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);
72 /* IGP cable length table */
74 uint16_t e1000_igp_cable_length_table[IGP01E1000_AGC_LENGTH_TABLE_SIZE] =
75 { 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
76 5, 10, 10, 10, 10, 10, 10, 10, 20, 20, 20, 20, 20, 25, 25, 25,
77 25, 25, 25, 25, 30, 30, 30, 30, 40, 40, 40, 40, 40, 40, 40, 40,
78 40, 50, 50, 50, 50, 50, 50, 50, 60, 60, 60, 60, 60, 60, 60, 60,
79 60, 70, 70, 70, 70, 70, 70, 80, 80, 80, 80, 80, 80, 90, 90, 90,
80 90, 90, 90, 90, 90, 90, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100,
81 100, 100, 100, 100, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110,
82 110, 110, 110, 110, 110, 110, 120, 120, 120, 120, 120, 120, 120, 120, 120, 120};
85 uint16_t e1000_igp_2_cable_length_table[IGP02E1000_AGC_LENGTH_TABLE_SIZE] =
86 { 0, 0, 0, 0, 0, 0, 0, 0, 3, 5, 8, 11, 13, 16, 18, 21,
87 0, 0, 0, 3, 6, 10, 13, 16, 19, 23, 26, 29, 32, 35, 38, 41,
88 6, 10, 14, 18, 22, 26, 30, 33, 37, 41, 44, 48, 51, 54, 58, 61,
89 21, 26, 31, 35, 40, 44, 49, 53, 57, 61, 65, 68, 72, 75, 79, 82,
90 40, 45, 51, 56, 61, 66, 70, 75, 79, 83, 87, 91, 94, 98, 101, 104,
91 60, 66, 72, 77, 82, 87, 92, 96, 100, 104, 108, 111, 114, 117, 119, 121,
92 83, 89, 95, 100, 105, 109, 113, 116, 119, 122, 124,
93 104, 109, 114, 118, 121, 124};
96 /******************************************************************************
97 * Set the phy type member in the hw struct.
99 * hw - Struct containing variables accessed by shared code
100 *****************************************************************************/
102 e1000_set_phy_type(struct e1000_hw *hw)
104 DEBUGFUNC("e1000_set_phy_type");
106 if(hw->mac_type == e1000_undefined)
107 return -E1000_ERR_PHY_TYPE;
110 case M88E1000_E_PHY_ID:
111 case M88E1000_I_PHY_ID:
112 case M88E1011_I_PHY_ID:
113 case M88E1111_I_PHY_ID:
114 hw->phy_type = e1000_phy_m88;
116 case IGP01E1000_I_PHY_ID:
117 if(hw->mac_type == e1000_82541 ||
118 hw->mac_type == e1000_82541_rev_2 ||
119 hw->mac_type == e1000_82547 ||
120 hw->mac_type == e1000_82547_rev_2) {
121 hw->phy_type = e1000_phy_igp;
126 /* Should never have loaded on this device */
127 hw->phy_type = e1000_phy_undefined;
128 return -E1000_ERR_PHY_TYPE;
131 return E1000_SUCCESS;
134 /******************************************************************************
135 * IGP phy init script - initializes the GbE PHY
137 * hw - Struct containing variables accessed by shared code
138 *****************************************************************************/
140 e1000_phy_init_script(struct e1000_hw *hw)
143 uint16_t phy_saved_data;
145 DEBUGFUNC("e1000_phy_init_script");
147 if(hw->phy_init_script) {
150 /* Save off the current value of register 0x2F5B to be restored at
151 * the end of this routine. */
152 ret_val = e1000_read_phy_reg(hw, 0x2F5B, &phy_saved_data);
154 /* Disabled the PHY transmitter */
155 e1000_write_phy_reg(hw, 0x2F5B, 0x0003);
159 e1000_write_phy_reg(hw,0x0000,0x0140);
163 switch(hw->mac_type) {
166 e1000_write_phy_reg(hw, 0x1F95, 0x0001);
168 e1000_write_phy_reg(hw, 0x1F71, 0xBD21);
170 e1000_write_phy_reg(hw, 0x1F79, 0x0018);
172 e1000_write_phy_reg(hw, 0x1F30, 0x1600);
174 e1000_write_phy_reg(hw, 0x1F31, 0x0014);
176 e1000_write_phy_reg(hw, 0x1F32, 0x161C);
178 e1000_write_phy_reg(hw, 0x1F94, 0x0003);
180 e1000_write_phy_reg(hw, 0x1F96, 0x003F);
182 e1000_write_phy_reg(hw, 0x2010, 0x0008);
185 case e1000_82541_rev_2:
186 case e1000_82547_rev_2:
187 e1000_write_phy_reg(hw, 0x1F73, 0x0099);
193 e1000_write_phy_reg(hw, 0x0000, 0x3300);
197 /* Now enable the transmitter */
198 e1000_write_phy_reg(hw, 0x2F5B, phy_saved_data);
200 if(hw->mac_type == e1000_82547) {
201 uint16_t fused, fine, coarse;
203 /* Move to analog registers page */
204 e1000_read_phy_reg(hw, IGP01E1000_ANALOG_SPARE_FUSE_STATUS, &fused);
206 if(!(fused & IGP01E1000_ANALOG_SPARE_FUSE_ENABLED)) {
207 e1000_read_phy_reg(hw, IGP01E1000_ANALOG_FUSE_STATUS, &fused);
209 fine = fused & IGP01E1000_ANALOG_FUSE_FINE_MASK;
210 coarse = fused & IGP01E1000_ANALOG_FUSE_COARSE_MASK;
212 if(coarse > IGP01E1000_ANALOG_FUSE_COARSE_THRESH) {
213 coarse -= IGP01E1000_ANALOG_FUSE_COARSE_10;
214 fine -= IGP01E1000_ANALOG_FUSE_FINE_1;
215 } else if(coarse == IGP01E1000_ANALOG_FUSE_COARSE_THRESH)
216 fine -= IGP01E1000_ANALOG_FUSE_FINE_10;
218 fused = (fused & IGP01E1000_ANALOG_FUSE_POLY_MASK) |
219 (fine & IGP01E1000_ANALOG_FUSE_FINE_MASK) |
220 (coarse & IGP01E1000_ANALOG_FUSE_COARSE_MASK);
222 e1000_write_phy_reg(hw, IGP01E1000_ANALOG_FUSE_CONTROL, fused);
223 e1000_write_phy_reg(hw, IGP01E1000_ANALOG_FUSE_BYPASS,
224 IGP01E1000_ANALOG_FUSE_ENABLE_SW_CONTROL);
230 /******************************************************************************
231 * Set the mac type member in the hw struct.
233 * hw - Struct containing variables accessed by shared code
234 *****************************************************************************/
236 e1000_set_mac_type(struct e1000_hw *hw)
238 DEBUGFUNC("e1000_set_mac_type");
240 switch (hw->device_id) {
241 case E1000_DEV_ID_82542:
242 switch (hw->revision_id) {
243 case E1000_82542_2_0_REV_ID:
244 hw->mac_type = e1000_82542_rev2_0;
246 case E1000_82542_2_1_REV_ID:
247 hw->mac_type = e1000_82542_rev2_1;
250 /* Invalid 82542 revision ID */
251 return -E1000_ERR_MAC_TYPE;
254 case E1000_DEV_ID_82543GC_FIBER:
255 case E1000_DEV_ID_82543GC_COPPER:
256 hw->mac_type = e1000_82543;
258 case E1000_DEV_ID_82544EI_COPPER:
259 case E1000_DEV_ID_82544EI_FIBER:
260 case E1000_DEV_ID_82544GC_COPPER:
261 case E1000_DEV_ID_82544GC_LOM:
262 hw->mac_type = e1000_82544;
264 case E1000_DEV_ID_82540EM:
265 case E1000_DEV_ID_82540EM_LOM:
266 case E1000_DEV_ID_82540EP:
267 case E1000_DEV_ID_82540EP_LOM:
268 case E1000_DEV_ID_82540EP_LP:
269 hw->mac_type = e1000_82540;
271 case E1000_DEV_ID_82545EM_COPPER:
272 case E1000_DEV_ID_82545EM_FIBER:
273 hw->mac_type = e1000_82545;
275 case E1000_DEV_ID_82545GM_COPPER:
276 case E1000_DEV_ID_82545GM_FIBER:
277 case E1000_DEV_ID_82545GM_SERDES:
278 hw->mac_type = e1000_82545_rev_3;
280 case E1000_DEV_ID_82546EB_COPPER:
281 case E1000_DEV_ID_82546EB_FIBER:
282 case E1000_DEV_ID_82546EB_QUAD_COPPER:
283 hw->mac_type = e1000_82546;
285 case E1000_DEV_ID_82546GB_COPPER:
286 case E1000_DEV_ID_82546GB_FIBER:
287 case E1000_DEV_ID_82546GB_SERDES:
288 case E1000_DEV_ID_82546GB_PCIE:
289 hw->mac_type = e1000_82546_rev_3;
291 case E1000_DEV_ID_82541EI:
292 case E1000_DEV_ID_82541EI_MOBILE:
293 hw->mac_type = e1000_82541;
295 case E1000_DEV_ID_82541ER:
296 case E1000_DEV_ID_82541GI:
297 case E1000_DEV_ID_82541GI_LF:
298 case E1000_DEV_ID_82541GI_MOBILE:
299 hw->mac_type = e1000_82541_rev_2;
301 case E1000_DEV_ID_82547EI:
302 hw->mac_type = e1000_82547;
304 case E1000_DEV_ID_82547GI:
305 hw->mac_type = e1000_82547_rev_2;
307 case E1000_DEV_ID_82571EB_COPPER:
308 case E1000_DEV_ID_82571EB_FIBER:
309 case E1000_DEV_ID_82571EB_SERDES:
310 hw->mac_type = e1000_82571;
312 case E1000_DEV_ID_82572EI_COPPER:
313 case E1000_DEV_ID_82572EI_FIBER:
314 case E1000_DEV_ID_82572EI_SERDES:
315 hw->mac_type = e1000_82572;
317 case E1000_DEV_ID_82573E:
318 case E1000_DEV_ID_82573E_IAMT:
319 case E1000_DEV_ID_82573L:
320 hw->mac_type = e1000_82573;
323 /* Should never have loaded on this device */
324 return -E1000_ERR_MAC_TYPE;
327 switch(hw->mac_type) {
331 hw->eeprom_semaphore_present = TRUE;
335 case e1000_82541_rev_2:
336 case e1000_82547_rev_2:
337 hw->asf_firmware_present = TRUE;
343 return E1000_SUCCESS;
346 /*****************************************************************************
347 * Set media type and TBI compatibility.
349 * hw - Struct containing variables accessed by shared code
350 * **************************************************************************/
352 e1000_set_media_type(struct e1000_hw *hw)
356 DEBUGFUNC("e1000_set_media_type");
358 if(hw->mac_type != e1000_82543) {
359 /* tbi_compatibility is only valid on 82543 */
360 hw->tbi_compatibility_en = FALSE;
363 switch (hw->device_id) {
364 case E1000_DEV_ID_82545GM_SERDES:
365 case E1000_DEV_ID_82546GB_SERDES:
366 case E1000_DEV_ID_82571EB_SERDES:
367 case E1000_DEV_ID_82572EI_SERDES:
368 hw->media_type = e1000_media_type_internal_serdes;
371 switch (hw->mac_type) {
372 case e1000_82542_rev2_0:
373 case e1000_82542_rev2_1:
374 hw->media_type = e1000_media_type_fiber;
377 /* The STATUS_TBIMODE bit is reserved or reused for the this
380 hw->media_type = e1000_media_type_copper;
383 status = E1000_READ_REG(hw, STATUS);
384 if (status & E1000_STATUS_TBIMODE) {
385 hw->media_type = e1000_media_type_fiber;
386 /* tbi_compatibility not valid on fiber */
387 hw->tbi_compatibility_en = FALSE;
389 hw->media_type = e1000_media_type_copper;
396 /******************************************************************************
397 * Reset the transmit and receive units; mask and clear all interrupts.
399 * hw - Struct containing variables accessed by shared code
400 *****************************************************************************/
402 e1000_reset_hw(struct e1000_hw *hw)
410 uint32_t extcnf_ctrl;
413 DEBUGFUNC("e1000_reset_hw");
415 /* For 82542 (rev 2.0), disable MWI before issuing a device reset */
416 if(hw->mac_type == e1000_82542_rev2_0) {
417 DEBUGOUT("Disabling MWI on 82542 rev 2.0\n");
418 e1000_pci_clear_mwi(hw);
421 if(hw->bus_type == e1000_bus_type_pci_express) {
422 /* Prevent the PCI-E bus from sticking if there is no TLP connection
423 * on the last TLP read/write transaction when MAC is reset.
425 if(e1000_disable_pciex_master(hw) != E1000_SUCCESS) {
426 DEBUGOUT("PCI-E Master disable polling has failed.\n");
430 /* Clear interrupt mask to stop board from generating interrupts */
431 DEBUGOUT("Masking off all interrupts\n");
432 E1000_WRITE_REG(hw, IMC, 0xffffffff);
434 /* Disable the Transmit and Receive units. Then delay to allow
435 * any pending transactions to complete before we hit the MAC with
438 E1000_WRITE_REG(hw, RCTL, 0);
439 E1000_WRITE_REG(hw, TCTL, E1000_TCTL_PSP);
440 E1000_WRITE_FLUSH(hw);
442 /* The tbi_compatibility_on Flag must be cleared when Rctl is cleared. */
443 hw->tbi_compatibility_on = FALSE;
445 /* Delay to allow any outstanding PCI transactions to complete before
446 * resetting the device
450 ctrl = E1000_READ_REG(hw, CTRL);
452 /* Must reset the PHY before resetting the MAC */
453 if((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_82547)) {
454 E1000_WRITE_REG(hw, CTRL, (ctrl | E1000_CTRL_PHY_RST));
458 /* Must acquire the MDIO ownership before MAC reset.
459 * Ownership defaults to firmware after a reset. */
460 if(hw->mac_type == e1000_82573) {
463 extcnf_ctrl = E1000_READ_REG(hw, EXTCNF_CTRL);
464 extcnf_ctrl |= E1000_EXTCNF_CTRL_MDIO_SW_OWNERSHIP;
467 E1000_WRITE_REG(hw, EXTCNF_CTRL, extcnf_ctrl);
468 extcnf_ctrl = E1000_READ_REG(hw, EXTCNF_CTRL);
470 if(extcnf_ctrl & E1000_EXTCNF_CTRL_MDIO_SW_OWNERSHIP)
473 extcnf_ctrl |= E1000_EXTCNF_CTRL_MDIO_SW_OWNERSHIP;
480 /* Issue a global reset to the MAC. This will reset the chip's
481 * transmit, receive, DMA, and link units. It will not effect
482 * the current PCI configuration. The global reset bit is self-
483 * clearing, and should clear within a microsecond.
485 DEBUGOUT("Issuing a global reset to MAC\n");
487 switch(hw->mac_type) {
493 case e1000_82541_rev_2:
494 /* These controllers can't ack the 64-bit write when issuing the
495 * reset, so use IO-mapping as a workaround to issue the reset */
496 E1000_WRITE_REG_IO(hw, CTRL, (ctrl | E1000_CTRL_RST));
498 case e1000_82545_rev_3:
499 case e1000_82546_rev_3:
500 /* Reset is performed on a shadow of the control register */
501 E1000_WRITE_REG(hw, CTRL_DUP, (ctrl | E1000_CTRL_RST));
504 E1000_WRITE_REG(hw, CTRL, (ctrl | E1000_CTRL_RST));
508 /* After MAC reset, force reload of EEPROM to restore power-on settings to
509 * device. Later controllers reload the EEPROM automatically, so just wait
510 * for reload to complete.
512 switch(hw->mac_type) {
513 case e1000_82542_rev2_0:
514 case e1000_82542_rev2_1:
517 /* Wait for reset to complete */
519 ctrl_ext = E1000_READ_REG(hw, CTRL_EXT);
520 ctrl_ext |= E1000_CTRL_EXT_EE_RST;
521 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
522 E1000_WRITE_FLUSH(hw);
523 /* Wait for EEPROM reload */
527 case e1000_82541_rev_2:
529 case e1000_82547_rev_2:
530 /* Wait for EEPROM reload */
535 ctrl_ext = E1000_READ_REG(hw, CTRL_EXT);
536 ctrl_ext |= E1000_CTRL_EXT_EE_RST;
537 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
538 E1000_WRITE_FLUSH(hw);
542 ret_val = e1000_get_auto_rd_done(hw);
544 /* We don't want to continue accessing MAC registers. */
548 /* Wait for EEPROM reload (it happens automatically) */
553 /* Disable HW ARPs on ASF enabled adapters */
554 if(hw->mac_type >= e1000_82540 && hw->mac_type <= e1000_82547_rev_2) {
555 manc = E1000_READ_REG(hw, MANC);
556 manc &= ~(E1000_MANC_ARP_EN);
557 E1000_WRITE_REG(hw, MANC, manc);
560 if((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_82547)) {
561 e1000_phy_init_script(hw);
563 /* Configure activity LED after PHY reset */
564 led_ctrl = E1000_READ_REG(hw, LEDCTL);
565 led_ctrl &= IGP_ACTIVITY_LED_MASK;
566 led_ctrl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE);
567 E1000_WRITE_REG(hw, LEDCTL, led_ctrl);
570 /* Clear interrupt mask to stop board from generating interrupts */
571 DEBUGOUT("Masking off all interrupts\n");
572 E1000_WRITE_REG(hw, IMC, 0xffffffff);
574 /* Clear any pending interrupt events. */
575 icr = E1000_READ_REG(hw, ICR);
577 /* If MWI was previously enabled, reenable it. */
578 if(hw->mac_type == e1000_82542_rev2_0) {
579 if(hw->pci_cmd_word & CMD_MEM_WRT_INVALIDATE)
580 e1000_pci_set_mwi(hw);
583 return E1000_SUCCESS;
586 /******************************************************************************
587 * Performs basic configuration of the adapter.
589 * hw - Struct containing variables accessed by shared code
591 * Assumes that the controller has previously been reset and is in a
592 * post-reset uninitialized state. Initializes the receive address registers,
593 * multicast table, and VLAN filter table. Calls routines to setup link
594 * configuration and flow control settings. Clears all on-chip counters. Leaves
595 * the transmit and receive units disabled and uninitialized.
596 *****************************************************************************/
598 e1000_init_hw(struct e1000_hw *hw)
603 uint16_t pcix_cmd_word;
604 uint16_t pcix_stat_hi_word;
609 DEBUGFUNC("e1000_init_hw");
611 /* Initialize Identification LED */
612 ret_val = e1000_id_led_init(hw);
614 DEBUGOUT("Error Initializing Identification LED\n");
618 /* Set the media type and TBI compatibility */
619 e1000_set_media_type(hw);
621 /* Disabling VLAN filtering. */
622 DEBUGOUT("Initializing the IEEE VLAN\n");
623 if (hw->mac_type < e1000_82545_rev_3)
624 E1000_WRITE_REG(hw, VET, 0);
625 e1000_clear_vfta(hw);
627 /* For 82542 (rev 2.0), disable MWI and put the receiver into reset */
628 if(hw->mac_type == e1000_82542_rev2_0) {
629 DEBUGOUT("Disabling MWI on 82542 rev 2.0\n");
630 e1000_pci_clear_mwi(hw);
631 E1000_WRITE_REG(hw, RCTL, E1000_RCTL_RST);
632 E1000_WRITE_FLUSH(hw);
636 /* Setup the receive address. This involves initializing all of the Receive
637 * Address Registers (RARs 0 - 15).
639 e1000_init_rx_addrs(hw);
641 /* For 82542 (rev 2.0), take the receiver out of reset and enable MWI */
642 if(hw->mac_type == e1000_82542_rev2_0) {
643 E1000_WRITE_REG(hw, RCTL, 0);
644 E1000_WRITE_FLUSH(hw);
646 if(hw->pci_cmd_word & CMD_MEM_WRT_INVALIDATE)
647 e1000_pci_set_mwi(hw);
650 /* Zero out the Multicast HASH table */
651 DEBUGOUT("Zeroing the MTA\n");
652 mta_size = E1000_MC_TBL_SIZE;
653 for(i = 0; i < mta_size; i++)
654 E1000_WRITE_REG_ARRAY(hw, MTA, i, 0);
656 /* Set the PCI priority bit correctly in the CTRL register. This
657 * determines if the adapter gives priority to receives, or if it
658 * gives equal priority to transmits and receives. Valid only on
659 * 82542 and 82543 silicon.
661 if(hw->dma_fairness && hw->mac_type <= e1000_82543) {
662 ctrl = E1000_READ_REG(hw, CTRL);
663 E1000_WRITE_REG(hw, CTRL, ctrl | E1000_CTRL_PRIOR);
666 switch(hw->mac_type) {
667 case e1000_82545_rev_3:
668 case e1000_82546_rev_3:
671 /* Workaround for PCI-X problem when BIOS sets MMRBC incorrectly. */
672 if(hw->bus_type == e1000_bus_type_pcix) {
673 e1000_read_pci_cfg(hw, PCIX_COMMAND_REGISTER, &pcix_cmd_word);
674 e1000_read_pci_cfg(hw, PCIX_STATUS_REGISTER_HI,
676 cmd_mmrbc = (pcix_cmd_word & PCIX_COMMAND_MMRBC_MASK) >>
677 PCIX_COMMAND_MMRBC_SHIFT;
678 stat_mmrbc = (pcix_stat_hi_word & PCIX_STATUS_HI_MMRBC_MASK) >>
679 PCIX_STATUS_HI_MMRBC_SHIFT;
680 if(stat_mmrbc == PCIX_STATUS_HI_MMRBC_4K)
681 stat_mmrbc = PCIX_STATUS_HI_MMRBC_2K;
682 if(cmd_mmrbc > stat_mmrbc) {
683 pcix_cmd_word &= ~PCIX_COMMAND_MMRBC_MASK;
684 pcix_cmd_word |= stat_mmrbc << PCIX_COMMAND_MMRBC_SHIFT;
685 e1000_write_pci_cfg(hw, PCIX_COMMAND_REGISTER,
692 /* Call a subroutine to configure the link and setup flow control. */
693 ret_val = e1000_setup_link(hw);
695 /* Set the transmit descriptor write-back policy */
696 if(hw->mac_type > e1000_82544) {
697 ctrl = E1000_READ_REG(hw, TXDCTL);
698 ctrl = (ctrl & ~E1000_TXDCTL_WTHRESH) | E1000_TXDCTL_FULL_TX_DESC_WB;
699 switch (hw->mac_type) {
706 ctrl |= E1000_TXDCTL_COUNT_DESC;
709 E1000_WRITE_REG(hw, TXDCTL, ctrl);
712 if (hw->mac_type == e1000_82573) {
713 e1000_enable_tx_pkt_filtering(hw);
716 switch (hw->mac_type) {
721 ctrl = E1000_READ_REG(hw, TXDCTL1);
722 ctrl &= ~E1000_TXDCTL_WTHRESH;
723 ctrl |= E1000_TXDCTL_COUNT_DESC | E1000_TXDCTL_FULL_TX_DESC_WB;
725 E1000_WRITE_REG(hw, TXDCTL1, ctrl);
731 if (hw->mac_type == e1000_82573) {
732 uint32_t gcr = E1000_READ_REG(hw, GCR);
733 gcr |= E1000_GCR_L1_ACT_WITHOUT_L0S_RX;
734 E1000_WRITE_REG(hw, GCR, gcr);
737 /* Clear all of the statistics registers (clear on read). It is
738 * important that we do this after we have tried to establish link
739 * because the symbol error count will increment wildly if there
742 e1000_clear_hw_cntrs(hw);
747 /******************************************************************************
748 * Adjust SERDES output amplitude based on EEPROM setting.
750 * hw - Struct containing variables accessed by shared code.
751 *****************************************************************************/
753 e1000_adjust_serdes_amplitude(struct e1000_hw *hw)
755 uint16_t eeprom_data;
758 DEBUGFUNC("e1000_adjust_serdes_amplitude");
760 if(hw->media_type != e1000_media_type_internal_serdes)
761 return E1000_SUCCESS;
763 switch(hw->mac_type) {
764 case e1000_82545_rev_3:
765 case e1000_82546_rev_3:
768 return E1000_SUCCESS;
771 ret_val = e1000_read_eeprom(hw, EEPROM_SERDES_AMPLITUDE, 1, &eeprom_data);
776 if(eeprom_data != EEPROM_RESERVED_WORD) {
777 /* Adjust SERDES output amplitude only. */
778 eeprom_data &= EEPROM_SERDES_AMPLITUDE_MASK;
779 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_EXT_CTRL, eeprom_data);
784 return E1000_SUCCESS;
787 /******************************************************************************
788 * Configures flow control and link settings.
790 * hw - Struct containing variables accessed by shared code
792 * Determines which flow control settings to use. Calls the apropriate media-
793 * specific link configuration function. Configures the flow control settings.
794 * Assuming the adapter has a valid link partner, a valid link should be
795 * established. Assumes the hardware has previously been reset and the
796 * transmitter and receiver are not enabled.
797 *****************************************************************************/
799 e1000_setup_link(struct e1000_hw *hw)
803 uint16_t eeprom_data;
805 DEBUGFUNC("e1000_setup_link");
807 /* Read and store word 0x0F of the EEPROM. This word contains bits
808 * that determine the hardware's default PAUSE (flow control) mode,
809 * a bit that determines whether the HW defaults to enabling or
810 * disabling auto-negotiation, and the direction of the
811 * SW defined pins. If there is no SW over-ride of the flow
812 * control setting, then the variable hw->fc will
813 * be initialized based on a value in the EEPROM.
815 if(e1000_read_eeprom(hw, EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data)) {
816 DEBUGOUT("EEPROM Read Error\n");
817 return -E1000_ERR_EEPROM;
820 if(hw->fc == e1000_fc_default) {
821 if((eeprom_data & EEPROM_WORD0F_PAUSE_MASK) == 0)
822 hw->fc = e1000_fc_none;
823 else if((eeprom_data & EEPROM_WORD0F_PAUSE_MASK) ==
824 EEPROM_WORD0F_ASM_DIR)
825 hw->fc = e1000_fc_tx_pause;
827 hw->fc = e1000_fc_full;
830 /* We want to save off the original Flow Control configuration just
831 * in case we get disconnected and then reconnected into a different
832 * hub or switch with different Flow Control capabilities.
834 if(hw->mac_type == e1000_82542_rev2_0)
835 hw->fc &= (~e1000_fc_tx_pause);
837 if((hw->mac_type < e1000_82543) && (hw->report_tx_early == 1))
838 hw->fc &= (~e1000_fc_rx_pause);
840 hw->original_fc = hw->fc;
842 DEBUGOUT1("After fix-ups FlowControl is now = %x\n", hw->fc);
844 /* Take the 4 bits from EEPROM word 0x0F that determine the initial
845 * polarity value for the SW controlled pins, and setup the
846 * Extended Device Control reg with that info.
847 * This is needed because one of the SW controlled pins is used for
848 * signal detection. So this should be done before e1000_setup_pcs_link()
849 * or e1000_phy_setup() is called.
851 if(hw->mac_type == e1000_82543) {
852 ctrl_ext = ((eeprom_data & EEPROM_WORD0F_SWPDIO_EXT) <<
854 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
857 /* Call the necessary subroutine to configure the link. */
858 ret_val = (hw->media_type == e1000_media_type_copper) ?
859 e1000_setup_copper_link(hw) :
860 e1000_setup_fiber_serdes_link(hw);
862 /* Initialize the flow control address, type, and PAUSE timer
863 * registers to their default values. This is done even if flow
864 * control is disabled, because it does not hurt anything to
865 * initialize these registers.
867 DEBUGOUT("Initializing the Flow Control address, type and timer regs\n");
869 E1000_WRITE_REG(hw, FCAL, FLOW_CONTROL_ADDRESS_LOW);
870 E1000_WRITE_REG(hw, FCAH, FLOW_CONTROL_ADDRESS_HIGH);
871 E1000_WRITE_REG(hw, FCT, FLOW_CONTROL_TYPE);
873 E1000_WRITE_REG(hw, FCTTV, hw->fc_pause_time);
875 /* Set the flow control receive threshold registers. Normally,
876 * these registers will be set to a default threshold that may be
877 * adjusted later by the driver's runtime code. However, if the
878 * ability to transmit pause frames in not enabled, then these
879 * registers will be set to 0.
881 if(!(hw->fc & e1000_fc_tx_pause)) {
882 E1000_WRITE_REG(hw, FCRTL, 0);
883 E1000_WRITE_REG(hw, FCRTH, 0);
885 /* We need to set up the Receive Threshold high and low water marks
886 * as well as (optionally) enabling the transmission of XON frames.
888 if(hw->fc_send_xon) {
889 E1000_WRITE_REG(hw, FCRTL, (hw->fc_low_water | E1000_FCRTL_XONE));
890 E1000_WRITE_REG(hw, FCRTH, hw->fc_high_water);
892 E1000_WRITE_REG(hw, FCRTL, hw->fc_low_water);
893 E1000_WRITE_REG(hw, FCRTH, hw->fc_high_water);
899 /******************************************************************************
900 * Sets up link for a fiber based or serdes based adapter
902 * hw - Struct containing variables accessed by shared code
904 * Manipulates Physical Coding Sublayer functions in order to configure
905 * link. Assumes the hardware has been previously reset and the transmitter
906 * and receiver are not enabled.
907 *****************************************************************************/
909 e1000_setup_fiber_serdes_link(struct e1000_hw *hw)
918 DEBUGFUNC("e1000_setup_fiber_serdes_link");
920 /* On 82571 and 82572 Fiber connections, SerDes loopback mode persists
921 * until explicitly turned off or a power cycle is performed. A read to
922 * the register does not indicate its status. Therefore, we ensure
923 * loopback mode is disabled during initialization.
925 if (hw->mac_type == e1000_82571 || hw->mac_type == e1000_82572)
926 E1000_WRITE_REG(hw, SCTL, E1000_DISABLE_SERDES_LOOPBACK);
928 /* On adapters with a MAC newer than 82544, SW Defineable pin 1 will be
929 * set when the optics detect a signal. On older adapters, it will be
930 * cleared when there is a signal. This applies to fiber media only.
931 * If we're on serdes media, adjust the output amplitude to value set in
934 ctrl = E1000_READ_REG(hw, CTRL);
935 if(hw->media_type == e1000_media_type_fiber)
936 signal = (hw->mac_type > e1000_82544) ? E1000_CTRL_SWDPIN1 : 0;
938 ret_val = e1000_adjust_serdes_amplitude(hw);
942 /* Take the link out of reset */
943 ctrl &= ~(E1000_CTRL_LRST);
945 /* Adjust VCO speed to improve BER performance */
946 ret_val = e1000_set_vco_speed(hw);
950 e1000_config_collision_dist(hw);
952 /* Check for a software override of the flow control settings, and setup
953 * the device accordingly. If auto-negotiation is enabled, then software
954 * will have to set the "PAUSE" bits to the correct value in the Tranmsit
955 * Config Word Register (TXCW) and re-start auto-negotiation. However, if
956 * auto-negotiation is disabled, then software will have to manually
957 * configure the two flow control enable bits in the CTRL register.
959 * The possible values of the "fc" parameter are:
960 * 0: Flow control is completely disabled
961 * 1: Rx flow control is enabled (we can receive pause frames, but
962 * not send pause frames).
963 * 2: Tx flow control is enabled (we can send pause frames but we do
964 * not support receiving pause frames).
965 * 3: Both Rx and TX flow control (symmetric) are enabled.
969 /* Flow control is completely disabled by a software over-ride. */
970 txcw = (E1000_TXCW_ANE | E1000_TXCW_FD);
972 case e1000_fc_rx_pause:
973 /* RX Flow control is enabled and TX Flow control is disabled by a
974 * software over-ride. Since there really isn't a way to advertise
975 * that we are capable of RX Pause ONLY, we will advertise that we
976 * support both symmetric and asymmetric RX PAUSE. Later, we will
977 * disable the adapter's ability to send PAUSE frames.
979 txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_PAUSE_MASK);
981 case e1000_fc_tx_pause:
982 /* TX Flow control is enabled, and RX Flow control is disabled, by a
983 * software over-ride.
985 txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_ASM_DIR);
988 /* Flow control (both RX and TX) is enabled by a software over-ride. */
989 txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_PAUSE_MASK);
992 DEBUGOUT("Flow control param set incorrectly\n");
993 return -E1000_ERR_CONFIG;
997 /* Since auto-negotiation is enabled, take the link out of reset (the link
998 * will be in reset, because we previously reset the chip). This will
999 * restart auto-negotiation. If auto-neogtiation is successful then the
1000 * link-up status bit will be set and the flow control enable bits (RFCE
1001 * and TFCE) will be set according to their negotiated value.
1003 DEBUGOUT("Auto-negotiation enabled\n");
1005 E1000_WRITE_REG(hw, TXCW, txcw);
1006 E1000_WRITE_REG(hw, CTRL, ctrl);
1007 E1000_WRITE_FLUSH(hw);
1012 /* If we have a signal (the cable is plugged in) then poll for a "Link-Up"
1013 * indication in the Device Status Register. Time-out if a link isn't
1014 * seen in 500 milliseconds seconds (Auto-negotiation should complete in
1015 * less than 500 milliseconds even if the other end is doing it in SW).
1016 * For internal serdes, we just assume a signal is present, then poll.
1018 if(hw->media_type == e1000_media_type_internal_serdes ||
1019 (E1000_READ_REG(hw, CTRL) & E1000_CTRL_SWDPIN1) == signal) {
1020 DEBUGOUT("Looking for Link\n");
1021 for(i = 0; i < (LINK_UP_TIMEOUT / 10); i++) {
1023 status = E1000_READ_REG(hw, STATUS);
1024 if(status & E1000_STATUS_LU) break;
1026 if(i == (LINK_UP_TIMEOUT / 10)) {
1027 DEBUGOUT("Never got a valid link from auto-neg!!!\n");
1028 hw->autoneg_failed = 1;
1029 /* AutoNeg failed to achieve a link, so we'll call
1030 * e1000_check_for_link. This routine will force the link up if
1031 * we detect a signal. This will allow us to communicate with
1032 * non-autonegotiating link partners.
1034 ret_val = e1000_check_for_link(hw);
1036 DEBUGOUT("Error while checking for link\n");
1039 hw->autoneg_failed = 0;
1041 hw->autoneg_failed = 0;
1042 DEBUGOUT("Valid Link Found\n");
1045 DEBUGOUT("No Signal Detected\n");
1047 return E1000_SUCCESS;
1050 /******************************************************************************
1051 * Make sure we have a valid PHY and change PHY mode before link setup.
1053 * hw - Struct containing variables accessed by shared code
1054 ******************************************************************************/
1056 e1000_copper_link_preconfig(struct e1000_hw *hw)
1062 DEBUGFUNC("e1000_copper_link_preconfig");
1064 ctrl = E1000_READ_REG(hw, CTRL);
1065 /* With 82543, we need to force speed and duplex on the MAC equal to what
1066 * the PHY speed and duplex configuration is. In addition, we need to
1067 * perform a hardware reset on the PHY to take it out of reset.
1069 if(hw->mac_type > e1000_82543) {
1070 ctrl |= E1000_CTRL_SLU;
1071 ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
1072 E1000_WRITE_REG(hw, CTRL, ctrl);
1074 ctrl |= (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX | E1000_CTRL_SLU);
1075 E1000_WRITE_REG(hw, CTRL, ctrl);
1076 ret_val = e1000_phy_hw_reset(hw);
1081 /* Make sure we have a valid PHY */
1082 ret_val = e1000_detect_gig_phy(hw);
1084 DEBUGOUT("Error, did not detect valid phy.\n");
1087 DEBUGOUT1("Phy ID = %x \n", hw->phy_id);
1089 /* Set PHY to class A mode (if necessary) */
1090 ret_val = e1000_set_phy_mode(hw);
1094 if((hw->mac_type == e1000_82545_rev_3) ||
1095 (hw->mac_type == e1000_82546_rev_3)) {
1096 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
1097 phy_data |= 0x00000008;
1098 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data);
1101 if(hw->mac_type <= e1000_82543 ||
1102 hw->mac_type == e1000_82541 || hw->mac_type == e1000_82547 ||
1103 hw->mac_type == e1000_82541_rev_2 || hw->mac_type == e1000_82547_rev_2)
1104 hw->phy_reset_disable = FALSE;
1106 return E1000_SUCCESS;
1110 /********************************************************************
1111 * Copper link setup for e1000_phy_igp series.
1113 * hw - Struct containing variables accessed by shared code
1114 *********************************************************************/
1116 e1000_copper_link_igp_setup(struct e1000_hw *hw)
1122 DEBUGFUNC("e1000_copper_link_igp_setup");
1124 if (hw->phy_reset_disable)
1125 return E1000_SUCCESS;
1127 ret_val = e1000_phy_reset(hw);
1129 DEBUGOUT("Error Resetting the PHY\n");
1133 /* Wait 10ms for MAC to configure PHY from eeprom settings */
1136 /* Configure activity LED after PHY reset */
1137 led_ctrl = E1000_READ_REG(hw, LEDCTL);
1138 led_ctrl &= IGP_ACTIVITY_LED_MASK;
1139 led_ctrl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE);
1140 E1000_WRITE_REG(hw, LEDCTL, led_ctrl);
1142 /* disable lplu d3 during driver init */
1143 ret_val = e1000_set_d3_lplu_state(hw, FALSE);
1145 DEBUGOUT("Error Disabling LPLU D3\n");
1149 /* disable lplu d0 during driver init */
1150 ret_val = e1000_set_d0_lplu_state(hw, FALSE);
1152 DEBUGOUT("Error Disabling LPLU D0\n");
1155 /* Configure mdi-mdix settings */
1156 ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, &phy_data);
1160 if ((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_82547)) {
1161 hw->dsp_config_state = e1000_dsp_config_disabled;
1162 /* Force MDI for earlier revs of the IGP PHY */
1163 phy_data &= ~(IGP01E1000_PSCR_AUTO_MDIX | IGP01E1000_PSCR_FORCE_MDI_MDIX);
1167 hw->dsp_config_state = e1000_dsp_config_enabled;
1168 phy_data &= ~IGP01E1000_PSCR_AUTO_MDIX;
1172 phy_data &= ~IGP01E1000_PSCR_FORCE_MDI_MDIX;
1175 phy_data |= IGP01E1000_PSCR_FORCE_MDI_MDIX;
1179 phy_data |= IGP01E1000_PSCR_AUTO_MDIX;
1183 ret_val = e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, phy_data);
1187 /* set auto-master slave resolution settings */
1189 e1000_ms_type phy_ms_setting = hw->master_slave;
1191 if(hw->ffe_config_state == e1000_ffe_config_active)
1192 hw->ffe_config_state = e1000_ffe_config_enabled;
1194 if(hw->dsp_config_state == e1000_dsp_config_activated)
1195 hw->dsp_config_state = e1000_dsp_config_enabled;
1197 /* when autonegotiation advertisment is only 1000Mbps then we
1198 * should disable SmartSpeed and enable Auto MasterSlave
1199 * resolution as hardware default. */
1200 if(hw->autoneg_advertised == ADVERTISE_1000_FULL) {
1201 /* Disable SmartSpeed */
1202 ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, &phy_data);
1205 phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
1206 ret_val = e1000_write_phy_reg(hw,
1207 IGP01E1000_PHY_PORT_CONFIG,
1211 /* Set auto Master/Slave resolution process */
1212 ret_val = e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_data);
1215 phy_data &= ~CR_1000T_MS_ENABLE;
1216 ret_val = e1000_write_phy_reg(hw, PHY_1000T_CTRL, phy_data);
1221 ret_val = e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_data);
1225 /* load defaults for future use */
1226 hw->original_master_slave = (phy_data & CR_1000T_MS_ENABLE) ?
1227 ((phy_data & CR_1000T_MS_VALUE) ?
1228 e1000_ms_force_master :
1229 e1000_ms_force_slave) :
1232 switch (phy_ms_setting) {
1233 case e1000_ms_force_master:
1234 phy_data |= (CR_1000T_MS_ENABLE | CR_1000T_MS_VALUE);
1236 case e1000_ms_force_slave:
1237 phy_data |= CR_1000T_MS_ENABLE;
1238 phy_data &= ~(CR_1000T_MS_VALUE);
1241 phy_data &= ~CR_1000T_MS_ENABLE;
1245 ret_val = e1000_write_phy_reg(hw, PHY_1000T_CTRL, phy_data);
1250 return E1000_SUCCESS;
1254 /********************************************************************
1255 * Copper link setup for e1000_phy_m88 series.
1257 * hw - Struct containing variables accessed by shared code
1258 *********************************************************************/
1260 e1000_copper_link_mgp_setup(struct e1000_hw *hw)
1265 DEBUGFUNC("e1000_copper_link_mgp_setup");
1267 if(hw->phy_reset_disable)
1268 return E1000_SUCCESS;
1270 /* Enable CRS on TX. This must be set for half-duplex operation. */
1271 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
1275 phy_data |= M88E1000_PSCR_ASSERT_CRS_ON_TX;
1278 * MDI/MDI-X = 0 (default)
1279 * 0 - Auto for all speeds
1282 * 3 - Auto for 1000Base-T only (MDI-X for 10/100Base-T modes)
1284 phy_data &= ~M88E1000_PSCR_AUTO_X_MODE;
1288 phy_data |= M88E1000_PSCR_MDI_MANUAL_MODE;
1291 phy_data |= M88E1000_PSCR_MDIX_MANUAL_MODE;
1294 phy_data |= M88E1000_PSCR_AUTO_X_1000T;
1298 phy_data |= M88E1000_PSCR_AUTO_X_MODE;
1303 * disable_polarity_correction = 0 (default)
1304 * Automatic Correction for Reversed Cable Polarity
1308 phy_data &= ~M88E1000_PSCR_POLARITY_REVERSAL;
1309 if(hw->disable_polarity_correction == 1)
1310 phy_data |= M88E1000_PSCR_POLARITY_REVERSAL;
1311 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data);
1315 /* Force TX_CLK in the Extended PHY Specific Control Register
1318 ret_val = e1000_read_phy_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL, &phy_data);
1322 phy_data |= M88E1000_EPSCR_TX_CLK_25;
1324 if (hw->phy_revision < M88E1011_I_REV_4) {
1325 /* Configure Master and Slave downshift values */
1326 phy_data &= ~(M88E1000_EPSCR_MASTER_DOWNSHIFT_MASK |
1327 M88E1000_EPSCR_SLAVE_DOWNSHIFT_MASK);
1328 phy_data |= (M88E1000_EPSCR_MASTER_DOWNSHIFT_1X |
1329 M88E1000_EPSCR_SLAVE_DOWNSHIFT_1X);
1330 ret_val = e1000_write_phy_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL, phy_data);
1335 /* SW Reset the PHY so all changes take effect */
1336 ret_val = e1000_phy_reset(hw);
1338 DEBUGOUT("Error Resetting the PHY\n");
1342 return E1000_SUCCESS;
1345 /********************************************************************
1346 * Setup auto-negotiation and flow control advertisements,
1347 * and then perform auto-negotiation.
1349 * hw - Struct containing variables accessed by shared code
1350 *********************************************************************/
1352 e1000_copper_link_autoneg(struct e1000_hw *hw)
1357 DEBUGFUNC("e1000_copper_link_autoneg");
1359 /* Perform some bounds checking on the hw->autoneg_advertised
1360 * parameter. If this variable is zero, then set it to the default.
1362 hw->autoneg_advertised &= AUTONEG_ADVERTISE_SPEED_DEFAULT;
1364 /* If autoneg_advertised is zero, we assume it was not defaulted
1365 * by the calling code so we set to advertise full capability.
1367 if(hw->autoneg_advertised == 0)
1368 hw->autoneg_advertised = AUTONEG_ADVERTISE_SPEED_DEFAULT;
1370 DEBUGOUT("Reconfiguring auto-neg advertisement params\n");
1371 ret_val = e1000_phy_setup_autoneg(hw);
1373 DEBUGOUT("Error Setting up Auto-Negotiation\n");
1376 DEBUGOUT("Restarting Auto-Neg\n");
1378 /* Restart auto-negotiation by setting the Auto Neg Enable bit and
1379 * the Auto Neg Restart bit in the PHY control register.
1381 ret_val = e1000_read_phy_reg(hw, PHY_CTRL, &phy_data);
1385 phy_data |= (MII_CR_AUTO_NEG_EN | MII_CR_RESTART_AUTO_NEG);
1386 ret_val = e1000_write_phy_reg(hw, PHY_CTRL, phy_data);
1390 /* Does the user want to wait for Auto-Neg to complete here, or
1391 * check at a later time (for example, callback routine).
1393 if(hw->wait_autoneg_complete) {
1394 ret_val = e1000_wait_autoneg(hw);
1396 DEBUGOUT("Error while waiting for autoneg to complete\n");
1401 hw->get_link_status = TRUE;
1403 return E1000_SUCCESS;
1407 /******************************************************************************
1408 * Config the MAC and the PHY after link is up.
1409 * 1) Set up the MAC to the current PHY speed/duplex
1410 * if we are on 82543. If we
1411 * are on newer silicon, we only need to configure
1412 * collision distance in the Transmit Control Register.
1413 * 2) Set up flow control on the MAC to that established with
1415 * 3) Config DSP to improve Gigabit link quality for some PHY revisions.
1417 * hw - Struct containing variables accessed by shared code
1418 ******************************************************************************/
1420 e1000_copper_link_postconfig(struct e1000_hw *hw)
1423 DEBUGFUNC("e1000_copper_link_postconfig");
1425 if(hw->mac_type >= e1000_82544) {
1426 e1000_config_collision_dist(hw);
1428 ret_val = e1000_config_mac_to_phy(hw);
1430 DEBUGOUT("Error configuring MAC to PHY settings\n");
1434 ret_val = e1000_config_fc_after_link_up(hw);
1436 DEBUGOUT("Error Configuring Flow Control\n");
1440 /* Config DSP to improve Giga link quality */
1441 if(hw->phy_type == e1000_phy_igp) {
1442 ret_val = e1000_config_dsp_after_link_change(hw, TRUE);
1444 DEBUGOUT("Error Configuring DSP after link up\n");
1449 return E1000_SUCCESS;
1452 /******************************************************************************
1453 * Detects which PHY is present and setup the speed and duplex
1455 * hw - Struct containing variables accessed by shared code
1456 ******************************************************************************/
1458 e1000_setup_copper_link(struct e1000_hw *hw)
1464 DEBUGFUNC("e1000_setup_copper_link");
1466 /* Check if it is a valid PHY and set PHY mode if necessary. */
1467 ret_val = e1000_copper_link_preconfig(hw);
1471 if (hw->phy_type == e1000_phy_igp ||
1472 hw->phy_type == e1000_phy_igp_2) {
1473 ret_val = e1000_copper_link_igp_setup(hw);
1476 } else if (hw->phy_type == e1000_phy_m88) {
1477 ret_val = e1000_copper_link_mgp_setup(hw);
1483 /* Setup autoneg and flow control advertisement
1484 * and perform autonegotiation */
1485 ret_val = e1000_copper_link_autoneg(hw);
1489 /* PHY will be set to 10H, 10F, 100H,or 100F
1490 * depending on value from forced_speed_duplex. */
1491 DEBUGOUT("Forcing speed and duplex\n");
1492 ret_val = e1000_phy_force_speed_duplex(hw);
1494 DEBUGOUT("Error Forcing Speed and Duplex\n");
1499 /* Check link status. Wait up to 100 microseconds for link to become
1502 for(i = 0; i < 10; i++) {
1503 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
1506 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
1510 if(phy_data & MII_SR_LINK_STATUS) {
1511 /* Config the MAC and PHY after link is up */
1512 ret_val = e1000_copper_link_postconfig(hw);
1516 DEBUGOUT("Valid link established!!!\n");
1517 return E1000_SUCCESS;
1522 DEBUGOUT("Unable to establish link!!!\n");
1523 return E1000_SUCCESS;
1526 /******************************************************************************
1527 * Configures PHY autoneg and flow control advertisement settings
1529 * hw - Struct containing variables accessed by shared code
1530 ******************************************************************************/
1532 e1000_phy_setup_autoneg(struct e1000_hw *hw)
1535 uint16_t mii_autoneg_adv_reg;
1536 uint16_t mii_1000t_ctrl_reg;
1538 DEBUGFUNC("e1000_phy_setup_autoneg");
1540 /* Read the MII Auto-Neg Advertisement Register (Address 4). */
1541 ret_val = e1000_read_phy_reg(hw, PHY_AUTONEG_ADV, &mii_autoneg_adv_reg);
1545 /* Read the MII 1000Base-T Control Register (Address 9). */
1546 ret_val = e1000_read_phy_reg(hw, PHY_1000T_CTRL, &mii_1000t_ctrl_reg);
1550 /* Need to parse both autoneg_advertised and fc and set up
1551 * the appropriate PHY registers. First we will parse for
1552 * autoneg_advertised software override. Since we can advertise
1553 * a plethora of combinations, we need to check each bit
1557 /* First we clear all the 10/100 mb speed bits in the Auto-Neg
1558 * Advertisement Register (Address 4) and the 1000 mb speed bits in
1559 * the 1000Base-T Control Register (Address 9).
1561 mii_autoneg_adv_reg &= ~REG4_SPEED_MASK;
1562 mii_1000t_ctrl_reg &= ~REG9_SPEED_MASK;
1564 DEBUGOUT1("autoneg_advertised %x\n", hw->autoneg_advertised);
1566 /* Do we want to advertise 10 Mb Half Duplex? */
1567 if(hw->autoneg_advertised & ADVERTISE_10_HALF) {
1568 DEBUGOUT("Advertise 10mb Half duplex\n");
1569 mii_autoneg_adv_reg |= NWAY_AR_10T_HD_CAPS;
1572 /* Do we want to advertise 10 Mb Full Duplex? */
1573 if(hw->autoneg_advertised & ADVERTISE_10_FULL) {
1574 DEBUGOUT("Advertise 10mb Full duplex\n");
1575 mii_autoneg_adv_reg |= NWAY_AR_10T_FD_CAPS;
1578 /* Do we want to advertise 100 Mb Half Duplex? */
1579 if(hw->autoneg_advertised & ADVERTISE_100_HALF) {
1580 DEBUGOUT("Advertise 100mb Half duplex\n");
1581 mii_autoneg_adv_reg |= NWAY_AR_100TX_HD_CAPS;
1584 /* Do we want to advertise 100 Mb Full Duplex? */
1585 if(hw->autoneg_advertised & ADVERTISE_100_FULL) {
1586 DEBUGOUT("Advertise 100mb Full duplex\n");
1587 mii_autoneg_adv_reg |= NWAY_AR_100TX_FD_CAPS;
1590 /* We do not allow the Phy to advertise 1000 Mb Half Duplex */
1591 if(hw->autoneg_advertised & ADVERTISE_1000_HALF) {
1592 DEBUGOUT("Advertise 1000mb Half duplex requested, request denied!\n");
1595 /* Do we want to advertise 1000 Mb Full Duplex? */
1596 if(hw->autoneg_advertised & ADVERTISE_1000_FULL) {
1597 DEBUGOUT("Advertise 1000mb Full duplex\n");
1598 mii_1000t_ctrl_reg |= CR_1000T_FD_CAPS;
1601 /* Check for a software override of the flow control settings, and
1602 * setup the PHY advertisement registers accordingly. If
1603 * auto-negotiation is enabled, then software will have to set the
1604 * "PAUSE" bits to the correct value in the Auto-Negotiation
1605 * Advertisement Register (PHY_AUTONEG_ADV) and re-start auto-negotiation.
1607 * The possible values of the "fc" parameter are:
1608 * 0: Flow control is completely disabled
1609 * 1: Rx flow control is enabled (we can receive pause frames
1610 * but not send pause frames).
1611 * 2: Tx flow control is enabled (we can send pause frames
1612 * but we do not support receiving pause frames).
1613 * 3: Both Rx and TX flow control (symmetric) are enabled.
1614 * other: No software override. The flow control configuration
1615 * in the EEPROM is used.
1618 case e1000_fc_none: /* 0 */
1619 /* Flow control (RX & TX) is completely disabled by a
1620 * software over-ride.
1622 mii_autoneg_adv_reg &= ~(NWAY_AR_ASM_DIR | NWAY_AR_PAUSE);
1624 case e1000_fc_rx_pause: /* 1 */
1625 /* RX Flow control is enabled, and TX Flow control is
1626 * disabled, by a software over-ride.
1628 /* Since there really isn't a way to advertise that we are
1629 * capable of RX Pause ONLY, we will advertise that we
1630 * support both symmetric and asymmetric RX PAUSE. Later
1631 * (in e1000_config_fc_after_link_up) we will disable the
1632 *hw's ability to send PAUSE frames.
1634 mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE);
1636 case e1000_fc_tx_pause: /* 2 */
1637 /* TX Flow control is enabled, and RX Flow control is
1638 * disabled, by a software over-ride.
1640 mii_autoneg_adv_reg |= NWAY_AR_ASM_DIR;
1641 mii_autoneg_adv_reg &= ~NWAY_AR_PAUSE;
1643 case e1000_fc_full: /* 3 */
1644 /* Flow control (both RX and TX) is enabled by a software
1647 mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE);
1650 DEBUGOUT("Flow control param set incorrectly\n");
1651 return -E1000_ERR_CONFIG;
1654 ret_val = e1000_write_phy_reg(hw, PHY_AUTONEG_ADV, mii_autoneg_adv_reg);
1658 DEBUGOUT1("Auto-Neg Advertising %x\n", mii_autoneg_adv_reg);
1660 ret_val = e1000_write_phy_reg(hw, PHY_1000T_CTRL, mii_1000t_ctrl_reg);
1664 return E1000_SUCCESS;
1667 /******************************************************************************
1668 * Force PHY speed and duplex settings to hw->forced_speed_duplex
1670 * hw - Struct containing variables accessed by shared code
1671 ******************************************************************************/
1673 e1000_phy_force_speed_duplex(struct e1000_hw *hw)
1677 uint16_t mii_ctrl_reg;
1678 uint16_t mii_status_reg;
1682 DEBUGFUNC("e1000_phy_force_speed_duplex");
1684 /* Turn off Flow control if we are forcing speed and duplex. */
1685 hw->fc = e1000_fc_none;
1687 DEBUGOUT1("hw->fc = %d\n", hw->fc);
1689 /* Read the Device Control Register. */
1690 ctrl = E1000_READ_REG(hw, CTRL);
1692 /* Set the bits to Force Speed and Duplex in the Device Ctrl Reg. */
1693 ctrl |= (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
1694 ctrl &= ~(DEVICE_SPEED_MASK);
1696 /* Clear the Auto Speed Detect Enable bit. */
1697 ctrl &= ~E1000_CTRL_ASDE;
1699 /* Read the MII Control Register. */
1700 ret_val = e1000_read_phy_reg(hw, PHY_CTRL, &mii_ctrl_reg);
1704 /* We need to disable autoneg in order to force link and duplex. */
1706 mii_ctrl_reg &= ~MII_CR_AUTO_NEG_EN;
1708 /* Are we forcing Full or Half Duplex? */
1709 if(hw->forced_speed_duplex == e1000_100_full ||
1710 hw->forced_speed_duplex == e1000_10_full) {
1711 /* We want to force full duplex so we SET the full duplex bits in the
1712 * Device and MII Control Registers.
1714 ctrl |= E1000_CTRL_FD;
1715 mii_ctrl_reg |= MII_CR_FULL_DUPLEX;
1716 DEBUGOUT("Full Duplex\n");
1718 /* We want to force half duplex so we CLEAR the full duplex bits in
1719 * the Device and MII Control Registers.
1721 ctrl &= ~E1000_CTRL_FD;
1722 mii_ctrl_reg &= ~MII_CR_FULL_DUPLEX;
1723 DEBUGOUT("Half Duplex\n");
1726 /* Are we forcing 100Mbps??? */
1727 if(hw->forced_speed_duplex == e1000_100_full ||
1728 hw->forced_speed_duplex == e1000_100_half) {
1729 /* Set the 100Mb bit and turn off the 1000Mb and 10Mb bits. */
1730 ctrl |= E1000_CTRL_SPD_100;
1731 mii_ctrl_reg |= MII_CR_SPEED_100;
1732 mii_ctrl_reg &= ~(MII_CR_SPEED_1000 | MII_CR_SPEED_10);
1733 DEBUGOUT("Forcing 100mb ");
1735 /* Set the 10Mb bit and turn off the 1000Mb and 100Mb bits. */
1736 ctrl &= ~(E1000_CTRL_SPD_1000 | E1000_CTRL_SPD_100);
1737 mii_ctrl_reg |= MII_CR_SPEED_10;
1738 mii_ctrl_reg &= ~(MII_CR_SPEED_1000 | MII_CR_SPEED_100);
1739 DEBUGOUT("Forcing 10mb ");
1742 e1000_config_collision_dist(hw);
1744 /* Write the configured values back to the Device Control Reg. */
1745 E1000_WRITE_REG(hw, CTRL, ctrl);
1747 if (hw->phy_type == e1000_phy_m88) {
1748 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
1752 /* Clear Auto-Crossover to force MDI manually. M88E1000 requires MDI
1753 * forced whenever speed are duplex are forced.
1755 phy_data &= ~M88E1000_PSCR_AUTO_X_MODE;
1756 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data);
1760 DEBUGOUT1("M88E1000 PSCR: %x \n", phy_data);
1762 /* Need to reset the PHY or these changes will be ignored */
1763 mii_ctrl_reg |= MII_CR_RESET;
1765 /* Clear Auto-Crossover to force MDI manually. IGP requires MDI
1766 * forced whenever speed or duplex are forced.
1768 ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, &phy_data);
1772 phy_data &= ~IGP01E1000_PSCR_AUTO_MDIX;
1773 phy_data &= ~IGP01E1000_PSCR_FORCE_MDI_MDIX;
1775 ret_val = e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, phy_data);
1780 /* Write back the modified PHY MII control register. */
1781 ret_val = e1000_write_phy_reg(hw, PHY_CTRL, mii_ctrl_reg);
1787 /* The wait_autoneg_complete flag may be a little misleading here.
1788 * Since we are forcing speed and duplex, Auto-Neg is not enabled.
1789 * But we do want to delay for a period while forcing only so we
1790 * don't generate false No Link messages. So we will wait here
1791 * only if the user has set wait_autoneg_complete to 1, which is
1794 if(hw->wait_autoneg_complete) {
1795 /* We will wait for autoneg to complete. */
1796 DEBUGOUT("Waiting for forced speed/duplex link.\n");
1799 /* We will wait for autoneg to complete or 4.5 seconds to expire. */
1800 for(i = PHY_FORCE_TIME; i > 0; i--) {
1801 /* Read the MII Status Register and wait for Auto-Neg Complete bit
1804 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
1808 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
1812 if(mii_status_reg & MII_SR_LINK_STATUS) break;
1816 (hw->phy_type == e1000_phy_m88)) {
1817 /* We didn't get link. Reset the DSP and wait again for link. */
1818 ret_val = e1000_phy_reset_dsp(hw);
1820 DEBUGOUT("Error Resetting PHY DSP\n");
1824 /* This loop will early-out if the link condition has been met. */
1825 for(i = PHY_FORCE_TIME; i > 0; i--) {
1826 if(mii_status_reg & MII_SR_LINK_STATUS) break;
1828 /* Read the MII Status Register and wait for Auto-Neg Complete bit
1831 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
1835 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
1841 if (hw->phy_type == e1000_phy_m88) {
1842 /* Because we reset the PHY above, we need to re-force TX_CLK in the
1843 * Extended PHY Specific Control Register to 25MHz clock. This value
1844 * defaults back to a 2.5MHz clock when the PHY is reset.
1846 ret_val = e1000_read_phy_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL, &phy_data);
1850 phy_data |= M88E1000_EPSCR_TX_CLK_25;
1851 ret_val = e1000_write_phy_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL, phy_data);
1855 /* In addition, because of the s/w reset above, we need to enable CRS on
1856 * TX. This must be set for both full and half duplex operation.
1858 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
1862 phy_data |= M88E1000_PSCR_ASSERT_CRS_ON_TX;
1863 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data);
1867 if((hw->mac_type == e1000_82544 || hw->mac_type == e1000_82543) &&
1869 (hw->forced_speed_duplex == e1000_10_full ||
1870 hw->forced_speed_duplex == e1000_10_half)) {
1871 ret_val = e1000_polarity_reversal_workaround(hw);
1876 return E1000_SUCCESS;
1879 /******************************************************************************
1880 * Sets the collision distance in the Transmit Control register
1882 * hw - Struct containing variables accessed by shared code
1884 * Link should have been established previously. Reads the speed and duplex
1885 * information from the Device Status register.
1886 ******************************************************************************/
1888 e1000_config_collision_dist(struct e1000_hw *hw)
1892 DEBUGFUNC("e1000_config_collision_dist");
1894 tctl = E1000_READ_REG(hw, TCTL);
1896 tctl &= ~E1000_TCTL_COLD;
1897 tctl |= E1000_COLLISION_DISTANCE << E1000_COLD_SHIFT;
1899 E1000_WRITE_REG(hw, TCTL, tctl);
1900 E1000_WRITE_FLUSH(hw);
1903 /******************************************************************************
1904 * Sets MAC speed and duplex settings to reflect the those in the PHY
1906 * hw - Struct containing variables accessed by shared code
1907 * mii_reg - data to write to the MII control register
1909 * The contents of the PHY register containing the needed information need to
1911 ******************************************************************************/
1913 e1000_config_mac_to_phy(struct e1000_hw *hw)
1919 DEBUGFUNC("e1000_config_mac_to_phy");
1921 /* 82544 or newer MAC, Auto Speed Detection takes care of
1922 * MAC speed/duplex configuration.*/
1923 if (hw->mac_type >= e1000_82544)
1924 return E1000_SUCCESS;
1926 /* Read the Device Control Register and set the bits to Force Speed
1929 ctrl = E1000_READ_REG(hw, CTRL);
1930 ctrl |= (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
1931 ctrl &= ~(E1000_CTRL_SPD_SEL | E1000_CTRL_ILOS);
1933 /* Set up duplex in the Device Control and Transmit Control
1934 * registers depending on negotiated values.
1936 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS, &phy_data);
1940 if(phy_data & M88E1000_PSSR_DPLX)
1941 ctrl |= E1000_CTRL_FD;
1943 ctrl &= ~E1000_CTRL_FD;
1945 e1000_config_collision_dist(hw);
1947 /* Set up speed in the Device Control register depending on
1948 * negotiated values.
1950 if((phy_data & M88E1000_PSSR_SPEED) == M88E1000_PSSR_1000MBS)
1951 ctrl |= E1000_CTRL_SPD_1000;
1952 else if((phy_data & M88E1000_PSSR_SPEED) == M88E1000_PSSR_100MBS)
1953 ctrl |= E1000_CTRL_SPD_100;
1955 /* Write the configured values back to the Device Control Reg. */
1956 E1000_WRITE_REG(hw, CTRL, ctrl);
1957 return E1000_SUCCESS;
1960 /******************************************************************************
1961 * Forces the MAC's flow control settings.
1963 * hw - Struct containing variables accessed by shared code
1965 * Sets the TFCE and RFCE bits in the device control register to reflect
1966 * the adapter settings. TFCE and RFCE need to be explicitly set by
1967 * software when a Copper PHY is used because autonegotiation is managed
1968 * by the PHY rather than the MAC. Software must also configure these
1969 * bits when link is forced on a fiber connection.
1970 *****************************************************************************/
1972 e1000_force_mac_fc(struct e1000_hw *hw)
1976 DEBUGFUNC("e1000_force_mac_fc");
1978 /* Get the current configuration of the Device Control Register */
1979 ctrl = E1000_READ_REG(hw, CTRL);
1981 /* Because we didn't get link via the internal auto-negotiation
1982 * mechanism (we either forced link or we got link via PHY
1983 * auto-neg), we have to manually enable/disable transmit an
1984 * receive flow control.
1986 * The "Case" statement below enables/disable flow control
1987 * according to the "hw->fc" parameter.
1989 * The possible values of the "fc" parameter are:
1990 * 0: Flow control is completely disabled
1991 * 1: Rx flow control is enabled (we can receive pause
1992 * frames but not send pause frames).
1993 * 2: Tx flow control is enabled (we can send pause frames
1994 * frames but we do not receive pause frames).
1995 * 3: Both Rx and TX flow control (symmetric) is enabled.
1996 * other: No other values should be possible at this point.
2001 ctrl &= (~(E1000_CTRL_TFCE | E1000_CTRL_RFCE));
2003 case e1000_fc_rx_pause:
2004 ctrl &= (~E1000_CTRL_TFCE);
2005 ctrl |= E1000_CTRL_RFCE;
2007 case e1000_fc_tx_pause:
2008 ctrl &= (~E1000_CTRL_RFCE);
2009 ctrl |= E1000_CTRL_TFCE;
2012 ctrl |= (E1000_CTRL_TFCE | E1000_CTRL_RFCE);
2015 DEBUGOUT("Flow control param set incorrectly\n");
2016 return -E1000_ERR_CONFIG;
2019 /* Disable TX Flow Control for 82542 (rev 2.0) */
2020 if(hw->mac_type == e1000_82542_rev2_0)
2021 ctrl &= (~E1000_CTRL_TFCE);
2023 E1000_WRITE_REG(hw, CTRL, ctrl);
2024 return E1000_SUCCESS;
2027 /******************************************************************************
2028 * Configures flow control settings after link is established
2030 * hw - Struct containing variables accessed by shared code
2032 * Should be called immediately after a valid link has been established.
2033 * Forces MAC flow control settings if link was forced. When in MII/GMII mode
2034 * and autonegotiation is enabled, the MAC flow control settings will be set
2035 * based on the flow control negotiated by the PHY. In TBI mode, the TFCE
2036 * and RFCE bits will be automaticaly set to the negotiated flow control mode.
2037 *****************************************************************************/
2039 e1000_config_fc_after_link_up(struct e1000_hw *hw)
2042 uint16_t mii_status_reg;
2043 uint16_t mii_nway_adv_reg;
2044 uint16_t mii_nway_lp_ability_reg;
2048 DEBUGFUNC("e1000_config_fc_after_link_up");
2050 /* Check for the case where we have fiber media and auto-neg failed
2051 * so we had to force link. In this case, we need to force the
2052 * configuration of the MAC to match the "fc" parameter.
2054 if(((hw->media_type == e1000_media_type_fiber) && (hw->autoneg_failed)) ||
2055 ((hw->media_type == e1000_media_type_internal_serdes) && (hw->autoneg_failed)) ||
2056 ((hw->media_type == e1000_media_type_copper) && (!hw->autoneg))) {
2057 ret_val = e1000_force_mac_fc(hw);
2059 DEBUGOUT("Error forcing flow control settings\n");
2064 /* Check for the case where we have copper media and auto-neg is
2065 * enabled. In this case, we need to check and see if Auto-Neg
2066 * has completed, and if so, how the PHY and link partner has
2067 * flow control configured.
2069 if((hw->media_type == e1000_media_type_copper) && hw->autoneg) {
2070 /* Read the MII Status Register and check to see if AutoNeg
2071 * has completed. We read this twice because this reg has
2072 * some "sticky" (latched) bits.
2074 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
2077 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
2081 if(mii_status_reg & MII_SR_AUTONEG_COMPLETE) {
2082 /* The AutoNeg process has completed, so we now need to
2083 * read both the Auto Negotiation Advertisement Register
2084 * (Address 4) and the Auto_Negotiation Base Page Ability
2085 * Register (Address 5) to determine how flow control was
2088 ret_val = e1000_read_phy_reg(hw, PHY_AUTONEG_ADV,
2092 ret_val = e1000_read_phy_reg(hw, PHY_LP_ABILITY,
2093 &mii_nway_lp_ability_reg);
2097 /* Two bits in the Auto Negotiation Advertisement Register
2098 * (Address 4) and two bits in the Auto Negotiation Base
2099 * Page Ability Register (Address 5) determine flow control
2100 * for both the PHY and the link partner. The following
2101 * table, taken out of the IEEE 802.3ab/D6.0 dated March 25,
2102 * 1999, describes these PAUSE resolution bits and how flow
2103 * control is determined based upon these settings.
2104 * NOTE: DC = Don't Care
2106 * LOCAL DEVICE | LINK PARTNER
2107 * PAUSE | ASM_DIR | PAUSE | ASM_DIR | NIC Resolution
2108 *-------|---------|-------|---------|--------------------
2109 * 0 | 0 | DC | DC | e1000_fc_none
2110 * 0 | 1 | 0 | DC | e1000_fc_none
2111 * 0 | 1 | 1 | 0 | e1000_fc_none
2112 * 0 | 1 | 1 | 1 | e1000_fc_tx_pause
2113 * 1 | 0 | 0 | DC | e1000_fc_none
2114 * 1 | DC | 1 | DC | e1000_fc_full
2115 * 1 | 1 | 0 | 0 | e1000_fc_none
2116 * 1 | 1 | 0 | 1 | e1000_fc_rx_pause
2119 /* Are both PAUSE bits set to 1? If so, this implies
2120 * Symmetric Flow Control is enabled at both ends. The
2121 * ASM_DIR bits are irrelevant per the spec.
2123 * For Symmetric Flow Control:
2125 * LOCAL DEVICE | LINK PARTNER
2126 * PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result
2127 *-------|---------|-------|---------|--------------------
2128 * 1 | DC | 1 | DC | e1000_fc_full
2131 if((mii_nway_adv_reg & NWAY_AR_PAUSE) &&
2132 (mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE)) {
2133 /* Now we need to check if the user selected RX ONLY
2134 * of pause frames. In this case, we had to advertise
2135 * FULL flow control because we could not advertise RX
2136 * ONLY. Hence, we must now check to see if we need to
2137 * turn OFF the TRANSMISSION of PAUSE frames.
2139 if(hw->original_fc == e1000_fc_full) {
2140 hw->fc = e1000_fc_full;
2141 DEBUGOUT("Flow Control = FULL.\r\n");
2143 hw->fc = e1000_fc_rx_pause;
2144 DEBUGOUT("Flow Control = RX PAUSE frames only.\r\n");
2147 /* For receiving PAUSE frames ONLY.
2149 * LOCAL DEVICE | LINK PARTNER
2150 * PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result
2151 *-------|---------|-------|---------|--------------------
2152 * 0 | 1 | 1 | 1 | e1000_fc_tx_pause
2155 else if(!(mii_nway_adv_reg & NWAY_AR_PAUSE) &&
2156 (mii_nway_adv_reg & NWAY_AR_ASM_DIR) &&
2157 (mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE) &&
2158 (mii_nway_lp_ability_reg & NWAY_LPAR_ASM_DIR)) {
2159 hw->fc = e1000_fc_tx_pause;
2160 DEBUGOUT("Flow Control = TX PAUSE frames only.\r\n");
2162 /* For transmitting PAUSE frames ONLY.
2164 * LOCAL DEVICE | LINK PARTNER
2165 * PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result
2166 *-------|---------|-------|---------|--------------------
2167 * 1 | 1 | 0 | 1 | e1000_fc_rx_pause
2170 else if((mii_nway_adv_reg & NWAY_AR_PAUSE) &&
2171 (mii_nway_adv_reg & NWAY_AR_ASM_DIR) &&
2172 !(mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE) &&
2173 (mii_nway_lp_ability_reg & NWAY_LPAR_ASM_DIR)) {
2174 hw->fc = e1000_fc_rx_pause;
2175 DEBUGOUT("Flow Control = RX PAUSE frames only.\r\n");
2177 /* Per the IEEE spec, at this point flow control should be
2178 * disabled. However, we want to consider that we could
2179 * be connected to a legacy switch that doesn't advertise
2180 * desired flow control, but can be forced on the link
2181 * partner. So if we advertised no flow control, that is
2182 * what we will resolve to. If we advertised some kind of
2183 * receive capability (Rx Pause Only or Full Flow Control)
2184 * and the link partner advertised none, we will configure
2185 * ourselves to enable Rx Flow Control only. We can do
2186 * this safely for two reasons: If the link partner really
2187 * didn't want flow control enabled, and we enable Rx, no
2188 * harm done since we won't be receiving any PAUSE frames
2189 * anyway. If the intent on the link partner was to have
2190 * flow control enabled, then by us enabling RX only, we
2191 * can at least receive pause frames and process them.
2192 * This is a good idea because in most cases, since we are
2193 * predominantly a server NIC, more times than not we will
2194 * be asked to delay transmission of packets than asking
2195 * our link partner to pause transmission of frames.
2197 else if((hw->original_fc == e1000_fc_none ||
2198 hw->original_fc == e1000_fc_tx_pause) ||
2199 hw->fc_strict_ieee) {
2200 hw->fc = e1000_fc_none;
2201 DEBUGOUT("Flow Control = NONE.\r\n");
2203 hw->fc = e1000_fc_rx_pause;
2204 DEBUGOUT("Flow Control = RX PAUSE frames only.\r\n");
2207 /* Now we need to do one last check... If we auto-
2208 * negotiated to HALF DUPLEX, flow control should not be
2209 * enabled per IEEE 802.3 spec.
2211 ret_val = e1000_get_speed_and_duplex(hw, &speed, &duplex);
2213 DEBUGOUT("Error getting link speed and duplex\n");
2217 if(duplex == HALF_DUPLEX)
2218 hw->fc = e1000_fc_none;
2220 /* Now we call a subroutine to actually force the MAC
2221 * controller to use the correct flow control settings.
2223 ret_val = e1000_force_mac_fc(hw);
2225 DEBUGOUT("Error forcing flow control settings\n");
2229 DEBUGOUT("Copper PHY and Auto Neg has not completed.\r\n");
2232 return E1000_SUCCESS;
2235 /******************************************************************************
2236 * Checks to see if the link status of the hardware has changed.
2238 * hw - Struct containing variables accessed by shared code
2240 * Called by any function that needs to check the link status of the adapter.
2241 *****************************************************************************/
2243 e1000_check_for_link(struct e1000_hw *hw)
2250 uint32_t signal = 0;
2254 DEBUGFUNC("e1000_check_for_link");
2256 ctrl = E1000_READ_REG(hw, CTRL);
2257 status = E1000_READ_REG(hw, STATUS);
2259 /* On adapters with a MAC newer than 82544, SW Defineable pin 1 will be
2260 * set when the optics detect a signal. On older adapters, it will be
2261 * cleared when there is a signal. This applies to fiber media only.
2263 if((hw->media_type == e1000_media_type_fiber) ||
2264 (hw->media_type == e1000_media_type_internal_serdes)) {
2265 rxcw = E1000_READ_REG(hw, RXCW);
2267 if(hw->media_type == e1000_media_type_fiber) {
2268 signal = (hw->mac_type > e1000_82544) ? E1000_CTRL_SWDPIN1 : 0;
2269 if(status & E1000_STATUS_LU)
2270 hw->get_link_status = FALSE;
2274 /* If we have a copper PHY then we only want to go out to the PHY
2275 * registers to see if Auto-Neg has completed and/or if our link
2276 * status has changed. The get_link_status flag will be set if we
2277 * receive a Link Status Change interrupt or we have Rx Sequence
2280 if((hw->media_type == e1000_media_type_copper) && hw->get_link_status) {
2281 /* First we want to see if the MII Status Register reports
2282 * link. If so, then we want to get the current speed/duplex
2284 * Read the register twice since the link bit is sticky.
2286 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
2289 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
2293 if(phy_data & MII_SR_LINK_STATUS) {
2294 hw->get_link_status = FALSE;
2295 /* Check if there was DownShift, must be checked immediately after
2297 e1000_check_downshift(hw);
2299 /* If we are on 82544 or 82543 silicon and speed/duplex
2300 * are forced to 10H or 10F, then we will implement the polarity
2301 * reversal workaround. We disable interrupts first, and upon
2302 * returning, place the devices interrupt state to its previous
2303 * value except for the link status change interrupt which will
2304 * happen due to the execution of this workaround.
2307 if((hw->mac_type == e1000_82544 || hw->mac_type == e1000_82543) &&
2309 (hw->forced_speed_duplex == e1000_10_full ||
2310 hw->forced_speed_duplex == e1000_10_half)) {
2311 E1000_WRITE_REG(hw, IMC, 0xffffffff);
2312 ret_val = e1000_polarity_reversal_workaround(hw);
2313 icr = E1000_READ_REG(hw, ICR);
2314 E1000_WRITE_REG(hw, ICS, (icr & ~E1000_ICS_LSC));
2315 E1000_WRITE_REG(hw, IMS, IMS_ENABLE_MASK);
2319 /* No link detected */
2320 e1000_config_dsp_after_link_change(hw, FALSE);
2324 /* If we are forcing speed/duplex, then we simply return since
2325 * we have already determined whether we have link or not.
2327 if(!hw->autoneg) return -E1000_ERR_CONFIG;
2329 /* optimize the dsp settings for the igp phy */
2330 e1000_config_dsp_after_link_change(hw, TRUE);
2332 /* We have a M88E1000 PHY and Auto-Neg is enabled. If we
2333 * have Si on board that is 82544 or newer, Auto
2334 * Speed Detection takes care of MAC speed/duplex
2335 * configuration. So we only need to configure Collision
2336 * Distance in the MAC. Otherwise, we need to force
2337 * speed/duplex on the MAC to the current PHY speed/duplex
2340 if(hw->mac_type >= e1000_82544)
2341 e1000_config_collision_dist(hw);
2343 ret_val = e1000_config_mac_to_phy(hw);
2345 DEBUGOUT("Error configuring MAC to PHY settings\n");
2350 /* Configure Flow Control now that Auto-Neg has completed. First, we
2351 * need to restore the desired flow control settings because we may
2352 * have had to re-autoneg with a different link partner.
2354 ret_val = e1000_config_fc_after_link_up(hw);
2356 DEBUGOUT("Error configuring flow control\n");
2360 /* At this point we know that we are on copper and we have
2361 * auto-negotiated link. These are conditions for checking the link
2362 * partner capability register. We use the link speed to determine if
2363 * TBI compatibility needs to be turned on or off. If the link is not
2364 * at gigabit speed, then TBI compatibility is not needed. If we are
2365 * at gigabit speed, we turn on TBI compatibility.
2367 if(hw->tbi_compatibility_en) {
2368 uint16_t speed, duplex;
2369 e1000_get_speed_and_duplex(hw, &speed, &duplex);
2370 if(speed != SPEED_1000) {
2371 /* If link speed is not set to gigabit speed, we do not need
2372 * to enable TBI compatibility.
2374 if(hw->tbi_compatibility_on) {
2375 /* If we previously were in the mode, turn it off. */
2376 rctl = E1000_READ_REG(hw, RCTL);
2377 rctl &= ~E1000_RCTL_SBP;
2378 E1000_WRITE_REG(hw, RCTL, rctl);
2379 hw->tbi_compatibility_on = FALSE;
2382 /* If TBI compatibility is was previously off, turn it on. For
2383 * compatibility with a TBI link partner, we will store bad
2384 * packets. Some frames have an additional byte on the end and
2385 * will look like CRC errors to to the hardware.
2387 if(!hw->tbi_compatibility_on) {
2388 hw->tbi_compatibility_on = TRUE;
2389 rctl = E1000_READ_REG(hw, RCTL);
2390 rctl |= E1000_RCTL_SBP;
2391 E1000_WRITE_REG(hw, RCTL, rctl);
2396 /* If we don't have link (auto-negotiation failed or link partner cannot
2397 * auto-negotiate), the cable is plugged in (we have signal), and our
2398 * link partner is not trying to auto-negotiate with us (we are receiving
2399 * idles or data), we need to force link up. We also need to give
2400 * auto-negotiation time to complete, in case the cable was just plugged
2401 * in. The autoneg_failed flag does this.
2403 else if((((hw->media_type == e1000_media_type_fiber) &&
2404 ((ctrl & E1000_CTRL_SWDPIN1) == signal)) ||
2405 (hw->media_type == e1000_media_type_internal_serdes)) &&
2406 (!(status & E1000_STATUS_LU)) &&
2407 (!(rxcw & E1000_RXCW_C))) {
2408 if(hw->autoneg_failed == 0) {
2409 hw->autoneg_failed = 1;
2412 DEBUGOUT("NOT RXing /C/, disable AutoNeg and force link.\r\n");
2414 /* Disable auto-negotiation in the TXCW register */
2415 E1000_WRITE_REG(hw, TXCW, (hw->txcw & ~E1000_TXCW_ANE));
2417 /* Force link-up and also force full-duplex. */
2418 ctrl = E1000_READ_REG(hw, CTRL);
2419 ctrl |= (E1000_CTRL_SLU | E1000_CTRL_FD);
2420 E1000_WRITE_REG(hw, CTRL, ctrl);
2422 /* Configure Flow Control after forcing link up. */
2423 ret_val = e1000_config_fc_after_link_up(hw);
2425 DEBUGOUT("Error configuring flow control\n");
2429 /* If we are forcing link and we are receiving /C/ ordered sets, re-enable
2430 * auto-negotiation in the TXCW register and disable forced link in the
2431 * Device Control register in an attempt to auto-negotiate with our link
2434 else if(((hw->media_type == e1000_media_type_fiber) ||
2435 (hw->media_type == e1000_media_type_internal_serdes)) &&
2436 (ctrl & E1000_CTRL_SLU) && (rxcw & E1000_RXCW_C)) {
2437 DEBUGOUT("RXing /C/, enable AutoNeg and stop forcing link.\r\n");
2438 E1000_WRITE_REG(hw, TXCW, hw->txcw);
2439 E1000_WRITE_REG(hw, CTRL, (ctrl & ~E1000_CTRL_SLU));
2441 hw->serdes_link_down = FALSE;
2443 /* If we force link for non-auto-negotiation switch, check link status
2444 * based on MAC synchronization for internal serdes media type.
2446 else if((hw->media_type == e1000_media_type_internal_serdes) &&
2447 !(E1000_TXCW_ANE & E1000_READ_REG(hw, TXCW))) {
2448 /* SYNCH bit and IV bit are sticky. */
2450 if(E1000_RXCW_SYNCH & E1000_READ_REG(hw, RXCW)) {
2451 if(!(rxcw & E1000_RXCW_IV)) {
2452 hw->serdes_link_down = FALSE;
2453 DEBUGOUT("SERDES: Link is up.\n");
2456 hw->serdes_link_down = TRUE;
2457 DEBUGOUT("SERDES: Link is down.\n");
2460 if((hw->media_type == e1000_media_type_internal_serdes) &&
2461 (E1000_TXCW_ANE & E1000_READ_REG(hw, TXCW))) {
2462 hw->serdes_link_down = !(E1000_STATUS_LU & E1000_READ_REG(hw, STATUS));
2464 return E1000_SUCCESS;
2467 /******************************************************************************
2468 * Detects the current speed and duplex settings of the hardware.
2470 * hw - Struct containing variables accessed by shared code
2471 * speed - Speed of the connection
2472 * duplex - Duplex setting of the connection
2473 *****************************************************************************/
2475 e1000_get_speed_and_duplex(struct e1000_hw *hw,
2483 DEBUGFUNC("e1000_get_speed_and_duplex");
2485 if(hw->mac_type >= e1000_82543) {
2486 status = E1000_READ_REG(hw, STATUS);
2487 if(status & E1000_STATUS_SPEED_1000) {
2488 *speed = SPEED_1000;
2489 DEBUGOUT("1000 Mbs, ");
2490 } else if(status & E1000_STATUS_SPEED_100) {
2492 DEBUGOUT("100 Mbs, ");
2495 DEBUGOUT("10 Mbs, ");
2498 if(status & E1000_STATUS_FD) {
2499 *duplex = FULL_DUPLEX;
2500 DEBUGOUT("Full Duplex\r\n");
2502 *duplex = HALF_DUPLEX;
2503 DEBUGOUT(" Half Duplex\r\n");
2506 DEBUGOUT("1000 Mbs, Full Duplex\r\n");
2507 *speed = SPEED_1000;
2508 *duplex = FULL_DUPLEX;
2511 /* IGP01 PHY may advertise full duplex operation after speed downgrade even
2512 * if it is operating at half duplex. Here we set the duplex settings to
2513 * match the duplex in the link partner's capabilities.
2515 if(hw->phy_type == e1000_phy_igp && hw->speed_downgraded) {
2516 ret_val = e1000_read_phy_reg(hw, PHY_AUTONEG_EXP, &phy_data);
2520 if(!(phy_data & NWAY_ER_LP_NWAY_CAPS))
2521 *duplex = HALF_DUPLEX;
2523 ret_val = e1000_read_phy_reg(hw, PHY_LP_ABILITY, &phy_data);
2526 if((*speed == SPEED_100 && !(phy_data & NWAY_LPAR_100TX_FD_CAPS)) ||
2527 (*speed == SPEED_10 && !(phy_data & NWAY_LPAR_10T_FD_CAPS)))
2528 *duplex = HALF_DUPLEX;
2532 return E1000_SUCCESS;
2535 /******************************************************************************
2536 * Blocks until autoneg completes or times out (~4.5 seconds)
2538 * hw - Struct containing variables accessed by shared code
2539 ******************************************************************************/
2541 e1000_wait_autoneg(struct e1000_hw *hw)
2547 DEBUGFUNC("e1000_wait_autoneg");
2548 DEBUGOUT("Waiting for Auto-Neg to complete.\n");
2550 /* We will wait for autoneg to complete or 4.5 seconds to expire. */
2551 for(i = PHY_AUTO_NEG_TIME; i > 0; i--) {
2552 /* Read the MII Status Register and wait for Auto-Neg
2553 * Complete bit to be set.
2555 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
2558 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
2561 if(phy_data & MII_SR_AUTONEG_COMPLETE) {
2562 return E1000_SUCCESS;
2566 return E1000_SUCCESS;
2569 /******************************************************************************
2570 * Raises the Management Data Clock
2572 * hw - Struct containing variables accessed by shared code
2573 * ctrl - Device control register's current value
2574 ******************************************************************************/
2576 e1000_raise_mdi_clk(struct e1000_hw *hw,
2579 /* Raise the clock input to the Management Data Clock (by setting the MDC
2580 * bit), and then delay 10 microseconds.
2582 E1000_WRITE_REG(hw, CTRL, (*ctrl | E1000_CTRL_MDC));
2583 E1000_WRITE_FLUSH(hw);
2587 /******************************************************************************
2588 * Lowers the Management Data Clock
2590 * hw - Struct containing variables accessed by shared code
2591 * ctrl - Device control register's current value
2592 ******************************************************************************/
2594 e1000_lower_mdi_clk(struct e1000_hw *hw,
2597 /* Lower the clock input to the Management Data Clock (by clearing the MDC
2598 * bit), and then delay 10 microseconds.
2600 E1000_WRITE_REG(hw, CTRL, (*ctrl & ~E1000_CTRL_MDC));
2601 E1000_WRITE_FLUSH(hw);
2605 /******************************************************************************
2606 * Shifts data bits out to the PHY
2608 * hw - Struct containing variables accessed by shared code
2609 * data - Data to send out to the PHY
2610 * count - Number of bits to shift out
2612 * Bits are shifted out in MSB to LSB order.
2613 ******************************************************************************/
2615 e1000_shift_out_mdi_bits(struct e1000_hw *hw,
2622 /* We need to shift "count" number of bits out to the PHY. So, the value
2623 * in the "data" parameter will be shifted out to the PHY one bit at a
2624 * time. In order to do this, "data" must be broken down into bits.
2627 mask <<= (count - 1);
2629 ctrl = E1000_READ_REG(hw, CTRL);
2631 /* Set MDIO_DIR and MDC_DIR direction bits to be used as output pins. */
2632 ctrl |= (E1000_CTRL_MDIO_DIR | E1000_CTRL_MDC_DIR);
2635 /* A "1" is shifted out to the PHY by setting the MDIO bit to "1" and
2636 * then raising and lowering the Management Data Clock. A "0" is
2637 * shifted out to the PHY by setting the MDIO bit to "0" and then
2638 * raising and lowering the clock.
2640 if(data & mask) ctrl |= E1000_CTRL_MDIO;
2641 else ctrl &= ~E1000_CTRL_MDIO;
2643 E1000_WRITE_REG(hw, CTRL, ctrl);
2644 E1000_WRITE_FLUSH(hw);
2648 e1000_raise_mdi_clk(hw, &ctrl);
2649 e1000_lower_mdi_clk(hw, &ctrl);
2655 /******************************************************************************
2656 * Shifts data bits in from the PHY
2658 * hw - Struct containing variables accessed by shared code
2660 * Bits are shifted in in MSB to LSB order.
2661 ******************************************************************************/
2663 e1000_shift_in_mdi_bits(struct e1000_hw *hw)
2669 /* In order to read a register from the PHY, we need to shift in a total
2670 * of 18 bits from the PHY. The first two bit (turnaround) times are used
2671 * to avoid contention on the MDIO pin when a read operation is performed.
2672 * These two bits are ignored by us and thrown away. Bits are "shifted in"
2673 * by raising the input to the Management Data Clock (setting the MDC bit),
2674 * and then reading the value of the MDIO bit.
2676 ctrl = E1000_READ_REG(hw, CTRL);
2678 /* Clear MDIO_DIR (SWDPIO1) to indicate this bit is to be used as input. */
2679 ctrl &= ~E1000_CTRL_MDIO_DIR;
2680 ctrl &= ~E1000_CTRL_MDIO;
2682 E1000_WRITE_REG(hw, CTRL, ctrl);
2683 E1000_WRITE_FLUSH(hw);
2685 /* Raise and Lower the clock before reading in the data. This accounts for
2686 * the turnaround bits. The first clock occurred when we clocked out the
2687 * last bit of the Register Address.
2689 e1000_raise_mdi_clk(hw, &ctrl);
2690 e1000_lower_mdi_clk(hw, &ctrl);
2692 for(data = 0, i = 0; i < 16; i++) {
2694 e1000_raise_mdi_clk(hw, &ctrl);
2695 ctrl = E1000_READ_REG(hw, CTRL);
2696 /* Check to see if we shifted in a "1". */
2697 if(ctrl & E1000_CTRL_MDIO) data |= 1;
2698 e1000_lower_mdi_clk(hw, &ctrl);
2701 e1000_raise_mdi_clk(hw, &ctrl);
2702 e1000_lower_mdi_clk(hw, &ctrl);
2707 /*****************************************************************************
2708 * Reads the value from a PHY register, if the value is on a specific non zero
2709 * page, sets the page first.
2710 * hw - Struct containing variables accessed by shared code
2711 * reg_addr - address of the PHY register to read
2712 ******************************************************************************/
2714 e1000_read_phy_reg(struct e1000_hw *hw,
2720 DEBUGFUNC("e1000_read_phy_reg");
2722 if((hw->phy_type == e1000_phy_igp ||
2723 hw->phy_type == e1000_phy_igp_2) &&
2724 (reg_addr > MAX_PHY_MULTI_PAGE_REG)) {
2725 ret_val = e1000_write_phy_reg_ex(hw, IGP01E1000_PHY_PAGE_SELECT,
2726 (uint16_t)reg_addr);
2732 ret_val = e1000_read_phy_reg_ex(hw, MAX_PHY_REG_ADDRESS & reg_addr,
2739 e1000_read_phy_reg_ex(struct e1000_hw *hw,
2745 const uint32_t phy_addr = 1;
2747 DEBUGFUNC("e1000_read_phy_reg_ex");
2749 if(reg_addr > MAX_PHY_REG_ADDRESS) {
2750 DEBUGOUT1("PHY Address %d is out of range\n", reg_addr);
2751 return -E1000_ERR_PARAM;
2754 if(hw->mac_type > e1000_82543) {
2755 /* Set up Op-code, Phy Address, and register address in the MDI
2756 * Control register. The MAC will take care of interfacing with the
2757 * PHY to retrieve the desired data.
2759 mdic = ((reg_addr << E1000_MDIC_REG_SHIFT) |
2760 (phy_addr << E1000_MDIC_PHY_SHIFT) |
2761 (E1000_MDIC_OP_READ));
2763 E1000_WRITE_REG(hw, MDIC, mdic);
2765 /* Poll the ready bit to see if the MDI read completed */
2766 for(i = 0; i < 64; i++) {
2768 mdic = E1000_READ_REG(hw, MDIC);
2769 if(mdic & E1000_MDIC_READY) break;
2771 if(!(mdic & E1000_MDIC_READY)) {
2772 DEBUGOUT("MDI Read did not complete\n");
2773 return -E1000_ERR_PHY;
2775 if(mdic & E1000_MDIC_ERROR) {
2776 DEBUGOUT("MDI Error\n");
2777 return -E1000_ERR_PHY;
2779 *phy_data = (uint16_t) mdic;
2781 /* We must first send a preamble through the MDIO pin to signal the
2782 * beginning of an MII instruction. This is done by sending 32
2783 * consecutive "1" bits.
2785 e1000_shift_out_mdi_bits(hw, PHY_PREAMBLE, PHY_PREAMBLE_SIZE);
2787 /* Now combine the next few fields that are required for a read
2788 * operation. We use this method instead of calling the
2789 * e1000_shift_out_mdi_bits routine five different times. The format of
2790 * a MII read instruction consists of a shift out of 14 bits and is
2791 * defined as follows:
2792 * <Preamble><SOF><Op Code><Phy Addr><Reg Addr>
2793 * followed by a shift in of 18 bits. This first two bits shifted in
2794 * are TurnAround bits used to avoid contention on the MDIO pin when a
2795 * READ operation is performed. These two bits are thrown away
2796 * followed by a shift in of 16 bits which contains the desired data.
2798 mdic = ((reg_addr) | (phy_addr << 5) |
2799 (PHY_OP_READ << 10) | (PHY_SOF << 12));
2801 e1000_shift_out_mdi_bits(hw, mdic, 14);
2803 /* Now that we've shifted out the read command to the MII, we need to
2804 * "shift in" the 16-bit value (18 total bits) of the requested PHY
2807 *phy_data = e1000_shift_in_mdi_bits(hw);
2809 return E1000_SUCCESS;
2812 /******************************************************************************
2813 * Writes a value to a PHY register
2815 * hw - Struct containing variables accessed by shared code
2816 * reg_addr - address of the PHY register to write
2817 * data - data to write to the PHY
2818 ******************************************************************************/
2820 e1000_write_phy_reg(struct e1000_hw *hw,
2826 DEBUGFUNC("e1000_write_phy_reg");
2828 if((hw->phy_type == e1000_phy_igp ||
2829 hw->phy_type == e1000_phy_igp_2) &&
2830 (reg_addr > MAX_PHY_MULTI_PAGE_REG)) {
2831 ret_val = e1000_write_phy_reg_ex(hw, IGP01E1000_PHY_PAGE_SELECT,
2832 (uint16_t)reg_addr);
2838 ret_val = e1000_write_phy_reg_ex(hw, MAX_PHY_REG_ADDRESS & reg_addr,
2845 e1000_write_phy_reg_ex(struct e1000_hw *hw,
2851 const uint32_t phy_addr = 1;
2853 DEBUGFUNC("e1000_write_phy_reg_ex");
2855 if(reg_addr > MAX_PHY_REG_ADDRESS) {
2856 DEBUGOUT1("PHY Address %d is out of range\n", reg_addr);
2857 return -E1000_ERR_PARAM;
2860 if(hw->mac_type > e1000_82543) {
2861 /* Set up Op-code, Phy Address, register address, and data intended
2862 * for the PHY register in the MDI Control register. The MAC will take
2863 * care of interfacing with the PHY to send the desired data.
2865 mdic = (((uint32_t) phy_data) |
2866 (reg_addr << E1000_MDIC_REG_SHIFT) |
2867 (phy_addr << E1000_MDIC_PHY_SHIFT) |
2868 (E1000_MDIC_OP_WRITE));
2870 E1000_WRITE_REG(hw, MDIC, mdic);
2872 /* Poll the ready bit to see if the MDI read completed */
2873 for(i = 0; i < 640; i++) {
2875 mdic = E1000_READ_REG(hw, MDIC);
2876 if(mdic & E1000_MDIC_READY) break;
2878 if(!(mdic & E1000_MDIC_READY)) {
2879 DEBUGOUT("MDI Write did not complete\n");
2880 return -E1000_ERR_PHY;
2883 /* We'll need to use the SW defined pins to shift the write command
2884 * out to the PHY. We first send a preamble to the PHY to signal the
2885 * beginning of the MII instruction. This is done by sending 32
2886 * consecutive "1" bits.
2888 e1000_shift_out_mdi_bits(hw, PHY_PREAMBLE, PHY_PREAMBLE_SIZE);
2890 /* Now combine the remaining required fields that will indicate a
2891 * write operation. We use this method instead of calling the
2892 * e1000_shift_out_mdi_bits routine for each field in the command. The
2893 * format of a MII write instruction is as follows:
2894 * <Preamble><SOF><Op Code><Phy Addr><Reg Addr><Turnaround><Data>.
2896 mdic = ((PHY_TURNAROUND) | (reg_addr << 2) | (phy_addr << 7) |
2897 (PHY_OP_WRITE << 12) | (PHY_SOF << 14));
2899 mdic |= (uint32_t) phy_data;
2901 e1000_shift_out_mdi_bits(hw, mdic, 32);
2904 return E1000_SUCCESS;
2908 /******************************************************************************
2909 * Returns the PHY to the power-on reset state
2911 * hw - Struct containing variables accessed by shared code
2912 ******************************************************************************/
2914 e1000_phy_hw_reset(struct e1000_hw *hw)
2916 uint32_t ctrl, ctrl_ext;
2920 DEBUGFUNC("e1000_phy_hw_reset");
2922 /* In the case of the phy reset being blocked, it's not an error, we
2923 * simply return success without performing the reset. */
2924 ret_val = e1000_check_phy_reset_block(hw);
2926 return E1000_SUCCESS;
2928 DEBUGOUT("Resetting Phy...\n");
2930 if(hw->mac_type > e1000_82543) {
2931 /* Read the device control register and assert the E1000_CTRL_PHY_RST
2932 * bit. Then, take it out of reset.
2934 ctrl = E1000_READ_REG(hw, CTRL);
2935 E1000_WRITE_REG(hw, CTRL, ctrl | E1000_CTRL_PHY_RST);
2936 E1000_WRITE_FLUSH(hw);
2938 E1000_WRITE_REG(hw, CTRL, ctrl);
2939 E1000_WRITE_FLUSH(hw);
2941 /* Read the Extended Device Control Register, assert the PHY_RESET_DIR
2942 * bit to put the PHY into reset. Then, take it out of reset.
2944 ctrl_ext = E1000_READ_REG(hw, CTRL_EXT);
2945 ctrl_ext |= E1000_CTRL_EXT_SDP4_DIR;
2946 ctrl_ext &= ~E1000_CTRL_EXT_SDP4_DATA;
2947 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
2948 E1000_WRITE_FLUSH(hw);
2950 ctrl_ext |= E1000_CTRL_EXT_SDP4_DATA;
2951 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
2952 E1000_WRITE_FLUSH(hw);
2956 if((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_82547)) {
2957 /* Configure activity LED after PHY reset */
2958 led_ctrl = E1000_READ_REG(hw, LEDCTL);
2959 led_ctrl &= IGP_ACTIVITY_LED_MASK;
2960 led_ctrl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE);
2961 E1000_WRITE_REG(hw, LEDCTL, led_ctrl);
2964 /* Wait for FW to finish PHY configuration. */
2965 ret_val = e1000_get_phy_cfg_done(hw);
2970 /******************************************************************************
2973 * hw - Struct containing variables accessed by shared code
2975 * Sets bit 15 of the MII Control regiser
2976 ******************************************************************************/
2978 e1000_phy_reset(struct e1000_hw *hw)
2983 DEBUGFUNC("e1000_phy_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 switch (hw->mac_type) {
2992 case e1000_82541_rev_2:
2995 ret_val = e1000_phy_hw_reset(hw);
3000 ret_val = e1000_read_phy_reg(hw, PHY_CTRL, &phy_data);
3004 phy_data |= MII_CR_RESET;
3005 ret_val = e1000_write_phy_reg(hw, PHY_CTRL, phy_data);
3013 if(hw->phy_type == e1000_phy_igp || hw->phy_type == e1000_phy_igp_2)
3014 e1000_phy_init_script(hw);
3016 return E1000_SUCCESS;
3019 /******************************************************************************
3020 * Probes the expected PHY address for known PHY IDs
3022 * hw - Struct containing variables accessed by shared code
3023 ******************************************************************************/
3025 e1000_detect_gig_phy(struct e1000_hw *hw)
3027 int32_t phy_init_status, ret_val;
3028 uint16_t phy_id_high, phy_id_low;
3029 boolean_t match = FALSE;
3031 DEBUGFUNC("e1000_detect_gig_phy");
3033 /* The 82571 firmware may still be configuring the PHY. In this
3034 * case, we cannot access the PHY until the configuration is done. So
3035 * we explicitly set the PHY values. */
3036 if(hw->mac_type == e1000_82571 ||
3037 hw->mac_type == e1000_82572) {
3038 hw->phy_id = IGP01E1000_I_PHY_ID;
3039 hw->phy_type = e1000_phy_igp_2;
3040 return E1000_SUCCESS;
3043 /* Read the PHY ID Registers to identify which PHY is onboard. */
3044 ret_val = e1000_read_phy_reg(hw, PHY_ID1, &phy_id_high);
3048 hw->phy_id = (uint32_t) (phy_id_high << 16);
3050 ret_val = e1000_read_phy_reg(hw, PHY_ID2, &phy_id_low);
3054 hw->phy_id |= (uint32_t) (phy_id_low & PHY_REVISION_MASK);
3055 hw->phy_revision = (uint32_t) phy_id_low & ~PHY_REVISION_MASK;
3057 switch(hw->mac_type) {
3059 if(hw->phy_id == M88E1000_E_PHY_ID) match = TRUE;
3062 if(hw->phy_id == M88E1000_I_PHY_ID) match = TRUE;
3066 case e1000_82545_rev_3:
3068 case e1000_82546_rev_3:
3069 if(hw->phy_id == M88E1011_I_PHY_ID) match = TRUE;
3072 case e1000_82541_rev_2:
3074 case e1000_82547_rev_2:
3075 if(hw->phy_id == IGP01E1000_I_PHY_ID) match = TRUE;
3078 if(hw->phy_id == M88E1111_I_PHY_ID) match = TRUE;
3081 DEBUGOUT1("Invalid MAC type %d\n", hw->mac_type);
3082 return -E1000_ERR_CONFIG;
3084 phy_init_status = e1000_set_phy_type(hw);
3086 if ((match) && (phy_init_status == E1000_SUCCESS)) {
3087 DEBUGOUT1("PHY ID 0x%X detected\n", hw->phy_id);
3088 return E1000_SUCCESS;
3090 DEBUGOUT1("Invalid PHY ID 0x%X\n", hw->phy_id);
3091 return -E1000_ERR_PHY;
3094 /******************************************************************************
3095 * Resets the PHY's DSP
3097 * hw - Struct containing variables accessed by shared code
3098 ******************************************************************************/
3100 e1000_phy_reset_dsp(struct e1000_hw *hw)
3103 DEBUGFUNC("e1000_phy_reset_dsp");
3106 ret_val = e1000_write_phy_reg(hw, 29, 0x001d);
3108 ret_val = e1000_write_phy_reg(hw, 30, 0x00c1);
3110 ret_val = e1000_write_phy_reg(hw, 30, 0x0000);
3112 ret_val = E1000_SUCCESS;
3118 /******************************************************************************
3119 * Get PHY information from various PHY registers for igp PHY only.
3121 * hw - Struct containing variables accessed by shared code
3122 * phy_info - PHY information structure
3123 ******************************************************************************/
3125 e1000_phy_igp_get_info(struct e1000_hw *hw,
3126 struct e1000_phy_info *phy_info)
3129 uint16_t phy_data, polarity, min_length, max_length, average;
3131 DEBUGFUNC("e1000_phy_igp_get_info");
3133 /* The downshift status is checked only once, after link is established,
3134 * and it stored in the hw->speed_downgraded parameter. */
3135 phy_info->downshift = (e1000_downshift)hw->speed_downgraded;
3137 /* IGP01E1000 does not need to support it. */
3138 phy_info->extended_10bt_distance = e1000_10bt_ext_dist_enable_normal;
3140 /* IGP01E1000 always correct polarity reversal */
3141 phy_info->polarity_correction = e1000_polarity_reversal_enabled;
3143 /* Check polarity status */
3144 ret_val = e1000_check_polarity(hw, &polarity);
3148 phy_info->cable_polarity = polarity;
3150 ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_STATUS, &phy_data);
3154 phy_info->mdix_mode = (phy_data & IGP01E1000_PSSR_MDIX) >>
3155 IGP01E1000_PSSR_MDIX_SHIFT;
3157 if((phy_data & IGP01E1000_PSSR_SPEED_MASK) ==
3158 IGP01E1000_PSSR_SPEED_1000MBPS) {
3159 /* Local/Remote Receiver Information are only valid at 1000 Mbps */
3160 ret_val = e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_data);
3164 phy_info->local_rx = (phy_data & SR_1000T_LOCAL_RX_STATUS) >>
3165 SR_1000T_LOCAL_RX_STATUS_SHIFT;
3166 phy_info->remote_rx = (phy_data & SR_1000T_REMOTE_RX_STATUS) >>
3167 SR_1000T_REMOTE_RX_STATUS_SHIFT;
3169 /* Get cable length */
3170 ret_val = e1000_get_cable_length(hw, &min_length, &max_length);
3174 /* Translate to old method */
3175 average = (max_length + min_length) / 2;
3177 if(average <= e1000_igp_cable_length_50)
3178 phy_info->cable_length = e1000_cable_length_50;
3179 else if(average <= e1000_igp_cable_length_80)
3180 phy_info->cable_length = e1000_cable_length_50_80;
3181 else if(average <= e1000_igp_cable_length_110)
3182 phy_info->cable_length = e1000_cable_length_80_110;
3183 else if(average <= e1000_igp_cable_length_140)
3184 phy_info->cable_length = e1000_cable_length_110_140;
3186 phy_info->cable_length = e1000_cable_length_140;
3189 return E1000_SUCCESS;
3192 /******************************************************************************
3193 * Get PHY information from various PHY registers fot m88 PHY only.
3195 * hw - Struct containing variables accessed by shared code
3196 * phy_info - PHY information structure
3197 ******************************************************************************/
3199 e1000_phy_m88_get_info(struct e1000_hw *hw,
3200 struct e1000_phy_info *phy_info)
3203 uint16_t phy_data, polarity;
3205 DEBUGFUNC("e1000_phy_m88_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 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
3215 phy_info->extended_10bt_distance =
3216 (phy_data & M88E1000_PSCR_10BT_EXT_DIST_ENABLE) >>
3217 M88E1000_PSCR_10BT_EXT_DIST_ENABLE_SHIFT;
3218 phy_info->polarity_correction =
3219 (phy_data & M88E1000_PSCR_POLARITY_REVERSAL) >>
3220 M88E1000_PSCR_POLARITY_REVERSAL_SHIFT;
3222 /* Check polarity status */
3223 ret_val = e1000_check_polarity(hw, &polarity);
3226 phy_info->cable_polarity = polarity;
3228 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS, &phy_data);
3232 phy_info->mdix_mode = (phy_data & M88E1000_PSSR_MDIX) >>
3233 M88E1000_PSSR_MDIX_SHIFT;
3235 if ((phy_data & M88E1000_PSSR_SPEED) == M88E1000_PSSR_1000MBS) {
3236 /* Cable Length Estimation and Local/Remote Receiver Information
3237 * are only valid at 1000 Mbps.
3239 phy_info->cable_length = ((phy_data & M88E1000_PSSR_CABLE_LENGTH) >>
3240 M88E1000_PSSR_CABLE_LENGTH_SHIFT);
3242 ret_val = e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_data);
3246 phy_info->local_rx = (phy_data & SR_1000T_LOCAL_RX_STATUS) >>
3247 SR_1000T_LOCAL_RX_STATUS_SHIFT;
3249 phy_info->remote_rx = (phy_data & SR_1000T_REMOTE_RX_STATUS) >>
3250 SR_1000T_REMOTE_RX_STATUS_SHIFT;
3253 return E1000_SUCCESS;
3256 /******************************************************************************
3257 * Get PHY information from various PHY registers
3259 * hw - Struct containing variables accessed by shared code
3260 * phy_info - PHY information structure
3261 ******************************************************************************/
3263 e1000_phy_get_info(struct e1000_hw *hw,
3264 struct e1000_phy_info *phy_info)
3269 DEBUGFUNC("e1000_phy_get_info");
3271 phy_info->cable_length = e1000_cable_length_undefined;
3272 phy_info->extended_10bt_distance = e1000_10bt_ext_dist_enable_undefined;
3273 phy_info->cable_polarity = e1000_rev_polarity_undefined;
3274 phy_info->downshift = e1000_downshift_undefined;
3275 phy_info->polarity_correction = e1000_polarity_reversal_undefined;
3276 phy_info->mdix_mode = e1000_auto_x_mode_undefined;
3277 phy_info->local_rx = e1000_1000t_rx_status_undefined;
3278 phy_info->remote_rx = e1000_1000t_rx_status_undefined;
3280 if(hw->media_type != e1000_media_type_copper) {
3281 DEBUGOUT("PHY info is only valid for copper media\n");
3282 return -E1000_ERR_CONFIG;
3285 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
3289 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
3293 if((phy_data & MII_SR_LINK_STATUS) != MII_SR_LINK_STATUS) {
3294 DEBUGOUT("PHY info is only valid if link is up\n");
3295 return -E1000_ERR_CONFIG;
3298 if(hw->phy_type == e1000_phy_igp ||
3299 hw->phy_type == e1000_phy_igp_2)
3300 return e1000_phy_igp_get_info(hw, phy_info);
3302 return e1000_phy_m88_get_info(hw, phy_info);
3306 e1000_validate_mdi_setting(struct e1000_hw *hw)
3308 DEBUGFUNC("e1000_validate_mdi_settings");
3310 if(!hw->autoneg && (hw->mdix == 0 || hw->mdix == 3)) {
3311 DEBUGOUT("Invalid MDI setting detected\n");
3313 return -E1000_ERR_CONFIG;
3315 return E1000_SUCCESS;
3319 /******************************************************************************
3320 * Sets up eeprom variables in the hw struct. Must be called after mac_type
3323 * hw - Struct containing variables accessed by shared code
3324 *****************************************************************************/
3326 e1000_init_eeprom_params(struct e1000_hw *hw)
3328 struct e1000_eeprom_info *eeprom = &hw->eeprom;
3329 uint32_t eecd = E1000_READ_REG(hw, EECD);
3330 int32_t ret_val = E1000_SUCCESS;
3331 uint16_t eeprom_size;
3333 DEBUGFUNC("e1000_init_eeprom_params");
3335 switch (hw->mac_type) {
3336 case e1000_82542_rev2_0:
3337 case e1000_82542_rev2_1:
3340 eeprom->type = e1000_eeprom_microwire;
3341 eeprom->word_size = 64;
3342 eeprom->opcode_bits = 3;
3343 eeprom->address_bits = 6;
3344 eeprom->delay_usec = 50;
3345 eeprom->use_eerd = FALSE;
3346 eeprom->use_eewr = FALSE;
3350 case e1000_82545_rev_3:
3352 case e1000_82546_rev_3:
3353 eeprom->type = e1000_eeprom_microwire;
3354 eeprom->opcode_bits = 3;
3355 eeprom->delay_usec = 50;
3356 if(eecd & E1000_EECD_SIZE) {
3357 eeprom->word_size = 256;
3358 eeprom->address_bits = 8;
3360 eeprom->word_size = 64;
3361 eeprom->address_bits = 6;
3363 eeprom->use_eerd = FALSE;
3364 eeprom->use_eewr = FALSE;
3367 case e1000_82541_rev_2:
3369 case e1000_82547_rev_2:
3370 if (eecd & E1000_EECD_TYPE) {
3371 eeprom->type = e1000_eeprom_spi;
3372 eeprom->opcode_bits = 8;
3373 eeprom->delay_usec = 1;
3374 if (eecd & E1000_EECD_ADDR_BITS) {
3375 eeprom->page_size = 32;
3376 eeprom->address_bits = 16;
3378 eeprom->page_size = 8;
3379 eeprom->address_bits = 8;
3382 eeprom->type = e1000_eeprom_microwire;
3383 eeprom->opcode_bits = 3;
3384 eeprom->delay_usec = 50;
3385 if (eecd & E1000_EECD_ADDR_BITS) {
3386 eeprom->word_size = 256;
3387 eeprom->address_bits = 8;
3389 eeprom->word_size = 64;
3390 eeprom->address_bits = 6;
3393 eeprom->use_eerd = FALSE;
3394 eeprom->use_eewr = FALSE;
3398 eeprom->type = e1000_eeprom_spi;
3399 eeprom->opcode_bits = 8;
3400 eeprom->delay_usec = 1;
3401 if (eecd & E1000_EECD_ADDR_BITS) {
3402 eeprom->page_size = 32;
3403 eeprom->address_bits = 16;
3405 eeprom->page_size = 8;
3406 eeprom->address_bits = 8;
3408 eeprom->use_eerd = FALSE;
3409 eeprom->use_eewr = FALSE;
3412 eeprom->type = e1000_eeprom_spi;
3413 eeprom->opcode_bits = 8;
3414 eeprom->delay_usec = 1;
3415 if (eecd & E1000_EECD_ADDR_BITS) {
3416 eeprom->page_size = 32;
3417 eeprom->address_bits = 16;
3419 eeprom->page_size = 8;
3420 eeprom->address_bits = 8;
3422 eeprom->use_eerd = TRUE;
3423 eeprom->use_eewr = TRUE;
3424 if(e1000_is_onboard_nvm_eeprom(hw) == FALSE) {
3425 eeprom->type = e1000_eeprom_flash;
3426 eeprom->word_size = 2048;
3428 /* Ensure that the Autonomous FLASH update bit is cleared due to
3429 * Flash update issue on parts which use a FLASH for NVM. */
3430 eecd &= ~E1000_EECD_AUPDEN;
3431 E1000_WRITE_REG(hw, EECD, eecd);
3438 if (eeprom->type == e1000_eeprom_spi) {
3439 /* eeprom_size will be an enum [0..8] that maps to eeprom sizes 128B to
3440 * 32KB (incremented by powers of 2).
3442 if(hw->mac_type <= e1000_82547_rev_2) {
3443 /* Set to default value for initial eeprom read. */
3444 eeprom->word_size = 64;
3445 ret_val = e1000_read_eeprom(hw, EEPROM_CFG, 1, &eeprom_size);
3448 eeprom_size = (eeprom_size & EEPROM_SIZE_MASK) >> EEPROM_SIZE_SHIFT;
3449 /* 256B eeprom size was not supported in earlier hardware, so we
3450 * bump eeprom_size up one to ensure that "1" (which maps to 256B)
3451 * is never the result used in the shifting logic below. */
3455 eeprom_size = (uint16_t)((eecd & E1000_EECD_SIZE_EX_MASK) >>
3456 E1000_EECD_SIZE_EX_SHIFT);
3459 eeprom->word_size = 1 << (eeprom_size + EEPROM_WORD_SIZE_SHIFT);
3464 /******************************************************************************
3465 * Raises the EEPROM's clock input.
3467 * hw - Struct containing variables accessed by shared code
3468 * eecd - EECD's current value
3469 *****************************************************************************/
3471 e1000_raise_ee_clk(struct e1000_hw *hw,
3474 /* Raise the clock input to the EEPROM (by setting the SK bit), and then
3475 * wait <delay> microseconds.
3477 *eecd = *eecd | E1000_EECD_SK;
3478 E1000_WRITE_REG(hw, EECD, *eecd);
3479 E1000_WRITE_FLUSH(hw);
3480 udelay(hw->eeprom.delay_usec);
3483 /******************************************************************************
3484 * Lowers the EEPROM's clock input.
3486 * hw - Struct containing variables accessed by shared code
3487 * eecd - EECD's current value
3488 *****************************************************************************/
3490 e1000_lower_ee_clk(struct e1000_hw *hw,
3493 /* Lower the clock input to the EEPROM (by clearing the SK bit), and then
3494 * wait 50 microseconds.
3496 *eecd = *eecd & ~E1000_EECD_SK;
3497 E1000_WRITE_REG(hw, EECD, *eecd);
3498 E1000_WRITE_FLUSH(hw);
3499 udelay(hw->eeprom.delay_usec);
3502 /******************************************************************************
3503 * Shift data bits out to the EEPROM.
3505 * hw - Struct containing variables accessed by shared code
3506 * data - data to send to the EEPROM
3507 * count - number of bits to shift out
3508 *****************************************************************************/
3510 e1000_shift_out_ee_bits(struct e1000_hw *hw,
3514 struct e1000_eeprom_info *eeprom = &hw->eeprom;
3518 /* We need to shift "count" bits out to the EEPROM. So, value in the
3519 * "data" parameter will be shifted out to the EEPROM one bit at a time.
3520 * In order to do this, "data" must be broken down into bits.
3522 mask = 0x01 << (count - 1);
3523 eecd = E1000_READ_REG(hw, EECD);
3524 if (eeprom->type == e1000_eeprom_microwire) {
3525 eecd &= ~E1000_EECD_DO;
3526 } else if (eeprom->type == e1000_eeprom_spi) {
3527 eecd |= E1000_EECD_DO;
3530 /* A "1" is shifted out to the EEPROM by setting bit "DI" to a "1",
3531 * and then raising and then lowering the clock (the SK bit controls
3532 * the clock input to the EEPROM). A "0" is shifted out to the EEPROM
3533 * by setting "DI" to "0" and then raising and then lowering the clock.
3535 eecd &= ~E1000_EECD_DI;
3538 eecd |= E1000_EECD_DI;
3540 E1000_WRITE_REG(hw, EECD, eecd);
3541 E1000_WRITE_FLUSH(hw);
3543 udelay(eeprom->delay_usec);
3545 e1000_raise_ee_clk(hw, &eecd);
3546 e1000_lower_ee_clk(hw, &eecd);
3552 /* We leave the "DI" bit set to "0" when we leave this routine. */
3553 eecd &= ~E1000_EECD_DI;
3554 E1000_WRITE_REG(hw, EECD, eecd);
3557 /******************************************************************************
3558 * Shift data bits in from the EEPROM
3560 * hw - Struct containing variables accessed by shared code
3561 *****************************************************************************/
3563 e1000_shift_in_ee_bits(struct e1000_hw *hw,
3570 /* In order to read a register from the EEPROM, we need to shift 'count'
3571 * bits in from the EEPROM. Bits are "shifted in" by raising the clock
3572 * input to the EEPROM (setting the SK bit), and then reading the value of
3573 * the "DO" bit. During this "shifting in" process the "DI" bit should
3577 eecd = E1000_READ_REG(hw, EECD);
3579 eecd &= ~(E1000_EECD_DO | E1000_EECD_DI);
3582 for(i = 0; i < count; i++) {
3584 e1000_raise_ee_clk(hw, &eecd);
3586 eecd = E1000_READ_REG(hw, EECD);
3588 eecd &= ~(E1000_EECD_DI);
3589 if(eecd & E1000_EECD_DO)
3592 e1000_lower_ee_clk(hw, &eecd);
3598 /******************************************************************************
3599 * Prepares EEPROM for access
3601 * hw - Struct containing variables accessed by shared code
3603 * Lowers EEPROM clock. Clears input pin. Sets the chip select pin. This
3604 * function should be called before issuing a command to the EEPROM.
3605 *****************************************************************************/
3607 e1000_acquire_eeprom(struct e1000_hw *hw)
3609 struct e1000_eeprom_info *eeprom = &hw->eeprom;
3612 DEBUGFUNC("e1000_acquire_eeprom");
3614 if(e1000_get_hw_eeprom_semaphore(hw))
3615 return -E1000_ERR_EEPROM;
3617 eecd = E1000_READ_REG(hw, EECD);
3619 if (hw->mac_type != e1000_82573) {
3620 /* Request EEPROM Access */
3621 if(hw->mac_type > e1000_82544) {
3622 eecd |= E1000_EECD_REQ;
3623 E1000_WRITE_REG(hw, EECD, eecd);
3624 eecd = E1000_READ_REG(hw, EECD);
3625 while((!(eecd & E1000_EECD_GNT)) &&
3626 (i < E1000_EEPROM_GRANT_ATTEMPTS)) {
3629 eecd = E1000_READ_REG(hw, EECD);
3631 if(!(eecd & E1000_EECD_GNT)) {
3632 eecd &= ~E1000_EECD_REQ;
3633 E1000_WRITE_REG(hw, EECD, eecd);
3634 DEBUGOUT("Could not acquire EEPROM grant\n");
3635 e1000_put_hw_eeprom_semaphore(hw);
3636 return -E1000_ERR_EEPROM;
3641 /* Setup EEPROM for Read/Write */
3643 if (eeprom->type == e1000_eeprom_microwire) {
3644 /* Clear SK and DI */
3645 eecd &= ~(E1000_EECD_DI | E1000_EECD_SK);
3646 E1000_WRITE_REG(hw, EECD, eecd);
3649 eecd |= E1000_EECD_CS;
3650 E1000_WRITE_REG(hw, EECD, eecd);
3651 } else if (eeprom->type == e1000_eeprom_spi) {
3652 /* Clear SK and CS */
3653 eecd &= ~(E1000_EECD_CS | E1000_EECD_SK);
3654 E1000_WRITE_REG(hw, EECD, eecd);
3658 return E1000_SUCCESS;
3661 /******************************************************************************
3662 * Returns EEPROM to a "standby" state
3664 * hw - Struct containing variables accessed by shared code
3665 *****************************************************************************/
3667 e1000_standby_eeprom(struct e1000_hw *hw)
3669 struct e1000_eeprom_info *eeprom = &hw->eeprom;
3672 eecd = E1000_READ_REG(hw, EECD);
3674 if(eeprom->type == e1000_eeprom_microwire) {
3675 eecd &= ~(E1000_EECD_CS | E1000_EECD_SK);
3676 E1000_WRITE_REG(hw, EECD, eecd);
3677 E1000_WRITE_FLUSH(hw);
3678 udelay(eeprom->delay_usec);
3681 eecd |= E1000_EECD_SK;
3682 E1000_WRITE_REG(hw, EECD, eecd);
3683 E1000_WRITE_FLUSH(hw);
3684 udelay(eeprom->delay_usec);
3687 eecd |= E1000_EECD_CS;
3688 E1000_WRITE_REG(hw, EECD, eecd);
3689 E1000_WRITE_FLUSH(hw);
3690 udelay(eeprom->delay_usec);
3693 eecd &= ~E1000_EECD_SK;
3694 E1000_WRITE_REG(hw, EECD, eecd);
3695 E1000_WRITE_FLUSH(hw);
3696 udelay(eeprom->delay_usec);
3697 } else if(eeprom->type == e1000_eeprom_spi) {
3698 /* Toggle CS to flush commands */
3699 eecd |= E1000_EECD_CS;
3700 E1000_WRITE_REG(hw, EECD, eecd);
3701 E1000_WRITE_FLUSH(hw);
3702 udelay(eeprom->delay_usec);
3703 eecd &= ~E1000_EECD_CS;
3704 E1000_WRITE_REG(hw, EECD, eecd);
3705 E1000_WRITE_FLUSH(hw);
3706 udelay(eeprom->delay_usec);
3710 /******************************************************************************
3711 * Terminates a command by inverting the EEPROM's chip select pin
3713 * hw - Struct containing variables accessed by shared code
3714 *****************************************************************************/
3716 e1000_release_eeprom(struct e1000_hw *hw)
3720 DEBUGFUNC("e1000_release_eeprom");
3722 eecd = E1000_READ_REG(hw, EECD);
3724 if (hw->eeprom.type == e1000_eeprom_spi) {
3725 eecd |= E1000_EECD_CS; /* Pull CS high */
3726 eecd &= ~E1000_EECD_SK; /* Lower SCK */
3728 E1000_WRITE_REG(hw, EECD, eecd);
3730 udelay(hw->eeprom.delay_usec);
3731 } else if(hw->eeprom.type == e1000_eeprom_microwire) {
3732 /* cleanup eeprom */
3734 /* CS on Microwire is active-high */
3735 eecd &= ~(E1000_EECD_CS | E1000_EECD_DI);
3737 E1000_WRITE_REG(hw, EECD, eecd);
3739 /* Rising edge of clock */
3740 eecd |= E1000_EECD_SK;
3741 E1000_WRITE_REG(hw, EECD, eecd);
3742 E1000_WRITE_FLUSH(hw);
3743 udelay(hw->eeprom.delay_usec);
3745 /* Falling edge of clock */
3746 eecd &= ~E1000_EECD_SK;
3747 E1000_WRITE_REG(hw, EECD, eecd);
3748 E1000_WRITE_FLUSH(hw);
3749 udelay(hw->eeprom.delay_usec);
3752 /* Stop requesting EEPROM access */
3753 if(hw->mac_type > e1000_82544) {
3754 eecd &= ~E1000_EECD_REQ;
3755 E1000_WRITE_REG(hw, EECD, eecd);
3758 e1000_put_hw_eeprom_semaphore(hw);
3761 /******************************************************************************
3762 * Reads a 16 bit word from the EEPROM.
3764 * hw - Struct containing variables accessed by shared code
3765 *****************************************************************************/
3767 e1000_spi_eeprom_ready(struct e1000_hw *hw)
3769 uint16_t retry_count = 0;
3770 uint8_t spi_stat_reg;
3772 DEBUGFUNC("e1000_spi_eeprom_ready");
3774 /* Read "Status Register" repeatedly until the LSB is cleared. The
3775 * EEPROM will signal that the command has been completed by clearing
3776 * bit 0 of the internal status register. If it's not cleared within
3777 * 5 milliseconds, then error out.
3781 e1000_shift_out_ee_bits(hw, EEPROM_RDSR_OPCODE_SPI,
3782 hw->eeprom.opcode_bits);
3783 spi_stat_reg = (uint8_t)e1000_shift_in_ee_bits(hw, 8);
3784 if (!(spi_stat_reg & EEPROM_STATUS_RDY_SPI))
3790 e1000_standby_eeprom(hw);
3791 } while(retry_count < EEPROM_MAX_RETRY_SPI);
3793 /* ATMEL SPI write time could vary from 0-20mSec on 3.3V devices (and
3794 * only 0-5mSec on 5V devices)
3796 if(retry_count >= EEPROM_MAX_RETRY_SPI) {
3797 DEBUGOUT("SPI EEPROM Status error\n");
3798 return -E1000_ERR_EEPROM;
3801 return E1000_SUCCESS;
3804 /******************************************************************************
3805 * Reads a 16 bit word from the EEPROM.
3807 * hw - Struct containing variables accessed by shared code
3808 * offset - offset of word in the EEPROM to read
3809 * data - word read from the EEPROM
3810 * words - number of words to read
3811 *****************************************************************************/
3813 e1000_read_eeprom(struct e1000_hw *hw,
3818 struct e1000_eeprom_info *eeprom = &hw->eeprom;
3822 DEBUGFUNC("e1000_read_eeprom");
3824 /* A check for invalid values: offset too large, too many words, and not
3827 if((offset >= eeprom->word_size) || (words > eeprom->word_size - offset) ||
3829 DEBUGOUT("\"words\" parameter out of bounds\n");
3830 return -E1000_ERR_EEPROM;
3833 /* FLASH reads without acquiring the semaphore are safe in 82573-based
3836 if ((e1000_is_onboard_nvm_eeprom(hw) == TRUE) ||
3837 (hw->mac_type != e1000_82573)) {
3838 /* Prepare the EEPROM for reading */
3839 if(e1000_acquire_eeprom(hw) != E1000_SUCCESS)
3840 return -E1000_ERR_EEPROM;
3843 if(eeprom->use_eerd == TRUE) {
3844 ret_val = e1000_read_eeprom_eerd(hw, offset, words, data);
3845 if ((e1000_is_onboard_nvm_eeprom(hw) == TRUE) ||
3846 (hw->mac_type != e1000_82573))
3847 e1000_release_eeprom(hw);
3851 if(eeprom->type == e1000_eeprom_spi) {
3853 uint8_t read_opcode = EEPROM_READ_OPCODE_SPI;
3855 if(e1000_spi_eeprom_ready(hw)) {
3856 e1000_release_eeprom(hw);
3857 return -E1000_ERR_EEPROM;
3860 e1000_standby_eeprom(hw);
3862 /* Some SPI eeproms use the 8th address bit embedded in the opcode */
3863 if((eeprom->address_bits == 8) && (offset >= 128))
3864 read_opcode |= EEPROM_A8_OPCODE_SPI;
3866 /* Send the READ command (opcode + addr) */
3867 e1000_shift_out_ee_bits(hw, read_opcode, eeprom->opcode_bits);
3868 e1000_shift_out_ee_bits(hw, (uint16_t)(offset*2), eeprom->address_bits);
3870 /* Read the data. The address of the eeprom internally increments with
3871 * each byte (spi) being read, saving on the overhead of eeprom setup
3872 * and tear-down. The address counter will roll over if reading beyond
3873 * the size of the eeprom, thus allowing the entire memory to be read
3874 * starting from any offset. */
3875 for (i = 0; i < words; i++) {
3876 word_in = e1000_shift_in_ee_bits(hw, 16);
3877 data[i] = (word_in >> 8) | (word_in << 8);
3879 } else if(eeprom->type == e1000_eeprom_microwire) {
3880 for (i = 0; i < words; i++) {
3881 /* Send the READ command (opcode + addr) */
3882 e1000_shift_out_ee_bits(hw, EEPROM_READ_OPCODE_MICROWIRE,
3883 eeprom->opcode_bits);
3884 e1000_shift_out_ee_bits(hw, (uint16_t)(offset + i),
3885 eeprom->address_bits);
3887 /* Read the data. For microwire, each word requires the overhead
3888 * of eeprom setup and tear-down. */
3889 data[i] = e1000_shift_in_ee_bits(hw, 16);
3890 e1000_standby_eeprom(hw);
3894 /* End this read operation */
3895 e1000_release_eeprom(hw);
3897 return E1000_SUCCESS;
3900 /******************************************************************************
3901 * Reads a 16 bit word from the EEPROM using the EERD register.
3903 * hw - Struct containing variables accessed by shared code
3904 * offset - offset of word in the EEPROM to read
3905 * data - word read from the EEPROM
3906 * words - number of words to read
3907 *****************************************************************************/
3909 e1000_read_eeprom_eerd(struct e1000_hw *hw,
3914 uint32_t i, eerd = 0;
3917 for (i = 0; i < words; i++) {
3918 eerd = ((offset+i) << E1000_EEPROM_RW_ADDR_SHIFT) +
3919 E1000_EEPROM_RW_REG_START;
3921 E1000_WRITE_REG(hw, EERD, eerd);
3922 error = e1000_poll_eerd_eewr_done(hw, E1000_EEPROM_POLL_READ);
3927 data[i] = (E1000_READ_REG(hw, EERD) >> E1000_EEPROM_RW_REG_DATA);
3934 /******************************************************************************
3935 * Writes a 16 bit word from the EEPROM using the EEWR register.
3937 * hw - Struct containing variables accessed by shared code
3938 * offset - offset of word in the EEPROM to read
3939 * data - word read from the EEPROM
3940 * words - number of words to read
3941 *****************************************************************************/
3943 e1000_write_eeprom_eewr(struct e1000_hw *hw,
3948 uint32_t register_value = 0;
3952 for (i = 0; i < words; i++) {
3953 register_value = (data[i] << E1000_EEPROM_RW_REG_DATA) |
3954 ((offset+i) << E1000_EEPROM_RW_ADDR_SHIFT) |
3955 E1000_EEPROM_RW_REG_START;
3957 error = e1000_poll_eerd_eewr_done(hw, E1000_EEPROM_POLL_WRITE);
3962 E1000_WRITE_REG(hw, EEWR, register_value);
3964 error = e1000_poll_eerd_eewr_done(hw, E1000_EEPROM_POLL_WRITE);
3974 /******************************************************************************
3975 * Polls the status bit (bit 1) of the EERD to determine when the read is done.
3977 * hw - Struct containing variables accessed by shared code
3978 *****************************************************************************/
3980 e1000_poll_eerd_eewr_done(struct e1000_hw *hw, int eerd)
3982 uint32_t attempts = 100000;
3983 uint32_t i, reg = 0;
3984 int32_t done = E1000_ERR_EEPROM;
3986 for(i = 0; i < attempts; i++) {
3987 if(eerd == E1000_EEPROM_POLL_READ)
3988 reg = E1000_READ_REG(hw, EERD);
3990 reg = E1000_READ_REG(hw, EEWR);
3992 if(reg & E1000_EEPROM_RW_REG_DONE) {
3993 done = E1000_SUCCESS;
4002 /***************************************************************************
4003 * Description: Determines if the onboard NVM is FLASH or EEPROM.
4005 * hw - Struct containing variables accessed by shared code
4006 ****************************************************************************/
4008 e1000_is_onboard_nvm_eeprom(struct e1000_hw *hw)
4012 if(hw->mac_type == e1000_82573) {
4013 eecd = E1000_READ_REG(hw, EECD);
4015 /* Isolate bits 15 & 16 */
4016 eecd = ((eecd >> 15) & 0x03);
4018 /* If both bits are set, device is Flash type */
4026 /******************************************************************************
4027 * Verifies that the EEPROM has a valid checksum
4029 * hw - Struct containing variables accessed by shared code
4031 * Reads the first 64 16 bit words of the EEPROM and sums the values read.
4032 * If the the sum of the 64 16 bit words is 0xBABA, the EEPROM's checksum is
4034 *****************************************************************************/
4036 e1000_validate_eeprom_checksum(struct e1000_hw *hw)
4038 uint16_t checksum = 0;
4039 uint16_t i, eeprom_data;
4041 DEBUGFUNC("e1000_validate_eeprom_checksum");
4043 if ((hw->mac_type == e1000_82573) &&
4044 (e1000_is_onboard_nvm_eeprom(hw) == FALSE)) {
4045 /* Check bit 4 of word 10h. If it is 0, firmware is done updating
4046 * 10h-12h. Checksum may need to be fixed. */
4047 e1000_read_eeprom(hw, 0x10, 1, &eeprom_data);
4048 if ((eeprom_data & 0x10) == 0) {
4049 /* Read 0x23 and check bit 15. This bit is a 1 when the checksum
4050 * has already been fixed. If the checksum is still wrong and this
4051 * bit is a 1, we need to return bad checksum. Otherwise, we need
4052 * to set this bit to a 1 and update the checksum. */
4053 e1000_read_eeprom(hw, 0x23, 1, &eeprom_data);
4054 if ((eeprom_data & 0x8000) == 0) {
4055 eeprom_data |= 0x8000;
4056 e1000_write_eeprom(hw, 0x23, 1, &eeprom_data);
4057 e1000_update_eeprom_checksum(hw);
4062 for(i = 0; i < (EEPROM_CHECKSUM_REG + 1); i++) {
4063 if(e1000_read_eeprom(hw, i, 1, &eeprom_data) < 0) {
4064 DEBUGOUT("EEPROM Read Error\n");
4065 return -E1000_ERR_EEPROM;
4067 checksum += eeprom_data;
4070 if(checksum == (uint16_t) EEPROM_SUM)
4071 return E1000_SUCCESS;
4073 DEBUGOUT("EEPROM Checksum Invalid\n");
4074 return -E1000_ERR_EEPROM;
4078 /******************************************************************************
4079 * Calculates the EEPROM checksum and writes it to the EEPROM
4081 * hw - Struct containing variables accessed by shared code
4083 * Sums the first 63 16 bit words of the EEPROM. Subtracts the sum from 0xBABA.
4084 * Writes the difference to word offset 63 of the EEPROM.
4085 *****************************************************************************/
4087 e1000_update_eeprom_checksum(struct e1000_hw *hw)
4089 uint16_t checksum = 0;
4090 uint16_t i, eeprom_data;
4092 DEBUGFUNC("e1000_update_eeprom_checksum");
4094 for(i = 0; i < EEPROM_CHECKSUM_REG; i++) {
4095 if(e1000_read_eeprom(hw, i, 1, &eeprom_data) < 0) {
4096 DEBUGOUT("EEPROM Read Error\n");
4097 return -E1000_ERR_EEPROM;
4099 checksum += eeprom_data;
4101 checksum = (uint16_t) EEPROM_SUM - checksum;
4102 if(e1000_write_eeprom(hw, EEPROM_CHECKSUM_REG, 1, &checksum) < 0) {
4103 DEBUGOUT("EEPROM Write Error\n");
4104 return -E1000_ERR_EEPROM;
4105 } else if (hw->eeprom.type == e1000_eeprom_flash) {
4106 e1000_commit_shadow_ram(hw);
4108 return E1000_SUCCESS;
4111 /******************************************************************************
4112 * Parent function for writing words to the different EEPROM types.
4114 * hw - Struct containing variables accessed by shared code
4115 * offset - offset within the EEPROM to be written to
4116 * words - number of words to write
4117 * data - 16 bit word to be written to the EEPROM
4119 * If e1000_update_eeprom_checksum is not called after this function, the
4120 * EEPROM will most likely contain an invalid checksum.
4121 *****************************************************************************/
4123 e1000_write_eeprom(struct e1000_hw *hw,
4128 struct e1000_eeprom_info *eeprom = &hw->eeprom;
4131 DEBUGFUNC("e1000_write_eeprom");
4133 /* A check for invalid values: offset too large, too many words, and not
4136 if((offset >= eeprom->word_size) || (words > eeprom->word_size - offset) ||
4138 DEBUGOUT("\"words\" parameter out of bounds\n");
4139 return -E1000_ERR_EEPROM;
4142 /* 82573 writes only through eewr */
4143 if(eeprom->use_eewr == TRUE)
4144 return e1000_write_eeprom_eewr(hw, offset, words, data);
4146 /* Prepare the EEPROM for writing */
4147 if (e1000_acquire_eeprom(hw) != E1000_SUCCESS)
4148 return -E1000_ERR_EEPROM;
4150 if(eeprom->type == e1000_eeprom_microwire) {
4151 status = e1000_write_eeprom_microwire(hw, offset, words, data);
4153 status = e1000_write_eeprom_spi(hw, offset, words, data);
4157 /* Done with writing */
4158 e1000_release_eeprom(hw);
4163 /******************************************************************************
4164 * Writes a 16 bit word to a given offset in an SPI EEPROM.
4166 * hw - Struct containing variables accessed by shared code
4167 * offset - offset within the EEPROM to be written to
4168 * words - number of words to write
4169 * data - pointer to array of 8 bit words to be written to the EEPROM
4171 *****************************************************************************/
4173 e1000_write_eeprom_spi(struct e1000_hw *hw,
4178 struct e1000_eeprom_info *eeprom = &hw->eeprom;
4181 DEBUGFUNC("e1000_write_eeprom_spi");
4183 while (widx < words) {
4184 uint8_t write_opcode = EEPROM_WRITE_OPCODE_SPI;
4186 if(e1000_spi_eeprom_ready(hw)) return -E1000_ERR_EEPROM;
4188 e1000_standby_eeprom(hw);
4190 /* Send the WRITE ENABLE command (8 bit opcode ) */
4191 e1000_shift_out_ee_bits(hw, EEPROM_WREN_OPCODE_SPI,
4192 eeprom->opcode_bits);
4194 e1000_standby_eeprom(hw);
4196 /* Some SPI eeproms use the 8th address bit embedded in the opcode */
4197 if((eeprom->address_bits == 8) && (offset >= 128))
4198 write_opcode |= EEPROM_A8_OPCODE_SPI;
4200 /* Send the Write command (8-bit opcode + addr) */
4201 e1000_shift_out_ee_bits(hw, write_opcode, eeprom->opcode_bits);
4203 e1000_shift_out_ee_bits(hw, (uint16_t)((offset + widx)*2),
4204 eeprom->address_bits);
4208 /* Loop to allow for up to whole page write (32 bytes) of eeprom */
4209 while (widx < words) {
4210 uint16_t word_out = data[widx];
4211 word_out = (word_out >> 8) | (word_out << 8);
4212 e1000_shift_out_ee_bits(hw, word_out, 16);
4215 /* Some larger eeprom sizes are capable of a 32-byte PAGE WRITE
4216 * operation, while the smaller eeproms are capable of an 8-byte
4217 * PAGE WRITE operation. Break the inner loop to pass new address
4219 if((((offset + widx)*2) % eeprom->page_size) == 0) {
4220 e1000_standby_eeprom(hw);
4226 return E1000_SUCCESS;
4229 /******************************************************************************
4230 * Writes a 16 bit word to a given offset in a Microwire EEPROM.
4232 * hw - Struct containing variables accessed by shared code
4233 * offset - offset within the EEPROM to be written to
4234 * words - number of words to write
4235 * data - pointer to array of 16 bit words to be written to the EEPROM
4237 *****************************************************************************/
4239 e1000_write_eeprom_microwire(struct e1000_hw *hw,
4244 struct e1000_eeprom_info *eeprom = &hw->eeprom;
4246 uint16_t words_written = 0;
4249 DEBUGFUNC("e1000_write_eeprom_microwire");
4251 /* Send the write enable command to the EEPROM (3-bit opcode plus
4252 * 6/8-bit dummy address beginning with 11). It's less work to include
4253 * the 11 of the dummy address as part of the opcode than it is to shift
4254 * it over the correct number of bits for the address. This puts the
4255 * EEPROM into write/erase mode.
4257 e1000_shift_out_ee_bits(hw, EEPROM_EWEN_OPCODE_MICROWIRE,
4258 (uint16_t)(eeprom->opcode_bits + 2));
4260 e1000_shift_out_ee_bits(hw, 0, (uint16_t)(eeprom->address_bits - 2));
4262 /* Prepare the EEPROM */
4263 e1000_standby_eeprom(hw);
4265 while (words_written < words) {
4266 /* Send the Write command (3-bit opcode + addr) */
4267 e1000_shift_out_ee_bits(hw, EEPROM_WRITE_OPCODE_MICROWIRE,
4268 eeprom->opcode_bits);
4270 e1000_shift_out_ee_bits(hw, (uint16_t)(offset + words_written),
4271 eeprom->address_bits);
4274 e1000_shift_out_ee_bits(hw, data[words_written], 16);
4276 /* Toggle the CS line. This in effect tells the EEPROM to execute
4277 * the previous command.
4279 e1000_standby_eeprom(hw);
4281 /* Read DO repeatedly until it is high (equal to '1'). The EEPROM will
4282 * signal that the command has been completed by raising the DO signal.
4283 * If DO does not go high in 10 milliseconds, then error out.
4285 for(i = 0; i < 200; i++) {
4286 eecd = E1000_READ_REG(hw, EECD);
4287 if(eecd & E1000_EECD_DO) break;
4291 DEBUGOUT("EEPROM Write did not complete\n");
4292 return -E1000_ERR_EEPROM;
4295 /* Recover from write */
4296 e1000_standby_eeprom(hw);
4301 /* Send the write disable command to the EEPROM (3-bit opcode plus
4302 * 6/8-bit dummy address beginning with 10). It's less work to include
4303 * the 10 of the dummy address as part of the opcode than it is to shift
4304 * it over the correct number of bits for the address. This takes the
4305 * EEPROM out of write/erase mode.
4307 e1000_shift_out_ee_bits(hw, EEPROM_EWDS_OPCODE_MICROWIRE,
4308 (uint16_t)(eeprom->opcode_bits + 2));
4310 e1000_shift_out_ee_bits(hw, 0, (uint16_t)(eeprom->address_bits - 2));
4312 return E1000_SUCCESS;
4315 /******************************************************************************
4316 * Flushes the cached eeprom to NVM. This is done by saving the modified values
4317 * in the eeprom cache and the non modified values in the currently active bank
4320 * hw - Struct containing variables accessed by shared code
4321 * offset - offset of word in the EEPROM to read
4322 * data - word read from the EEPROM
4323 * words - number of words to read
4324 *****************************************************************************/
4326 e1000_commit_shadow_ram(struct e1000_hw *hw)
4328 uint32_t attempts = 100000;
4332 int32_t error = E1000_SUCCESS;
4334 /* The flop register will be used to determine if flash type is STM */
4335 flop = E1000_READ_REG(hw, FLOP);
4337 if (hw->mac_type == e1000_82573) {
4338 for (i=0; i < attempts; i++) {
4339 eecd = E1000_READ_REG(hw, EECD);
4340 if ((eecd & E1000_EECD_FLUPD) == 0) {
4346 if (i == attempts) {
4347 return -E1000_ERR_EEPROM;
4350 /* If STM opcode located in bits 15:8 of flop, reset firmware */
4351 if ((flop & 0xFF00) == E1000_STM_OPCODE) {
4352 E1000_WRITE_REG(hw, HICR, E1000_HICR_FW_RESET);
4355 /* Perform the flash update */
4356 E1000_WRITE_REG(hw, EECD, eecd | E1000_EECD_FLUPD);
4358 for (i=0; i < attempts; i++) {
4359 eecd = E1000_READ_REG(hw, EECD);
4360 if ((eecd & E1000_EECD_FLUPD) == 0) {
4366 if (i == attempts) {
4367 return -E1000_ERR_EEPROM;
4374 /******************************************************************************
4375 * Reads the adapter's part number from the EEPROM
4377 * hw - Struct containing variables accessed by shared code
4378 * part_num - Adapter's part number
4379 *****************************************************************************/
4381 e1000_read_part_num(struct e1000_hw *hw,
4384 uint16_t offset = EEPROM_PBA_BYTE_1;
4385 uint16_t eeprom_data;
4387 DEBUGFUNC("e1000_read_part_num");
4389 /* Get word 0 from EEPROM */
4390 if(e1000_read_eeprom(hw, offset, 1, &eeprom_data) < 0) {
4391 DEBUGOUT("EEPROM Read Error\n");
4392 return -E1000_ERR_EEPROM;
4394 /* Save word 0 in upper half of part_num */
4395 *part_num = (uint32_t) (eeprom_data << 16);
4397 /* Get word 1 from EEPROM */
4398 if(e1000_read_eeprom(hw, ++offset, 1, &eeprom_data) < 0) {
4399 DEBUGOUT("EEPROM Read Error\n");
4400 return -E1000_ERR_EEPROM;
4402 /* Save word 1 in lower half of part_num */
4403 *part_num |= eeprom_data;
4405 return E1000_SUCCESS;
4408 /******************************************************************************
4409 * Reads the adapter's MAC address from the EEPROM and inverts the LSB for the
4410 * second function of dual function devices
4412 * hw - Struct containing variables accessed by shared code
4413 *****************************************************************************/
4415 e1000_read_mac_addr(struct e1000_hw * hw)
4418 uint16_t eeprom_data, i;
4420 DEBUGFUNC("e1000_read_mac_addr");
4422 for(i = 0; i < NODE_ADDRESS_SIZE; i += 2) {
4424 if(e1000_read_eeprom(hw, offset, 1, &eeprom_data) < 0) {
4425 DEBUGOUT("EEPROM Read Error\n");
4426 return -E1000_ERR_EEPROM;
4428 hw->perm_mac_addr[i] = (uint8_t) (eeprom_data & 0x00FF);
4429 hw->perm_mac_addr[i+1] = (uint8_t) (eeprom_data >> 8);
4431 switch (hw->mac_type) {
4435 case e1000_82546_rev_3:
4437 if(E1000_READ_REG(hw, STATUS) & E1000_STATUS_FUNC_1)
4438 hw->perm_mac_addr[5] ^= 0x01;
4442 for(i = 0; i < NODE_ADDRESS_SIZE; i++)
4443 hw->mac_addr[i] = hw->perm_mac_addr[i];
4444 return E1000_SUCCESS;
4447 /******************************************************************************
4448 * Initializes receive address filters.
4450 * hw - Struct containing variables accessed by shared code
4452 * Places the MAC address in receive address register 0 and clears the rest
4453 * of the receive addresss registers. Clears the multicast table. Assumes
4454 * the receiver is in reset when the routine is called.
4455 *****************************************************************************/
4457 e1000_init_rx_addrs(struct e1000_hw *hw)
4462 DEBUGFUNC("e1000_init_rx_addrs");
4464 /* Setup the receive address. */
4465 DEBUGOUT("Programming MAC Address into RAR[0]\n");
4467 e1000_rar_set(hw, hw->mac_addr, 0);
4469 rar_num = E1000_RAR_ENTRIES;
4471 /* Reserve a spot for the Locally Administered Address to work around
4472 * an 82571 issue in which a reset on one port will reload the MAC on
4473 * the other port. */
4474 if ((hw->mac_type == e1000_82571) && (hw->laa_is_present == TRUE))
4476 /* Zero out the other 15 receive addresses. */
4477 DEBUGOUT("Clearing RAR[1-15]\n");
4478 for(i = 1; i < rar_num; i++) {
4479 E1000_WRITE_REG_ARRAY(hw, RA, (i << 1), 0);
4480 E1000_WRITE_REG_ARRAY(hw, RA, ((i << 1) + 1), 0);
4484 /******************************************************************************
4485 * Updates the MAC's list of multicast addresses.
4487 * hw - Struct containing variables accessed by shared code
4488 * mc_addr_list - the list of new multicast addresses
4489 * mc_addr_count - number of addresses
4490 * pad - number of bytes between addresses in the list
4491 * rar_used_count - offset where to start adding mc addresses into the RAR's
4493 * The given list replaces any existing list. Clears the last 15 receive
4494 * address registers and the multicast table. Uses receive address registers
4495 * for the first 15 multicast addresses, and hashes the rest into the
4497 *****************************************************************************/
4499 e1000_mc_addr_list_update(struct e1000_hw *hw,
4500 uint8_t *mc_addr_list,
4501 uint32_t mc_addr_count,
4503 uint32_t rar_used_count)
4505 uint32_t hash_value;
4507 uint32_t num_rar_entry;
4508 uint32_t num_mta_entry;
4510 DEBUGFUNC("e1000_mc_addr_list_update");
4512 /* Set the new number of MC addresses that we are being requested to use. */
4513 hw->num_mc_addrs = mc_addr_count;
4515 /* Clear RAR[1-15] */
4516 DEBUGOUT(" Clearing RAR[1-15]\n");
4517 num_rar_entry = E1000_RAR_ENTRIES;
4518 /* Reserve a spot for the Locally Administered Address to work around
4519 * an 82571 issue in which a reset on one port will reload the MAC on
4520 * the other port. */
4521 if ((hw->mac_type == e1000_82571) && (hw->laa_is_present == TRUE))
4524 for(i = rar_used_count; i < num_rar_entry; i++) {
4525 E1000_WRITE_REG_ARRAY(hw, RA, (i << 1), 0);
4526 E1000_WRITE_REG_ARRAY(hw, RA, ((i << 1) + 1), 0);
4530 DEBUGOUT(" Clearing MTA\n");
4531 num_mta_entry = E1000_NUM_MTA_REGISTERS;
4532 for(i = 0; i < num_mta_entry; i++) {
4533 E1000_WRITE_REG_ARRAY(hw, MTA, i, 0);
4536 /* Add the new addresses */
4537 for(i = 0; i < mc_addr_count; i++) {
4538 DEBUGOUT(" Adding the multicast addresses:\n");
4539 DEBUGOUT7(" MC Addr #%d =%.2X %.2X %.2X %.2X %.2X %.2X\n", i,
4540 mc_addr_list[i * (ETH_LENGTH_OF_ADDRESS + pad)],
4541 mc_addr_list[i * (ETH_LENGTH_OF_ADDRESS + pad) + 1],
4542 mc_addr_list[i * (ETH_LENGTH_OF_ADDRESS + pad) + 2],
4543 mc_addr_list[i * (ETH_LENGTH_OF_ADDRESS + pad) + 3],
4544 mc_addr_list[i * (ETH_LENGTH_OF_ADDRESS + pad) + 4],
4545 mc_addr_list[i * (ETH_LENGTH_OF_ADDRESS + pad) + 5]);
4547 hash_value = e1000_hash_mc_addr(hw,
4549 (i * (ETH_LENGTH_OF_ADDRESS + pad)));
4551 DEBUGOUT1(" Hash value = 0x%03X\n", hash_value);
4553 /* Place this multicast address in the RAR if there is room, *
4554 * else put it in the MTA
4556 if (rar_used_count < num_rar_entry) {
4558 mc_addr_list + (i * (ETH_LENGTH_OF_ADDRESS + pad)),
4562 e1000_mta_set(hw, hash_value);
4565 DEBUGOUT("MC Update Complete\n");
4568 /******************************************************************************
4569 * Hashes an address to determine its location in the multicast table
4571 * hw - Struct containing variables accessed by shared code
4572 * mc_addr - the multicast address to hash
4573 *****************************************************************************/
4575 e1000_hash_mc_addr(struct e1000_hw *hw,
4578 uint32_t hash_value = 0;
4580 /* The portion of the address that is used for the hash table is
4581 * determined by the mc_filter_type setting.
4583 switch (hw->mc_filter_type) {
4584 /* [0] [1] [2] [3] [4] [5]
4589 /* [47:36] i.e. 0x563 for above example address */
4590 hash_value = ((mc_addr[4] >> 4) | (((uint16_t) mc_addr[5]) << 4));
4593 /* [46:35] i.e. 0xAC6 for above example address */
4594 hash_value = ((mc_addr[4] >> 3) | (((uint16_t) mc_addr[5]) << 5));
4597 /* [45:34] i.e. 0x5D8 for above example address */
4598 hash_value = ((mc_addr[4] >> 2) | (((uint16_t) mc_addr[5]) << 6));
4601 /* [43:32] i.e. 0x634 for above example address */
4602 hash_value = ((mc_addr[4]) | (((uint16_t) mc_addr[5]) << 8));
4606 hash_value &= 0xFFF;
4611 /******************************************************************************
4612 * Sets the bit in the multicast table corresponding to the hash value.
4614 * hw - Struct containing variables accessed by shared code
4615 * hash_value - Multicast address hash value
4616 *****************************************************************************/
4618 e1000_mta_set(struct e1000_hw *hw,
4619 uint32_t hash_value)
4621 uint32_t hash_bit, hash_reg;
4625 /* The MTA is a register array of 128 32-bit registers.
4626 * It is treated like an array of 4096 bits. We want to set
4627 * bit BitArray[hash_value]. So we figure out what register
4628 * the bit is in, read it, OR in the new bit, then write
4629 * back the new value. The register is determined by the
4630 * upper 7 bits of the hash value and the bit within that
4631 * register are determined by the lower 5 bits of the value.
4633 hash_reg = (hash_value >> 5) & 0x7F;
4634 hash_bit = hash_value & 0x1F;
4636 mta = E1000_READ_REG_ARRAY(hw, MTA, hash_reg);
4638 mta |= (1 << hash_bit);
4640 /* If we are on an 82544 and we are trying to write an odd offset
4641 * in the MTA, save off the previous entry before writing and
4642 * restore the old value after writing.
4644 if((hw->mac_type == e1000_82544) && ((hash_reg & 0x1) == 1)) {
4645 temp = E1000_READ_REG_ARRAY(hw, MTA, (hash_reg - 1));
4646 E1000_WRITE_REG_ARRAY(hw, MTA, hash_reg, mta);
4647 E1000_WRITE_REG_ARRAY(hw, MTA, (hash_reg - 1), temp);
4649 E1000_WRITE_REG_ARRAY(hw, MTA, hash_reg, mta);
4653 /******************************************************************************
4654 * Puts an ethernet address into a receive address register.
4656 * hw - Struct containing variables accessed by shared code
4657 * addr - Address to put into receive address register
4658 * index - Receive address register to write
4659 *****************************************************************************/
4661 e1000_rar_set(struct e1000_hw *hw,
4665 uint32_t rar_low, rar_high;
4667 /* HW expects these in little endian so we reverse the byte order
4668 * from network order (big endian) to little endian
4670 rar_low = ((uint32_t) addr[0] |
4671 ((uint32_t) addr[1] << 8) |
4672 ((uint32_t) addr[2] << 16) | ((uint32_t) addr[3] << 24));
4674 rar_high = ((uint32_t) addr[4] | ((uint32_t) addr[5] << 8) | E1000_RAH_AV);
4676 E1000_WRITE_REG_ARRAY(hw, RA, (index << 1), rar_low);
4677 E1000_WRITE_REG_ARRAY(hw, RA, ((index << 1) + 1), rar_high);
4680 /******************************************************************************
4681 * Writes a value to the specified offset in the VLAN filter table.
4683 * hw - Struct containing variables accessed by shared code
4684 * offset - Offset in VLAN filer table to write
4685 * value - Value to write into VLAN filter table
4686 *****************************************************************************/
4688 e1000_write_vfta(struct e1000_hw *hw,
4694 if((hw->mac_type == e1000_82544) && ((offset & 0x1) == 1)) {
4695 temp = E1000_READ_REG_ARRAY(hw, VFTA, (offset - 1));
4696 E1000_WRITE_REG_ARRAY(hw, VFTA, offset, value);
4697 E1000_WRITE_REG_ARRAY(hw, VFTA, (offset - 1), temp);
4699 E1000_WRITE_REG_ARRAY(hw, VFTA, offset, value);
4703 /******************************************************************************
4704 * Clears the VLAN filer table
4706 * hw - Struct containing variables accessed by shared code
4707 *****************************************************************************/
4709 e1000_clear_vfta(struct e1000_hw *hw)
4712 uint32_t vfta_value = 0;
4713 uint32_t vfta_offset = 0;
4714 uint32_t vfta_bit_in_reg = 0;
4716 if (hw->mac_type == e1000_82573) {
4717 if (hw->mng_cookie.vlan_id != 0) {
4718 /* The VFTA is a 4096b bit-field, each identifying a single VLAN
4719 * ID. The following operations determine which 32b entry
4720 * (i.e. offset) into the array we want to set the VLAN ID
4721 * (i.e. bit) of the manageability unit. */
4722 vfta_offset = (hw->mng_cookie.vlan_id >>
4723 E1000_VFTA_ENTRY_SHIFT) &
4724 E1000_VFTA_ENTRY_MASK;
4725 vfta_bit_in_reg = 1 << (hw->mng_cookie.vlan_id &
4726 E1000_VFTA_ENTRY_BIT_SHIFT_MASK);
4729 for (offset = 0; offset < E1000_VLAN_FILTER_TBL_SIZE; offset++) {
4730 /* If the offset we want to clear is the same offset of the
4731 * manageability VLAN ID, then clear all bits except that of the
4732 * manageability unit */
4733 vfta_value = (offset == vfta_offset) ? vfta_bit_in_reg : 0;
4734 E1000_WRITE_REG_ARRAY(hw, VFTA, offset, vfta_value);
4739 e1000_id_led_init(struct e1000_hw * hw)
4742 const uint32_t ledctl_mask = 0x000000FF;
4743 const uint32_t ledctl_on = E1000_LEDCTL_MODE_LED_ON;
4744 const uint32_t ledctl_off = E1000_LEDCTL_MODE_LED_OFF;
4745 uint16_t eeprom_data, i, temp;
4746 const uint16_t led_mask = 0x0F;
4748 DEBUGFUNC("e1000_id_led_init");
4750 if(hw->mac_type < e1000_82540) {
4752 return E1000_SUCCESS;
4755 ledctl = E1000_READ_REG(hw, LEDCTL);
4756 hw->ledctl_default = ledctl;
4757 hw->ledctl_mode1 = hw->ledctl_default;
4758 hw->ledctl_mode2 = hw->ledctl_default;
4760 if(e1000_read_eeprom(hw, EEPROM_ID_LED_SETTINGS, 1, &eeprom_data) < 0) {
4761 DEBUGOUT("EEPROM Read Error\n");
4762 return -E1000_ERR_EEPROM;
4764 if((eeprom_data== ID_LED_RESERVED_0000) ||
4765 (eeprom_data == ID_LED_RESERVED_FFFF)) eeprom_data = ID_LED_DEFAULT;
4766 for(i = 0; i < 4; i++) {
4767 temp = (eeprom_data >> (i << 2)) & led_mask;
4769 case ID_LED_ON1_DEF2:
4770 case ID_LED_ON1_ON2:
4771 case ID_LED_ON1_OFF2:
4772 hw->ledctl_mode1 &= ~(ledctl_mask << (i << 3));
4773 hw->ledctl_mode1 |= ledctl_on << (i << 3);
4775 case ID_LED_OFF1_DEF2:
4776 case ID_LED_OFF1_ON2:
4777 case ID_LED_OFF1_OFF2:
4778 hw->ledctl_mode1 &= ~(ledctl_mask << (i << 3));
4779 hw->ledctl_mode1 |= ledctl_off << (i << 3);
4786 case ID_LED_DEF1_ON2:
4787 case ID_LED_ON1_ON2:
4788 case ID_LED_OFF1_ON2:
4789 hw->ledctl_mode2 &= ~(ledctl_mask << (i << 3));
4790 hw->ledctl_mode2 |= ledctl_on << (i << 3);
4792 case ID_LED_DEF1_OFF2:
4793 case ID_LED_ON1_OFF2:
4794 case ID_LED_OFF1_OFF2:
4795 hw->ledctl_mode2 &= ~(ledctl_mask << (i << 3));
4796 hw->ledctl_mode2 |= ledctl_off << (i << 3);
4803 return E1000_SUCCESS;
4806 /******************************************************************************
4807 * Prepares SW controlable LED for use and saves the current state of the LED.
4809 * hw - Struct containing variables accessed by shared code
4810 *****************************************************************************/
4812 e1000_setup_led(struct e1000_hw *hw)
4815 int32_t ret_val = E1000_SUCCESS;
4817 DEBUGFUNC("e1000_setup_led");
4819 switch(hw->mac_type) {
4820 case e1000_82542_rev2_0:
4821 case e1000_82542_rev2_1:
4824 /* No setup necessary */
4828 case e1000_82541_rev_2:
4829 case e1000_82547_rev_2:
4830 /* Turn off PHY Smart Power Down (if enabled) */
4831 ret_val = e1000_read_phy_reg(hw, IGP01E1000_GMII_FIFO,
4832 &hw->phy_spd_default);
4835 ret_val = e1000_write_phy_reg(hw, IGP01E1000_GMII_FIFO,
4836 (uint16_t)(hw->phy_spd_default &
4837 ~IGP01E1000_GMII_SPD));
4842 if(hw->media_type == e1000_media_type_fiber) {
4843 ledctl = E1000_READ_REG(hw, LEDCTL);
4844 /* Save current LEDCTL settings */
4845 hw->ledctl_default = ledctl;
4847 ledctl &= ~(E1000_LEDCTL_LED0_IVRT |
4848 E1000_LEDCTL_LED0_BLINK |
4849 E1000_LEDCTL_LED0_MODE_MASK);
4850 ledctl |= (E1000_LEDCTL_MODE_LED_OFF <<
4851 E1000_LEDCTL_LED0_MODE_SHIFT);
4852 E1000_WRITE_REG(hw, LEDCTL, ledctl);
4853 } else if(hw->media_type == e1000_media_type_copper)
4854 E1000_WRITE_REG(hw, LEDCTL, hw->ledctl_mode1);
4858 return E1000_SUCCESS;
4861 /******************************************************************************
4862 * Restores the saved state of the SW controlable LED.
4864 * hw - Struct containing variables accessed by shared code
4865 *****************************************************************************/
4867 e1000_cleanup_led(struct e1000_hw *hw)
4869 int32_t ret_val = E1000_SUCCESS;
4871 DEBUGFUNC("e1000_cleanup_led");
4873 switch(hw->mac_type) {
4874 case e1000_82542_rev2_0:
4875 case e1000_82542_rev2_1:
4878 /* No cleanup necessary */
4882 case e1000_82541_rev_2:
4883 case e1000_82547_rev_2:
4884 /* Turn on PHY Smart Power Down (if previously enabled) */
4885 ret_val = e1000_write_phy_reg(hw, IGP01E1000_GMII_FIFO,
4886 hw->phy_spd_default);
4891 /* Restore LEDCTL settings */
4892 E1000_WRITE_REG(hw, LEDCTL, hw->ledctl_default);
4896 return E1000_SUCCESS;
4899 /******************************************************************************
4900 * Turns on the software controllable LED
4902 * hw - Struct containing variables accessed by shared code
4903 *****************************************************************************/
4905 e1000_led_on(struct e1000_hw *hw)
4907 uint32_t ctrl = E1000_READ_REG(hw, CTRL);
4909 DEBUGFUNC("e1000_led_on");
4911 switch(hw->mac_type) {
4912 case e1000_82542_rev2_0:
4913 case e1000_82542_rev2_1:
4915 /* Set SW Defineable Pin 0 to turn on the LED */
4916 ctrl |= E1000_CTRL_SWDPIN0;
4917 ctrl |= E1000_CTRL_SWDPIO0;
4920 if(hw->media_type == e1000_media_type_fiber) {
4921 /* Set SW Defineable Pin 0 to turn on the LED */
4922 ctrl |= E1000_CTRL_SWDPIN0;
4923 ctrl |= E1000_CTRL_SWDPIO0;
4925 /* Clear SW Defineable Pin 0 to turn on the LED */
4926 ctrl &= ~E1000_CTRL_SWDPIN0;
4927 ctrl |= E1000_CTRL_SWDPIO0;
4931 if(hw->media_type == e1000_media_type_fiber) {
4932 /* Clear SW Defineable Pin 0 to turn on the LED */
4933 ctrl &= ~E1000_CTRL_SWDPIN0;
4934 ctrl |= E1000_CTRL_SWDPIO0;
4935 } else if(hw->media_type == e1000_media_type_copper) {
4936 E1000_WRITE_REG(hw, LEDCTL, hw->ledctl_mode2);
4937 return E1000_SUCCESS;
4942 E1000_WRITE_REG(hw, CTRL, ctrl);
4944 return E1000_SUCCESS;
4947 /******************************************************************************
4948 * Turns off the software controllable LED
4950 * hw - Struct containing variables accessed by shared code
4951 *****************************************************************************/
4953 e1000_led_off(struct e1000_hw *hw)
4955 uint32_t ctrl = E1000_READ_REG(hw, CTRL);
4957 DEBUGFUNC("e1000_led_off");
4959 switch(hw->mac_type) {
4960 case e1000_82542_rev2_0:
4961 case e1000_82542_rev2_1:
4963 /* Clear SW Defineable Pin 0 to turn off the LED */
4964 ctrl &= ~E1000_CTRL_SWDPIN0;
4965 ctrl |= E1000_CTRL_SWDPIO0;
4968 if(hw->media_type == e1000_media_type_fiber) {
4969 /* Clear SW Defineable Pin 0 to turn off the LED */
4970 ctrl &= ~E1000_CTRL_SWDPIN0;
4971 ctrl |= E1000_CTRL_SWDPIO0;
4973 /* Set SW Defineable Pin 0 to turn off the LED */
4974 ctrl |= E1000_CTRL_SWDPIN0;
4975 ctrl |= E1000_CTRL_SWDPIO0;
4979 if(hw->media_type == e1000_media_type_fiber) {
4980 /* Set SW Defineable Pin 0 to turn off the LED */
4981 ctrl |= E1000_CTRL_SWDPIN0;
4982 ctrl |= E1000_CTRL_SWDPIO0;
4983 } else if(hw->media_type == e1000_media_type_copper) {
4984 E1000_WRITE_REG(hw, LEDCTL, hw->ledctl_mode1);
4985 return E1000_SUCCESS;
4990 E1000_WRITE_REG(hw, CTRL, ctrl);
4992 return E1000_SUCCESS;
4995 /******************************************************************************
4996 * Clears all hardware statistics counters.
4998 * hw - Struct containing variables accessed by shared code
4999 *****************************************************************************/
5001 e1000_clear_hw_cntrs(struct e1000_hw *hw)
5003 volatile uint32_t temp;
5005 temp = E1000_READ_REG(hw, CRCERRS);
5006 temp = E1000_READ_REG(hw, SYMERRS);
5007 temp = E1000_READ_REG(hw, MPC);
5008 temp = E1000_READ_REG(hw, SCC);
5009 temp = E1000_READ_REG(hw, ECOL);
5010 temp = E1000_READ_REG(hw, MCC);
5011 temp = E1000_READ_REG(hw, LATECOL);
5012 temp = E1000_READ_REG(hw, COLC);
5013 temp = E1000_READ_REG(hw, DC);
5014 temp = E1000_READ_REG(hw, SEC);
5015 temp = E1000_READ_REG(hw, RLEC);
5016 temp = E1000_READ_REG(hw, XONRXC);
5017 temp = E1000_READ_REG(hw, XONTXC);
5018 temp = E1000_READ_REG(hw, XOFFRXC);
5019 temp = E1000_READ_REG(hw, XOFFTXC);
5020 temp = E1000_READ_REG(hw, FCRUC);
5021 temp = E1000_READ_REG(hw, PRC64);
5022 temp = E1000_READ_REG(hw, PRC127);
5023 temp = E1000_READ_REG(hw, PRC255);
5024 temp = E1000_READ_REG(hw, PRC511);
5025 temp = E1000_READ_REG(hw, PRC1023);
5026 temp = E1000_READ_REG(hw, PRC1522);
5027 temp = E1000_READ_REG(hw, GPRC);
5028 temp = E1000_READ_REG(hw, BPRC);
5029 temp = E1000_READ_REG(hw, MPRC);
5030 temp = E1000_READ_REG(hw, GPTC);
5031 temp = E1000_READ_REG(hw, GORCL);
5032 temp = E1000_READ_REG(hw, GORCH);
5033 temp = E1000_READ_REG(hw, GOTCL);
5034 temp = E1000_READ_REG(hw, GOTCH);
5035 temp = E1000_READ_REG(hw, RNBC);
5036 temp = E1000_READ_REG(hw, RUC);
5037 temp = E1000_READ_REG(hw, RFC);
5038 temp = E1000_READ_REG(hw, ROC);
5039 temp = E1000_READ_REG(hw, RJC);
5040 temp = E1000_READ_REG(hw, TORL);
5041 temp = E1000_READ_REG(hw, TORH);
5042 temp = E1000_READ_REG(hw, TOTL);
5043 temp = E1000_READ_REG(hw, TOTH);
5044 temp = E1000_READ_REG(hw, TPR);
5045 temp = E1000_READ_REG(hw, TPT);
5046 temp = E1000_READ_REG(hw, PTC64);
5047 temp = E1000_READ_REG(hw, PTC127);
5048 temp = E1000_READ_REG(hw, PTC255);
5049 temp = E1000_READ_REG(hw, PTC511);
5050 temp = E1000_READ_REG(hw, PTC1023);
5051 temp = E1000_READ_REG(hw, PTC1522);
5052 temp = E1000_READ_REG(hw, MPTC);
5053 temp = E1000_READ_REG(hw, BPTC);
5055 if(hw->mac_type < e1000_82543) return;
5057 temp = E1000_READ_REG(hw, ALGNERRC);
5058 temp = E1000_READ_REG(hw, RXERRC);
5059 temp = E1000_READ_REG(hw, TNCRS);
5060 temp = E1000_READ_REG(hw, CEXTERR);
5061 temp = E1000_READ_REG(hw, TSCTC);
5062 temp = E1000_READ_REG(hw, TSCTFC);
5064 if(hw->mac_type <= e1000_82544) return;
5066 temp = E1000_READ_REG(hw, MGTPRC);
5067 temp = E1000_READ_REG(hw, MGTPDC);
5068 temp = E1000_READ_REG(hw, MGTPTC);
5070 if(hw->mac_type <= e1000_82547_rev_2) return;
5072 temp = E1000_READ_REG(hw, IAC);
5073 temp = E1000_READ_REG(hw, ICRXOC);
5074 temp = E1000_READ_REG(hw, ICRXPTC);
5075 temp = E1000_READ_REG(hw, ICRXATC);
5076 temp = E1000_READ_REG(hw, ICTXPTC);
5077 temp = E1000_READ_REG(hw, ICTXATC);
5078 temp = E1000_READ_REG(hw, ICTXQEC);
5079 temp = E1000_READ_REG(hw, ICTXQMTC);
5080 temp = E1000_READ_REG(hw, ICRXDMTC);
5083 /******************************************************************************
5084 * Resets Adaptive IFS to its default state.
5086 * hw - Struct containing variables accessed by shared code
5088 * Call this after e1000_init_hw. You may override the IFS defaults by setting
5089 * hw->ifs_params_forced to TRUE. However, you must initialize hw->
5090 * current_ifs_val, ifs_min_val, ifs_max_val, ifs_step_size, and ifs_ratio
5091 * before calling this function.
5092 *****************************************************************************/
5094 e1000_reset_adaptive(struct e1000_hw *hw)
5096 DEBUGFUNC("e1000_reset_adaptive");
5098 if(hw->adaptive_ifs) {
5099 if(!hw->ifs_params_forced) {
5100 hw->current_ifs_val = 0;
5101 hw->ifs_min_val = IFS_MIN;
5102 hw->ifs_max_val = IFS_MAX;
5103 hw->ifs_step_size = IFS_STEP;
5104 hw->ifs_ratio = IFS_RATIO;
5106 hw->in_ifs_mode = FALSE;
5107 E1000_WRITE_REG(hw, AIT, 0);
5109 DEBUGOUT("Not in Adaptive IFS mode!\n");
5113 /******************************************************************************
5114 * Called during the callback/watchdog routine to update IFS value based on
5115 * the ratio of transmits to collisions.
5117 * hw - Struct containing variables accessed by shared code
5118 * tx_packets - Number of transmits since last callback
5119 * total_collisions - Number of collisions since last callback
5120 *****************************************************************************/
5122 e1000_update_adaptive(struct e1000_hw *hw)
5124 DEBUGFUNC("e1000_update_adaptive");
5126 if(hw->adaptive_ifs) {
5127 if((hw->collision_delta * hw->ifs_ratio) > hw->tx_packet_delta) {
5128 if(hw->tx_packet_delta > MIN_NUM_XMITS) {
5129 hw->in_ifs_mode = TRUE;
5130 if(hw->current_ifs_val < hw->ifs_max_val) {
5131 if(hw->current_ifs_val == 0)
5132 hw->current_ifs_val = hw->ifs_min_val;
5134 hw->current_ifs_val += hw->ifs_step_size;
5135 E1000_WRITE_REG(hw, AIT, hw->current_ifs_val);
5139 if(hw->in_ifs_mode && (hw->tx_packet_delta <= MIN_NUM_XMITS)) {
5140 hw->current_ifs_val = 0;
5141 hw->in_ifs_mode = FALSE;
5142 E1000_WRITE_REG(hw, AIT, 0);
5146 DEBUGOUT("Not in Adaptive IFS mode!\n");
5150 /******************************************************************************
5151 * Adjusts the statistic counters when a frame is accepted by TBI_ACCEPT
5153 * hw - Struct containing variables accessed by shared code
5154 * frame_len - The length of the frame in question
5155 * mac_addr - The Ethernet destination address of the frame in question
5156 *****************************************************************************/
5158 e1000_tbi_adjust_stats(struct e1000_hw *hw,
5159 struct e1000_hw_stats *stats,
5165 /* First adjust the frame length. */
5167 /* We need to adjust the statistics counters, since the hardware
5168 * counters overcount this packet as a CRC error and undercount
5169 * the packet as a good packet
5171 /* This packet should not be counted as a CRC error. */
5173 /* This packet does count as a Good Packet Received. */
5176 /* Adjust the Good Octets received counters */
5177 carry_bit = 0x80000000 & stats->gorcl;
5178 stats->gorcl += frame_len;
5179 /* If the high bit of Gorcl (the low 32 bits of the Good Octets
5180 * Received Count) was one before the addition,
5181 * AND it is zero after, then we lost the carry out,
5182 * need to add one to Gorch (Good Octets Received Count High).
5183 * This could be simplified if all environments supported
5186 if(carry_bit && ((stats->gorcl & 0x80000000) == 0))
5188 /* Is this a broadcast or multicast? Check broadcast first,
5189 * since the test for a multicast frame will test positive on
5190 * a broadcast frame.
5192 if((mac_addr[0] == (uint8_t) 0xff) && (mac_addr[1] == (uint8_t) 0xff))
5193 /* Broadcast packet */
5195 else if(*mac_addr & 0x01)
5196 /* Multicast packet */
5199 if(frame_len == hw->max_frame_size) {
5200 /* In this case, the hardware has overcounted the number of
5207 /* Adjust the bin counters when the extra byte put the frame in the
5208 * wrong bin. Remember that the frame_len was adjusted above.
5210 if(frame_len == 64) {
5213 } else if(frame_len == 127) {
5216 } else if(frame_len == 255) {
5219 } else if(frame_len == 511) {
5222 } else if(frame_len == 1023) {
5225 } else if(frame_len == 1522) {
5230 /******************************************************************************
5231 * Gets the current PCI bus type, speed, and width of the hardware
5233 * hw - Struct containing variables accessed by shared code
5234 *****************************************************************************/
5236 e1000_get_bus_info(struct e1000_hw *hw)
5240 switch (hw->mac_type) {
5241 case e1000_82542_rev2_0:
5242 case e1000_82542_rev2_1:
5243 hw->bus_type = e1000_bus_type_unknown;
5244 hw->bus_speed = e1000_bus_speed_unknown;
5245 hw->bus_width = e1000_bus_width_unknown;
5250 hw->bus_type = e1000_bus_type_pci_express;
5251 hw->bus_speed = e1000_bus_speed_2500;
5252 hw->bus_width = e1000_bus_width_pciex_4;
5255 status = E1000_READ_REG(hw, STATUS);
5256 hw->bus_type = (status & E1000_STATUS_PCIX_MODE) ?
5257 e1000_bus_type_pcix : e1000_bus_type_pci;
5259 if(hw->device_id == E1000_DEV_ID_82546EB_QUAD_COPPER) {
5260 hw->bus_speed = (hw->bus_type == e1000_bus_type_pci) ?
5261 e1000_bus_speed_66 : e1000_bus_speed_120;
5262 } else if(hw->bus_type == e1000_bus_type_pci) {
5263 hw->bus_speed = (status & E1000_STATUS_PCI66) ?
5264 e1000_bus_speed_66 : e1000_bus_speed_33;
5266 switch (status & E1000_STATUS_PCIX_SPEED) {
5267 case E1000_STATUS_PCIX_SPEED_66:
5268 hw->bus_speed = e1000_bus_speed_66;
5270 case E1000_STATUS_PCIX_SPEED_100:
5271 hw->bus_speed = e1000_bus_speed_100;
5273 case E1000_STATUS_PCIX_SPEED_133:
5274 hw->bus_speed = e1000_bus_speed_133;
5277 hw->bus_speed = e1000_bus_speed_reserved;
5281 hw->bus_width = (status & E1000_STATUS_BUS64) ?
5282 e1000_bus_width_64 : e1000_bus_width_32;
5286 /******************************************************************************
5287 * Reads a value from one of the devices registers using port I/O (as opposed
5288 * memory mapped I/O). Only 82544 and newer devices support port I/O.
5290 * hw - Struct containing variables accessed by shared code
5291 * offset - offset to read from
5292 *****************************************************************************/
5294 e1000_read_reg_io(struct e1000_hw *hw,
5297 unsigned long io_addr = hw->io_base;
5298 unsigned long io_data = hw->io_base + 4;
5300 e1000_io_write(hw, io_addr, offset);
5301 return e1000_io_read(hw, io_data);
5304 /******************************************************************************
5305 * Writes a value to one of the devices registers using port I/O (as opposed to
5306 * memory mapped I/O). Only 82544 and newer devices support port I/O.
5308 * hw - Struct containing variables accessed by shared code
5309 * offset - offset to write to
5310 * value - value to write
5311 *****************************************************************************/
5313 e1000_write_reg_io(struct e1000_hw *hw,
5317 unsigned long io_addr = hw->io_base;
5318 unsigned long io_data = hw->io_base + 4;
5320 e1000_io_write(hw, io_addr, offset);
5321 e1000_io_write(hw, io_data, value);
5325 /******************************************************************************
5326 * Estimates the cable length.
5328 * hw - Struct containing variables accessed by shared code
5329 * min_length - The estimated minimum length
5330 * max_length - The estimated maximum length
5332 * returns: - E1000_ERR_XXX
5335 * This function always returns a ranged length (minimum & maximum).
5336 * So for M88 phy's, this function interprets the one value returned from the
5337 * register to the minimum and maximum range.
5338 * For IGP phy's, the function calculates the range by the AGC registers.
5339 *****************************************************************************/
5341 e1000_get_cable_length(struct e1000_hw *hw,
5342 uint16_t *min_length,
5343 uint16_t *max_length)
5346 uint16_t agc_value = 0;
5347 uint16_t cur_agc, min_agc = IGP01E1000_AGC_LENGTH_TABLE_SIZE;
5348 uint16_t max_agc = 0;
5349 uint16_t i, phy_data;
5350 uint16_t cable_length;
5352 DEBUGFUNC("e1000_get_cable_length");
5354 *min_length = *max_length = 0;
5356 /* Use old method for Phy older than IGP */
5357 if(hw->phy_type == e1000_phy_m88) {
5359 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS,
5363 cable_length = (phy_data & M88E1000_PSSR_CABLE_LENGTH) >>
5364 M88E1000_PSSR_CABLE_LENGTH_SHIFT;
5366 /* Convert the enum value to ranged values */
5367 switch (cable_length) {
5368 case e1000_cable_length_50:
5370 *max_length = e1000_igp_cable_length_50;
5372 case e1000_cable_length_50_80:
5373 *min_length = e1000_igp_cable_length_50;
5374 *max_length = e1000_igp_cable_length_80;
5376 case e1000_cable_length_80_110:
5377 *min_length = e1000_igp_cable_length_80;
5378 *max_length = e1000_igp_cable_length_110;
5380 case e1000_cable_length_110_140:
5381 *min_length = e1000_igp_cable_length_110;
5382 *max_length = e1000_igp_cable_length_140;
5384 case e1000_cable_length_140:
5385 *min_length = e1000_igp_cable_length_140;
5386 *max_length = e1000_igp_cable_length_170;
5389 return -E1000_ERR_PHY;
5392 } else if(hw->phy_type == e1000_phy_igp) { /* For IGP PHY */
5393 uint16_t agc_reg_array[IGP01E1000_PHY_CHANNEL_NUM] =
5394 {IGP01E1000_PHY_AGC_A,
5395 IGP01E1000_PHY_AGC_B,
5396 IGP01E1000_PHY_AGC_C,
5397 IGP01E1000_PHY_AGC_D};
5398 /* Read the AGC registers for all channels */
5399 for(i = 0; i < IGP01E1000_PHY_CHANNEL_NUM; i++) {
5401 ret_val = e1000_read_phy_reg(hw, agc_reg_array[i], &phy_data);
5405 cur_agc = phy_data >> IGP01E1000_AGC_LENGTH_SHIFT;
5407 /* Array bound check. */
5408 if((cur_agc >= IGP01E1000_AGC_LENGTH_TABLE_SIZE - 1) ||
5410 return -E1000_ERR_PHY;
5412 agc_value += cur_agc;
5414 /* Update minimal AGC value. */
5415 if(min_agc > cur_agc)
5419 /* Remove the minimal AGC result for length < 50m */
5420 if(agc_value < IGP01E1000_PHY_CHANNEL_NUM * e1000_igp_cable_length_50) {
5421 agc_value -= min_agc;
5423 /* Get the average length of the remaining 3 channels */
5424 agc_value /= (IGP01E1000_PHY_CHANNEL_NUM - 1);
5426 /* Get the average length of all the 4 channels. */
5427 agc_value /= IGP01E1000_PHY_CHANNEL_NUM;
5430 /* Set the range of the calculated length. */
5431 *min_length = ((e1000_igp_cable_length_table[agc_value] -
5432 IGP01E1000_AGC_RANGE) > 0) ?
5433 (e1000_igp_cable_length_table[agc_value] -
5434 IGP01E1000_AGC_RANGE) : 0;
5435 *max_length = e1000_igp_cable_length_table[agc_value] +
5436 IGP01E1000_AGC_RANGE;
5437 } else if (hw->phy_type == e1000_phy_igp_2) {
5438 uint16_t agc_reg_array[IGP02E1000_PHY_CHANNEL_NUM] =
5439 {IGP02E1000_PHY_AGC_A,
5440 IGP02E1000_PHY_AGC_B,
5441 IGP02E1000_PHY_AGC_C,
5442 IGP02E1000_PHY_AGC_D};
5443 /* Read the AGC registers for all channels */
5444 for (i = 0; i < IGP02E1000_PHY_CHANNEL_NUM; i++) {
5445 ret_val = e1000_read_phy_reg(hw, agc_reg_array[i], &phy_data);
5449 /* Getting bits 15:9, which represent the combination of course and
5450 * fine gain values. The result is a number that can be put into
5451 * the lookup table to obtain the approximate cable length. */
5452 cur_agc = (phy_data >> IGP02E1000_AGC_LENGTH_SHIFT) &
5453 IGP02E1000_AGC_LENGTH_MASK;
5455 /* Remove min & max AGC values from calculation. */
5456 if (e1000_igp_2_cable_length_table[min_agc] > e1000_igp_2_cable_length_table[cur_agc])
5458 if (e1000_igp_2_cable_length_table[max_agc] < e1000_igp_2_cable_length_table[cur_agc])
5461 agc_value += e1000_igp_2_cable_length_table[cur_agc];
5464 agc_value -= (e1000_igp_2_cable_length_table[min_agc] + e1000_igp_2_cable_length_table[max_agc]);
5465 agc_value /= (IGP02E1000_PHY_CHANNEL_NUM - 2);
5467 /* Calculate cable length with the error range of +/- 10 meters. */
5468 *min_length = ((agc_value - IGP02E1000_AGC_RANGE) > 0) ?
5469 (agc_value - IGP02E1000_AGC_RANGE) : 0;
5470 *max_length = agc_value + IGP02E1000_AGC_RANGE;
5473 return E1000_SUCCESS;
5476 /******************************************************************************
5477 * Check the cable polarity
5479 * hw - Struct containing variables accessed by shared code
5480 * polarity - output parameter : 0 - Polarity is not reversed
5481 * 1 - Polarity is reversed.
5483 * returns: - E1000_ERR_XXX
5486 * For phy's older then IGP, this function simply reads the polarity bit in the
5487 * Phy Status register. For IGP phy's, this bit is valid only if link speed is
5488 * 10 Mbps. If the link speed is 100 Mbps there is no polarity so this bit will
5489 * return 0. If the link speed is 1000 Mbps the polarity status is in the
5490 * IGP01E1000_PHY_PCS_INIT_REG.
5491 *****************************************************************************/
5493 e1000_check_polarity(struct e1000_hw *hw,
5499 DEBUGFUNC("e1000_check_polarity");
5501 if(hw->phy_type == e1000_phy_m88) {
5502 /* return the Polarity bit in the Status register. */
5503 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS,
5507 *polarity = (phy_data & M88E1000_PSSR_REV_POLARITY) >>
5508 M88E1000_PSSR_REV_POLARITY_SHIFT;
5509 } else if(hw->phy_type == e1000_phy_igp ||
5510 hw->phy_type == e1000_phy_igp_2) {
5511 /* Read the Status register to check the speed */
5512 ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_STATUS,
5517 /* If speed is 1000 Mbps, must read the IGP01E1000_PHY_PCS_INIT_REG to
5518 * find the polarity status */
5519 if((phy_data & IGP01E1000_PSSR_SPEED_MASK) ==
5520 IGP01E1000_PSSR_SPEED_1000MBPS) {
5522 /* Read the GIG initialization PCS register (0x00B4) */
5523 ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PCS_INIT_REG,
5528 /* Check the polarity bits */
5529 *polarity = (phy_data & IGP01E1000_PHY_POLARITY_MASK) ? 1 : 0;
5531 /* For 10 Mbps, read the polarity bit in the status register. (for
5532 * 100 Mbps this bit is always 0) */
5533 *polarity = phy_data & IGP01E1000_PSSR_POLARITY_REVERSED;
5536 return E1000_SUCCESS;
5539 /******************************************************************************
5540 * Check if Downshift occured
5542 * hw - Struct containing variables accessed by shared code
5543 * downshift - output parameter : 0 - No Downshift ocured.
5544 * 1 - Downshift ocured.
5546 * returns: - E1000_ERR_XXX
5549 * For phy's older then IGP, this function reads the Downshift bit in the Phy
5550 * Specific Status register. For IGP phy's, it reads the Downgrade bit in the
5551 * Link Health register. In IGP this bit is latched high, so the driver must
5552 * read it immediately after link is established.
5553 *****************************************************************************/
5555 e1000_check_downshift(struct e1000_hw *hw)
5560 DEBUGFUNC("e1000_check_downshift");
5562 if(hw->phy_type == e1000_phy_igp ||
5563 hw->phy_type == e1000_phy_igp_2) {
5564 ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_LINK_HEALTH,
5569 hw->speed_downgraded = (phy_data & IGP01E1000_PLHR_SS_DOWNGRADE) ? 1 : 0;
5570 } else if(hw->phy_type == e1000_phy_m88) {
5571 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS,
5576 hw->speed_downgraded = (phy_data & M88E1000_PSSR_DOWNSHIFT) >>
5577 M88E1000_PSSR_DOWNSHIFT_SHIFT;
5580 return E1000_SUCCESS;
5583 /*****************************************************************************
5585 * 82541_rev_2 & 82547_rev_2 have the capability to configure the DSP when a
5586 * gigabit link is achieved to improve link quality.
5588 * hw: Struct containing variables accessed by shared code
5590 * returns: - E1000_ERR_PHY if fail to read/write the PHY
5591 * E1000_SUCCESS at any other case.
5593 ****************************************************************************/
5596 e1000_config_dsp_after_link_change(struct e1000_hw *hw,
5600 uint16_t phy_data, phy_saved_data, speed, duplex, i;
5601 uint16_t dsp_reg_array[IGP01E1000_PHY_CHANNEL_NUM] =
5602 {IGP01E1000_PHY_AGC_PARAM_A,
5603 IGP01E1000_PHY_AGC_PARAM_B,
5604 IGP01E1000_PHY_AGC_PARAM_C,
5605 IGP01E1000_PHY_AGC_PARAM_D};
5606 uint16_t min_length, max_length;
5608 DEBUGFUNC("e1000_config_dsp_after_link_change");
5610 if(hw->phy_type != e1000_phy_igp)
5611 return E1000_SUCCESS;
5614 ret_val = e1000_get_speed_and_duplex(hw, &speed, &duplex);
5616 DEBUGOUT("Error getting link speed and duplex\n");
5620 if(speed == SPEED_1000) {
5622 e1000_get_cable_length(hw, &min_length, &max_length);
5624 if((hw->dsp_config_state == e1000_dsp_config_enabled) &&
5625 min_length >= e1000_igp_cable_length_50) {
5627 for(i = 0; i < IGP01E1000_PHY_CHANNEL_NUM; i++) {
5628 ret_val = e1000_read_phy_reg(hw, dsp_reg_array[i],
5633 phy_data &= ~IGP01E1000_PHY_EDAC_MU_INDEX;
5635 ret_val = e1000_write_phy_reg(hw, dsp_reg_array[i],
5640 hw->dsp_config_state = e1000_dsp_config_activated;
5643 if((hw->ffe_config_state == e1000_ffe_config_enabled) &&
5644 (min_length < e1000_igp_cable_length_50)) {
5646 uint16_t ffe_idle_err_timeout = FFE_IDLE_ERR_COUNT_TIMEOUT_20;
5647 uint32_t idle_errs = 0;
5649 /* clear previous idle error counts */
5650 ret_val = e1000_read_phy_reg(hw, PHY_1000T_STATUS,
5655 for(i = 0; i < ffe_idle_err_timeout; i++) {
5657 ret_val = e1000_read_phy_reg(hw, PHY_1000T_STATUS,
5662 idle_errs += (phy_data & SR_1000T_IDLE_ERROR_CNT);
5663 if(idle_errs > SR_1000T_PHY_EXCESSIVE_IDLE_ERR_COUNT) {
5664 hw->ffe_config_state = e1000_ffe_config_active;
5666 ret_val = e1000_write_phy_reg(hw,
5667 IGP01E1000_PHY_DSP_FFE,
5668 IGP01E1000_PHY_DSP_FFE_CM_CP);
5675 ffe_idle_err_timeout = FFE_IDLE_ERR_COUNT_TIMEOUT_100;
5680 if(hw->dsp_config_state == e1000_dsp_config_activated) {
5681 /* Save off the current value of register 0x2F5B to be restored at
5682 * the end of the routines. */
5683 ret_val = e1000_read_phy_reg(hw, 0x2F5B, &phy_saved_data);
5688 /* Disable the PHY transmitter */
5689 ret_val = e1000_write_phy_reg(hw, 0x2F5B, 0x0003);
5696 ret_val = e1000_write_phy_reg(hw, 0x0000,
5697 IGP01E1000_IEEE_FORCE_GIGA);
5700 for(i = 0; i < IGP01E1000_PHY_CHANNEL_NUM; i++) {
5701 ret_val = e1000_read_phy_reg(hw, dsp_reg_array[i], &phy_data);
5705 phy_data &= ~IGP01E1000_PHY_EDAC_MU_INDEX;
5706 phy_data |= IGP01E1000_PHY_EDAC_SIGN_EXT_9_BITS;
5708 ret_val = e1000_write_phy_reg(hw,dsp_reg_array[i], phy_data);
5713 ret_val = e1000_write_phy_reg(hw, 0x0000,
5714 IGP01E1000_IEEE_RESTART_AUTONEG);
5720 /* Now enable the transmitter */
5721 ret_val = e1000_write_phy_reg(hw, 0x2F5B, phy_saved_data);
5726 hw->dsp_config_state = e1000_dsp_config_enabled;
5729 if(hw->ffe_config_state == e1000_ffe_config_active) {
5730 /* Save off the current value of register 0x2F5B to be restored at
5731 * the end of the routines. */
5732 ret_val = e1000_read_phy_reg(hw, 0x2F5B, &phy_saved_data);
5737 /* Disable the PHY transmitter */
5738 ret_val = e1000_write_phy_reg(hw, 0x2F5B, 0x0003);
5745 ret_val = e1000_write_phy_reg(hw, 0x0000,
5746 IGP01E1000_IEEE_FORCE_GIGA);
5749 ret_val = e1000_write_phy_reg(hw, IGP01E1000_PHY_DSP_FFE,
5750 IGP01E1000_PHY_DSP_FFE_DEFAULT);
5754 ret_val = e1000_write_phy_reg(hw, 0x0000,
5755 IGP01E1000_IEEE_RESTART_AUTONEG);
5761 /* Now enable the transmitter */
5762 ret_val = e1000_write_phy_reg(hw, 0x2F5B, phy_saved_data);
5767 hw->ffe_config_state = e1000_ffe_config_enabled;
5770 return E1000_SUCCESS;
5773 /*****************************************************************************
5774 * Set PHY to class A mode
5775 * Assumes the following operations will follow to enable the new class mode.
5776 * 1. Do a PHY soft reset
5777 * 2. Restart auto-negotiation or force link.
5779 * hw - Struct containing variables accessed by shared code
5780 ****************************************************************************/
5782 e1000_set_phy_mode(struct e1000_hw *hw)
5785 uint16_t eeprom_data;
5787 DEBUGFUNC("e1000_set_phy_mode");
5789 if((hw->mac_type == e1000_82545_rev_3) &&
5790 (hw->media_type == e1000_media_type_copper)) {
5791 ret_val = e1000_read_eeprom(hw, EEPROM_PHY_CLASS_WORD, 1, &eeprom_data);
5796 if((eeprom_data != EEPROM_RESERVED_WORD) &&
5797 (eeprom_data & EEPROM_PHY_CLASS_A)) {
5798 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x000B);
5801 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, 0x8104);
5805 hw->phy_reset_disable = FALSE;
5809 return E1000_SUCCESS;
5812 /*****************************************************************************
5814 * This function sets the lplu state according to the active flag. When
5815 * activating lplu this function also disables smart speed and vise versa.
5816 * lplu will not be activated unless the device autonegotiation advertisment
5817 * meets standards of either 10 or 10/100 or 10/100/1000 at all duplexes.
5818 * hw: Struct containing variables accessed by shared code
5819 * active - true to enable lplu false to disable lplu.
5821 * returns: - E1000_ERR_PHY if fail to read/write the PHY
5822 * E1000_SUCCESS at any other case.
5824 ****************************************************************************/
5827 e1000_set_d3_lplu_state(struct e1000_hw *hw,
5832 DEBUGFUNC("e1000_set_d3_lplu_state");
5834 if(hw->phy_type != e1000_phy_igp && hw->phy_type != e1000_phy_igp_2)
5835 return E1000_SUCCESS;
5837 /* During driver activity LPLU should not be used or it will attain link
5838 * from the lowest speeds starting from 10Mbps. The capability is used for
5839 * Dx transitions and states */
5840 if(hw->mac_type == e1000_82541_rev_2 || hw->mac_type == e1000_82547_rev_2) {
5841 ret_val = e1000_read_phy_reg(hw, IGP01E1000_GMII_FIFO, &phy_data);
5845 ret_val = e1000_read_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT, &phy_data);
5851 if(hw->mac_type == e1000_82541_rev_2 ||
5852 hw->mac_type == e1000_82547_rev_2) {
5853 phy_data &= ~IGP01E1000_GMII_FLEX_SPD;
5854 ret_val = e1000_write_phy_reg(hw, IGP01E1000_GMII_FIFO, phy_data);
5858 phy_data &= ~IGP02E1000_PM_D3_LPLU;
5859 ret_val = e1000_write_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT,
5865 /* LPLU and SmartSpeed are mutually exclusive. LPLU is used during
5866 * Dx states where the power conservation is most important. During
5867 * driver activity we should enable SmartSpeed, so performance is
5869 if (hw->smart_speed == e1000_smart_speed_on) {
5870 ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
5875 phy_data |= IGP01E1000_PSCFR_SMART_SPEED;
5876 ret_val = e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
5880 } else if (hw->smart_speed == e1000_smart_speed_off) {
5881 ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
5886 phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
5887 ret_val = e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
5893 } else if((hw->autoneg_advertised == AUTONEG_ADVERTISE_SPEED_DEFAULT) ||
5894 (hw->autoneg_advertised == AUTONEG_ADVERTISE_10_ALL ) ||
5895 (hw->autoneg_advertised == AUTONEG_ADVERTISE_10_100_ALL)) {
5897 if(hw->mac_type == e1000_82541_rev_2 ||
5898 hw->mac_type == e1000_82547_rev_2) {
5899 phy_data |= IGP01E1000_GMII_FLEX_SPD;
5900 ret_val = e1000_write_phy_reg(hw, IGP01E1000_GMII_FIFO, phy_data);
5904 phy_data |= IGP02E1000_PM_D3_LPLU;
5905 ret_val = e1000_write_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT,
5911 /* When LPLU is enabled we should disable SmartSpeed */
5912 ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, &phy_data);
5916 phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
5917 ret_val = e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, phy_data);
5922 return E1000_SUCCESS;
5925 /*****************************************************************************
5927 * This function sets the lplu d0 state according to the active flag. When
5928 * activating lplu this function also disables smart speed and vise versa.
5929 * lplu will not be activated unless the device autonegotiation advertisment
5930 * meets standards of either 10 or 10/100 or 10/100/1000 at all duplexes.
5931 * hw: Struct containing variables accessed by shared code
5932 * active - true to enable lplu false to disable lplu.
5934 * returns: - E1000_ERR_PHY if fail to read/write the PHY
5935 * E1000_SUCCESS at any other case.
5937 ****************************************************************************/
5940 e1000_set_d0_lplu_state(struct e1000_hw *hw,
5945 DEBUGFUNC("e1000_set_d0_lplu_state");
5947 if(hw->mac_type <= e1000_82547_rev_2)
5948 return E1000_SUCCESS;
5950 ret_val = e1000_read_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT, &phy_data);
5955 phy_data &= ~IGP02E1000_PM_D0_LPLU;
5956 ret_val = e1000_write_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT, phy_data);
5960 /* LPLU and SmartSpeed are mutually exclusive. LPLU is used during
5961 * Dx states where the power conservation is most important. During
5962 * driver activity we should enable SmartSpeed, so performance is
5964 if (hw->smart_speed == e1000_smart_speed_on) {
5965 ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
5970 phy_data |= IGP01E1000_PSCFR_SMART_SPEED;
5971 ret_val = e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
5975 } else if (hw->smart_speed == e1000_smart_speed_off) {
5976 ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
5981 phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
5982 ret_val = e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
5991 phy_data |= IGP02E1000_PM_D0_LPLU;
5992 ret_val = e1000_write_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT, phy_data);
5996 /* When LPLU is enabled we should disable SmartSpeed */
5997 ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, &phy_data);
6001 phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
6002 ret_val = e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, phy_data);
6007 return E1000_SUCCESS;
6010 /******************************************************************************
6011 * Change VCO speed register to improve Bit Error Rate performance of SERDES.
6013 * hw - Struct containing variables accessed by shared code
6014 *****************************************************************************/
6016 e1000_set_vco_speed(struct e1000_hw *hw)
6019 uint16_t default_page = 0;
6022 DEBUGFUNC("e1000_set_vco_speed");
6024 switch(hw->mac_type) {
6025 case e1000_82545_rev_3:
6026 case e1000_82546_rev_3:
6029 return E1000_SUCCESS;
6032 /* Set PHY register 30, page 5, bit 8 to 0 */
6034 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, &default_page);
6038 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0005);
6042 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, &phy_data);
6046 phy_data &= ~M88E1000_PHY_VCO_REG_BIT8;
6047 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, phy_data);
6051 /* Set PHY register 30, page 4, bit 11 to 1 */
6053 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0004);
6057 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, &phy_data);
6061 phy_data |= M88E1000_PHY_VCO_REG_BIT11;
6062 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, phy_data);
6066 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, default_page);
6070 return E1000_SUCCESS;
6074 /*****************************************************************************
6075 * This function reads the cookie from ARC ram.
6077 * returns: - E1000_SUCCESS .
6078 ****************************************************************************/
6080 e1000_host_if_read_cookie(struct e1000_hw * hw, uint8_t *buffer)
6083 uint32_t offset = E1000_MNG_DHCP_COOKIE_OFFSET;
6084 uint8_t length = E1000_MNG_DHCP_COOKIE_LENGTH;
6086 length = (length >> 2);
6087 offset = (offset >> 2);
6089 for (i = 0; i < length; i++) {
6090 *((uint32_t *) buffer + i) =
6091 E1000_READ_REG_ARRAY_DWORD(hw, HOST_IF, offset + i);
6093 return E1000_SUCCESS;
6097 /*****************************************************************************
6098 * This function checks whether the HOST IF is enabled for command operaton
6099 * and also checks whether the previous command is completed.
6100 * It busy waits in case of previous command is not completed.
6102 * returns: - E1000_ERR_HOST_INTERFACE_COMMAND in case if is not ready or
6104 * - E1000_SUCCESS for success.
6105 ****************************************************************************/
6107 e1000_mng_enable_host_if(struct e1000_hw * hw)
6112 /* Check that the host interface is enabled. */
6113 hicr = E1000_READ_REG(hw, HICR);
6114 if ((hicr & E1000_HICR_EN) == 0) {
6115 DEBUGOUT("E1000_HOST_EN bit disabled.\n");
6116 return -E1000_ERR_HOST_INTERFACE_COMMAND;
6118 /* check the previous command is completed */
6119 for (i = 0; i < E1000_MNG_DHCP_COMMAND_TIMEOUT; i++) {
6120 hicr = E1000_READ_REG(hw, HICR);
6121 if (!(hicr & E1000_HICR_C))
6126 if (i == E1000_MNG_DHCP_COMMAND_TIMEOUT) {
6127 DEBUGOUT("Previous command timeout failed .\n");
6128 return -E1000_ERR_HOST_INTERFACE_COMMAND;
6130 return E1000_SUCCESS;
6133 /*****************************************************************************
6134 * This function writes the buffer content at the offset given on the host if.
6135 * It also does alignment considerations to do the writes in most efficient way.
6136 * Also fills up the sum of the buffer in *buffer parameter.
6138 * returns - E1000_SUCCESS for success.
6139 ****************************************************************************/
6141 e1000_mng_host_if_write(struct e1000_hw * hw, uint8_t *buffer,
6142 uint16_t length, uint16_t offset, uint8_t *sum)
6145 uint8_t *bufptr = buffer;
6147 uint16_t remaining, i, j, prev_bytes;
6149 /* sum = only sum of the data and it is not checksum */
6151 if (length == 0 || offset + length > E1000_HI_MAX_MNG_DATA_LENGTH) {
6152 return -E1000_ERR_PARAM;
6155 tmp = (uint8_t *)&data;
6156 prev_bytes = offset & 0x3;
6161 data = E1000_READ_REG_ARRAY_DWORD(hw, HOST_IF, offset);
6162 for (j = prev_bytes; j < sizeof(uint32_t); j++) {
6163 *(tmp + j) = *bufptr++;
6166 E1000_WRITE_REG_ARRAY_DWORD(hw, HOST_IF, offset, data);
6167 length -= j - prev_bytes;
6171 remaining = length & 0x3;
6172 length -= remaining;
6174 /* Calculate length in DWORDs */
6177 /* The device driver writes the relevant command block into the
6179 for (i = 0; i < length; i++) {
6180 for (j = 0; j < sizeof(uint32_t); j++) {
6181 *(tmp + j) = *bufptr++;
6185 E1000_WRITE_REG_ARRAY_DWORD(hw, HOST_IF, offset + i, data);
6188 for (j = 0; j < sizeof(uint32_t); j++) {
6190 *(tmp + j) = *bufptr++;
6196 E1000_WRITE_REG_ARRAY_DWORD(hw, HOST_IF, offset + i, data);
6199 return E1000_SUCCESS;
6203 /*****************************************************************************
6204 * This function writes the command header after does the checksum calculation.
6206 * returns - E1000_SUCCESS for success.
6207 ****************************************************************************/
6209 e1000_mng_write_cmd_header(struct e1000_hw * hw,
6210 struct e1000_host_mng_command_header * hdr)
6216 /* Write the whole command header structure which includes sum of
6219 uint16_t length = sizeof(struct e1000_host_mng_command_header);
6221 sum = hdr->checksum;
6224 buffer = (uint8_t *) hdr;
6229 hdr->checksum = 0 - sum;
6232 /* The device driver writes the relevant command block into the ram area. */
6233 for (i = 0; i < length; i++)
6234 E1000_WRITE_REG_ARRAY_DWORD(hw, HOST_IF, i, *((uint32_t *) hdr + i));
6236 return E1000_SUCCESS;
6240 /*****************************************************************************
6241 * This function indicates to ARC that a new command is pending which completes
6242 * one write operation by the driver.
6244 * returns - E1000_SUCCESS for success.
6245 ****************************************************************************/
6247 e1000_mng_write_commit(
6248 struct e1000_hw * hw)
6252 hicr = E1000_READ_REG(hw, HICR);
6253 /* Setting this bit tells the ARC that a new command is pending. */
6254 E1000_WRITE_REG(hw, HICR, hicr | E1000_HICR_C);
6256 return E1000_SUCCESS;
6260 /*****************************************************************************
6261 * This function checks the mode of the firmware.
6263 * returns - TRUE when the mode is IAMT or FALSE.
6264 ****************************************************************************/
6266 e1000_check_mng_mode(
6267 struct e1000_hw *hw)
6271 fwsm = E1000_READ_REG(hw, FWSM);
6273 if((fwsm & E1000_FWSM_MODE_MASK) ==
6274 (E1000_MNG_IAMT_MODE << E1000_FWSM_MODE_SHIFT))
6281 /*****************************************************************************
6282 * This function writes the dhcp info .
6283 ****************************************************************************/
6285 e1000_mng_write_dhcp_info(struct e1000_hw * hw, uint8_t *buffer,
6289 struct e1000_host_mng_command_header hdr;
6291 hdr.command_id = E1000_MNG_DHCP_TX_PAYLOAD_CMD;
6292 hdr.command_length = length;
6297 ret_val = e1000_mng_enable_host_if(hw);
6298 if (ret_val == E1000_SUCCESS) {
6299 ret_val = e1000_mng_host_if_write(hw, buffer, length, sizeof(hdr),
6301 if (ret_val == E1000_SUCCESS) {
6302 ret_val = e1000_mng_write_cmd_header(hw, &hdr);
6303 if (ret_val == E1000_SUCCESS)
6304 ret_val = e1000_mng_write_commit(hw);
6311 /*****************************************************************************
6312 * This function calculates the checksum.
6314 * returns - checksum of buffer contents.
6315 ****************************************************************************/
6317 e1000_calculate_mng_checksum(char *buffer, uint32_t length)
6325 for (i=0; i < length; i++)
6328 return (uint8_t) (0 - sum);
6331 /*****************************************************************************
6332 * This function checks whether tx pkt filtering needs to be enabled or not.
6334 * returns - TRUE for packet filtering or FALSE.
6335 ****************************************************************************/
6337 e1000_enable_tx_pkt_filtering(struct e1000_hw *hw)
6339 /* called in init as well as watchdog timer functions */
6341 int32_t ret_val, checksum;
6342 boolean_t tx_filter = FALSE;
6343 struct e1000_host_mng_dhcp_cookie *hdr = &(hw->mng_cookie);
6344 uint8_t *buffer = (uint8_t *) &(hw->mng_cookie);
6346 if (e1000_check_mng_mode(hw)) {
6347 ret_val = e1000_mng_enable_host_if(hw);
6348 if (ret_val == E1000_SUCCESS) {
6349 ret_val = e1000_host_if_read_cookie(hw, buffer);
6350 if (ret_val == E1000_SUCCESS) {
6351 checksum = hdr->checksum;
6353 if ((hdr->signature == E1000_IAMT_SIGNATURE) &&
6354 checksum == e1000_calculate_mng_checksum((char *)buffer,
6355 E1000_MNG_DHCP_COOKIE_LENGTH)) {
6357 E1000_MNG_DHCP_COOKIE_STATUS_PARSING_SUPPORT)
6366 hw->tx_pkt_filtering = tx_filter;
6370 /******************************************************************************
6371 * Verifies the hardware needs to allow ARPs to be processed by the host
6373 * hw - Struct containing variables accessed by shared code
6375 * returns: - TRUE/FALSE
6377 *****************************************************************************/
6379 e1000_enable_mng_pass_thru(struct e1000_hw *hw)
6382 uint32_t fwsm, factps;
6384 if (hw->asf_firmware_present) {
6385 manc = E1000_READ_REG(hw, MANC);
6387 if (!(manc & E1000_MANC_RCV_TCO_EN) ||
6388 !(manc & E1000_MANC_EN_MAC_ADDR_FILTER))
6390 if (e1000_arc_subsystem_valid(hw) == TRUE) {
6391 fwsm = E1000_READ_REG(hw, FWSM);
6392 factps = E1000_READ_REG(hw, FACTPS);
6394 if (((fwsm & E1000_FWSM_MODE_MASK) ==
6395 (e1000_mng_mode_pt << E1000_FWSM_MODE_SHIFT)) &&
6396 (factps & E1000_FACTPS_MNGCG))
6399 if ((manc & E1000_MANC_SMBUS_EN) && !(manc & E1000_MANC_ASF_EN))
6406 e1000_polarity_reversal_workaround(struct e1000_hw *hw)
6409 uint16_t mii_status_reg;
6412 /* Polarity reversal workaround for forced 10F/10H links. */
6414 /* Disable the transmitter on the PHY */
6416 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0019);
6419 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, 0xFFFF);
6423 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0000);
6427 /* This loop will early-out if the NO link condition has been met. */
6428 for(i = PHY_FORCE_TIME; i > 0; i--) {
6429 /* Read the MII Status Register and wait for Link Status bit
6433 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
6437 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
6441 if((mii_status_reg & ~MII_SR_LINK_STATUS) == 0) break;
6442 msec_delay_irq(100);
6445 /* Recommended delay time after link has been lost */
6446 msec_delay_irq(1000);
6448 /* Now we will re-enable th transmitter on the PHY */
6450 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0019);
6454 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, 0xFFF0);
6458 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, 0xFF00);
6462 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, 0x0000);
6466 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0000);
6470 /* This loop will early-out if the link condition has been met. */
6471 for(i = PHY_FORCE_TIME; i > 0; i--) {
6472 /* Read the MII Status Register and wait for Link Status bit
6476 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
6480 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg);
6484 if(mii_status_reg & MII_SR_LINK_STATUS) break;
6485 msec_delay_irq(100);
6487 return E1000_SUCCESS;
6490 /***************************************************************************
6492 * Disables PCI-Express master access.
6494 * hw: Struct containing variables accessed by shared code
6498 ***************************************************************************/
6500 e1000_set_pci_express_master_disable(struct e1000_hw *hw)
6504 DEBUGFUNC("e1000_set_pci_express_master_disable");
6506 if (hw->bus_type != e1000_bus_type_pci_express)
6509 ctrl = E1000_READ_REG(hw, CTRL);
6510 ctrl |= E1000_CTRL_GIO_MASTER_DISABLE;
6511 E1000_WRITE_REG(hw, CTRL, ctrl);
6514 /***************************************************************************
6516 * Enables PCI-Express master access.
6518 * hw: Struct containing variables accessed by shared code
6522 ***************************************************************************/
6524 e1000_enable_pciex_master(struct e1000_hw *hw)
6528 DEBUGFUNC("e1000_enable_pciex_master");
6530 if (hw->bus_type != e1000_bus_type_pci_express)
6533 ctrl = E1000_READ_REG(hw, CTRL);
6534 ctrl &= ~E1000_CTRL_GIO_MASTER_DISABLE;
6535 E1000_WRITE_REG(hw, CTRL, ctrl);
6538 /*******************************************************************************
6540 * Disables PCI-Express master access and verifies there are no pending requests
6542 * hw: Struct containing variables accessed by shared code
6544 * returns: - E1000_ERR_MASTER_REQUESTS_PENDING if master disable bit hasn't
6545 * caused the master requests to be disabled.
6546 * E1000_SUCCESS master requests disabled.
6548 ******************************************************************************/
6550 e1000_disable_pciex_master(struct e1000_hw *hw)
6552 int32_t timeout = MASTER_DISABLE_TIMEOUT; /* 80ms */
6554 DEBUGFUNC("e1000_disable_pciex_master");
6556 if (hw->bus_type != e1000_bus_type_pci_express)
6557 return E1000_SUCCESS;
6559 e1000_set_pci_express_master_disable(hw);
6562 if(!(E1000_READ_REG(hw, STATUS) & E1000_STATUS_GIO_MASTER_ENABLE))
6570 DEBUGOUT("Master requests are pending.\n");
6571 return -E1000_ERR_MASTER_REQUESTS_PENDING;
6574 return E1000_SUCCESS;
6577 /*******************************************************************************
6579 * Check for EEPROM Auto Read bit done.
6581 * hw: Struct containing variables accessed by shared code
6583 * returns: - E1000_ERR_RESET if fail to reset MAC
6584 * E1000_SUCCESS at any other case.
6586 ******************************************************************************/
6588 e1000_get_auto_rd_done(struct e1000_hw *hw)
6590 int32_t timeout = AUTO_READ_DONE_TIMEOUT;
6592 DEBUGFUNC("e1000_get_auto_rd_done");
6594 switch (hw->mac_type) {
6602 if (E1000_READ_REG(hw, EECD) & E1000_EECD_AUTO_RD) break;
6608 DEBUGOUT("Auto read by HW from EEPROM has not completed.\n");
6609 return -E1000_ERR_RESET;
6614 return E1000_SUCCESS;
6617 /***************************************************************************
6618 * Checks if the PHY configuration is done
6620 * hw: Struct containing variables accessed by shared code
6622 * returns: - E1000_ERR_RESET if fail to reset MAC
6623 * E1000_SUCCESS at any other case.
6625 ***************************************************************************/
6627 e1000_get_phy_cfg_done(struct e1000_hw *hw)
6629 int32_t timeout = PHY_CFG_TIMEOUT;
6630 uint32_t cfg_mask = E1000_EEPROM_CFG_DONE;
6632 DEBUGFUNC("e1000_get_phy_cfg_done");
6634 switch (hw->mac_type) {
6641 if (E1000_READ_REG(hw, EEMNGCTL) & cfg_mask)
6649 DEBUGOUT("MNG configuration cycle has not completed.\n");
6650 return -E1000_ERR_RESET;
6655 return E1000_SUCCESS;
6658 /***************************************************************************
6660 * Using the combination of SMBI and SWESMBI semaphore bits when resetting
6661 * adapter or Eeprom access.
6663 * hw: Struct containing variables accessed by shared code
6665 * returns: - E1000_ERR_EEPROM if fail to access EEPROM.
6666 * E1000_SUCCESS at any other case.
6668 ***************************************************************************/
6670 e1000_get_hw_eeprom_semaphore(struct e1000_hw *hw)
6675 DEBUGFUNC("e1000_get_hw_eeprom_semaphore");
6677 if(!hw->eeprom_semaphore_present)
6678 return E1000_SUCCESS;
6681 /* Get the FW semaphore. */
6682 timeout = hw->eeprom.word_size + 1;
6684 swsm = E1000_READ_REG(hw, SWSM);
6685 swsm |= E1000_SWSM_SWESMBI;
6686 E1000_WRITE_REG(hw, SWSM, swsm);
6687 /* if we managed to set the bit we got the semaphore. */
6688 swsm = E1000_READ_REG(hw, SWSM);
6689 if(swsm & E1000_SWSM_SWESMBI)
6697 /* Release semaphores */
6698 e1000_put_hw_eeprom_semaphore(hw);
6699 DEBUGOUT("Driver can't access the Eeprom - SWESMBI bit is set.\n");
6700 return -E1000_ERR_EEPROM;
6703 return E1000_SUCCESS;
6706 /***************************************************************************
6707 * This function clears HW semaphore bits.
6709 * hw: Struct containing variables accessed by shared code
6713 ***************************************************************************/
6715 e1000_put_hw_eeprom_semaphore(struct e1000_hw *hw)
6719 DEBUGFUNC("e1000_put_hw_eeprom_semaphore");
6721 if(!hw->eeprom_semaphore_present)
6724 swsm = E1000_READ_REG(hw, SWSM);
6725 swsm &= ~(E1000_SWSM_SWESMBI);
6726 E1000_WRITE_REG(hw, SWSM, swsm);
6729 /******************************************************************************
6730 * Checks if PHY reset is blocked due to SOL/IDER session, for example.
6731 * Returning E1000_BLK_PHY_RESET isn't necessarily an error. But it's up to
6732 * the caller to figure out how to deal with it.
6734 * hw - Struct containing variables accessed by shared code
6736 * returns: - E1000_BLK_PHY_RESET
6739 *****************************************************************************/
6741 e1000_check_phy_reset_block(struct e1000_hw *hw)
6744 if(hw->mac_type > e1000_82547_rev_2)
6745 manc = E1000_READ_REG(hw, MANC);
6746 return (manc & E1000_MANC_BLK_PHY_RST_ON_IDE) ?
6747 E1000_BLK_PHY_RESET : E1000_SUCCESS;
6751 e1000_arc_subsystem_valid(struct e1000_hw *hw)
6755 /* On 8257x silicon, registers in the range of 0x8800 - 0x8FFC
6756 * may not be provided a DMA clock when no manageability features are
6757 * enabled. We do not want to perform any reads/writes to these registers
6758 * if this is the case. We read FWSM to determine the manageability mode.
6760 switch (hw->mac_type) {
6764 fwsm = E1000_READ_REG(hw, FWSM);
6765 if((fwsm & E1000_FWSM_MODE_MASK) != 0)