NVM Read Error\n");
1642 mdicnfg = rd32(E1000_MDICNFG);
1643 if (nvm_data & NVM_WORD24_EXT_MDIO)
1644 mdicnfg |= E1000_MDICNFG_EXT_MDIO;
1645 if (nvm_data & NVM_WORD24_COM_MDIO)
1646 mdicnfg |= E1000_MDICNFG_COM_MDIO;
1647 wr32(E1000_MDICNFG, mdicnfg);
1653 * igb_reset_hw_82580 - Reset hardware
1654 * @hw: pointer to the HW structure
1656 * This resets function or entire device (all ports, etc.)
1659 static s32 igb_reset_hw_82580(struct e1000_hw *hw)
1662 /* BH SW mailbox bit in SW_FW_SYNC */
1663 u16 swmbsw_mask = E1000_SW_SYNCH_MB;
1665 bool global_device_reset = hw->dev_spec._82575.global_device_reset;
1668 hw->dev_spec._82575.global_device_reset = false;
1670 /* Get current control state. */
1671 ctrl = rd32(E1000_CTRL);
1674 * Prevent the PCI-E bus from sticking if there is no TLP connection
1675 * on the last TLP read/write transaction when MAC is reset.
1677 ret_val = igb_disable_pcie_master(hw);
1679 hw_dbg("PCI-E Master disable polling has failed.\n");
1681 hw_dbg("Masking off all interrupts\n");
1682 wr32(E1000_IMC, 0xffffffff);
1683 wr32(E1000_RCTL, 0);
1684 wr32(E1000_TCTL, E1000_TCTL_PSP);
1689 /* Determine whether or not a global dev reset is requested */
1690 if (global_device_reset &&
1691 igb_acquire_swfw_sync_82575(hw, swmbsw_mask))
1692 global_device_reset = false;
1694 if (global_device_reset &&
1695 !(rd32(E1000_STATUS) & E1000_STAT_DEV_RST_SET))
1696 ctrl |= E1000_CTRL_DEV_RST;
1698 ctrl |= E1000_CTRL_RST;
1700 wr32(E1000_CTRL, ctrl);
1702 /* Add delay to insure DEV_RST has time to complete */
1703 if (global_device_reset)
1706 ret_val = igb_get_auto_rd_done(hw);
1709 * When auto config read does not complete, do not
1710 * return with an error. This can happen in situations
1711 * where there is no eeprom and prevents getting link.
1713 hw_dbg("Auto Read Done did not complete\n");
1716 /* If EEPROM is not present, run manual init scripts */
1717 if ((rd32(E1000_EECD) & E1000_EECD_PRES) == 0)
1718 igb_reset_init_script_82575(hw);
1720 /* clear global device reset status bit */
1721 wr32(E1000_STATUS, E1000_STAT_DEV_RST_SET);
1723 /* Clear any pending interrupt events. */
1724 wr32(E1000_IMC, 0xffffffff);
1725 icr = rd32(E1000_ICR);
1727 ret_val = igb_reset_mdicnfg_82580(hw);
1729 hw_dbg("Could not reset MDICNFG based on EEPROM\n");
1731 /* Install any alternate MAC address into RAR0 */
1732 ret_val = igb_check_alt_mac_addr(hw);
1734 /* Release semaphore */
1735 if (global_device_reset)
1736 igb_release_swfw_sync_82575(hw, swmbsw_mask);
1742 * igb_rxpbs_adjust_82580 - adjust RXPBS value to reflect actual RX PBA size
1743 * @data: data received by reading RXPBS register
1745 * The 82580 uses a table based approach for packet buffer allocation sizes.
1746 * This function converts the retrieved value into the correct table value
1747 * 0x0 0x1 0x2 0x3 0x4 0x5 0x6 0x7
1748 * 0x0 36 72 144 1 2 4 8 16
1749 * 0x8 35 70 140 rsv rsv rsv rsv rsv
1751 u16 igb_rxpbs_adjust_82580(u32 data)
1755 if (data < E1000_82580_RXPBS_TABLE_SIZE)
1756 ret_val = e1000_82580_rxpbs_table[data];
1762 * igb_set_eee_i350 - Enable/disable EEE support
1763 * @hw: pointer to the HW structure
1765 * Enable/disable EEE based on setting in dev_spec structure.
1768 s32 igb_set_eee_i350(struct e1000_hw *hw)
1771 u32 ipcnfg, eeer, ctrl_ext;
1773 ctrl_ext = rd32(E1000_CTRL_EXT);
1774 if ((hw->mac.type != e1000_i350) ||
1775 (ctrl_ext & E1000_CTRL_EXT_LINK_MODE_MASK))
1777 ipcnfg = rd32(E1000_IPCNFG);
1778 eeer = rd32(E1000_EEER);
1780 /* enable or disable per user setting */
1781 if (!(hw->dev_spec._82575.eee_disable)) {
1782 ipcnfg |= (E1000_IPCNFG_EEE_1G_AN |
1783 E1000_IPCNFG_EEE_100M_AN);
1784 eeer |= (E1000_EEER_TX_LPI_EN |
1785 E1000_EEER_RX_LPI_EN |
1789 ipcnfg &= ~(E1000_IPCNFG_EEE_1G_AN |
1790 E1000_IPCNFG_EEE_100M_AN);
1791 eeer &= ~(E1000_EEER_TX_LPI_EN |
1792 E1000_EEER_RX_LPI_EN |
1795 wr32(E1000_IPCNFG, ipcnfg);
1796 wr32(E1000_EEER, eeer);
1801 static struct e1000_mac_operations e1000_mac_ops_82575 = {
1802 .init_hw = igb_init_hw_82575,
1803 .check_for_link = igb_check_for_link_82575,
1804 .rar_set = igb_rar_set,
1805 .read_mac_addr = igb_read_mac_addr_82575,
1806 .get_speed_and_duplex = igb_get_speed_and_duplex_copper,
1809 static struct e1000_phy_operations e1000_phy_ops_82575 = {
1810 .acquire = igb_acquire_phy_82575,
1811 .get_cfg_done = igb_get_cfg_done_82575,
1812 .release = igb_release_phy_82575,
1815 static struct e1000_nvm_operations e1000_nvm_ops_82575 = {
1816 .acquire = igb_acquire_nvm_82575,
1817 .read = igb_read_nvm_eerd,
1818 .release = igb_release_nvm_82575,
1819 .write = igb_write_nvm_spi,
1822 const struct e1000_info e1000_82575_info = {
1823 .get_invariants = igb_get_invariants_82575,
1824 .mac_ops = &e1000_mac_ops_82575,
1825 .phy_ops = &e1000_phy_ops_82575,
1826 .nvm_ops = &e1000_nvm_ops_82575,