1 /*******************************************************************************
3 Intel PRO/1000 Linux driver
4 Copyright(c) 1999 - 2006 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
30 * Shared functions for accessing and configuring the MAC
35 static s32 e1000_check_downshift(struct e1000_hw *hw);
36 static s32 e1000_check_polarity(struct e1000_hw *hw,
37 e1000_rev_polarity *polarity);
38 static void e1000_clear_hw_cntrs(struct e1000_hw *hw);
39 static void e1000_clear_vfta(struct e1000_hw *hw);
40 static s32 e1000_config_dsp_after_link_change(struct e1000_hw *hw,
42 static s32 e1000_config_fc_after_link_up(struct e1000_hw *hw);
43 static s32 e1000_detect_gig_phy(struct e1000_hw *hw);
44 static s32 e1000_get_auto_rd_done(struct e1000_hw *hw);
45 static s32 e1000_get_cable_length(struct e1000_hw *hw, u16 *min_length,
47 static s32 e1000_get_phy_cfg_done(struct e1000_hw *hw);
48 static s32 e1000_id_led_init(struct e1000_hw *hw);
49 static void e1000_init_rx_addrs(struct e1000_hw *hw);
50 static s32 e1000_phy_igp_get_info(struct e1000_hw *hw,
51 struct e1000_phy_info *phy_info);
52 static s32 e1000_phy_m88_get_info(struct e1000_hw *hw,
53 struct e1000_phy_info *phy_info);
54 static s32 e1000_set_d3_lplu_state(struct e1000_hw *hw, bool active);
55 static s32 e1000_wait_autoneg(struct e1000_hw *hw);
56 static void e1000_write_reg_io(struct e1000_hw *hw, u32 offset, u32 value);
57 static s32 e1000_set_phy_type(struct e1000_hw *hw);
58 static void e1000_phy_init_script(struct e1000_hw *hw);
59 static s32 e1000_setup_copper_link(struct e1000_hw *hw);
60 static s32 e1000_setup_fiber_serdes_link(struct e1000_hw *hw);
61 static s32 e1000_adjust_serdes_amplitude(struct e1000_hw *hw);
62 static s32 e1000_phy_force_speed_duplex(struct e1000_hw *hw);
63 static s32 e1000_config_mac_to_phy(struct e1000_hw *hw);
64 static void e1000_raise_mdi_clk(struct e1000_hw *hw, u32 *ctrl);
65 static void e1000_lower_mdi_clk(struct e1000_hw *hw, u32 *ctrl);
66 static void e1000_shift_out_mdi_bits(struct e1000_hw *hw, u32 data, u16 count);
67 static u16 e1000_shift_in_mdi_bits(struct e1000_hw *hw);
68 static s32 e1000_phy_reset_dsp(struct e1000_hw *hw);
69 static s32 e1000_write_eeprom_spi(struct e1000_hw *hw, u16 offset,
70 u16 words, u16 *data);
71 static s32 e1000_write_eeprom_microwire(struct e1000_hw *hw, u16 offset,
72 u16 words, u16 *data);
73 static s32 e1000_spi_eeprom_ready(struct e1000_hw *hw);
74 static void e1000_raise_ee_clk(struct e1000_hw *hw, u32 *eecd);
75 static void e1000_lower_ee_clk(struct e1000_hw *hw, u32 *eecd);
76 static void e1000_shift_out_ee_bits(struct e1000_hw *hw, u16 data, u16 count);
77 static s32 e1000_write_phy_reg_ex(struct e1000_hw *hw, u32 reg_addr,
79 static s32 e1000_read_phy_reg_ex(struct e1000_hw *hw, u32 reg_addr,
81 static u16 e1000_shift_in_ee_bits(struct e1000_hw *hw, u16 count);
82 static s32 e1000_acquire_eeprom(struct e1000_hw *hw);
83 static void e1000_release_eeprom(struct e1000_hw *hw);
84 static void e1000_standby_eeprom(struct e1000_hw *hw);
85 static s32 e1000_set_vco_speed(struct e1000_hw *hw);
86 static s32 e1000_polarity_reversal_workaround(struct e1000_hw *hw);
87 static s32 e1000_set_phy_mode(struct e1000_hw *hw);
88 static s32 e1000_do_read_eeprom(struct e1000_hw *hw, u16 offset, u16 words,
90 static s32 e1000_do_write_eeprom(struct e1000_hw *hw, u16 offset, u16 words,
93 /* IGP cable length table */
95 u16 e1000_igp_cable_length_table[IGP01E1000_AGC_LENGTH_TABLE_SIZE] = {
96 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
97 5, 10, 10, 10, 10, 10, 10, 10, 20, 20, 20, 20, 20, 25, 25, 25,
98 25, 25, 25, 25, 30, 30, 30, 30, 40, 40, 40, 40, 40, 40, 40, 40,
99 40, 50, 50, 50, 50, 50, 50, 50, 60, 60, 60, 60, 60, 60, 60, 60,
100 60, 70, 70, 70, 70, 70, 70, 80, 80, 80, 80, 80, 80, 90, 90, 90,
101 90, 90, 90, 90, 90, 90, 100, 100, 100, 100, 100, 100, 100, 100, 100,
103 100, 100, 100, 100, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110,
105 110, 110, 110, 110, 110, 110, 120, 120, 120, 120, 120, 120, 120, 120,
109 static DEFINE_SPINLOCK(e1000_eeprom_lock);
110 static DEFINE_SPINLOCK(e1000_phy_lock);
113 * e1000_set_phy_type - Set the phy type member in the hw struct.
114 * @hw: Struct containing variables accessed by shared code
116 static s32 e1000_set_phy_type(struct e1000_hw *hw)
118 if (hw->mac_type == e1000_undefined)
119 return -E1000_ERR_PHY_TYPE;
121 switch (hw->phy_id) {
122 case M88E1000_E_PHY_ID:
123 case M88E1000_I_PHY_ID:
124 case M88E1011_I_PHY_ID:
125 case M88E1111_I_PHY_ID:
126 case M88E1118_E_PHY_ID:
127 hw->phy_type = e1000_phy_m88;
129 case IGP01E1000_I_PHY_ID:
130 if (hw->mac_type == e1000_82541 ||
131 hw->mac_type == e1000_82541_rev_2 ||
132 hw->mac_type == e1000_82547 ||
133 hw->mac_type == e1000_82547_rev_2)
134 hw->phy_type = e1000_phy_igp;
136 case RTL8211B_PHY_ID:
137 hw->phy_type = e1000_phy_8211;
139 case RTL8201N_PHY_ID:
140 hw->phy_type = e1000_phy_8201;
143 /* Should never have loaded on this device */
144 hw->phy_type = e1000_phy_undefined;
145 return -E1000_ERR_PHY_TYPE;
148 return E1000_SUCCESS;
152 * e1000_phy_init_script - IGP phy init script - initializes the GbE PHY
153 * @hw: Struct containing variables accessed by shared code
155 static void e1000_phy_init_script(struct e1000_hw *hw)
160 if (hw->phy_init_script) {
163 /* Save off the current value of register 0x2F5B to be restored
164 * at the end of this routine.
166 ret_val = e1000_read_phy_reg(hw, 0x2F5B, &phy_saved_data);
168 /* Disabled the PHY transmitter */
169 e1000_write_phy_reg(hw, 0x2F5B, 0x0003);
172 e1000_write_phy_reg(hw, 0x0000, 0x0140);
175 switch (hw->mac_type) {
178 e1000_write_phy_reg(hw, 0x1F95, 0x0001);
179 e1000_write_phy_reg(hw, 0x1F71, 0xBD21);
180 e1000_write_phy_reg(hw, 0x1F79, 0x0018);
181 e1000_write_phy_reg(hw, 0x1F30, 0x1600);
182 e1000_write_phy_reg(hw, 0x1F31, 0x0014);
183 e1000_write_phy_reg(hw, 0x1F32, 0x161C);
184 e1000_write_phy_reg(hw, 0x1F94, 0x0003);
185 e1000_write_phy_reg(hw, 0x1F96, 0x003F);
186 e1000_write_phy_reg(hw, 0x2010, 0x0008);
189 case e1000_82541_rev_2:
190 case e1000_82547_rev_2:
191 e1000_write_phy_reg(hw, 0x1F73, 0x0099);
197 e1000_write_phy_reg(hw, 0x0000, 0x3300);
200 /* Now enable the transmitter */
201 e1000_write_phy_reg(hw, 0x2F5B, phy_saved_data);
203 if (hw->mac_type == e1000_82547) {
204 u16 fused, fine, coarse;
206 /* Move to analog registers page */
207 e1000_read_phy_reg(hw,
208 IGP01E1000_ANALOG_SPARE_FUSE_STATUS,
211 if (!(fused & IGP01E1000_ANALOG_SPARE_FUSE_ENABLED)) {
212 e1000_read_phy_reg(hw,
213 IGP01E1000_ANALOG_FUSE_STATUS,
216 fine = fused & IGP01E1000_ANALOG_FUSE_FINE_MASK;
218 fused & IGP01E1000_ANALOG_FUSE_COARSE_MASK;
221 IGP01E1000_ANALOG_FUSE_COARSE_THRESH) {
223 IGP01E1000_ANALOG_FUSE_COARSE_10;
224 fine -= IGP01E1000_ANALOG_FUSE_FINE_1;
226 IGP01E1000_ANALOG_FUSE_COARSE_THRESH)
227 fine -= IGP01E1000_ANALOG_FUSE_FINE_10;
230 (fused & IGP01E1000_ANALOG_FUSE_POLY_MASK) |
231 (fine & IGP01E1000_ANALOG_FUSE_FINE_MASK) |
233 IGP01E1000_ANALOG_FUSE_COARSE_MASK);
235 e1000_write_phy_reg(hw,
236 IGP01E1000_ANALOG_FUSE_CONTROL,
238 e1000_write_phy_reg(hw,
239 IGP01E1000_ANALOG_FUSE_BYPASS,
240 IGP01E1000_ANALOG_FUSE_ENABLE_SW_CONTROL);
247 * e1000_set_mac_type - Set the mac type member in the hw struct.
248 * @hw: Struct containing variables accessed by shared code
250 s32 e1000_set_mac_type(struct e1000_hw *hw)
252 switch (hw->device_id) {
253 case E1000_DEV_ID_82542:
254 switch (hw->revision_id) {
255 case E1000_82542_2_0_REV_ID:
256 hw->mac_type = e1000_82542_rev2_0;
258 case E1000_82542_2_1_REV_ID:
259 hw->mac_type = e1000_82542_rev2_1;
262 /* Invalid 82542 revision ID */
263 return -E1000_ERR_MAC_TYPE;
266 case E1000_DEV_ID_82543GC_FIBER:
267 case E1000_DEV_ID_82543GC_COPPER:
268 hw->mac_type = e1000_82543;
270 case E1000_DEV_ID_82544EI_COPPER:
271 case E1000_DEV_ID_82544EI_FIBER:
272 case E1000_DEV_ID_82544GC_COPPER:
273 case E1000_DEV_ID_82544GC_LOM:
274 hw->mac_type = e1000_82544;
276 case E1000_DEV_ID_82540EM:
277 case E1000_DEV_ID_82540EM_LOM:
278 case E1000_DEV_ID_82540EP:
279 case E1000_DEV_ID_82540EP_LOM:
280 case E1000_DEV_ID_82540EP_LP:
281 hw->mac_type = e1000_82540;
283 case E1000_DEV_ID_82545EM_COPPER:
284 case E1000_DEV_ID_82545EM_FIBER:
285 hw->mac_type = e1000_82545;
287 case E1000_DEV_ID_82545GM_COPPER:
288 case E1000_DEV_ID_82545GM_FIBER:
289 case E1000_DEV_ID_82545GM_SERDES:
290 hw->mac_type = e1000_82545_rev_3;
292 case E1000_DEV_ID_82546EB_COPPER:
293 case E1000_DEV_ID_82546EB_FIBER:
294 case E1000_DEV_ID_82546EB_QUAD_COPPER:
295 hw->mac_type = e1000_82546;
297 case E1000_DEV_ID_82546GB_COPPER:
298 case E1000_DEV_ID_82546GB_FIBER:
299 case E1000_DEV_ID_82546GB_SERDES:
300 case E1000_DEV_ID_82546GB_PCIE:
301 case E1000_DEV_ID_82546GB_QUAD_COPPER:
302 case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3:
303 hw->mac_type = e1000_82546_rev_3;
305 case E1000_DEV_ID_82541EI:
306 case E1000_DEV_ID_82541EI_MOBILE:
307 case E1000_DEV_ID_82541ER_LOM:
308 hw->mac_type = e1000_82541;
310 case E1000_DEV_ID_82541ER:
311 case E1000_DEV_ID_82541GI:
312 case E1000_DEV_ID_82541GI_LF:
313 case E1000_DEV_ID_82541GI_MOBILE:
314 hw->mac_type = e1000_82541_rev_2;
316 case E1000_DEV_ID_82547EI:
317 case E1000_DEV_ID_82547EI_MOBILE:
318 hw->mac_type = e1000_82547;
320 case E1000_DEV_ID_82547GI:
321 hw->mac_type = e1000_82547_rev_2;
323 case E1000_DEV_ID_INTEL_CE4100_GBE:
324 hw->mac_type = e1000_ce4100;
327 /* Should never have loaded on this device */
328 return -E1000_ERR_MAC_TYPE;
331 switch (hw->mac_type) {
334 case e1000_82541_rev_2:
335 case e1000_82547_rev_2:
336 hw->asf_firmware_present = true;
342 /* The 82543 chip does not count tx_carrier_errors properly in
345 if (hw->mac_type == e1000_82543)
346 hw->bad_tx_carr_stats_fd = true;
348 if (hw->mac_type > e1000_82544)
349 hw->has_smbus = true;
351 return E1000_SUCCESS;
355 * e1000_set_media_type - Set media type and TBI compatibility.
356 * @hw: Struct containing variables accessed by shared code
358 void e1000_set_media_type(struct e1000_hw *hw)
362 if (hw->mac_type != e1000_82543) {
363 /* tbi_compatibility is only valid on 82543 */
364 hw->tbi_compatibility_en = false;
367 switch (hw->device_id) {
368 case E1000_DEV_ID_82545GM_SERDES:
369 case E1000_DEV_ID_82546GB_SERDES:
370 hw->media_type = e1000_media_type_internal_serdes;
373 switch (hw->mac_type) {
374 case e1000_82542_rev2_0:
375 case e1000_82542_rev2_1:
376 hw->media_type = e1000_media_type_fiber;
379 hw->media_type = e1000_media_type_copper;
382 status = er32(STATUS);
383 if (status & E1000_STATUS_TBIMODE) {
384 hw->media_type = e1000_media_type_fiber;
385 /* tbi_compatibility not valid on fiber */
386 hw->tbi_compatibility_en = false;
388 hw->media_type = e1000_media_type_copper;
396 * e1000_reset_hw - reset the hardware completely
397 * @hw: Struct containing variables accessed by shared code
399 * Reset the transmit and receive units; mask and clear all interrupts.
401 s32 e1000_reset_hw(struct e1000_hw *hw)
410 /* For 82542 (rev 2.0), disable MWI before issuing a device reset */
411 if (hw->mac_type == e1000_82542_rev2_0) {
412 e_dbg("Disabling MWI on 82542 rev 2.0\n");
413 e1000_pci_clear_mwi(hw);
416 /* Clear interrupt mask to stop board from generating interrupts */
417 e_dbg("Masking off all interrupts\n");
418 ew32(IMC, 0xffffffff);
420 /* Disable the Transmit and Receive units. Then delay to allow
421 * any pending transactions to complete before we hit the MAC with
425 ew32(TCTL, E1000_TCTL_PSP);
428 /* The tbi_compatibility_on Flag must be cleared when Rctl is cleared. */
429 hw->tbi_compatibility_on = false;
431 /* Delay to allow any outstanding PCI transactions to complete before
432 * resetting the device
438 /* Must reset the PHY before resetting the MAC */
439 if ((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_82547)) {
440 ew32(CTRL, (ctrl | E1000_CTRL_PHY_RST));
445 /* Issue a global reset to the MAC. This will reset the chip's
446 * transmit, receive, DMA, and link units. It will not effect
447 * the current PCI configuration. The global reset bit is self-
448 * clearing, and should clear within a microsecond.
450 e_dbg("Issuing a global reset to MAC\n");
452 switch (hw->mac_type) {
458 case e1000_82541_rev_2:
459 /* These controllers can't ack the 64-bit write when issuing the
460 * reset, so use IO-mapping as a workaround to issue the reset
462 E1000_WRITE_REG_IO(hw, CTRL, (ctrl | E1000_CTRL_RST));
464 case e1000_82545_rev_3:
465 case e1000_82546_rev_3:
466 /* Reset is performed on a shadow of the control register */
467 ew32(CTRL_DUP, (ctrl | E1000_CTRL_RST));
471 ew32(CTRL, (ctrl | E1000_CTRL_RST));
475 /* After MAC reset, force reload of EEPROM to restore power-on settings
476 * to device. Later controllers reload the EEPROM automatically, so
477 * just wait for reload to complete.
479 switch (hw->mac_type) {
480 case e1000_82542_rev2_0:
481 case e1000_82542_rev2_1:
484 /* Wait for reset to complete */
486 ctrl_ext = er32(CTRL_EXT);
487 ctrl_ext |= E1000_CTRL_EXT_EE_RST;
488 ew32(CTRL_EXT, ctrl_ext);
490 /* Wait for EEPROM reload */
494 case e1000_82541_rev_2:
496 case e1000_82547_rev_2:
497 /* Wait for EEPROM reload */
501 /* Auto read done will delay 5ms or poll based on mac type */
502 ret_val = e1000_get_auto_rd_done(hw);
508 /* Disable HW ARPs on ASF enabled adapters */
509 if (hw->mac_type >= e1000_82540) {
511 manc &= ~(E1000_MANC_ARP_EN);
515 if ((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_82547)) {
516 e1000_phy_init_script(hw);
518 /* Configure activity LED after PHY reset */
519 led_ctrl = er32(LEDCTL);
520 led_ctrl &= IGP_ACTIVITY_LED_MASK;
521 led_ctrl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE);
522 ew32(LEDCTL, led_ctrl);
525 /* Clear interrupt mask to stop board from generating interrupts */
526 e_dbg("Masking off all interrupts\n");
527 ew32(IMC, 0xffffffff);
529 /* Clear any pending interrupt events. */
532 /* If MWI was previously enabled, reenable it. */
533 if (hw->mac_type == e1000_82542_rev2_0) {
534 if (hw->pci_cmd_word & PCI_COMMAND_INVALIDATE)
535 e1000_pci_set_mwi(hw);
538 return E1000_SUCCESS;
542 * e1000_init_hw - Performs basic configuration of the adapter.
543 * @hw: Struct containing variables accessed by shared code
545 * Assumes that the controller has previously been reset and is in a
546 * post-reset uninitialized state. Initializes the receive address registers,
547 * multicast table, and VLAN filter table. Calls routines to setup link
548 * configuration and flow control settings. Clears all on-chip counters. Leaves
549 * the transmit and receive units disabled and uninitialized.
551 s32 e1000_init_hw(struct e1000_hw *hw)
559 /* Initialize Identification LED */
560 ret_val = e1000_id_led_init(hw);
562 e_dbg("Error Initializing Identification LED\n");
566 /* Set the media type and TBI compatibility */
567 e1000_set_media_type(hw);
569 /* Disabling VLAN filtering. */
570 e_dbg("Initializing the IEEE VLAN\n");
571 if (hw->mac_type < e1000_82545_rev_3)
573 e1000_clear_vfta(hw);
575 /* For 82542 (rev 2.0), disable MWI and put the receiver into reset */
576 if (hw->mac_type == e1000_82542_rev2_0) {
577 e_dbg("Disabling MWI on 82542 rev 2.0\n");
578 e1000_pci_clear_mwi(hw);
579 ew32(RCTL, E1000_RCTL_RST);
584 /* Setup the receive address. This involves initializing all of the
585 * Receive Address Registers (RARs 0 - 15).
587 e1000_init_rx_addrs(hw);
589 /* For 82542 (rev 2.0), take the receiver out of reset and enable MWI */
590 if (hw->mac_type == e1000_82542_rev2_0) {
594 if (hw->pci_cmd_word & PCI_COMMAND_INVALIDATE)
595 e1000_pci_set_mwi(hw);
598 /* Zero out the Multicast HASH table */
599 e_dbg("Zeroing the MTA\n");
600 mta_size = E1000_MC_TBL_SIZE;
601 for (i = 0; i < mta_size; i++) {
602 E1000_WRITE_REG_ARRAY(hw, MTA, i, 0);
603 /* use write flush to prevent Memory Write Block (MWB) from
604 * occurring when accessing our register space
609 /* Set the PCI priority bit correctly in the CTRL register. This
610 * determines if the adapter gives priority to receives, or if it
611 * gives equal priority to transmits and receives. Valid only on
612 * 82542 and 82543 silicon.
614 if (hw->dma_fairness && hw->mac_type <= e1000_82543) {
616 ew32(CTRL, ctrl | E1000_CTRL_PRIOR);
619 switch (hw->mac_type) {
620 case e1000_82545_rev_3:
621 case e1000_82546_rev_3:
624 /* Workaround for PCI-X problem when BIOS sets MMRBC
627 if (hw->bus_type == e1000_bus_type_pcix
628 && e1000_pcix_get_mmrbc(hw) > 2048)
629 e1000_pcix_set_mmrbc(hw, 2048);
633 /* Call a subroutine to configure the link and setup flow control. */
634 ret_val = e1000_setup_link(hw);
636 /* Set the transmit descriptor write-back policy */
637 if (hw->mac_type > e1000_82544) {
640 (ctrl & ~E1000_TXDCTL_WTHRESH) |
641 E1000_TXDCTL_FULL_TX_DESC_WB;
645 /* Clear all of the statistics registers (clear on read). It is
646 * important that we do this after we have tried to establish link
647 * because the symbol error count will increment wildly if there
650 e1000_clear_hw_cntrs(hw);
652 if (hw->device_id == E1000_DEV_ID_82546GB_QUAD_COPPER ||
653 hw->device_id == E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3) {
654 ctrl_ext = er32(CTRL_EXT);
655 /* Relaxed ordering must be disabled to avoid a parity
656 * error crash in a PCI slot.
658 ctrl_ext |= E1000_CTRL_EXT_RO_DIS;
659 ew32(CTRL_EXT, ctrl_ext);
666 * e1000_adjust_serdes_amplitude - Adjust SERDES output amplitude based on EEPROM setting.
667 * @hw: Struct containing variables accessed by shared code.
669 static s32 e1000_adjust_serdes_amplitude(struct e1000_hw *hw)
674 if (hw->media_type != e1000_media_type_internal_serdes)
675 return E1000_SUCCESS;
677 switch (hw->mac_type) {
678 case e1000_82545_rev_3:
679 case e1000_82546_rev_3:
682 return E1000_SUCCESS;
685 ret_val = e1000_read_eeprom(hw, EEPROM_SERDES_AMPLITUDE, 1,
691 if (eeprom_data != EEPROM_RESERVED_WORD) {
692 /* Adjust SERDES output amplitude only. */
693 eeprom_data &= EEPROM_SERDES_AMPLITUDE_MASK;
695 e1000_write_phy_reg(hw, M88E1000_PHY_EXT_CTRL, eeprom_data);
700 return E1000_SUCCESS;
704 * e1000_setup_link - Configures flow control and link settings.
705 * @hw: Struct containing variables accessed by shared code
707 * Determines which flow control settings to use. Calls the appropriate media-
708 * specific link configuration function. Configures the flow control settings.
709 * Assuming the adapter has a valid link partner, a valid link should be
710 * established. Assumes the hardware has previously been reset and the
711 * transmitter and receiver are not enabled.
713 s32 e1000_setup_link(struct e1000_hw *hw)
719 /* Read and store word 0x0F of the EEPROM. This word contains bits
720 * that determine the hardware's default PAUSE (flow control) mode,
721 * a bit that determines whether the HW defaults to enabling or
722 * disabling auto-negotiation, and the direction of the
723 * SW defined pins. If there is no SW over-ride of the flow
724 * control setting, then the variable hw->fc will
725 * be initialized based on a value in the EEPROM.
727 if (hw->fc == E1000_FC_DEFAULT) {
728 ret_val = e1000_read_eeprom(hw, EEPROM_INIT_CONTROL2_REG,
731 e_dbg("EEPROM Read Error\n");
732 return -E1000_ERR_EEPROM;
734 if ((eeprom_data & EEPROM_WORD0F_PAUSE_MASK) == 0)
735 hw->fc = E1000_FC_NONE;
736 else if ((eeprom_data & EEPROM_WORD0F_PAUSE_MASK) ==
737 EEPROM_WORD0F_ASM_DIR)
738 hw->fc = E1000_FC_TX_PAUSE;
740 hw->fc = E1000_FC_FULL;
743 /* We want to save off the original Flow Control configuration just
744 * in case we get disconnected and then reconnected into a different
745 * hub or switch with different Flow Control capabilities.
747 if (hw->mac_type == e1000_82542_rev2_0)
748 hw->fc &= (~E1000_FC_TX_PAUSE);
750 if ((hw->mac_type < e1000_82543) && (hw->report_tx_early == 1))
751 hw->fc &= (~E1000_FC_RX_PAUSE);
753 hw->original_fc = hw->fc;
755 e_dbg("After fix-ups FlowControl is now = %x\n", hw->fc);
757 /* Take the 4 bits from EEPROM word 0x0F that determine the initial
758 * polarity value for the SW controlled pins, and setup the
759 * Extended Device Control reg with that info.
760 * This is needed because one of the SW controlled pins is used for
761 * signal detection. So this should be done before e1000_setup_pcs_link()
762 * or e1000_phy_setup() is called.
764 if (hw->mac_type == e1000_82543) {
765 ret_val = e1000_read_eeprom(hw, EEPROM_INIT_CONTROL2_REG,
768 e_dbg("EEPROM Read Error\n");
769 return -E1000_ERR_EEPROM;
771 ctrl_ext = ((eeprom_data & EEPROM_WORD0F_SWPDIO_EXT) <<
773 ew32(CTRL_EXT, ctrl_ext);
776 /* Call the necessary subroutine to configure the link. */
777 ret_val = (hw->media_type == e1000_media_type_copper) ?
778 e1000_setup_copper_link(hw) : e1000_setup_fiber_serdes_link(hw);
780 /* Initialize the flow control address, type, and PAUSE timer
781 * registers to their default values. This is done even if flow
782 * control is disabled, because it does not hurt anything to
783 * initialize these registers.
785 e_dbg("Initializing the Flow Control address, type and timer regs\n");
787 ew32(FCT, FLOW_CONTROL_TYPE);
788 ew32(FCAH, FLOW_CONTROL_ADDRESS_HIGH);
789 ew32(FCAL, FLOW_CONTROL_ADDRESS_LOW);
791 ew32(FCTTV, hw->fc_pause_time);
793 /* Set the flow control receive threshold registers. Normally,
794 * these registers will be set to a default threshold that may be
795 * adjusted later by the driver's runtime code. However, if the
796 * ability to transmit pause frames in not enabled, then these
797 * registers will be set to 0.
799 if (!(hw->fc & E1000_FC_TX_PAUSE)) {
803 /* We need to set up the Receive Threshold high and low water
804 * marks as well as (optionally) enabling the transmission of
807 if (hw->fc_send_xon) {
808 ew32(FCRTL, (hw->fc_low_water | E1000_FCRTL_XONE));
809 ew32(FCRTH, hw->fc_high_water);
811 ew32(FCRTL, hw->fc_low_water);
812 ew32(FCRTH, hw->fc_high_water);
819 * e1000_setup_fiber_serdes_link - prepare fiber or serdes link
820 * @hw: Struct containing variables accessed by shared code
822 * Manipulates Physical Coding Sublayer functions in order to configure
823 * link. Assumes the hardware has been previously reset and the transmitter
824 * and receiver are not enabled.
826 static s32 e1000_setup_fiber_serdes_link(struct e1000_hw *hw)
835 /* On adapters with a MAC newer than 82544, SWDP 1 will be
836 * set when the optics detect a signal. On older adapters, it will be
837 * cleared when there is a signal. This applies to fiber media only.
838 * If we're on serdes media, adjust the output amplitude to value
842 if (hw->media_type == e1000_media_type_fiber)
843 signal = (hw->mac_type > e1000_82544) ? E1000_CTRL_SWDPIN1 : 0;
845 ret_val = e1000_adjust_serdes_amplitude(hw);
849 /* Take the link out of reset */
850 ctrl &= ~(E1000_CTRL_LRST);
852 /* Adjust VCO speed to improve BER performance */
853 ret_val = e1000_set_vco_speed(hw);
857 e1000_config_collision_dist(hw);
859 /* Check for a software override of the flow control settings, and setup
860 * the device accordingly. If auto-negotiation is enabled, then
861 * software will have to set the "PAUSE" bits to the correct value in
862 * the Tranmsit Config Word Register (TXCW) and re-start
863 * auto-negotiation. However, if auto-negotiation is disabled, then
864 * software will have to manually configure the two flow control enable
865 * bits in the CTRL register.
867 * The possible values of the "fc" parameter are:
868 * 0: Flow control is completely disabled
869 * 1: Rx flow control is enabled (we can receive pause frames, but
870 * not send pause frames).
871 * 2: Tx flow control is enabled (we can send pause frames but we do
872 * not support receiving pause frames).
873 * 3: Both Rx and TX flow control (symmetric) are enabled.
877 /* Flow ctrl is completely disabled by a software over-ride */
878 txcw = (E1000_TXCW_ANE | E1000_TXCW_FD);
880 case E1000_FC_RX_PAUSE:
881 /* Rx Flow control is enabled and Tx Flow control is disabled by
882 * a software over-ride. Since there really isn't a way to
883 * advertise that we are capable of Rx Pause ONLY, we will
884 * advertise that we support both symmetric and asymmetric Rx
885 * PAUSE. Later, we will disable the adapter's ability to send
888 txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_PAUSE_MASK);
890 case E1000_FC_TX_PAUSE:
891 /* Tx Flow control is enabled, and Rx Flow control is disabled,
892 * by a software over-ride.
894 txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_ASM_DIR);
897 /* Flow control (both Rx and Tx) is enabled by a software
900 txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_PAUSE_MASK);
903 e_dbg("Flow control param set incorrectly\n");
904 return -E1000_ERR_CONFIG;
908 /* Since auto-negotiation is enabled, take the link out of reset (the
909 * link will be in reset, because we previously reset the chip). This
910 * will restart auto-negotiation. If auto-negotiation is successful
911 * then the link-up status bit will be set and the flow control enable
912 * bits (RFCE and TFCE) will be set according to their negotiated value.
914 e_dbg("Auto-negotiation enabled\n");
923 /* If we have a signal (the cable is plugged in) then poll for a
924 * "Link-Up" indication in the Device Status Register. Time-out if a
925 * link isn't seen in 500 milliseconds seconds (Auto-negotiation should
926 * complete in less than 500 milliseconds even if the other end is doing
927 * it in SW). For internal serdes, we just assume a signal is present,
930 if (hw->media_type == e1000_media_type_internal_serdes ||
931 (er32(CTRL) & E1000_CTRL_SWDPIN1) == signal) {
932 e_dbg("Looking for Link\n");
933 for (i = 0; i < (LINK_UP_TIMEOUT / 10); i++) {
935 status = er32(STATUS);
936 if (status & E1000_STATUS_LU)
939 if (i == (LINK_UP_TIMEOUT / 10)) {
940 e_dbg("Never got a valid link from auto-neg!!!\n");
941 hw->autoneg_failed = 1;
942 /* AutoNeg failed to achieve a link, so we'll call
943 * e1000_check_for_link. This routine will force the
944 * link up if we detect a signal. This will allow us to
945 * communicate with non-autonegotiating link partners.
947 ret_val = e1000_check_for_link(hw);
949 e_dbg("Error while checking for link\n");
952 hw->autoneg_failed = 0;
954 hw->autoneg_failed = 0;
955 e_dbg("Valid Link Found\n");
958 e_dbg("No Signal Detected\n");
960 return E1000_SUCCESS;
964 * e1000_copper_link_rtl_setup - Copper link setup for e1000_phy_rtl series.
965 * @hw: Struct containing variables accessed by shared code
967 * Commits changes to PHY configuration by calling e1000_phy_reset().
969 static s32 e1000_copper_link_rtl_setup(struct e1000_hw *hw)
973 /* SW reset the PHY so all changes take effect */
974 ret_val = e1000_phy_reset(hw);
976 e_dbg("Error Resetting the PHY\n");
980 return E1000_SUCCESS;
983 static s32 gbe_dhg_phy_setup(struct e1000_hw *hw)
988 switch (hw->phy_type) {
990 ret_val = e1000_copper_link_rtl_setup(hw);
992 e_dbg("e1000_copper_link_rtl_setup failed!\n");
998 ctrl_aux = er32(CTL_AUX);
999 ctrl_aux |= E1000_CTL_AUX_RMII;
1000 ew32(CTL_AUX, ctrl_aux);
1001 E1000_WRITE_FLUSH();
1003 /* Disable the J/K bits required for receive */
1004 ctrl_aux = er32(CTL_AUX);
1007 ew32(CTL_AUX, ctrl_aux);
1008 E1000_WRITE_FLUSH();
1009 ret_val = e1000_copper_link_rtl_setup(hw);
1012 e_dbg("e1000_copper_link_rtl_setup failed!\n");
1017 e_dbg("Error Resetting the PHY\n");
1018 return E1000_ERR_PHY_TYPE;
1021 return E1000_SUCCESS;
1025 * e1000_copper_link_preconfig - early configuration for copper
1026 * @hw: Struct containing variables accessed by shared code
1028 * Make sure we have a valid PHY and change PHY mode before link setup.
1030 static s32 e1000_copper_link_preconfig(struct e1000_hw *hw)
1037 /* With 82543, we need to force speed and duplex on the MAC equal to
1038 * what the PHY speed and duplex configuration is. In addition, we need
1039 * to perform a hardware reset on the PHY to take it out of reset.
1041 if (hw->mac_type > e1000_82543) {
1042 ctrl |= E1000_CTRL_SLU;
1043 ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
1047 (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX | E1000_CTRL_SLU);
1049 ret_val = e1000_phy_hw_reset(hw);
1054 /* Make sure we have a valid PHY */
1055 ret_val = e1000_detect_gig_phy(hw);
1057 e_dbg("Error, did not detect valid phy.\n");
1060 e_dbg("Phy ID = %x\n", hw->phy_id);
1062 /* Set PHY to class A mode (if necessary) */
1063 ret_val = e1000_set_phy_mode(hw);
1067 if ((hw->mac_type == e1000_82545_rev_3) ||
1068 (hw->mac_type == e1000_82546_rev_3)) {
1070 e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
1071 phy_data |= 0x00000008;
1073 e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data);
1076 if (hw->mac_type <= e1000_82543 ||
1077 hw->mac_type == e1000_82541 || hw->mac_type == e1000_82547 ||
1078 hw->mac_type == e1000_82541_rev_2
1079 || hw->mac_type == e1000_82547_rev_2)
1080 hw->phy_reset_disable = false;
1082 return E1000_SUCCESS;
1086 * e1000_copper_link_igp_setup - Copper link setup for e1000_phy_igp series.
1087 * @hw: Struct containing variables accessed by shared code
1089 static s32 e1000_copper_link_igp_setup(struct e1000_hw *hw)
1095 if (hw->phy_reset_disable)
1096 return E1000_SUCCESS;
1098 ret_val = e1000_phy_reset(hw);
1100 e_dbg("Error Resetting the PHY\n");
1104 /* Wait 15ms for MAC to configure PHY from eeprom settings */
1106 /* Configure activity LED after PHY reset */
1107 led_ctrl = er32(LEDCTL);
1108 led_ctrl &= IGP_ACTIVITY_LED_MASK;
1109 led_ctrl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE);
1110 ew32(LEDCTL, led_ctrl);
1112 /* The NVM settings will configure LPLU in D3 for IGP2 and IGP3 PHYs */
1113 if (hw->phy_type == e1000_phy_igp) {
1114 /* disable lplu d3 during driver init */
1115 ret_val = e1000_set_d3_lplu_state(hw, false);
1117 e_dbg("Error Disabling LPLU D3\n");
1122 /* Configure mdi-mdix settings */
1123 ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, &phy_data);
1127 if ((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_82547)) {
1128 hw->dsp_config_state = e1000_dsp_config_disabled;
1129 /* Force MDI for earlier revs of the IGP PHY */
1131 ~(IGP01E1000_PSCR_AUTO_MDIX |
1132 IGP01E1000_PSCR_FORCE_MDI_MDIX);
1136 hw->dsp_config_state = e1000_dsp_config_enabled;
1137 phy_data &= ~IGP01E1000_PSCR_AUTO_MDIX;
1141 phy_data &= ~IGP01E1000_PSCR_FORCE_MDI_MDIX;
1144 phy_data |= IGP01E1000_PSCR_FORCE_MDI_MDIX;
1148 phy_data |= IGP01E1000_PSCR_AUTO_MDIX;
1152 ret_val = e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, phy_data);
1156 /* set auto-master slave resolution settings */
1158 e1000_ms_type phy_ms_setting = hw->master_slave;
1160 if (hw->ffe_config_state == e1000_ffe_config_active)
1161 hw->ffe_config_state = e1000_ffe_config_enabled;
1163 if (hw->dsp_config_state == e1000_dsp_config_activated)
1164 hw->dsp_config_state = e1000_dsp_config_enabled;
1166 /* when autonegotiation advertisement is only 1000Mbps then we
1167 * should disable SmartSpeed and enable Auto MasterSlave
1168 * resolution as hardware default.
1170 if (hw->autoneg_advertised == ADVERTISE_1000_FULL) {
1171 /* Disable SmartSpeed */
1173 e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
1177 phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
1179 e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
1183 /* Set auto Master/Slave resolution process */
1185 e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_data);
1188 phy_data &= ~CR_1000T_MS_ENABLE;
1190 e1000_write_phy_reg(hw, PHY_1000T_CTRL, phy_data);
1195 ret_val = e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_data);
1199 /* load defaults for future use */
1200 hw->original_master_slave = (phy_data & CR_1000T_MS_ENABLE) ?
1201 ((phy_data & CR_1000T_MS_VALUE) ?
1202 e1000_ms_force_master :
1203 e1000_ms_force_slave) : e1000_ms_auto;
1205 switch (phy_ms_setting) {
1206 case e1000_ms_force_master:
1207 phy_data |= (CR_1000T_MS_ENABLE | CR_1000T_MS_VALUE);
1209 case e1000_ms_force_slave:
1210 phy_data |= CR_1000T_MS_ENABLE;
1211 phy_data &= ~(CR_1000T_MS_VALUE);
1214 phy_data &= ~CR_1000T_MS_ENABLE;
1218 ret_val = e1000_write_phy_reg(hw, PHY_1000T_CTRL, phy_data);
1223 return E1000_SUCCESS;
1227 * e1000_copper_link_mgp_setup - Copper link setup for e1000_phy_m88 series.
1228 * @hw: Struct containing variables accessed by shared code
1230 static s32 e1000_copper_link_mgp_setup(struct e1000_hw *hw)
1235 if (hw->phy_reset_disable)
1236 return E1000_SUCCESS;
1238 /* Enable CRS on TX. This must be set for half-duplex operation. */
1239 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
1243 phy_data |= M88E1000_PSCR_ASSERT_CRS_ON_TX;
1246 * MDI/MDI-X = 0 (default)
1247 * 0 - Auto for all speeds
1250 * 3 - Auto for 1000Base-T only (MDI-X for 10/100Base-T modes)
1252 phy_data &= ~M88E1000_PSCR_AUTO_X_MODE;
1256 phy_data |= M88E1000_PSCR_MDI_MANUAL_MODE;
1259 phy_data |= M88E1000_PSCR_MDIX_MANUAL_MODE;
1262 phy_data |= M88E1000_PSCR_AUTO_X_1000T;
1266 phy_data |= M88E1000_PSCR_AUTO_X_MODE;
1271 * disable_polarity_correction = 0 (default)
1272 * Automatic Correction for Reversed Cable Polarity
1276 phy_data &= ~M88E1000_PSCR_POLARITY_REVERSAL;
1277 if (hw->disable_polarity_correction == 1)
1278 phy_data |= M88E1000_PSCR_POLARITY_REVERSAL;
1279 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data);
1283 if (hw->phy_revision < M88E1011_I_REV_4) {
1284 /* Force TX_CLK in the Extended PHY Specific Control Register
1288 e1000_read_phy_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL,
1293 phy_data |= M88E1000_EPSCR_TX_CLK_25;
1295 if ((hw->phy_revision == E1000_REVISION_2) &&
1296 (hw->phy_id == M88E1111_I_PHY_ID)) {
1297 /* Vidalia Phy, set the downshift counter to 5x */
1298 phy_data &= ~(M88EC018_EPSCR_DOWNSHIFT_COUNTER_MASK);
1299 phy_data |= M88EC018_EPSCR_DOWNSHIFT_COUNTER_5X;
1300 ret_val = e1000_write_phy_reg(hw,
1301 M88E1000_EXT_PHY_SPEC_CTRL,
1306 /* Configure Master and Slave downshift values */
1307 phy_data &= ~(M88E1000_EPSCR_MASTER_DOWNSHIFT_MASK |
1308 M88E1000_EPSCR_SLAVE_DOWNSHIFT_MASK);
1309 phy_data |= (M88E1000_EPSCR_MASTER_DOWNSHIFT_1X |
1310 M88E1000_EPSCR_SLAVE_DOWNSHIFT_1X);
1311 ret_val = e1000_write_phy_reg(hw,
1312 M88E1000_EXT_PHY_SPEC_CTRL,
1319 /* SW Reset the PHY so all changes take effect */
1320 ret_val = e1000_phy_reset(hw);
1322 e_dbg("Error Resetting the PHY\n");
1326 return E1000_SUCCESS;
1330 * e1000_copper_link_autoneg - setup auto-neg
1331 * @hw: Struct containing variables accessed by shared code
1333 * Setup auto-negotiation and flow control advertisements,
1334 * and then perform auto-negotiation.
1336 static s32 e1000_copper_link_autoneg(struct e1000_hw *hw)
1341 /* Perform some bounds checking on the hw->autoneg_advertised
1342 * parameter. If this variable is zero, then set it to the default.
1344 hw->autoneg_advertised &= AUTONEG_ADVERTISE_SPEED_DEFAULT;
1346 /* If autoneg_advertised is zero, we assume it was not defaulted
1347 * by the calling code so we set to advertise full capability.
1349 if (hw->autoneg_advertised == 0)
1350 hw->autoneg_advertised = AUTONEG_ADVERTISE_SPEED_DEFAULT;
1352 /* IFE/RTL8201N PHY only supports 10/100 */
1353 if (hw->phy_type == e1000_phy_8201)
1354 hw->autoneg_advertised &= AUTONEG_ADVERTISE_10_100_ALL;
1356 e_dbg("Reconfiguring auto-neg advertisement params\n");
1357 ret_val = e1000_phy_setup_autoneg(hw);
1359 e_dbg("Error Setting up Auto-Negotiation\n");
1362 e_dbg("Restarting Auto-Neg\n");
1364 /* Restart auto-negotiation by setting the Auto Neg Enable bit and
1365 * the Auto Neg Restart bit in the PHY control register.
1367 ret_val = e1000_read_phy_reg(hw, PHY_CTRL, &phy_data);
1371 phy_data |= (MII_CR_AUTO_NEG_EN | MII_CR_RESTART_AUTO_NEG);
1372 ret_val = e1000_write_phy_reg(hw, PHY_CTRL, phy_data);
1376 /* Does the user want to wait for Auto-Neg to complete here, or
1377 * check at a later time (for example, callback routine).
1379 if (hw->wait_autoneg_complete) {
1380 ret_val = e1000_wait_autoneg(hw);
1383 ("Error while waiting for autoneg to complete\n");
1388 hw->get_link_status = true;
1390 return E1000_SUCCESS;
1394 * e1000_copper_link_postconfig - post link setup
1395 * @hw: Struct containing variables accessed by shared code
1397 * Config the MAC and the PHY after link is up.
1398 * 1) Set up the MAC to the current PHY speed/duplex
1399 * if we are on 82543. If we
1400 * are on newer silicon, we only need to configure
1401 * collision distance in the Transmit Control Register.
1402 * 2) Set up flow control on the MAC to that established with
1404 * 3) Config DSP to improve Gigabit link quality for some PHY revisions.
1406 static s32 e1000_copper_link_postconfig(struct e1000_hw *hw)
1410 if ((hw->mac_type >= e1000_82544) && (hw->mac_type != e1000_ce4100)) {
1411 e1000_config_collision_dist(hw);
1413 ret_val = e1000_config_mac_to_phy(hw);
1415 e_dbg("Error configuring MAC to PHY settings\n");
1419 ret_val = e1000_config_fc_after_link_up(hw);
1421 e_dbg("Error Configuring Flow Control\n");
1425 /* Config DSP to improve Giga link quality */
1426 if (hw->phy_type == e1000_phy_igp) {
1427 ret_val = e1000_config_dsp_after_link_change(hw, true);
1429 e_dbg("Error Configuring DSP after link up\n");
1434 return E1000_SUCCESS;
1438 * e1000_setup_copper_link - phy/speed/duplex setting
1439 * @hw: Struct containing variables accessed by shared code
1441 * Detects which PHY is present and sets up the speed and duplex
1443 static s32 e1000_setup_copper_link(struct e1000_hw *hw)
1449 /* Check if it is a valid PHY and set PHY mode if necessary. */
1450 ret_val = e1000_copper_link_preconfig(hw);
1454 if (hw->phy_type == e1000_phy_igp) {
1455 ret_val = e1000_copper_link_igp_setup(hw);
1458 } else if (hw->phy_type == e1000_phy_m88) {
1459 ret_val = e1000_copper_link_mgp_setup(hw);
1463 ret_val = gbe_dhg_phy_setup(hw);
1465 e_dbg("gbe_dhg_phy_setup failed!\n");
1471 /* Setup autoneg and flow control advertisement
1472 * and perform autonegotiation
1474 ret_val = e1000_copper_link_autoneg(hw);
1478 /* PHY will be set to 10H, 10F, 100H,or 100F
1479 * depending on value from forced_speed_duplex.
1481 e_dbg("Forcing speed and duplex\n");
1482 ret_val = e1000_phy_force_speed_duplex(hw);
1484 e_dbg("Error Forcing Speed and Duplex\n");
1489 /* Check link status. Wait up to 100 microseconds for link to become
1492 for (i = 0; i < 10; i++) {
1493 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
1496 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
1500 if (phy_data & MII_SR_LINK_STATUS) {
1501 /* Config the MAC and PHY after link is up */
1502 ret_val = e1000_copper_link_postconfig(hw);
1506 e_dbg("Valid link established!!!\n");
1507 return E1000_SUCCESS;
1512 e_dbg("Unable to establish link!!!\n");
1513 return E1000_SUCCESS;
1517 * e1000_phy_setup_autoneg - phy settings
1518 * @hw: Struct containing variables accessed by shared code
1520 * Configures PHY autoneg and flow control advertisement settings
1522 s32 e1000_phy_setup_autoneg(struct e1000_hw *hw)
1525 u16 mii_autoneg_adv_reg;
1526 u16 mii_1000t_ctrl_reg;
1528 /* Read the MII Auto-Neg Advertisement Register (Address 4). */
1529 ret_val = e1000_read_phy_reg(hw, PHY_AUTONEG_ADV, &mii_autoneg_adv_reg);
1533 /* Read the MII 1000Base-T Control Register (Address 9). */
1534 ret_val = e1000_read_phy_reg(hw, PHY_1000T_CTRL, &mii_1000t_ctrl_reg);
1537 else if (hw->phy_type == e1000_phy_8201)
1538 mii_1000t_ctrl_reg &= ~REG9_SPEED_MASK;
1540 /* Need to parse both autoneg_advertised and fc and set up
1541 * the appropriate PHY registers. First we will parse for
1542 * autoneg_advertised software override. Since we can advertise
1543 * a plethora of combinations, we need to check each bit
1547 /* First we clear all the 10/100 mb speed bits in the Auto-Neg
1548 * Advertisement Register (Address 4) and the 1000 mb speed bits in
1549 * the 1000Base-T Control Register (Address 9).
1551 mii_autoneg_adv_reg &= ~REG4_SPEED_MASK;
1552 mii_1000t_ctrl_reg &= ~REG9_SPEED_MASK;
1554 e_dbg("autoneg_advertised %x\n", hw->autoneg_advertised);
1556 /* Do we want to advertise 10 Mb Half Duplex? */
1557 if (hw->autoneg_advertised & ADVERTISE_10_HALF) {
1558 e_dbg("Advertise 10mb Half duplex\n");
1559 mii_autoneg_adv_reg |= NWAY_AR_10T_HD_CAPS;
1562 /* Do we want to advertise 10 Mb Full Duplex? */
1563 if (hw->autoneg_advertised & ADVERTISE_10_FULL) {
1564 e_dbg("Advertise 10mb Full duplex\n");
1565 mii_autoneg_adv_reg |= NWAY_AR_10T_FD_CAPS;
1568 /* Do we want to advertise 100 Mb Half Duplex? */
1569 if (hw->autoneg_advertised & ADVERTISE_100_HALF) {
1570 e_dbg("Advertise 100mb Half duplex\n");
1571 mii_autoneg_adv_reg |= NWAY_AR_100TX_HD_CAPS;
1574 /* Do we want to advertise 100 Mb Full Duplex? */
1575 if (hw->autoneg_advertised & ADVERTISE_100_FULL) {
1576 e_dbg("Advertise 100mb Full duplex\n");
1577 mii_autoneg_adv_reg |= NWAY_AR_100TX_FD_CAPS;
1580 /* We do not allow the Phy to advertise 1000 Mb Half Duplex */
1581 if (hw->autoneg_advertised & ADVERTISE_1000_HALF) {
1583 ("Advertise 1000mb Half duplex requested, request denied!\n");
1586 /* Do we want to advertise 1000 Mb Full Duplex? */
1587 if (hw->autoneg_advertised & ADVERTISE_1000_FULL) {
1588 e_dbg("Advertise 1000mb Full duplex\n");
1589 mii_1000t_ctrl_reg |= CR_1000T_FD_CAPS;
1592 /* Check for a software override of the flow control settings, and
1593 * setup the PHY advertisement registers accordingly. If
1594 * auto-negotiation is enabled, then software will have to set the
1595 * "PAUSE" bits to the correct value in the Auto-Negotiation
1596 * Advertisement Register (PHY_AUTONEG_ADV) and re-start
1599 * The possible values of the "fc" parameter are:
1600 * 0: Flow control is completely disabled
1601 * 1: Rx flow control is enabled (we can receive pause frames
1602 * but not send pause frames).
1603 * 2: Tx flow control is enabled (we can send pause frames
1604 * but we do not support receiving pause frames).
1605 * 3: Both Rx and TX flow control (symmetric) are enabled.
1606 * other: No software override. The flow control configuration
1607 * in the EEPROM is used.
1610 case E1000_FC_NONE: /* 0 */
1611 /* Flow control (RX & TX) is completely disabled by a
1612 * software over-ride.
1614 mii_autoneg_adv_reg &= ~(NWAY_AR_ASM_DIR | NWAY_AR_PAUSE);
1616 case E1000_FC_RX_PAUSE: /* 1 */
1617 /* RX Flow control is enabled, and TX Flow control is
1618 * disabled, by a software over-ride.
1620 /* Since there really isn't a way to advertise that we are
1621 * capable of RX Pause ONLY, we will advertise that we
1622 * support both symmetric and asymmetric RX PAUSE. Later
1623 * (in e1000_config_fc_after_link_up) we will disable the
1624 * hw's ability to send PAUSE frames.
1626 mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE);
1628 case E1000_FC_TX_PAUSE: /* 2 */
1629 /* TX Flow control is enabled, and RX Flow control is
1630 * disabled, by a software over-ride.
1632 mii_autoneg_adv_reg |= NWAY_AR_ASM_DIR;
1633 mii_autoneg_adv_reg &= ~NWAY_AR_PAUSE;
1635 case E1000_FC_FULL: /* 3 */
1636 /* Flow control (both RX and TX) is enabled by a software
1639 mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE);
1642 e_dbg("Flow control param set incorrectly\n");
1643 return -E1000_ERR_CONFIG;
1646 ret_val = e1000_write_phy_reg(hw, PHY_AUTONEG_ADV, mii_autoneg_adv_reg);
1650 e_dbg("Auto-Neg Advertising %x\n", mii_autoneg_adv_reg);
1652 if (hw->phy_type == e1000_phy_8201) {
1653 mii_1000t_ctrl_reg = 0;
1655 ret_val = e1000_write_phy_reg(hw, PHY_1000T_CTRL,
1656 mii_1000t_ctrl_reg);
1661 return E1000_SUCCESS;
1665 * e1000_phy_force_speed_duplex - force link settings
1666 * @hw: Struct containing variables accessed by shared code
1668 * Force PHY speed and duplex settings to hw->forced_speed_duplex
1670 static s32 e1000_phy_force_speed_duplex(struct e1000_hw *hw)
1679 /* Turn off Flow control if we are forcing speed and duplex. */
1680 hw->fc = E1000_FC_NONE;
1682 e_dbg("hw->fc = %d\n", hw->fc);
1684 /* Read the Device Control Register. */
1687 /* Set the bits to Force Speed and Duplex in the Device Ctrl Reg. */
1688 ctrl |= (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
1689 ctrl &= ~(DEVICE_SPEED_MASK);
1691 /* Clear the Auto Speed Detect Enable bit. */
1692 ctrl &= ~E1000_CTRL_ASDE;
1694 /* Read the MII Control Register. */
1695 ret_val = e1000_read_phy_reg(hw, PHY_CTRL, &mii_ctrl_reg);
1699 /* We need to disable autoneg in order to force link and duplex. */
1701 mii_ctrl_reg &= ~MII_CR_AUTO_NEG_EN;
1703 /* Are we forcing Full or Half Duplex? */
1704 if (hw->forced_speed_duplex == e1000_100_full ||
1705 hw->forced_speed_duplex == e1000_10_full) {
1706 /* We want to force full duplex so we SET the full duplex bits
1707 * in the Device and MII Control Registers.
1709 ctrl |= E1000_CTRL_FD;
1710 mii_ctrl_reg |= MII_CR_FULL_DUPLEX;
1711 e_dbg("Full Duplex\n");
1713 /* We want to force half duplex so we CLEAR the full duplex bits
1714 * in the Device and MII Control Registers.
1716 ctrl &= ~E1000_CTRL_FD;
1717 mii_ctrl_reg &= ~MII_CR_FULL_DUPLEX;
1718 e_dbg("Half Duplex\n");
1721 /* Are we forcing 100Mbps??? */
1722 if (hw->forced_speed_duplex == e1000_100_full ||
1723 hw->forced_speed_duplex == e1000_100_half) {
1724 /* Set the 100Mb bit and turn off the 1000Mb and 10Mb bits. */
1725 ctrl |= E1000_CTRL_SPD_100;
1726 mii_ctrl_reg |= MII_CR_SPEED_100;
1727 mii_ctrl_reg &= ~(MII_CR_SPEED_1000 | MII_CR_SPEED_10);
1728 e_dbg("Forcing 100mb ");
1730 /* Set the 10Mb bit and turn off the 1000Mb and 100Mb bits. */
1731 ctrl &= ~(E1000_CTRL_SPD_1000 | E1000_CTRL_SPD_100);
1732 mii_ctrl_reg |= MII_CR_SPEED_10;
1733 mii_ctrl_reg &= ~(MII_CR_SPEED_1000 | MII_CR_SPEED_100);
1734 e_dbg("Forcing 10mb ");
1737 e1000_config_collision_dist(hw);
1739 /* Write the configured values back to the Device Control Reg. */
1742 if (hw->phy_type == e1000_phy_m88) {
1744 e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
1748 /* Clear Auto-Crossover to force MDI manually. M88E1000 requires
1749 * MDI forced whenever speed are duplex are forced.
1751 phy_data &= ~M88E1000_PSCR_AUTO_X_MODE;
1753 e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data);
1757 e_dbg("M88E1000 PSCR: %x\n", phy_data);
1759 /* Need to reset the PHY or these changes will be ignored */
1760 mii_ctrl_reg |= MII_CR_RESET;
1762 /* Disable MDI-X support for 10/100 */
1764 /* Clear Auto-Crossover to force MDI manually. IGP requires MDI
1765 * forced whenever speed or duplex are forced.
1768 e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, &phy_data);
1772 phy_data &= ~IGP01E1000_PSCR_AUTO_MDIX;
1773 phy_data &= ~IGP01E1000_PSCR_FORCE_MDI_MDIX;
1776 e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, phy_data);
1781 /* Write back the modified PHY MII control register. */
1782 ret_val = e1000_write_phy_reg(hw, PHY_CTRL, mii_ctrl_reg);
1788 /* The wait_autoneg_complete flag may be a little misleading here.
1789 * Since we are forcing speed and duplex, Auto-Neg is not enabled.
1790 * But we do want to delay for a period while forcing only so we
1791 * don't generate false No Link messages. So we will wait here
1792 * only if the user has set wait_autoneg_complete to 1, which is
1795 if (hw->wait_autoneg_complete) {
1796 /* We will wait for autoneg to complete. */
1797 e_dbg("Waiting for forced speed/duplex link.\n");
1800 /* Wait for autoneg to complete or 4.5 seconds to expire */
1801 for (i = PHY_FORCE_TIME; i > 0; i--) {
1802 /* Read the MII Status Register and wait for Auto-Neg
1803 * Complete bit to be set.
1806 e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
1811 e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
1815 if (mii_status_reg & MII_SR_LINK_STATUS)
1819 if ((i == 0) && (hw->phy_type == e1000_phy_m88)) {
1820 /* We didn't get link. Reset the DSP and wait again
1823 ret_val = e1000_phy_reset_dsp(hw);
1825 e_dbg("Error Resetting PHY DSP\n");
1829 /* This loop will early-out if the link condition has been
1832 for (i = PHY_FORCE_TIME; i > 0; i--) {
1833 if (mii_status_reg & MII_SR_LINK_STATUS)
1836 /* Read the MII Status Register and wait for Auto-Neg
1837 * Complete bit to be set.
1840 e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
1845 e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
1851 if (hw->phy_type == e1000_phy_m88) {
1852 /* Because we reset the PHY above, we need to re-force TX_CLK in
1853 * the Extended PHY Specific Control Register to 25MHz clock.
1854 * This value defaults back to a 2.5MHz clock when the PHY is
1858 e1000_read_phy_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL,
1863 phy_data |= M88E1000_EPSCR_TX_CLK_25;
1865 e1000_write_phy_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL,
1870 /* In addition, because of the s/w reset above, we need to
1871 * enable CRS on Tx. This must be set for both full and half
1875 e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
1879 phy_data |= M88E1000_PSCR_ASSERT_CRS_ON_TX;
1881 e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data);
1885 if ((hw->mac_type == e1000_82544 || hw->mac_type == e1000_82543)
1887 && (hw->forced_speed_duplex == e1000_10_full
1888 || hw->forced_speed_duplex == e1000_10_half)) {
1889 ret_val = e1000_polarity_reversal_workaround(hw);
1894 return E1000_SUCCESS;
1898 * e1000_config_collision_dist - set collision distance register
1899 * @hw: Struct containing variables accessed by shared code
1901 * Sets the collision distance in the Transmit Control register.
1902 * Link should have been established previously. Reads the speed and duplex
1903 * information from the Device Status register.
1905 void e1000_config_collision_dist(struct e1000_hw *hw)
1907 u32 tctl, coll_dist;
1909 if (hw->mac_type < e1000_82543)
1910 coll_dist = E1000_COLLISION_DISTANCE_82542;
1912 coll_dist = E1000_COLLISION_DISTANCE;
1916 tctl &= ~E1000_TCTL_COLD;
1917 tctl |= coll_dist << E1000_COLD_SHIFT;
1920 E1000_WRITE_FLUSH();
1924 * e1000_config_mac_to_phy - sync phy and mac settings
1925 * @hw: Struct containing variables accessed by shared code
1926 * @mii_reg: data to write to the MII control register
1928 * Sets MAC speed and duplex settings to reflect the those in the PHY
1929 * The contents of the PHY register containing the needed information need to
1932 static s32 e1000_config_mac_to_phy(struct e1000_hw *hw)
1938 /* 82544 or newer MAC, Auto Speed Detection takes care of
1939 * MAC speed/duplex configuration.
1941 if ((hw->mac_type >= e1000_82544) && (hw->mac_type != e1000_ce4100))
1942 return E1000_SUCCESS;
1944 /* Read the Device Control Register and set the bits to Force Speed
1948 ctrl |= (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
1949 ctrl &= ~(E1000_CTRL_SPD_SEL | E1000_CTRL_ILOS);
1951 switch (hw->phy_type) {
1952 case e1000_phy_8201:
1953 ret_val = e1000_read_phy_reg(hw, PHY_CTRL, &phy_data);
1957 if (phy_data & RTL_PHY_CTRL_FD)
1958 ctrl |= E1000_CTRL_FD;
1960 ctrl &= ~E1000_CTRL_FD;
1962 if (phy_data & RTL_PHY_CTRL_SPD_100)
1963 ctrl |= E1000_CTRL_SPD_100;
1965 ctrl |= E1000_CTRL_SPD_10;
1967 e1000_config_collision_dist(hw);
1970 /* Set up duplex in the Device Control and Transmit Control
1971 * registers depending on negotiated values.
1973 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS,
1978 if (phy_data & M88E1000_PSSR_DPLX)
1979 ctrl |= E1000_CTRL_FD;
1981 ctrl &= ~E1000_CTRL_FD;
1983 e1000_config_collision_dist(hw);
1985 /* Set up speed in the Device Control register depending on
1986 * negotiated values.
1988 if ((phy_data & M88E1000_PSSR_SPEED) == M88E1000_PSSR_1000MBS)
1989 ctrl |= E1000_CTRL_SPD_1000;
1990 else if ((phy_data & M88E1000_PSSR_SPEED) ==
1991 M88E1000_PSSR_100MBS)
1992 ctrl |= E1000_CTRL_SPD_100;
1995 /* Write the configured values back to the Device Control Reg. */
1997 return E1000_SUCCESS;
2001 * e1000_force_mac_fc - force flow control settings
2002 * @hw: Struct containing variables accessed by shared code
2004 * Forces the MAC's flow control settings.
2005 * Sets the TFCE and RFCE bits in the device control register to reflect
2006 * the adapter settings. TFCE and RFCE need to be explicitly set by
2007 * software when a Copper PHY is used because autonegotiation is managed
2008 * by the PHY rather than the MAC. Software must also configure these
2009 * bits when link is forced on a fiber connection.
2011 s32 e1000_force_mac_fc(struct e1000_hw *hw)
2015 /* Get the current configuration of the Device Control Register */
2018 /* Because we didn't get link via the internal auto-negotiation
2019 * mechanism (we either forced link or we got link via PHY
2020 * auto-neg), we have to manually enable/disable transmit an
2021 * receive flow control.
2023 * The "Case" statement below enables/disable flow control
2024 * according to the "hw->fc" parameter.
2026 * The possible values of the "fc" parameter are:
2027 * 0: Flow control is completely disabled
2028 * 1: Rx flow control is enabled (we can receive pause
2029 * frames but not send pause frames).
2030 * 2: Tx flow control is enabled (we can send pause frames
2031 * frames but we do not receive pause frames).
2032 * 3: Both Rx and TX flow control (symmetric) is enabled.
2033 * other: No other values should be possible at this point.
2038 ctrl &= (~(E1000_CTRL_TFCE | E1000_CTRL_RFCE));
2040 case E1000_FC_RX_PAUSE:
2041 ctrl &= (~E1000_CTRL_TFCE);
2042 ctrl |= E1000_CTRL_RFCE;
2044 case E1000_FC_TX_PAUSE:
2045 ctrl &= (~E1000_CTRL_RFCE);
2046 ctrl |= E1000_CTRL_TFCE;
2049 ctrl |= (E1000_CTRL_TFCE | E1000_CTRL_RFCE);
2052 e_dbg("Flow control param set incorrectly\n");
2053 return -E1000_ERR_CONFIG;
2056 /* Disable TX Flow Control for 82542 (rev 2.0) */
2057 if (hw->mac_type == e1000_82542_rev2_0)
2058 ctrl &= (~E1000_CTRL_TFCE);
2061 return E1000_SUCCESS;
2065 * e1000_config_fc_after_link_up - configure flow control after autoneg
2066 * @hw: Struct containing variables accessed by shared code
2068 * Configures flow control settings after link is established
2069 * Should be called immediately after a valid link has been established.
2070 * Forces MAC flow control settings if link was forced. When in MII/GMII mode
2071 * and autonegotiation is enabled, the MAC flow control settings will be set
2072 * based on the flow control negotiated by the PHY. In TBI mode, the TFCE
2073 * and RFCE bits will be automatically set to the negotiated flow control mode.
2075 static s32 e1000_config_fc_after_link_up(struct e1000_hw *hw)
2079 u16 mii_nway_adv_reg;
2080 u16 mii_nway_lp_ability_reg;
2084 /* Check for the case where we have fiber media and auto-neg failed
2085 * so we had to force link. In this case, we need to force the
2086 * configuration of the MAC to match the "fc" parameter.
2088 if (((hw->media_type == e1000_media_type_fiber) && (hw->autoneg_failed))
2089 || ((hw->media_type == e1000_media_type_internal_serdes)
2090 && (hw->autoneg_failed))
2091 || ((hw->media_type == e1000_media_type_copper)
2092 && (!hw->autoneg))) {
2093 ret_val = e1000_force_mac_fc(hw);
2095 e_dbg("Error forcing flow control settings\n");
2100 /* Check for the case where we have copper media and auto-neg is
2101 * enabled. In this case, we need to check and see if Auto-Neg
2102 * has completed, and if so, how the PHY and link partner has
2103 * flow control configured.
2105 if ((hw->media_type == e1000_media_type_copper) && hw->autoneg) {
2106 /* Read the MII Status Register and check to see if AutoNeg
2107 * has completed. We read this twice because this reg has
2108 * some "sticky" (latched) bits.
2110 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
2113 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
2117 if (mii_status_reg & MII_SR_AUTONEG_COMPLETE) {
2118 /* The AutoNeg process has completed, so we now need to
2119 * read both the Auto Negotiation Advertisement Register
2120 * (Address 4) and the Auto_Negotiation Base Page
2121 * Ability Register (Address 5) to determine how flow
2122 * control was negotiated.
2124 ret_val = e1000_read_phy_reg(hw, PHY_AUTONEG_ADV,
2128 ret_val = e1000_read_phy_reg(hw, PHY_LP_ABILITY,
2129 &mii_nway_lp_ability_reg);
2133 /* Two bits in the Auto Negotiation Advertisement
2134 * Register (Address 4) and two bits in the Auto
2135 * Negotiation Base Page Ability Register (Address 5)
2136 * determine flow control for both the PHY and the link
2137 * partner. The following table, taken out of the IEEE
2138 * 802.3ab/D6.0 dated March 25, 1999, describes these
2139 * PAUSE resolution bits and how flow control is
2140 * determined based upon these settings.
2141 * NOTE: DC = Don't Care
2143 * LOCAL DEVICE | LINK PARTNER
2144 * PAUSE | ASM_DIR | PAUSE | ASM_DIR | NIC Resolution
2145 *-------|---------|-------|---------|------------------
2146 * 0 | 0 | DC | DC | E1000_FC_NONE
2147 * 0 | 1 | 0 | DC | E1000_FC_NONE
2148 * 0 | 1 | 1 | 0 | E1000_FC_NONE
2149 * 0 | 1 | 1 | 1 | E1000_FC_TX_PAUSE
2150 * 1 | 0 | 0 | DC | E1000_FC_NONE
2151 * 1 | DC | 1 | DC | E1000_FC_FULL
2152 * 1 | 1 | 0 | 0 | E1000_FC_NONE
2153 * 1 | 1 | 0 | 1 | E1000_FC_RX_PAUSE
2156 /* Are both PAUSE bits set to 1? If so, this implies
2157 * Symmetric Flow Control is enabled at both ends. The
2158 * ASM_DIR bits are irrelevant per the spec.
2160 * For Symmetric Flow Control:
2162 * LOCAL DEVICE | LINK PARTNER
2163 * PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result
2164 *-------|---------|-------|---------|------------------
2165 * 1 | DC | 1 | DC | E1000_FC_FULL
2168 if ((mii_nway_adv_reg & NWAY_AR_PAUSE) &&
2169 (mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE)) {
2170 /* Now we need to check if the user selected Rx
2171 * ONLY of pause frames. In this case, we had
2172 * to advertise FULL flow control because we
2173 * could not advertise Rx ONLY. Hence, we must
2174 * now check to see if we need to turn OFF the
2175 * TRANSMISSION of PAUSE frames.
2177 if (hw->original_fc == E1000_FC_FULL) {
2178 hw->fc = E1000_FC_FULL;
2179 e_dbg("Flow Control = FULL.\n");
2181 hw->fc = E1000_FC_RX_PAUSE;
2183 ("Flow Control = RX PAUSE frames only.\n");
2186 /* For receiving PAUSE frames ONLY.
2188 * LOCAL DEVICE | LINK PARTNER
2189 * PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result
2190 *-------|---------|-------|---------|------------------
2191 * 0 | 1 | 1 | 1 | E1000_FC_TX_PAUSE
2194 else if (!(mii_nway_adv_reg & NWAY_AR_PAUSE) &&
2195 (mii_nway_adv_reg & NWAY_AR_ASM_DIR) &&
2196 (mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE) &&
2197 (mii_nway_lp_ability_reg & NWAY_LPAR_ASM_DIR))
2199 hw->fc = E1000_FC_TX_PAUSE;
2201 ("Flow Control = TX PAUSE frames only.\n");
2203 /* For transmitting PAUSE frames ONLY.
2205 * LOCAL DEVICE | LINK PARTNER
2206 * PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result
2207 *-------|---------|-------|---------|------------------
2208 * 1 | 1 | 0 | 1 | E1000_FC_RX_PAUSE
2211 else if ((mii_nway_adv_reg & NWAY_AR_PAUSE) &&
2212 (mii_nway_adv_reg & NWAY_AR_ASM_DIR) &&
2213 !(mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE) &&
2214 (mii_nway_lp_ability_reg & NWAY_LPAR_ASM_DIR))
2216 hw->fc = E1000_FC_RX_PAUSE;
2218 ("Flow Control = RX PAUSE frames only.\n");
2220 /* Per the IEEE spec, at this point flow control should
2221 * be disabled. However, we want to consider that we
2222 * could be connected to a legacy switch that doesn't
2223 * advertise desired flow control, but can be forced on
2224 * the link partner. So if we advertised no flow
2225 * control, that is what we will resolve to. If we
2226 * advertised some kind of receive capability (Rx Pause
2227 * Only or Full Flow Control) and the link partner
2228 * advertised none, we will configure ourselves to
2229 * enable Rx Flow Control only. We can do this safely
2230 * for two reasons: If the link partner really
2231 * didn't want flow control enabled, and we enable Rx,
2232 * no harm done since we won't be receiving any PAUSE
2233 * frames anyway. If the intent on the link partner was
2234 * to have flow control enabled, then by us enabling Rx
2235 * only, we can at least receive pause frames and
2236 * process them. This is a good idea because in most
2237 * cases, since we are predominantly a server NIC, more
2238 * times than not we will be asked to delay transmission
2239 * of packets than asking our link partner to pause
2240 * transmission of frames.
2242 else if ((hw->original_fc == E1000_FC_NONE ||
2243 hw->original_fc == E1000_FC_TX_PAUSE) ||
2244 hw->fc_strict_ieee) {
2245 hw->fc = E1000_FC_NONE;
2246 e_dbg("Flow Control = NONE.\n");
2248 hw->fc = E1000_FC_RX_PAUSE;
2250 ("Flow Control = RX PAUSE frames only.\n");
2253 /* Now we need to do one last check... If we auto-
2254 * negotiated to HALF DUPLEX, flow control should not be
2255 * enabled per IEEE 802.3 spec.
2258 e1000_get_speed_and_duplex(hw, &speed, &duplex);
2261 ("Error getting link speed and duplex\n");
2265 if (duplex == HALF_DUPLEX)
2266 hw->fc = E1000_FC_NONE;
2268 /* Now we call a subroutine to actually force the MAC
2269 * controller to use the correct flow control settings.
2271 ret_val = e1000_force_mac_fc(hw);
2274 ("Error forcing flow control settings\n");
2279 ("Copper PHY and Auto Neg has not completed.\n");
2282 return E1000_SUCCESS;
2286 * e1000_check_for_serdes_link_generic - Check for link (Serdes)
2287 * @hw: pointer to the HW structure
2289 * Checks for link up on the hardware. If link is not up and we have
2290 * a signal, then we need to force link up.
2292 static s32 e1000_check_for_serdes_link_generic(struct e1000_hw *hw)
2297 s32 ret_val = E1000_SUCCESS;
2300 status = er32(STATUS);
2303 /* If we don't have link (auto-negotiation failed or link partner
2304 * cannot auto-negotiate), and our link partner is not trying to
2305 * auto-negotiate with us (we are receiving idles or data),
2306 * we need to force link up. We also need to give auto-negotiation
2309 /* (ctrl & E1000_CTRL_SWDPIN1) == 1 == have signal */
2310 if ((!(status & E1000_STATUS_LU)) && (!(rxcw & E1000_RXCW_C))) {
2311 if (hw->autoneg_failed == 0) {
2312 hw->autoneg_failed = 1;
2315 e_dbg("NOT RXing /C/, disable AutoNeg and force link.\n");
2317 /* Disable auto-negotiation in the TXCW register */
2318 ew32(TXCW, (hw->txcw & ~E1000_TXCW_ANE));
2320 /* Force link-up and also force full-duplex. */
2322 ctrl |= (E1000_CTRL_SLU | E1000_CTRL_FD);
2325 /* Configure Flow Control after forcing link up. */
2326 ret_val = e1000_config_fc_after_link_up(hw);
2328 e_dbg("Error configuring flow control\n");
2331 } else if ((ctrl & E1000_CTRL_SLU) && (rxcw & E1000_RXCW_C)) {
2332 /* If we are forcing link and we are receiving /C/ ordered
2333 * sets, re-enable auto-negotiation in the TXCW register
2334 * and disable forced link in the Device Control register
2335 * in an attempt to auto-negotiate with our link partner.
2337 e_dbg("RXing /C/, enable AutoNeg and stop forcing link.\n");
2338 ew32(TXCW, hw->txcw);
2339 ew32(CTRL, (ctrl & ~E1000_CTRL_SLU));
2341 hw->serdes_has_link = true;
2342 } else if (!(E1000_TXCW_ANE & er32(TXCW))) {
2343 /* If we force link for non-auto-negotiation switch, check
2344 * link status based on MAC synchronization for internal
2345 * serdes media type.
2347 /* SYNCH bit and IV bit are sticky. */
2350 if (rxcw & E1000_RXCW_SYNCH) {
2351 if (!(rxcw & E1000_RXCW_IV)) {
2352 hw->serdes_has_link = true;
2353 e_dbg("SERDES: Link up - forced.\n");
2356 hw->serdes_has_link = false;
2357 e_dbg("SERDES: Link down - force failed.\n");
2361 if (E1000_TXCW_ANE & er32(TXCW)) {
2362 status = er32(STATUS);
2363 if (status & E1000_STATUS_LU) {
2364 /* SYNCH bit and IV bit are sticky, so reread rxcw. */
2367 if (rxcw & E1000_RXCW_SYNCH) {
2368 if (!(rxcw & E1000_RXCW_IV)) {
2369 hw->serdes_has_link = true;
2370 e_dbg("SERDES: Link up - autoneg "
2371 "completed successfully.\n");
2373 hw->serdes_has_link = false;
2374 e_dbg("SERDES: Link down - invalid"
2375 "codewords detected in autoneg.\n");
2378 hw->serdes_has_link = false;
2379 e_dbg("SERDES: Link down - no sync.\n");
2382 hw->serdes_has_link = false;
2383 e_dbg("SERDES: Link down - autoneg failed\n");
2392 * e1000_check_for_link
2393 * @hw: Struct containing variables accessed by shared code
2395 * Checks to see if the link status of the hardware has changed.
2396 * Called by any function that needs to check the link status of the adapter.
2398 s32 e1000_check_for_link(struct e1000_hw *hw)
2410 status = er32(STATUS);
2412 /* On adapters with a MAC newer than 82544, SW Definable pin 1 will be
2413 * set when the optics detect a signal. On older adapters, it will be
2414 * cleared when there is a signal. This applies to fiber media only.
2416 if ((hw->media_type == e1000_media_type_fiber) ||
2417 (hw->media_type == e1000_media_type_internal_serdes)) {
2420 if (hw->media_type == e1000_media_type_fiber) {
2423 e1000_82544) ? E1000_CTRL_SWDPIN1 : 0;
2424 if (status & E1000_STATUS_LU)
2425 hw->get_link_status = false;
2429 /* If we have a copper PHY then we only want to go out to the PHY
2430 * registers to see if Auto-Neg has completed and/or if our link
2431 * status has changed. The get_link_status flag will be set if we
2432 * receive a Link Status Change interrupt or we have Rx Sequence
2435 if ((hw->media_type == e1000_media_type_copper) && hw->get_link_status) {
2436 /* First we want to see if the MII Status Register reports
2437 * link. If so, then we want to get the current speed/duplex
2439 * Read the register twice since the link bit is sticky.
2441 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
2444 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
2448 if (phy_data & MII_SR_LINK_STATUS) {
2449 hw->get_link_status = false;
2450 /* Check if there was DownShift, must be checked
2451 * immediately after link-up
2453 e1000_check_downshift(hw);
2455 /* If we are on 82544 or 82543 silicon and speed/duplex
2456 * are forced to 10H or 10F, then we will implement the
2457 * polarity reversal workaround. We disable interrupts
2458 * first, and upon returning, place the devices
2459 * interrupt state to its previous value except for the
2460 * link status change interrupt which will
2461 * happen due to the execution of this workaround.
2464 if ((hw->mac_type == e1000_82544
2465 || hw->mac_type == e1000_82543) && (!hw->autoneg)
2466 && (hw->forced_speed_duplex == e1000_10_full
2467 || hw->forced_speed_duplex == e1000_10_half)) {
2468 ew32(IMC, 0xffffffff);
2470 e1000_polarity_reversal_workaround(hw);
2472 ew32(ICS, (icr & ~E1000_ICS_LSC));
2473 ew32(IMS, IMS_ENABLE_MASK);
2477 /* No link detected */
2478 e1000_config_dsp_after_link_change(hw, false);
2482 /* If we are forcing speed/duplex, then we simply return since
2483 * we have already determined whether we have link or not.
2486 return -E1000_ERR_CONFIG;
2488 /* optimize the dsp settings for the igp phy */
2489 e1000_config_dsp_after_link_change(hw, true);
2491 /* We have a M88E1000 PHY and Auto-Neg is enabled. If we
2492 * have Si on board that is 82544 or newer, Auto
2493 * Speed Detection takes care of MAC speed/duplex
2494 * configuration. So we only need to configure Collision
2495 * Distance in the MAC. Otherwise, we need to force
2496 * speed/duplex on the MAC to the current PHY speed/duplex
2499 if ((hw->mac_type >= e1000_82544) &&
2500 (hw->mac_type != e1000_ce4100))
2501 e1000_config_collision_dist(hw);
2503 ret_val = e1000_config_mac_to_phy(hw);
2506 ("Error configuring MAC to PHY settings\n");
2511 /* Configure Flow Control now that Auto-Neg has completed.
2512 * First, we need to restore the desired flow control settings
2513 * because we may have had to re-autoneg with a different link
2516 ret_val = e1000_config_fc_after_link_up(hw);
2518 e_dbg("Error configuring flow control\n");
2522 /* At this point we know that we are on copper and we have
2523 * auto-negotiated link. These are conditions for checking the
2524 * link partner capability register. We use the link speed to
2525 * determine if TBI compatibility needs to be turned on or off.
2526 * If the link is not at gigabit speed, then TBI compatibility
2527 * is not needed. If we are at gigabit speed, we turn on TBI
2530 if (hw->tbi_compatibility_en) {
2533 e1000_get_speed_and_duplex(hw, &speed, &duplex);
2536 ("Error getting link speed and duplex\n");
2539 if (speed != SPEED_1000) {
2540 /* If link speed is not set to gigabit speed, we
2541 * do not need to enable TBI compatibility.
2543 if (hw->tbi_compatibility_on) {
2544 /* If we previously were in the mode,
2548 rctl &= ~E1000_RCTL_SBP;
2550 hw->tbi_compatibility_on = false;
2553 /* If TBI compatibility is was previously off,
2554 * turn it on. For compatibility with a TBI link
2555 * partner, we will store bad packets. Some
2556 * frames have an additional byte on the end and
2557 * will look like CRC errors to to the hardware.
2559 if (!hw->tbi_compatibility_on) {
2560 hw->tbi_compatibility_on = true;
2562 rctl |= E1000_RCTL_SBP;
2569 if ((hw->media_type == e1000_media_type_fiber) ||
2570 (hw->media_type == e1000_media_type_internal_serdes))
2571 e1000_check_for_serdes_link_generic(hw);
2573 return E1000_SUCCESS;
2577 * e1000_get_speed_and_duplex
2578 * @hw: Struct containing variables accessed by shared code
2579 * @speed: Speed of the connection
2580 * @duplex: Duplex setting of the connection
2582 * Detects the current speed and duplex settings of the hardware.
2584 s32 e1000_get_speed_and_duplex(struct e1000_hw *hw, u16 *speed, u16 *duplex)
2590 if (hw->mac_type >= e1000_82543) {
2591 status = er32(STATUS);
2592 if (status & E1000_STATUS_SPEED_1000) {
2593 *speed = SPEED_1000;
2594 e_dbg("1000 Mbs, ");
2595 } else if (status & E1000_STATUS_SPEED_100) {
2603 if (status & E1000_STATUS_FD) {
2604 *duplex = FULL_DUPLEX;
2605 e_dbg("Full Duplex\n");
2607 *duplex = HALF_DUPLEX;
2608 e_dbg(" Half Duplex\n");
2611 e_dbg("1000 Mbs, Full Duplex\n");
2612 *speed = SPEED_1000;
2613 *duplex = FULL_DUPLEX;
2616 /* IGP01 PHY may advertise full duplex operation after speed downgrade
2617 * even if it is operating at half duplex. Here we set the duplex
2618 * settings to match the duplex in the link partner's capabilities.
2620 if (hw->phy_type == e1000_phy_igp && hw->speed_downgraded) {
2621 ret_val = e1000_read_phy_reg(hw, PHY_AUTONEG_EXP, &phy_data);
2625 if (!(phy_data & NWAY_ER_LP_NWAY_CAPS))
2626 *duplex = HALF_DUPLEX;
2629 e1000_read_phy_reg(hw, PHY_LP_ABILITY, &phy_data);
2632 if ((*speed == SPEED_100
2633 && !(phy_data & NWAY_LPAR_100TX_FD_CAPS))
2634 || (*speed == SPEED_10
2635 && !(phy_data & NWAY_LPAR_10T_FD_CAPS)))
2636 *duplex = HALF_DUPLEX;
2640 return E1000_SUCCESS;
2644 * e1000_wait_autoneg
2645 * @hw: Struct containing variables accessed by shared code
2647 * Blocks until autoneg completes or times out (~4.5 seconds)
2649 static s32 e1000_wait_autoneg(struct e1000_hw *hw)
2655 e_dbg("Waiting for Auto-Neg to complete.\n");
2657 /* We will wait for autoneg to complete or 4.5 seconds to expire. */
2658 for (i = PHY_AUTO_NEG_TIME; i > 0; i--) {
2659 /* Read the MII Status Register and wait for Auto-Neg
2660 * Complete bit to be set.
2662 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
2665 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
2668 if (phy_data & MII_SR_AUTONEG_COMPLETE) {
2669 return E1000_SUCCESS;
2673 return E1000_SUCCESS;
2677 * e1000_raise_mdi_clk - Raises the Management Data Clock
2678 * @hw: Struct containing variables accessed by shared code
2679 * @ctrl: Device control register's current value
2681 static void e1000_raise_mdi_clk(struct e1000_hw *hw, u32 *ctrl)
2683 /* Raise the clock input to the Management Data Clock (by setting the
2684 * MDC bit), and then delay 10 microseconds.
2686 ew32(CTRL, (*ctrl | E1000_CTRL_MDC));
2687 E1000_WRITE_FLUSH();
2692 * e1000_lower_mdi_clk - Lowers the Management Data Clock
2693 * @hw: Struct containing variables accessed by shared code
2694 * @ctrl: Device control register's current value
2696 static void e1000_lower_mdi_clk(struct e1000_hw *hw, u32 *ctrl)
2698 /* Lower the clock input to the Management Data Clock (by clearing the
2699 * MDC bit), and then delay 10 microseconds.
2701 ew32(CTRL, (*ctrl & ~E1000_CTRL_MDC));
2702 E1000_WRITE_FLUSH();
2707 * e1000_shift_out_mdi_bits - Shifts data bits out to the PHY
2708 * @hw: Struct containing variables accessed by shared code
2709 * @data: Data to send out to the PHY
2710 * @count: Number of bits to shift out
2712 * Bits are shifted out in MSB to LSB order.
2714 static void e1000_shift_out_mdi_bits(struct e1000_hw *hw, u32 data, u16 count)
2719 /* We need to shift "count" number of bits out to the PHY. So, the value
2720 * in the "data" parameter will be shifted out to the PHY one bit at a
2721 * time. In order to do this, "data" must be broken down into bits.
2724 mask <<= (count - 1);
2728 /* Set MDIO_DIR and MDC_DIR direction bits to be used as output pins. */
2729 ctrl |= (E1000_CTRL_MDIO_DIR | E1000_CTRL_MDC_DIR);
2732 /* A "1" is shifted out to the PHY by setting the MDIO bit to
2733 * "1" and then raising and lowering the Management Data Clock.
2734 * A "0" is shifted out to the PHY by setting the MDIO bit to
2735 * "0" and then raising and lowering the clock.
2738 ctrl |= E1000_CTRL_MDIO;
2740 ctrl &= ~E1000_CTRL_MDIO;
2743 E1000_WRITE_FLUSH();
2747 e1000_raise_mdi_clk(hw, &ctrl);
2748 e1000_lower_mdi_clk(hw, &ctrl);
2755 * e1000_shift_in_mdi_bits - Shifts data bits in from the PHY
2756 * @hw: Struct containing variables accessed by shared code
2758 * Bits are shifted in in MSB to LSB order.
2760 static u16 e1000_shift_in_mdi_bits(struct e1000_hw *hw)
2766 /* In order to read a register from the PHY, we need to shift in a total
2767 * of 18 bits from the PHY. The first two bit (turnaround) times are
2768 * used to avoid contention on the MDIO pin when a read operation is
2769 * performed. These two bits are ignored by us and thrown away. Bits are
2770 * "shifted in" by raising the input to the Management Data Clock
2771 * (setting the MDC bit), and then reading the value of the MDIO bit.
2775 /* Clear MDIO_DIR (SWDPIO1) to indicate this bit is to be used as
2778 ctrl &= ~E1000_CTRL_MDIO_DIR;
2779 ctrl &= ~E1000_CTRL_MDIO;
2782 E1000_WRITE_FLUSH();
2784 /* Raise and Lower the clock before reading in the data. This accounts
2785 * for the turnaround bits. The first clock occurred when we clocked out
2786 * the last bit of the Register Address.
2788 e1000_raise_mdi_clk(hw, &ctrl);
2789 e1000_lower_mdi_clk(hw, &ctrl);
2791 for (data = 0, i = 0; i < 16; i++) {
2793 e1000_raise_mdi_clk(hw, &ctrl);
2795 /* Check to see if we shifted in a "1". */
2796 if (ctrl & E1000_CTRL_MDIO)
2798 e1000_lower_mdi_clk(hw, &ctrl);
2801 e1000_raise_mdi_clk(hw, &ctrl);
2802 e1000_lower_mdi_clk(hw, &ctrl);
2809 * e1000_read_phy_reg - read a phy register
2810 * @hw: Struct containing variables accessed by shared code
2811 * @reg_addr: address of the PHY register to read
2813 * Reads the value from a PHY register, if the value is on a specific non zero
2814 * page, sets the page first.
2816 s32 e1000_read_phy_reg(struct e1000_hw *hw, u32 reg_addr, u16 *phy_data)
2819 unsigned long flags;
2821 spin_lock_irqsave(&e1000_phy_lock, flags);
2823 if ((hw->phy_type == e1000_phy_igp) &&
2824 (reg_addr > MAX_PHY_MULTI_PAGE_REG)) {
2825 ret_val = e1000_write_phy_reg_ex(hw, IGP01E1000_PHY_PAGE_SELECT,
2828 spin_unlock_irqrestore(&e1000_phy_lock, flags);
2833 ret_val = e1000_read_phy_reg_ex(hw, MAX_PHY_REG_ADDRESS & reg_addr,
2835 spin_unlock_irqrestore(&e1000_phy_lock, flags);
2840 static s32 e1000_read_phy_reg_ex(struct e1000_hw *hw, u32 reg_addr,
2845 const u32 phy_addr = (hw->mac_type == e1000_ce4100) ? hw->phy_addr : 1;
2847 if (reg_addr > MAX_PHY_REG_ADDRESS) {
2848 e_dbg("PHY Address %d is out of range\n", reg_addr);
2849 return -E1000_ERR_PARAM;
2852 if (hw->mac_type > e1000_82543) {
2853 /* Set up Op-code, Phy Address, and register address in the MDI
2854 * Control register. The MAC will take care of interfacing with
2855 * the PHY to retrieve the desired data.
2857 if (hw->mac_type == e1000_ce4100) {
2858 mdic = ((reg_addr << E1000_MDIC_REG_SHIFT) |
2859 (phy_addr << E1000_MDIC_PHY_SHIFT) |
2860 (INTEL_CE_GBE_MDIC_OP_READ) |
2861 (INTEL_CE_GBE_MDIC_GO));
2863 writel(mdic, E1000_MDIO_CMD);
2865 /* Poll the ready bit to see if the MDI read
2868 for (i = 0; i < 64; i++) {
2870 mdic = readl(E1000_MDIO_CMD);
2871 if (!(mdic & INTEL_CE_GBE_MDIC_GO))
2875 if (mdic & INTEL_CE_GBE_MDIC_GO) {
2876 e_dbg("MDI Read did not complete\n");
2877 return -E1000_ERR_PHY;
2880 mdic = readl(E1000_MDIO_STS);
2881 if (mdic & INTEL_CE_GBE_MDIC_READ_ERROR) {
2882 e_dbg("MDI Read Error\n");
2883 return -E1000_ERR_PHY;
2885 *phy_data = (u16) mdic;
2887 mdic = ((reg_addr << E1000_MDIC_REG_SHIFT) |
2888 (phy_addr << E1000_MDIC_PHY_SHIFT) |
2889 (E1000_MDIC_OP_READ));
2893 /* Poll the ready bit to see if the MDI read
2896 for (i = 0; i < 64; i++) {
2899 if (mdic & E1000_MDIC_READY)
2902 if (!(mdic & E1000_MDIC_READY)) {
2903 e_dbg("MDI Read did not complete\n");
2904 return -E1000_ERR_PHY;
2906 if (mdic & E1000_MDIC_ERROR) {
2907 e_dbg("MDI Error\n");
2908 return -E1000_ERR_PHY;
2910 *phy_data = (u16) mdic;
2913 /* We must first send a preamble through the MDIO pin to signal
2914 * the beginning of an MII instruction. This is done by sending
2915 * 32 consecutive "1" bits.
2917 e1000_shift_out_mdi_bits(hw, PHY_PREAMBLE, PHY_PREAMBLE_SIZE);
2919 /* Now combine the next few fields that are required for a read
2920 * operation. We use this method instead of calling the
2921 * e1000_shift_out_mdi_bits routine five different times. The
2922 * format of a MII read instruction consists of a shift out of
2923 * 14 bits and is defined as follows:
2924 * <Preamble><SOF><Op Code><Phy Addr><Reg Addr>
2925 * followed by a shift in of 18 bits. This first two bits
2926 * shifted in are TurnAround bits used to avoid contention on
2927 * the MDIO pin when a READ operation is performed. These two
2928 * bits are thrown away followed by a shift in of 16 bits which
2929 * contains the desired data.
2931 mdic = ((reg_addr) | (phy_addr << 5) |
2932 (PHY_OP_READ << 10) | (PHY_SOF << 12));
2934 e1000_shift_out_mdi_bits(hw, mdic, 14);
2936 /* Now that we've shifted out the read command to the MII, we
2937 * need to "shift in" the 16-bit value (18 total bits) of the
2938 * requested PHY register address.
2940 *phy_data = e1000_shift_in_mdi_bits(hw);
2942 return E1000_SUCCESS;
2946 * e1000_write_phy_reg - write a phy register
2948 * @hw: Struct containing variables accessed by shared code
2949 * @reg_addr: address of the PHY register to write
2950 * @data: data to write to the PHY
2952 * Writes a value to a PHY register
2954 s32 e1000_write_phy_reg(struct e1000_hw *hw, u32 reg_addr, u16 phy_data)
2957 unsigned long flags;
2959 spin_lock_irqsave(&e1000_phy_lock, flags);
2961 if ((hw->phy_type == e1000_phy_igp) &&
2962 (reg_addr > MAX_PHY_MULTI_PAGE_REG)) {
2963 ret_val = e1000_write_phy_reg_ex(hw, IGP01E1000_PHY_PAGE_SELECT,
2966 spin_unlock_irqrestore(&e1000_phy_lock, flags);
2971 ret_val = e1000_write_phy_reg_ex(hw, MAX_PHY_REG_ADDRESS & reg_addr,
2973 spin_unlock_irqrestore(&e1000_phy_lock, flags);
2978 static s32 e1000_write_phy_reg_ex(struct e1000_hw *hw, u32 reg_addr,
2983 const u32 phy_addr = (hw->mac_type == e1000_ce4100) ? hw->phy_addr : 1;
2985 if (reg_addr > MAX_PHY_REG_ADDRESS) {
2986 e_dbg("PHY Address %d is out of range\n", reg_addr);
2987 return -E1000_ERR_PARAM;
2990 if (hw->mac_type > e1000_82543) {
2991 /* Set up Op-code, Phy Address, register address, and data
2992 * intended for the PHY register in the MDI Control register.
2993 * The MAC will take care of interfacing with the PHY to send
2996 if (hw->mac_type == e1000_ce4100) {
2997 mdic = (((u32) phy_data) |
2998 (reg_addr << E1000_MDIC_REG_SHIFT) |
2999 (phy_addr << E1000_MDIC_PHY_SHIFT) |
3000 (INTEL_CE_GBE_MDIC_OP_WRITE) |
3001 (INTEL_CE_GBE_MDIC_GO));
3003 writel(mdic, E1000_MDIO_CMD);
3005 /* Poll the ready bit to see if the MDI read
3008 for (i = 0; i < 640; i++) {
3010 mdic = readl(E1000_MDIO_CMD);
3011 if (!(mdic & INTEL_CE_GBE_MDIC_GO))
3014 if (mdic & INTEL_CE_GBE_MDIC_GO) {
3015 e_dbg("MDI Write did not complete\n");
3016 return -E1000_ERR_PHY;
3019 mdic = (((u32) phy_data) |
3020 (reg_addr << E1000_MDIC_REG_SHIFT) |
3021 (phy_addr << E1000_MDIC_PHY_SHIFT) |
3022 (E1000_MDIC_OP_WRITE));
3026 /* Poll the ready bit to see if the MDI read
3029 for (i = 0; i < 641; i++) {
3032 if (mdic & E1000_MDIC_READY)
3035 if (!(mdic & E1000_MDIC_READY)) {
3036 e_dbg("MDI Write did not complete\n");
3037 return -E1000_ERR_PHY;
3041 /* We'll need to use the SW defined pins to shift the write
3042 * command out to the PHY. We first send a preamble to the PHY
3043 * to signal the beginning of the MII instruction. This is done
3044 * by sending 32 consecutive "1" bits.
3046 e1000_shift_out_mdi_bits(hw, PHY_PREAMBLE, PHY_PREAMBLE_SIZE);
3048 /* Now combine the remaining required fields that will indicate
3049 * a write operation. We use this method instead of calling the
3050 * e1000_shift_out_mdi_bits routine for each field in the
3051 * command. The format of a MII write instruction is as follows:
3052 * <Preamble><SOF><OpCode><PhyAddr><RegAddr><Turnaround><Data>.
3054 mdic = ((PHY_TURNAROUND) | (reg_addr << 2) | (phy_addr << 7) |
3055 (PHY_OP_WRITE << 12) | (PHY_SOF << 14));
3057 mdic |= (u32) phy_data;
3059 e1000_shift_out_mdi_bits(hw, mdic, 32);
3062 return E1000_SUCCESS;
3066 * e1000_phy_hw_reset - reset the phy, hardware style
3067 * @hw: Struct containing variables accessed by shared code
3069 * Returns the PHY to the power-on reset state
3071 s32 e1000_phy_hw_reset(struct e1000_hw *hw)
3076 e_dbg("Resetting Phy...\n");
3078 if (hw->mac_type > e1000_82543) {
3079 /* Read the device control register and assert the
3080 * E1000_CTRL_PHY_RST bit. Then, take it out of reset.
3081 * For e1000 hardware, we delay for 10ms between the assert
3085 ew32(CTRL, ctrl | E1000_CTRL_PHY_RST);
3086 E1000_WRITE_FLUSH();
3091 E1000_WRITE_FLUSH();
3094 /* Read the Extended Device Control Register, assert the
3095 * PHY_RESET_DIR bit to put the PHY into reset. Then, take it
3098 ctrl_ext = er32(CTRL_EXT);
3099 ctrl_ext |= E1000_CTRL_EXT_SDP4_DIR;
3100 ctrl_ext &= ~E1000_CTRL_EXT_SDP4_DATA;
3101 ew32(CTRL_EXT, ctrl_ext);
3102 E1000_WRITE_FLUSH();
3104 ctrl_ext |= E1000_CTRL_EXT_SDP4_DATA;
3105 ew32(CTRL_EXT, ctrl_ext);
3106 E1000_WRITE_FLUSH();
3110 if ((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_82547)) {
3111 /* Configure activity LED after PHY reset */
3112 led_ctrl = er32(LEDCTL);
3113 led_ctrl &= IGP_ACTIVITY_LED_MASK;
3114 led_ctrl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE);
3115 ew32(LEDCTL, led_ctrl);
3118 /* Wait for FW to finish PHY configuration. */
3119 return e1000_get_phy_cfg_done(hw);
3123 * e1000_phy_reset - reset the phy to commit settings
3124 * @hw: Struct containing variables accessed by shared code
3127 * Sets bit 15 of the MII Control register
3129 s32 e1000_phy_reset(struct e1000_hw *hw)
3134 switch (hw->phy_type) {
3136 ret_val = e1000_phy_hw_reset(hw);
3141 ret_val = e1000_read_phy_reg(hw, PHY_CTRL, &phy_data);
3145 phy_data |= MII_CR_RESET;
3146 ret_val = e1000_write_phy_reg(hw, PHY_CTRL, phy_data);
3154 if (hw->phy_type == e1000_phy_igp)
3155 e1000_phy_init_script(hw);
3157 return E1000_SUCCESS;
3161 * e1000_detect_gig_phy - check the phy type
3162 * @hw: Struct containing variables accessed by shared code
3164 * Probes the expected PHY address for known PHY IDs
3166 static s32 e1000_detect_gig_phy(struct e1000_hw *hw)
3168 s32 phy_init_status, ret_val;
3169 u16 phy_id_high, phy_id_low;
3172 if (hw->phy_id != 0)
3173 return E1000_SUCCESS;
3175 /* Read the PHY ID Registers to identify which PHY is onboard. */
3176 ret_val = e1000_read_phy_reg(hw, PHY_ID1, &phy_id_high);
3180 hw->phy_id = (u32) (phy_id_high << 16);
3182 ret_val = e1000_read_phy_reg(hw, PHY_ID2, &phy_id_low);
3186 hw->phy_id |= (u32) (phy_id_low & PHY_REVISION_MASK);
3187 hw->phy_revision = (u32) phy_id_low & ~PHY_REVISION_MASK;
3189 switch (hw->mac_type) {
3191 if (hw->phy_id == M88E1000_E_PHY_ID)
3195 if (hw->phy_id == M88E1000_I_PHY_ID)
3200 case e1000_82545_rev_3:
3202 case e1000_82546_rev_3:
3203 if (hw->phy_id == M88E1011_I_PHY_ID)
3207 if ((hw->phy_id == RTL8211B_PHY_ID) ||
3208 (hw->phy_id == RTL8201N_PHY_ID) ||
3209 (hw->phy_id == M88E1118_E_PHY_ID))
3213 case e1000_82541_rev_2:
3215 case e1000_82547_rev_2:
3216 if (hw->phy_id == IGP01E1000_I_PHY_ID)
3220 e_dbg("Invalid MAC type %d\n", hw->mac_type);
3221 return -E1000_ERR_CONFIG;
3223 phy_init_status = e1000_set_phy_type(hw);
3225 if ((match) && (phy_init_status == E1000_SUCCESS)) {
3226 e_dbg("PHY ID 0x%X detected\n", hw->phy_id);
3227 return E1000_SUCCESS;
3229 e_dbg("Invalid PHY ID 0x%X\n", hw->phy_id);
3230 return -E1000_ERR_PHY;
3234 * e1000_phy_reset_dsp - reset DSP
3235 * @hw: Struct containing variables accessed by shared code
3237 * Resets the PHY's DSP
3239 static s32 e1000_phy_reset_dsp(struct e1000_hw *hw)
3244 ret_val = e1000_write_phy_reg(hw, 29, 0x001d);
3247 ret_val = e1000_write_phy_reg(hw, 30, 0x00c1);
3250 ret_val = e1000_write_phy_reg(hw, 30, 0x0000);
3253 ret_val = E1000_SUCCESS;
3260 * e1000_phy_igp_get_info - get igp specific registers
3261 * @hw: Struct containing variables accessed by shared code
3262 * @phy_info: PHY information structure
3264 * Get PHY information from various PHY registers for igp PHY only.
3266 static s32 e1000_phy_igp_get_info(struct e1000_hw *hw,
3267 struct e1000_phy_info *phy_info)
3270 u16 phy_data, min_length, max_length, average;
3271 e1000_rev_polarity polarity;
3273 /* The downshift status is checked only once, after link is established,
3274 * and it stored in the hw->speed_downgraded parameter.
3276 phy_info->downshift = (e1000_downshift) hw->speed_downgraded;
3278 /* IGP01E1000 does not need to support it. */
3279 phy_info->extended_10bt_distance = e1000_10bt_ext_dist_enable_normal;
3281 /* IGP01E1000 always correct polarity reversal */
3282 phy_info->polarity_correction = e1000_polarity_reversal_enabled;
3284 /* Check polarity status */
3285 ret_val = e1000_check_polarity(hw, &polarity);
3289 phy_info->cable_polarity = polarity;
3291 ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_STATUS, &phy_data);
3295 phy_info->mdix_mode =
3296 (e1000_auto_x_mode) ((phy_data & IGP01E1000_PSSR_MDIX) >>
3297 IGP01E1000_PSSR_MDIX_SHIFT);
3299 if ((phy_data & IGP01E1000_PSSR_SPEED_MASK) ==
3300 IGP01E1000_PSSR_SPEED_1000MBPS) {
3301 /* Local/Remote Receiver Information are only valid @ 1000
3304 ret_val = e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_data);
3308 phy_info->local_rx = ((phy_data & SR_1000T_LOCAL_RX_STATUS) >>
3309 SR_1000T_LOCAL_RX_STATUS_SHIFT) ?
3310 e1000_1000t_rx_status_ok : e1000_1000t_rx_status_not_ok;
3311 phy_info->remote_rx = ((phy_data & SR_1000T_REMOTE_RX_STATUS) >>
3312 SR_1000T_REMOTE_RX_STATUS_SHIFT) ?
3313 e1000_1000t_rx_status_ok : e1000_1000t_rx_status_not_ok;
3315 /* Get cable length */
3316 ret_val = e1000_get_cable_length(hw, &min_length, &max_length);
3320 /* Translate to old method */
3321 average = (max_length + min_length) / 2;
3323 if (average <= e1000_igp_cable_length_50)
3324 phy_info->cable_length = e1000_cable_length_50;
3325 else if (average <= e1000_igp_cable_length_80)
3326 phy_info->cable_length = e1000_cable_length_50_80;
3327 else if (average <= e1000_igp_cable_length_110)
3328 phy_info->cable_length = e1000_cable_length_80_110;
3329 else if (average <= e1000_igp_cable_length_140)
3330 phy_info->cable_length = e1000_cable_length_110_140;
3332 phy_info->cable_length = e1000_cable_length_140;
3335 return E1000_SUCCESS;
3339 * e1000_phy_m88_get_info - get m88 specific registers
3340 * @hw: Struct containing variables accessed by shared code
3341 * @phy_info: PHY information structure
3343 * Get PHY information from various PHY registers for m88 PHY only.
3345 static s32 e1000_phy_m88_get_info(struct e1000_hw *hw,
3346 struct e1000_phy_info *phy_info)
3350 e1000_rev_polarity polarity;
3352 /* The downshift status is checked only once, after link is established,
3353 * and it stored in the hw->speed_downgraded parameter.
3355 phy_info->downshift = (e1000_downshift) hw->speed_downgraded;
3357 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
3361 phy_info->extended_10bt_distance =
3362 ((phy_data & M88E1000_PSCR_10BT_EXT_DIST_ENABLE) >>
3363 M88E1000_PSCR_10BT_EXT_DIST_ENABLE_SHIFT) ?
3364 e1000_10bt_ext_dist_enable_lower :
3365 e1000_10bt_ext_dist_enable_normal;
3367 phy_info->polarity_correction =
3368 ((phy_data & M88E1000_PSCR_POLARITY_REVERSAL) >>
3369 M88E1000_PSCR_POLARITY_REVERSAL_SHIFT) ?
3370 e1000_polarity_reversal_disabled : e1000_polarity_reversal_enabled;
3372 /* Check polarity status */
3373 ret_val = e1000_check_polarity(hw, &polarity);
3376 phy_info->cable_polarity = polarity;
3378 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS, &phy_data);
3382 phy_info->mdix_mode =
3383 (e1000_auto_x_mode) ((phy_data & M88E1000_PSSR_MDIX) >>
3384 M88E1000_PSSR_MDIX_SHIFT);
3386 if ((phy_data & M88E1000_PSSR_SPEED) == M88E1000_PSSR_1000MBS) {
3387 /* Cable Length Estimation and Local/Remote Receiver Information
3388 * are only valid at 1000 Mbps.
3390 phy_info->cable_length =
3391 (e1000_cable_length) ((phy_data &
3392 M88E1000_PSSR_CABLE_LENGTH) >>
3393 M88E1000_PSSR_CABLE_LENGTH_SHIFT);
3395 ret_val = e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_data);
3399 phy_info->local_rx = ((phy_data & SR_1000T_LOCAL_RX_STATUS) >>
3400 SR_1000T_LOCAL_RX_STATUS_SHIFT) ?
3401 e1000_1000t_rx_status_ok : e1000_1000t_rx_status_not_ok;
3402 phy_info->remote_rx = ((phy_data & SR_1000T_REMOTE_RX_STATUS) >>
3403 SR_1000T_REMOTE_RX_STATUS_SHIFT) ?
3404 e1000_1000t_rx_status_ok : e1000_1000t_rx_status_not_ok;
3408 return E1000_SUCCESS;
3412 * e1000_phy_get_info - request phy info
3413 * @hw: Struct containing variables accessed by shared code
3414 * @phy_info: PHY information structure
3416 * Get PHY information from various PHY registers
3418 s32 e1000_phy_get_info(struct e1000_hw *hw, struct e1000_phy_info *phy_info)
3423 phy_info->cable_length = e1000_cable_length_undefined;
3424 phy_info->extended_10bt_distance = e1000_10bt_ext_dist_enable_undefined;
3425 phy_info->cable_polarity = e1000_rev_polarity_undefined;
3426 phy_info->downshift = e1000_downshift_undefined;
3427 phy_info->polarity_correction = e1000_polarity_reversal_undefined;
3428 phy_info->mdix_mode = e1000_auto_x_mode_undefined;
3429 phy_info->local_rx = e1000_1000t_rx_status_undefined;
3430 phy_info->remote_rx = e1000_1000t_rx_status_undefined;
3432 if (hw->media_type != e1000_media_type_copper) {
3433 e_dbg("PHY info is only valid for copper media\n");
3434 return -E1000_ERR_CONFIG;
3437 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
3441 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
3445 if ((phy_data & MII_SR_LINK_STATUS) != MII_SR_LINK_STATUS) {
3446 e_dbg("PHY info is only valid if link is up\n");
3447 return -E1000_ERR_CONFIG;
3450 if (hw->phy_type == e1000_phy_igp)
3451 return e1000_phy_igp_get_info(hw, phy_info);
3452 else if ((hw->phy_type == e1000_phy_8211) ||
3453 (hw->phy_type == e1000_phy_8201))
3454 return E1000_SUCCESS;
3456 return e1000_phy_m88_get_info(hw, phy_info);
3459 s32 e1000_validate_mdi_setting(struct e1000_hw *hw)
3461 if (!hw->autoneg && (hw->mdix == 0 || hw->mdix == 3)) {
3462 e_dbg("Invalid MDI setting detected\n");
3464 return -E1000_ERR_CONFIG;
3466 return E1000_SUCCESS;
3470 * e1000_init_eeprom_params - initialize sw eeprom vars
3471 * @hw: Struct containing variables accessed by shared code
3473 * Sets up eeprom variables in the hw struct. Must be called after mac_type
3476 s32 e1000_init_eeprom_params(struct e1000_hw *hw)
3478 struct e1000_eeprom_info *eeprom = &hw->eeprom;
3479 u32 eecd = er32(EECD);
3480 s32 ret_val = E1000_SUCCESS;
3483 switch (hw->mac_type) {
3484 case e1000_82542_rev2_0:
3485 case e1000_82542_rev2_1:
3488 eeprom->type = e1000_eeprom_microwire;
3489 eeprom->word_size = 64;
3490 eeprom->opcode_bits = 3;
3491 eeprom->address_bits = 6;
3492 eeprom->delay_usec = 50;
3496 case e1000_82545_rev_3:
3498 case e1000_82546_rev_3:
3499 eeprom->type = e1000_eeprom_microwire;
3500 eeprom->opcode_bits = 3;
3501 eeprom->delay_usec = 50;
3502 if (eecd & E1000_EECD_SIZE) {
3503 eeprom->word_size = 256;
3504 eeprom->address_bits = 8;
3506 eeprom->word_size = 64;
3507 eeprom->address_bits = 6;
3511 case e1000_82541_rev_2:
3513 case e1000_82547_rev_2:
3514 if (eecd & E1000_EECD_TYPE) {
3515 eeprom->type = e1000_eeprom_spi;
3516 eeprom->opcode_bits = 8;
3517 eeprom->delay_usec = 1;
3518 if (eecd & E1000_EECD_ADDR_BITS) {
3519 eeprom->page_size = 32;
3520 eeprom->address_bits = 16;
3522 eeprom->page_size = 8;
3523 eeprom->address_bits = 8;
3526 eeprom->type = e1000_eeprom_microwire;
3527 eeprom->opcode_bits = 3;
3528 eeprom->delay_usec = 50;
3529 if (eecd & E1000_EECD_ADDR_BITS) {
3530 eeprom->word_size = 256;
3531 eeprom->address_bits = 8;
3533 eeprom->word_size = 64;
3534 eeprom->address_bits = 6;
3542 if (eeprom->type == e1000_eeprom_spi) {
3543 /* eeprom_size will be an enum [0..8] that maps to eeprom sizes
3544 * 128B to 32KB (incremented by powers of 2).
3546 /* Set to default value for initial eeprom read. */
3547 eeprom->word_size = 64;
3548 ret_val = e1000_read_eeprom(hw, EEPROM_CFG, 1, &eeprom_size);
3552 (eeprom_size & EEPROM_SIZE_MASK) >> EEPROM_SIZE_SHIFT;
3553 /* 256B eeprom size was not supported in earlier hardware, so we
3554 * bump eeprom_size up one to ensure that "1" (which maps to
3555 * 256B) is never the result used in the shifting logic below.
3560 eeprom->word_size = 1 << (eeprom_size + EEPROM_WORD_SIZE_SHIFT);
3566 * e1000_raise_ee_clk - Raises the EEPROM's clock input.
3567 * @hw: Struct containing variables accessed by shared code
3568 * @eecd: EECD's current value
3570 static void e1000_raise_ee_clk(struct e1000_hw *hw, u32 *eecd)
3572 /* Raise the clock input to the EEPROM (by setting the SK bit), and then
3573 * wait <delay> microseconds.
3575 *eecd = *eecd | E1000_EECD_SK;
3577 E1000_WRITE_FLUSH();
3578 udelay(hw->eeprom.delay_usec);
3582 * e1000_lower_ee_clk - Lowers the EEPROM's clock input.
3583 * @hw: Struct containing variables accessed by shared code
3584 * @eecd: EECD's current value
3586 static void e1000_lower_ee_clk(struct e1000_hw *hw, u32 *eecd)
3588 /* Lower the clock input to the EEPROM (by clearing the SK bit), and
3589 * then wait 50 microseconds.
3591 *eecd = *eecd & ~E1000_EECD_SK;
3593 E1000_WRITE_FLUSH();
3594 udelay(hw->eeprom.delay_usec);
3598 * e1000_shift_out_ee_bits - Shift data bits out to the EEPROM.
3599 * @hw: Struct containing variables accessed by shared code
3600 * @data: data to send to the EEPROM
3601 * @count: number of bits to shift out
3603 static void e1000_shift_out_ee_bits(struct e1000_hw *hw, u16 data, u16 count)
3605 struct e1000_eeprom_info *eeprom = &hw->eeprom;
3609 /* We need to shift "count" bits out to the EEPROM. So, value in the
3610 * "data" parameter will be shifted out to the EEPROM one bit at a time.
3611 * In order to do this, "data" must be broken down into bits.
3613 mask = 0x01 << (count - 1);
3615 if (eeprom->type == e1000_eeprom_microwire) {
3616 eecd &= ~E1000_EECD_DO;
3617 } else if (eeprom->type == e1000_eeprom_spi) {
3618 eecd |= E1000_EECD_DO;
3621 /* A "1" is shifted out to the EEPROM by setting bit "DI" to a
3622 * "1", and then raising and then lowering the clock (the SK bit
3623 * controls the clock input to the EEPROM). A "0" is shifted
3624 * out to the EEPROM by setting "DI" to "0" and then raising and
3625 * then lowering the clock.
3627 eecd &= ~E1000_EECD_DI;
3630 eecd |= E1000_EECD_DI;
3633 E1000_WRITE_FLUSH();
3635 udelay(eeprom->delay_usec);
3637 e1000_raise_ee_clk(hw, &eecd);
3638 e1000_lower_ee_clk(hw, &eecd);
3644 /* We leave the "DI" bit set to "0" when we leave this routine. */
3645 eecd &= ~E1000_EECD_DI;
3650 * e1000_shift_in_ee_bits - Shift data bits in from the EEPROM
3651 * @hw: Struct containing variables accessed by shared code
3652 * @count: number of bits to shift in
3654 static u16 e1000_shift_in_ee_bits(struct e1000_hw *hw, u16 count)
3660 /* In order to read a register from the EEPROM, we need to shift 'count'
3661 * bits in from the EEPROM. Bits are "shifted in" by raising the clock
3662 * input to the EEPROM (setting the SK bit), and then reading the value
3663 * of the "DO" bit. During this "shifting in" process the "DI" bit
3664 * should always be clear.
3669 eecd &= ~(E1000_EECD_DO | E1000_EECD_DI);
3672 for (i = 0; i < count; i++) {
3674 e1000_raise_ee_clk(hw, &eecd);
3678 eecd &= ~(E1000_EECD_DI);
3679 if (eecd & E1000_EECD_DO)
3682 e1000_lower_ee_clk(hw, &eecd);
3689 * e1000_acquire_eeprom - Prepares EEPROM for access
3690 * @hw: Struct containing variables accessed by shared code
3692 * Lowers EEPROM clock. Clears input pin. Sets the chip select pin. This
3693 * function should be called before issuing a command to the EEPROM.
3695 static s32 e1000_acquire_eeprom(struct e1000_hw *hw)
3697 struct e1000_eeprom_info *eeprom = &hw->eeprom;
3702 /* Request EEPROM Access */
3703 if (hw->mac_type > e1000_82544) {
3704 eecd |= E1000_EECD_REQ;
3707 while ((!(eecd & E1000_EECD_GNT)) &&
3708 (i < E1000_EEPROM_GRANT_ATTEMPTS)) {
3713 if (!(eecd & E1000_EECD_GNT)) {
3714 eecd &= ~E1000_EECD_REQ;
3716 e_dbg("Could not acquire EEPROM grant\n");
3717 return -E1000_ERR_EEPROM;
3721 /* Setup EEPROM for Read/Write */
3723 if (eeprom->type == e1000_eeprom_microwire) {
3724 /* Clear SK and DI */
3725 eecd &= ~(E1000_EECD_DI | E1000_EECD_SK);
3729 eecd |= E1000_EECD_CS;
3731 } else if (eeprom->type == e1000_eeprom_spi) {
3732 /* Clear SK and CS */
3733 eecd &= ~(E1000_EECD_CS | E1000_EECD_SK);
3735 E1000_WRITE_FLUSH();
3739 return E1000_SUCCESS;
3743 * e1000_standby_eeprom - Returns EEPROM to a "standby" state
3744 * @hw: Struct containing variables accessed by shared code
3746 static void e1000_standby_eeprom(struct e1000_hw *hw)
3748 struct e1000_eeprom_info *eeprom = &hw->eeprom;
3753 if (eeprom->type == e1000_eeprom_microwire) {
3754 eecd &= ~(E1000_EECD_CS | E1000_EECD_SK);
3756 E1000_WRITE_FLUSH();
3757 udelay(eeprom->delay_usec);
3760 eecd |= E1000_EECD_SK;
3762 E1000_WRITE_FLUSH();
3763 udelay(eeprom->delay_usec);
3766 eecd |= E1000_EECD_CS;
3768 E1000_WRITE_FLUSH();
3769 udelay(eeprom->delay_usec);
3772 eecd &= ~E1000_EECD_SK;
3774 E1000_WRITE_FLUSH();
3775 udelay(eeprom->delay_usec);
3776 } else if (eeprom->type == e1000_eeprom_spi) {
3777 /* Toggle CS to flush commands */
3778 eecd |= E1000_EECD_CS;
3780 E1000_WRITE_FLUSH();
3781 udelay(eeprom->delay_usec);
3782 eecd &= ~E1000_EECD_CS;
3784 E1000_WRITE_FLUSH();
3785 udelay(eeprom->delay_usec);
3790 * e1000_release_eeprom - drop chip select
3791 * @hw: Struct containing variables accessed by shared code
3793 * Terminates a command by inverting the EEPROM's chip select pin
3795 static void e1000_release_eeprom(struct e1000_hw *hw)
3801 if (hw->eeprom.type == e1000_eeprom_spi) {
3802 eecd |= E1000_EECD_CS; /* Pull CS high */
3803 eecd &= ~E1000_EECD_SK; /* Lower SCK */
3806 E1000_WRITE_FLUSH();
3808 udelay(hw->eeprom.delay_usec);
3809 } else if (hw->eeprom.type == e1000_eeprom_microwire) {
3810 /* cleanup eeprom */
3812 /* CS on Microwire is active-high */
3813 eecd &= ~(E1000_EECD_CS | E1000_EECD_DI);
3817 /* Rising edge of clock */
3818 eecd |= E1000_EECD_SK;
3820 E1000_WRITE_FLUSH();
3821 udelay(hw->eeprom.delay_usec);
3823 /* Falling edge of clock */
3824 eecd &= ~E1000_EECD_SK;
3826 E1000_WRITE_FLUSH();
3827 udelay(hw->eeprom.delay_usec);
3830 /* Stop requesting EEPROM access */
3831 if (hw->mac_type > e1000_82544) {
3832 eecd &= ~E1000_EECD_REQ;
3838 * e1000_spi_eeprom_ready - Reads a 16 bit word from the EEPROM.
3839 * @hw: Struct containing variables accessed by shared code
3841 static s32 e1000_spi_eeprom_ready(struct e1000_hw *hw)
3843 u16 retry_count = 0;
3846 /* Read "Status Register" repeatedly until the LSB is cleared. The
3847 * EEPROM will signal that the command has been completed by clearing
3848 * bit 0 of the internal status register. If it's not cleared within
3849 * 5 milliseconds, then error out.
3853 e1000_shift_out_ee_bits(hw, EEPROM_RDSR_OPCODE_SPI,
3854 hw->eeprom.opcode_bits);
3855 spi_stat_reg = (u8) e1000_shift_in_ee_bits(hw, 8);
3856 if (!(spi_stat_reg & EEPROM_STATUS_RDY_SPI))
3862 e1000_standby_eeprom(hw);
3863 } while (retry_count < EEPROM_MAX_RETRY_SPI);
3865 /* ATMEL SPI write time could vary from 0-20mSec on 3.3V devices (and
3866 * only 0-5mSec on 5V devices)
3868 if (retry_count >= EEPROM_MAX_RETRY_SPI) {
3869 e_dbg("SPI EEPROM Status error\n");
3870 return -E1000_ERR_EEPROM;
3873 return E1000_SUCCESS;
3877 * e1000_read_eeprom - Reads a 16 bit word from the EEPROM.
3878 * @hw: Struct containing variables accessed by shared code
3879 * @offset: offset of word in the EEPROM to read
3880 * @data: word read from the EEPROM
3881 * @words: number of words to read
3883 s32 e1000_read_eeprom(struct e1000_hw *hw, u16 offset, u16 words, u16 *data)
3886 spin_lock(&e1000_eeprom_lock);
3887 ret = e1000_do_read_eeprom(hw, offset, words, data);
3888 spin_unlock(&e1000_eeprom_lock);
3892 static s32 e1000_do_read_eeprom(struct e1000_hw *hw, u16 offset, u16 words,
3895 struct e1000_eeprom_info *eeprom = &hw->eeprom;
3898 if (hw->mac_type == e1000_ce4100) {
3899 GBE_CONFIG_FLASH_READ(GBE_CONFIG_BASE_VIRT, offset, words,
3901 return E1000_SUCCESS;
3904 /* If eeprom is not yet detected, do so now */
3905 if (eeprom->word_size == 0)
3906 e1000_init_eeprom_params(hw);
3908 /* A check for invalid values: offset too large, too many words, and
3911 if ((offset >= eeprom->word_size)
3912 || (words > eeprom->word_size - offset) || (words == 0)) {
3913 e_dbg("\"words\" parameter out of bounds. Words = %d,"
3914 "size = %d\n", offset, eeprom->word_size);
3915 return -E1000_ERR_EEPROM;
3918 /* EEPROM's that don't use EERD to read require us to bit-bang the SPI
3919 * directly. In this case, we need to acquire the EEPROM so that
3920 * FW or other port software does not interrupt.
3922 /* Prepare the EEPROM for bit-bang reading */
3923 if (e1000_acquire_eeprom(hw) != E1000_SUCCESS)
3924 return -E1000_ERR_EEPROM;
3926 /* Set up the SPI or Microwire EEPROM for bit-bang reading. We have
3927 * acquired the EEPROM at this point, so any returns should release it
3929 if (eeprom->type == e1000_eeprom_spi) {
3931 u8 read_opcode = EEPROM_READ_OPCODE_SPI;
3933 if (e1000_spi_eeprom_ready(hw)) {
3934 e1000_release_eeprom(hw);
3935 return -E1000_ERR_EEPROM;
3938 e1000_standby_eeprom(hw);
3940 /* Some SPI eeproms use the 8th address bit embedded in the
3943 if ((eeprom->address_bits == 8) && (offset >= 128))
3944 read_opcode |= EEPROM_A8_OPCODE_SPI;
3946 /* Send the READ command (opcode + addr) */
3947 e1000_shift_out_ee_bits(hw, read_opcode, eeprom->opcode_bits);
3948 e1000_shift_out_ee_bits(hw, (u16) (offset * 2),
3949 eeprom->address_bits);
3951 /* Read the data. The address of the eeprom internally
3952 * increments with each byte (spi) being read, saving on the
3953 * overhead of eeprom setup and tear-down. The address counter
3954 * will roll over if reading beyond the size of the eeprom, thus
3955 * allowing the entire memory to be read starting from any
3958 for (i = 0; i < words; i++) {
3959 word_in = e1000_shift_in_ee_bits(hw, 16);
3960 data[i] = (word_in >> 8) | (word_in << 8);
3962 } else if (eeprom->type == e1000_eeprom_microwire) {
3963 for (i = 0; i < words; i++) {
3964 /* Send the READ command (opcode + addr) */
3965 e1000_shift_out_ee_bits(hw,
3966 EEPROM_READ_OPCODE_MICROWIRE,
3967 eeprom->opcode_bits);
3968 e1000_shift_out_ee_bits(hw, (u16) (offset + i),
3969 eeprom->address_bits);
3971 /* Read the data. For microwire, each word requires the
3972 * overhead of eeprom setup and tear-down.
3974 data[i] = e1000_shift_in_ee_bits(hw, 16);
3975 e1000_standby_eeprom(hw);
3979 /* End this read operation */
3980 e1000_release_eeprom(hw);
3982 return E1000_SUCCESS;
3986 * e1000_validate_eeprom_checksum - Verifies that the EEPROM has a valid checksum
3987 * @hw: Struct containing variables accessed by shared code
3989 * Reads the first 64 16 bit words of the EEPROM and sums the values read.
3990 * If the the sum of the 64 16 bit words is 0xBABA, the EEPROM's checksum is
3993 s32 e1000_validate_eeprom_checksum(struct e1000_hw *hw)
3998 for (i = 0; i < (EEPROM_CHECKSUM_REG + 1); i++) {
3999 if (e1000_read_eeprom(hw, i, 1, &eeprom_data) < 0) {
4000 e_dbg("EEPROM Read Error\n");
4001 return -E1000_ERR_EEPROM;
4003 checksum += eeprom_data;
4006 #ifdef CONFIG_PARISC
4007 /* This is a signature and not a checksum on HP c8000 */
4008 if ((hw->subsystem_vendor_id == 0x103C) && (eeprom_data == 0x16d6))
4009 return E1000_SUCCESS;
4012 if (checksum == (u16) EEPROM_SUM)
4013 return E1000_SUCCESS;
4015 e_dbg("EEPROM Checksum Invalid\n");
4016 return -E1000_ERR_EEPROM;
4021 * e1000_update_eeprom_checksum - Calculates/writes the EEPROM checksum
4022 * @hw: Struct containing variables accessed by shared code
4024 * Sums the first 63 16 bit words of the EEPROM. Subtracts the sum from 0xBABA.
4025 * Writes the difference to word offset 63 of the EEPROM.
4027 s32 e1000_update_eeprom_checksum(struct e1000_hw *hw)
4032 for (i = 0; i < EEPROM_CHECKSUM_REG; i++) {
4033 if (e1000_read_eeprom(hw, i, 1, &eeprom_data) < 0) {
4034 e_dbg("EEPROM Read Error\n");
4035 return -E1000_ERR_EEPROM;
4037 checksum += eeprom_data;
4039 checksum = (u16) EEPROM_SUM - checksum;
4040 if (e1000_write_eeprom(hw, EEPROM_CHECKSUM_REG, 1, &checksum) < 0) {
4041 e_dbg("EEPROM Write Error\n");
4042 return -E1000_ERR_EEPROM;
4044 return E1000_SUCCESS;
4048 * e1000_write_eeprom - write words to the different EEPROM types.
4049 * @hw: Struct containing variables accessed by shared code
4050 * @offset: offset within the EEPROM to be written to
4051 * @words: number of words to write
4052 * @data: 16 bit word to be written to the EEPROM
4054 * If e1000_update_eeprom_checksum is not called after this function, the
4055 * EEPROM will most likely contain an invalid checksum.
4057 s32 e1000_write_eeprom(struct e1000_hw *hw, u16 offset, u16 words, u16 *data)
4060 spin_lock(&e1000_eeprom_lock);
4061 ret = e1000_do_write_eeprom(hw, offset, words, data);
4062 spin_unlock(&e1000_eeprom_lock);
4066 static s32 e1000_do_write_eeprom(struct e1000_hw *hw, u16 offset, u16 words,
4069 struct e1000_eeprom_info *eeprom = &hw->eeprom;
4072 if (hw->mac_type == e1000_ce4100) {
4073 GBE_CONFIG_FLASH_WRITE(GBE_CONFIG_BASE_VIRT, offset, words,
4075 return E1000_SUCCESS;
4078 /* If eeprom is not yet detected, do so now */
4079 if (eeprom->word_size == 0)
4080 e1000_init_eeprom_params(hw);
4082 /* A check for invalid values: offset too large, too many words, and
4085 if ((offset >= eeprom->word_size)
4086 || (words > eeprom->word_size - offset) || (words == 0)) {
4087 e_dbg("\"words\" parameter out of bounds\n");
4088 return -E1000_ERR_EEPROM;
4091 /* Prepare the EEPROM for writing */
4092 if (e1000_acquire_eeprom(hw) != E1000_SUCCESS)
4093 return -E1000_ERR_EEPROM;
4095 if (eeprom->type == e1000_eeprom_microwire) {
4096 status = e1000_write_eeprom_microwire(hw, offset, words, data);
4098 status = e1000_write_eeprom_spi(hw, offset, words, data);
4102 /* Done with writing */
4103 e1000_release_eeprom(hw);
4109 * e1000_write_eeprom_spi - Writes a 16 bit word to a given offset in an SPI EEPROM.
4110 * @hw: Struct containing variables accessed by shared code
4111 * @offset: offset within the EEPROM to be written to
4112 * @words: number of words to write
4113 * @data: pointer to array of 8 bit words to be written to the EEPROM
4115 static s32 e1000_write_eeprom_spi(struct e1000_hw *hw, u16 offset, u16 words,
4118 struct e1000_eeprom_info *eeprom = &hw->eeprom;
4121 while (widx < words) {
4122 u8 write_opcode = EEPROM_WRITE_OPCODE_SPI;
4124 if (e1000_spi_eeprom_ready(hw))
4125 return -E1000_ERR_EEPROM;
4127 e1000_standby_eeprom(hw);
4129 /* Send the WRITE ENABLE command (8 bit opcode ) */
4130 e1000_shift_out_ee_bits(hw, EEPROM_WREN_OPCODE_SPI,
4131 eeprom->opcode_bits);
4133 e1000_standby_eeprom(hw);
4135 /* Some SPI eeproms use the 8th address bit embedded in the
4138 if ((eeprom->address_bits == 8) && (offset >= 128))
4139 write_opcode |= EEPROM_A8_OPCODE_SPI;
4141 /* Send the Write command (8-bit opcode + addr) */
4142 e1000_shift_out_ee_bits(hw, write_opcode, eeprom->opcode_bits);
4144 e1000_shift_out_ee_bits(hw, (u16) ((offset + widx) * 2),
4145 eeprom->address_bits);
4149 /* Loop to allow for up to whole page write (32 bytes) of
4152 while (widx < words) {
4153 u16 word_out = data[widx];
4154 word_out = (word_out >> 8) | (word_out << 8);
4155 e1000_shift_out_ee_bits(hw, word_out, 16);
4158 /* Some larger eeprom sizes are capable of a 32-byte
4159 * PAGE WRITE operation, while the smaller eeproms are
4160 * capable of an 8-byte PAGE WRITE operation. Break the
4161 * inner loop to pass new address
4163 if ((((offset + widx) * 2) % eeprom->page_size) == 0) {
4164 e1000_standby_eeprom(hw);
4170 return E1000_SUCCESS;
4174 * e1000_write_eeprom_microwire - Writes a 16 bit word to a given offset in a Microwire EEPROM.
4175 * @hw: Struct containing variables accessed by shared code
4176 * @offset: offset within the EEPROM to be written to
4177 * @words: number of words to write
4178 * @data: pointer to array of 8 bit words to be written to the EEPROM
4180 static s32 e1000_write_eeprom_microwire(struct e1000_hw *hw, u16 offset,
4181 u16 words, u16 *data)
4183 struct e1000_eeprom_info *eeprom = &hw->eeprom;
4185 u16 words_written = 0;
4188 /* Send the write enable command to the EEPROM (3-bit opcode plus
4189 * 6/8-bit dummy address beginning with 11). It's less work to include
4190 * the 11 of the dummy address as part of the opcode than it is to shift
4191 * it over the correct number of bits for the address. This puts the
4192 * EEPROM into write/erase mode.
4194 e1000_shift_out_ee_bits(hw, EEPROM_EWEN_OPCODE_MICROWIRE,
4195 (u16) (eeprom->opcode_bits + 2));
4197 e1000_shift_out_ee_bits(hw, 0, (u16) (eeprom->address_bits - 2));
4199 /* Prepare the EEPROM */
4200 e1000_standby_eeprom(hw);
4202 while (words_written < words) {
4203 /* Send the Write command (3-bit opcode + addr) */
4204 e1000_shift_out_ee_bits(hw, EEPROM_WRITE_OPCODE_MICROWIRE,
4205 eeprom->opcode_bits);
4207 e1000_shift_out_ee_bits(hw, (u16) (offset + words_written),
4208 eeprom->address_bits);
4211 e1000_shift_out_ee_bits(hw, data[words_written], 16);
4213 /* Toggle the CS line. This in effect tells the EEPROM to
4214 * execute the previous command.
4216 e1000_standby_eeprom(hw);
4218 /* Read DO repeatedly until it is high (equal to '1'). The
4219 * EEPROM will signal that the command has been completed by
4220 * raising the DO signal. If DO does not go high in 10
4221 * milliseconds, then error out.
4223 for (i = 0; i < 200; i++) {
4225 if (eecd & E1000_EECD_DO)
4230 e_dbg("EEPROM Write did not complete\n");
4231 return -E1000_ERR_EEPROM;
4234 /* Recover from write */
4235 e1000_standby_eeprom(hw);
4240 /* Send the write disable command to the EEPROM (3-bit opcode plus
4241 * 6/8-bit dummy address beginning with 10). It's less work to include
4242 * the 10 of the dummy address as part of the opcode than it is to shift
4243 * it over the correct number of bits for the address. This takes the
4244 * EEPROM out of write/erase mode.
4246 e1000_shift_out_ee_bits(hw, EEPROM_EWDS_OPCODE_MICROWIRE,
4247 (u16) (eeprom->opcode_bits + 2));
4249 e1000_shift_out_ee_bits(hw, 0, (u16) (eeprom->address_bits - 2));
4251 return E1000_SUCCESS;
4255 * e1000_read_mac_addr - read the adapters MAC from eeprom
4256 * @hw: Struct containing variables accessed by shared code
4258 * Reads the adapter's MAC address from the EEPROM and inverts the LSB for the
4259 * second function of dual function devices
4261 s32 e1000_read_mac_addr(struct e1000_hw *hw)
4266 for (i = 0; i < NODE_ADDRESS_SIZE; i += 2) {
4268 if (e1000_read_eeprom(hw, offset, 1, &eeprom_data) < 0) {
4269 e_dbg("EEPROM Read Error\n");
4270 return -E1000_ERR_EEPROM;
4272 hw->perm_mac_addr[i] = (u8) (eeprom_data & 0x00FF);
4273 hw->perm_mac_addr[i + 1] = (u8) (eeprom_data >> 8);
4276 switch (hw->mac_type) {
4280 case e1000_82546_rev_3:
4281 if (er32(STATUS) & E1000_STATUS_FUNC_1)
4282 hw->perm_mac_addr[5] ^= 0x01;
4286 for (i = 0; i < NODE_ADDRESS_SIZE; i++)
4287 hw->mac_addr[i] = hw->perm_mac_addr[i];
4288 return E1000_SUCCESS;
4292 * e1000_init_rx_addrs - Initializes receive address filters.
4293 * @hw: Struct containing variables accessed by shared code
4295 * Places the MAC address in receive address register 0 and clears the rest
4296 * of the receive address registers. Clears the multicast table. Assumes
4297 * the receiver is in reset when the routine is called.
4299 static void e1000_init_rx_addrs(struct e1000_hw *hw)
4304 /* Setup the receive address. */
4305 e_dbg("Programming MAC Address into RAR[0]\n");
4307 e1000_rar_set(hw, hw->mac_addr, 0);
4309 rar_num = E1000_RAR_ENTRIES;
4311 /* Zero out the other 15 receive addresses. */
4312 e_dbg("Clearing RAR[1-15]\n");
4313 for (i = 1; i < rar_num; i++) {
4314 E1000_WRITE_REG_ARRAY(hw, RA, (i << 1), 0);
4315 E1000_WRITE_FLUSH();
4316 E1000_WRITE_REG_ARRAY(hw, RA, ((i << 1) + 1), 0);
4317 E1000_WRITE_FLUSH();
4322 * e1000_hash_mc_addr - Hashes an address to determine its location in the multicast table
4323 * @hw: Struct containing variables accessed by shared code
4324 * @mc_addr: the multicast address to hash
4326 u32 e1000_hash_mc_addr(struct e1000_hw *hw, u8 *mc_addr)
4330 /* The portion of the address that is used for the hash table is
4331 * determined by the mc_filter_type setting.
4333 switch (hw->mc_filter_type) {
4334 /* [0] [1] [2] [3] [4] [5]
4339 /* [47:36] i.e. 0x563 for above example address */
4340 hash_value = ((mc_addr[4] >> 4) | (((u16) mc_addr[5]) << 4));
4343 /* [46:35] i.e. 0xAC6 for above example address */
4344 hash_value = ((mc_addr[4] >> 3) | (((u16) mc_addr[5]) << 5));
4347 /* [45:34] i.e. 0x5D8 for above example address */
4348 hash_value = ((mc_addr[4] >> 2) | (((u16) mc_addr[5]) << 6));
4351 /* [43:32] i.e. 0x634 for above example address */
4352 hash_value = ((mc_addr[4]) | (((u16) mc_addr[5]) << 8));
4356 hash_value &= 0xFFF;
4361 * e1000_rar_set - Puts an ethernet address into a receive address register.
4362 * @hw: Struct containing variables accessed by shared code
4363 * @addr: Address to put into receive address register
4364 * @index: Receive address register to write
4366 void e1000_rar_set(struct e1000_hw *hw, u8 *addr, u32 index)
4368 u32 rar_low, rar_high;
4370 /* HW expects these in little endian so we reverse the byte order
4371 * from network order (big endian) to little endian
4373 rar_low = ((u32) addr[0] | ((u32) addr[1] << 8) |
4374 ((u32) addr[2] << 16) | ((u32) addr[3] << 24));
4375 rar_high = ((u32) addr[4] | ((u32) addr[5] << 8));
4377 /* Disable Rx and flush all Rx frames before enabling RSS to avoid Rx
4381 * If there are any Rx frames queued up or otherwise present in the HW
4382 * before RSS is enabled, and then we enable RSS, the HW Rx unit will
4383 * hang. To work around this issue, we have to disable receives and
4384 * flush out all Rx frames before we enable RSS. To do so, we modify we
4385 * redirect all Rx traffic to manageability and then reset the HW.
4386 * This flushes away Rx frames, and (since the redirections to
4387 * manageability persists across resets) keeps new ones from coming in
4388 * while we work. Then, we clear the Address Valid AV bit for all MAC
4389 * addresses and undo the re-direction to manageability.
4390 * Now, frames are coming in again, but the MAC won't accept them, so
4391 * far so good. We now proceed to initialize RSS (if necessary) and
4392 * configure the Rx unit. Last, we re-enable the AV bits and continue
4395 switch (hw->mac_type) {
4397 /* Indicate to hardware the Address is Valid. */
4398 rar_high |= E1000_RAH_AV;
4402 E1000_WRITE_REG_ARRAY(hw, RA, (index << 1), rar_low);
4403 E1000_WRITE_FLUSH();
4404 E1000_WRITE_REG_ARRAY(hw, RA, ((index << 1) + 1), rar_high);
4405 E1000_WRITE_FLUSH();
4409 * e1000_write_vfta - Writes a value to the specified offset in the VLAN filter table.
4410 * @hw: Struct containing variables accessed by shared code
4411 * @offset: Offset in VLAN filer table to write
4412 * @value: Value to write into VLAN filter table
4414 void e1000_write_vfta(struct e1000_hw *hw, u32 offset, u32 value)
4418 if ((hw->mac_type == e1000_82544) && ((offset & 0x1) == 1)) {
4419 temp = E1000_READ_REG_ARRAY(hw, VFTA, (offset - 1));
4420 E1000_WRITE_REG_ARRAY(hw, VFTA, offset, value);
4421 E1000_WRITE_FLUSH();
4422 E1000_WRITE_REG_ARRAY(hw, VFTA, (offset - 1), temp);
4423 E1000_WRITE_FLUSH();
4425 E1000_WRITE_REG_ARRAY(hw, VFTA, offset, value);
4426 E1000_WRITE_FLUSH();
4431 * e1000_clear_vfta - Clears the VLAN filer table
4432 * @hw: Struct containing variables accessed by shared code
4434 static void e1000_clear_vfta(struct e1000_hw *hw)
4438 u32 vfta_offset = 0;
4439 u32 vfta_bit_in_reg = 0;
4441 for (offset = 0; offset < E1000_VLAN_FILTER_TBL_SIZE; offset++) {
4442 /* If the offset we want to clear is the same offset of the
4443 * manageability VLAN ID, then clear all bits except that of the
4444 * manageability unit
4446 vfta_value = (offset == vfta_offset) ? vfta_bit_in_reg : 0;
4447 E1000_WRITE_REG_ARRAY(hw, VFTA, offset, vfta_value);
4448 E1000_WRITE_FLUSH();
4452 static s32 e1000_id_led_init(struct e1000_hw *hw)
4455 const u32 ledctl_mask = 0x000000FF;
4456 const u32 ledctl_on = E1000_LEDCTL_MODE_LED_ON;
4457 const u32 ledctl_off = E1000_LEDCTL_MODE_LED_OFF;
4458 u16 eeprom_data, i, temp;
4459 const u16 led_mask = 0x0F;
4461 if (hw->mac_type < e1000_82540) {
4463 return E1000_SUCCESS;
4466 ledctl = er32(LEDCTL);
4467 hw->ledctl_default = ledctl;
4468 hw->ledctl_mode1 = hw->ledctl_default;
4469 hw->ledctl_mode2 = hw->ledctl_default;
4471 if (e1000_read_eeprom(hw, EEPROM_ID_LED_SETTINGS, 1, &eeprom_data) < 0) {
4472 e_dbg("EEPROM Read Error\n");
4473 return -E1000_ERR_EEPROM;
4476 if ((eeprom_data == ID_LED_RESERVED_0000) ||
4477 (eeprom_data == ID_LED_RESERVED_FFFF)) {
4478 eeprom_data = ID_LED_DEFAULT;
4481 for (i = 0; i < 4; i++) {
4482 temp = (eeprom_data >> (i << 2)) & led_mask;
4484 case ID_LED_ON1_DEF2:
4485 case ID_LED_ON1_ON2:
4486 case ID_LED_ON1_OFF2:
4487 hw->ledctl_mode1 &= ~(ledctl_mask << (i << 3));
4488 hw->ledctl_mode1 |= ledctl_on << (i << 3);
4490 case ID_LED_OFF1_DEF2:
4491 case ID_LED_OFF1_ON2:
4492 case ID_LED_OFF1_OFF2:
4493 hw->ledctl_mode1 &= ~(ledctl_mask << (i << 3));
4494 hw->ledctl_mode1 |= ledctl_off << (i << 3);
4501 case ID_LED_DEF1_ON2:
4502 case ID_LED_ON1_ON2:
4503 case ID_LED_OFF1_ON2:
4504 hw->ledctl_mode2 &= ~(ledctl_mask << (i << 3));
4505 hw->ledctl_mode2 |= ledctl_on << (i << 3);
4507 case ID_LED_DEF1_OFF2:
4508 case ID_LED_ON1_OFF2:
4509 case ID_LED_OFF1_OFF2:
4510 hw->ledctl_mode2 &= ~(ledctl_mask << (i << 3));
4511 hw->ledctl_mode2 |= ledctl_off << (i << 3);
4518 return E1000_SUCCESS;
4523 * @hw: Struct containing variables accessed by shared code
4525 * Prepares SW controlable LED for use and saves the current state of the LED.
4527 s32 e1000_setup_led(struct e1000_hw *hw)
4530 s32 ret_val = E1000_SUCCESS;
4532 switch (hw->mac_type) {
4533 case e1000_82542_rev2_0:
4534 case e1000_82542_rev2_1:
4537 /* No setup necessary */
4541 case e1000_82541_rev_2:
4542 case e1000_82547_rev_2:
4543 /* Turn off PHY Smart Power Down (if enabled) */
4544 ret_val = e1000_read_phy_reg(hw, IGP01E1000_GMII_FIFO,
4545 &hw->phy_spd_default);
4548 ret_val = e1000_write_phy_reg(hw, IGP01E1000_GMII_FIFO,
4549 (u16) (hw->phy_spd_default &
4550 ~IGP01E1000_GMII_SPD));
4555 if (hw->media_type == e1000_media_type_fiber) {
4556 ledctl = er32(LEDCTL);
4557 /* Save current LEDCTL settings */
4558 hw->ledctl_default = ledctl;
4560 ledctl &= ~(E1000_LEDCTL_LED0_IVRT |
4561 E1000_LEDCTL_LED0_BLINK |
4562 E1000_LEDCTL_LED0_MODE_MASK);
4563 ledctl |= (E1000_LEDCTL_MODE_LED_OFF <<
4564 E1000_LEDCTL_LED0_MODE_SHIFT);
4565 ew32(LEDCTL, ledctl);
4566 } else if (hw->media_type == e1000_media_type_copper)
4567 ew32(LEDCTL, hw->ledctl_mode1);
4571 return E1000_SUCCESS;
4575 * e1000_cleanup_led - Restores the saved state of the SW controlable LED.
4576 * @hw: Struct containing variables accessed by shared code
4578 s32 e1000_cleanup_led(struct e1000_hw *hw)
4580 s32 ret_val = E1000_SUCCESS;
4582 switch (hw->mac_type) {
4583 case e1000_82542_rev2_0:
4584 case e1000_82542_rev2_1:
4587 /* No cleanup necessary */
4591 case e1000_82541_rev_2:
4592 case e1000_82547_rev_2:
4593 /* Turn on PHY Smart Power Down (if previously enabled) */
4594 ret_val = e1000_write_phy_reg(hw, IGP01E1000_GMII_FIFO,
4595 hw->phy_spd_default);
4600 /* Restore LEDCTL settings */
4601 ew32(LEDCTL, hw->ledctl_default);
4605 return E1000_SUCCESS;
4609 * e1000_led_on - Turns on the software controllable LED
4610 * @hw: Struct containing variables accessed by shared code
4612 s32 e1000_led_on(struct e1000_hw *hw)
4614 u32 ctrl = er32(CTRL);
4616 switch (hw->mac_type) {
4617 case e1000_82542_rev2_0:
4618 case e1000_82542_rev2_1:
4620 /* Set SW Defineable Pin 0 to turn on the LED */
4621 ctrl |= E1000_CTRL_SWDPIN0;
4622 ctrl |= E1000_CTRL_SWDPIO0;
4625 if (hw->media_type == e1000_media_type_fiber) {
4626 /* Set SW Defineable Pin 0 to turn on the LED */
4627 ctrl |= E1000_CTRL_SWDPIN0;
4628 ctrl |= E1000_CTRL_SWDPIO0;
4630 /* Clear SW Defineable Pin 0 to turn on the LED */
4631 ctrl &= ~E1000_CTRL_SWDPIN0;
4632 ctrl |= E1000_CTRL_SWDPIO0;
4636 if (hw->media_type == e1000_media_type_fiber) {
4637 /* Clear SW Defineable Pin 0 to turn on the LED */
4638 ctrl &= ~E1000_CTRL_SWDPIN0;
4639 ctrl |= E1000_CTRL_SWDPIO0;
4640 } else if (hw->media_type == e1000_media_type_copper) {
4641 ew32(LEDCTL, hw->ledctl_mode2);
4642 return E1000_SUCCESS;
4649 return E1000_SUCCESS;
4653 * e1000_led_off - Turns off the software controllable LED
4654 * @hw: Struct containing variables accessed by shared code
4656 s32 e1000_led_off(struct e1000_hw *hw)
4658 u32 ctrl = er32(CTRL);
4660 switch (hw->mac_type) {
4661 case e1000_82542_rev2_0:
4662 case e1000_82542_rev2_1:
4664 /* Clear SW Defineable Pin 0 to turn off the LED */
4665 ctrl &= ~E1000_CTRL_SWDPIN0;
4666 ctrl |= E1000_CTRL_SWDPIO0;
4669 if (hw->media_type == e1000_media_type_fiber) {
4670 /* Clear SW Defineable Pin 0 to turn off the LED */
4671 ctrl &= ~E1000_CTRL_SWDPIN0;
4672 ctrl |= E1000_CTRL_SWDPIO0;
4674 /* Set SW Defineable Pin 0 to turn off the LED */
4675 ctrl |= E1000_CTRL_SWDPIN0;
4676 ctrl |= E1000_CTRL_SWDPIO0;
4680 if (hw->media_type == e1000_media_type_fiber) {
4681 /* Set SW Defineable Pin 0 to turn off the LED */
4682 ctrl |= E1000_CTRL_SWDPIN0;
4683 ctrl |= E1000_CTRL_SWDPIO0;
4684 } else if (hw->media_type == e1000_media_type_copper) {
4685 ew32(LEDCTL, hw->ledctl_mode1);
4686 return E1000_SUCCESS;
4693 return E1000_SUCCESS;
4697 * e1000_clear_hw_cntrs - Clears all hardware statistics counters.
4698 * @hw: Struct containing variables accessed by shared code
4700 static void e1000_clear_hw_cntrs(struct e1000_hw *hw)
4704 temp = er32(CRCERRS);
4705 temp = er32(SYMERRS);
4710 temp = er32(LATECOL);
4715 temp = er32(XONRXC);
4716 temp = er32(XONTXC);
4717 temp = er32(XOFFRXC);
4718 temp = er32(XOFFTXC);
4722 temp = er32(PRC127);
4723 temp = er32(PRC255);
4724 temp = er32(PRC511);
4725 temp = er32(PRC1023);
4726 temp = er32(PRC1522);
4749 temp = er32(PTC127);
4750 temp = er32(PTC255);
4751 temp = er32(PTC511);
4752 temp = er32(PTC1023);
4753 temp = er32(PTC1522);
4758 if (hw->mac_type < e1000_82543)
4761 temp = er32(ALGNERRC);
4762 temp = er32(RXERRC);
4764 temp = er32(CEXTERR);
4766 temp = er32(TSCTFC);
4768 if (hw->mac_type <= e1000_82544)
4771 temp = er32(MGTPRC);
4772 temp = er32(MGTPDC);
4773 temp = er32(MGTPTC);
4777 * e1000_reset_adaptive - Resets Adaptive IFS to its default state.
4778 * @hw: Struct containing variables accessed by shared code
4780 * Call this after e1000_init_hw. You may override the IFS defaults by setting
4781 * hw->ifs_params_forced to true. However, you must initialize hw->
4782 * current_ifs_val, ifs_min_val, ifs_max_val, ifs_step_size, and ifs_ratio
4783 * before calling this function.
4785 void e1000_reset_adaptive(struct e1000_hw *hw)
4787 if (hw->adaptive_ifs) {
4788 if (!hw->ifs_params_forced) {
4789 hw->current_ifs_val = 0;
4790 hw->ifs_min_val = IFS_MIN;
4791 hw->ifs_max_val = IFS_MAX;
4792 hw->ifs_step_size = IFS_STEP;
4793 hw->ifs_ratio = IFS_RATIO;
4795 hw->in_ifs_mode = false;
4798 e_dbg("Not in Adaptive IFS mode!\n");
4803 * e1000_update_adaptive - update adaptive IFS
4804 * @hw: Struct containing variables accessed by shared code
4805 * @tx_packets: Number of transmits since last callback
4806 * @total_collisions: Number of collisions since last callback
4808 * Called during the callback/watchdog routine to update IFS value based on
4809 * the ratio of transmits to collisions.
4811 void e1000_update_adaptive(struct e1000_hw *hw)
4813 if (hw->adaptive_ifs) {
4814 if ((hw->collision_delta *hw->ifs_ratio) > hw->tx_packet_delta) {
4815 if (hw->tx_packet_delta > MIN_NUM_XMITS) {
4816 hw->in_ifs_mode = true;
4817 if (hw->current_ifs_val < hw->ifs_max_val) {
4818 if (hw->current_ifs_val == 0)
4819 hw->current_ifs_val =
4822 hw->current_ifs_val +=
4824 ew32(AIT, hw->current_ifs_val);
4829 && (hw->tx_packet_delta <= MIN_NUM_XMITS)) {
4830 hw->current_ifs_val = 0;
4831 hw->in_ifs_mode = false;
4836 e_dbg("Not in Adaptive IFS mode!\n");
4841 * e1000_tbi_adjust_stats
4842 * @hw: Struct containing variables accessed by shared code
4843 * @frame_len: The length of the frame in question
4844 * @mac_addr: The Ethernet destination address of the frame in question
4846 * Adjusts the statistic counters when a frame is accepted by TBI_ACCEPT
4848 void e1000_tbi_adjust_stats(struct e1000_hw *hw, struct e1000_hw_stats *stats,
4849 u32 frame_len, u8 *mac_addr)
4853 /* First adjust the frame length. */
4855 /* We need to adjust the statistics counters, since the hardware
4856 * counters overcount this packet as a CRC error and undercount
4857 * the packet as a good packet
4859 /* This packet should not be counted as a CRC error. */
4861 /* This packet does count as a Good Packet Received. */
4864 /* Adjust the Good Octets received counters */
4865 carry_bit = 0x80000000 & stats->gorcl;
4866 stats->gorcl += frame_len;
4867 /* If the high bit of Gorcl (the low 32 bits of the Good Octets
4868 * Received Count) was one before the addition,
4869 * AND it is zero after, then we lost the carry out,
4870 * need to add one to Gorch (Good Octets Received Count High).
4871 * This could be simplified if all environments supported
4874 if (carry_bit && ((stats->gorcl & 0x80000000) == 0))
4876 /* Is this a broadcast or multicast? Check broadcast first,
4877 * since the test for a multicast frame will test positive on
4878 * a broadcast frame.
4880 if (is_broadcast_ether_addr(mac_addr))
4881 /* Broadcast packet */
4883 else if (is_multicast_ether_addr(mac_addr))
4884 /* Multicast packet */
4887 if (frame_len == hw->max_frame_size) {
4888 /* In this case, the hardware has overcounted the number of
4895 /* Adjust the bin counters when the extra byte put the frame in the
4896 * wrong bin. Remember that the frame_len was adjusted above.
4898 if (frame_len == 64) {
4901 } else if (frame_len == 127) {
4904 } else if (frame_len == 255) {
4907 } else if (frame_len == 511) {
4910 } else if (frame_len == 1023) {
4913 } else if (frame_len == 1522) {
4919 * e1000_get_bus_info
4920 * @hw: Struct containing variables accessed by shared code
4922 * Gets the current PCI bus type, speed, and width of the hardware
4924 void e1000_get_bus_info(struct e1000_hw *hw)
4928 switch (hw->mac_type) {
4929 case e1000_82542_rev2_0:
4930 case e1000_82542_rev2_1:
4931 hw->bus_type = e1000_bus_type_pci;
4932 hw->bus_speed = e1000_bus_speed_unknown;
4933 hw->bus_width = e1000_bus_width_unknown;
4936 status = er32(STATUS);
4937 hw->bus_type = (status & E1000_STATUS_PCIX_MODE) ?
4938 e1000_bus_type_pcix : e1000_bus_type_pci;
4940 if (hw->device_id == E1000_DEV_ID_82546EB_QUAD_COPPER) {
4941 hw->bus_speed = (hw->bus_type == e1000_bus_type_pci) ?
4942 e1000_bus_speed_66 : e1000_bus_speed_120;
4943 } else if (hw->bus_type == e1000_bus_type_pci) {
4944 hw->bus_speed = (status & E1000_STATUS_PCI66) ?
4945 e1000_bus_speed_66 : e1000_bus_speed_33;
4947 switch (status & E1000_STATUS_PCIX_SPEED) {
4948 case E1000_STATUS_PCIX_SPEED_66:
4949 hw->bus_speed = e1000_bus_speed_66;
4951 case E1000_STATUS_PCIX_SPEED_100:
4952 hw->bus_speed = e1000_bus_speed_100;
4954 case E1000_STATUS_PCIX_SPEED_133:
4955 hw->bus_speed = e1000_bus_speed_133;
4958 hw->bus_speed = e1000_bus_speed_reserved;
4962 hw->bus_width = (status & E1000_STATUS_BUS64) ?
4963 e1000_bus_width_64 : e1000_bus_width_32;
4969 * e1000_write_reg_io
4970 * @hw: Struct containing variables accessed by shared code
4971 * @offset: offset to write to
4972 * @value: value to write
4974 * Writes a value to one of the devices registers using port I/O (as opposed to
4975 * memory mapped I/O). Only 82544 and newer devices support port I/O.
4977 static void e1000_write_reg_io(struct e1000_hw *hw, u32 offset, u32 value)
4979 unsigned long io_addr = hw->io_base;
4980 unsigned long io_data = hw->io_base + 4;
4982 e1000_io_write(hw, io_addr, offset);
4983 e1000_io_write(hw, io_data, value);
4987 * e1000_get_cable_length - Estimates the cable length.
4988 * @hw: Struct containing variables accessed by shared code
4989 * @min_length: The estimated minimum length
4990 * @max_length: The estimated maximum length
4992 * returns: - E1000_ERR_XXX
4995 * This function always returns a ranged length (minimum & maximum).
4996 * So for M88 phy's, this function interprets the one value returned from the
4997 * register to the minimum and maximum range.
4998 * For IGP phy's, the function calculates the range by the AGC registers.
5000 static s32 e1000_get_cable_length(struct e1000_hw *hw, u16 *min_length,
5008 *min_length = *max_length = 0;
5010 /* Use old method for Phy older than IGP */
5011 if (hw->phy_type == e1000_phy_m88) {
5013 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS,
5017 cable_length = (phy_data & M88E1000_PSSR_CABLE_LENGTH) >>
5018 M88E1000_PSSR_CABLE_LENGTH_SHIFT;
5020 /* Convert the enum value to ranged values */
5021 switch (cable_length) {
5022 case e1000_cable_length_50:
5024 *max_length = e1000_igp_cable_length_50;
5026 case e1000_cable_length_50_80:
5027 *min_length = e1000_igp_cable_length_50;
5028 *max_length = e1000_igp_cable_length_80;
5030 case e1000_cable_length_80_110:
5031 *min_length = e1000_igp_cable_length_80;
5032 *max_length = e1000_igp_cable_length_110;
5034 case e1000_cable_length_110_140:
5035 *min_length = e1000_igp_cable_length_110;
5036 *max_length = e1000_igp_cable_length_140;
5038 case e1000_cable_length_140:
5039 *min_length = e1000_igp_cable_length_140;
5040 *max_length = e1000_igp_cable_length_170;
5043 return -E1000_ERR_PHY;
5046 } else if (hw->phy_type == e1000_phy_igp) { /* For IGP PHY */
5048 u16 min_agc_value = IGP01E1000_AGC_LENGTH_TABLE_SIZE;
5049 static const u16 agc_reg_array[IGP01E1000_PHY_CHANNEL_NUM] = {
5050 IGP01E1000_PHY_AGC_A,
5051 IGP01E1000_PHY_AGC_B,
5052 IGP01E1000_PHY_AGC_C,
5053 IGP01E1000_PHY_AGC_D
5055 /* Read the AGC registers for all channels */
5056 for (i = 0; i < IGP01E1000_PHY_CHANNEL_NUM; i++) {
5059 e1000_read_phy_reg(hw, agc_reg_array[i], &phy_data);
5063 cur_agc_value = phy_data >> IGP01E1000_AGC_LENGTH_SHIFT;
5065 /* Value bound check. */
5066 if ((cur_agc_value >=
5067 IGP01E1000_AGC_LENGTH_TABLE_SIZE - 1)
5068 || (cur_agc_value == 0))
5069 return -E1000_ERR_PHY;
5071 agc_value += cur_agc_value;
5073 /* Update minimal AGC value. */
5074 if (min_agc_value > cur_agc_value)
5075 min_agc_value = cur_agc_value;
5078 /* Remove the minimal AGC result for length < 50m */
5080 IGP01E1000_PHY_CHANNEL_NUM * e1000_igp_cable_length_50) {
5081 agc_value -= min_agc_value;
5083 /* Get the average length of the remaining 3 channels */
5084 agc_value /= (IGP01E1000_PHY_CHANNEL_NUM - 1);
5086 /* Get the average length of all the 4 channels. */
5087 agc_value /= IGP01E1000_PHY_CHANNEL_NUM;
5090 /* Set the range of the calculated length. */
5091 *min_length = ((e1000_igp_cable_length_table[agc_value] -
5092 IGP01E1000_AGC_RANGE) > 0) ?
5093 (e1000_igp_cable_length_table[agc_value] -
5094 IGP01E1000_AGC_RANGE) : 0;
5095 *max_length = e1000_igp_cable_length_table[agc_value] +
5096 IGP01E1000_AGC_RANGE;
5099 return E1000_SUCCESS;
5103 * e1000_check_polarity - Check the cable polarity
5104 * @hw: Struct containing variables accessed by shared code
5105 * @polarity: output parameter : 0 - Polarity is not reversed
5106 * 1 - Polarity is reversed.
5108 * returns: - E1000_ERR_XXX
5111 * For phy's older than IGP, this function simply reads the polarity bit in the
5112 * Phy Status register. For IGP phy's, this bit is valid only if link speed is
5113 * 10 Mbps. If the link speed is 100 Mbps there is no polarity so this bit will
5114 * return 0. If the link speed is 1000 Mbps the polarity status is in the
5115 * IGP01E1000_PHY_PCS_INIT_REG.
5117 static s32 e1000_check_polarity(struct e1000_hw *hw,
5118 e1000_rev_polarity *polarity)
5123 if (hw->phy_type == e1000_phy_m88) {
5124 /* return the Polarity bit in the Status register. */
5125 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS,
5129 *polarity = ((phy_data & M88E1000_PSSR_REV_POLARITY) >>
5130 M88E1000_PSSR_REV_POLARITY_SHIFT) ?
5131 e1000_rev_polarity_reversed : e1000_rev_polarity_normal;
5133 } else if (hw->phy_type == e1000_phy_igp) {
5134 /* Read the Status register to check the speed */
5135 ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_STATUS,
5140 /* If speed is 1000 Mbps, must read the
5141 * IGP01E1000_PHY_PCS_INIT_REG to find the polarity status
5143 if ((phy_data & IGP01E1000_PSSR_SPEED_MASK) ==
5144 IGP01E1000_PSSR_SPEED_1000MBPS) {
5146 /* Read the GIG initialization PCS register (0x00B4) */
5148 e1000_read_phy_reg(hw, IGP01E1000_PHY_PCS_INIT_REG,
5153 /* Check the polarity bits */
5154 *polarity = (phy_data & IGP01E1000_PHY_POLARITY_MASK) ?
5155 e1000_rev_polarity_reversed :
5156 e1000_rev_polarity_normal;
5158 /* For 10 Mbps, read the polarity bit in the status
5159 * register. (for 100 Mbps this bit is always 0)
5162 (phy_data & IGP01E1000_PSSR_POLARITY_REVERSED) ?
5163 e1000_rev_polarity_reversed :
5164 e1000_rev_polarity_normal;
5167 return E1000_SUCCESS;
5171 * e1000_check_downshift - Check if Downshift occurred
5172 * @hw: Struct containing variables accessed by shared code
5173 * @downshift: output parameter : 0 - No Downshift occurred.
5174 * 1 - Downshift occurred.
5176 * returns: - E1000_ERR_XXX
5179 * For phy's older than IGP, this function reads the Downshift bit in the Phy
5180 * Specific Status register. For IGP phy's, it reads the Downgrade bit in the
5181 * Link Health register. In IGP this bit is latched high, so the driver must
5182 * read it immediately after link is established.
5184 static s32 e1000_check_downshift(struct e1000_hw *hw)
5189 if (hw->phy_type == e1000_phy_igp) {
5190 ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_LINK_HEALTH,
5195 hw->speed_downgraded =
5196 (phy_data & IGP01E1000_PLHR_SS_DOWNGRADE) ? 1 : 0;
5197 } else if (hw->phy_type == e1000_phy_m88) {
5198 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS,
5203 hw->speed_downgraded = (phy_data & M88E1000_PSSR_DOWNSHIFT) >>
5204 M88E1000_PSSR_DOWNSHIFT_SHIFT;
5207 return E1000_SUCCESS;
5210 static const u16 dsp_reg_array[IGP01E1000_PHY_CHANNEL_NUM] = {
5211 IGP01E1000_PHY_AGC_PARAM_A,
5212 IGP01E1000_PHY_AGC_PARAM_B,
5213 IGP01E1000_PHY_AGC_PARAM_C,
5214 IGP01E1000_PHY_AGC_PARAM_D
5217 static s32 e1000_1000Mb_check_cable_length(struct e1000_hw *hw)
5219 u16 min_length, max_length;
5223 ret_val = e1000_get_cable_length(hw, &min_length, &max_length);
5227 if (hw->dsp_config_state != e1000_dsp_config_enabled)
5230 if (min_length >= e1000_igp_cable_length_50) {
5231 for (i = 0; i < IGP01E1000_PHY_CHANNEL_NUM; i++) {
5232 ret_val = e1000_read_phy_reg(hw, dsp_reg_array[i],
5237 phy_data &= ~IGP01E1000_PHY_EDAC_MU_INDEX;
5239 ret_val = e1000_write_phy_reg(hw, dsp_reg_array[i],
5244 hw->dsp_config_state = e1000_dsp_config_activated;
5246 u16 ffe_idle_err_timeout = FFE_IDLE_ERR_COUNT_TIMEOUT_20;
5249 /* clear previous idle error counts */
5250 ret_val = e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_data);
5254 for (i = 0; i < ffe_idle_err_timeout; i++) {
5256 ret_val = e1000_read_phy_reg(hw, PHY_1000T_STATUS,
5261 idle_errs += (phy_data & SR_1000T_IDLE_ERROR_CNT);
5262 if (idle_errs > SR_1000T_PHY_EXCESSIVE_IDLE_ERR_COUNT) {
5263 hw->ffe_config_state = e1000_ffe_config_active;
5265 ret_val = e1000_write_phy_reg(hw,
5266 IGP01E1000_PHY_DSP_FFE,
5267 IGP01E1000_PHY_DSP_FFE_CM_CP);
5274 ffe_idle_err_timeout =
5275 FFE_IDLE_ERR_COUNT_TIMEOUT_100;
5283 * e1000_config_dsp_after_link_change
5284 * @hw: Struct containing variables accessed by shared code
5285 * @link_up: was link up at the time this was called
5287 * returns: - E1000_ERR_PHY if fail to read/write the PHY
5288 * E1000_SUCCESS at any other case.
5290 * 82541_rev_2 & 82547_rev_2 have the capability to configure the DSP when a
5291 * gigabit link is achieved to improve link quality.
5294 static s32 e1000_config_dsp_after_link_change(struct e1000_hw *hw, bool link_up)
5297 u16 phy_data, phy_saved_data, speed, duplex, i;
5299 if (hw->phy_type != e1000_phy_igp)
5300 return E1000_SUCCESS;
5303 ret_val = e1000_get_speed_and_duplex(hw, &speed, &duplex);
5305 e_dbg("Error getting link speed and duplex\n");
5309 if (speed == SPEED_1000) {
5310 ret_val = e1000_1000Mb_check_cable_length(hw);
5315 if (hw->dsp_config_state == e1000_dsp_config_activated) {
5316 /* Save off the current value of register 0x2F5B to be
5317 * restored at the end of the routines.
5320 e1000_read_phy_reg(hw, 0x2F5B, &phy_saved_data);
5325 /* Disable the PHY transmitter */
5326 ret_val = e1000_write_phy_reg(hw, 0x2F5B, 0x0003);
5333 ret_val = e1000_write_phy_reg(hw, 0x0000,
5334 IGP01E1000_IEEE_FORCE_GIGA);
5337 for (i = 0; i < IGP01E1000_PHY_CHANNEL_NUM; i++) {
5339 e1000_read_phy_reg(hw, dsp_reg_array[i],
5344 phy_data &= ~IGP01E1000_PHY_EDAC_MU_INDEX;
5345 phy_data |= IGP01E1000_PHY_EDAC_SIGN_EXT_9_BITS;
5348 e1000_write_phy_reg(hw, dsp_reg_array[i],
5354 ret_val = e1000_write_phy_reg(hw, 0x0000,
5355 IGP01E1000_IEEE_RESTART_AUTONEG);
5361 /* Now enable the transmitter */
5363 e1000_write_phy_reg(hw, 0x2F5B, phy_saved_data);
5368 hw->dsp_config_state = e1000_dsp_config_enabled;
5371 if (hw->ffe_config_state == e1000_ffe_config_active) {
5372 /* Save off the current value of register 0x2F5B to be
5373 * restored at the end of the routines.
5376 e1000_read_phy_reg(hw, 0x2F5B, &phy_saved_data);
5381 /* Disable the PHY transmitter */
5382 ret_val = e1000_write_phy_reg(hw, 0x2F5B, 0x0003);
5389 ret_val = e1000_write_phy_reg(hw, 0x0000,
5390 IGP01E1000_IEEE_FORCE_GIGA);
5394 e1000_write_phy_reg(hw, IGP01E1000_PHY_DSP_FFE,
5395 IGP01E1000_PHY_DSP_FFE_DEFAULT);
5399 ret_val = e1000_write_phy_reg(hw, 0x0000,
5400 IGP01E1000_IEEE_RESTART_AUTONEG);
5406 /* Now enable the transmitter */
5408 e1000_write_phy_reg(hw, 0x2F5B, phy_saved_data);
5413 hw->ffe_config_state = e1000_ffe_config_enabled;
5416 return E1000_SUCCESS;
5420 * e1000_set_phy_mode - Set PHY to class A mode
5421 * @hw: Struct containing variables accessed by shared code
5423 * Assumes the following operations will follow to enable the new class mode.
5424 * 1. Do a PHY soft reset
5425 * 2. Restart auto-negotiation or force link.
5427 static s32 e1000_set_phy_mode(struct e1000_hw *hw)
5432 if ((hw->mac_type == e1000_82545_rev_3) &&
5433 (hw->media_type == e1000_media_type_copper)) {
5435 e1000_read_eeprom(hw, EEPROM_PHY_CLASS_WORD, 1,
5441 if ((eeprom_data != EEPROM_RESERVED_WORD) &&
5442 (eeprom_data & EEPROM_PHY_CLASS_A)) {
5444 e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT,
5449 e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL,
5454 hw->phy_reset_disable = false;
5458 return E1000_SUCCESS;
5462 * e1000_set_d3_lplu_state - set d3 link power state
5463 * @hw: Struct containing variables accessed by shared code
5464 * @active: true to enable lplu false to disable lplu.
5466 * This function sets the lplu state according to the active flag. When
5467 * activating lplu this function also disables smart speed and vise versa.
5468 * lplu will not be activated unless the device autonegotiation advertisement
5469 * meets standards of either 10 or 10/100 or 10/100/1000 at all duplexes.
5471 * returns: - E1000_ERR_PHY if fail to read/write the PHY
5472 * E1000_SUCCESS at any other case.
5474 static s32 e1000_set_d3_lplu_state(struct e1000_hw *hw, bool active)
5479 if (hw->phy_type != e1000_phy_igp)
5480 return E1000_SUCCESS;
5482 /* During driver activity LPLU should not be used or it will attain link
5483 * from the lowest speeds starting from 10Mbps. The capability is used
5484 * for Dx transitions and states
5486 if (hw->mac_type == e1000_82541_rev_2
5487 || hw->mac_type == e1000_82547_rev_2) {
5489 e1000_read_phy_reg(hw, IGP01E1000_GMII_FIFO, &phy_data);
5495 if (hw->mac_type == e1000_82541_rev_2 ||
5496 hw->mac_type == e1000_82547_rev_2) {
5497 phy_data &= ~IGP01E1000_GMII_FLEX_SPD;
5499 e1000_write_phy_reg(hw, IGP01E1000_GMII_FIFO,
5505 /* LPLU and SmartSpeed are mutually exclusive. LPLU is used
5506 * during Dx states where the power conservation is most
5507 * important. During driver activity we should enable
5508 * SmartSpeed, so performance is maintained.
5510 if (hw->smart_speed == e1000_smart_speed_on) {
5512 e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
5517 phy_data |= IGP01E1000_PSCFR_SMART_SPEED;
5519 e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
5523 } else if (hw->smart_speed == e1000_smart_speed_off) {
5525 e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
5530 phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
5532 e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
5537 } else if ((hw->autoneg_advertised == AUTONEG_ADVERTISE_SPEED_DEFAULT)
5538 || (hw->autoneg_advertised == AUTONEG_ADVERTISE_10_ALL)
5539 || (hw->autoneg_advertised ==
5540 AUTONEG_ADVERTISE_10_100_ALL)) {
5542 if (hw->mac_type == e1000_82541_rev_2 ||
5543 hw->mac_type == e1000_82547_rev_2) {
5544 phy_data |= IGP01E1000_GMII_FLEX_SPD;
5546 e1000_write_phy_reg(hw, IGP01E1000_GMII_FIFO,
5552 /* When LPLU is enabled we should disable SmartSpeed */
5554 e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
5559 phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
5561 e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
5567 return E1000_SUCCESS;
5571 * e1000_set_vco_speed
5572 * @hw: Struct containing variables accessed by shared code
5574 * Change VCO speed register to improve Bit Error Rate performance of SERDES.
5576 static s32 e1000_set_vco_speed(struct e1000_hw *hw)
5579 u16 default_page = 0;
5582 switch (hw->mac_type) {
5583 case e1000_82545_rev_3:
5584 case e1000_82546_rev_3:
5587 return E1000_SUCCESS;
5590 /* Set PHY register 30, page 5, bit 8 to 0 */
5593 e1000_read_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, &default_page);
5597 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0005);
5601 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, &phy_data);
5605 phy_data &= ~M88E1000_PHY_VCO_REG_BIT8;
5606 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, phy_data);
5610 /* Set PHY register 30, page 4, bit 11 to 1 */
5612 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0004);
5616 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, &phy_data);
5620 phy_data |= M88E1000_PHY_VCO_REG_BIT11;
5621 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, phy_data);
5626 e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, default_page);
5630 return E1000_SUCCESS;
5635 * e1000_enable_mng_pass_thru - check for bmc pass through
5636 * @hw: Struct containing variables accessed by shared code
5638 * Verifies the hardware needs to allow ARPs to be processed by the host
5639 * returns: - true/false
5641 u32 e1000_enable_mng_pass_thru(struct e1000_hw *hw)
5645 if (hw->asf_firmware_present) {
5648 if (!(manc & E1000_MANC_RCV_TCO_EN) ||
5649 !(manc & E1000_MANC_EN_MAC_ADDR_FILTER))
5651 if ((manc & E1000_MANC_SMBUS_EN) && !(manc & E1000_MANC_ASF_EN))
5657 static s32 e1000_polarity_reversal_workaround(struct e1000_hw *hw)
5663 /* Polarity reversal workaround for forced 10F/10H links. */
5665 /* Disable the transmitter on the PHY */
5667 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0019);
5670 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, 0xFFFF);
5674 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0000);
5678 /* This loop will early-out if the NO link condition has been met. */
5679 for (i = PHY_FORCE_TIME; i > 0; i--) {
5680 /* Read the MII Status Register and wait for Link Status bit
5684 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
5688 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
5692 if ((mii_status_reg & ~MII_SR_LINK_STATUS) == 0)
5697 /* Recommended delay time after link has been lost */
5700 /* Now we will re-enable th transmitter on the PHY */
5702 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0019);
5706 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, 0xFFF0);
5710 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, 0xFF00);
5714 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, 0x0000);
5718 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0000);
5722 /* This loop will early-out if the link condition has been met. */
5723 for (i = PHY_FORCE_TIME; i > 0; i--) {
5724 /* Read the MII Status Register and wait for Link Status bit
5728 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
5732 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
5736 if (mii_status_reg & MII_SR_LINK_STATUS)
5740 return E1000_SUCCESS;
5744 * e1000_get_auto_rd_done
5745 * @hw: Struct containing variables accessed by shared code
5747 * Check for EEPROM Auto Read bit done.
5748 * returns: - E1000_ERR_RESET if fail to reset MAC
5749 * E1000_SUCCESS at any other case.
5751 static s32 e1000_get_auto_rd_done(struct e1000_hw *hw)
5754 return E1000_SUCCESS;
5758 * e1000_get_phy_cfg_done
5759 * @hw: Struct containing variables accessed by shared code
5761 * Checks if the PHY configuration is done
5762 * returns: - E1000_ERR_RESET if fail to reset MAC
5763 * E1000_SUCCESS at any other case.
5765 static s32 e1000_get_phy_cfg_done(struct e1000_hw *hw)
5768 return E1000_SUCCESS;