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)
199 /* physical interface link setup */
200 mac->ops.setup_physical_interface =
201 (hw->phy.media_type == e1000_media_type_copper)
202 ? igb_setup_copper_link_82575
203 : igb_setup_serdes_link_82575;
205 /* NVM initialization */
206 eecd = rd32(E1000_EECD);
208 nvm->opcode_bits = 8;
210 switch (nvm->override) {
211 case e1000_nvm_override_spi_large:
213 nvm->address_bits = 16;
215 case e1000_nvm_override_spi_small:
217 nvm->address_bits = 8;
220 nvm->page_size = eecd & E1000_EECD_ADDR_BITS ? 32 : 8;
221 nvm->address_bits = eecd & E1000_EECD_ADDR_BITS ? 16 : 8;
225 nvm->type = e1000_nvm_eeprom_spi;
227 size = (u16)((eecd & E1000_EECD_SIZE_EX_MASK) >>
228 E1000_EECD_SIZE_EX_SHIFT);
231 * Added to a constant, "size" becomes the left-shift value
232 * for setting word_size.
234 size += NVM_WORD_SIZE_BASE_SHIFT;
236 /* EEPROM access above 16k is unsupported */
239 nvm->word_size = 1 << size;
241 /* if 82576 then initialize mailbox parameters */
242 if (mac->type == e1000_82576)
243 igb_init_mbx_params_pf(hw);
245 /* setup PHY parameters */
246 if (phy->media_type != e1000_media_type_copper) {
247 phy->type = e1000_phy_none;
251 phy->autoneg_mask = AUTONEG_ADVERTISE_SPEED_DEFAULT;
252 phy->reset_delay_us = 100;
254 ctrl_ext = rd32(E1000_CTRL_EXT);
256 /* PHY function pointers */
257 if (igb_sgmii_active_82575(hw)) {
258 phy->ops.reset = igb_phy_hw_reset_sgmii_82575;
259 ctrl_ext |= E1000_CTRL_I2C_ENA;
261 phy->ops.reset = igb_phy_hw_reset;
262 ctrl_ext &= ~E1000_CTRL_I2C_ENA;
265 wr32(E1000_CTRL_EXT, ctrl_ext);
266 igb_reset_mdicnfg_82580(hw);
268 if (igb_sgmii_active_82575(hw) && !igb_sgmii_uses_mdio_82575(hw)) {
269 phy->ops.read_reg = igb_read_phy_reg_sgmii_82575;
270 phy->ops.write_reg = igb_write_phy_reg_sgmii_82575;
271 } else if (hw->mac.type >= e1000_82580) {
272 phy->ops.read_reg = igb_read_phy_reg_82580;
273 phy->ops.write_reg = igb_write_phy_reg_82580;
275 phy->ops.read_reg = igb_read_phy_reg_igp;
276 phy->ops.write_reg = igb_write_phy_reg_igp;
280 hw->bus.func = (rd32(E1000_STATUS) & E1000_STATUS_FUNC_MASK) >>
281 E1000_STATUS_FUNC_SHIFT;
283 /* Set phy->phy_addr and phy->id. */
284 ret_val = igb_get_phy_id_82575(hw);
288 /* Verify phy id and set remaining function pointers */
290 case I347AT4_E_PHY_ID:
291 case M88E1112_E_PHY_ID:
292 case M88E1111_I_PHY_ID:
293 phy->type = e1000_phy_m88;
294 phy->ops.get_phy_info = igb_get_phy_info_m88;
296 if (phy->id == I347AT4_E_PHY_ID ||
297 phy->id == M88E1112_E_PHY_ID)
298 phy->ops.get_cable_length = igb_get_cable_length_m88_gen2;
300 phy->ops.get_cable_length = igb_get_cable_length_m88;
302 phy->ops.force_speed_duplex = igb_phy_force_speed_duplex_m88;
304 case IGP03E1000_E_PHY_ID:
305 phy->type = e1000_phy_igp_3;
306 phy->ops.get_phy_info = igb_get_phy_info_igp;
307 phy->ops.get_cable_length = igb_get_cable_length_igp_2;
308 phy->ops.force_speed_duplex = igb_phy_force_speed_duplex_igp;
309 phy->ops.set_d0_lplu_state = igb_set_d0_lplu_state_82575;
310 phy->ops.set_d3_lplu_state = igb_set_d3_lplu_state;
312 case I82580_I_PHY_ID:
314 phy->type = e1000_phy_82580;
315 phy->ops.force_speed_duplex = igb_phy_force_speed_duplex_82580;
316 phy->ops.get_cable_length = igb_get_cable_length_82580;
317 phy->ops.get_phy_info = igb_get_phy_info_82580;
320 return -E1000_ERR_PHY;
327 * igb_acquire_phy_82575 - Acquire rights to access PHY
328 * @hw: pointer to the HW structure
330 * Acquire access rights to the correct PHY. This is a
331 * function pointer entry point called by the api module.
333 static s32 igb_acquire_phy_82575(struct e1000_hw *hw)
335 u16 mask = E1000_SWFW_PHY0_SM;
337 if (hw->bus.func == E1000_FUNC_1)
338 mask = E1000_SWFW_PHY1_SM;
339 else if (hw->bus.func == E1000_FUNC_2)
340 mask = E1000_SWFW_PHY2_SM;
341 else if (hw->bus.func == E1000_FUNC_3)
342 mask = E1000_SWFW_PHY3_SM;
344 return igb_acquire_swfw_sync_82575(hw, mask);
348 * igb_release_phy_82575 - Release rights to access PHY
349 * @hw: pointer to the HW structure
351 * A wrapper to release access rights to the correct PHY. This is a
352 * function pointer entry point called by the api module.
354 static void igb_release_phy_82575(struct e1000_hw *hw)
356 u16 mask = E1000_SWFW_PHY0_SM;
358 if (hw->bus.func == E1000_FUNC_1)
359 mask = E1000_SWFW_PHY1_SM;
360 else if (hw->bus.func == E1000_FUNC_2)
361 mask = E1000_SWFW_PHY2_SM;
362 else if (hw->bus.func == E1000_FUNC_3)
363 mask = E1000_SWFW_PHY3_SM;
365 igb_release_swfw_sync_82575(hw, mask);
369 * igb_read_phy_reg_sgmii_82575 - Read PHY register using sgmii
370 * @hw: pointer to the HW structure
371 * @offset: register offset to be read
372 * @data: pointer to the read data
374 * Reads the PHY register at offset using the serial gigabit media independent
375 * interface and stores the retrieved information in data.
377 static s32 igb_read_phy_reg_sgmii_82575(struct e1000_hw *hw, u32 offset,
380 s32 ret_val = -E1000_ERR_PARAM;
382 if (offset > E1000_MAX_SGMII_PHY_REG_ADDR) {
383 hw_dbg("PHY Address %u is out of range\n", offset);
387 ret_val = hw->phy.ops.acquire(hw);
391 ret_val = igb_read_phy_reg_i2c(hw, offset, data);
393 hw->phy.ops.release(hw);
400 * igb_write_phy_reg_sgmii_82575 - Write PHY register using sgmii
401 * @hw: pointer to the HW structure
402 * @offset: register offset to write to
403 * @data: data to write at register offset
405 * Writes the data to PHY register at the offset using the serial gigabit
406 * media independent interface.
408 static s32 igb_write_phy_reg_sgmii_82575(struct e1000_hw *hw, u32 offset,
411 s32 ret_val = -E1000_ERR_PARAM;
414 if (offset > E1000_MAX_SGMII_PHY_REG_ADDR) {
415 hw_dbg("PHY Address %d is out of range\n", offset);
419 ret_val = hw->phy.ops.acquire(hw);
423 ret_val = igb_write_phy_reg_i2c(hw, offset, data);
425 hw->phy.ops.release(hw);
432 * igb_get_phy_id_82575 - Retrieve PHY addr and id
433 * @hw: pointer to the HW structure
435 * Retrieves the PHY address and ID for both PHY's which do and do not use
438 static s32 igb_get_phy_id_82575(struct e1000_hw *hw)
440 struct e1000_phy_info *phy = &hw->phy;
447 * For SGMII PHYs, we try the list of possible addresses until
448 * we find one that works. For non-SGMII PHYs
449 * (e.g. integrated copper PHYs), an address of 1 should
450 * work. The result of this function should mean phy->phy_addr
451 * and phy->id are set correctly.
453 if (!(igb_sgmii_active_82575(hw))) {
455 ret_val = igb_get_phy_id(hw);
459 if (igb_sgmii_uses_mdio_82575(hw)) {
460 switch (hw->mac.type) {
463 mdic = rd32(E1000_MDIC);
464 mdic &= E1000_MDIC_PHY_MASK;
465 phy->addr = mdic >> E1000_MDIC_PHY_SHIFT;
469 mdic = rd32(E1000_MDICNFG);
470 mdic &= E1000_MDICNFG_PHY_MASK;
471 phy->addr = mdic >> E1000_MDICNFG_PHY_SHIFT;
474 ret_val = -E1000_ERR_PHY;
478 ret_val = igb_get_phy_id(hw);
482 /* Power on sgmii phy if it is disabled */
483 ctrl_ext = rd32(E1000_CTRL_EXT);
484 wr32(E1000_CTRL_EXT, ctrl_ext & ~E1000_CTRL_EXT_SDP3_DATA);
489 * The address field in the I2CCMD register is 3 bits and 0 is invalid.
490 * Therefore, we need to test 1-7
492 for (phy->addr = 1; phy->addr < 8; phy->addr++) {
493 ret_val = igb_read_phy_reg_sgmii_82575(hw, PHY_ID1, &phy_id);
495 hw_dbg("Vendor ID 0x%08X read at address %u\n",
498 * At the time of this writing, The M88 part is
499 * the only supported SGMII PHY product.
501 if (phy_id == M88_VENDOR)
504 hw_dbg("PHY address %u was unreadable\n", phy->addr);
508 /* A valid PHY type couldn't be found. */
509 if (phy->addr == 8) {
511 ret_val = -E1000_ERR_PHY;
514 ret_val = igb_get_phy_id(hw);
517 /* restore previous sfp cage power state */
518 wr32(E1000_CTRL_EXT, ctrl_ext);
525 * igb_phy_hw_reset_sgmii_82575 - Performs a PHY reset
526 * @hw: pointer to the HW structure
528 * Resets the PHY using the serial gigabit media independent interface.
530 static s32 igb_phy_hw_reset_sgmii_82575(struct e1000_hw *hw)
535 * This isn't a true "hard" reset, but is the only reset
536 * available to us at this time.
539 hw_dbg("Soft resetting SGMII attached PHY...\n");
542 * SFP documentation requires the following to configure the SPF module
543 * to work on SGMII. No further documentation is given.
545 ret_val = hw->phy.ops.write_reg(hw, 0x1B, 0x8084);
549 ret_val = igb_phy_sw_reset(hw);
556 * igb_set_d0_lplu_state_82575 - Set Low Power Linkup D0 state
557 * @hw: pointer to the HW structure
558 * @active: true to enable LPLU, false to disable
560 * Sets the LPLU D0 state according to the active flag. When
561 * activating LPLU this function also disables smart speed
562 * and vice versa. LPLU will not be activated unless the
563 * device autonegotiation advertisement meets standards of
564 * either 10 or 10/100 or 10/100/1000 at all duplexes.
565 * This is a function pointer entry point only called by
566 * PHY setup routines.
568 static s32 igb_set_d0_lplu_state_82575(struct e1000_hw *hw, bool active)
570 struct e1000_phy_info *phy = &hw->phy;
574 ret_val = phy->ops.read_reg(hw, IGP02E1000_PHY_POWER_MGMT, &data);
579 data |= IGP02E1000_PM_D0_LPLU;
580 ret_val = phy->ops.write_reg(hw, IGP02E1000_PHY_POWER_MGMT,
585 /* When LPLU is enabled, we should disable SmartSpeed */
586 ret_val = phy->ops.read_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
588 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
589 ret_val = phy->ops.write_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
594 data &= ~IGP02E1000_PM_D0_LPLU;
595 ret_val = phy->ops.write_reg(hw, IGP02E1000_PHY_POWER_MGMT,
598 * LPLU and SmartSpeed are mutually exclusive. LPLU is used
599 * during Dx states where the power conservation is most
600 * important. During driver activity we should enable
601 * SmartSpeed, so performance is maintained.
603 if (phy->smart_speed == e1000_smart_speed_on) {
604 ret_val = phy->ops.read_reg(hw,
605 IGP01E1000_PHY_PORT_CONFIG, &data);
609 data |= IGP01E1000_PSCFR_SMART_SPEED;
610 ret_val = phy->ops.write_reg(hw,
611 IGP01E1000_PHY_PORT_CONFIG, data);
614 } else if (phy->smart_speed == e1000_smart_speed_off) {
615 ret_val = phy->ops.read_reg(hw,
616 IGP01E1000_PHY_PORT_CONFIG, &data);
620 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
621 ret_val = phy->ops.write_reg(hw,
622 IGP01E1000_PHY_PORT_CONFIG, data);
633 * igb_acquire_nvm_82575 - Request for access to EEPROM
634 * @hw: pointer to the HW structure
636 * Acquire the necessary semaphores for exclusive access to the EEPROM.
637 * Set the EEPROM access request bit and wait for EEPROM access grant bit.
638 * Return successful if access grant bit set, else clear the request for
639 * EEPROM access and return -E1000_ERR_NVM (-1).
641 static s32 igb_acquire_nvm_82575(struct e1000_hw *hw)
645 ret_val = igb_acquire_swfw_sync_82575(hw, E1000_SWFW_EEP_SM);
649 ret_val = igb_acquire_nvm(hw);
652 igb_release_swfw_sync_82575(hw, E1000_SWFW_EEP_SM);
659 * igb_release_nvm_82575 - Release exclusive access to EEPROM
660 * @hw: pointer to the HW structure
662 * Stop any current commands to the EEPROM and clear the EEPROM request bit,
663 * then release the semaphores acquired.
665 static void igb_release_nvm_82575(struct e1000_hw *hw)
668 igb_release_swfw_sync_82575(hw, E1000_SWFW_EEP_SM);
672 * igb_acquire_swfw_sync_82575 - Acquire SW/FW semaphore
673 * @hw: pointer to the HW structure
674 * @mask: specifies which semaphore to acquire
676 * Acquire the SW/FW semaphore to access the PHY or NVM. The mask
677 * will also specify which port we're acquiring the lock for.
679 static s32 igb_acquire_swfw_sync_82575(struct e1000_hw *hw, u16 mask)
683 u32 fwmask = mask << 16;
685 s32 i = 0, timeout = 200; /* FIXME: find real value to use here */
687 while (i < timeout) {
688 if (igb_get_hw_semaphore(hw)) {
689 ret_val = -E1000_ERR_SWFW_SYNC;
693 swfw_sync = rd32(E1000_SW_FW_SYNC);
694 if (!(swfw_sync & (fwmask | swmask)))
698 * Firmware currently using resource (fwmask)
699 * or other software thread using resource (swmask)
701 igb_put_hw_semaphore(hw);
707 hw_dbg("Driver can't access resource, SW_FW_SYNC timeout.\n");
708 ret_val = -E1000_ERR_SWFW_SYNC;
713 wr32(E1000_SW_FW_SYNC, swfw_sync);
715 igb_put_hw_semaphore(hw);
722 * igb_release_swfw_sync_82575 - Release SW/FW semaphore
723 * @hw: pointer to the HW structure
724 * @mask: specifies which semaphore to acquire
726 * Release the SW/FW semaphore used to access the PHY or NVM. The mask
727 * will also specify which port we're releasing the lock for.
729 static void igb_release_swfw_sync_82575(struct e1000_hw *hw, u16 mask)
733 while (igb_get_hw_semaphore(hw) != 0);
736 swfw_sync = rd32(E1000_SW_FW_SYNC);
738 wr32(E1000_SW_FW_SYNC, swfw_sync);
740 igb_put_hw_semaphore(hw);
744 * igb_get_cfg_done_82575 - Read config done bit
745 * @hw: pointer to the HW structure
747 * Read the management control register for the config done bit for
748 * completion status. NOTE: silicon which is EEPROM-less will fail trying
749 * to read the config done bit, so an error is *ONLY* logged and returns
750 * 0. If we were to return with error, EEPROM-less silicon
751 * would not be able to be reset or change link.
753 static s32 igb_get_cfg_done_82575(struct e1000_hw *hw)
755 s32 timeout = PHY_CFG_TIMEOUT;
757 u32 mask = E1000_NVM_CFG_DONE_PORT_0;
759 if (hw->bus.func == 1)
760 mask = E1000_NVM_CFG_DONE_PORT_1;
761 else if (hw->bus.func == E1000_FUNC_2)
762 mask = E1000_NVM_CFG_DONE_PORT_2;
763 else if (hw->bus.func == E1000_FUNC_3)
764 mask = E1000_NVM_CFG_DONE_PORT_3;
767 if (rd32(E1000_EEMNGCTL) & mask)
773 hw_dbg("MNG configuration cycle has not completed.\n");
775 /* If EEPROM is not marked present, init the PHY manually */
776 if (((rd32(E1000_EECD) & E1000_EECD_PRES) == 0) &&
777 (hw->phy.type == e1000_phy_igp_3))
778 igb_phy_init_script_igp3(hw);
784 * igb_check_for_link_82575 - Check for link
785 * @hw: pointer to the HW structure
787 * If sgmii is enabled, then use the pcs register to determine link, otherwise
788 * use the generic interface for determining link.
790 static s32 igb_check_for_link_82575(struct e1000_hw *hw)
795 if (hw->phy.media_type != e1000_media_type_copper) {
796 ret_val = igb_get_pcs_speed_and_duplex_82575(hw, &speed,
799 * Use this flag to determine if link needs to be checked or
800 * not. If we have link clear the flag so that we do not
801 * continue to check for link.
803 hw->mac.get_link_status = !hw->mac.serdes_has_link;
805 ret_val = igb_check_for_copper_link(hw);
812 * igb_power_up_serdes_link_82575 - Power up the serdes link after shutdown
813 * @hw: pointer to the HW structure
815 void igb_power_up_serdes_link_82575(struct e1000_hw *hw)
820 if ((hw->phy.media_type != e1000_media_type_internal_serdes) &&
821 !igb_sgmii_active_82575(hw))
824 /* Enable PCS to turn on link */
825 reg = rd32(E1000_PCS_CFG0);
826 reg |= E1000_PCS_CFG_PCS_EN;
827 wr32(E1000_PCS_CFG0, reg);
829 /* Power up the laser */
830 reg = rd32(E1000_CTRL_EXT);
831 reg &= ~E1000_CTRL_EXT_SDP3_DATA;
832 wr32(E1000_CTRL_EXT, reg);
834 /* flush the write to verify completion */
840 * igb_get_pcs_speed_and_duplex_82575 - Retrieve current speed/duplex
841 * @hw: pointer to the HW structure
842 * @speed: stores the current speed
843 * @duplex: stores the current duplex
845 * Using the physical coding sub-layer (PCS), retrieve the current speed and
846 * duplex, then store the values in the pointers provided.
848 static s32 igb_get_pcs_speed_and_duplex_82575(struct e1000_hw *hw, u16 *speed,
851 struct e1000_mac_info *mac = &hw->mac;
854 /* Set up defaults for the return values of this function */
855 mac->serdes_has_link = false;
860 * Read the PCS Status register for link state. For non-copper mode,
861 * the status register is not accurate. The PCS status register is
864 pcs = rd32(E1000_PCS_LSTAT);
867 * The link up bit determines when link is up on autoneg. The sync ok
868 * gets set once both sides sync up and agree upon link. Stable link
869 * can be determined by checking for both link up and link sync ok
871 if ((pcs & E1000_PCS_LSTS_LINK_OK) && (pcs & E1000_PCS_LSTS_SYNK_OK)) {
872 mac->serdes_has_link = true;
874 /* Detect and store PCS speed */
875 if (pcs & E1000_PCS_LSTS_SPEED_1000) {
877 } else if (pcs & E1000_PCS_LSTS_SPEED_100) {
883 /* Detect and store PCS duplex */
884 if (pcs & E1000_PCS_LSTS_DUPLEX_FULL) {
885 *duplex = FULL_DUPLEX;
887 *duplex = HALF_DUPLEX;
895 * igb_shutdown_serdes_link_82575 - Remove link during power down
896 * @hw: pointer to the HW structure
898 * In the case of fiber serdes, shut down optics and PCS on driver unload
899 * when management pass thru is not enabled.
901 void igb_shutdown_serdes_link_82575(struct e1000_hw *hw)
905 if (hw->phy.media_type != e1000_media_type_internal_serdes &&
906 igb_sgmii_active_82575(hw))
909 if (!igb_enable_mng_pass_thru(hw)) {
910 /* Disable PCS to turn off link */
911 reg = rd32(E1000_PCS_CFG0);
912 reg &= ~E1000_PCS_CFG_PCS_EN;
913 wr32(E1000_PCS_CFG0, reg);
915 /* shutdown the laser */
916 reg = rd32(E1000_CTRL_EXT);
917 reg |= E1000_CTRL_EXT_SDP3_DATA;
918 wr32(E1000_CTRL_EXT, reg);
920 /* flush the write to verify completion */
927 * igb_reset_hw_82575 - Reset hardware
928 * @hw: pointer to the HW structure
930 * This resets the hardware into a known state. This is a
931 * function pointer entry point called by the api module.
933 static s32 igb_reset_hw_82575(struct e1000_hw *hw)
939 * Prevent the PCI-E bus from sticking if there is no TLP connection
940 * on the last TLP read/write transaction when MAC is reset.
942 ret_val = igb_disable_pcie_master(hw);
944 hw_dbg("PCI-E Master disable polling has failed.\n");
946 /* set the completion timeout for interface */
947 ret_val = igb_set_pcie_completion_timeout(hw);
949 hw_dbg("PCI-E Set completion timeout has failed.\n");
952 hw_dbg("Masking off all interrupts\n");
953 wr32(E1000_IMC, 0xffffffff);
956 wr32(E1000_TCTL, E1000_TCTL_PSP);
961 ctrl = rd32(E1000_CTRL);
963 hw_dbg("Issuing a global reset to MAC\n");
964 wr32(E1000_CTRL, ctrl | E1000_CTRL_RST);
966 ret_val = igb_get_auto_rd_done(hw);
969 * When auto config read does not complete, do not
970 * return with an error. This can happen in situations
971 * where there is no eeprom and prevents getting link.
973 hw_dbg("Auto Read Done did not complete\n");
976 /* If EEPROM is not present, run manual init scripts */
977 if ((rd32(E1000_EECD) & E1000_EECD_PRES) == 0)
978 igb_reset_init_script_82575(hw);
980 /* Clear any pending interrupt events. */
981 wr32(E1000_IMC, 0xffffffff);
982 icr = rd32(E1000_ICR);
984 /* Install any alternate MAC address into RAR0 */
985 ret_val = igb_check_alt_mac_addr(hw);
991 * igb_init_hw_82575 - Initialize hardware
992 * @hw: pointer to the HW structure
994 * This inits the hardware readying it for operation.
996 static s32 igb_init_hw_82575(struct e1000_hw *hw)
998 struct e1000_mac_info *mac = &hw->mac;
1000 u16 i, rar_count = mac->rar_entry_count;
1002 /* Initialize identification LED */
1003 ret_val = igb_id_led_init(hw);
1005 hw_dbg("Error initializing identification LED\n");
1006 /* This is not fatal and we should not stop init due to this */
1009 /* Disabling VLAN filtering */
1010 hw_dbg("Initializing the IEEE VLAN\n");
1013 /* Setup the receive address */
1014 igb_init_rx_addrs(hw, rar_count);
1016 /* Zero out the Multicast HASH table */
1017 hw_dbg("Zeroing the MTA\n");
1018 for (i = 0; i < mac->mta_reg_count; i++)
1019 array_wr32(E1000_MTA, i, 0);
1021 /* Zero out the Unicast HASH table */
1022 hw_dbg("Zeroing the UTA\n");
1023 for (i = 0; i < mac->uta_reg_count; i++)
1024 array_wr32(E1000_UTA, i, 0);
1026 /* Setup link and flow control */
1027 ret_val = igb_setup_link(hw);
1030 * Clear all of the statistics registers (clear on read). It is
1031 * important that we do this after we have tried to establish link
1032 * because the symbol error count will increment wildly if there
1035 igb_clear_hw_cntrs_82575(hw);
1041 * igb_setup_copper_link_82575 - Configure copper link settings
1042 * @hw: pointer to the HW structure
1044 * Configures the link for auto-neg or forced speed and duplex. Then we check
1045 * for link, once link is established calls to configure collision distance
1046 * and flow control are called.
1048 static s32 igb_setup_copper_link_82575(struct e1000_hw *hw)
1053 ctrl = rd32(E1000_CTRL);
1054 ctrl |= E1000_CTRL_SLU;
1055 ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
1056 wr32(E1000_CTRL, ctrl);
1058 ret_val = igb_setup_serdes_link_82575(hw);
1062 if (igb_sgmii_active_82575(hw) && !hw->phy.reset_disable) {
1063 /* allow time for SFP cage time to power up phy */
1066 ret_val = hw->phy.ops.reset(hw);
1068 hw_dbg("Error resetting the PHY.\n");
1072 switch (hw->phy.type) {
1074 if (hw->phy.id == I347AT4_E_PHY_ID ||
1075 hw->phy.id == M88E1112_E_PHY_ID)
1076 ret_val = igb_copper_link_setup_m88_gen2(hw);
1078 ret_val = igb_copper_link_setup_m88(hw);
1080 case e1000_phy_igp_3:
1081 ret_val = igb_copper_link_setup_igp(hw);
1083 case e1000_phy_82580:
1084 ret_val = igb_copper_link_setup_82580(hw);
1087 ret_val = -E1000_ERR_PHY;
1094 ret_val = igb_setup_copper_link(hw);
1100 * igb_setup_serdes_link_82575 - Setup link for serdes
1101 * @hw: pointer to the HW structure
1103 * Configure the physical coding sub-layer (PCS) link. The PCS link is
1104 * used on copper connections where the serialized gigabit media independent
1105 * interface (sgmii), or serdes fiber is being used. Configures the link
1106 * for auto-negotiation or forces speed/duplex.
1108 static s32 igb_setup_serdes_link_82575(struct e1000_hw *hw)
1110 u32 ctrl_ext, ctrl_reg, reg;
1113 if ((hw->phy.media_type != e1000_media_type_internal_serdes) &&
1114 !igb_sgmii_active_82575(hw))
1118 * On the 82575, SerDes loopback mode persists until it is
1119 * explicitly turned off or a power cycle is performed. A read to
1120 * the register does not indicate its status. Therefore, we ensure
1121 * loopback mode is disabled during initialization.
1123 wr32(E1000_SCTL, E1000_SCTL_DISABLE_SERDES_LOOPBACK);
1125 /* power on the sfp cage if present */
1126 ctrl_ext = rd32(E1000_CTRL_EXT);
1127 ctrl_ext &= ~E1000_CTRL_EXT_SDP3_DATA;
1128 wr32(E1000_CTRL_EXT, ctrl_ext);
1130 ctrl_reg = rd32(E1000_CTRL);
1131 ctrl_reg |= E1000_CTRL_SLU;
1133 if (hw->mac.type == e1000_82575 || hw->mac.type == e1000_82576) {
1134 /* set both sw defined pins */
1135 ctrl_reg |= E1000_CTRL_SWDPIN0 | E1000_CTRL_SWDPIN1;
1137 /* Set switch control to serdes energy detect */
1138 reg = rd32(E1000_CONNSW);
1139 reg |= E1000_CONNSW_ENRGSRC;
1140 wr32(E1000_CONNSW, reg);
1143 reg = rd32(E1000_PCS_LCTL);
1145 /* default pcs_autoneg to the same setting as mac autoneg */
1146 pcs_autoneg = hw->mac.autoneg;
1148 switch (ctrl_ext & E1000_CTRL_EXT_LINK_MODE_MASK) {
1149 case E1000_CTRL_EXT_LINK_MODE_SGMII:
1150 /* sgmii mode lets the phy handle forcing speed/duplex */
1152 /* autoneg time out should be disabled for SGMII mode */
1153 reg &= ~(E1000_PCS_LCTL_AN_TIMEOUT);
1155 case E1000_CTRL_EXT_LINK_MODE_1000BASE_KX:
1156 /* disable PCS autoneg and support parallel detect only */
1157 pcs_autoneg = false;
1160 * non-SGMII modes only supports a speed of 1000/Full for the
1161 * link so it is best to just force the MAC and let the pcs
1162 * link either autoneg or be forced to 1000/Full
1164 ctrl_reg |= E1000_CTRL_SPD_1000 | E1000_CTRL_FRCSPD |
1165 E1000_CTRL_FD | E1000_CTRL_FRCDPX;
1167 /* set speed of 1000/Full if speed/duplex is forced */
1168 reg |= E1000_PCS_LCTL_FSV_1000 | E1000_PCS_LCTL_FDV_FULL;
1172 wr32(E1000_CTRL, ctrl_reg);
1175 * New SerDes mode allows for forcing speed or autonegotiating speed
1176 * at 1gb. Autoneg should be default set by most drivers. This is the
1177 * mode that will be compatible with older link partners and switches.
1178 * However, both are supported by the hardware and some drivers/tools.
1180 reg &= ~(E1000_PCS_LCTL_AN_ENABLE | E1000_PCS_LCTL_FLV_LINK_UP |
1181 E1000_PCS_LCTL_FSD | E1000_PCS_LCTL_FORCE_LINK);
1184 * We force flow control to prevent the CTRL register values from being
1185 * overwritten by the autonegotiated flow control values
1187 reg |= E1000_PCS_LCTL_FORCE_FCTRL;
1190 /* Set PCS register for autoneg */
1191 reg |= E1000_PCS_LCTL_AN_ENABLE | /* Enable Autoneg */
1192 E1000_PCS_LCTL_AN_RESTART; /* Restart autoneg */
1193 hw_dbg("Configuring Autoneg:PCS_LCTL=0x%08X\n", reg);
1195 /* Set PCS register for forced link */
1196 reg |= E1000_PCS_LCTL_FSD; /* Force Speed */
1198 hw_dbg("Configuring Forced Link:PCS_LCTL=0x%08X\n", reg);
1201 wr32(E1000_PCS_LCTL, reg);
1203 if (!igb_sgmii_active_82575(hw))
1204 igb_force_mac_fc(hw);
1210 * igb_sgmii_active_82575 - Return sgmii state
1211 * @hw: pointer to the HW structure
1213 * 82575 silicon has a serialized gigabit media independent interface (sgmii)
1214 * which can be enabled for use in the embedded applications. Simply
1215 * return the current state of the sgmii interface.
1217 static bool igb_sgmii_active_82575(struct e1000_hw *hw)
1219 struct e1000_dev_spec_82575 *dev_spec = &hw->dev_spec._82575;
1220 return dev_spec->sgmii_active;
1224 * igb_reset_init_script_82575 - Inits HW defaults after reset
1225 * @hw: pointer to the HW structure
1227 * Inits recommended HW defaults after a reset when there is no EEPROM
1228 * detected. This is only for the 82575.
1230 static s32 igb_reset_init_script_82575(struct e1000_hw *hw)
1232 if (hw->mac.type == e1000_82575) {
1233 hw_dbg("Running reset init script for 82575\n");
1234 /* SerDes configuration via SERDESCTRL */
1235 igb_write_8bit_ctrl_reg(hw, E1000_SCTL, 0x00, 0x0C);
1236 igb_write_8bit_ctrl_reg(hw, E1000_SCTL, 0x01, 0x78);
1237 igb_write_8bit_ctrl_reg(hw, E1000_SCTL, 0x1B, 0x23);
1238 igb_write_8bit_ctrl_reg(hw, E1000_SCTL, 0x23, 0x15);
1240 /* CCM configuration via CCMCTL register */
1241 igb_write_8bit_ctrl_reg(hw, E1000_CCMCTL, 0x14, 0x00);
1242 igb_write_8bit_ctrl_reg(hw, E1000_CCMCTL, 0x10, 0x00);
1244 /* PCIe lanes configuration */
1245 igb_write_8bit_ctrl_reg(hw, E1000_GIOCTL, 0x00, 0xEC);
1246 igb_write_8bit_ctrl_reg(hw, E1000_GIOCTL, 0x61, 0xDF);
1247 igb_write_8bit_ctrl_reg(hw, E1000_GIOCTL, 0x34, 0x05);
1248 igb_write_8bit_ctrl_reg(hw, E1000_GIOCTL, 0x2F, 0x81);
1250 /* PCIe PLL Configuration */
1251 igb_write_8bit_ctrl_reg(hw, E1000_SCCTL, 0x02, 0x47);
1252 igb_write_8bit_ctrl_reg(hw, E1000_SCCTL, 0x14, 0x00);
1253 igb_write_8bit_ctrl_reg(hw, E1000_SCCTL, 0x10, 0x00);
1260 * igb_read_mac_addr_82575 - Read device MAC address
1261 * @hw: pointer to the HW structure
1263 static s32 igb_read_mac_addr_82575(struct e1000_hw *hw)
1268 * If there's an alternate MAC address place it in RAR0
1269 * so that it will override the Si installed default perm
1272 ret_val = igb_check_alt_mac_addr(hw);
1276 ret_val = igb_read_mac_addr(hw);
1283 * igb_power_down_phy_copper_82575 - Remove link during PHY power down
1284 * @hw: pointer to the HW structure
1286 * In the case of a PHY power down to save power, or to turn off link during a
1287 * driver unload, or wake on lan is not enabled, remove the link.
1289 void igb_power_down_phy_copper_82575(struct e1000_hw *hw)
1291 /* If the management interface is not enabled, then power down */
1292 if (!(igb_enable_mng_pass_thru(hw) || igb_check_reset_block(hw)))
1293 igb_power_down_phy_copper(hw);
1297 * igb_clear_hw_cntrs_82575 - Clear device specific hardware counters
1298 * @hw: pointer to the HW structure
1300 * Clears the hardware counters by reading the counter registers.
1302 static void igb_clear_hw_cntrs_82575(struct e1000_hw *hw)
1304 igb_clear_hw_cntrs_base(hw);
1310 rd32(E1000_PRC1023);
1311 rd32(E1000_PRC1522);
1316 rd32(E1000_PTC1023);
1317 rd32(E1000_PTC1522);
1319 rd32(E1000_ALGNERRC);
1322 rd32(E1000_CEXTERR);
1333 rd32(E1000_ICRXPTC);
1334 rd32(E1000_ICRXATC);
1335 rd32(E1000_ICTXPTC);
1336 rd32(E1000_ICTXATC);
1337 rd32(E1000_ICTXQEC);
1338 rd32(E1000_ICTXQMTC);
1339 rd32(E1000_ICRXDMTC);
1346 rd32(E1000_HTCBDPC);
1351 rd32(E1000_LENERRS);
1353 /* This register should not be read in copper configurations */
1354 if (hw->phy.media_type == e1000_media_type_internal_serdes ||
1355 igb_sgmii_active_82575(hw))
1360 * igb_rx_fifo_flush_82575 - Clean rx fifo after RX enable
1361 * @hw: pointer to the HW structure
1363 * After rx enable if managability is enabled then there is likely some
1364 * bad data at the start of the fifo and possibly in the DMA fifo. This
1365 * function clears the fifos and flushes any packets that came in as rx was
1368 void igb_rx_fifo_flush_82575(struct e1000_hw *hw)
1370 u32 rctl, rlpml, rxdctl[4], rfctl, temp_rctl, rx_enabled;
1373 if (hw->mac.type != e1000_82575 ||
1374 !(rd32(E1000_MANC) & E1000_MANC_RCV_TCO_EN))
1377 /* Disable all RX queues */
1378 for (i = 0; i < 4; i++) {
1379 rxdctl[i] = rd32(E1000_RXDCTL(i));
1380 wr32(E1000_RXDCTL(i),
1381 rxdctl[i] & ~E1000_RXDCTL_QUEUE_ENABLE);
1383 /* Poll all queues to verify they have shut down */
1384 for (ms_wait = 0; ms_wait < 10; ms_wait++) {
1387 for (i = 0; i < 4; i++)
1388 rx_enabled |= rd32(E1000_RXDCTL(i));
1389 if (!(rx_enabled & E1000_RXDCTL_QUEUE_ENABLE))
1394 hw_dbg("Queue disable timed out after 10ms\n");
1396 /* Clear RLPML, RCTL.SBP, RFCTL.LEF, and set RCTL.LPE so that all
1397 * incoming packets are rejected. Set enable and wait 2ms so that
1398 * any packet that was coming in as RCTL.EN was set is flushed
1400 rfctl = rd32(E1000_RFCTL);
1401 wr32(E1000_RFCTL, rfctl & ~E1000_RFCTL_LEF);
1403 rlpml = rd32(E1000_RLPML);
1404 wr32(E1000_RLPML, 0);
1406 rctl = rd32(E1000_RCTL);
1407 temp_rctl = rctl & ~(E1000_RCTL_EN | E1000_RCTL_SBP);
1408 temp_rctl |= E1000_RCTL_LPE;
1410 wr32(E1000_RCTL, temp_rctl);
1411 wr32(E1000_RCTL, temp_rctl | E1000_RCTL_EN);
1415 /* Enable RX queues that were previously enabled and restore our
1418 for (i = 0; i < 4; i++)
1419 wr32(E1000_RXDCTL(i), rxdctl[i]);
1420 wr32(E1000_RCTL, rctl);
1423 wr32(E1000_RLPML, rlpml);
1424 wr32(E1000_RFCTL, rfctl);
1426 /* Flush receive errors generated by workaround */
1433 * igb_set_pcie_completion_timeout - set pci-e completion timeout
1434 * @hw: pointer to the HW structure
1436 * The defaults for 82575 and 82576 should be in the range of 50us to 50ms,
1437 * however the hardware default for these parts is 500us to 1ms which is less
1438 * than the 10ms recommended by the pci-e spec. To address this we need to
1439 * increase the value to either 10ms to 200ms for capability version 1 config,
1440 * or 16ms to 55ms for version 2.
1442 static s32 igb_set_pcie_completion_timeout(struct e1000_hw *hw)
1444 u32 gcr = rd32(E1000_GCR);
1448 /* only take action if timeout value is defaulted to 0 */
1449 if (gcr & E1000_GCR_CMPL_TMOUT_MASK)
1453 * if capababilities version is type 1 we can write the
1454 * timeout of 10ms to 200ms through the GCR register
1456 if (!(gcr & E1000_GCR_CAP_VER2)) {
1457 gcr |= E1000_GCR_CMPL_TMOUT_10ms;
1462 * for version 2 capabilities we need to write the config space
1463 * directly in order to set the completion timeout value for
1466 ret_val = igb_read_pcie_cap_reg(hw, PCIE_DEVICE_CONTROL2,
1471 pcie_devctl2 |= PCIE_DEVICE_CONTROL2_16ms;
1473 ret_val = igb_write_pcie_cap_reg(hw, PCIE_DEVICE_CONTROL2,
1476 /* disable completion timeout resend */
1477 gcr &= ~E1000_GCR_CMPL_TMOUT_RESEND;
1479 wr32(E1000_GCR, gcr);
1484 * igb_vmdq_set_anti_spoofing_pf - enable or disable anti-spoofing
1485 * @hw: pointer to the hardware struct
1486 * @enable: state to enter, either enabled or disabled
1487 * @pf: Physical Function pool - do not set anti-spoofing for the PF
1489 * enables/disables L2 switch anti-spoofing functionality.
1491 void igb_vmdq_set_anti_spoofing_pf(struct e1000_hw *hw, bool enable, int pf)
1495 switch (hw->mac.type) {
1498 dtxswc = rd32(E1000_DTXSWC);
1500 dtxswc |= (E1000_DTXSWC_MAC_SPOOF_MASK |
1501 E1000_DTXSWC_VLAN_SPOOF_MASK);
1502 /* The PF can spoof - it has to in order to
1503 * support emulation mode NICs */
1504 dtxswc ^= (1 << pf | 1 << (pf + MAX_NUM_VFS));
1506 dtxswc &= ~(E1000_DTXSWC_MAC_SPOOF_MASK |
1507 E1000_DTXSWC_VLAN_SPOOF_MASK);
1509 wr32(E1000_DTXSWC, dtxswc);
1517 * igb_vmdq_set_loopback_pf - enable or disable vmdq loopback
1518 * @hw: pointer to the hardware struct
1519 * @enable: state to enter, either enabled or disabled
1521 * enables/disables L2 switch loopback functionality.
1523 void igb_vmdq_set_loopback_pf(struct e1000_hw *hw, bool enable)
1525 u32 dtxswc = rd32(E1000_DTXSWC);
1528 dtxswc |= E1000_DTXSWC_VMDQ_LOOPBACK_EN;
1530 dtxswc &= ~E1000_DTXSWC_VMDQ_LOOPBACK_EN;
1532 wr32(E1000_DTXSWC, dtxswc);
1536 * igb_vmdq_set_replication_pf - enable or disable vmdq replication
1537 * @hw: pointer to the hardware struct
1538 * @enable: state to enter, either enabled or disabled
1540 * enables/disables replication of packets across multiple pools.
1542 void igb_vmdq_set_replication_pf(struct e1000_hw *hw, bool enable)
1544 u32 vt_ctl = rd32(E1000_VT_CTL);
1547 vt_ctl |= E1000_VT_CTL_VM_REPL_EN;
1549 vt_ctl &= ~E1000_VT_CTL_VM_REPL_EN;
1551 wr32(E1000_VT_CTL, vt_ctl);
1555 * igb_read_phy_reg_82580 - Read 82580 MDI control register
1556 * @hw: pointer to the HW structure
1557 * @offset: register offset to be read
1558 * @data: pointer to the read data
1560 * Reads the MDI control register in the PHY at offset and stores the
1561 * information read to data.
1563 static s32 igb_read_phy_reg_82580(struct e1000_hw *hw, u32 offset, u16 *data)
1568 ret_val = hw->phy.ops.acquire(hw);
1572 ret_val = igb_read_phy_reg_mdic(hw, offset, data);
1574 hw->phy.ops.release(hw);
1581 * igb_write_phy_reg_82580 - Write 82580 MDI control register
1582 * @hw: pointer to the HW structure
1583 * @offset: register offset to write to
1584 * @data: data to write to register at offset
1586 * Writes data to MDI control register in the PHY at offset.
1588 static s32 igb_write_phy_reg_82580(struct e1000_hw *hw, u32 offset, u16 data)
1593 ret_val = hw->phy.ops.acquire(hw);
1597 ret_val = igb_write_phy_reg_mdic(hw, offset, data);
1599 hw->phy.ops.release(hw);
1606 * igb_reset_mdicnfg_82580 - Reset MDICNFG destination and com_mdio bits
1607 * @hw: pointer to the HW structure
1609 * This resets the the MDICNFG.Destination and MDICNFG.Com_MDIO bits based on
1610 * the values found in the EEPROM. This addresses an issue in which these
1611 * bits are not restored from EEPROM after reset.
1613 static s32 igb_reset_mdicnfg_82580(struct e1000_hw *hw)
1619 if (hw->mac.type != e1000_82580)
1621 if (!igb_sgmii_active_82575(hw))
1624 ret_val = hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_A +
1625 NVM_82580_LAN_FUNC_OFFSET(hw->bus.func), 1,
1628 hw_dbg("NVM Read Error\n");
1632 mdicnfg = rd32(E1000_MDICNFG);
1633 if (nvm_data & NVM_WORD24_EXT_MDIO)
1634 mdicnfg |= E1000_MDICNFG_EXT_MDIO;
1635 if (nvm_data & NVM_WORD24_COM_MDIO)
1636 mdicnfg |= E1000_MDICNFG_COM_MDIO;
1637 wr32(E1000_MDICNFG, mdicnfg);
1643 * igb_reset_hw_82580 - Reset hardware
1644 * @hw: pointer to the HW structure
1646 * This resets function or entire device (all ports, etc.)
1649 static s32 igb_reset_hw_82580(struct e1000_hw *hw)
1652 /* BH SW mailbox bit in SW_FW_SYNC */
1653 u16 swmbsw_mask = E1000_SW_SYNCH_MB;
1655 bool global_device_reset = hw->dev_spec._82575.global_device_reset;
1658 hw->dev_spec._82575.global_device_reset = false;
1660 /* Get current control state. */
1661 ctrl = rd32(E1000_CTRL);
1664 * Prevent the PCI-E bus from sticking if there is no TLP connection
1665 * on the last TLP read/write transaction when MAC is reset.
1667 ret_val = igb_disable_pcie_master(hw);
1669 hw_dbg("PCI-E Master disable polling has failed.\n");
1671 hw_dbg("Masking off all interrupts\n");
1672 wr32(E1000_IMC, 0xffffffff);
1673 wr32(E1000_RCTL, 0);
1674 wr32(E1000_TCTL, E1000_TCTL_PSP);
1679 /* Determine whether or not a global dev reset is requested */
1680 if (global_device_reset &&
1681 igb_acquire_swfw_sync_82575(hw, swmbsw_mask))
1682 global_device_reset = false;
1684 if (global_device_reset &&
1685 !(rd32(E1000_STATUS) & E1000_STAT_DEV_RST_SET))
1686 ctrl |= E1000_CTRL_DEV_RST;
1688 ctrl |= E1000_CTRL_RST;
1690 wr32(E1000_CTRL, ctrl);
1692 /* Add delay to insure DEV_RST has time to complete */
1693 if (global_device_reset)
1696 ret_val = igb_get_auto_rd_done(hw);
1699 * When auto config read does not complete, do not
1700 * return with an error. This can happen in situations
1701 * where there is no eeprom and prevents getting link.
1703 hw_dbg("Auto Read Done did not complete\n");
1706 /* If EEPROM is not present, run manual init scripts */
1707 if ((rd32(E1000_EECD) & E1000_EECD_PRES) == 0)
1708 igb_reset_init_script_82575(hw);
1710 /* clear global device reset status bit */
1711 wr32(E1000_STATUS, E1000_STAT_DEV_RST_SET);
1713 /* Clear any pending interrupt events. */
1714 wr32(E1000_IMC, 0xffffffff);
1715 icr = rd32(E1000_ICR);
1717 ret_val = igb_reset_mdicnfg_82580(hw);
1719 hw_dbg("Could not reset MDICNFG based on EEPROM\n");
1721 /* Install any alternate MAC address into RAR0 */
1722 ret_val = igb_check_alt_mac_addr(hw);
1724 /* Release semaphore */
1725 if (global_device_reset)
1726 igb_release_swfw_sync_82575(hw, swmbsw_mask);
1732 * igb_rxpbs_adjust_82580 - adjust RXPBS value to reflect actual RX PBA size
1733 * @data: data received by reading RXPBS register
1735 * The 82580 uses a table based approach for packet buffer allocation sizes.
1736 * This function converts the retrieved value into the correct table value
1737 * 0x0 0x1 0x2 0x3 0x4 0x5 0x6 0x7
1738 * 0x0 36 72 144 1 2 4 8 16
1739 * 0x8 35 70 140 rsv rsv rsv rsv rsv
1741 u16 igb_rxpbs_adjust_82580(u32 data)
1745 if (data < E1000_82580_RXPBS_TABLE_SIZE)
1746 ret_val = e1000_82580_rxpbs_table[data];
1751 static struct e1000_mac_operations e1000_mac_ops_82575 = {
1752 .init_hw = igb_init_hw_82575,
1753 .check_for_link = igb_check_for_link_82575,
1754 .rar_set = igb_rar_set,
1755 .read_mac_addr = igb_read_mac_addr_82575,
1756 .get_speed_and_duplex = igb_get_speed_and_duplex_copper,
1759 static struct e1000_phy_operations e1000_phy_ops_82575 = {
1760 .acquire = igb_acquire_phy_82575,
1761 .get_cfg_done = igb_get_cfg_done_82575,
1762 .release = igb_release_phy_82575,
1765 static struct e1000_nvm_operations e1000_nvm_ops_82575 = {
1766 .acquire = igb_acquire_nvm_82575,
1767 .read = igb_read_nvm_eerd,
1768 .release = igb_release_nvm_82575,
1769 .write = igb_write_nvm_spi,
1772 const struct e1000_info e1000_82575_info = {
1773 .get_invariants = igb_get_invariants_82575,
1774 .mac_ops = &e1000_mac_ops_82575,
1775 .phy_ops = &e1000_phy_ops_82575,
1776 .nvm_ops = &e1000_nvm_ops_82575,