1 /*******************************************************************************
4 Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 2 of the License, or (at your option)
11 This program is distributed in the hope that it will be useful, but WITHOUT
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 You should have received a copy of the GNU General Public License along with
17 this program; if not, write to the Free Software Foundation, Inc., 59
18 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 The full GNU General Public License is included in this distribution in the
24 Linux NICS <linux.nics@intel.com>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *******************************************************************************/
30 * Shared functions for accessing and configuring the MAC
35 static int32_t e1000_set_phy_type(struct e1000_hw *hw);
36 static void e1000_phy_init_script(struct e1000_hw *hw);
37 static int32_t e1000_setup_copper_link(struct e1000_hw *hw);
38 static int32_t e1000_setup_fiber_serdes_link(struct e1000_hw *hw);
39 static int32_t e1000_adjust_serdes_amplitude(struct e1000_hw *hw);
40 static int32_t e1000_phy_force_speed_duplex(struct e1000_hw *hw);
41 static int32_t e1000_config_mac_to_phy(struct e1000_hw *hw);
42 static void e1000_raise_mdi_clk(struct e1000_hw *hw, uint32_t *ctrl);
43 static void e1000_lower_mdi_clk(struct e1000_hw *hw, uint32_t *ctrl);
44 static void e1000_shift_out_mdi_bits(struct e1000_hw *hw, uint32_t data,
46 static uint16_t e1000_shift_in_mdi_bits(struct e1000_hw *hw);
47 static int32_t e1000_phy_reset_dsp(struct e1000_hw *hw);
48 static int32_t e1000_write_eeprom_spi(struct e1000_hw *hw, uint16_t offset,
49 uint16_t words, uint16_t *data);
50 static int32_t e1000_write_eeprom_microwire(struct e1000_hw *hw,
51 uint16_t offset, uint16_t words,
53 static int32_t e1000_spi_eeprom_ready(struct e1000_hw *hw);
54 static void e1000_raise_ee_clk(struct e1000_hw *hw, uint32_t *eecd);
55 static void e1000_lower_ee_clk(struct e1000_hw *hw, uint32_t *eecd);
56 static void e1000_shift_out_ee_bits(struct e1000_hw *hw, uint16_t data,
58 static int32_t e1000_write_phy_reg_ex(struct e1000_hw *hw, uint32_t reg_addr,
60 static int32_t e1000_read_phy_reg_ex(struct e1000_hw *hw,uint32_t reg_addr,
62 static uint16_t e1000_shift_in_ee_bits(struct e1000_hw *hw, uint16_t count);
63 static int32_t e1000_acquire_eeprom(struct e1000_hw *hw);
64 static void e1000_release_eeprom(struct e1000_hw *hw);
65 static void e1000_standby_eeprom(struct e1000_hw *hw);
66 static int32_t e1000_set_vco_speed(struct e1000_hw *hw);
67 static int32_t e1000_polarity_reversal_workaround(struct e1000_hw *hw);
68 static int32_t e1000_set_phy_mode(struct e1000_hw *hw);
69 static int32_t e1000_host_if_read_cookie(struct e1000_hw *hw, uint8_t *buffer);
70 static uint8_t e1000_calculate_mng_checksum(char *buffer, uint32_t length);
71 static uint8_t e1000_arc_subsystem_valid(struct e1000_hw *hw);
72 static int32_t e1000_check_downshift(struct e1000_hw *hw);
73 static int32_t e1000_check_polarity(struct e1000_hw *hw, uint16_t *polarity);
74 static void e1000_clear_hw_cntrs(struct e1000_hw *hw);
75 static void e1000_clear_vfta(struct e1000_hw *hw);
76 static int32_t e1000_commit_shadow_ram(struct e1000_hw *hw);
77 static int32_t e1000_config_dsp_after_link_change(struct e1000_hw *hw,
79 static int32_t e1000_config_fc_after_link_up(struct e1000_hw *hw);
80 static int32_t e1000_detect_gig_phy(struct e1000_hw *hw);
81 static int32_t e1000_get_auto_rd_done(struct e1000_hw *hw);
82 static int32_t e1000_get_cable_length(struct e1000_hw *hw,
84 uint16_t *max_length);
85 static int32_t e1000_get_hw_eeprom_semaphore(struct e1000_hw *hw);
86 static int32_t e1000_get_phy_cfg_done(struct e1000_hw *hw);
87 static int32_t e1000_id_led_init(struct e1000_hw * hw);
88 static void e1000_init_rx_addrs(struct e1000_hw *hw);
89 static boolean_t e1000_is_onboard_nvm_eeprom(struct e1000_hw *hw);
90 static int32_t e1000_poll_eerd_eewr_done(struct e1000_hw *hw, int eerd);
91 static void e1000_put_hw_eeprom_semaphore(struct e1000_hw *hw);
92 static int32_t e1000_read_eeprom_eerd(struct e1000_hw *hw, uint16_t offset,
93 uint16_t words, uint16_t *data);
94 static int32_t e1000_set_d0_lplu_state(struct e1000_hw *hw, boolean_t active);
95 static int32_t e1000_set_d3_lplu_state(struct e1000_hw *hw, boolean_t active);
96 static int32_t e1000_wait_autoneg(struct e1000_hw *hw);
98 static void e1000_write_reg_io(struct e1000_hw *hw, uint32_t offset,
101 #define E1000_WRITE_REG_IO(a, reg, val) \
102 e1000_write_reg_io((a), E1000_##reg, val)
104 /* IGP cable length table */
106 uint16_t e1000_igp_cable_length_table[IGP01E1000_AGC_LENGTH_TABLE_SIZE] =
107 { 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
108 5, 10, 10, 10, 10, 10, 10, 10, 20, 20, 20, 20, 20, 25, 25, 25,
109 25, 25, 25, 25, 30, 30, 30, 30, 40, 40, 40, 40, 40, 40, 40, 40,
110 40, 50, 50, 50, 50, 50, 50, 50, 60, 60, 60, 60, 60, 60, 60, 60,
111 60, 70, 70, 70, 70, 70, 70, 80, 80, 80, 80, 80, 80, 90, 90, 90,
112 90, 90, 90, 90, 90, 90, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100,
113 100, 100, 100, 100, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110,
114 110, 110, 110, 110, 110, 110, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120};
117 uint16_t e1000_igp_2_cable_length_table[IGP02E1000_AGC_LENGTH_TABLE_SIZE] =
118 { 0, 0, 0, 0, 0, 0, 0, 0, 3, 5, 8, 11, 13, 16, 18, 21,
119 0, 0, 0, 3, 6, 10, 13, 16, 19, 23, 26, 29, 32, 35, 38, 41,
120 6, 10, 14, 18, 22, 26, 30, 33, 37, 41, 44, 48, 51, 54, 58, 61,
121 21, 26, 31, 35, 40, 44, 49, 53, 57, 61, 65, 68, 72, 75, 79, 82,
122 40, 45, 51, 56, 61, 66, 70, 75, 79, 83, 87, 91, 94, 98, 101, 104,
123 60, 66, 72, 77, 82, 87, 92, 96, 100, 104, 108, 111, 114, 117, 119, 121,
124 83, 89, 95, 100, 105, 109, 113, 116, 119, 122, 124,
125 104, 109, 114, 118, 121, 124};
128 /******************************************************************************
129 * Set the phy type member in the hw struct.
131 * hw - Struct containing variables accessed by shared code
132 *****************************************************************************/
134 e1000_set_phy_type(struct e1000_hw *hw)
136 DEBUGFUNC("e1000_set_phy_type");
138 if(hw->mac_type == e1000_undefined)
139 return -E1000_ERR_PHY_TYPE;
142 case M88E1000_E_PHY_ID:
143 case M88E1000_I_PHY_ID:
144 case M88E1011_I_PHY_ID:
145 case M88E1111_I_PHY_ID:
146 hw->phy_type = e1000_phy_m88;
148 case IGP01E1000_I_PHY_ID:
149 if(hw->mac_type == e1000_82541 ||
150 hw->mac_type == e1000_82541_rev_2 ||
151 hw->mac_type == e1000_82547 ||
152 hw->mac_type == e1000_82547_rev_2) {
153 hw->phy_type = e1000_phy_igp;
158 /* Should never have loaded on this device */
159 hw->phy_type = e1000_phy_undefined;
160 return -E1000_ERR_PHY_TYPE;
163 return E1000_SUCCESS;
166 /******************************************************************************
167 * IGP phy init script - initializes the GbE PHY
169 * hw - Struct containing variables accessed by shared code
170 *****************************************************************************/
172 e1000_phy_init_script(struct e1000_hw *hw)
175 uint16_t phy_saved_data;
177 DEBUGFUNC("e1000_phy_init_script");
179 if(hw->phy_init_script) {
182 /* Save off the current value of register 0x2F5B to be restored at
183 * the end of this routine. */
184 ret_val = e1000_read_phy_reg(hw, 0x2F5B, &phy_saved_data);
186 /* Disabled the PHY transmitter */
187 e1000_write_phy_reg(hw, 0x2F5B, 0x0003);
191 e1000_write_phy_reg(hw,0x0000,0x0140);
195 switch(hw->mac_type) {
198 e1000_write_phy_reg(hw, 0x1F95, 0x0001);
200 e1000_write_phy_reg(hw, 0x1F71, 0xBD21);
202 e1000_write_phy_reg(hw, 0x1F79, 0x0018);
204 e1000_write_phy_reg(hw, 0x1F30, 0x1600);
206 e1000_write_phy_reg(hw, 0x1F31, 0x0014);
208 e1000_write_phy_reg(hw, 0x1F32, 0x161C);
210 e1000_write_phy_reg(hw, 0x1F94, 0x0003);
212 e1000_write_phy_reg(hw, 0x1F96, 0x003F);
214 e1000_write_phy_reg(hw, 0x2010, 0x0008);
217 case e1000_82541_rev_2:
218 case e1000_82547_rev_2:
219 e1000_write_phy_reg(hw, 0x1F73, 0x0099);
225 e1000_write_phy_reg(hw, 0x0000, 0x3300);
229 /* Now enable the transmitter */
230 e1000_write_phy_reg(hw, 0x2F5B, phy_saved_data);
232 if(hw->mac_type == e1000_82547) {
233 uint16_t fused, fine, coarse;
235 /* Move to analog registers page */
236 e1000_read_phy_reg(hw, IGP01E1000_ANALOG_SPARE_FUSE_STATUS, &fused);
238 if(!(fused & IGP01E1000_ANALOG_SPARE_FUSE_ENABLED)) {
239 e1000_read_phy_reg(hw, IGP01E1000_ANALOG_FUSE_STATUS, &fused);
241 fine = fused & IGP01E1000_ANALOG_FUSE_FINE_MASK;
242 coarse = fused & IGP01E1000_ANALOG_FUSE_COARSE_MASK;
244 if(coarse > IGP01E1000_ANALOG_FUSE_COARSE_THRESH) {
245 coarse -= IGP01E1000_ANALOG_FUSE_COARSE_10;
246 fine -= IGP01E1000_ANALOG_FUSE_FINE_1;
247 } else if(coarse == IGP01E1000_ANALOG_FUSE_COARSE_THRESH)
248 fine -= IGP01E1000_ANALOG_FUSE_FINE_10;
250 fused = (fused & IGP01E1000_ANALOG_FUSE_POLY_MASK) |
251 (fine & IGP01E1000_ANALOG_FUSE_FINE_MASK) |
252 (coarse & IGP01E1000_ANALOG_FUSE_COARSE_MASK);
254 e1000_write_phy_reg(hw, IGP01E1000_ANALOG_FUSE_CONTROL, fused);
255 e1000_write_phy_reg(hw, IGP01E1000_ANALOG_FUSE_BYPASS,
256 IGP01E1000_ANALOG_FUSE_ENABLE_SW_CONTROL);
262 /******************************************************************************
263 * Set the mac type member in the hw struct.
265 * hw - Struct containing variables accessed by shared code
266 *****************************************************************************/
268 e1000_set_mac_type(struct e1000_hw *hw)
270 DEBUGFUNC("e1000_set_mac_type");
272 switch (hw->device_id) {
273 case E1000_DEV_ID_82542:
274 switch (hw->revision_id) {
275 case E1000_82542_2_0_REV_ID:
276 hw->mac_type = e1000_82542_rev2_0;
278 case E1000_82542_2_1_REV_ID:
279 hw->mac_type = e1000_82542_rev2_1;
282 /* Invalid 82542 revision ID */
283 return -E1000_ERR_MAC_TYPE;
286 case E1000_DEV_ID_82543GC_FIBER:
287 case E1000_DEV_ID_82543GC_COPPER:
288 hw->mac_type = e1000_82543;
290 case E1000_DEV_ID_82544EI_COPPER:
291 case E1000_DEV_ID_82544EI_FIBER:
292 case E1000_DEV_ID_82544GC_COPPER:
293 case E1000_DEV_ID_82544GC_LOM:
294 hw->mac_type = e1000_82544;
296 case E1000_DEV_ID_82540EM:
297 case E1000_DEV_ID_82540EM_LOM:
298 case E1000_DEV_ID_82540EP:
299 case E1000_DEV_ID_82540EP_LOM:
300 case E1000_DEV_ID_82540EP_LP:
301 hw->mac_type = e1000_82540;
303 case E1000_DEV_ID_82545EM_COPPER:
304 case E1000_DEV_ID_82545EM_FIBER:
305 hw->mac_type = e1000_82545;
307 case E1000_DEV_ID_82545GM_COPPER:
308 case E1000_DEV_ID_82545GM_FIBER:
309 case E1000_DEV_ID_82545GM_SERDES:
310 hw->mac_type = e1000_82545_rev_3;
312 case E1000_DEV_ID_82546EB_COPPER:
313 case E1000_DEV_ID_82546EB_FIBER:
314 case E1000_DEV_ID_82546EB_QUAD_COPPER:
315 hw->mac_type = e1000_82546;
317 case E1000_DEV_ID_82546GB_COPPER:
318 case E1000_DEV_ID_82546GB_FIBER:
319 case E1000_DEV_ID_82546GB_SERDES:
320 case E1000_DEV_ID_82546GB_PCIE:
321 case E1000_DEV_ID_82546GB_QUAD_COPPER:
322 case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3:
323 hw->mac_type = e1000_82546_rev_3;
325 case E1000_DEV_ID_82541EI:
326 case E1000_DEV_ID_82541EI_MOBILE:
327 hw->mac_type = e1000_82541;
329 case E1000_DEV_ID_82541ER:
330 case E1000_DEV_ID_82541GI:
331 case E1000_DEV_ID_82541GI_LF:
332 case E1000_DEV_ID_82541GI_MOBILE:
333 hw->mac_type = e1000_82541_rev_2;
335 case E1000_DEV_ID_82547EI:
336 hw->mac_type = e1000_82547;
338 case E1000_DEV_ID_82547GI:
339 hw->mac_type = e1000_82547_rev_2;
341 case E1000_DEV_ID_82571EB_COPPER:
342 case E1000_DEV_ID_82571EB_FIBER:
343 case E1000_DEV_ID_82571EB_SERDES:
344 hw->mac_type = e1000_82571;
346 case E1000_DEV_ID_82572EI_COPPER:
347 case E1000_DEV_ID_82572EI_FIBER:
348 case E1000_DEV_ID_82572EI_SERDES:
349 hw->mac_type = e1000_82572;
351 case E1000_DEV_ID_82573E:
352 case E1000_DEV_ID_82573E_IAMT:
353 case E1000_DEV_ID_82573L:
354 hw->mac_type = e1000_82573;
357 /* Should never have loaded on this device */
358 return -E1000_ERR_MAC_TYPE;
361 switch(hw->mac_type) {
365 hw->eeprom_semaphore_present = TRUE;
369 case e1000_82541_rev_2:
370 case e1000_82547_rev_2:
371 hw->asf_firmware_present = TRUE;
377 return E1000_SUCCESS;
380 /*****************************************************************************
381 * Set media type and TBI compatibility.
383 * hw - Struct containing variables accessed by shared code
384 * **************************************************************************/
386 e1000_set_media_type(struct e1000_hw *hw)
390 DEBUGFUNC("e1000_set_media_type");
392 if(hw->mac_type != e1000_82543) {
393 /* tbi_compatibility is only valid on 82543 */
394 hw->tbi_compatibility_en = FALSE;
397 switch (hw->device_id) {
398 case E1000_DEV_ID_82545GM_SERDES:
399 case E1000_DEV_ID_82546GB_SERDES:
400 case E1000_DEV_ID_82571EB_SERDES:
401 case E1000_DEV_ID_82572EI_SERDES:
402 hw->media_type = e1000_media_type_internal_serdes;
405 switch (hw->mac_type) {
406 case e1000_82542_rev2_0:
407 case e1000_82542_rev2_1:
408 hw->media_type = e1000_media_type_fiber;
411 /* The STATUS_TBIMODE bit is reserved or reused for the this
414 hw->media_type = e1000_media_type_copper;
417 status = E1000_READ_REG(hw, STATUS);
418 if (status & E1000_STATUS_TBIMODE) {
419 hw->media_type = e1000_media_type_fiber;
420 /* tbi_compatibility not valid on fiber */
421 hw->tbi_compatibility_en = FALSE;
423 hw->media_type = e1000_media_type_copper;
430 /******************************************************************************
431 * Reset the transmit and receive units; mask and clear all interrupts.
433 * hw - Struct containing variables accessed by shared code
434 *****************************************************************************/
436 e1000_reset_hw(struct e1000_hw *hw)
444 uint32_t extcnf_ctrl;
447 DEBUGFUNC("e1000_reset_hw");
449 /* For 82542 (rev 2.0), disable MWI before issuing a device reset */
450 if(hw->mac_type == e1000_82542_rev2_0) {
451 DEBUGOUT("Disabling MWI on 82542 rev 2.0\n");
452 e1000_pci_clear_mwi(hw);
455 if(hw->bus_type == e1000_bus_type_pci_express) {
456 /* Prevent the PCI-E bus from sticking if there is no TLP connection
457 * on the last TLP read/write transaction when MAC is reset.
459 if(e1000_disable_pciex_master(hw) != E1000_SUCCESS) {
460 DEBUGOUT("PCI-E Master disable polling has failed.\n");
464 /* Clear interrupt mask to stop board from generating interrupts */
465 DEBUGOUT("Masking off all interrupts\n");
466 E1000_WRITE_REG(hw, IMC, 0xffffffff);
468 /* Disable the Transmit and Receive units. Then delay to allow
469 * any pending transactions to complete before we hit the MAC with
472 E1000_WRITE_REG(hw, RCTL, 0);
473 E1000_WRITE_REG(hw, TCTL, E1000_TCTL_PSP);
474 E1000_WRITE_FLUSH(hw);
476 /* The tbi_compatibility_on Flag must be cleared when Rctl is cleared. */
477 hw->tbi_compatibility_on = FALSE;
479 /* Delay to allow any outstanding PCI transactions to complete before
480 * resetting the device
484 ctrl = E1000_READ_REG(hw, CTRL);
486 /* Must reset the PHY before resetting the MAC */
487 if((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_82547)) {
488 E1000_WRITE_REG(hw, CTRL, (ctrl | E1000_CTRL_PHY_RST));
492 /* Must acquire the MDIO ownership before MAC reset.
493 * Ownership defaults to firmware after a reset. */
494 if(hw->mac_type == e1000_82573) {
497 extcnf_ctrl = E1000_READ_REG(hw, EXTCNF_CTRL);
498 extcnf_ctrl |= E1000_EXTCNF_CTRL_MDIO_SW_OWNERSHIP;
501 E1000_WRITE_REG(hw, EXTCNF_CTRL, extcnf_ctrl);
502 extcnf_ctrl = E1000_READ_REG(hw, EXTCNF_CTRL);
504 if(extcnf_ctrl & E1000_EXTCNF_CTRL_MDIO_SW_OWNERSHIP)
507 extcnf_ctrl |= E1000_EXTCNF_CTRL_MDIO_SW_OWNERSHIP;
514 /* Issue a global reset to the MAC. This will reset the chip's
515 * transmit, receive, DMA, and link units. It will not effect
516 * the current PCI configuration. The global reset bit is self-
517 * clearing, and should clear within a microsecond.
519 DEBUGOUT("Issuing a global reset to MAC\n");
521 switch(hw->mac_type) {
527 case e1000_82541_rev_2:
528 /* These controllers can't ack the 64-bit write when issuing the
529 * reset, so use IO-mapping as a workaround to issue the reset */
530 E1000_WRITE_REG_IO(hw, CTRL, (ctrl | E1000_CTRL_RST));
532 case e1000_82545_rev_3:
533 case e1000_82546_rev_3:
534 /* Reset is performed on a shadow of the control register */
535 E1000_WRITE_REG(hw, CTRL_DUP, (ctrl | E1000_CTRL_RST));
538 E1000_WRITE_REG(hw, CTRL, (ctrl | E1000_CTRL_RST));
542 /* After MAC reset, force reload of EEPROM to restore power-on settings to
543 * device. Later controllers reload the EEPROM automatically, so just wait
544 * for reload to complete.
546 switch(hw->mac_type) {
547 case e1000_82542_rev2_0:
548 case e1000_82542_rev2_1:
551 /* Wait for reset to complete */
553 ctrl_ext = E1000_READ_REG(hw, CTRL_EXT);
554 ctrl_ext |= E1000_CTRL_EXT_EE_RST;
555 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
556 E1000_WRITE_FLUSH(hw);
557 /* Wait for EEPROM reload */
561 case e1000_82541_rev_2:
563 case e1000_82547_rev_2:
564 /* Wait for EEPROM reload */
568 if (e1000_is_onboard_nvm_eeprom(hw) == FALSE) {
570 ctrl_ext = E1000_READ_REG(hw, CTRL_EXT);
571 ctrl_ext |= E1000_CTRL_EXT_EE_RST;
572 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
573 E1000_WRITE_FLUSH(hw);
578 ret_val = e1000_get_auto_rd_done(hw);
580 /* We don't want to continue accessing MAC registers. */
584 /* Wait for EEPROM reload (it happens automatically) */
589 /* Disable HW ARPs on ASF enabled adapters */
590 if(hw->mac_type >= e1000_82540 && hw->mac_type <= e1000_82547_rev_2) {
591 manc = E1000_READ_REG(hw, MANC);
592 manc &= ~(E1000_MANC_ARP_EN);
593 E1000_WRITE_REG(hw, MANC, manc);
596 if((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_82547)) {
597 e1000_phy_init_script(hw);
599 /* Configure activity LED after PHY reset */
600 led_ctrl = E1000_READ_REG(hw, LEDCTL);
601 led_ctrl &= IGP_ACTIVITY_LED_MASK;
602 led_ctrl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE);
603 E1000_WRITE_REG(hw, LEDCTL, led_ctrl);
606 /* Clear interrupt mask to stop board from generating interrupts */
607 DEBUGOUT("Masking off all interrupts\n");
608 E1000_WRITE_REG(hw, IMC, 0xffffffff);
610 /* Clear any pending interrupt events. */
611 icr = E1000_READ_REG(hw, ICR);
613 /* If MWI was previously enabled, reenable it. */
614 if(hw->mac_type == e1000_82542_rev2_0) {
615 if(hw->pci_cmd_word & CMD_MEM_WRT_INVALIDATE)
616 e1000_pci_set_mwi(hw);
619 return E1000_SUCCESS;
622 /******************************************************************************
623 * Performs basic configuration of the adapter.
625 * hw - Struct containing variables accessed by shared code
627 * Assumes that the controller has previously been reset and is in a
628 * post-reset uninitialized state. Initializes the receive address registers,
629 * multicast table, and VLAN filter table. Calls routines to setup link
630 * configuration and flow control settings. Clears all on-chip counters. Leaves
631 * the transmit and receive units disabled and uninitialized.
632 *****************************************************************************/
634 e1000_init_hw(struct e1000_hw *hw)
639 uint16_t pcix_cmd_word;
640 uint16_t pcix_stat_hi_word;
646 DEBUGFUNC("e1000_init_hw");
648 /* Initialize Identification LED */
649 ret_val = e1000_id_led_init(hw);
651 DEBUGOUT("Error Initializing Identification LED\n");
655 /* Set the media type and TBI compatibility */
656 e1000_set_media_type(hw);
658 /* Disabling VLAN filtering. */
659 DEBUGOUT("Initializing the IEEE VLAN\n");
660 if (hw->mac_type < e1000_82545_rev_3)
661 E1000_WRITE_REG(hw, VET, 0);
662 e1000_clear_vfta(hw);
664 /* For 82542 (rev 2.0), disable MWI and put the receiver into reset */
665 if(hw->mac_type == e1000_82542_rev2_0) {
666 DEBUGOUT("Disabling MWI on 82542 rev 2.0\n");
667 e1000_pci_clear_mwi(hw);
668 E1000_WRITE_REG(hw, RCTL, E1000_RCTL_RST);
669 E1000_WRITE_FLUSH(hw);
673 /* Setup the receive address. This involves initializing all of the Receive
674 * Address Registers (RARs 0 - 15).
676 e1000_init_rx_addrs(hw);
678 /* For 82542 (rev 2.0), take the receiver out of reset and enable MWI */
679 if(hw->mac_type == e1000_82542_rev2_0) {
680 E1000_WRITE_REG(hw, RCTL, 0);
681 E1000_WRITE_FLUSH(hw);
683 if(hw->pci_cmd_word & CMD_MEM_WRT_INVALIDATE)
684 e1000_pci_set_mwi(hw);
687 /* Zero out the Multicast HASH table */
688 DEBUGOUT("Zeroing the MTA\n");
689 mta_size = E1000_MC_TBL_SIZE;
690 for(i = 0; i < mta_size; i++)
691 E1000_WRITE_REG_ARRAY(hw, MTA, i, 0);
693 /* Set the PCI priority bit correctly in the CTRL register. This
694 * determines if the adapter gives priority to receives, or if it
695 * gives equal priority to transmits and receives. Valid only on
696 * 82542 and 82543 silicon.
698 if(hw->dma_fairness && hw->mac_type <= e1000_82543) {
699 ctrl = E1000_READ_REG(hw, CTRL);
700 E1000_WRITE_REG(hw, CTRL, ctrl | E1000_CTRL_PRIOR);
703 switch(hw->mac_type) {
704 case e1000_82545_rev_3:
705 case e1000_82546_rev_3:
708 /* Workaround for PCI-X problem when BIOS sets MMRBC incorrectly. */
709 if(hw->bus_type == e1000_bus_type_pcix) {
710 e1000_read_pci_cfg(hw, PCIX_COMMAND_REGISTER, &pcix_cmd_word);
711 e1000_read_pci_cfg(hw, PCIX_STATUS_REGISTER_HI,
713 cmd_mmrbc = (pcix_cmd_word & PCIX_COMMAND_MMRBC_MASK) >>
714 PCIX_COMMAND_MMRBC_SHIFT;
715 stat_mmrbc = (pcix_stat_hi_word & PCIX_STATUS_HI_MMRBC_MASK) >>
716 PCIX_STATUS_HI_MMRBC_SHIFT;
717 if(stat_mmrbc == PCIX_STATUS_HI_MMRBC_4K)
718 stat_mmrbc = PCIX_STATUS_HI_MMRBC_2K;
719 if(cmd_mmrbc > stat_mmrbc) {
720 pcix_cmd_word &= ~PCIX_COMMAND_MMRBC_MASK;
721 pcix_cmd_word |= stat_mmrbc << PCIX_COMMAND_MMRBC_SHIFT;
722 e1000_write_pci_cfg(hw, PCIX_COMMAND_REGISTER,
729 /* Call a subroutine to configure the link and setup flow control. */
730 ret_val = e1000_setup_link(hw);
732 /* Set the transmit descriptor write-back policy */
733 if(hw->mac_type > e1000_82544) {
734 ctrl = E1000_READ_REG(hw, TXDCTL);
735 ctrl = (ctrl & ~E1000_TXDCTL_WTHRESH) | E1000_TXDCTL_FULL_TX_DESC_WB;
736 switch (hw->mac_type) {
742 ctrl |= E1000_TXDCTL_COUNT_DESC;
745 E1000_WRITE_REG(hw, TXDCTL, ctrl);
748 if (hw->mac_type == e1000_82573) {
749 e1000_enable_tx_pkt_filtering(hw);
752 switch (hw->mac_type) {
757 ctrl = E1000_READ_REG(hw, TXDCTL1);
758 ctrl &= ~E1000_TXDCTL_WTHRESH;
759 ctrl |= E1000_TXDCTL_COUNT_DESC | E1000_TXDCTL_FULL_TX_DESC_WB;
761 E1000_WRITE_REG(hw, TXDCTL1, ctrl);
767 if (hw->mac_type == e1000_82573) {
768 uint32_t gcr = E1000_READ_REG(hw, GCR);
769 gcr |= E1000_GCR_L1_ACT_WITHOUT_L0S_RX;
770 E1000_WRITE_REG(hw, GCR, gcr);
773 /* Clear all of the statistics registers (clear on read). It is
774 * important that we do this after we have tried to establish link
775 * because the symbol error count will increment wildly if there
778 e1000_clear_hw_cntrs(hw);
780 if (hw->device_id == E1000_DEV_ID_82546GB_QUAD_COPPER ||
781 hw->device_id == E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3) {
782 ctrl_ext = E1000_READ_REG(hw, CTRL_EXT);
783 /* Relaxed ordering must be disabled to avoid a parity
784 * error crash in a PCI slot. */
785 ctrl_ext |= E1000_CTRL_EXT_RO_DIS;
786 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
792 /******************************************************************************
793 * Adjust SERDES output amplitude based on EEPROM setting.
795 * hw - Struct containing variables accessed by shared code.
796 *****************************************************************************/
798 e1000_adjust_serdes_amplitude(struct e1000_hw *hw)
800 uint16_t eeprom_data;
803 DEBUGFUNC("e1000_adjust_serdes_amplitude");
805 if(hw->media_type != e1000_media_type_internal_serdes)
806 return E1000_SUCCESS;
808 switch(hw->mac_type) {
809 case e1000_82545_rev_3:
810 case e1000_82546_rev_3:
813 return E1000_SUCCESS;
816 ret_val = e1000_read_eeprom(hw, EEPROM_SERDES_AMPLITUDE, 1, &eeprom_data);
821 if(eeprom_data != EEPROM_RESERVED_WORD) {
822 /* Adjust SERDES output amplitude only. */
823 eeprom_data &= EEPROM_SERDES_AMPLITUDE_MASK;
824 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_EXT_CTRL, eeprom_data);
829 return E1000_SUCCESS;
832 /******************************************************************************
833 * Configures flow control and link settings.
835 * hw - Struct containing variables accessed by shared code
837 * Determines which flow control settings to use. Calls the apropriate media-
838 * specific link configuration function. Configures the flow control settings.
839 * Assuming the adapter has a valid link partner, a valid link should be
840 * established. Assumes the hardware has previously been reset and the
841 * transmitter and receiver are not enabled.
842 *****************************************************************************/
844 e1000_setup_link(struct e1000_hw *hw)
848 uint16_t eeprom_data;
850 DEBUGFUNC("e1000_setup_link");
852 /* In the case of the phy reset being blocked, we already have a link.
853 * We do not have to set it up again. */
854 if (e1000_check_phy_reset_block(hw))
855 return E1000_SUCCESS;
857 /* Read and store word 0x0F of the EEPROM. This word contains bits
858 * that determine the hardware's default PAUSE (flow control) mode,
859 * a bit that determines whether the HW defaults to enabling or
860 * disabling auto-negotiation, and the direction of the
861 * SW defined pins. If there is no SW over-ride of the flow
862 * control setting, then the variable hw->fc will
863 * be initialized based on a value in the EEPROM.
865 if (hw->fc == e1000_fc_default) {
866 switch (hw->mac_type) {
868 hw->fc = e1000_fc_full;
871 ret_val = e1000_read_eeprom(hw, EEPROM_INIT_CONTROL2_REG,
874 DEBUGOUT("EEPROM Read Error\n");
875 return -E1000_ERR_EEPROM;
877 if ((eeprom_data & EEPROM_WORD0F_PAUSE_MASK) == 0)
878 hw->fc = e1000_fc_none;
879 else if ((eeprom_data & EEPROM_WORD0F_PAUSE_MASK) ==
880 EEPROM_WORD0F_ASM_DIR)
881 hw->fc = e1000_fc_tx_pause;
883 hw->fc = e1000_fc_full;
888 /* We want to save off the original Flow Control configuration just
889 * in case we get disconnected and then reconnected into a different
890 * hub or switch with different Flow Control capabilities.
892 if(hw->mac_type == e1000_82542_rev2_0)
893 hw->fc &= (~e1000_fc_tx_pause);
895 if((hw->mac_type < e1000_82543) && (hw->report_tx_early == 1))
896 hw->fc &= (~e1000_fc_rx_pause);
898 hw->original_fc = hw->fc;
900 DEBUGOUT1("After fix-ups FlowControl is now = %x\n", hw->fc);
902 /* Take the 4 bits from EEPROM word 0x0F that determine the initial
903 * polarity value for the SW controlled pins, and setup the
904 * Extended Device Control reg with that info.
905 * This is needed because one of the SW controlled pins is used for
906 * signal detection. So this should be done before e1000_setup_pcs_link()
907 * or e1000_phy_setup() is called.
909 if(hw->mac_type == e1000_82543) {
910 ctrl_ext = ((eeprom_data & EEPROM_WORD0F_SWPDIO_EXT) <<
912 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
915 /* Call the necessary subroutine to configure the link. */
916 ret_val = (hw->media_type == e1000_media_type_copper) ?
917 e1000_setup_copper_link(hw) :
918 e1000_setup_fiber_serdes_link(hw);
920 /* Initialize the flow control address, type, and PAUSE timer
921 * registers to their default values. This is done even if flow
922 * control is disabled, because it does not hurt anything to
923 * initialize these registers.
925 DEBUGOUT("Initializing the Flow Control address, type and timer regs\n");
927 E1000_WRITE_REG(hw, FCAL, FLOW_CONTROL_ADDRESS_LOW);
928 E1000_WRITE_REG(hw, FCAH, FLOW_CONTROL_ADDRESS_HIGH);
929 E1000_WRITE_REG(hw, FCT, FLOW_CONTROL_TYPE);
931 E1000_WRITE_REG(hw, FCTTV, hw->fc_pause_time);
933 /* Set the flow control receive threshold registers. Normally,
934 * these registers will be set to a default threshold that may be
935 * adjusted later by the driver's runtime code. However, if the
936 * ability to transmit pause frames in not enabled, then these
937 * registers will be set to 0.
939 if(!(hw->fc & e1000_fc_tx_pause)) {
940 E1000_WRITE_REG(hw, FCRTL, 0);
941 E1000_WRITE_REG(hw, FCRTH, 0);
943 /* We need to set up the Receive Threshold high and low water marks
944 * as well as (optionally) enabling the transmission of XON frames.
946 if(hw->fc_send_xon) {
947 E1000_WRITE_REG(hw, FCRTL, (hw->fc_low_water | E1000_FCRTL_XONE));
948 E1000_WRITE_REG(hw, FCRTH, hw->fc_high_water);
950 E1000_WRITE_REG(hw, FCRTL, hw->fc_low_water);
951 E1000_WRITE_REG(hw, FCRTH, hw->fc_high_water);
957 /******************************************************************************
958 * Sets up link for a fiber based or serdes based adapter
960 * hw - Struct containing variables accessed by shared code
962 * Manipulates Physical Coding Sublayer functions in order to configure
963 * link. Assumes the hardware has been previously reset and the transmitter
964 * and receiver are not enabled.
965 *****************************************************************************/
967 e1000_setup_fiber_serdes_link(struct e1000_hw *hw)
976 DEBUGFUNC("e1000_setup_fiber_serdes_link");
978 /* On 82571 and 82572 Fiber connections, SerDes loopback mode persists
979 * until explicitly turned off or a power cycle is performed. A read to
980 * the register does not indicate its status. Therefore, we ensure
981 * loopback mode is disabled during initialization.
983 if (hw->mac_type == e1000_82571 || hw->mac_type == e1000_82572)
984 E1000_WRITE_REG(hw, SCTL, E1000_DISABLE_SERDES_LOOPBACK);
986 /* On adapters with a MAC newer than 82544, SW Defineable pin 1 will be
987 * set when the optics detect a signal. On older adapters, it will be
988 * cleared when there is a signal. This applies to fiber media only.
989 * If we're on serdes media, adjust the output amplitude to value set in
992 ctrl = E1000_READ_REG(hw, CTRL);
993 if(hw->media_type == e1000_media_type_fiber)
994 signal = (hw->mac_type > e1000_82544) ? E1000_CTRL_SWDPIN1 : 0;
996 ret_val = e1000_adjust_serdes_amplitude(hw);
1000 /* Take the link out of reset */
1001 ctrl &= ~(E1000_CTRL_LRST);
1003 /* Adjust VCO speed to improve BER performance */
1004 ret_val = e1000_set_vco_speed(hw);
1008 e1000_config_collision_dist(hw);
1010 /* Check for a software override of the flow control settings, and setup
1011 * the device accordingly. If auto-negotiation is enabled, then software
1012 * will have to set the "PAUSE" bits to the correct value in the Tranmsit
1013 * Config Word Register (TXCW) and re-start auto-negotiation. However, if
1014 * auto-negotiation is disabled, then software will have to manually
1015 * configure the two flow control enable bits in the CTRL register.
1017 * The possible values of the "fc" parameter are:
1018 * 0: Flow control is completely disabled
1019 * 1: Rx flow control is enabled (we can receive pause frames, but
1020 * not send pause frames).
1021 * 2: Tx flow control is enabled (we can send pause frames but we do
1022 * not support receiving pause frames).
1023 * 3: Both Rx and TX flow control (symmetric) are enabled.
1027 /* Flow control is completely disabled by a software over-ride. */
1028 txcw = (E1000_TXCW_ANE | E1000_TXCW_FD);
1030 case e1000_fc_rx_pause:
1031 /* RX Flow control is enabled and TX Flow control is disabled by a
1032 * software over-ride. Since there really isn't a way to advertise
1033 * that we are capable of RX Pause ONLY, we will advertise that we
1034 * support both symmetric and asymmetric RX PAUSE. Later, we will
1035 * disable the adapter's ability to send PAUSE frames.
1037 txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_PAUSE_MASK);
1039 case e1000_fc_tx_pause:
1040 /* TX Flow control is enabled, and RX Flow control is disabled, by a
1041 * software over-ride.
1043 txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_ASM_DIR);
1046 /* Flow control (both RX and TX) is enabled by a software over-ride. */
1047 txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_PAUSE_MASK);
1050 DEBUGOUT("Flow control param set incorrectly\n");
1051 return -E1000_ERR_CONFIG;
1055 /* Since auto-negotiation is enabled, take the link out of reset (the link
1056 * will be in reset, because we previously reset the chip). This will
1057 * restart auto-negotiation. If auto-neogtiation is successful then the
1058 * link-up status bit will be set and the flow control enable bits (RFCE
1059 * and TFCE) will be set according to their negotiated value.
1061 DEBUGOUT("Auto-negotiation enabled\n");
1063 E1000_WRITE_REG(hw, TXCW, txcw);
1064 E1000_WRITE_REG(hw, CTRL, ctrl);
1065 E1000_WRITE_FLUSH(hw);
1070 /* If we have a signal (the cable is plugged in) then poll for a "Link-Up"
1071 * indication in the Device Status Register. Time-out if a link isn't
1072 * seen in 500 milliseconds seconds (Auto-negotiation should complete in
1073 * less than 500 milliseconds even if the other end is doing it in SW).
1074 * For internal serdes, we just assume a signal is present, then poll.
1076 if(hw->media_type == e1000_media_type_internal_serdes ||
1077 (E1000_READ_REG(hw, CTRL) & E1000_CTRL_SWDPIN1) == signal) {
1078 DEBUGOUT("Looking for Link\n");
1079 for(i = 0; i < (LINK_UP_TIMEOUT / 10); i++) {
1081 status = E1000_READ_REG(hw, STATUS);
1082 if(status & E1000_STATUS_LU) break;
1084 if(i == (LINK_UP_TIMEOUT / 10)) {
1085 DEBUGOUT("Never got a valid link from auto-neg!!!\n");
1086 hw->autoneg_failed = 1;
1087 /* AutoNeg failed to achieve a link, so we'll call
1088 * e1000_check_for_link. This routine will force the link up if
1089 * we detect a signal. This will allow us to communicate with
1090 * non-autonegotiating link partners.
1092 ret_val = e1000_check_for_link(hw);
1094 DEBUGOUT("Error while checking for link\n");
1097 hw->autoneg_failed = 0;
1099 hw->autoneg_failed = 0;
1100 DEBUGOUT("Valid Link Found\n");
1103 DEBUGOUT("No Signal Detected\n");
1105 return E1000_SUCCESS;
1108 /******************************************************************************
1109 * Make sure we have a valid PHY and change PHY mode before link setup.
1111 * hw - Struct containing variables accessed by shared code
1112 ******************************************************************************/
1114 e1000_copper_link_preconfig(struct e1000_hw *hw)
1120 DEBUGFUNC("e1000_copper_link_preconfig");
1122 ctrl = E1000_READ_REG(hw, CTRL);
1123 /* With 82543, we need to force speed and duplex on the MAC equal to what
1124 * the PHY speed and duplex configuration is. In addition, we need to
1125 * perform a hardware reset on the PHY to take it out of reset.
1127 if(hw->mac_type > e1000_82543) {
1128 ctrl |= E1000_CTRL_SLU;
1129 ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
1130 E1000_WRITE_REG(hw, CTRL, ctrl);
1132 ctrl |= (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX | E1000_CTRL_SLU);
1133 E1000_WRITE_REG(hw, CTRL, ctrl);
1134 ret_val = e1000_phy_hw_reset(hw);
1139 /* Make sure we have a valid PHY */
1140 ret_val = e1000_detect_gig_phy(hw);
1142 DEBUGOUT("Error, did not detect valid phy.\n");
1145 DEBUGOUT1("Phy ID = %x \n", hw->phy_id);
1147 /* Set PHY to class A mode (if necessary) */
1148 ret_val = e1000_set_phy_mode(hw);
1152 if((hw->mac_type == e1000_82545_rev_3) ||
1153 (hw->mac_type == e1000_82546_rev_3)) {
1154 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
1155 phy_data |= 0x00000008;
1156 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data);
1159 if(hw->mac_type <= e1000_82543 ||
1160 hw->mac_type == e1000_82541 || hw->mac_type == e1000_82547 ||
1161 hw->mac_type == e1000_82541_rev_2 || hw->mac_type == e1000_82547_rev_2)
1162 hw->phy_reset_disable = FALSE;
1164 return E1000_SUCCESS;
1168 /********************************************************************
1169 * Copper link setup for e1000_phy_igp series.
1171 * hw - Struct containing variables accessed by shared code
1172 *********************************************************************/
1174 e1000_copper_link_igp_setup(struct e1000_hw *hw)
1180 DEBUGFUNC("e1000_copper_link_igp_setup");
1182 if (hw->phy_reset_disable)
1183 return E1000_SUCCESS;
1185 ret_val = e1000_phy_reset(hw);
1187 DEBUGOUT("Error Resetting the PHY\n");
1191 /* Wait 10ms for MAC to configure PHY from eeprom settings */
1194 /* Configure activity LED after PHY reset */
1195 led_ctrl = E1000_READ_REG(hw, LEDCTL);
1196 led_ctrl &= IGP_ACTIVITY_LED_MASK;
1197 led_ctrl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE);
1198 E1000_WRITE_REG(hw, LEDCTL, led_ctrl);
1200 /* disable lplu d3 during driver init */
1201 ret_val = e1000_set_d3_lplu_state(hw, FALSE);
1203 DEBUGOUT("Error Disabling LPLU D3\n");
1207 /* disable lplu d0 during driver init */
1208 ret_val = e1000_set_d0_lplu_state(hw, FALSE);
1210 DEBUGOUT("Error Disabling LPLU D0\n");
1213 /* Configure mdi-mdix settings */
1214 ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, &phy_data);
1218 if ((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_82547)) {
1219 hw->dsp_config_state = e1000_dsp_config_disabled;
1220 /* Force MDI for earlier revs of the IGP PHY */
1221 phy_data &= ~(IGP01E1000_PSCR_AUTO_MDIX | IGP01E1000_PSCR_FORCE_MDI_MDIX);
1225 hw->dsp_config_state = e1000_dsp_config_enabled;
1226 phy_data &= ~IGP01E1000_PSCR_AUTO_MDIX;
1230 phy_data &= ~IGP01E1000_PSCR_FORCE_MDI_MDIX;
1233 phy_data |= IGP01E1000_PSCR_FORCE_MDI_MDIX;
1237 phy_data |= IGP01E1000_PSCR_AUTO_MDIX;
1241 ret_val = e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, phy_data);
1245 /* set auto-master slave resolution settings */
1247 e1000_ms_type phy_ms_setting = hw->master_slave;
1249 if(hw->ffe_config_state == e1000_ffe_config_active)
1250 hw->ffe_config_state = e1000_ffe_config_enabled;
1252 if(hw->dsp_config_state == e1000_dsp_config_activated)
1253 hw->dsp_config_state = e1000_dsp_config_enabled;
1255 /* when autonegotiation advertisment is only 1000Mbps then we
1256 * should disable SmartSpeed and enable Auto MasterSlave
1257 * resolution as hardware default. */
1258 if(hw->autoneg_advertised == ADVERTISE_1000_FULL) {
1259 /* Disable SmartSpeed */
1260 ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, &phy_data);
1263 phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
1264 ret_val = e1000_write_phy_reg(hw,
1265 IGP01E1000_PHY_PORT_CONFIG,
1269 /* Set auto Master/Slave resolution process */
1270 ret_val = e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_data);
1273 phy_data &= ~CR_1000T_MS_ENABLE;
1274 ret_val = e1000_write_phy_reg(hw, PHY_1000T_CTRL, phy_data);
1279 ret_val = e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_data);
1283 /* load defaults for future use */
1284 hw->original_master_slave = (phy_data & CR_1000T_MS_ENABLE) ?
1285 ((phy_data & CR_1000T_MS_VALUE) ?
1286 e1000_ms_force_master :
1287 e1000_ms_force_slave) :
1290 switch (phy_ms_setting) {
1291 case e1000_ms_force_master:
1292 phy_data |= (CR_1000T_MS_ENABLE | CR_1000T_MS_VALUE);
1294 case e1000_ms_force_slave:
1295 phy_data |= CR_1000T_MS_ENABLE;
1296 phy_data &= ~(CR_1000T_MS_VALUE);
1299 phy_data &= ~CR_1000T_MS_ENABLE;
1303 ret_val = e1000_write_phy_reg(hw, PHY_1000T_CTRL, phy_data);
1308 return E1000_SUCCESS;
1312 /********************************************************************
1313 * Copper link setup for e1000_phy_m88 series.
1315 * hw - Struct containing variables accessed by shared code
1316 *********************************************************************/
1318 e1000_copper_link_mgp_setup(struct e1000_hw *hw)
1323 DEBUGFUNC("e1000_copper_link_mgp_setup");
1325 if(hw->phy_reset_disable)
1326 return E1000_SUCCESS;
1328 /* Enable CRS on TX. This must be set for half-duplex operation. */
1329 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
1333 phy_data |= M88E1000_PSCR_ASSERT_CRS_ON_TX;
1336 * MDI/MDI-X = 0 (default)
1337 * 0 - Auto for all speeds
1340 * 3 - Auto for 1000Base-T only (MDI-X for 10/100Base-T modes)
1342 phy_data &= ~M88E1000_PSCR_AUTO_X_MODE;
1346 phy_data |= M88E1000_PSCR_MDI_MANUAL_MODE;
1349 phy_data |= M88E1000_PSCR_MDIX_MANUAL_MODE;
1352 phy_data |= M88E1000_PSCR_AUTO_X_1000T;
1356 phy_data |= M88E1000_PSCR_AUTO_X_MODE;
1361 * disable_polarity_correction = 0 (default)
1362 * Automatic Correction for Reversed Cable Polarity
1366 phy_data &= ~M88E1000_PSCR_POLARITY_REVERSAL;
1367 if(hw->disable_polarity_correction == 1)
1368 phy_data |= M88E1000_PSCR_POLARITY_REVERSAL;
1369 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data);
1373 /* Force TX_CLK in the Extended PHY Specific Control Register
1376 ret_val = e1000_read_phy_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL, &phy_data);
1380 phy_data |= M88E1000_EPSCR_TX_CLK_25;
1382 if (hw->phy_revision < M88E1011_I_REV_4) {
1383 /* Configure Master and Slave downshift values */
1384 phy_data &= ~(M88E1000_EPSCR_MASTER_DOWNSHIFT_MASK |
1385 M88E1000_EPSCR_SLAVE_DOWNSHIFT_MASK);
1386 phy_data |= (M88E1000_EPSCR_MASTER_DOWNSHIFT_1X |
1387 M88E1000_EPSCR_SLAVE_DOWNSHIFT_1X);
1388 ret_val = e1000_write_phy_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL, phy_data);
1393 /* SW Reset the PHY so all changes take effect */
1394 ret_val = e1000_phy_reset(hw);
1396 DEBUGOUT("Error Resetting the PHY\n");
1400 return E1000_SUCCESS;
1403 /********************************************************************
1404 * Setup auto-negotiation and flow control advertisements,
1405 * and then perform auto-negotiation.
1407 * hw - Struct containing variables accessed by shared code
1408 *********************************************************************/
1410 e1000_copper_link_autoneg(struct e1000_hw *hw)
1415 DEBUGFUNC("e1000_copper_link_autoneg");
1417 /* Perform some bounds checking on the hw->autoneg_advertised
1418 * parameter. If this variable is zero, then set it to the default.
1420 hw->autoneg_advertised &= AUTONEG_ADVERTISE_SPEED_DEFAULT;
1422 /* If autoneg_advertised is zero, we assume it was not defaulted
1423 * by the calling code so we set to advertise full capability.
1425 if(hw->autoneg_advertised == 0)
1426 hw->autoneg_advertised = AUTONEG_ADVERTISE_SPEED_DEFAULT;
1428 DEBUGOUT("Reconfiguring auto-neg advertisement params\n");
1429 ret_val = e1000_phy_setup_autoneg(hw);
1431 DEBUGOUT("Error Setting up Auto-Negotiation\n");
1434 DEBUGOUT("Restarting Auto-Neg\n");
1436 /* Restart auto-negotiation by setting the Auto Neg Enable bit and
1437 * the Auto Neg Restart bit in the PHY control register.
1439 ret_val = e1000_read_phy_reg(hw, PHY_CTRL, &phy_data);
1443 phy_data |= (MII_CR_AUTO_NEG_EN | MII_CR_RESTART_AUTO_NEG);
1444 ret_val = e1000_write_phy_reg(hw, PHY_CTRL, phy_data);
1448 /* Does the user want to wait for Auto-Neg to complete here, or
1449 * check at a later time (for example, callback routine).
1451 if(hw->wait_autoneg_complete) {
1452 ret_val = e1000_wait_autoneg(hw);
1454 DEBUGOUT("Error while waiting for autoneg to complete\n");
1459 hw->get_link_status = TRUE;
1461 return E1000_SUCCESS;
1465 /******************************************************************************
1466 * Config the MAC and the PHY after link is up.
1467 * 1) Set up the MAC to the current PHY speed/duplex
1468 * if we are on 82543. If we
1469 * are on newer silicon, we only need to configure
1470 * collision distance in the Transmit Control Register.
1471 * 2) Set up flow control on the MAC to that established with
1473 * 3) Config DSP to improve Gigabit link quality for some PHY revisions.
1475 * hw - Struct containing variables accessed by shared code
1476 ******************************************************************************/
1478 e1000_copper_link_postconfig(struct e1000_hw *hw)
1481 DEBUGFUNC("e1000_copper_link_postconfig");
1483 if(hw->mac_type >= e1000_82544) {
1484 e1000_config_collision_dist(hw);
1486 ret_val = e1000_config_mac_to_phy(hw);
1488 DEBUGOUT("Error configuring MAC to PHY settings\n");
1492 ret_val = e1000_config_fc_after_link_up(hw);
1494 DEBUGOUT("Error Configuring Flow Control\n");
1498 /* Config DSP to improve Giga link quality */
1499 if(hw->phy_type == e1000_phy_igp) {
1500 ret_val = e1000_config_dsp_after_link_change(hw, TRUE);
1502 DEBUGOUT("Error Configuring DSP after link up\n");
1507 return E1000_SUCCESS;
1510 /******************************************************************************
1511 * Detects which PHY is present and setup the speed and duplex
1513 * hw - Struct containing variables accessed by shared code
1514 ******************************************************************************/
1516 e1000_setup_copper_link(struct e1000_hw *hw)
1522 DEBUGFUNC("e1000_setup_copper_link");
1524 /* Check if it is a valid PHY and set PHY mode if necessary. */
1525 ret_val = e1000_copper_link_preconfig(hw);
1529 if (hw->phy_type == e1000_phy_igp ||
1530 hw->phy_type == e1000_phy_igp_2) {
1531 ret_val = e1000_copper_link_igp_setup(hw);
1534 } else if (hw->phy_type == e1000_phy_m88) {
1535 ret_val = e1000_copper_link_mgp_setup(hw);
1541 /* Setup autoneg and flow control advertisement
1542 * and perform autonegotiation */
1543 ret_val = e1000_copper_link_autoneg(hw);
1547 /* PHY will be set to 10H, 10F, 100H,or 100F
1548 * depending on value from forced_speed_duplex. */
1549 DEBUGOUT("Forcing speed and duplex\n");
1550 ret_val = e1000_phy_force_speed_duplex(hw);
1552 DEBUGOUT("Error Forcing Speed and Duplex\n");
1557 /* Check link status. Wait up to 100 microseconds for link to become
1560 for(i = 0; i < 10; i++) {
1561 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
1564 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
1568 if(phy_data & MII_SR_LINK_STATUS) {
1569 /* Config the MAC and PHY after link is up */
1570 ret_val = e1000_copper_link_postconfig(hw);
1574 DEBUGOUT("Valid link established!!!\n");
1575 return E1000_SUCCESS;
1580 DEBUGOUT("Unable to establish link!!!\n");
1581 return E1000_SUCCESS;
1584 /******************************************************************************
1585 * Configures PHY autoneg and flow control advertisement settings
1587 * hw - Struct containing variables accessed by shared code
1588 ******************************************************************************/
1590 e1000_phy_setup_autoneg(struct e1000_hw *hw)
1593 uint16_t mii_autoneg_adv_reg;
1594 uint16_t mii_1000t_ctrl_reg;
1596 DEBUGFUNC("e1000_phy_setup_autoneg");
1598 /* Read the MII Auto-Neg Advertisement Register (Address 4). */
1599 ret_val = e1000_read_phy_reg(hw, PHY_AUTONEG_ADV, &mii_autoneg_adv_reg);
1603 /* Read the MII 1000Base-T Control Register (Address 9). */
1604 ret_val = e1000_read_phy_reg(hw, PHY_1000T_CTRL, &mii_1000t_ctrl_reg);
1608 /* Need to parse both autoneg_advertised and fc and set up
1609 * the appropriate PHY registers. First we will parse for
1610 * autoneg_advertised software override. Since we can advertise
1611 * a plethora of combinations, we need to check each bit
1615 /* First we clear all the 10/100 mb speed bits in the Auto-Neg
1616 * Advertisement Register (Address 4) and the 1000 mb speed bits in
1617 * the 1000Base-T Control Register (Address 9).
1619 mii_autoneg_adv_reg &= ~REG4_SPEED_MASK;
1620 mii_1000t_ctrl_reg &= ~REG9_SPEED_MASK;
1622 DEBUGOUT1("autoneg_advertised %x\n", hw->autoneg_advertised);
1624 /* Do we want to advertise 10 Mb Half Duplex? */
1625 if(hw->autoneg_advertised & ADVERTISE_10_HALF) {
1626 DEBUGOUT("Advertise 10mb Half duplex\n");
1627 mii_autoneg_adv_reg |= NWAY_AR_10T_HD_CAPS;
1630 /* Do we want to advertise 10 Mb Full Duplex? */
1631 if(hw->autoneg_advertised & ADVERTISE_10_FULL) {
1632 DEBUGOUT("Advertise 10mb Full duplex\n");
1633 mii_autoneg_adv_reg |= NWAY_AR_10T_FD_CAPS;
1636 /* Do we want to advertise 100 Mb Half Duplex? */
1637 if(hw->autoneg_advertised & ADVERTISE_100_HALF) {
1638 DEBUGOUT("Advertise 100mb Half duplex\n");
1639 mii_autoneg_adv_reg |= NWAY_AR_100TX_HD_CAPS;
1642 /* Do we want to advertise 100 Mb Full Duplex? */
1643 if(hw->autoneg_advertised & ADVERTISE_100_FULL) {
1644 DEBUGOUT("Advertise 100mb Full duplex\n");
1645 mii_autoneg_adv_reg |= NWAY_AR_100TX_FD_CAPS;
1648 /* We do not allow the Phy to advertise 1000 Mb Half Duplex */
1649 if(hw->autoneg_advertised & ADVERTISE_1000_HALF) {
1650 DEBUGOUT("Advertise 1000mb Half duplex requested, request denied!\n");
1653 /* Do we want to advertise 1000 Mb Full Duplex? */
1654 if(hw->autoneg_advertised & ADVERTISE_1000_FULL) {
1655 DEBUGOUT("Advertise 1000mb Full duplex\n");
1656 mii_1000t_ctrl_reg |= CR_1000T_FD_CAPS;
1659 /* Check for a software override of the flow control settings, and
1660 * setup the PHY advertisement registers accordingly. If
1661 * auto-negotiation is enabled, then software will have to set the
1662 * "PAUSE" bits to the correct value in the Auto-Negotiation
1663 * Advertisement Register (PHY_AUTONEG_ADV) and re-start auto-negotiation.
1665 * The possible values of the "fc" parameter are:
1666 * 0: Flow control is completely disabled
1667 * 1: Rx flow control is enabled (we can receive pause frames
1668 * but not send pause frames).
1669 * 2: Tx flow control is enabled (we can send pause frames
1670 * but we do not support receiving pause frames).
1671 * 3: Both Rx and TX flow control (symmetric) are enabled.
1672 * other: No software override. The flow control configuration
1673 * in the EEPROM is used.
1676 case e1000_fc_none: /* 0 */
1677 /* Flow control (RX & TX) is completely disabled by a
1678 * software over-ride.
1680 mii_autoneg_adv_reg &= ~(NWAY_AR_ASM_DIR | NWAY_AR_PAUSE);
1682 case e1000_fc_rx_pause: /* 1 */
1683 /* RX Flow control is enabled, and TX Flow control is
1684 * disabled, by a software over-ride.
1686 /* Since there really isn't a way to advertise that we are
1687 * capable of RX Pause ONLY, we will advertise that we
1688 * support both symmetric and asymmetric RX PAUSE. Later
1689 * (in e1000_config_fc_after_link_up) we will disable the
1690 *hw's ability to send PAUSE frames.
1692 mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE);
1694 case e1000_fc_tx_pause: /* 2 */
1695 /* TX Flow control is enabled, and RX Flow control is
1696 * disabled, by a software over-ride.
1698 mii_autoneg_adv_reg |= NWAY_AR_ASM_DIR;
1699 mii_autoneg_adv_reg &= ~NWAY_AR_PAUSE;
1701 case e1000_fc_full: /* 3 */
1702 /* Flow control (both RX and TX) is enabled by a software
1705 mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE);
1708 DEBUGOUT("Flow control param set incorrectly\n");
1709 return -E1000_ERR_CONFIG;
1712 ret_val = e1000_write_phy_reg(hw, PHY_AUTONEG_ADV, mii_autoneg_adv_reg);
1716 DEBUGOUT1("Auto-Neg Advertising %x\n", mii_autoneg_adv_reg);
1718 ret_val = e1000_write_phy_reg(hw, PHY_1000T_CTRL, mii_1000t_ctrl_reg);
1722 return E1000_SUCCESS;
1725 /******************************************************************************
1726 * Force PHY speed and duplex settings to hw->forced_speed_duplex
1728 * hw - Struct containing variables accessed by shared code
1729 ******************************************************************************/
1731 e1000_phy_force_speed_duplex(struct e1000_hw *hw)
1735 uint16_t mii_ctrl_reg;
1736 uint16_t mii_status_reg;
1740 DEBUGFUNC("e1000_phy_force_speed_duplex");
1742 /* Turn off Flow control if we are forcing speed and duplex. */
1743 hw->fc = e1000_fc_none;
1745 DEBUGOUT1("hw->fc = %d\n", hw->fc);
1747 /* Read the Device Control Register. */
1748 ctrl = E1000_READ_REG(hw, CTRL);
1750 /* Set the bits to Force Speed and Duplex in the Device Ctrl Reg. */
1751 ctrl |= (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
1752 ctrl &= ~(DEVICE_SPEED_MASK);
1754 /* Clear the Auto Speed Detect Enable bit. */
1755 ctrl &= ~E1000_CTRL_ASDE;
1757 /* Read the MII Control Register. */
1758 ret_val = e1000_read_phy_reg(hw, PHY_CTRL, &mii_ctrl_reg);
1762 /* We need to disable autoneg in order to force link and duplex. */
1764 mii_ctrl_reg &= ~MII_CR_AUTO_NEG_EN;
1766 /* Are we forcing Full or Half Duplex? */
1767 if(hw->forced_speed_duplex == e1000_100_full ||
1768 hw->forced_speed_duplex == e1000_10_full) {
1769 /* We want to force full duplex so we SET the full duplex bits in the
1770 * Device and MII Control Registers.
1772 ctrl |= E1000_CTRL_FD;
1773 mii_ctrl_reg |= MII_CR_FULL_DUPLEX;
1774 DEBUGOUT("Full Duplex\n");
1776 /* We want to force half duplex so we CLEAR the full duplex bits in
1777 * the Device and MII Control Registers.
1779 ctrl &= ~E1000_CTRL_FD;
1780 mii_ctrl_reg &= ~MII_CR_FULL_DUPLEX;
1781 DEBUGOUT("Half Duplex\n");
1784 /* Are we forcing 100Mbps??? */
1785 if(hw->forced_speed_duplex == e1000_100_full ||
1786 hw->forced_speed_duplex == e1000_100_half) {
1787 /* Set the 100Mb bit and turn off the 1000Mb and 10Mb bits. */
1788 ctrl |= E1000_CTRL_SPD_100;
1789 mii_ctrl_reg |= MII_CR_SPEED_100;
1790 mii_ctrl_reg &= ~(MII_CR_SPEED_1000 | MII_CR_SPEED_10);
1791 DEBUGOUT("Forcing 100mb ");
1793 /* Set the 10Mb bit and turn off the 1000Mb and 100Mb bits. */
1794 ctrl &= ~(E1000_CTRL_SPD_1000 | E1000_CTRL_SPD_100);
1795 mii_ctrl_reg |= MII_CR_SPEED_10;
1796 mii_ctrl_reg &= ~(MII_CR_SPEED_1000 | MII_CR_SPEED_100);
1797 DEBUGOUT("Forcing 10mb ");
1800 e1000_config_collision_dist(hw);
1802 /* Write the configured values back to the Device Control Reg. */
1803 E1000_WRITE_REG(hw, CTRL, ctrl);
1805 if (hw->phy_type == e1000_phy_m88) {
1806 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
1810 /* Clear Auto-Crossover to force MDI manually. M88E1000 requires MDI
1811 * forced whenever speed are duplex are forced.
1813 phy_data &= ~M88E1000_PSCR_AUTO_X_MODE;
1814 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data);
1818 DEBUGOUT1("M88E1000 PSCR: %x \n", phy_data);
1820 /* Need to reset the PHY or these changes will be ignored */
1821 mii_ctrl_reg |= MII_CR_RESET;
1823 /* Clear Auto-Crossover to force MDI manually. IGP requires MDI
1824 * forced whenever speed or duplex are forced.
1826 ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, &phy_data);
1830 phy_data &= ~IGP01E1000_PSCR_AUTO_MDIX;
1831 phy_data &= ~IGP01E1000_PSCR_FORCE_MDI_MDIX;
1833 ret_val = e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, phy_data);
1838 /* Write back the modified PHY MII control register. */
1839 ret_val = e1000_write_phy_reg(hw, PHY_CTRL, mii_ctrl_reg);
1845 /* The wait_autoneg_complete flag may be a little misleading here.
1846 * Since we are forcing speed and duplex, Auto-Neg is not enabled.
1847 * But we do want to delay for a period while forcing only so we
1848 * don't generate false No Link messages. So we will wait here
1849 * only if the user has set wait_autoneg_complete to 1, which is
1852 if(hw->wait_autoneg_complete) {
1853 /* We will wait for autoneg to complete. */
1854 DEBUGOUT("Waiting for forced speed/duplex link.\n");
1857 /* We will wait for autoneg to complete or 4.5 seconds to expire. */
1858 for(i = PHY_FORCE_TIME; i > 0; i--) {
1859 /* Read the MII Status Register and wait for Auto-Neg Complete bit
1862 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
1866 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
1870 if(mii_status_reg & MII_SR_LINK_STATUS) break;
1874 (hw->phy_type == e1000_phy_m88)) {
1875 /* We didn't get link. Reset the DSP and wait again for link. */
1876 ret_val = e1000_phy_reset_dsp(hw);
1878 DEBUGOUT("Error Resetting PHY DSP\n");
1882 /* This loop will early-out if the link condition has been met. */
1883 for(i = PHY_FORCE_TIME; i > 0; i--) {
1884 if(mii_status_reg & MII_SR_LINK_STATUS) break;
1886 /* Read the MII Status Register and wait for Auto-Neg Complete bit
1889 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
1893 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
1899 if (hw->phy_type == e1000_phy_m88) {
1900 /* Because we reset the PHY above, we need to re-force TX_CLK in the
1901 * Extended PHY Specific Control Register to 25MHz clock. This value
1902 * defaults back to a 2.5MHz clock when the PHY is reset.
1904 ret_val = e1000_read_phy_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL, &phy_data);
1908 phy_data |= M88E1000_EPSCR_TX_CLK_25;
1909 ret_val = e1000_write_phy_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL, phy_data);
1913 /* In addition, because of the s/w reset above, we need to enable CRS on
1914 * TX. This must be set for both full and half duplex operation.
1916 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
1920 phy_data |= M88E1000_PSCR_ASSERT_CRS_ON_TX;
1921 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data);
1925 if((hw->mac_type == e1000_82544 || hw->mac_type == e1000_82543) &&
1927 (hw->forced_speed_duplex == e1000_10_full ||
1928 hw->forced_speed_duplex == e1000_10_half)) {
1929 ret_val = e1000_polarity_reversal_workaround(hw);
1934 return E1000_SUCCESS;
1937 /******************************************************************************
1938 * Sets the collision distance in the Transmit Control register
1940 * hw - Struct containing variables accessed by shared code
1942 * Link should have been established previously. Reads the speed and duplex
1943 * information from the Device Status register.
1944 ******************************************************************************/
1946 e1000_config_collision_dist(struct e1000_hw *hw)
1948 uint32_t tctl, coll_dist;
1950 DEBUGFUNC("e1000_config_collision_dist");
1952 if (hw->mac_type < e1000_82543)
1953 coll_dist = E1000_COLLISION_DISTANCE_82542;
1955 coll_dist = E1000_COLLISION_DISTANCE;
1957 tctl = E1000_READ_REG(hw, TCTL);
1959 tctl &= ~E1000_TCTL_COLD;
1960 tctl |= coll_dist << E1000_COLD_SHIFT;
1962 E1000_WRITE_REG(hw, TCTL, tctl);
1963 E1000_WRITE_FLUSH(hw);
1966 /******************************************************************************
1967 * Sets MAC speed and duplex settings to reflect the those in the PHY
1969 * hw - Struct containing variables accessed by shared code
1970 * mii_reg - data to write to the MII control register
1972 * The contents of the PHY register containing the needed information need to
1974 ******************************************************************************/
1976 e1000_config_mac_to_phy(struct e1000_hw *hw)
1982 DEBUGFUNC("e1000_config_mac_to_phy");
1984 /* 82544 or newer MAC, Auto Speed Detection takes care of
1985 * MAC speed/duplex configuration.*/
1986 if (hw->mac_type >= e1000_82544)
1987 return E1000_SUCCESS;
1989 /* Read the Device Control Register and set the bits to Force Speed
1992 ctrl = E1000_READ_REG(hw, CTRL);
1993 ctrl |= (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
1994 ctrl &= ~(E1000_CTRL_SPD_SEL | E1000_CTRL_ILOS);
1996 /* Set up duplex in the Device Control and Transmit Control
1997 * registers depending on negotiated values.
1999 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS, &phy_data);
2003 if(phy_data & M88E1000_PSSR_DPLX)
2004 ctrl |= E1000_CTRL_FD;
2006 ctrl &= ~E1000_CTRL_FD;
2008 e1000_config_collision_dist(hw);
2010 /* Set up speed in the Device Control register depending on
2011 * negotiated values.
2013 if((phy_data & M88E1000_PSSR_SPEED) == M88E1000_PSSR_1000MBS)
2014 ctrl |= E1000_CTRL_SPD_1000;
2015 else if((phy_data & M88E1000_PSSR_SPEED) == M88E1000_PSSR_100MBS)
2016 ctrl |= E1000_CTRL_SPD_100;
2018 /* Write the configured values back to the Device Control Reg. */
2019 E1000_WRITE_REG(hw, CTRL, ctrl);
2020 return E1000_SUCCESS;
2023 /******************************************************************************
2024 * Forces the MAC's flow control settings.
2026 * hw - Struct containing variables accessed by shared code
2028 * Sets the TFCE and RFCE bits in the device control register to reflect
2029 * the adapter settings. TFCE and RFCE need to be explicitly set by
2030 * software when a Copper PHY is used because autonegotiation is managed
2031 * by the PHY rather than the MAC. Software must also configure these
2032 * bits when link is forced on a fiber connection.
2033 *****************************************************************************/
2035 e1000_force_mac_fc(struct e1000_hw *hw)
2039 DEBUGFUNC("e1000_force_mac_fc");
2041 /* Get the current configuration of the Device Control Register */
2042 ctrl = E1000_READ_REG(hw, CTRL);
2044 /* Because we didn't get link via the internal auto-negotiation
2045 * mechanism (we either forced link or we got link via PHY
2046 * auto-neg), we have to manually enable/disable transmit an
2047 * receive flow control.
2049 * The "Case" statement below enables/disable flow control
2050 * according to the "hw->fc" parameter.
2052 * The possible values of the "fc" parameter are:
2053 * 0: Flow control is completely disabled
2054 * 1: Rx flow control is enabled (we can receive pause
2055 * frames but not send pause frames).
2056 * 2: Tx flow control is enabled (we can send pause frames
2057 * frames but we do not receive pause frames).
2058 * 3: Both Rx and TX flow control (symmetric) is enabled.
2059 * other: No other values should be possible at this point.
2064 ctrl &= (~(E1000_CTRL_TFCE | E1000_CTRL_RFCE));
2066 case e1000_fc_rx_pause:
2067 ctrl &= (~E1000_CTRL_TFCE);
2068 ctrl |= E1000_CTRL_RFCE;
2070 case e1000_fc_tx_pause:
2071 ctrl &= (~E1000_CTRL_RFCE);
2072 ctrl |= E1000_CTRL_TFCE;
2075 ctrl |= (E1000_CTRL_TFCE | E1000_CTRL_RFCE);
2078 DEBUGOUT("Flow control param set incorrectly\n");
2079 return -E1000_ERR_CONFIG;
2082 /* Disable TX Flow Control for 82542 (rev 2.0) */
2083 if(hw->mac_type == e1000_82542_rev2_0)
2084 ctrl &= (~E1000_CTRL_TFCE);
2086 E1000_WRITE_REG(hw, CTRL, ctrl);
2087 return E1000_SUCCESS;
2090 /******************************************************************************
2091 * Configures flow control settings after link is established
2093 * hw - Struct containing variables accessed by shared code
2095 * Should be called immediately after a valid link has been established.
2096 * Forces MAC flow control settings if link was forced. When in MII/GMII mode
2097 * and autonegotiation is enabled, the MAC flow control settings will be set
2098 * based on the flow control negotiated by the PHY. In TBI mode, the TFCE
2099 * and RFCE bits will be automaticaly set to the negotiated flow control mode.
2100 *****************************************************************************/
2102 e1000_config_fc_after_link_up(struct e1000_hw *hw)
2105 uint16_t mii_status_reg;
2106 uint16_t mii_nway_adv_reg;
2107 uint16_t mii_nway_lp_ability_reg;
2111 DEBUGFUNC("e1000_config_fc_after_link_up");
2113 /* Check for the case where we have fiber media and auto-neg failed
2114 * so we had to force link. In this case, we need to force the
2115 * configuration of the MAC to match the "fc" parameter.
2117 if(((hw->media_type == e1000_media_type_fiber) && (hw->autoneg_failed)) ||
2118 ((hw->media_type == e1000_media_type_internal_serdes) && (hw->autoneg_failed)) ||
2119 ((hw->media_type == e1000_media_type_copper) && (!hw->autoneg))) {
2120 ret_val = e1000_force_mac_fc(hw);
2122 DEBUGOUT("Error forcing flow control settings\n");
2127 /* Check for the case where we have copper media and auto-neg is
2128 * enabled. In this case, we need to check and see if Auto-Neg
2129 * has completed, and if so, how the PHY and link partner has
2130 * flow control configured.
2132 if((hw->media_type == e1000_media_type_copper) && hw->autoneg) {
2133 /* Read the MII Status Register and check to see if AutoNeg
2134 * has completed. We read this twice because this reg has
2135 * some "sticky" (latched) bits.
2137 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
2140 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
2144 if(mii_status_reg & MII_SR_AUTONEG_COMPLETE) {
2145 /* The AutoNeg process has completed, so we now need to
2146 * read both the Auto Negotiation Advertisement Register
2147 * (Address 4) and the Auto_Negotiation Base Page Ability
2148 * Register (Address 5) to determine how flow control was
2151 ret_val = e1000_read_phy_reg(hw, PHY_AUTONEG_ADV,
2155 ret_val = e1000_read_phy_reg(hw, PHY_LP_ABILITY,
2156 &mii_nway_lp_ability_reg);
2160 /* Two bits in the Auto Negotiation Advertisement Register
2161 * (Address 4) and two bits in the Auto Negotiation Base
2162 * Page Ability Register (Address 5) determine flow control
2163 * for both the PHY and the link partner. The following
2164 * table, taken out of the IEEE 802.3ab/D6.0 dated March 25,
2165 * 1999, describes these PAUSE resolution bits and how flow
2166 * control is determined based upon these settings.
2167 * NOTE: DC = Don't Care
2169 * LOCAL DEVICE | LINK PARTNER
2170 * PAUSE | ASM_DIR | PAUSE | ASM_DIR | NIC Resolution
2171 *-------|---------|-------|---------|--------------------
2172 * 0 | 0 | DC | DC | e1000_fc_none
2173 * 0 | 1 | 0 | DC | e1000_fc_none
2174 * 0 | 1 | 1 | 0 | e1000_fc_none
2175 * 0 | 1 | 1 | 1 | e1000_fc_tx_pause
2176 * 1 | 0 | 0 | DC | e1000_fc_none
2177 * 1 | DC | 1 | DC | e1000_fc_full
2178 * 1 | 1 | 0 | 0 | e1000_fc_none
2179 * 1 | 1 | 0 | 1 | e1000_fc_rx_pause
2182 /* Are both PAUSE bits set to 1? If so, this implies
2183 * Symmetric Flow Control is enabled at both ends. The
2184 * ASM_DIR bits are irrelevant per the spec.
2186 * For Symmetric Flow Control:
2188 * LOCAL DEVICE | LINK PARTNER
2189 * PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result
2190 *-------|---------|-------|---------|--------------------
2191 * 1 | DC | 1 | DC | e1000_fc_full
2194 if((mii_nway_adv_reg & NWAY_AR_PAUSE) &&
2195 (mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE)) {
2196 /* Now we need to check if the user selected RX ONLY
2197 * of pause frames. In this case, we had to advertise
2198 * FULL flow control because we could not advertise RX
2199 * ONLY. Hence, we must now check to see if we need to
2200 * turn OFF the TRANSMISSION of PAUSE frames.
2202 if(hw->original_fc == e1000_fc_full) {
2203 hw->fc = e1000_fc_full;
2204 DEBUGOUT("Flow Control = FULL.\r\n");
2206 hw->fc = e1000_fc_rx_pause;
2207 DEBUGOUT("Flow Control = RX PAUSE frames only.\r\n");
2210 /* For receiving PAUSE frames ONLY.
2212 * LOCAL DEVICE | LINK PARTNER
2213 * PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result
2214 *-------|---------|-------|---------|--------------------
2215 * 0 | 1 | 1 | 1 | e1000_fc_tx_pause
2218 else if(!(mii_nway_adv_reg & NWAY_AR_PAUSE) &&
2219 (mii_nway_adv_reg & NWAY_AR_ASM_DIR) &&
2220 (mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE) &&
2221 (mii_nway_lp_ability_reg & NWAY_LPAR_ASM_DIR)) {
2222 hw->fc = e1000_fc_tx_pause;
2223 DEBUGOUT("Flow Control = TX PAUSE frames only.\r\n");
2225 /* For transmitting PAUSE frames ONLY.
2227 * LOCAL DEVICE | LINK PARTNER
2228 * PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result
2229 *-------|---------|-------|---------|--------------------
2230 * 1 | 1 | 0 | 1 | e1000_fc_rx_pause
2233 else if((mii_nway_adv_reg & NWAY_AR_PAUSE) &&
2234 (mii_nway_adv_reg & NWAY_AR_ASM_DIR) &&
2235 !(mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE) &&
2236 (mii_nway_lp_ability_reg & NWAY_LPAR_ASM_DIR)) {
2237 hw->fc = e1000_fc_rx_pause;
2238 DEBUGOUT("Flow Control = RX PAUSE frames only.\r\n");
2240 /* Per the IEEE spec, at this point flow control should be
2241 * disabled. However, we want to consider that we could
2242 * be connected to a legacy switch that doesn't advertise
2243 * desired flow control, but can be forced on the link
2244 * partner. So if we advertised no flow control, that is
2245 * what we will resolve to. If we advertised some kind of
2246 * receive capability (Rx Pause Only or Full Flow Control)
2247 * and the link partner advertised none, we will configure
2248 * ourselves to enable Rx Flow Control only. We can do
2249 * this safely for two reasons: If the link partner really
2250 * didn't want flow control enabled, and we enable Rx, no
2251 * harm done since we won't be receiving any PAUSE frames
2252 * anyway. If the intent on the link partner was to have
2253 * flow control enabled, then by us enabling RX only, we
2254 * can at least receive pause frames and process them.
2255 * This is a good idea because in most cases, since we are
2256 * predominantly a server NIC, more times than not we will
2257 * be asked to delay transmission of packets than asking
2258 * our link partner to pause transmission of frames.
2260 else if((hw->original_fc == e1000_fc_none ||
2261 hw->original_fc == e1000_fc_tx_pause) ||
2262 hw->fc_strict_ieee) {
2263 hw->fc = e1000_fc_none;
2264 DEBUGOUT("Flow Control = NONE.\r\n");
2266 hw->fc = e1000_fc_rx_pause;
2267 DEBUGOUT("Flow Control = RX PAUSE frames only.\r\n");
2270 /* Now we need to do one last check... If we auto-
2271 * negotiated to HALF DUPLEX, flow control should not be
2272 * enabled per IEEE 802.3 spec.
2274 ret_val = e1000_get_speed_and_duplex(hw, &speed, &duplex);
2276 DEBUGOUT("Error getting link speed and duplex\n");
2280 if(duplex == HALF_DUPLEX)
2281 hw->fc = e1000_fc_none;
2283 /* Now we call a subroutine to actually force the MAC
2284 * controller to use the correct flow control settings.
2286 ret_val = e1000_force_mac_fc(hw);
2288 DEBUGOUT("Error forcing flow control settings\n");
2292 DEBUGOUT("Copper PHY and Auto Neg has not completed.\r\n");
2295 return E1000_SUCCESS;
2298 /******************************************************************************
2299 * Checks to see if the link status of the hardware has changed.
2301 * hw - Struct containing variables accessed by shared code
2303 * Called by any function that needs to check the link status of the adapter.
2304 *****************************************************************************/
2306 e1000_check_for_link(struct e1000_hw *hw)
2313 uint32_t signal = 0;
2317 DEBUGFUNC("e1000_check_for_link");
2319 ctrl = E1000_READ_REG(hw, CTRL);
2320 status = E1000_READ_REG(hw, STATUS);
2322 /* On adapters with a MAC newer than 82544, SW Defineable pin 1 will be
2323 * set when the optics detect a signal. On older adapters, it will be
2324 * cleared when there is a signal. This applies to fiber media only.
2326 if((hw->media_type == e1000_media_type_fiber) ||
2327 (hw->media_type == e1000_media_type_internal_serdes)) {
2328 rxcw = E1000_READ_REG(hw, RXCW);
2330 if(hw->media_type == e1000_media_type_fiber) {
2331 signal = (hw->mac_type > e1000_82544) ? E1000_CTRL_SWDPIN1 : 0;
2332 if(status & E1000_STATUS_LU)
2333 hw->get_link_status = FALSE;
2337 /* If we have a copper PHY then we only want to go out to the PHY
2338 * registers to see if Auto-Neg has completed and/or if our link
2339 * status has changed. The get_link_status flag will be set if we
2340 * receive a Link Status Change interrupt or we have Rx Sequence
2343 if((hw->media_type == e1000_media_type_copper) && hw->get_link_status) {
2344 /* First we want to see if the MII Status Register reports
2345 * link. If so, then we want to get the current speed/duplex
2347 * Read the register twice since the link bit is sticky.
2349 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
2352 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
2356 if(phy_data & MII_SR_LINK_STATUS) {
2357 hw->get_link_status = FALSE;
2358 /* Check if there was DownShift, must be checked immediately after
2360 e1000_check_downshift(hw);
2362 /* If we are on 82544 or 82543 silicon and speed/duplex
2363 * are forced to 10H or 10F, then we will implement the polarity
2364 * reversal workaround. We disable interrupts first, and upon
2365 * returning, place the devices interrupt state to its previous
2366 * value except for the link status change interrupt which will
2367 * happen due to the execution of this workaround.
2370 if((hw->mac_type == e1000_82544 || hw->mac_type == e1000_82543) &&
2372 (hw->forced_speed_duplex == e1000_10_full ||
2373 hw->forced_speed_duplex == e1000_10_half)) {
2374 E1000_WRITE_REG(hw, IMC, 0xffffffff);
2375 ret_val = e1000_polarity_reversal_workaround(hw);
2376 icr = E1000_READ_REG(hw, ICR);
2377 E1000_WRITE_REG(hw, ICS, (icr & ~E1000_ICS_LSC));
2378 E1000_WRITE_REG(hw, IMS, IMS_ENABLE_MASK);
2382 /* No link detected */
2383 e1000_config_dsp_after_link_change(hw, FALSE);
2387 /* If we are forcing speed/duplex, then we simply return since
2388 * we have already determined whether we have link or not.
2390 if(!hw->autoneg) return -E1000_ERR_CONFIG;
2392 /* optimize the dsp settings for the igp phy */
2393 e1000_config_dsp_after_link_change(hw, TRUE);
2395 /* We have a M88E1000 PHY and Auto-Neg is enabled. If we
2396 * have Si on board that is 82544 or newer, Auto
2397 * Speed Detection takes care of MAC speed/duplex
2398 * configuration. So we only need to configure Collision
2399 * Distance in the MAC. Otherwise, we need to force
2400 * speed/duplex on the MAC to the current PHY speed/duplex
2403 if(hw->mac_type >= e1000_82544)
2404 e1000_config_collision_dist(hw);
2406 ret_val = e1000_config_mac_to_phy(hw);
2408 DEBUGOUT("Error configuring MAC to PHY settings\n");
2413 /* Configure Flow Control now that Auto-Neg has completed. First, we
2414 * need to restore the desired flow control settings because we may
2415 * have had to re-autoneg with a different link partner.
2417 ret_val = e1000_config_fc_after_link_up(hw);
2419 DEBUGOUT("Error configuring flow control\n");
2423 /* At this point we know that we are on copper and we have
2424 * auto-negotiated link. These are conditions for checking the link
2425 * partner capability register. We use the link speed to determine if
2426 * TBI compatibility needs to be turned on or off. If the link is not
2427 * at gigabit speed, then TBI compatibility is not needed. If we are
2428 * at gigabit speed, we turn on TBI compatibility.
2430 if(hw->tbi_compatibility_en) {
2431 uint16_t speed, duplex;
2432 e1000_get_speed_and_duplex(hw, &speed, &duplex);
2433 if(speed != SPEED_1000) {
2434 /* If link speed is not set to gigabit speed, we do not need
2435 * to enable TBI compatibility.
2437 if(hw->tbi_compatibility_on) {
2438 /* If we previously were in the mode, turn it off. */
2439 rctl = E1000_READ_REG(hw, RCTL);
2440 rctl &= ~E1000_RCTL_SBP;
2441 E1000_WRITE_REG(hw, RCTL, rctl);
2442 hw->tbi_compatibility_on = FALSE;
2445 /* If TBI compatibility is was previously off, turn it on. For
2446 * compatibility with a TBI link partner, we will store bad
2447 * packets. Some frames have an additional byte on the end and
2448 * will look like CRC errors to to the hardware.
2450 if(!hw->tbi_compatibility_on) {
2451 hw->tbi_compatibility_on = TRUE;
2452 rctl = E1000_READ_REG(hw, RCTL);
2453 rctl |= E1000_RCTL_SBP;
2454 E1000_WRITE_REG(hw, RCTL, rctl);
2459 /* If we don't have link (auto-negotiation failed or link partner cannot
2460 * auto-negotiate), the cable is plugged in (we have signal), and our
2461 * link partner is not trying to auto-negotiate with us (we are receiving
2462 * idles or data), we need to force link up. We also need to give
2463 * auto-negotiation time to complete, in case the cable was just plugged
2464 * in. The autoneg_failed flag does this.
2466 else if((((hw->media_type == e1000_media_type_fiber) &&
2467 ((ctrl & E1000_CTRL_SWDPIN1) == signal)) ||
2468 (hw->media_type == e1000_media_type_internal_serdes)) &&
2469 (!(status & E1000_STATUS_LU)) &&
2470 (!(rxcw & E1000_RXCW_C))) {
2471 if(hw->autoneg_failed == 0) {
2472 hw->autoneg_failed = 1;
2475 DEBUGOUT("NOT RXing /C/, disable AutoNeg and force link.\r\n");
2477 /* Disable auto-negotiation in the TXCW register */
2478 E1000_WRITE_REG(hw, TXCW, (hw->txcw & ~E1000_TXCW_ANE));
2480 /* Force link-up and also force full-duplex. */
2481 ctrl = E1000_READ_REG(hw, CTRL);
2482 ctrl |= (E1000_CTRL_SLU | E1000_CTRL_FD);
2483 E1000_WRITE_REG(hw, CTRL, ctrl);
2485 /* Configure Flow Control after forcing link up. */
2486 ret_val = e1000_config_fc_after_link_up(hw);
2488 DEBUGOUT("Error configuring flow control\n");
2492 /* If we are forcing link and we are receiving /C/ ordered sets, re-enable
2493 * auto-negotiation in the TXCW register and disable forced link in the
2494 * Device Control register in an attempt to auto-negotiate with our link
2497 else if(((hw->media_type == e1000_media_type_fiber) ||
2498 (hw->media_type == e1000_media_type_internal_serdes)) &&
2499 (ctrl & E1000_CTRL_SLU) && (rxcw & E1000_RXCW_C)) {
2500 DEBUGOUT("RXing /C/, enable AutoNeg and stop forcing link.\r\n");
2501 E1000_WRITE_REG(hw, TXCW, hw->txcw);
2502 E1000_WRITE_REG(hw, CTRL, (ctrl & ~E1000_CTRL_SLU));
2504 hw->serdes_link_down = FALSE;
2506 /* If we force link for non-auto-negotiation switch, check link status
2507 * based on MAC synchronization for internal serdes media type.
2509 else if((hw->media_type == e1000_media_type_internal_serdes) &&
2510 !(E1000_TXCW_ANE & E1000_READ_REG(hw, TXCW))) {
2511 /* SYNCH bit and IV bit are sticky. */
2513 if(E1000_RXCW_SYNCH & E1000_READ_REG(hw, RXCW)) {
2514 if(!(rxcw & E1000_RXCW_IV)) {
2515 hw->serdes_link_down = FALSE;
2516 DEBUGOUT("SERDES: Link is up.\n");
2519 hw->serdes_link_down = TRUE;
2520 DEBUGOUT("SERDES: Link is down.\n");
2523 if((hw->media_type == e1000_media_type_internal_serdes) &&
2524 (E1000_TXCW_ANE & E1000_READ_REG(hw, TXCW))) {
2525 hw->serdes_link_down = !(E1000_STATUS_LU & E1000_READ_REG(hw, STATUS));
2527 return E1000_SUCCESS;
2530 /******************************************************************************
2531 * Detects the current speed and duplex settings of the hardware.
2533 * hw - Struct containing variables accessed by shared code
2534 * speed - Speed of the connection
2535 * duplex - Duplex setting of the connection
2536 *****************************************************************************/
2538 e1000_get_speed_and_duplex(struct e1000_hw *hw,
2546 DEBUGFUNC("e1000_get_speed_and_duplex");
2548 if(hw->mac_type >= e1000_82543) {
2549 status = E1000_READ_REG(hw, STATUS);
2550 if(status & E1000_STATUS_SPEED_1000) {
2551 *speed = SPEED_1000;
2552 DEBUGOUT("1000 Mbs, ");
2553 } else if(status & E1000_STATUS_SPEED_100) {
2555 DEBUGOUT("100 Mbs, ");
2558 DEBUGOUT("10 Mbs, ");
2561 if(status & E1000_STATUS_FD) {
2562 *duplex = FULL_DUPLEX;
2563 DEBUGOUT("Full Duplex\r\n");
2565 *duplex = HALF_DUPLEX;
2566 DEBUGOUT(" Half Duplex\r\n");
2569 DEBUGOUT("1000 Mbs, Full Duplex\r\n");
2570 *speed = SPEED_1000;
2571 *duplex = FULL_DUPLEX;
2574 /* IGP01 PHY may advertise full duplex operation after speed downgrade even
2575 * if it is operating at half duplex. Here we set the duplex settings to
2576 * match the duplex in the link partner's capabilities.
2578 if(hw->phy_type == e1000_phy_igp && hw->speed_downgraded) {
2579 ret_val = e1000_read_phy_reg(hw, PHY_AUTONEG_EXP, &phy_data);
2583 if(!(phy_data & NWAY_ER_LP_NWAY_CAPS))
2584 *duplex = HALF_DUPLEX;
2586 ret_val = e1000_read_phy_reg(hw, PHY_LP_ABILITY, &phy_data);
2589 if((*speed == SPEED_100 && !(phy_data & NWAY_LPAR_100TX_FD_CAPS)) ||
2590 (*speed == SPEED_10 && !(phy_data & NWAY_LPAR_10T_FD_CAPS)))
2591 *duplex = HALF_DUPLEX;
2595 return E1000_SUCCESS;
2598 /******************************************************************************
2599 * Blocks until autoneg completes or times out (~4.5 seconds)
2601 * hw - Struct containing variables accessed by shared code
2602 ******************************************************************************/
2604 e1000_wait_autoneg(struct e1000_hw *hw)
2610 DEBUGFUNC("e1000_wait_autoneg");
2611 DEBUGOUT("Waiting for Auto-Neg to complete.\n");
2613 /* We will wait for autoneg to complete or 4.5 seconds to expire. */
2614 for(i = PHY_AUTO_NEG_TIME; i > 0; i--) {
2615 /* Read the MII Status Register and wait for Auto-Neg
2616 * Complete bit to be set.
2618 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
2621 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
2624 if(phy_data & MII_SR_AUTONEG_COMPLETE) {
2625 return E1000_SUCCESS;
2629 return E1000_SUCCESS;
2632 /******************************************************************************
2633 * Raises the Management Data Clock
2635 * hw - Struct containing variables accessed by shared code
2636 * ctrl - Device control register's current value
2637 ******************************************************************************/
2639 e1000_raise_mdi_clk(struct e1000_hw *hw,
2642 /* Raise the clock input to the Management Data Clock (by setting the MDC
2643 * bit), and then delay 10 microseconds.
2645 E1000_WRITE_REG(hw, CTRL, (*ctrl | E1000_CTRL_MDC));
2646 E1000_WRITE_FLUSH(hw);
2650 /******************************************************************************
2651 * Lowers the Management Data Clock
2653 * hw - Struct containing variables accessed by shared code
2654 * ctrl - Device control register's current value
2655 ******************************************************************************/
2657 e1000_lower_mdi_clk(struct e1000_hw *hw,
2660 /* Lower the clock input to the Management Data Clock (by clearing the MDC
2661 * bit), and then delay 10 microseconds.
2663 E1000_WRITE_REG(hw, CTRL, (*ctrl & ~E1000_CTRL_MDC));
2664 E1000_WRITE_FLUSH(hw);
2668 /******************************************************************************
2669 * Shifts data bits out to the PHY
2671 * hw - Struct containing variables accessed by shared code
2672 * data - Data to send out to the PHY
2673 * count - Number of bits to shift out
2675 * Bits are shifted out in MSB to LSB order.
2676 ******************************************************************************/
2678 e1000_shift_out_mdi_bits(struct e1000_hw *hw,
2685 /* We need to shift "count" number of bits out to the PHY. So, the value
2686 * in the "data" parameter will be shifted out to the PHY one bit at a
2687 * time. In order to do this, "data" must be broken down into bits.
2690 mask <<= (count - 1);
2692 ctrl = E1000_READ_REG(hw, CTRL);
2694 /* Set MDIO_DIR and MDC_DIR direction bits to be used as output pins. */
2695 ctrl |= (E1000_CTRL_MDIO_DIR | E1000_CTRL_MDC_DIR);
2698 /* A "1" is shifted out to the PHY by setting the MDIO bit to "1" and
2699 * then raising and lowering the Management Data Clock. A "0" is
2700 * shifted out to the PHY by setting the MDIO bit to "0" and then
2701 * raising and lowering the clock.
2703 if(data & mask) ctrl |= E1000_CTRL_MDIO;
2704 else ctrl &= ~E1000_CTRL_MDIO;
2706 E1000_WRITE_REG(hw, CTRL, ctrl);
2707 E1000_WRITE_FLUSH(hw);
2711 e1000_raise_mdi_clk(hw, &ctrl);
2712 e1000_lower_mdi_clk(hw, &ctrl);
2718 /******************************************************************************
2719 * Shifts data bits in from the PHY
2721 * hw - Struct containing variables accessed by shared code
2723 * Bits are shifted in in MSB to LSB order.
2724 ******************************************************************************/
2726 e1000_shift_in_mdi_bits(struct e1000_hw *hw)
2732 /* In order to read a register from the PHY, we need to shift in a total
2733 * of 18 bits from the PHY. The first two bit (turnaround) times are used
2734 * to avoid contention on the MDIO pin when a read operation is performed.
2735 * These two bits are ignored by us and thrown away. Bits are "shifted in"
2736 * by raising the input to the Management Data Clock (setting the MDC bit),
2737 * and then reading the value of the MDIO bit.
2739 ctrl = E1000_READ_REG(hw, CTRL);
2741 /* Clear MDIO_DIR (SWDPIO1) to indicate this bit is to be used as input. */
2742 ctrl &= ~E1000_CTRL_MDIO_DIR;
2743 ctrl &= ~E1000_CTRL_MDIO;
2745 E1000_WRITE_REG(hw, CTRL, ctrl);
2746 E1000_WRITE_FLUSH(hw);
2748 /* Raise and Lower the clock before reading in the data. This accounts for
2749 * the turnaround bits. The first clock occurred when we clocked out the
2750 * last bit of the Register Address.
2752 e1000_raise_mdi_clk(hw, &ctrl);
2753 e1000_lower_mdi_clk(hw, &ctrl);
2755 for(data = 0, i = 0; i < 16; i++) {
2757 e1000_raise_mdi_clk(hw, &ctrl);
2758 ctrl = E1000_READ_REG(hw, CTRL);
2759 /* Check to see if we shifted in a "1". */
2760 if(ctrl & E1000_CTRL_MDIO) data |= 1;
2761 e1000_lower_mdi_clk(hw, &ctrl);
2764 e1000_raise_mdi_clk(hw, &ctrl);
2765 e1000_lower_mdi_clk(hw, &ctrl);
2770 /*****************************************************************************
2771 * Reads the value from a PHY register, if the value is on a specific non zero
2772 * page, sets the page first.
2773 * hw - Struct containing variables accessed by shared code
2774 * reg_addr - address of the PHY register to read
2775 ******************************************************************************/
2777 e1000_read_phy_reg(struct e1000_hw *hw,
2783 DEBUGFUNC("e1000_read_phy_reg");
2785 if((hw->phy_type == e1000_phy_igp ||
2786 hw->phy_type == e1000_phy_igp_2) &&
2787 (reg_addr > MAX_PHY_MULTI_PAGE_REG)) {
2788 ret_val = e1000_write_phy_reg_ex(hw, IGP01E1000_PHY_PAGE_SELECT,
2789 (uint16_t)reg_addr);
2795 ret_val = e1000_read_phy_reg_ex(hw, MAX_PHY_REG_ADDRESS & reg_addr,
2802 e1000_read_phy_reg_ex(struct e1000_hw *hw,
2808 const uint32_t phy_addr = 1;
2810 DEBUGFUNC("e1000_read_phy_reg_ex");
2812 if(reg_addr > MAX_PHY_REG_ADDRESS) {
2813 DEBUGOUT1("PHY Address %d is out of range\n", reg_addr);
2814 return -E1000_ERR_PARAM;
2817 if(hw->mac_type > e1000_82543) {
2818 /* Set up Op-code, Phy Address, and register address in the MDI
2819 * Control register. The MAC will take care of interfacing with the
2820 * PHY to retrieve the desired data.
2822 mdic = ((reg_addr << E1000_MDIC_REG_SHIFT) |
2823 (phy_addr << E1000_MDIC_PHY_SHIFT) |
2824 (E1000_MDIC_OP_READ));
2826 E1000_WRITE_REG(hw, MDIC, mdic);
2828 /* Poll the ready bit to see if the MDI read completed */
2829 for(i = 0; i < 64; i++) {
2831 mdic = E1000_READ_REG(hw, MDIC);
2832 if(mdic & E1000_MDIC_READY) break;
2834 if(!(mdic & E1000_MDIC_READY)) {
2835 DEBUGOUT("MDI Read did not complete\n");
2836 return -E1000_ERR_PHY;
2838 if(mdic & E1000_MDIC_ERROR) {
2839 DEBUGOUT("MDI Error\n");
2840 return -E1000_ERR_PHY;
2842 *phy_data = (uint16_t) mdic;
2844 /* We must first send a preamble through the MDIO pin to signal the
2845 * beginning of an MII instruction. This is done by sending 32
2846 * consecutive "1" bits.
2848 e1000_shift_out_mdi_bits(hw, PHY_PREAMBLE, PHY_PREAMBLE_SIZE);
2850 /* Now combine the next few fields that are required for a read
2851 * operation. We use this method instead of calling the
2852 * e1000_shift_out_mdi_bits routine five different times. The format of
2853 * a MII read instruction consists of a shift out of 14 bits and is
2854 * defined as follows:
2855 * <Preamble><SOF><Op Code><Phy Addr><Reg Addr>
2856 * followed by a shift in of 18 bits. This first two bits shifted in
2857 * are TurnAround bits used to avoid contention on the MDIO pin when a
2858 * READ operation is performed. These two bits are thrown away
2859 * followed by a shift in of 16 bits which contains the desired data.
2861 mdic = ((reg_addr) | (phy_addr << 5) |
2862 (PHY_OP_READ << 10) | (PHY_SOF << 12));
2864 e1000_shift_out_mdi_bits(hw, mdic, 14);
2866 /* Now that we've shifted out the read command to the MII, we need to
2867 * "shift in" the 16-bit value (18 total bits) of the requested PHY
2870 *phy_data = e1000_shift_in_mdi_bits(hw);
2872 return E1000_SUCCESS;
2875 /******************************************************************************
2876 * Writes a value to a PHY register
2878 * hw - Struct containing variables accessed by shared code
2879 * reg_addr - address of the PHY register to write
2880 * data - data to write to the PHY
2881 ******************************************************************************/
2883 e1000_write_phy_reg(struct e1000_hw *hw,
2889 DEBUGFUNC("e1000_write_phy_reg");
2891 if((hw->phy_type == e1000_phy_igp ||
2892 hw->phy_type == e1000_phy_igp_2) &&
2893 (reg_addr > MAX_PHY_MULTI_PAGE_REG)) {
2894 ret_val = e1000_write_phy_reg_ex(hw, IGP01E1000_PHY_PAGE_SELECT,
2895 (uint16_t)reg_addr);
2901 ret_val = e1000_write_phy_reg_ex(hw, MAX_PHY_REG_ADDRESS & reg_addr,
2908 e1000_write_phy_reg_ex(struct e1000_hw *hw,
2914 const uint32_t phy_addr = 1;
2916 DEBUGFUNC("e1000_write_phy_reg_ex");
2918 if(reg_addr > MAX_PHY_REG_ADDRESS) {
2919 DEBUGOUT1("PHY Address %d is out of range\n", reg_addr);
2920 return -E1000_ERR_PARAM;
2923 if(hw->mac_type > e1000_82543) {
2924 /* Set up Op-code, Phy Address, register address, and data intended
2925 * for the PHY register in the MDI Control register. The MAC will take
2926 * care of interfacing with the PHY to send the desired data.
2928 mdic = (((uint32_t) phy_data) |
2929 (reg_addr << E1000_MDIC_REG_SHIFT) |
2930 (phy_addr << E1000_MDIC_PHY_SHIFT) |
2931 (E1000_MDIC_OP_WRITE));
2933 E1000_WRITE_REG(hw, MDIC, mdic);
2935 /* Poll the ready bit to see if the MDI read completed */
2936 for(i = 0; i < 640; i++) {
2938 mdic = E1000_READ_REG(hw, MDIC);
2939 if(mdic & E1000_MDIC_READY) break;
2941 if(!(mdic & E1000_MDIC_READY)) {
2942 DEBUGOUT("MDI Write did not complete\n");
2943 return -E1000_ERR_PHY;
2946 /* We'll need to use the SW defined pins to shift the write command
2947 * out to the PHY. We first send a preamble to the PHY to signal the
2948 * beginning of the MII instruction. This is done by sending 32
2949 * consecutive "1" bits.
2951 e1000_shift_out_mdi_bits(hw, PHY_PREAMBLE, PHY_PREAMBLE_SIZE);
2953 /* Now combine the remaining required fields that will indicate a
2954 * write operation. We use this method instead of calling the
2955 * e1000_shift_out_mdi_bits routine for each field in the command. The
2956 * format of a MII write instruction is as follows:
2957 * <Preamble><SOF><Op Code><Phy Addr><Reg Addr><Turnaround><Data>.
2959 mdic = ((PHY_TURNAROUND) | (reg_addr << 2) | (phy_addr << 7) |
2960 (PHY_OP_WRITE << 12) | (PHY_SOF << 14));
2962 mdic |= (uint32_t) phy_data;
2964 e1000_shift_out_mdi_bits(hw, mdic, 32);
2967 return E1000_SUCCESS;
2971 /******************************************************************************
2972 * Returns the PHY to the power-on reset state
2974 * hw - Struct containing variables accessed by shared code
2975 ******************************************************************************/
2977 e1000_phy_hw_reset(struct e1000_hw *hw)
2979 uint32_t ctrl, ctrl_ext;
2983 DEBUGFUNC("e1000_phy_hw_reset");
2985 /* In the case of the phy reset being blocked, it's not an error, we
2986 * simply return success without performing the reset. */
2987 ret_val = e1000_check_phy_reset_block(hw);
2989 return E1000_SUCCESS;
2991 DEBUGOUT("Resetting Phy...\n");
2993 if(hw->mac_type > e1000_82543) {
2994 /* Read the device control register and assert the E1000_CTRL_PHY_RST
2995 * bit. Then, take it out of reset.
2996 * For pre-e1000_82571 hardware, we delay for 10ms between the assert
2997 * and deassert. For e1000_82571 hardware and later, we instead delay
2998 * for 10ms after the deassertion.
3000 ctrl = E1000_READ_REG(hw, CTRL);
3001 E1000_WRITE_REG(hw, CTRL, ctrl | E1000_CTRL_PHY_RST);
3002 E1000_WRITE_FLUSH(hw);
3004 if (hw->mac_type < e1000_82571)
3009 E1000_WRITE_REG(hw, CTRL, ctrl);
3010 E1000_WRITE_FLUSH(hw);
3012 if (hw->mac_type >= e1000_82571)
3015 /* Read the Extended Device Control Register, assert the PHY_RESET_DIR
3016 * bit to put the PHY into reset. Then, take it out of reset.
3018 ctrl_ext = E1000_READ_REG(hw, CTRL_EXT);
3019 ctrl_ext |= E1000_CTRL_EXT_SDP4_DIR;
3020 ctrl_ext &= ~E1000_CTRL_EXT_SDP4_DATA;
3021 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
3022 E1000_WRITE_FLUSH(hw);
3024 ctrl_ext |= E1000_CTRL_EXT_SDP4_DATA;
3025 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
3026 E1000_WRITE_FLUSH(hw);
3030 if((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_82547)) {
3031 /* Configure activity LED after PHY reset */
3032 led_ctrl = E1000_READ_REG(hw, LEDCTL);
3033 led_ctrl &= IGP_ACTIVITY_LED_MASK;
3034 led_ctrl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE);
3035 E1000_WRITE_REG(hw, LEDCTL, led_ctrl);
3038 /* Wait for FW to finish PHY configuration. */
3039 ret_val = e1000_get_phy_cfg_done(hw);
3044 /******************************************************************************
3047 * hw - Struct containing variables accessed by shared code
3049 * Sets bit 15 of the MII Control regiser
3050 ******************************************************************************/
3052 e1000_phy_reset(struct e1000_hw *hw)
3057 DEBUGFUNC("e1000_phy_reset");
3059 /* In the case of the phy reset being blocked, it's not an error, we
3060 * simply return success without performing the reset. */
3061 ret_val = e1000_check_phy_reset_block(hw);
3063 return E1000_SUCCESS;
3065 switch (hw->mac_type) {
3066 case e1000_82541_rev_2:
3069 ret_val = e1000_phy_hw_reset(hw);
3074 ret_val = e1000_read_phy_reg(hw, PHY_CTRL, &phy_data);
3078 phy_data |= MII_CR_RESET;
3079 ret_val = e1000_write_phy_reg(hw, PHY_CTRL, phy_data);
3087 if(hw->phy_type == e1000_phy_igp || hw->phy_type == e1000_phy_igp_2)
3088 e1000_phy_init_script(hw);
3090 return E1000_SUCCESS;
3093 /******************************************************************************
3094 * Probes the expected PHY address for known PHY IDs
3096 * hw - Struct containing variables accessed by shared code
3097 ******************************************************************************/
3099 e1000_detect_gig_phy(struct e1000_hw *hw)
3101 int32_t phy_init_status, ret_val;
3102 uint16_t phy_id_high, phy_id_low;
3103 boolean_t match = FALSE;
3105 DEBUGFUNC("e1000_detect_gig_phy");
3107 /* The 82571 firmware may still be configuring the PHY. In this
3108 * case, we cannot access the PHY until the configuration is done. So
3109 * we explicitly set the PHY values. */
3110 if(hw->mac_type == e1000_82571 ||
3111 hw->mac_type == e1000_82572) {
3112 hw->phy_id = IGP01E1000_I_PHY_ID;
3113 hw->phy_type = e1000_phy_igp_2;
3114 return E1000_SUCCESS;
3117 /* Read the PHY ID Registers to identify which PHY is onboard. */
3118 ret_val = e1000_read_phy_reg(hw, PHY_ID1, &phy_id_high);
3122 hw->phy_id = (uint32_t) (phy_id_high << 16);
3124 ret_val = e1000_read_phy_reg(hw, PHY_ID2, &phy_id_low);
3128 hw->phy_id |= (uint32_t) (phy_id_low & PHY_REVISION_MASK);
3129 hw->phy_revision = (uint32_t) phy_id_low & ~PHY_REVISION_MASK;
3131 switch(hw->mac_type) {
3133 if(hw->phy_id == M88E1000_E_PHY_ID) match = TRUE;
3136 if(hw->phy_id == M88E1000_I_PHY_ID) match = TRUE;
3140 case e1000_82545_rev_3:
3142 case e1000_82546_rev_3:
3143 if(hw->phy_id == M88E1011_I_PHY_ID) match = TRUE;
3146 case e1000_82541_rev_2:
3148 case e1000_82547_rev_2:
3149 if(hw->phy_id == IGP01E1000_I_PHY_ID) match = TRUE;
3152 if(hw->phy_id == M88E1111_I_PHY_ID) match = TRUE;
3155 DEBUGOUT1("Invalid MAC type %d\n", hw->mac_type);
3156 return -E1000_ERR_CONFIG;
3158 phy_init_status = e1000_set_phy_type(hw);
3160 if ((match) && (phy_init_status == E1000_SUCCESS)) {
3161 DEBUGOUT1("PHY ID 0x%X detected\n", hw->phy_id);
3162 return E1000_SUCCESS;
3164 DEBUGOUT1("Invalid PHY ID 0x%X\n", hw->phy_id);
3165 return -E1000_ERR_PHY;
3168 /******************************************************************************
3169 * Resets the PHY's DSP
3171 * hw - Struct containing variables accessed by shared code
3172 ******************************************************************************/
3174 e1000_phy_reset_dsp(struct e1000_hw *hw)
3177 DEBUGFUNC("e1000_phy_reset_dsp");
3180 ret_val = e1000_write_phy_reg(hw, 29, 0x001d);
3182 ret_val = e1000_write_phy_reg(hw, 30, 0x00c1);
3184 ret_val = e1000_write_phy_reg(hw, 30, 0x0000);
3186 ret_val = E1000_SUCCESS;
3192 /******************************************************************************
3193 * Get PHY information from various PHY registers for igp PHY only.
3195 * hw - Struct containing variables accessed by shared code
3196 * phy_info - PHY information structure
3197 ******************************************************************************/
3199 e1000_phy_igp_get_info(struct e1000_hw *hw,
3200 struct e1000_phy_info *phy_info)
3203 uint16_t phy_data, polarity, min_length, max_length, average;
3205 DEBUGFUNC("e1000_phy_igp_get_info");
3207 /* The downshift status is checked only once, after link is established,
3208 * and it stored in the hw->speed_downgraded parameter. */
3209 phy_info->downshift = (e1000_downshift)hw->speed_downgraded;
3211 /* IGP01E1000 does not need to support it. */
3212 phy_info->extended_10bt_distance = e1000_10bt_ext_dist_enable_normal;
3214 /* IGP01E1000 always correct polarity reversal */
3215 phy_info->polarity_correction = e1000_polarity_reversal_enabled;
3217 /* Check polarity status */
3218 ret_val = e1000_check_polarity(hw, &polarity);
3222 phy_info->cable_polarity = polarity;
3224 ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_STATUS, &phy_data);
3228 phy_info->mdix_mode = (phy_data & IGP01E1000_PSSR_MDIX) >>
3229 IGP01E1000_PSSR_MDIX_SHIFT;
3231 if((phy_data & IGP01E1000_PSSR_SPEED_MASK) ==
3232 IGP01E1000_PSSR_SPEED_1000MBPS) {
3233 /* Local/Remote Receiver Information are only valid at 1000 Mbps */
3234 ret_val = e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_data);
3238 phy_info->local_rx = (phy_data & SR_1000T_LOCAL_RX_STATUS) >>
3239 SR_1000T_LOCAL_RX_STATUS_SHIFT;
3240 phy_info->remote_rx = (phy_data & SR_1000T_REMOTE_RX_STATUS) >>
3241 SR_1000T_REMOTE_RX_STATUS_SHIFT;
3243 /* Get cable length */
3244 ret_val = e1000_get_cable_length(hw, &min_length, &max_length);
3248 /* Translate to old method */
3249 average = (max_length + min_length) / 2;
3251 if(average <= e1000_igp_cable_length_50)
3252 phy_info->cable_length = e1000_cable_length_50;
3253 else if(average <= e1000_igp_cable_length_80)
3254 phy_info->cable_length = e1000_cable_length_50_80;
3255 else if(average <= e1000_igp_cable_length_110)
3256 phy_info->cable_length = e1000_cable_length_80_110;
3257 else if(average <= e1000_igp_cable_length_140)
3258 phy_info->cable_length = e1000_cable_length_110_140;
3260 phy_info->cable_length = e1000_cable_length_140;
3263 return E1000_SUCCESS;
3266 /******************************************************************************
3267 * Get PHY information from various PHY registers fot m88 PHY only.
3269 * hw - Struct containing variables accessed by shared code
3270 * phy_info - PHY information structure
3271 ******************************************************************************/
3273 e1000_phy_m88_get_info(struct e1000_hw *hw,
3274 struct e1000_phy_info *phy_info)
3277 uint16_t phy_data, polarity;
3279 DEBUGFUNC("e1000_phy_m88_get_info");
3281 /* The downshift status is checked only once, after link is established,
3282 * and it stored in the hw->speed_downgraded parameter. */
3283 phy_info->downshift = (e1000_downshift)hw->speed_downgraded;
3285 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
3289 phy_info->extended_10bt_distance =
3290 (phy_data & M88E1000_PSCR_10BT_EXT_DIST_ENABLE) >>
3291 M88E1000_PSCR_10BT_EXT_DIST_ENABLE_SHIFT;
3292 phy_info->polarity_correction =
3293 (phy_data & M88E1000_PSCR_POLARITY_REVERSAL) >>
3294 M88E1000_PSCR_POLARITY_REVERSAL_SHIFT;
3296 /* Check polarity status */
3297 ret_val = e1000_check_polarity(hw, &polarity);
3300 phy_info->cable_polarity = polarity;
3302 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS, &phy_data);
3306 phy_info->mdix_mode = (phy_data & M88E1000_PSSR_MDIX) >>
3307 M88E1000_PSSR_MDIX_SHIFT;
3309 if ((phy_data & M88E1000_PSSR_SPEED) == M88E1000_PSSR_1000MBS) {
3310 /* Cable Length Estimation and Local/Remote Receiver Information
3311 * are only valid at 1000 Mbps.
3313 phy_info->cable_length = ((phy_data & M88E1000_PSSR_CABLE_LENGTH) >>
3314 M88E1000_PSSR_CABLE_LENGTH_SHIFT);
3316 ret_val = e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_data);
3320 phy_info->local_rx = (phy_data & SR_1000T_LOCAL_RX_STATUS) >>
3321 SR_1000T_LOCAL_RX_STATUS_SHIFT;
3323 phy_info->remote_rx = (phy_data & SR_1000T_REMOTE_RX_STATUS) >>
3324 SR_1000T_REMOTE_RX_STATUS_SHIFT;
3327 return E1000_SUCCESS;
3330 /******************************************************************************
3331 * Get PHY information from various PHY registers
3333 * hw - Struct containing variables accessed by shared code
3334 * phy_info - PHY information structure
3335 ******************************************************************************/
3337 e1000_phy_get_info(struct e1000_hw *hw,
3338 struct e1000_phy_info *phy_info)
3343 DEBUGFUNC("e1000_phy_get_info");
3345 phy_info->cable_length = e1000_cable_length_undefined;
3346 phy_info->extended_10bt_distance = e1000_10bt_ext_dist_enable_undefined;
3347 phy_info->cable_polarity = e1000_rev_polarity_undefined;
3348 phy_info->downshift = e1000_downshift_undefined;
3349 phy_info->polarity_correction = e1000_polarity_reversal_undefined;
3350 phy_info->mdix_mode = e1000_auto_x_mode_undefined;
3351 phy_info->local_rx = e1000_1000t_rx_status_undefined;
3352 phy_info->remote_rx = e1000_1000t_rx_status_undefined;
3354 if(hw->media_type != e1000_media_type_copper) {
3355 DEBUGOUT("PHY info is only valid for copper media\n");
3356 return -E1000_ERR_CONFIG;
3359 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
3363 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
3367 if((phy_data & MII_SR_LINK_STATUS) != MII_SR_LINK_STATUS) {
3368 DEBUGOUT("PHY info is only valid if link is up\n");
3369 return -E1000_ERR_CONFIG;
3372 if(hw->phy_type == e1000_phy_igp ||
3373 hw->phy_type == e1000_phy_igp_2)
3374 return e1000_phy_igp_get_info(hw, phy_info);
3376 return e1000_phy_m88_get_info(hw, phy_info);
3380 e1000_validate_mdi_setting(struct e1000_hw *hw)
3382 DEBUGFUNC("e1000_validate_mdi_settings");
3384 if(!hw->autoneg && (hw->mdix == 0 || hw->mdix == 3)) {
3385 DEBUGOUT("Invalid MDI setting detected\n");
3387 return -E1000_ERR_CONFIG;
3389 return E1000_SUCCESS;
3393 /******************************************************************************
3394 * Sets up eeprom variables in the hw struct. Must be called after mac_type
3397 * hw - Struct containing variables accessed by shared code
3398 *****************************************************************************/
3400 e1000_init_eeprom_params(struct e1000_hw *hw)
3402 struct e1000_eeprom_info *eeprom = &hw->eeprom;
3403 uint32_t eecd = E1000_READ_REG(hw, EECD);
3404 int32_t ret_val = E1000_SUCCESS;
3405 uint16_t eeprom_size;
3407 DEBUGFUNC("e1000_init_eeprom_params");
3409 switch (hw->mac_type) {
3410 case e1000_82542_rev2_0:
3411 case e1000_82542_rev2_1:
3414 eeprom->type = e1000_eeprom_microwire;
3415 eeprom->word_size = 64;
3416 eeprom->opcode_bits = 3;
3417 eeprom->address_bits = 6;
3418 eeprom->delay_usec = 50;
3419 eeprom->use_eerd = FALSE;
3420 eeprom->use_eewr = FALSE;
3424 case e1000_82545_rev_3:
3426 case e1000_82546_rev_3:
3427 eeprom->type = e1000_eeprom_microwire;
3428 eeprom->opcode_bits = 3;
3429 eeprom->delay_usec = 50;
3430 if(eecd & E1000_EECD_SIZE) {
3431 eeprom->word_size = 256;
3432 eeprom->address_bits = 8;
3434 eeprom->word_size = 64;
3435 eeprom->address_bits = 6;
3437 eeprom->use_eerd = FALSE;
3438 eeprom->use_eewr = FALSE;
3441 case e1000_82541_rev_2:
3443 case e1000_82547_rev_2:
3444 if (eecd & E1000_EECD_TYPE) {
3445 eeprom->type = e1000_eeprom_spi;
3446 eeprom->opcode_bits = 8;
3447 eeprom->delay_usec = 1;
3448 if (eecd & E1000_EECD_ADDR_BITS) {
3449 eeprom->page_size = 32;
3450 eeprom->address_bits = 16;
3452 eeprom->page_size = 8;
3453 eeprom->address_bits = 8;
3456 eeprom->type = e1000_eeprom_microwire;
3457 eeprom->opcode_bits = 3;
3458 eeprom->delay_usec = 50;
3459 if (eecd & E1000_EECD_ADDR_BITS) {
3460 eeprom->word_size = 256;
3461 eeprom->address_bits = 8;
3463 eeprom->word_size = 64;
3464 eeprom->address_bits = 6;
3467 eeprom->use_eerd = FALSE;
3468 eeprom->use_eewr = FALSE;
3472 eeprom->type = e1000_eeprom_spi;
3473 eeprom->opcode_bits = 8;
3474 eeprom->delay_usec = 1;
3475 if (eecd & E1000_EECD_ADDR_BITS) {
3476 eeprom->page_size = 32;
3477 eeprom->address_bits = 16;
3479 eeprom->page_size = 8;
3480 eeprom->address_bits = 8;
3482 eeprom->use_eerd = FALSE;
3483 eeprom->use_eewr = FALSE;
3486 eeprom->type = e1000_eeprom_spi;
3487 eeprom->opcode_bits = 8;
3488 eeprom->delay_usec = 1;
3489 if (eecd & E1000_EECD_ADDR_BITS) {
3490 eeprom->page_size = 32;
3491 eeprom->address_bits = 16;
3493 eeprom->page_size = 8;
3494 eeprom->address_bits = 8;
3496 eeprom->use_eerd = TRUE;
3497 eeprom->use_eewr = TRUE;
3498 if(e1000_is_onboard_nvm_eeprom(hw) == FALSE) {
3499 eeprom->type = e1000_eeprom_flash;
3500 eeprom->word_size = 2048;
3502 /* Ensure that the Autonomous FLASH update bit is cleared due to
3503 * Flash update issue on parts which use a FLASH for NVM. */
3504 eecd &= ~E1000_EECD_AUPDEN;
3505 E1000_WRITE_REG(hw, EECD, eecd);
3512 if (eeprom->type == e1000_eeprom_spi) {
3513 /* eeprom_size will be an enum [0..8] that maps to eeprom sizes 128B to
3514 * 32KB (incremented by powers of 2).
3516 if(hw->mac_type <= e1000_82547_rev_2) {
3517 /* Set to default value for initial eeprom read. */
3518 eeprom->word_size = 64;
3519 ret_val = e1000_read_eeprom(hw, EEPROM_CFG, 1, &eeprom_size);
3522 eeprom_size = (eeprom_size & EEPROM_SIZE_MASK) >> EEPROM_SIZE_SHIFT;
3523 /* 256B eeprom size was not supported in earlier hardware, so we
3524 * bump eeprom_size up one to ensure that "1" (which maps to 256B)
3525 * is never the result used in the shifting logic below. */
3529 eeprom_size = (uint16_t)((eecd & E1000_EECD_SIZE_EX_MASK) >>
3530 E1000_EECD_SIZE_EX_SHIFT);
3533 eeprom->word_size = 1 << (eeprom_size + EEPROM_WORD_SIZE_SHIFT);
3538 /******************************************************************************
3539 * Raises the EEPROM's clock input.
3541 * hw - Struct containing variables accessed by shared code
3542 * eecd - EECD's current value
3543 *****************************************************************************/
3545 e1000_raise_ee_clk(struct e1000_hw *hw,
3548 /* Raise the clock input to the EEPROM (by setting the SK bit), and then
3549 * wait <delay> microseconds.
3551 *eecd = *eecd | E1000_EECD_SK;
3552 E1000_WRITE_REG(hw, EECD, *eecd);
3553 E1000_WRITE_FLUSH(hw);
3554 udelay(hw->eeprom.delay_usec);
3557 /******************************************************************************
3558 * Lowers the EEPROM's clock input.
3560 * hw - Struct containing variables accessed by shared code
3561 * eecd - EECD's current value
3562 *****************************************************************************/
3564 e1000_lower_ee_clk(struct e1000_hw *hw,
3567 /* Lower the clock input to the EEPROM (by clearing the SK bit), and then
3568 * wait 50 microseconds.
3570 *eecd = *eecd & ~E1000_EECD_SK;
3571 E1000_WRITE_REG(hw, EECD, *eecd);
3572 E1000_WRITE_FLUSH(hw);
3573 udelay(hw->eeprom.delay_usec);
3576 /******************************************************************************
3577 * Shift data bits out to the EEPROM.
3579 * hw - Struct containing variables accessed by shared code
3580 * data - data to send to the EEPROM
3581 * count - number of bits to shift out
3582 *****************************************************************************/
3584 e1000_shift_out_ee_bits(struct e1000_hw *hw,
3588 struct e1000_eeprom_info *eeprom = &hw->eeprom;
3592 /* We need to shift "count" bits out to the EEPROM. So, value in the
3593 * "data" parameter will be shifted out to the EEPROM one bit at a time.
3594 * In order to do this, "data" must be broken down into bits.
3596 mask = 0x01 << (count - 1);
3597 eecd = E1000_READ_REG(hw, EECD);
3598 if (eeprom->type == e1000_eeprom_microwire) {
3599 eecd &= ~E1000_EECD_DO;
3600 } else if (eeprom->type == e1000_eeprom_spi) {
3601 eecd |= E1000_EECD_DO;
3604 /* A "1" is shifted out to the EEPROM by setting bit "DI" to a "1",
3605 * and then raising and then lowering the clock (the SK bit controls
3606 * the clock input to the EEPROM). A "0" is shifted out to the EEPROM
3607 * by setting "DI" to "0" and then raising and then lowering the clock.
3609 eecd &= ~E1000_EECD_DI;
3612 eecd |= E1000_EECD_DI;
3614 E1000_WRITE_REG(hw, EECD, eecd);
3615 E1000_WRITE_FLUSH(hw);
3617 udelay(eeprom->delay_usec);
3619 e1000_raise_ee_clk(hw, &eecd);
3620 e1000_lower_ee_clk(hw, &eecd);
3626 /* We leave the "DI" bit set to "0" when we leave this routine. */
3627 eecd &= ~E1000_EECD_DI;
3628 E1000_WRITE_REG(hw, EECD, eecd);
3631 /******************************************************************************
3632 * Shift data bits in from the EEPROM
3634 * hw - Struct containing variables accessed by shared code
3635 *****************************************************************************/
3637 e1000_shift_in_ee_bits(struct e1000_hw *hw,
3644 /* In order to read a register from the EEPROM, we need to shift 'count'
3645 * bits in from the EEPROM. Bits are "shifted in" by raising the clock
3646 * input to the EEPROM (setting the SK bit), and then reading the value of
3647 * the "DO" bit. During this "shifting in" process the "DI" bit should
3651 eecd = E1000_READ_REG(hw, EECD);
3653 eecd &= ~(E1000_EECD_DO | E1000_EECD_DI);
3656 for(i = 0; i < count; i++) {
3658 e1000_raise_ee_clk(hw, &eecd);
3660 eecd = E1000_READ_REG(hw, EECD);
3662 eecd &= ~(E1000_EECD_DI);
3663 if(eecd & E1000_EECD_DO)
3666 e1000_lower_ee_clk(hw, &eecd);
3672 /******************************************************************************
3673 * Prepares EEPROM for access
3675 * hw - Struct containing variables accessed by shared code
3677 * Lowers EEPROM clock. Clears input pin. Sets the chip select pin. This
3678 * function should be called before issuing a command to the EEPROM.
3679 *****************************************************************************/
3681 e1000_acquire_eeprom(struct e1000_hw *hw)
3683 struct e1000_eeprom_info *eeprom = &hw->eeprom;
3686 DEBUGFUNC("e1000_acquire_eeprom");
3688 if(e1000_get_hw_eeprom_semaphore(hw))
3689 return -E1000_ERR_EEPROM;
3691 eecd = E1000_READ_REG(hw, EECD);
3693 if (hw->mac_type != e1000_82573) {
3694 /* Request EEPROM Access */
3695 if(hw->mac_type > e1000_82544) {
3696 eecd |= E1000_EECD_REQ;
3697 E1000_WRITE_REG(hw, EECD, eecd);
3698 eecd = E1000_READ_REG(hw, EECD);
3699 while((!(eecd & E1000_EECD_GNT)) &&
3700 (i < E1000_EEPROM_GRANT_ATTEMPTS)) {
3703 eecd = E1000_READ_REG(hw, EECD);
3705 if(!(eecd & E1000_EECD_GNT)) {
3706 eecd &= ~E1000_EECD_REQ;
3707 E1000_WRITE_REG(hw, EECD, eecd);
3708 DEBUGOUT("Could not acquire EEPROM grant\n");
3709 e1000_put_hw_eeprom_semaphore(hw);
3710 return -E1000_ERR_EEPROM;
3715 /* Setup EEPROM for Read/Write */
3717 if (eeprom->type == e1000_eeprom_microwire) {
3718 /* Clear SK and DI */
3719 eecd &= ~(E1000_EECD_DI | E1000_EECD_SK);
3720 E1000_WRITE_REG(hw, EECD, eecd);
3723 eecd |= E1000_EECD_CS;
3724 E1000_WRITE_REG(hw, EECD, eecd);
3725 } else if (eeprom->type == e1000_eeprom_spi) {
3726 /* Clear SK and CS */
3727 eecd &= ~(E1000_EECD_CS | E1000_EECD_SK);
3728 E1000_WRITE_REG(hw, EECD, eecd);
3732 return E1000_SUCCESS;
3735 /******************************************************************************
3736 * Returns EEPROM to a "standby" state
3738 * hw - Struct containing variables accessed by shared code
3739 *****************************************************************************/
3741 e1000_standby_eeprom(struct e1000_hw *hw)
3743 struct e1000_eeprom_info *eeprom = &hw->eeprom;
3746 eecd = E1000_READ_REG(hw, EECD);
3748 if(eeprom->type == e1000_eeprom_microwire) {
3749 eecd &= ~(E1000_EECD_CS | E1000_EECD_SK);
3750 E1000_WRITE_REG(hw, EECD, eecd);
3751 E1000_WRITE_FLUSH(hw);
3752 udelay(eeprom->delay_usec);
3755 eecd |= E1000_EECD_SK;
3756 E1000_WRITE_REG(hw, EECD, eecd);
3757 E1000_WRITE_FLUSH(hw);
3758 udelay(eeprom->delay_usec);
3761 eecd |= E1000_EECD_CS;
3762 E1000_WRITE_REG(hw, EECD, eecd);
3763 E1000_WRITE_FLUSH(hw);
3764 udelay(eeprom->delay_usec);
3767 eecd &= ~E1000_EECD_SK;
3768 E1000_WRITE_REG(hw, EECD, eecd);
3769 E1000_WRITE_FLUSH(hw);
3770 udelay(eeprom->delay_usec);
3771 } else if(eeprom->type == e1000_eeprom_spi) {
3772 /* Toggle CS to flush commands */
3773 eecd |= E1000_EECD_CS;
3774 E1000_WRITE_REG(hw, EECD, eecd);
3775 E1000_WRITE_FLUSH(hw);
3776 udelay(eeprom->delay_usec);
3777 eecd &= ~E1000_EECD_CS;
3778 E1000_WRITE_REG(hw, EECD, eecd);
3779 E1000_WRITE_FLUSH(hw);
3780 udelay(eeprom->delay_usec);
3784 /******************************************************************************
3785 * Terminates a command by inverting the EEPROM's chip select pin
3787 * hw - Struct containing variables accessed by shared code
3788 *****************************************************************************/
3790 e1000_release_eeprom(struct e1000_hw *hw)
3794 DEBUGFUNC("e1000_release_eeprom");
3796 eecd = E1000_READ_REG(hw, EECD);
3798 if (hw->eeprom.type == e1000_eeprom_spi) {
3799 eecd |= E1000_EECD_CS; /* Pull CS high */
3800 eecd &= ~E1000_EECD_SK; /* Lower SCK */
3802 E1000_WRITE_REG(hw, EECD, eecd);
3804 udelay(hw->eeprom.delay_usec);
3805 } else if(hw->eeprom.type == e1000_eeprom_microwire) {
3806 /* cleanup eeprom */
3808 /* CS on Microwire is active-high */
3809 eecd &= ~(E1000_EECD_CS | E1000_EECD_DI);
3811 E1000_WRITE_REG(hw, EECD, eecd);
3813 /* Rising edge of clock */
3814 eecd |= E1000_EECD_SK;
3815 E1000_WRITE_REG(hw, EECD, eecd);
3816 E1000_WRITE_FLUSH(hw);
3817 udelay(hw->eeprom.delay_usec);
3819 /* Falling edge of clock */
3820 eecd &= ~E1000_EECD_SK;
3821 E1000_WRITE_REG(hw, EECD, eecd);
3822 E1000_WRITE_FLUSH(hw);
3823 udelay(hw->eeprom.delay_usec);
3826 /* Stop requesting EEPROM access */
3827 if(hw->mac_type > e1000_82544) {
3828 eecd &= ~E1000_EECD_REQ;
3829 E1000_WRITE_REG(hw, EECD, eecd);
3832 e1000_put_hw_eeprom_semaphore(hw);
3835 /******************************************************************************
3836 * Reads a 16 bit word from the EEPROM.
3838 * hw - Struct containing variables accessed by shared code
3839 *****************************************************************************/
3841 e1000_spi_eeprom_ready(struct e1000_hw *hw)
3843 uint16_t retry_count = 0;
3844 uint8_t spi_stat_reg;
3846 DEBUGFUNC("e1000_spi_eeprom_ready");
3848 /* Read "Status Register" repeatedly until the LSB is cleared. The
3849 * EEPROM will signal that the command has been completed by clearing
3850 * bit 0 of the internal status register. If it's not cleared within
3851 * 5 milliseconds, then error out.
3855 e1000_shift_out_ee_bits(hw, EEPROM_RDSR_OPCODE_SPI,
3856 hw->eeprom.opcode_bits);
3857 spi_stat_reg = (uint8_t)e1000_shift_in_ee_bits(hw, 8);
3858 if (!(spi_stat_reg & EEPROM_STATUS_RDY_SPI))
3864 e1000_standby_eeprom(hw);
3865 } while(retry_count < EEPROM_MAX_RETRY_SPI);
3867 /* ATMEL SPI write time could vary from 0-20mSec on 3.3V devices (and
3868 * only 0-5mSec on 5V devices)
3870 if(retry_count >= EEPROM_MAX_RETRY_SPI) {
3871 DEBUGOUT("SPI EEPROM Status error\n");
3872 return -E1000_ERR_EEPROM;
3875 return E1000_SUCCESS;
3878 /******************************************************************************
3879 * Reads a 16 bit word from the EEPROM.
3881 * hw - Struct containing variables accessed by shared code
3882 * offset - offset of word in the EEPROM to read
3883 * data - word read from the EEPROM
3884 * words - number of words to read
3885 *****************************************************************************/
3887 e1000_read_eeprom(struct e1000_hw *hw,
3892 struct e1000_eeprom_info *eeprom = &hw->eeprom;
3896 DEBUGFUNC("e1000_read_eeprom");
3898 /* A check for invalid values: offset too large, too many words, and not
3901 if((offset >= eeprom->word_size) || (words > eeprom->word_size - offset) ||
3903 DEBUGOUT("\"words\" parameter out of bounds\n");
3904 return -E1000_ERR_EEPROM;
3907 /* FLASH reads without acquiring the semaphore are safe */
3908 if (e1000_is_onboard_nvm_eeprom(hw) == TRUE &&
3909 hw->eeprom.use_eerd == FALSE) {
3910 switch (hw->mac_type) {
3912 /* Prepare the EEPROM for reading */
3913 if (e1000_acquire_eeprom(hw) != E1000_SUCCESS)
3914 return -E1000_ERR_EEPROM;
3919 if (eeprom->use_eerd == TRUE) {
3920 ret_val = e1000_read_eeprom_eerd(hw, offset, words, data);
3921 if ((e1000_is_onboard_nvm_eeprom(hw) == TRUE) ||
3922 (hw->mac_type != e1000_82573))
3923 e1000_release_eeprom(hw);
3927 if(eeprom->type == e1000_eeprom_spi) {
3929 uint8_t read_opcode = EEPROM_READ_OPCODE_SPI;
3931 if(e1000_spi_eeprom_ready(hw)) {
3932 e1000_release_eeprom(hw);
3933 return -E1000_ERR_EEPROM;
3936 e1000_standby_eeprom(hw);
3938 /* Some SPI eeproms use the 8th address bit embedded in the opcode */
3939 if((eeprom->address_bits == 8) && (offset >= 128))
3940 read_opcode |= EEPROM_A8_OPCODE_SPI;
3942 /* Send the READ command (opcode + addr) */
3943 e1000_shift_out_ee_bits(hw, read_opcode, eeprom->opcode_bits);
3944 e1000_shift_out_ee_bits(hw, (uint16_t)(offset*2), eeprom->address_bits);
3946 /* Read the data. The address of the eeprom internally increments with
3947 * each byte (spi) being read, saving on the overhead of eeprom setup
3948 * and tear-down. The address counter will roll over if reading beyond
3949 * the size of the eeprom, thus allowing the entire memory to be read
3950 * starting from any offset. */
3951 for (i = 0; i < words; i++) {
3952 word_in = e1000_shift_in_ee_bits(hw, 16);
3953 data[i] = (word_in >> 8) | (word_in << 8);
3955 } else if(eeprom->type == e1000_eeprom_microwire) {
3956 for (i = 0; i < words; i++) {
3957 /* Send the READ command (opcode + addr) */
3958 e1000_shift_out_ee_bits(hw, EEPROM_READ_OPCODE_MICROWIRE,
3959 eeprom->opcode_bits);
3960 e1000_shift_out_ee_bits(hw, (uint16_t)(offset + i),
3961 eeprom->address_bits);
3963 /* Read the data. For microwire, each word requires the overhead
3964 * of eeprom setup and tear-down. */
3965 data[i] = e1000_shift_in_ee_bits(hw, 16);
3966 e1000_standby_eeprom(hw);
3970 /* End this read operation */
3971 e1000_release_eeprom(hw);
3973 return E1000_SUCCESS;
3976 /******************************************************************************
3977 * Reads a 16 bit word from the EEPROM using the EERD register.
3979 * hw - Struct containing variables accessed by shared code
3980 * offset - offset of word in the EEPROM to read
3981 * data - word read from the EEPROM
3982 * words - number of words to read
3983 *****************************************************************************/
3985 e1000_read_eeprom_eerd(struct e1000_hw *hw,
3990 uint32_t i, eerd = 0;
3993 for (i = 0; i < words; i++) {
3994 eerd = ((offset+i) << E1000_EEPROM_RW_ADDR_SHIFT) +
3995 E1000_EEPROM_RW_REG_START;
3997 E1000_WRITE_REG(hw, EERD, eerd);
3998 error = e1000_poll_eerd_eewr_done(hw, E1000_EEPROM_POLL_READ);
4003 data[i] = (E1000_READ_REG(hw, EERD) >> E1000_EEPROM_RW_REG_DATA);
4010 /******************************************************************************
4011 * Writes a 16 bit word from the EEPROM using the EEWR register.
4013 * hw - Struct containing variables accessed by shared code
4014 * offset - offset of word in the EEPROM to read
4015 * data - word read from the EEPROM
4016 * words - number of words to read
4017 *****************************************************************************/
4019 e1000_write_eeprom_eewr(struct e1000_hw *hw,
4024 uint32_t register_value = 0;
4028 for (i = 0; i < words; i++) {
4029 register_value = (data[i] << E1000_EEPROM_RW_REG_DATA) |
4030 ((offset+i) << E1000_EEPROM_RW_ADDR_SHIFT) |
4031 E1000_EEPROM_RW_REG_START;
4033 error = e1000_poll_eerd_eewr_done(hw, E1000_EEPROM_POLL_WRITE);
4038 E1000_WRITE_REG(hw, EEWR, register_value);
4040 error = e1000_poll_eerd_eewr_done(hw, E1000_EEPROM_POLL_WRITE);
4050 /******************************************************************************
4051 * Polls the status bit (bit 1) of the EERD to determine when the read is done.
4053 * hw - Struct containing variables accessed by shared code
4054 *****************************************************************************/
4056 e1000_poll_eerd_eewr_done(struct e1000_hw *hw, int eerd)
4058 uint32_t attempts = 100000;
4059 uint32_t i, reg = 0;
4060 int32_t done = E1000_ERR_EEPROM;
4062 for(i = 0; i < attempts; i++) {
4063 if(eerd == E1000_EEPROM_POLL_READ)
4064 reg = E1000_READ_REG(hw, EERD);
4066 reg = E1000_READ_REG(hw, EEWR);
4068 if(reg & E1000_EEPROM_RW_REG_DONE) {
4069 done = E1000_SUCCESS;
4078 /***************************************************************************
4079 * Description: Determines if the onboard NVM is FLASH or EEPROM.
4081 * hw - Struct containing variables accessed by shared code
4082 ****************************************************************************/
4084 e1000_is_onboard_nvm_eeprom(struct e1000_hw *hw)
4088 if(hw->mac_type == e1000_82573) {
4089 eecd = E1000_READ_REG(hw, EECD);
4091 /* Isolate bits 15 & 16 */
4092 eecd = ((eecd >> 15) & 0x03);
4094 /* If both bits are set, device is Flash type */
4102 /******************************************************************************
4103 * Verifies that the EEPROM has a valid checksum
4105 * hw - Struct containing variables accessed by shared code
4107 * Reads the first 64 16 bit words of the EEPROM and sums the values read.
4108 * If the the sum of the 64 16 bit words is 0xBABA, the EEPROM's checksum is
4110 *****************************************************************************/
4112 e1000_validate_eeprom_checksum(struct e1000_hw *hw)
4114 uint16_t checksum = 0;
4115 uint16_t i, eeprom_data;
4117 DEBUGFUNC("e1000_validate_eeprom_checksum");
4119 if ((hw->mac_type == e1000_82573) &&
4120 (e1000_is_onboard_nvm_eeprom(hw) == FALSE)) {
4121 /* Check bit 4 of word 10h. If it is 0, firmware is done updating
4122 * 10h-12h. Checksum may need to be fixed. */
4123 e1000_read_eeprom(hw, 0x10, 1, &eeprom_data);
4124 if ((eeprom_data & 0x10) == 0) {
4125 /* Read 0x23 and check bit 15. This bit is a 1 when the checksum
4126 * has already been fixed. If the checksum is still wrong and this
4127 * bit is a 1, we need to return bad checksum. Otherwise, we need
4128 * to set this bit to a 1 and update the checksum. */
4129 e1000_read_eeprom(hw, 0x23, 1, &eeprom_data);
4130 if ((eeprom_data & 0x8000) == 0) {
4131 eeprom_data |= 0x8000;
4132 e1000_write_eeprom(hw, 0x23, 1, &eeprom_data);
4133 e1000_update_eeprom_checksum(hw);
4138 for(i = 0; i < (EEPROM_CHECKSUM_REG + 1); i++) {
4139 if(e1000_read_eeprom(hw, i, 1, &eeprom_data) < 0) {
4140 DEBUGOUT("EEPROM Read Error\n");
4141 return -E1000_ERR_EEPROM;
4143 checksum += eeprom_data;
4146 if(checksum == (uint16_t) EEPROM_SUM)
4147 return E1000_SUCCESS;
4149 DEBUGOUT("EEPROM Checksum Invalid\n");
4150 return -E1000_ERR_EEPROM;
4154 /******************************************************************************
4155 * Calculates the EEPROM checksum and writes it to the EEPROM
4157 * hw - Struct containing variables accessed by shared code
4159 * Sums the first 63 16 bit words of the EEPROM. Subtracts the sum from 0xBABA.
4160 * Writes the difference to word offset 63 of the EEPROM.
4161 *****************************************************************************/
4163 e1000_update_eeprom_checksum(struct e1000_hw *hw)
4165 uint16_t checksum = 0;
4166 uint16_t i, eeprom_data;
4168 DEBUGFUNC("e1000_update_eeprom_checksum");
4170 for(i = 0; i < EEPROM_CHECKSUM_REG; i++) {
4171 if(e1000_read_eeprom(hw, i, 1, &eeprom_data) < 0) {
4172 DEBUGOUT("EEPROM Read Error\n");
4173 return -E1000_ERR_EEPROM;
4175 checksum += eeprom_data;
4177 checksum = (uint16_t) EEPROM_SUM - checksum;
4178 if(e1000_write_eeprom(hw, EEPROM_CHECKSUM_REG, 1, &checksum) < 0) {
4179 DEBUGOUT("EEPROM Write Error\n");
4180 return -E1000_ERR_EEPROM;
4181 } else if (hw->eeprom.type == e1000_eeprom_flash) {
4182 e1000_commit_shadow_ram(hw);
4184 return E1000_SUCCESS;
4187 /******************************************************************************
4188 * Parent function for writing words to the different EEPROM types.
4190 * hw - Struct containing variables accessed by shared code
4191 * offset - offset within the EEPROM to be written to
4192 * words - number of words to write
4193 * data - 16 bit word to be written to the EEPROM
4195 * If e1000_update_eeprom_checksum is not called after this function, the
4196 * EEPROM will most likely contain an invalid checksum.
4197 *****************************************************************************/
4199 e1000_write_eeprom(struct e1000_hw *hw,
4204 struct e1000_eeprom_info *eeprom = &hw->eeprom;
4207 DEBUGFUNC("e1000_write_eeprom");
4209 /* A check for invalid values: offset too large, too many words, and not
4212 if((offset >= eeprom->word_size) || (words > eeprom->word_size - offset) ||
4214 DEBUGOUT("\"words\" parameter out of bounds\n");
4215 return -E1000_ERR_EEPROM;
4218 /* 82573 writes only through eewr */
4219 if(eeprom->use_eewr == TRUE)
4220 return e1000_write_eeprom_eewr(hw, offset, words, data);
4222 /* Prepare the EEPROM for writing */
4223 if (e1000_acquire_eeprom(hw) != E1000_SUCCESS)
4224 return -E1000_ERR_EEPROM;
4226 if(eeprom->type == e1000_eeprom_microwire) {
4227 status = e1000_write_eeprom_microwire(hw, offset, words, data);
4229 status = e1000_write_eeprom_spi(hw, offset, words, data);
4233 /* Done with writing */
4234 e1000_release_eeprom(hw);
4239 /******************************************************************************
4240 * Writes a 16 bit word to a given offset in an SPI EEPROM.
4242 * hw - Struct containing variables accessed by shared code
4243 * offset - offset within the EEPROM to be written to
4244 * words - number of words to write
4245 * data - pointer to array of 8 bit words to be written to the EEPROM
4247 *****************************************************************************/
4249 e1000_write_eeprom_spi(struct e1000_hw *hw,
4254 struct e1000_eeprom_info *eeprom = &hw->eeprom;
4257 DEBUGFUNC("e1000_write_eeprom_spi");
4259 while (widx < words) {
4260 uint8_t write_opcode = EEPROM_WRITE_OPCODE_SPI;
4262 if(e1000_spi_eeprom_ready(hw)) return -E1000_ERR_EEPROM;
4264 e1000_standby_eeprom(hw);
4266 /* Send the WRITE ENABLE command (8 bit opcode ) */
4267 e1000_shift_out_ee_bits(hw, EEPROM_WREN_OPCODE_SPI,
4268 eeprom->opcode_bits);
4270 e1000_standby_eeprom(hw);
4272 /* Some SPI eeproms use the 8th address bit embedded in the opcode */
4273 if((eeprom->address_bits == 8) && (offset >= 128))
4274 write_opcode |= EEPROM_A8_OPCODE_SPI;
4276 /* Send the Write command (8-bit opcode + addr) */
4277 e1000_shift_out_ee_bits(hw, write_opcode, eeprom->opcode_bits);
4279 e1000_shift_out_ee_bits(hw, (uint16_t)((offset + widx)*2),
4280 eeprom->address_bits);
4284 /* Loop to allow for up to whole page write (32 bytes) of eeprom */
4285 while (widx < words) {
4286 uint16_t word_out = data[widx];
4287 word_out = (word_out >> 8) | (word_out << 8);
4288 e1000_shift_out_ee_bits(hw, word_out, 16);
4291 /* Some larger eeprom sizes are capable of a 32-byte PAGE WRITE
4292 * operation, while the smaller eeproms are capable of an 8-byte
4293 * PAGE WRITE operation. Break the inner loop to pass new address
4295 if((((offset + widx)*2) % eeprom->page_size) == 0) {
4296 e1000_standby_eeprom(hw);
4302 return E1000_SUCCESS;
4305 /******************************************************************************
4306 * Writes a 16 bit word to a given offset in a Microwire EEPROM.
4308 * hw - Struct containing variables accessed by shared code
4309 * offset - offset within the EEPROM to be written to
4310 * words - number of words to write
4311 * data - pointer to array of 16 bit words to be written to the EEPROM
4313 *****************************************************************************/
4315 e1000_write_eeprom_microwire(struct e1000_hw *hw,
4320 struct e1000_eeprom_info *eeprom = &hw->eeprom;
4322 uint16_t words_written = 0;
4325 DEBUGFUNC("e1000_write_eeprom_microwire");
4327 /* Send the write enable command to the EEPROM (3-bit opcode plus
4328 * 6/8-bit dummy address beginning with 11). It's less work to include
4329 * the 11 of the dummy address as part of the opcode than it is to shift
4330 * it over the correct number of bits for the address. This puts the
4331 * EEPROM into write/erase mode.
4333 e1000_shift_out_ee_bits(hw, EEPROM_EWEN_OPCODE_MICROWIRE,
4334 (uint16_t)(eeprom->opcode_bits + 2));
4336 e1000_shift_out_ee_bits(hw, 0, (uint16_t)(eeprom->address_bits - 2));
4338 /* Prepare the EEPROM */
4339 e1000_standby_eeprom(hw);
4341 while (words_written < words) {
4342 /* Send the Write command (3-bit opcode + addr) */
4343 e1000_shift_out_ee_bits(hw, EEPROM_WRITE_OPCODE_MICROWIRE,
4344 eeprom->opcode_bits);
4346 e1000_shift_out_ee_bits(hw, (uint16_t)(offset + words_written),
4347 eeprom->address_bits);
4350 e1000_shift_out_ee_bits(hw, data[words_written], 16);
4352 /* Toggle the CS line. This in effect tells the EEPROM to execute
4353 * the previous command.
4355 e1000_standby_eeprom(hw);
4357 /* Read DO repeatedly until it is high (equal to '1'). The EEPROM will
4358 * signal that the command has been completed by raising the DO signal.
4359 * If DO does not go high in 10 milliseconds, then error out.
4361 for(i = 0; i < 200; i++) {
4362 eecd = E1000_READ_REG(hw, EECD);
4363 if(eecd & E1000_EECD_DO) break;
4367 DEBUGOUT("EEPROM Write did not complete\n");
4368 return -E1000_ERR_EEPROM;
4371 /* Recover from write */
4372 e1000_standby_eeprom(hw);
4377 /* Send the write disable command to the EEPROM (3-bit opcode plus
4378 * 6/8-bit dummy address beginning with 10). It's less work to include
4379 * the 10 of the dummy address as part of the opcode than it is to shift
4380 * it over the correct number of bits for the address. This takes the
4381 * EEPROM out of write/erase mode.
4383 e1000_shift_out_ee_bits(hw, EEPROM_EWDS_OPCODE_MICROWIRE,
4384 (uint16_t)(eeprom->opcode_bits + 2));
4386 e1000_shift_out_ee_bits(hw, 0, (uint16_t)(eeprom->address_bits - 2));
4388 return E1000_SUCCESS;
4391 /******************************************************************************
4392 * Flushes the cached eeprom to NVM. This is done by saving the modified values
4393 * in the eeprom cache and the non modified values in the currently active bank
4396 * hw - Struct containing variables accessed by shared code
4397 * offset - offset of word in the EEPROM to read
4398 * data - word read from the EEPROM
4399 * words - number of words to read
4400 *****************************************************************************/
4402 e1000_commit_shadow_ram(struct e1000_hw *hw)
4404 uint32_t attempts = 100000;
4408 int32_t error = E1000_SUCCESS;
4410 /* The flop register will be used to determine if flash type is STM */
4411 flop = E1000_READ_REG(hw, FLOP);
4413 if (hw->mac_type == e1000_82573) {
4414 for (i=0; i < attempts; i++) {
4415 eecd = E1000_READ_REG(hw, EECD);
4416 if ((eecd & E1000_EECD_FLUPD) == 0) {
4422 if (i == attempts) {
4423 return -E1000_ERR_EEPROM;
4426 /* If STM opcode located in bits 15:8 of flop, reset firmware */
4427 if ((flop & 0xFF00) == E1000_STM_OPCODE) {
4428 E1000_WRITE_REG(hw, HICR, E1000_HICR_FW_RESET);
4431 /* Perform the flash update */
4432 E1000_WRITE_REG(hw, EECD, eecd | E1000_EECD_FLUPD);
4434 for (i=0; i < attempts; i++) {
4435 eecd = E1000_READ_REG(hw, EECD);
4436 if ((eecd & E1000_EECD_FLUPD) == 0) {
4442 if (i == attempts) {
4443 return -E1000_ERR_EEPROM;
4450 /******************************************************************************
4451 * Reads the adapter's part number from the EEPROM
4453 * hw - Struct containing variables accessed by shared code
4454 * part_num - Adapter's part number
4455 *****************************************************************************/
4457 e1000_read_part_num(struct e1000_hw *hw,
4460 uint16_t offset = EEPROM_PBA_BYTE_1;
4461 uint16_t eeprom_data;
4463 DEBUGFUNC("e1000_read_part_num");
4465 /* Get word 0 from EEPROM */
4466 if(e1000_read_eeprom(hw, offset, 1, &eeprom_data) < 0) {
4467 DEBUGOUT("EEPROM Read Error\n");
4468 return -E1000_ERR_EEPROM;
4470 /* Save word 0 in upper half of part_num */
4471 *part_num = (uint32_t) (eeprom_data << 16);
4473 /* Get word 1 from EEPROM */
4474 if(e1000_read_eeprom(hw, ++offset, 1, &eeprom_data) < 0) {
4475 DEBUGOUT("EEPROM Read Error\n");
4476 return -E1000_ERR_EEPROM;
4478 /* Save word 1 in lower half of part_num */
4479 *part_num |= eeprom_data;
4481 return E1000_SUCCESS;
4484 /******************************************************************************
4485 * Reads the adapter's MAC address from the EEPROM and inverts the LSB for the
4486 * second function of dual function devices
4488 * hw - Struct containing variables accessed by shared code
4489 *****************************************************************************/
4491 e1000_read_mac_addr(struct e1000_hw * hw)
4494 uint16_t eeprom_data, i;
4496 DEBUGFUNC("e1000_read_mac_addr");
4498 for(i = 0; i < NODE_ADDRESS_SIZE; i += 2) {
4500 if(e1000_read_eeprom(hw, offset, 1, &eeprom_data) < 0) {
4501 DEBUGOUT("EEPROM Read Error\n");
4502 return -E1000_ERR_EEPROM;
4504 hw->perm_mac_addr[i] = (uint8_t) (eeprom_data & 0x00FF);
4505 hw->perm_mac_addr[i+1] = (uint8_t) (eeprom_data >> 8);
4508 switch (hw->mac_type) {
4512 case e1000_82546_rev_3:
4514 if(E1000_READ_REG(hw, STATUS) & E1000_STATUS_FUNC_1)
4515 hw->perm_mac_addr[5] ^= 0x01;
4519 for(i = 0; i < NODE_ADDRESS_SIZE; i++)
4520 hw->mac_addr[i] = hw->perm_mac_addr[i];
4521 return E1000_SUCCESS;
4524 /******************************************************************************
4525 * Initializes receive address filters.
4527 * hw - Struct containing variables accessed by shared code
4529 * Places the MAC address in receive address register 0 and clears the rest
4530 * of the receive addresss registers. Clears the multicast table. Assumes
4531 * the receiver is in reset when the routine is called.
4532 *****************************************************************************/
4534 e1000_init_rx_addrs(struct e1000_hw *hw)
4539 DEBUGFUNC("e1000_init_rx_addrs");
4541 /* Setup the receive address. */
4542 DEBUGOUT("Programming MAC Address into RAR[0]\n");
4544 e1000_rar_set(hw, hw->mac_addr, 0);
4546 rar_num = E1000_RAR_ENTRIES;
4548 /* Reserve a spot for the Locally Administered Address to work around
4549 * an 82571 issue in which a reset on one port will reload the MAC on
4550 * the other port. */
4551 if ((hw->mac_type == e1000_82571) && (hw->laa_is_present == TRUE))
4553 /* Zero out the other 15 receive addresses. */
4554 DEBUGOUT("Clearing RAR[1-15]\n");
4555 for(i = 1; i < rar_num; i++) {
4556 E1000_WRITE_REG_ARRAY(hw, RA, (i << 1), 0);
4557 E1000_WRITE_REG_ARRAY(hw, RA, ((i << 1) + 1), 0);
4562 /******************************************************************************
4563 * Updates the MAC's list of multicast addresses.
4565 * hw - Struct containing variables accessed by shared code
4566 * mc_addr_list - the list of new multicast addresses
4567 * mc_addr_count - number of addresses
4568 * pad - number of bytes between addresses in the list
4569 * rar_used_count - offset where to start adding mc addresses into the RAR's
4571 * The given list replaces any existing list. Clears the last 15 receive
4572 * address registers and the multicast table. Uses receive address registers
4573 * for the first 15 multicast addresses, and hashes the rest into the
4575 *****************************************************************************/
4577 e1000_mc_addr_list_update(struct e1000_hw *hw,
4578 uint8_t *mc_addr_list,
4579 uint32_t mc_addr_count,
4581 uint32_t rar_used_count)
4583 uint32_t hash_value;
4585 uint32_t num_rar_entry;
4586 uint32_t num_mta_entry;
4588 DEBUGFUNC("e1000_mc_addr_list_update");
4590 /* Set the new number of MC addresses that we are being requested to use. */
4591 hw->num_mc_addrs = mc_addr_count;
4593 /* Clear RAR[1-15] */
4594 DEBUGOUT(" Clearing RAR[1-15]\n");
4595 num_rar_entry = E1000_RAR_ENTRIES;
4596 /* Reserve a spot for the Locally Administered Address to work around
4597 * an 82571 issue in which a reset on one port will reload the MAC on
4598 * the other port. */
4599 if ((hw->mac_type == e1000_82571) && (hw->laa_is_present == TRUE))
4602 for(i = rar_used_count; i < num_rar_entry; i++) {
4603 E1000_WRITE_REG_ARRAY(hw, RA, (i << 1), 0);
4604 E1000_WRITE_REG_ARRAY(hw, RA, ((i << 1) + 1), 0);
4608 DEBUGOUT(" Clearing MTA\n");
4609 num_mta_entry = E1000_NUM_MTA_REGISTERS;
4610 for(i = 0; i < num_mta_entry; i++) {
4611 E1000_WRITE_REG_ARRAY(hw, MTA, i, 0);
4614 /* Add the new addresses */
4615 for(i = 0; i < mc_addr_count; i++) {
4616 DEBUGOUT(" Adding the multicast addresses:\n");
4617 DEBUGOUT7(" MC Addr #%d =%.2X %.2X %.2X %.2X %.2X %.2X\n", i,
4618 mc_addr_list[i * (ETH_LENGTH_OF_ADDRESS + pad)],
4619 mc_addr_list[i * (ETH_LENGTH_OF_ADDRESS + pad) + 1],
4620 mc_addr_list[i * (ETH_LENGTH_OF_ADDRESS + pad) + 2],
4621 mc_addr_list[i * (ETH_LENGTH_OF_ADDRESS + pad) + 3],
4622 mc_addr_list[i * (ETH_LENGTH_OF_ADDRESS + pad) + 4],
4623 mc_addr_list[i * (ETH_LENGTH_OF_ADDRESS + pad) + 5]);
4625 hash_value = e1000_hash_mc_addr(hw,
4627 (i * (ETH_LENGTH_OF_ADDRESS + pad)));
4629 DEBUGOUT1(" Hash value = 0x%03X\n", hash_value);
4631 /* Place this multicast address in the RAR if there is room, *
4632 * else put it in the MTA
4634 if (rar_used_count < num_rar_entry) {
4636 mc_addr_list + (i * (ETH_LENGTH_OF_ADDRESS + pad)),
4640 e1000_mta_set(hw, hash_value);
4643 DEBUGOUT("MC Update Complete\n");
4647 /******************************************************************************
4648 * Hashes an address to determine its location in the multicast table
4650 * hw - Struct containing variables accessed by shared code
4651 * mc_addr - the multicast address to hash
4652 *****************************************************************************/
4654 e1000_hash_mc_addr(struct e1000_hw *hw,
4657 uint32_t hash_value = 0;
4659 /* The portion of the address that is used for the hash table is
4660 * determined by the mc_filter_type setting.
4662 switch (hw->mc_filter_type) {
4663 /* [0] [1] [2] [3] [4] [5]
4668 /* [47:36] i.e. 0x563 for above example address */
4669 hash_value = ((mc_addr[4] >> 4) | (((uint16_t) mc_addr[5]) << 4));
4672 /* [46:35] i.e. 0xAC6 for above example address */
4673 hash_value = ((mc_addr[4] >> 3) | (((uint16_t) mc_addr[5]) << 5));
4676 /* [45:34] i.e. 0x5D8 for above example address */
4677 hash_value = ((mc_addr[4] >> 2) | (((uint16_t) mc_addr[5]) << 6));
4680 /* [43:32] i.e. 0x634 for above example address */
4681 hash_value = ((mc_addr[4]) | (((uint16_t) mc_addr[5]) << 8));
4685 hash_value &= 0xFFF;
4690 /******************************************************************************
4691 * Sets the bit in the multicast table corresponding to the hash value.
4693 * hw - Struct containing variables accessed by shared code
4694 * hash_value - Multicast address hash value
4695 *****************************************************************************/
4697 e1000_mta_set(struct e1000_hw *hw,
4698 uint32_t hash_value)
4700 uint32_t hash_bit, hash_reg;
4704 /* The MTA is a register array of 128 32-bit registers.
4705 * It is treated like an array of 4096 bits. We want to set
4706 * bit BitArray[hash_value]. So we figure out what register
4707 * the bit is in, read it, OR in the new bit, then write
4708 * back the new value. The register is determined by the
4709 * upper 7 bits of the hash value and the bit within that
4710 * register are determined by the lower 5 bits of the value.
4712 hash_reg = (hash_value >> 5) & 0x7F;
4713 hash_bit = hash_value & 0x1F;
4715 mta = E1000_READ_REG_ARRAY(hw, MTA, hash_reg);
4717 mta |= (1 << hash_bit);
4719 /* If we are on an 82544 and we are trying to write an odd offset
4720 * in the MTA, save off the previous entry before writing and
4721 * restore the old value after writing.
4723 if((hw->mac_type == e1000_82544) && ((hash_reg & 0x1) == 1)) {
4724 temp = E1000_READ_REG_ARRAY(hw, MTA, (hash_reg - 1));
4725 E1000_WRITE_REG_ARRAY(hw, MTA, hash_reg, mta);
4726 E1000_WRITE_REG_ARRAY(hw, MTA, (hash_reg - 1), temp);
4728 E1000_WRITE_REG_ARRAY(hw, MTA, hash_reg, mta);
4732 /******************************************************************************
4733 * Puts an ethernet address into a receive address register.
4735 * hw - Struct containing variables accessed by shared code
4736 * addr - Address to put into receive address register
4737 * index - Receive address register to write
4738 *****************************************************************************/
4740 e1000_rar_set(struct e1000_hw *hw,
4744 uint32_t rar_low, rar_high;
4746 /* HW expects these in little endian so we reverse the byte order
4747 * from network order (big endian) to little endian
4749 rar_low = ((uint32_t) addr[0] |
4750 ((uint32_t) addr[1] << 8) |
4751 ((uint32_t) addr[2] << 16) | ((uint32_t) addr[3] << 24));
4753 rar_high = ((uint32_t) addr[4] | ((uint32_t) addr[5] << 8) | E1000_RAH_AV);
4755 E1000_WRITE_REG_ARRAY(hw, RA, (index << 1), rar_low);
4756 E1000_WRITE_REG_ARRAY(hw, RA, ((index << 1) + 1), rar_high);
4759 /******************************************************************************
4760 * Writes a value to the specified offset in the VLAN filter table.
4762 * hw - Struct containing variables accessed by shared code
4763 * offset - Offset in VLAN filer table to write
4764 * value - Value to write into VLAN filter table
4765 *****************************************************************************/
4767 e1000_write_vfta(struct e1000_hw *hw,
4773 if((hw->mac_type == e1000_82544) && ((offset & 0x1) == 1)) {
4774 temp = E1000_READ_REG_ARRAY(hw, VFTA, (offset - 1));
4775 E1000_WRITE_REG_ARRAY(hw, VFTA, offset, value);
4776 E1000_WRITE_REG_ARRAY(hw, VFTA, (offset - 1), temp);
4778 E1000_WRITE_REG_ARRAY(hw, VFTA, offset, value);
4782 /******************************************************************************
4783 * Clears the VLAN filer table
4785 * hw - Struct containing variables accessed by shared code
4786 *****************************************************************************/
4788 e1000_clear_vfta(struct e1000_hw *hw)
4791 uint32_t vfta_value = 0;
4792 uint32_t vfta_offset = 0;
4793 uint32_t vfta_bit_in_reg = 0;
4795 if (hw->mac_type == e1000_82573) {
4796 if (hw->mng_cookie.vlan_id != 0) {
4797 /* The VFTA is a 4096b bit-field, each identifying a single VLAN
4798 * ID. The following operations determine which 32b entry
4799 * (i.e. offset) into the array we want to set the VLAN ID
4800 * (i.e. bit) of the manageability unit. */
4801 vfta_offset = (hw->mng_cookie.vlan_id >>
4802 E1000_VFTA_ENTRY_SHIFT) &
4803 E1000_VFTA_ENTRY_MASK;
4804 vfta_bit_in_reg = 1 << (hw->mng_cookie.vlan_id &
4805 E1000_VFTA_ENTRY_BIT_SHIFT_MASK);
4808 for (offset = 0; offset < E1000_VLAN_FILTER_TBL_SIZE; offset++) {
4809 /* If the offset we want to clear is the same offset of the
4810 * manageability VLAN ID, then clear all bits except that of the
4811 * manageability unit */
4812 vfta_value = (offset == vfta_offset) ? vfta_bit_in_reg : 0;
4813 E1000_WRITE_REG_ARRAY(hw, VFTA, offset, vfta_value);
4818 e1000_id_led_init(struct e1000_hw * hw)
4821 const uint32_t ledctl_mask = 0x000000FF;
4822 const uint32_t ledctl_on = E1000_LEDCTL_MODE_LED_ON;
4823 const uint32_t ledctl_off = E1000_LEDCTL_MODE_LED_OFF;
4824 uint16_t eeprom_data, i, temp;
4825 const uint16_t led_mask = 0x0F;
4827 DEBUGFUNC("e1000_id_led_init");
4829 if(hw->mac_type < e1000_82540) {
4831 return E1000_SUCCESS;
4834 ledctl = E1000_READ_REG(hw, LEDCTL);
4835 hw->ledctl_default = ledctl;
4836 hw->ledctl_mode1 = hw->ledctl_default;
4837 hw->ledctl_mode2 = hw->ledctl_default;
4839 if(e1000_read_eeprom(hw, EEPROM_ID_LED_SETTINGS, 1, &eeprom_data) < 0) {
4840 DEBUGOUT("EEPROM Read Error\n");
4841 return -E1000_ERR_EEPROM;
4843 if((eeprom_data== ID_LED_RESERVED_0000) ||
4844 (eeprom_data == ID_LED_RESERVED_FFFF)) eeprom_data = ID_LED_DEFAULT;
4845 for(i = 0; i < 4; i++) {
4846 temp = (eeprom_data >> (i << 2)) & led_mask;
4848 case ID_LED_ON1_DEF2:
4849 case ID_LED_ON1_ON2:
4850 case ID_LED_ON1_OFF2:
4851 hw->ledctl_mode1 &= ~(ledctl_mask << (i << 3));
4852 hw->ledctl_mode1 |= ledctl_on << (i << 3);
4854 case ID_LED_OFF1_DEF2:
4855 case ID_LED_OFF1_ON2:
4856 case ID_LED_OFF1_OFF2:
4857 hw->ledctl_mode1 &= ~(ledctl_mask << (i << 3));
4858 hw->ledctl_mode1 |= ledctl_off << (i << 3);
4865 case ID_LED_DEF1_ON2:
4866 case ID_LED_ON1_ON2:
4867 case ID_LED_OFF1_ON2:
4868 hw->ledctl_mode2 &= ~(ledctl_mask << (i << 3));
4869 hw->ledctl_mode2 |= ledctl_on << (i << 3);
4871 case ID_LED_DEF1_OFF2:
4872 case ID_LED_ON1_OFF2:
4873 case ID_LED_OFF1_OFF2:
4874 hw->ledctl_mode2 &= ~(ledctl_mask << (i << 3));
4875 hw->ledctl_mode2 |= ledctl_off << (i << 3);
4882 return E1000_SUCCESS;
4885 /******************************************************************************
4886 * Prepares SW controlable LED for use and saves the current state of the LED.
4888 * hw - Struct containing variables accessed by shared code
4889 *****************************************************************************/
4891 e1000_setup_led(struct e1000_hw *hw)
4894 int32_t ret_val = E1000_SUCCESS;
4896 DEBUGFUNC("e1000_setup_led");
4898 switch(hw->mac_type) {
4899 case e1000_82542_rev2_0:
4900 case e1000_82542_rev2_1:
4903 /* No setup necessary */
4907 case e1000_82541_rev_2:
4908 case e1000_82547_rev_2:
4909 /* Turn off PHY Smart Power Down (if enabled) */
4910 ret_val = e1000_read_phy_reg(hw, IGP01E1000_GMII_FIFO,
4911 &hw->phy_spd_default);
4914 ret_val = e1000_write_phy_reg(hw, IGP01E1000_GMII_FIFO,
4915 (uint16_t)(hw->phy_spd_default &
4916 ~IGP01E1000_GMII_SPD));
4921 if(hw->media_type == e1000_media_type_fiber) {
4922 ledctl = E1000_READ_REG(hw, LEDCTL);
4923 /* Save current LEDCTL settings */
4924 hw->ledctl_default = ledctl;
4926 ledctl &= ~(E1000_LEDCTL_LED0_IVRT |
4927 E1000_LEDCTL_LED0_BLINK |
4928 E1000_LEDCTL_LED0_MODE_MASK);
4929 ledctl |= (E1000_LEDCTL_MODE_LED_OFF <<
4930 E1000_LEDCTL_LED0_MODE_SHIFT);
4931 E1000_WRITE_REG(hw, LEDCTL, ledctl);
4932 } else if(hw->media_type == e1000_media_type_copper)
4933 E1000_WRITE_REG(hw, LEDCTL, hw->ledctl_mode1);
4937 return E1000_SUCCESS;
4940 /******************************************************************************
4941 * Restores the saved state of the SW controlable LED.
4943 * hw - Struct containing variables accessed by shared code
4944 *****************************************************************************/
4946 e1000_cleanup_led(struct e1000_hw *hw)
4948 int32_t ret_val = E1000_SUCCESS;
4950 DEBUGFUNC("e1000_cleanup_led");
4952 switch(hw->mac_type) {
4953 case e1000_82542_rev2_0:
4954 case e1000_82542_rev2_1:
4957 /* No cleanup necessary */
4961 case e1000_82541_rev_2:
4962 case e1000_82547_rev_2:
4963 /* Turn on PHY Smart Power Down (if previously enabled) */
4964 ret_val = e1000_write_phy_reg(hw, IGP01E1000_GMII_FIFO,
4965 hw->phy_spd_default);
4970 /* Restore LEDCTL settings */
4971 E1000_WRITE_REG(hw, LEDCTL, hw->ledctl_default);
4975 return E1000_SUCCESS;
4978 /******************************************************************************
4979 * Turns on the software controllable LED
4981 * hw - Struct containing variables accessed by shared code
4982 *****************************************************************************/
4984 e1000_led_on(struct e1000_hw *hw)
4986 uint32_t ctrl = E1000_READ_REG(hw, CTRL);
4988 DEBUGFUNC("e1000_led_on");
4990 switch(hw->mac_type) {
4991 case e1000_82542_rev2_0:
4992 case e1000_82542_rev2_1:
4994 /* Set SW Defineable Pin 0 to turn on the LED */
4995 ctrl |= E1000_CTRL_SWDPIN0;
4996 ctrl |= E1000_CTRL_SWDPIO0;
4999 if(hw->media_type == e1000_media_type_fiber) {
5000 /* Set SW Defineable Pin 0 to turn on the LED */
5001 ctrl |= E1000_CTRL_SWDPIN0;
5002 ctrl |= E1000_CTRL_SWDPIO0;
5004 /* Clear SW Defineable Pin 0 to turn on the LED */
5005 ctrl &= ~E1000_CTRL_SWDPIN0;
5006 ctrl |= E1000_CTRL_SWDPIO0;
5010 if(hw->media_type == e1000_media_type_fiber) {
5011 /* Clear SW Defineable Pin 0 to turn on the LED */
5012 ctrl &= ~E1000_CTRL_SWDPIN0;
5013 ctrl |= E1000_CTRL_SWDPIO0;
5014 } else if(hw->media_type == e1000_media_type_copper) {
5015 E1000_WRITE_REG(hw, LEDCTL, hw->ledctl_mode2);
5016 return E1000_SUCCESS;
5021 E1000_WRITE_REG(hw, CTRL, ctrl);
5023 return E1000_SUCCESS;
5026 /******************************************************************************
5027 * Turns off the software controllable LED
5029 * hw - Struct containing variables accessed by shared code
5030 *****************************************************************************/
5032 e1000_led_off(struct e1000_hw *hw)
5034 uint32_t ctrl = E1000_READ_REG(hw, CTRL);
5036 DEBUGFUNC("e1000_led_off");
5038 switch(hw->mac_type) {
5039 case e1000_82542_rev2_0:
5040 case e1000_82542_rev2_1:
5042 /* Clear SW Defineable Pin 0 to turn off the LED */
5043 ctrl &= ~E1000_CTRL_SWDPIN0;
5044 ctrl |= E1000_CTRL_SWDPIO0;
5047 if(hw->media_type == e1000_media_type_fiber) {
5048 /* Clear SW Defineable Pin 0 to turn off the LED */
5049 ctrl &= ~E1000_CTRL_SWDPIN0;
5050 ctrl |= E1000_CTRL_SWDPIO0;
5052 /* Set SW Defineable Pin 0 to turn off the LED */
5053 ctrl |= E1000_CTRL_SWDPIN0;
5054 ctrl |= E1000_CTRL_SWDPIO0;
5058 if(hw->media_type == e1000_media_type_fiber) {
5059 /* Set SW Defineable Pin 0 to turn off the LED */
5060 ctrl |= E1000_CTRL_SWDPIN0;
5061 ctrl |= E1000_CTRL_SWDPIO0;
5062 } else if(hw->media_type == e1000_media_type_copper) {
5063 E1000_WRITE_REG(hw, LEDCTL, hw->ledctl_mode1);
5064 return E1000_SUCCESS;
5069 E1000_WRITE_REG(hw, CTRL, ctrl);
5071 return E1000_SUCCESS;
5074 /******************************************************************************
5075 * Clears all hardware statistics counters.
5077 * hw - Struct containing variables accessed by shared code
5078 *****************************************************************************/
5080 e1000_clear_hw_cntrs(struct e1000_hw *hw)
5082 volatile uint32_t temp;
5084 temp = E1000_READ_REG(hw, CRCERRS);
5085 temp = E1000_READ_REG(hw, SYMERRS);
5086 temp = E1000_READ_REG(hw, MPC);
5087 temp = E1000_READ_REG(hw, SCC);
5088 temp = E1000_READ_REG(hw, ECOL);
5089 temp = E1000_READ_REG(hw, MCC);
5090 temp = E1000_READ_REG(hw, LATECOL);
5091 temp = E1000_READ_REG(hw, COLC);
5092 temp = E1000_READ_REG(hw, DC);
5093 temp = E1000_READ_REG(hw, SEC);
5094 temp = E1000_READ_REG(hw, RLEC);
5095 temp = E1000_READ_REG(hw, XONRXC);
5096 temp = E1000_READ_REG(hw, XONTXC);
5097 temp = E1000_READ_REG(hw, XOFFRXC);
5098 temp = E1000_READ_REG(hw, XOFFTXC);
5099 temp = E1000_READ_REG(hw, FCRUC);
5100 temp = E1000_READ_REG(hw, PRC64);
5101 temp = E1000_READ_REG(hw, PRC127);
5102 temp = E1000_READ_REG(hw, PRC255);
5103 temp = E1000_READ_REG(hw, PRC511);
5104 temp = E1000_READ_REG(hw, PRC1023);
5105 temp = E1000_READ_REG(hw, PRC1522);
5106 temp = E1000_READ_REG(hw, GPRC);
5107 temp = E1000_READ_REG(hw, BPRC);
5108 temp = E1000_READ_REG(hw, MPRC);
5109 temp = E1000_READ_REG(hw, GPTC);
5110 temp = E1000_READ_REG(hw, GORCL);
5111 temp = E1000_READ_REG(hw, GORCH);
5112 temp = E1000_READ_REG(hw, GOTCL);
5113 temp = E1000_READ_REG(hw, GOTCH);
5114 temp = E1000_READ_REG(hw, RNBC);
5115 temp = E1000_READ_REG(hw, RUC);
5116 temp = E1000_READ_REG(hw, RFC);
5117 temp = E1000_READ_REG(hw, ROC);
5118 temp = E1000_READ_REG(hw, RJC);
5119 temp = E1000_READ_REG(hw, TORL);
5120 temp = E1000_READ_REG(hw, TORH);
5121 temp = E1000_READ_REG(hw, TOTL);
5122 temp = E1000_READ_REG(hw, TOTH);
5123 temp = E1000_READ_REG(hw, TPR);
5124 temp = E1000_READ_REG(hw, TPT);
5125 temp = E1000_READ_REG(hw, PTC64);
5126 temp = E1000_READ_REG(hw, PTC127);
5127 temp = E1000_READ_REG(hw, PTC255);
5128 temp = E1000_READ_REG(hw, PTC511);
5129 temp = E1000_READ_REG(hw, PTC1023);
5130 temp = E1000_READ_REG(hw, PTC1522);
5131 temp = E1000_READ_REG(hw, MPTC);
5132 temp = E1000_READ_REG(hw, BPTC);
5134 if(hw->mac_type < e1000_82543) return;
5136 temp = E1000_READ_REG(hw, ALGNERRC);
5137 temp = E1000_READ_REG(hw, RXERRC);
5138 temp = E1000_READ_REG(hw, TNCRS);
5139 temp = E1000_READ_REG(hw, CEXTERR);
5140 temp = E1000_READ_REG(hw, TSCTC);
5141 temp = E1000_READ_REG(hw, TSCTFC);
5143 if(hw->mac_type <= e1000_82544) return;
5145 temp = E1000_READ_REG(hw, MGTPRC);
5146 temp = E1000_READ_REG(hw, MGTPDC);
5147 temp = E1000_READ_REG(hw, MGTPTC);
5149 if(hw->mac_type <= e1000_82547_rev_2) return;
5151 temp = E1000_READ_REG(hw, IAC);
5152 temp = E1000_READ_REG(hw, ICRXOC);
5153 temp = E1000_READ_REG(hw, ICRXPTC);
5154 temp = E1000_READ_REG(hw, ICRXATC);
5155 temp = E1000_READ_REG(hw, ICTXPTC);
5156 temp = E1000_READ_REG(hw, ICTXATC);
5157 temp = E1000_READ_REG(hw, ICTXQEC);
5158 temp = E1000_READ_REG(hw, ICTXQMTC);
5159 temp = E1000_READ_REG(hw, ICRXDMTC);
5162 /******************************************************************************
5163 * Resets Adaptive IFS to its default state.
5165 * hw - Struct containing variables accessed by shared code
5167 * Call this after e1000_init_hw. You may override the IFS defaults by setting
5168 * hw->ifs_params_forced to TRUE. However, you must initialize hw->
5169 * current_ifs_val, ifs_min_val, ifs_max_val, ifs_step_size, and ifs_ratio
5170 * before calling this function.
5171 *****************************************************************************/
5173 e1000_reset_adaptive(struct e1000_hw *hw)
5175 DEBUGFUNC("e1000_reset_adaptive");
5177 if(hw->adaptive_ifs) {
5178 if(!hw->ifs_params_forced) {
5179 hw->current_ifs_val = 0;
5180 hw->ifs_min_val = IFS_MIN;
5181 hw->ifs_max_val = IFS_MAX;
5182 hw->ifs_step_size = IFS_STEP;
5183 hw->ifs_ratio = IFS_RATIO;
5185 hw->in_ifs_mode = FALSE;
5186 E1000_WRITE_REG(hw, AIT, 0);
5188 DEBUGOUT("Not in Adaptive IFS mode!\n");
5192 /******************************************************************************
5193 * Called during the callback/watchdog routine to update IFS value based on
5194 * the ratio of transmits to collisions.
5196 * hw - Struct containing variables accessed by shared code
5197 * tx_packets - Number of transmits since last callback
5198 * total_collisions - Number of collisions since last callback
5199 *****************************************************************************/
5201 e1000_update_adaptive(struct e1000_hw *hw)
5203 DEBUGFUNC("e1000_update_adaptive");
5205 if(hw->adaptive_ifs) {
5206 if((hw->collision_delta * hw->ifs_ratio) > hw->tx_packet_delta) {
5207 if(hw->tx_packet_delta > MIN_NUM_XMITS) {
5208 hw->in_ifs_mode = TRUE;
5209 if(hw->current_ifs_val < hw->ifs_max_val) {
5210 if(hw->current_ifs_val == 0)
5211 hw->current_ifs_val = hw->ifs_min_val;
5213 hw->current_ifs_val += hw->ifs_step_size;
5214 E1000_WRITE_REG(hw, AIT, hw->current_ifs_val);
5218 if(hw->in_ifs_mode && (hw->tx_packet_delta <= MIN_NUM_XMITS)) {
5219 hw->current_ifs_val = 0;
5220 hw->in_ifs_mode = FALSE;
5221 E1000_WRITE_REG(hw, AIT, 0);
5225 DEBUGOUT("Not in Adaptive IFS mode!\n");
5229 /******************************************************************************
5230 * Adjusts the statistic counters when a frame is accepted by TBI_ACCEPT
5232 * hw - Struct containing variables accessed by shared code
5233 * frame_len - The length of the frame in question
5234 * mac_addr - The Ethernet destination address of the frame in question
5235 *****************************************************************************/
5237 e1000_tbi_adjust_stats(struct e1000_hw *hw,
5238 struct e1000_hw_stats *stats,
5244 /* First adjust the frame length. */
5246 /* We need to adjust the statistics counters, since the hardware
5247 * counters overcount this packet as a CRC error and undercount
5248 * the packet as a good packet
5250 /* This packet should not be counted as a CRC error. */
5252 /* This packet does count as a Good Packet Received. */
5255 /* Adjust the Good Octets received counters */
5256 carry_bit = 0x80000000 & stats->gorcl;
5257 stats->gorcl += frame_len;
5258 /* If the high bit of Gorcl (the low 32 bits of the Good Octets
5259 * Received Count) was one before the addition,
5260 * AND it is zero after, then we lost the carry out,
5261 * need to add one to Gorch (Good Octets Received Count High).
5262 * This could be simplified if all environments supported
5265 if(carry_bit && ((stats->gorcl & 0x80000000) == 0))
5267 /* Is this a broadcast or multicast? Check broadcast first,
5268 * since the test for a multicast frame will test positive on
5269 * a broadcast frame.
5271 if((mac_addr[0] == (uint8_t) 0xff) && (mac_addr[1] == (uint8_t) 0xff))
5272 /* Broadcast packet */
5274 else if(*mac_addr & 0x01)
5275 /* Multicast packet */
5278 if(frame_len == hw->max_frame_size) {
5279 /* In this case, the hardware has overcounted the number of
5286 /* Adjust the bin counters when the extra byte put the frame in the
5287 * wrong bin. Remember that the frame_len was adjusted above.
5289 if(frame_len == 64) {
5292 } else if(frame_len == 127) {
5295 } else if(frame_len == 255) {
5298 } else if(frame_len == 511) {
5301 } else if(frame_len == 1023) {
5304 } else if(frame_len == 1522) {
5309 /******************************************************************************
5310 * Gets the current PCI bus type, speed, and width of the hardware
5312 * hw - Struct containing variables accessed by shared code
5313 *****************************************************************************/
5315 e1000_get_bus_info(struct e1000_hw *hw)
5319 switch (hw->mac_type) {
5320 case e1000_82542_rev2_0:
5321 case e1000_82542_rev2_1:
5322 hw->bus_type = e1000_bus_type_unknown;
5323 hw->bus_speed = e1000_bus_speed_unknown;
5324 hw->bus_width = e1000_bus_width_unknown;
5328 hw->bus_type = e1000_bus_type_pci_express;
5329 hw->bus_speed = e1000_bus_speed_2500;
5330 hw->bus_width = e1000_bus_width_pciex_1;
5333 hw->bus_type = e1000_bus_type_pci_express;
5334 hw->bus_speed = e1000_bus_speed_2500;
5335 hw->bus_width = e1000_bus_width_pciex_4;
5338 status = E1000_READ_REG(hw, STATUS);
5339 hw->bus_type = (status & E1000_STATUS_PCIX_MODE) ?
5340 e1000_bus_type_pcix : e1000_bus_type_pci;
5342 if(hw->device_id == E1000_DEV_ID_82546EB_QUAD_COPPER) {
5343 hw->bus_speed = (hw->bus_type == e1000_bus_type_pci) ?
5344 e1000_bus_speed_66 : e1000_bus_speed_120;
5345 } else if(hw->bus_type == e1000_bus_type_pci) {
5346 hw->bus_speed = (status & E1000_STATUS_PCI66) ?
5347 e1000_bus_speed_66 : e1000_bus_speed_33;
5349 switch (status & E1000_STATUS_PCIX_SPEED) {
5350 case E1000_STATUS_PCIX_SPEED_66:
5351 hw->bus_speed = e1000_bus_speed_66;
5353 case E1000_STATUS_PCIX_SPEED_100:
5354 hw->bus_speed = e1000_bus_speed_100;
5356 case E1000_STATUS_PCIX_SPEED_133:
5357 hw->bus_speed = e1000_bus_speed_133;
5360 hw->bus_speed = e1000_bus_speed_reserved;
5364 hw->bus_width = (status & E1000_STATUS_BUS64) ?
5365 e1000_bus_width_64 : e1000_bus_width_32;
5371 /******************************************************************************
5372 * Reads a value from one of the devices registers using port I/O (as opposed
5373 * memory mapped I/O). Only 82544 and newer devices support port I/O.
5375 * hw - Struct containing variables accessed by shared code
5376 * offset - offset to read from
5377 *****************************************************************************/
5379 e1000_read_reg_io(struct e1000_hw *hw,
5382 unsigned long io_addr = hw->io_base;
5383 unsigned long io_data = hw->io_base + 4;
5385 e1000_io_write(hw, io_addr, offset);
5386 return e1000_io_read(hw, io_data);
5390 /******************************************************************************
5391 * Writes a value to one of the devices registers using port I/O (as opposed to
5392 * memory mapped I/O). Only 82544 and newer devices support port I/O.
5394 * hw - Struct containing variables accessed by shared code
5395 * offset - offset to write to
5396 * value - value to write
5397 *****************************************************************************/
5399 e1000_write_reg_io(struct e1000_hw *hw,
5403 unsigned long io_addr = hw->io_base;
5404 unsigned long io_data = hw->io_base + 4;
5406 e1000_io_write(hw, io_addr, offset);
5407 e1000_io_write(hw, io_data, value);
5411 /******************************************************************************
5412 * Estimates the cable length.
5414 * hw - Struct containing variables accessed by shared code
5415 * min_length - The estimated minimum length
5416 * max_length - The estimated maximum length
5418 * returns: - E1000_ERR_XXX
5421 * This function always returns a ranged length (minimum & maximum).
5422 * So for M88 phy's, this function interprets the one value returned from the
5423 * register to the minimum and maximum range.
5424 * For IGP phy's, the function calculates the range by the AGC registers.
5425 *****************************************************************************/
5427 e1000_get_cable_length(struct e1000_hw *hw,
5428 uint16_t *min_length,
5429 uint16_t *max_length)
5432 uint16_t agc_value = 0;
5433 uint16_t cur_agc, min_agc = IGP01E1000_AGC_LENGTH_TABLE_SIZE;
5434 uint16_t max_agc = 0;
5435 uint16_t i, phy_data;
5436 uint16_t cable_length;
5438 DEBUGFUNC("e1000_get_cable_length");
5440 *min_length = *max_length = 0;
5442 /* Use old method for Phy older than IGP */
5443 if(hw->phy_type == e1000_phy_m88) {
5445 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS,
5449 cable_length = (phy_data & M88E1000_PSSR_CABLE_LENGTH) >>
5450 M88E1000_PSSR_CABLE_LENGTH_SHIFT;
5452 /* Convert the enum value to ranged values */
5453 switch (cable_length) {
5454 case e1000_cable_length_50:
5456 *max_length = e1000_igp_cable_length_50;
5458 case e1000_cable_length_50_80:
5459 *min_length = e1000_igp_cable_length_50;
5460 *max_length = e1000_igp_cable_length_80;
5462 case e1000_cable_length_80_110:
5463 *min_length = e1000_igp_cable_length_80;
5464 *max_length = e1000_igp_cable_length_110;
5466 case e1000_cable_length_110_140:
5467 *min_length = e1000_igp_cable_length_110;
5468 *max_length = e1000_igp_cable_length_140;
5470 case e1000_cable_length_140:
5471 *min_length = e1000_igp_cable_length_140;
5472 *max_length = e1000_igp_cable_length_170;
5475 return -E1000_ERR_PHY;
5478 } else if(hw->phy_type == e1000_phy_igp) { /* For IGP PHY */
5479 uint16_t agc_reg_array[IGP01E1000_PHY_CHANNEL_NUM] =
5480 {IGP01E1000_PHY_AGC_A,
5481 IGP01E1000_PHY_AGC_B,
5482 IGP01E1000_PHY_AGC_C,
5483 IGP01E1000_PHY_AGC_D};
5484 /* Read the AGC registers for all channels */
5485 for(i = 0; i < IGP01E1000_PHY_CHANNEL_NUM; i++) {
5487 ret_val = e1000_read_phy_reg(hw, agc_reg_array[i], &phy_data);
5491 cur_agc = phy_data >> IGP01E1000_AGC_LENGTH_SHIFT;
5493 /* Array bound check. */
5494 if((cur_agc >= IGP01E1000_AGC_LENGTH_TABLE_SIZE - 1) ||
5496 return -E1000_ERR_PHY;
5498 agc_value += cur_agc;
5500 /* Update minimal AGC value. */
5501 if(min_agc > cur_agc)
5505 /* Remove the minimal AGC result for length < 50m */
5506 if(agc_value < IGP01E1000_PHY_CHANNEL_NUM * e1000_igp_cable_length_50) {
5507 agc_value -= min_agc;
5509 /* Get the average length of the remaining 3 channels */
5510 agc_value /= (IGP01E1000_PHY_CHANNEL_NUM - 1);
5512 /* Get the average length of all the 4 channels. */
5513 agc_value /= IGP01E1000_PHY_CHANNEL_NUM;
5516 /* Set the range of the calculated length. */
5517 *min_length = ((e1000_igp_cable_length_table[agc_value] -
5518 IGP01E1000_AGC_RANGE) > 0) ?
5519 (e1000_igp_cable_length_table[agc_value] -
5520 IGP01E1000_AGC_RANGE) : 0;
5521 *max_length = e1000_igp_cable_length_table[agc_value] +
5522 IGP01E1000_AGC_RANGE;
5523 } else if (hw->phy_type == e1000_phy_igp_2) {
5524 uint16_t agc_reg_array[IGP02E1000_PHY_CHANNEL_NUM] =
5525 {IGP02E1000_PHY_AGC_A,
5526 IGP02E1000_PHY_AGC_B,
5527 IGP02E1000_PHY_AGC_C,
5528 IGP02E1000_PHY_AGC_D};
5529 /* Read the AGC registers for all channels */
5530 for (i = 0; i < IGP02E1000_PHY_CHANNEL_NUM; i++) {
5531 ret_val = e1000_read_phy_reg(hw, agc_reg_array[i], &phy_data);
5535 /* Getting bits 15:9, which represent the combination of course and
5536 * fine gain values. The result is a number that can be put into
5537 * the lookup table to obtain the approximate cable length. */
5538 cur_agc = (phy_data >> IGP02E1000_AGC_LENGTH_SHIFT) &
5539 IGP02E1000_AGC_LENGTH_MASK;
5541 /* Remove min & max AGC values from calculation. */
5542 if (e1000_igp_2_cable_length_table[min_agc] > e1000_igp_2_cable_length_table[cur_agc])
5544 if (e1000_igp_2_cable_length_table[max_agc] < e1000_igp_2_cable_length_table[cur_agc])
5547 agc_value += e1000_igp_2_cable_length_table[cur_agc];
5550 agc_value -= (e1000_igp_2_cable_length_table[min_agc] + e1000_igp_2_cable_length_table[max_agc]);
5551 agc_value /= (IGP02E1000_PHY_CHANNEL_NUM - 2);
5553 /* Calculate cable length with the error range of +/- 10 meters. */
5554 *min_length = ((agc_value - IGP02E1000_AGC_RANGE) > 0) ?
5555 (agc_value - IGP02E1000_AGC_RANGE) : 0;
5556 *max_length = agc_value + IGP02E1000_AGC_RANGE;
5559 return E1000_SUCCESS;
5562 /******************************************************************************
5563 * Check the cable polarity
5565 * hw - Struct containing variables accessed by shared code
5566 * polarity - output parameter : 0 - Polarity is not reversed
5567 * 1 - Polarity is reversed.
5569 * returns: - E1000_ERR_XXX
5572 * For phy's older then IGP, this function simply reads the polarity bit in the
5573 * Phy Status register. For IGP phy's, this bit is valid only if link speed is
5574 * 10 Mbps. If the link speed is 100 Mbps there is no polarity so this bit will
5575 * return 0. If the link speed is 1000 Mbps the polarity status is in the
5576 * IGP01E1000_PHY_PCS_INIT_REG.
5577 *****************************************************************************/
5579 e1000_check_polarity(struct e1000_hw *hw,
5585 DEBUGFUNC("e1000_check_polarity");
5587 if(hw->phy_type == e1000_phy_m88) {
5588 /* return the Polarity bit in the Status register. */
5589 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS,
5593 *polarity = (phy_data & M88E1000_PSSR_REV_POLARITY) >>
5594 M88E1000_PSSR_REV_POLARITY_SHIFT;
5595 } else if(hw->phy_type == e1000_phy_igp ||
5596 hw->phy_type == e1000_phy_igp_2) {
5597 /* Read the Status register to check the speed */
5598 ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_STATUS,
5603 /* If speed is 1000 Mbps, must read the IGP01E1000_PHY_PCS_INIT_REG to
5604 * find the polarity status */
5605 if((phy_data & IGP01E1000_PSSR_SPEED_MASK) ==
5606 IGP01E1000_PSSR_SPEED_1000MBPS) {
5608 /* Read the GIG initialization PCS register (0x00B4) */
5609 ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PCS_INIT_REG,
5614 /* Check the polarity bits */
5615 *polarity = (phy_data & IGP01E1000_PHY_POLARITY_MASK) ? 1 : 0;
5617 /* For 10 Mbps, read the polarity bit in the status register. (for
5618 * 100 Mbps this bit is always 0) */
5619 *polarity = phy_data & IGP01E1000_PSSR_POLARITY_REVERSED;
5622 return E1000_SUCCESS;
5625 /******************************************************************************
5626 * Check if Downshift occured
5628 * hw - Struct containing variables accessed by shared code
5629 * downshift - output parameter : 0 - No Downshift ocured.
5630 * 1 - Downshift ocured.
5632 * returns: - E1000_ERR_XXX
5635 * For phy's older then IGP, this function reads the Downshift bit in the Phy
5636 * Specific Status register. For IGP phy's, it reads the Downgrade bit in the
5637 * Link Health register. In IGP this bit is latched high, so the driver must
5638 * read it immediately after link is established.
5639 *****************************************************************************/
5641 e1000_check_downshift(struct e1000_hw *hw)
5646 DEBUGFUNC("e1000_check_downshift");
5648 if(hw->phy_type == e1000_phy_igp ||
5649 hw->phy_type == e1000_phy_igp_2) {
5650 ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_LINK_HEALTH,
5655 hw->speed_downgraded = (phy_data & IGP01E1000_PLHR_SS_DOWNGRADE) ? 1 : 0;
5656 } else if(hw->phy_type == e1000_phy_m88) {
5657 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS,
5662 hw->speed_downgraded = (phy_data & M88E1000_PSSR_DOWNSHIFT) >>
5663 M88E1000_PSSR_DOWNSHIFT_SHIFT;
5666 return E1000_SUCCESS;
5669 /*****************************************************************************
5671 * 82541_rev_2 & 82547_rev_2 have the capability to configure the DSP when a
5672 * gigabit link is achieved to improve link quality.
5674 * hw: Struct containing variables accessed by shared code
5676 * returns: - E1000_ERR_PHY if fail to read/write the PHY
5677 * E1000_SUCCESS at any other case.
5679 ****************************************************************************/
5682 e1000_config_dsp_after_link_change(struct e1000_hw *hw,
5686 uint16_t phy_data, phy_saved_data, speed, duplex, i;
5687 uint16_t dsp_reg_array[IGP01E1000_PHY_CHANNEL_NUM] =
5688 {IGP01E1000_PHY_AGC_PARAM_A,
5689 IGP01E1000_PHY_AGC_PARAM_B,
5690 IGP01E1000_PHY_AGC_PARAM_C,
5691 IGP01E1000_PHY_AGC_PARAM_D};
5692 uint16_t min_length, max_length;
5694 DEBUGFUNC("e1000_config_dsp_after_link_change");
5696 if(hw->phy_type != e1000_phy_igp)
5697 return E1000_SUCCESS;
5700 ret_val = e1000_get_speed_and_duplex(hw, &speed, &duplex);
5702 DEBUGOUT("Error getting link speed and duplex\n");
5706 if(speed == SPEED_1000) {
5708 e1000_get_cable_length(hw, &min_length, &max_length);
5710 if((hw->dsp_config_state == e1000_dsp_config_enabled) &&
5711 min_length >= e1000_igp_cable_length_50) {
5713 for(i = 0; i < IGP01E1000_PHY_CHANNEL_NUM; i++) {
5714 ret_val = e1000_read_phy_reg(hw, dsp_reg_array[i],
5719 phy_data &= ~IGP01E1000_PHY_EDAC_MU_INDEX;
5721 ret_val = e1000_write_phy_reg(hw, dsp_reg_array[i],
5726 hw->dsp_config_state = e1000_dsp_config_activated;
5729 if((hw->ffe_config_state == e1000_ffe_config_enabled) &&
5730 (min_length < e1000_igp_cable_length_50)) {
5732 uint16_t ffe_idle_err_timeout = FFE_IDLE_ERR_COUNT_TIMEOUT_20;
5733 uint32_t idle_errs = 0;
5735 /* clear previous idle error counts */
5736 ret_val = e1000_read_phy_reg(hw, PHY_1000T_STATUS,
5741 for(i = 0; i < ffe_idle_err_timeout; i++) {
5743 ret_val = e1000_read_phy_reg(hw, PHY_1000T_STATUS,
5748 idle_errs += (phy_data & SR_1000T_IDLE_ERROR_CNT);
5749 if(idle_errs > SR_1000T_PHY_EXCESSIVE_IDLE_ERR_COUNT) {
5750 hw->ffe_config_state = e1000_ffe_config_active;
5752 ret_val = e1000_write_phy_reg(hw,
5753 IGP01E1000_PHY_DSP_FFE,
5754 IGP01E1000_PHY_DSP_FFE_CM_CP);
5761 ffe_idle_err_timeout = FFE_IDLE_ERR_COUNT_TIMEOUT_100;
5766 if(hw->dsp_config_state == e1000_dsp_config_activated) {
5767 /* Save off the current value of register 0x2F5B to be restored at
5768 * the end of the routines. */
5769 ret_val = e1000_read_phy_reg(hw, 0x2F5B, &phy_saved_data);
5774 /* Disable the PHY transmitter */
5775 ret_val = e1000_write_phy_reg(hw, 0x2F5B, 0x0003);
5782 ret_val = e1000_write_phy_reg(hw, 0x0000,
5783 IGP01E1000_IEEE_FORCE_GIGA);
5786 for(i = 0; i < IGP01E1000_PHY_CHANNEL_NUM; i++) {
5787 ret_val = e1000_read_phy_reg(hw, dsp_reg_array[i], &phy_data);
5791 phy_data &= ~IGP01E1000_PHY_EDAC_MU_INDEX;
5792 phy_data |= IGP01E1000_PHY_EDAC_SIGN_EXT_9_BITS;
5794 ret_val = e1000_write_phy_reg(hw,dsp_reg_array[i], phy_data);
5799 ret_val = e1000_write_phy_reg(hw, 0x0000,
5800 IGP01E1000_IEEE_RESTART_AUTONEG);
5806 /* Now enable the transmitter */
5807 ret_val = e1000_write_phy_reg(hw, 0x2F5B, phy_saved_data);
5812 hw->dsp_config_state = e1000_dsp_config_enabled;
5815 if(hw->ffe_config_state == e1000_ffe_config_active) {
5816 /* Save off the current value of register 0x2F5B to be restored at
5817 * the end of the routines. */
5818 ret_val = e1000_read_phy_reg(hw, 0x2F5B, &phy_saved_data);
5823 /* Disable the PHY transmitter */
5824 ret_val = e1000_write_phy_reg(hw, 0x2F5B, 0x0003);
5831 ret_val = e1000_write_phy_reg(hw, 0x0000,
5832 IGP01E1000_IEEE_FORCE_GIGA);
5835 ret_val = e1000_write_phy_reg(hw, IGP01E1000_PHY_DSP_FFE,
5836 IGP01E1000_PHY_DSP_FFE_DEFAULT);
5840 ret_val = e1000_write_phy_reg(hw, 0x0000,
5841 IGP01E1000_IEEE_RESTART_AUTONEG);
5847 /* Now enable the transmitter */
5848 ret_val = e1000_write_phy_reg(hw, 0x2F5B, phy_saved_data);
5853 hw->ffe_config_state = e1000_ffe_config_enabled;
5856 return E1000_SUCCESS;
5859 /*****************************************************************************
5860 * Set PHY to class A mode
5861 * Assumes the following operations will follow to enable the new class mode.
5862 * 1. Do a PHY soft reset
5863 * 2. Restart auto-negotiation or force link.
5865 * hw - Struct containing variables accessed by shared code
5866 ****************************************************************************/
5868 e1000_set_phy_mode(struct e1000_hw *hw)
5871 uint16_t eeprom_data;
5873 DEBUGFUNC("e1000_set_phy_mode");
5875 if((hw->mac_type == e1000_82545_rev_3) &&
5876 (hw->media_type == e1000_media_type_copper)) {
5877 ret_val = e1000_read_eeprom(hw, EEPROM_PHY_CLASS_WORD, 1, &eeprom_data);
5882 if((eeprom_data != EEPROM_RESERVED_WORD) &&
5883 (eeprom_data & EEPROM_PHY_CLASS_A)) {
5884 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x000B);
5887 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, 0x8104);
5891 hw->phy_reset_disable = FALSE;
5895 return E1000_SUCCESS;
5898 /*****************************************************************************
5900 * This function sets the lplu state according to the active flag. When
5901 * activating lplu this function also disables smart speed and vise versa.
5902 * lplu will not be activated unless the device autonegotiation advertisment
5903 * meets standards of either 10 or 10/100 or 10/100/1000 at all duplexes.
5904 * hw: Struct containing variables accessed by shared code
5905 * active - true to enable lplu false to disable lplu.
5907 * returns: - E1000_ERR_PHY if fail to read/write the PHY
5908 * E1000_SUCCESS at any other case.
5910 ****************************************************************************/
5913 e1000_set_d3_lplu_state(struct e1000_hw *hw,
5918 DEBUGFUNC("e1000_set_d3_lplu_state");
5920 if(hw->phy_type != e1000_phy_igp && hw->phy_type != e1000_phy_igp_2)
5921 return E1000_SUCCESS;
5923 /* During driver activity LPLU should not be used or it will attain link
5924 * from the lowest speeds starting from 10Mbps. The capability is used for
5925 * Dx transitions and states */
5926 if(hw->mac_type == e1000_82541_rev_2 || hw->mac_type == e1000_82547_rev_2) {
5927 ret_val = e1000_read_phy_reg(hw, IGP01E1000_GMII_FIFO, &phy_data);
5931 ret_val = e1000_read_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT, &phy_data);
5937 if(hw->mac_type == e1000_82541_rev_2 ||
5938 hw->mac_type == e1000_82547_rev_2) {
5939 phy_data &= ~IGP01E1000_GMII_FLEX_SPD;
5940 ret_val = e1000_write_phy_reg(hw, IGP01E1000_GMII_FIFO, phy_data);
5944 phy_data &= ~IGP02E1000_PM_D3_LPLU;
5945 ret_val = e1000_write_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT,
5951 /* LPLU and SmartSpeed are mutually exclusive. LPLU is used during
5952 * Dx states where the power conservation is most important. During
5953 * driver activity we should enable SmartSpeed, so performance is
5955 if (hw->smart_speed == e1000_smart_speed_on) {
5956 ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
5961 phy_data |= IGP01E1000_PSCFR_SMART_SPEED;
5962 ret_val = e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
5966 } else if (hw->smart_speed == e1000_smart_speed_off) {
5967 ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
5972 phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
5973 ret_val = e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
5979 } else if((hw->autoneg_advertised == AUTONEG_ADVERTISE_SPEED_DEFAULT) ||
5980 (hw->autoneg_advertised == AUTONEG_ADVERTISE_10_ALL ) ||
5981 (hw->autoneg_advertised == AUTONEG_ADVERTISE_10_100_ALL)) {
5983 if(hw->mac_type == e1000_82541_rev_2 ||
5984 hw->mac_type == e1000_82547_rev_2) {
5985 phy_data |= IGP01E1000_GMII_FLEX_SPD;
5986 ret_val = e1000_write_phy_reg(hw, IGP01E1000_GMII_FIFO, phy_data);
5990 phy_data |= IGP02E1000_PM_D3_LPLU;
5991 ret_val = e1000_write_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT,
5997 /* When LPLU is enabled we should disable SmartSpeed */
5998 ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, &phy_data);
6002 phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
6003 ret_val = e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, phy_data);
6008 return E1000_SUCCESS;
6011 /*****************************************************************************
6013 * This function sets the lplu d0 state according to the active flag. When
6014 * activating lplu this function also disables smart speed and vise versa.
6015 * lplu will not be activated unless the device autonegotiation advertisment
6016 * meets standards of either 10 or 10/100 or 10/100/1000 at all duplexes.
6017 * hw: Struct containing variables accessed by shared code
6018 * active - true to enable lplu false to disable lplu.
6020 * returns: - E1000_ERR_PHY if fail to read/write the PHY
6021 * E1000_SUCCESS at any other case.
6023 ****************************************************************************/
6026 e1000_set_d0_lplu_state(struct e1000_hw *hw,
6031 DEBUGFUNC("e1000_set_d0_lplu_state");
6033 if(hw->mac_type <= e1000_82547_rev_2)
6034 return E1000_SUCCESS;
6036 ret_val = e1000_read_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT, &phy_data);
6041 phy_data &= ~IGP02E1000_PM_D0_LPLU;
6042 ret_val = e1000_write_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT, phy_data);
6046 /* LPLU and SmartSpeed are mutually exclusive. LPLU is used during
6047 * Dx states where the power conservation is most important. During
6048 * driver activity we should enable SmartSpeed, so performance is
6050 if (hw->smart_speed == e1000_smart_speed_on) {
6051 ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
6056 phy_data |= IGP01E1000_PSCFR_SMART_SPEED;
6057 ret_val = e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
6061 } else if (hw->smart_speed == e1000_smart_speed_off) {
6062 ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
6067 phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
6068 ret_val = e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
6077 phy_data |= IGP02E1000_PM_D0_LPLU;
6078 ret_val = e1000_write_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT, phy_data);
6082 /* When LPLU is enabled we should disable SmartSpeed */
6083 ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, &phy_data);
6087 phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
6088 ret_val = e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, phy_data);
6093 return E1000_SUCCESS;
6096 /******************************************************************************
6097 * Change VCO speed register to improve Bit Error Rate performance of SERDES.
6099 * hw - Struct containing variables accessed by shared code
6100 *****************************************************************************/
6102 e1000_set_vco_speed(struct e1000_hw *hw)
6105 uint16_t default_page = 0;
6108 DEBUGFUNC("e1000_set_vco_speed");
6110 switch(hw->mac_type) {
6111 case e1000_82545_rev_3:
6112 case e1000_82546_rev_3:
6115 return E1000_SUCCESS;
6118 /* Set PHY register 30, page 5, bit 8 to 0 */
6120 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, &default_page);
6124 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0005);
6128 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, &phy_data);
6132 phy_data &= ~M88E1000_PHY_VCO_REG_BIT8;
6133 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, phy_data);
6137 /* Set PHY register 30, page 4, bit 11 to 1 */
6139 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0004);
6143 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, &phy_data);
6147 phy_data |= M88E1000_PHY_VCO_REG_BIT11;
6148 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, phy_data);
6152 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, default_page);
6156 return E1000_SUCCESS;
6160 /*****************************************************************************
6161 * This function reads the cookie from ARC ram.
6163 * returns: - E1000_SUCCESS .
6164 ****************************************************************************/
6166 e1000_host_if_read_cookie(struct e1000_hw * hw, uint8_t *buffer)
6169 uint32_t offset = E1000_MNG_DHCP_COOKIE_OFFSET;
6170 uint8_t length = E1000_MNG_DHCP_COOKIE_LENGTH;
6172 length = (length >> 2);
6173 offset = (offset >> 2);
6175 for (i = 0; i < length; i++) {
6176 *((uint32_t *) buffer + i) =
6177 E1000_READ_REG_ARRAY_DWORD(hw, HOST_IF, offset + i);
6179 return E1000_SUCCESS;
6183 /*****************************************************************************
6184 * This function checks whether the HOST IF is enabled for command operaton
6185 * and also checks whether the previous command is completed.
6186 * It busy waits in case of previous command is not completed.
6188 * returns: - E1000_ERR_HOST_INTERFACE_COMMAND in case if is not ready or
6190 * - E1000_SUCCESS for success.
6191 ****************************************************************************/
6193 e1000_mng_enable_host_if(struct e1000_hw * hw)
6198 /* Check that the host interface is enabled. */
6199 hicr = E1000_READ_REG(hw, HICR);
6200 if ((hicr & E1000_HICR_EN) == 0) {
6201 DEBUGOUT("E1000_HOST_EN bit disabled.\n");
6202 return -E1000_ERR_HOST_INTERFACE_COMMAND;
6204 /* check the previous command is completed */
6205 for (i = 0; i < E1000_MNG_DHCP_COMMAND_TIMEOUT; i++) {
6206 hicr = E1000_READ_REG(hw, HICR);
6207 if (!(hicr & E1000_HICR_C))
6212 if (i == E1000_MNG_DHCP_COMMAND_TIMEOUT) {
6213 DEBUGOUT("Previous command timeout failed .\n");
6214 return -E1000_ERR_HOST_INTERFACE_COMMAND;
6216 return E1000_SUCCESS;
6219 /*****************************************************************************
6220 * This function writes the buffer content at the offset given on the host if.
6221 * It also does alignment considerations to do the writes in most efficient way.
6222 * Also fills up the sum of the buffer in *buffer parameter.
6224 * returns - E1000_SUCCESS for success.
6225 ****************************************************************************/
6227 e1000_mng_host_if_write(struct e1000_hw * hw, uint8_t *buffer,
6228 uint16_t length, uint16_t offset, uint8_t *sum)
6231 uint8_t *bufptr = buffer;
6233 uint16_t remaining, i, j, prev_bytes;
6235 /* sum = only sum of the data and it is not checksum */
6237 if (length == 0 || offset + length > E1000_HI_MAX_MNG_DATA_LENGTH) {
6238 return -E1000_ERR_PARAM;
6241 tmp = (uint8_t *)&data;
6242 prev_bytes = offset & 0x3;
6247 data = E1000_READ_REG_ARRAY_DWORD(hw, HOST_IF, offset);
6248 for (j = prev_bytes; j < sizeof(uint32_t); j++) {
6249 *(tmp + j) = *bufptr++;
6252 E1000_WRITE_REG_ARRAY_DWORD(hw, HOST_IF, offset, data);
6253 length -= j - prev_bytes;
6257 remaining = length & 0x3;
6258 length -= remaining;
6260 /* Calculate length in DWORDs */
6263 /* The device driver writes the relevant command block into the
6265 for (i = 0; i < length; i++) {
6266 for (j = 0; j < sizeof(uint32_t); j++) {
6267 *(tmp + j) = *bufptr++;
6271 E1000_WRITE_REG_ARRAY_DWORD(hw, HOST_IF, offset + i, data);
6274 for (j = 0; j < sizeof(uint32_t); j++) {
6276 *(tmp + j) = *bufptr++;
6282 E1000_WRITE_REG_ARRAY_DWORD(hw, HOST_IF, offset + i, data);
6285 return E1000_SUCCESS;
6289 /*****************************************************************************
6290 * This function writes the command header after does the checksum calculation.
6292 * returns - E1000_SUCCESS for success.
6293 ****************************************************************************/
6295 e1000_mng_write_cmd_header(struct e1000_hw * hw,
6296 struct e1000_host_mng_command_header * hdr)
6302 /* Write the whole command header structure which includes sum of
6305 uint16_t length = sizeof(struct e1000_host_mng_command_header);
6307 sum = hdr->checksum;
6310 buffer = (uint8_t *) hdr;
6315 hdr->checksum = 0 - sum;
6318 /* The device driver writes the relevant command block into the ram area. */
6319 for (i = 0; i < length; i++)
6320 E1000_WRITE_REG_ARRAY_DWORD(hw, HOST_IF, i, *((uint32_t *) hdr + i));
6322 return E1000_SUCCESS;
6326 /*****************************************************************************
6327 * This function indicates to ARC that a new command is pending which completes
6328 * one write operation by the driver.
6330 * returns - E1000_SUCCESS for success.
6331 ****************************************************************************/
6333 e1000_mng_write_commit(
6334 struct e1000_hw * hw)
6338 hicr = E1000_READ_REG(hw, HICR);
6339 /* Setting this bit tells the ARC that a new command is pending. */
6340 E1000_WRITE_REG(hw, HICR, hicr | E1000_HICR_C);
6342 return E1000_SUCCESS;
6346 /*****************************************************************************
6347 * This function checks the mode of the firmware.
6349 * returns - TRUE when the mode is IAMT or FALSE.
6350 ****************************************************************************/
6352 e1000_check_mng_mode(
6353 struct e1000_hw *hw)
6357 fwsm = E1000_READ_REG(hw, FWSM);
6359 if((fwsm & E1000_FWSM_MODE_MASK) ==
6360 (E1000_MNG_IAMT_MODE << E1000_FWSM_MODE_SHIFT))
6367 /*****************************************************************************
6368 * This function writes the dhcp info .
6369 ****************************************************************************/
6371 e1000_mng_write_dhcp_info(struct e1000_hw * hw, uint8_t *buffer,
6375 struct e1000_host_mng_command_header hdr;
6377 hdr.command_id = E1000_MNG_DHCP_TX_PAYLOAD_CMD;
6378 hdr.command_length = length;
6383 ret_val = e1000_mng_enable_host_if(hw);
6384 if (ret_val == E1000_SUCCESS) {
6385 ret_val = e1000_mng_host_if_write(hw, buffer, length, sizeof(hdr),
6387 if (ret_val == E1000_SUCCESS) {
6388 ret_val = e1000_mng_write_cmd_header(hw, &hdr);
6389 if (ret_val == E1000_SUCCESS)
6390 ret_val = e1000_mng_write_commit(hw);
6397 /*****************************************************************************
6398 * This function calculates the checksum.
6400 * returns - checksum of buffer contents.
6401 ****************************************************************************/
6403 e1000_calculate_mng_checksum(char *buffer, uint32_t length)
6411 for (i=0; i < length; i++)
6414 return (uint8_t) (0 - sum);
6417 /*****************************************************************************
6418 * This function checks whether tx pkt filtering needs to be enabled or not.
6420 * returns - TRUE for packet filtering or FALSE.
6421 ****************************************************************************/
6423 e1000_enable_tx_pkt_filtering(struct e1000_hw *hw)
6425 /* called in init as well as watchdog timer functions */
6427 int32_t ret_val, checksum;
6428 boolean_t tx_filter = FALSE;
6429 struct e1000_host_mng_dhcp_cookie *hdr = &(hw->mng_cookie);
6430 uint8_t *buffer = (uint8_t *) &(hw->mng_cookie);
6432 if (e1000_check_mng_mode(hw)) {
6433 ret_val = e1000_mng_enable_host_if(hw);
6434 if (ret_val == E1000_SUCCESS) {
6435 ret_val = e1000_host_if_read_cookie(hw, buffer);
6436 if (ret_val == E1000_SUCCESS) {
6437 checksum = hdr->checksum;
6439 if ((hdr->signature == E1000_IAMT_SIGNATURE) &&
6440 checksum == e1000_calculate_mng_checksum((char *)buffer,
6441 E1000_MNG_DHCP_COOKIE_LENGTH)) {
6443 E1000_MNG_DHCP_COOKIE_STATUS_PARSING_SUPPORT)
6452 hw->tx_pkt_filtering = tx_filter;
6456 /******************************************************************************
6457 * Verifies the hardware needs to allow ARPs to be processed by the host
6459 * hw - Struct containing variables accessed by shared code
6461 * returns: - TRUE/FALSE
6463 *****************************************************************************/
6465 e1000_enable_mng_pass_thru(struct e1000_hw *hw)
6468 uint32_t fwsm, factps;
6470 if (hw->asf_firmware_present) {
6471 manc = E1000_READ_REG(hw, MANC);
6473 if (!(manc & E1000_MANC_RCV_TCO_EN) ||
6474 !(manc & E1000_MANC_EN_MAC_ADDR_FILTER))
6476 if (e1000_arc_subsystem_valid(hw) == TRUE) {
6477 fwsm = E1000_READ_REG(hw, FWSM);
6478 factps = E1000_READ_REG(hw, FACTPS);
6480 if (((fwsm & E1000_FWSM_MODE_MASK) ==
6481 (e1000_mng_mode_pt << E1000_FWSM_MODE_SHIFT)) &&
6482 (factps & E1000_FACTPS_MNGCG))
6485 if ((manc & E1000_MANC_SMBUS_EN) && !(manc & E1000_MANC_ASF_EN))
6492 e1000_polarity_reversal_workaround(struct e1000_hw *hw)
6495 uint16_t mii_status_reg;
6498 /* Polarity reversal workaround for forced 10F/10H links. */
6500 /* Disable the transmitter on the PHY */
6502 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0019);
6505 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, 0xFFFF);
6509 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0000);
6513 /* This loop will early-out if the NO link condition has been met. */
6514 for(i = PHY_FORCE_TIME; i > 0; i--) {
6515 /* Read the MII Status Register and wait for Link Status bit
6519 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
6523 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
6527 if((mii_status_reg & ~MII_SR_LINK_STATUS) == 0) break;
6528 msec_delay_irq(100);
6531 /* Recommended delay time after link has been lost */
6532 msec_delay_irq(1000);
6534 /* Now we will re-enable th transmitter on the PHY */
6536 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0019);
6540 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, 0xFFF0);
6544 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, 0xFF00);
6548 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, 0x0000);
6552 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0000);
6556 /* This loop will early-out if the link condition has been met. */
6557 for(i = PHY_FORCE_TIME; i > 0; i--) {
6558 /* Read the MII Status Register and wait for Link Status bit
6562 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
6566 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
6570 if(mii_status_reg & MII_SR_LINK_STATUS) break;
6571 msec_delay_irq(100);
6573 return E1000_SUCCESS;
6576 /***************************************************************************
6578 * Disables PCI-Express master access.
6580 * hw: Struct containing variables accessed by shared code
6584 ***************************************************************************/
6586 e1000_set_pci_express_master_disable(struct e1000_hw *hw)
6590 DEBUGFUNC("e1000_set_pci_express_master_disable");
6592 if (hw->bus_type != e1000_bus_type_pci_express)
6595 ctrl = E1000_READ_REG(hw, CTRL);
6596 ctrl |= E1000_CTRL_GIO_MASTER_DISABLE;
6597 E1000_WRITE_REG(hw, CTRL, ctrl);
6601 /***************************************************************************
6603 * Enables PCI-Express master access.
6605 * hw: Struct containing variables accessed by shared code
6609 ***************************************************************************/
6611 e1000_enable_pciex_master(struct e1000_hw *hw)
6615 DEBUGFUNC("e1000_enable_pciex_master");
6617 if (hw->bus_type != e1000_bus_type_pci_express)
6620 ctrl = E1000_READ_REG(hw, CTRL);
6621 ctrl &= ~E1000_CTRL_GIO_MASTER_DISABLE;
6622 E1000_WRITE_REG(hw, CTRL, ctrl);
6626 /*******************************************************************************
6628 * Disables PCI-Express master access and verifies there are no pending requests
6630 * hw: Struct containing variables accessed by shared code
6632 * returns: - E1000_ERR_MASTER_REQUESTS_PENDING if master disable bit hasn't
6633 * caused the master requests to be disabled.
6634 * E1000_SUCCESS master requests disabled.
6636 ******************************************************************************/
6638 e1000_disable_pciex_master(struct e1000_hw *hw)
6640 int32_t timeout = MASTER_DISABLE_TIMEOUT; /* 80ms */
6642 DEBUGFUNC("e1000_disable_pciex_master");
6644 if (hw->bus_type != e1000_bus_type_pci_express)
6645 return E1000_SUCCESS;
6647 e1000_set_pci_express_master_disable(hw);
6650 if(!(E1000_READ_REG(hw, STATUS) & E1000_STATUS_GIO_MASTER_ENABLE))
6658 DEBUGOUT("Master requests are pending.\n");
6659 return -E1000_ERR_MASTER_REQUESTS_PENDING;
6662 return E1000_SUCCESS;
6665 /*******************************************************************************
6667 * Check for EEPROM Auto Read bit done.
6669 * hw: Struct containing variables accessed by shared code
6671 * returns: - E1000_ERR_RESET if fail to reset MAC
6672 * E1000_SUCCESS at any other case.
6674 ******************************************************************************/
6676 e1000_get_auto_rd_done(struct e1000_hw *hw)
6678 int32_t timeout = AUTO_READ_DONE_TIMEOUT;
6680 DEBUGFUNC("e1000_get_auto_rd_done");
6682 switch (hw->mac_type) {
6690 if (E1000_READ_REG(hw, EECD) & E1000_EECD_AUTO_RD) break;
6696 DEBUGOUT("Auto read by HW from EEPROM has not completed.\n");
6697 return -E1000_ERR_RESET;
6702 /* PHY configuration from NVM just starts after EECD_AUTO_RD sets to high.
6703 * Need to wait for PHY configuration completion before accessing NVM
6705 if (hw->mac_type == e1000_82573)
6708 return E1000_SUCCESS;
6711 /***************************************************************************
6712 * Checks if the PHY configuration is done
6714 * hw: Struct containing variables accessed by shared code
6716 * returns: - E1000_ERR_RESET if fail to reset MAC
6717 * E1000_SUCCESS at any other case.
6719 ***************************************************************************/
6721 e1000_get_phy_cfg_done(struct e1000_hw *hw)
6723 int32_t timeout = PHY_CFG_TIMEOUT;
6724 uint32_t cfg_mask = E1000_EEPROM_CFG_DONE;
6726 DEBUGFUNC("e1000_get_phy_cfg_done");
6728 switch (hw->mac_type) {
6735 if (E1000_READ_REG(hw, EEMNGCTL) & cfg_mask)
6743 DEBUGOUT("MNG configuration cycle has not completed.\n");
6744 return -E1000_ERR_RESET;
6749 /* PHY configuration from NVM just starts after EECD_AUTO_RD sets to high.
6750 * Need to wait for PHY configuration completion before accessing NVM
6752 if (hw->mac_type == e1000_82573)
6755 return E1000_SUCCESS;
6758 /***************************************************************************
6760 * Using the combination of SMBI and SWESMBI semaphore bits when resetting
6761 * adapter or Eeprom access.
6763 * hw: Struct containing variables accessed by shared code
6765 * returns: - E1000_ERR_EEPROM if fail to access EEPROM.
6766 * E1000_SUCCESS at any other case.
6768 ***************************************************************************/
6770 e1000_get_hw_eeprom_semaphore(struct e1000_hw *hw)
6775 DEBUGFUNC("e1000_get_hw_eeprom_semaphore");
6777 if(!hw->eeprom_semaphore_present)
6778 return E1000_SUCCESS;
6781 /* Get the FW semaphore. */
6782 timeout = hw->eeprom.word_size + 1;
6784 swsm = E1000_READ_REG(hw, SWSM);
6785 swsm |= E1000_SWSM_SWESMBI;
6786 E1000_WRITE_REG(hw, SWSM, swsm);
6787 /* if we managed to set the bit we got the semaphore. */
6788 swsm = E1000_READ_REG(hw, SWSM);
6789 if(swsm & E1000_SWSM_SWESMBI)
6797 /* Release semaphores */
6798 e1000_put_hw_eeprom_semaphore(hw);
6799 DEBUGOUT("Driver can't access the Eeprom - SWESMBI bit is set.\n");
6800 return -E1000_ERR_EEPROM;
6803 return E1000_SUCCESS;
6806 /***************************************************************************
6807 * This function clears HW semaphore bits.
6809 * hw: Struct containing variables accessed by shared code
6813 ***************************************************************************/
6815 e1000_put_hw_eeprom_semaphore(struct e1000_hw *hw)
6819 DEBUGFUNC("e1000_put_hw_eeprom_semaphore");
6821 if(!hw->eeprom_semaphore_present)
6824 swsm = E1000_READ_REG(hw, SWSM);
6825 swsm &= ~(E1000_SWSM_SWESMBI);
6826 E1000_WRITE_REG(hw, SWSM, swsm);
6829 /******************************************************************************
6830 * Checks if PHY reset is blocked due to SOL/IDER session, for example.
6831 * Returning E1000_BLK_PHY_RESET isn't necessarily an error. But it's up to
6832 * the caller to figure out how to deal with it.
6834 * hw - Struct containing variables accessed by shared code
6836 * returns: - E1000_BLK_PHY_RESET
6839 *****************************************************************************/
6841 e1000_check_phy_reset_block(struct e1000_hw *hw)
6845 if (hw->mac_type > e1000_82547_rev_2)
6846 manc = E1000_READ_REG(hw, MANC);
6847 return (manc & E1000_MANC_BLK_PHY_RST_ON_IDE) ?
6848 E1000_BLK_PHY_RESET : E1000_SUCCESS;
6852 e1000_arc_subsystem_valid(struct e1000_hw *hw)
6856 /* On 8257x silicon, registers in the range of 0x8800 - 0x8FFC
6857 * may not be provided a DMA clock when no manageability features are
6858 * enabled. We do not want to perform any reads/writes to these registers
6859 * if this is the case. We read FWSM to determine the manageability mode.
6861 switch (hw->mac_type) {
6865 fwsm = E1000_READ_REG(hw, FWSM);
6866 if((fwsm & E1000_FWSM_MODE_MASK) != 0)