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Revert "Merge patch series "arm: dts: am62-beagleplay: Fix Beagleplay Ethernet""
[thirdparty/u-boot.git] / drivers / net / e1000.c
CommitLineData
83d290c5 1// SPDX-License-Identifier: GPL-2.0+
682011ff 2/**************************************************************************
ac3315c2 3Intel Pro 1000 for ppcboot/das-u-boot
682011ff
WD		 4Drivers are port from Intel's Linux driver e1000-4.3.15
5and from Etherboot pro 1000 driver by mrakes at vivato dot net
6tested on both gig copper and gig fiber boards
7***************************************************************************/
8/*******************************************************************************
9
8bde7f77 10
682011ff 11 Copyright(c) 1999 - 2002 Intel Corporation. All rights reserved.
8bde7f77 12
8bde7f77 13
682011ff
WD		 14 Contact Information:
15 Linux NICS <linux.nics@intel.com>
16 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
17
18*******************************************************************************/
19/*
20 * Copyright (C) Archway Digital Solutions.
21 *
22 * written by Chrsitopher Li <cli at arcyway dot com> or <chrisl at gnuchina dot org>
23 * 2/9/2002
24 *
25 * Copyright (C) Linux Networx.
26 * Massive upgrade to work with the new intel gigabit NICs.
27 * <ebiederman at lnxi dot com>
2c2668f9
RZ		 28 *
29 * Copyright 2011 Freescale Semiconductor, Inc.
682011ff
WD		 30 */
31
d678a59d 32#include <common.h>
09140113 33#include <command.h>
1eb69ae4 34#include <cpu_func.h>
c6d80a15 35#include <dm.h>
5c5e707a 36#include <errno.h>
f7ae49fc 37#include <log.h>
336d4615 38#include <malloc.h>
cf92e05c 39#include <memalign.h>
90526e9f 40#include <net.h>
5c5e707a 41#include <pci.h>
c05ed00a 42#include <linux/delay.h>
682011ff 43#include "e1000.h"
90526e9f 44#include <asm/cache.h>
682011ff 45
682011ff
WD		 46#define TOUT_LOOP 100000
47
9ea005fb
RZ		 48#define E1000_DEFAULT_PCI_PBA 0x00000030
49#define E1000_DEFAULT_PCIE_PBA 0x000a0026
682011ff
WD		 50
51/* NIC specific static variables go here */
52
873e8e01
MV		 53/* Intel i210 needs the DMA descriptor rings aligned to 128b */
54#define E1000_BUFFER_ALIGN 128
682011ff 55
c6d80a15
SG		 56/*
57 * TODO(sjg@chromium.org): Even with driver model we share these buffers.
58 * Concurrent receiving on multiple active Ethernet devices will not work.
59 * Normally U-Boot does not support this anyway. To fix it in this driver,
60 * move these buffers and the tx/rx pointers to struct e1000_hw.
61 */
873e8e01
MV		 62DEFINE_ALIGN_BUFFER(struct e1000_tx_desc, tx_base, 16, E1000_BUFFER_ALIGN);
63DEFINE_ALIGN_BUFFER(struct e1000_rx_desc, rx_base, 16, E1000_BUFFER_ALIGN);
64DEFINE_ALIGN_BUFFER(unsigned char, packet, 4096, E1000_BUFFER_ALIGN);
682011ff
WD		 65
66static int tx_tail;
67static int rx_tail, rx_last;
c6d80a15 68static int num_cards; /* Number of E1000 devices seen so far */
682011ff 69
d60626f8 70static struct pci_device_id e1000_supported[] = {
5c5e707a
SG		 71 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82542) },
72 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82543GC_FIBER) },
73 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82543GC_COPPER) },
74 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82544EI_COPPER) },
75 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82544EI_FIBER) },
76 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82544GC_COPPER) },
77 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82544GC_LOM) },
78 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82540EM) },
79 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82545EM_COPPER) },
80 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82545GM_COPPER) },
81 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82546EB_COPPER) },
82 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82545EM_FIBER) },
83 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82546EB_FIBER) },
84 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82546GB_COPPER) },
85 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82540EM_LOM) },
86 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82541ER) },
87 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82541GI_LF) },
aa070789 88 /* E1000 PCIe card */
5c5e707a
SG		 89 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_COPPER) },
90 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_FIBER) },
91 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_SERDES) },
92 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_QUAD_COPPER) },
93 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571PT_QUAD_COPPER) },
94 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_QUAD_FIBER) },
95 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_QUAD_COPPER_LOWPROFILE) },
96 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_SERDES_DUAL) },
97 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_SERDES_QUAD) },
98 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82572EI_COPPER) },
99 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82572EI_FIBER) },
100 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82572EI_SERDES) },
101 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82572EI) },
102 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82573E) },
103 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82573E_IAMT) },
104 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82573L) },
105 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82574L) },
106 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82546GB_QUAD_COPPER_KSP3) },
107 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80003ES2LAN_COPPER_DPT) },
108 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80003ES2LAN_SERDES_DPT) },
109 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80003ES2LAN_COPPER_SPT) },
110 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80003ES2LAN_SERDES_SPT) },
111 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_I210_UNPROGRAMMED) },
112 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_I211_UNPROGRAMMED) },
113 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_I210_COPPER) },
114 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_I211_COPPER) },
115 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_I210_COPPER_FLASHLESS) },
116 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_I210_SERDES) },
117 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_I210_SERDES_FLASHLESS) },
118 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_I210_1000BASEKX) },
85d44e42
MA		 119 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_I225_UNPROGRAMMED) },
120 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_I225_IT) },
95186063 121
1bc43437 122 {}
682011ff
WD		 123};
124
125/* Function forward declarations */
5c5e707a
SG		 126static int e1000_setup_link(struct e1000_hw *hw);
127static int e1000_setup_fiber_link(struct e1000_hw *hw);
128static int e1000_setup_copper_link(struct e1000_hw *hw);
682011ff
WD		 129static int e1000_phy_setup_autoneg(struct e1000_hw *hw);
130static void e1000_config_collision_dist(struct e1000_hw *hw);
131static int e1000_config_mac_to_phy(struct e1000_hw *hw);
132static int e1000_config_fc_after_link_up(struct e1000_hw *hw);
5c5e707a 133static int e1000_check_for_link(struct e1000_hw *hw);
682011ff 134static int e1000_wait_autoneg(struct e1000_hw *hw);
aa070789 135static int e1000_get_speed_and_duplex(struct e1000_hw *hw, uint16_t * speed,
682011ff
WD		 136 uint16_t * duplex);
137static int e1000_read_phy_reg(struct e1000_hw *hw, uint32_t reg_addr,
138 uint16_t * phy_data);
139static int e1000_write_phy_reg(struct e1000_hw *hw, uint32_t reg_addr,
140 uint16_t phy_data);
aa070789 141static int32_t e1000_phy_hw_reset(struct e1000_hw *hw);
682011ff
WD		 142static int e1000_phy_reset(struct e1000_hw *hw);
143static int e1000_detect_gig_phy(struct e1000_hw *hw);
aa070789
RZ		 144static void e1000_set_media_type(struct e1000_hw *hw);
145
146static int32_t e1000_swfw_sync_acquire(struct e1000_hw *hw, uint16_t mask);
7e2d991d 147static void e1000_swfw_sync_release(struct e1000_hw *hw, uint16_t mask);
aa070789 148static int32_t e1000_check_phy_reset_block(struct e1000_hw *hw);
682011ff 149
8712adfd
RI		 150#ifndef CONFIG_E1000_NO_NVM
151static void e1000_put_hw_eeprom_semaphore(struct e1000_hw *hw);
f1bcad22 152static int32_t e1000_get_hw_eeprom_semaphore(struct e1000_hw *hw);
ecbd2078
RZ		 153static int32_t e1000_read_eeprom(struct e1000_hw *hw, uint16_t offset,
154 uint16_t words,
155 uint16_t *data);
682011ff
WD		 156/******************************************************************************
157 * Raises the EEPROM's clock input.
158 *
159 * hw - Struct containing variables accessed by shared code
160 * eecd - EECD's current value
161 *****************************************************************************/
2326a94d 162void e1000_raise_ee_clk(struct e1000_hw *hw, uint32_t * eecd)
682011ff
WD		 163{
164 /* Raise the clock input to the EEPROM (by setting the SK bit), and then
165 * wait 50 microseconds.
166 */
167 *eecd = *eecd | E1000_EECD_SK;
168 E1000_WRITE_REG(hw, EECD, *eecd);
169 E1000_WRITE_FLUSH(hw);
170 udelay(50);
171}
172
173/******************************************************************************
174 * Lowers the EEPROM's clock input.
175 *
8bde7f77 176 * hw - Struct containing variables accessed by shared code
682011ff
WD		 177 * eecd - EECD's current value
178 *****************************************************************************/
2326a94d 179void e1000_lower_ee_clk(struct e1000_hw *hw, uint32_t * eecd)
682011ff 180{
8bde7f77
WD		 181 /* Lower the clock input to the EEPROM (by clearing the SK bit), and then
182 * wait 50 microseconds.
682011ff
WD		 183 */
184 *eecd = *eecd & ~E1000_EECD_SK;
185 E1000_WRITE_REG(hw, EECD, *eecd);
186 E1000_WRITE_FLUSH(hw);
187 udelay(50);
188}
189
190/******************************************************************************
191 * Shift data bits out to the EEPROM.
192 *
193 * hw - Struct containing variables accessed by shared code
194 * data - data to send to the EEPROM
195 * count - number of bits to shift out
196 *****************************************************************************/
197static void
198e1000_shift_out_ee_bits(struct e1000_hw *hw, uint16_t data, uint16_t count)
199{
200 uint32_t eecd;
201 uint32_t mask;
202
203 /* We need to shift "count" bits out to the EEPROM. So, value in the
204 * "data" parameter will be shifted out to the EEPROM one bit at a time.
8bde7f77 205 * In order to do this, "data" must be broken down into bits.
682011ff
WD		 206 */
207 mask = 0x01 << (count - 1);
208 eecd = E1000_READ_REG(hw, EECD);
209 eecd &= ~(E1000_EECD_DO | E1000_EECD_DI);
210 do {
211 /* A "1" is shifted out to the EEPROM by setting bit "DI" to a "1",
212 * and then raising and then lowering the clock (the SK bit controls
213 * the clock input to the EEPROM). A "0" is shifted out to the EEPROM
214 * by setting "DI" to "0" and then raising and then lowering the clock.
215 */
216 eecd &= ~E1000_EECD_DI;
217
218 if (data & mask)
219 eecd |= E1000_EECD_DI;
220
221 E1000_WRITE_REG(hw, EECD, eecd);
222 E1000_WRITE_FLUSH(hw);
223
224 udelay(50);
225
226 e1000_raise_ee_clk(hw, &eecd);
227 e1000_lower_ee_clk(hw, &eecd);
228
229 mask = mask >> 1;
230
231 } while (mask);
232
233 /* We leave the "DI" bit set to "0" when we leave this routine. */
234 eecd &= ~E1000_EECD_DI;
235 E1000_WRITE_REG(hw, EECD, eecd);
236}
237
238/******************************************************************************
239 * Shift data bits in from the EEPROM
240 *
241 * hw - Struct containing variables accessed by shared code
242 *****************************************************************************/
243static uint16_t
aa070789 244e1000_shift_in_ee_bits(struct e1000_hw *hw, uint16_t count)
682011ff
WD		 245{
246 uint32_t eecd;
247 uint32_t i;
248 uint16_t data;
249
aa070789
RZ		 250 /* In order to read a register from the EEPROM, we need to shift 'count'
251 * bits in from the EEPROM. Bits are "shifted in" by raising the clock
252 * input to the EEPROM (setting the SK bit), and then reading the
253 * value of the "DO" bit. During this "shifting in" process the
254 * "DI" bit should always be clear.
682011ff
WD		 255 */
256
257 eecd = E1000_READ_REG(hw, EECD);
258
259 eecd &= ~(E1000_EECD_DO | E1000_EECD_DI);
260 data = 0;
261
aa070789 262 for (i = 0; i < count; i++) {
682011ff
WD		 263 data = data << 1;
264 e1000_raise_ee_clk(hw, &eecd);
265
266 eecd = E1000_READ_REG(hw, EECD);
267
268 eecd &= ~(E1000_EECD_DI);
269 if (eecd & E1000_EECD_DO)
270 data |= 1;
271
272 e1000_lower_ee_clk(hw, &eecd);
273 }
274
275 return data;
276}
277
278/******************************************************************************
aa070789 279 * Returns EEPROM to a "standby" state
682011ff
WD		 280 *
281 * hw - Struct containing variables accessed by shared code
682011ff 282 *****************************************************************************/
2326a94d 283void e1000_standby_eeprom(struct e1000_hw *hw)
682011ff 284{
aa070789 285 struct e1000_eeprom_info *eeprom = &hw->eeprom;
682011ff
WD		 286 uint32_t eecd;
287
288 eecd = E1000_READ_REG(hw, EECD);
289
aa070789
RZ		 290 if (eeprom->type == e1000_eeprom_microwire) {
291 eecd &= ~(E1000_EECD_CS | E1000_EECD_SK);
292 E1000_WRITE_REG(hw, EECD, eecd);
293 E1000_WRITE_FLUSH(hw);
294 udelay(eeprom->delay_usec);
682011ff 295
aa070789
RZ		 296 /* Clock high */
297 eecd |= E1000_EECD_SK;
298 E1000_WRITE_REG(hw, EECD, eecd);
299 E1000_WRITE_FLUSH(hw);
300 udelay(eeprom->delay_usec);
301
302 /* Select EEPROM */
303 eecd |= E1000_EECD_CS;
304 E1000_WRITE_REG(hw, EECD, eecd);
305 E1000_WRITE_FLUSH(hw);
306 udelay(eeprom->delay_usec);
307
308 /* Clock low */
309 eecd &= ~E1000_EECD_SK;
310 E1000_WRITE_REG(hw, EECD, eecd);
311 E1000_WRITE_FLUSH(hw);
312 udelay(eeprom->delay_usec);
313 } else if (eeprom->type == e1000_eeprom_spi) {
314 /* Toggle CS to flush commands */
315 eecd |= E1000_EECD_CS;
316 E1000_WRITE_REG(hw, EECD, eecd);
317 E1000_WRITE_FLUSH(hw);
318 udelay(eeprom->delay_usec);
319 eecd &= ~E1000_EECD_CS;
320 E1000_WRITE_REG(hw, EECD, eecd);
321 E1000_WRITE_FLUSH(hw);
322 udelay(eeprom->delay_usec);
323 }
324}
325
326/***************************************************************************
327* Description: Determines if the onboard NVM is FLASH or EEPROM.
328*
329* hw - Struct containing variables accessed by shared code
330****************************************************************************/
472d5460 331static bool e1000_is_onboard_nvm_eeprom(struct e1000_hw *hw)
aa070789
RZ		 332{
333 uint32_t eecd = 0;
334
335 DEBUGFUNC();
336
337 if (hw->mac_type == e1000_ich8lan)
472d5460 338 return false;
aa070789 339
2c2668f9 340 if (hw->mac_type == e1000_82573 || hw->mac_type == e1000_82574) {
aa070789
RZ		 341 eecd = E1000_READ_REG(hw, EECD);
342
343 /* Isolate bits 15 & 16 */
344 eecd = ((eecd >> 15) & 0x03);
345
346 /* If both bits are set, device is Flash type */
347 if (eecd == 0x03)
472d5460 348 return false;
aa070789 349 }
472d5460 350 return true;
682011ff
WD		 351}
352
353/******************************************************************************
aa070789 354 * Prepares EEPROM for access
8bde7f77 355 *
682011ff 356 * hw - Struct containing variables accessed by shared code
aa070789
RZ		 357 *
358 * Lowers EEPROM clock. Clears input pin. Sets the chip select pin. This
359 * function should be called before issuing a command to the EEPROM.
682011ff 360 *****************************************************************************/
2326a94d 361int32_t e1000_acquire_eeprom(struct e1000_hw *hw)
682011ff 362{
aa070789
RZ		 363 struct e1000_eeprom_info *eeprom = &hw->eeprom;
364 uint32_t eecd, i = 0;
682011ff 365
f81ecb5d 366 DEBUGFUNC();
aa070789
RZ		 367
368 if (e1000_swfw_sync_acquire(hw, E1000_SWFW_EEP_SM))
369 return -E1000_ERR_SWFW_SYNC;
682011ff
WD		 370 eecd = E1000_READ_REG(hw, EECD);
371
95186063 372 if (hw->mac_type != e1000_82573 && hw->mac_type != e1000_82574) {
aa070789
RZ		 373 /* Request EEPROM Access */
374 if (hw->mac_type > e1000_82544) {
375 eecd |= E1000_EECD_REQ;
376 E1000_WRITE_REG(hw, EECD, eecd);
377 eecd = E1000_READ_REG(hw, EECD);
378 while ((!(eecd & E1000_EECD_GNT)) &&
379 (i < E1000_EEPROM_GRANT_ATTEMPTS)) {
380 i++;
381 udelay(5);
382 eecd = E1000_READ_REG(hw, EECD);
383 }
384 if (!(eecd & E1000_EECD_GNT)) {
385 eecd &= ~E1000_EECD_REQ;
386 E1000_WRITE_REG(hw, EECD, eecd);
387 DEBUGOUT("Could not acquire EEPROM grant\n");
388 return -E1000_ERR_EEPROM;
389 }
390 }
391 }
682011ff 392
aa070789 393 /* Setup EEPROM for Read/Write */
682011ff 394
aa070789
RZ		 395 if (eeprom->type == e1000_eeprom_microwire) {
396 /* Clear SK and DI */
397 eecd &= ~(E1000_EECD_DI | E1000_EECD_SK);
398 E1000_WRITE_REG(hw, EECD, eecd);
682011ff 399
aa070789
RZ		 400 /* Set CS */
401 eecd |= E1000_EECD_CS;
402 E1000_WRITE_REG(hw, EECD, eecd);
403 } else if (eeprom->type == e1000_eeprom_spi) {
404 /* Clear SK and CS */
405 eecd &= ~(E1000_EECD_CS | E1000_EECD_SK);
406 E1000_WRITE_REG(hw, EECD, eecd);
407 udelay(1);
408 }
409
410 return E1000_SUCCESS;
682011ff
WD		 411}
412
413/******************************************************************************
aa070789
RZ		 414 * Sets up eeprom variables in the hw struct. Must be called after mac_type
415 * is configured. Additionally, if this is ICH8, the flash controller GbE
416 * registers must be mapped, or this will crash.
682011ff
WD		 417 *
418 * hw - Struct containing variables accessed by shared code
682011ff 419 *****************************************************************************/
aa070789 420static int32_t e1000_init_eeprom_params(struct e1000_hw *hw)
682011ff 421{
aa070789 422 struct e1000_eeprom_info *eeprom = &hw->eeprom;
95186063 423 uint32_t eecd;
aa070789
RZ		 424 int32_t ret_val = E1000_SUCCESS;
425 uint16_t eeprom_size;
682011ff 426
95186063
MV		 427 if (hw->mac_type == e1000_igb)
428 eecd = E1000_READ_REG(hw, I210_EECD);
429 else
430 eecd = E1000_READ_REG(hw, EECD);
431
f81ecb5d 432 DEBUGFUNC();
aa070789
RZ		 433
434 switch (hw->mac_type) {
435 case e1000_82542_rev2_0:
436 case e1000_82542_rev2_1:
437 case e1000_82543:
438 case e1000_82544:
439 eeprom->type = e1000_eeprom_microwire;
440 eeprom->word_size = 64;
441 eeprom->opcode_bits = 3;
442 eeprom->address_bits = 6;
443 eeprom->delay_usec = 50;
472d5460
YS		 444 eeprom->use_eerd = false;
445 eeprom->use_eewr = false;
aa070789
RZ		 446 break;
447 case e1000_82540:
448 case e1000_82545:
449 case e1000_82545_rev_3:
450 case e1000_82546:
451 case e1000_82546_rev_3:
452 eeprom->type = e1000_eeprom_microwire;
453 eeprom->opcode_bits = 3;
454 eeprom->delay_usec = 50;
455 if (eecd & E1000_EECD_SIZE) {
456 eeprom->word_size = 256;
457 eeprom->address_bits = 8;
458 } else {
459 eeprom->word_size = 64;
460 eeprom->address_bits = 6;
461 }
472d5460
YS		 462 eeprom->use_eerd = false;
463 eeprom->use_eewr = false;
aa070789
RZ		 464 break;
465 case e1000_82541:
466 case e1000_82541_rev_2:
467 case e1000_82547:
468 case e1000_82547_rev_2:
469 if (eecd & E1000_EECD_TYPE) {
470 eeprom->type = e1000_eeprom_spi;
471 eeprom->opcode_bits = 8;
472 eeprom->delay_usec = 1;
473 if (eecd & E1000_EECD_ADDR_BITS) {
474 eeprom->page_size = 32;
475 eeprom->address_bits = 16;
476 } else {
477 eeprom->page_size = 8;
478 eeprom->address_bits = 8;
479 }
480 } else {
481 eeprom->type = e1000_eeprom_microwire;
482 eeprom->opcode_bits = 3;
483 eeprom->delay_usec = 50;
484 if (eecd & E1000_EECD_ADDR_BITS) {
485 eeprom->word_size = 256;
486 eeprom->address_bits = 8;
487 } else {
488 eeprom->word_size = 64;
489 eeprom->address_bits = 6;
490 }
491 }
472d5460
YS		 492 eeprom->use_eerd = false;
493 eeprom->use_eewr = false;
aa070789
RZ		 494 break;
495 case e1000_82571:
496 case e1000_82572:
497 eeprom->type = e1000_eeprom_spi;
498 eeprom->opcode_bits = 8;
499 eeprom->delay_usec = 1;
500 if (eecd & E1000_EECD_ADDR_BITS) {
501 eeprom->page_size = 32;
502 eeprom->address_bits = 16;
503 } else {
504 eeprom->page_size = 8;
505 eeprom->address_bits = 8;
506 }
472d5460
YS		 507 eeprom->use_eerd = false;
508 eeprom->use_eewr = false;
aa070789
RZ		 509 break;
510 case e1000_82573:
2c2668f9 511 case e1000_82574:
aa070789
RZ		 512 eeprom->type = e1000_eeprom_spi;
513 eeprom->opcode_bits = 8;
514 eeprom->delay_usec = 1;
515 if (eecd & E1000_EECD_ADDR_BITS) {
516 eeprom->page_size = 32;
517 eeprom->address_bits = 16;
518 } else {
519 eeprom->page_size = 8;
520 eeprom->address_bits = 8;
682011ff 521 }
472d5460 522 if (e1000_is_onboard_nvm_eeprom(hw) == false) {
95186063
MV		 523 eeprom->use_eerd = true;
524 eeprom->use_eewr = true;
525
aa070789
RZ		 526 eeprom->type = e1000_eeprom_flash;
527 eeprom->word_size = 2048;
528
529 /* Ensure that the Autonomous FLASH update bit is cleared due to
530 * Flash update issue on parts which use a FLASH for NVM. */
531 eecd &= ~E1000_EECD_AUPDEN;
682011ff 532 E1000_WRITE_REG(hw, EECD, eecd);
682011ff 533 }
aa070789
RZ		 534 break;
535 case e1000_80003es2lan:
536 eeprom->type = e1000_eeprom_spi;
537 eeprom->opcode_bits = 8;
538 eeprom->delay_usec = 1;
539 if (eecd & E1000_EECD_ADDR_BITS) {
540 eeprom->page_size = 32;
541 eeprom->address_bits = 16;
542 } else {
543 eeprom->page_size = 8;
544 eeprom->address_bits = 8;
545 }
472d5460
YS		 546 eeprom->use_eerd = true;
547 eeprom->use_eewr = false;
aa070789 548 break;
95186063
MV		 549 case e1000_igb:
550 /* i210 has 4k of iNVM mapped as EEPROM */
551 eeprom->type = e1000_eeprom_invm;
552 eeprom->opcode_bits = 8;
553 eeprom->delay_usec = 1;
554 eeprom->page_size = 32;
555 eeprom->address_bits = 16;
556 eeprom->use_eerd = true;
557 eeprom->use_eewr = false;
558 break;
aa070789
RZ		 559 default:
560 break;
682011ff
WD		 561 }
562
95186063
MV		 563 if (eeprom->type == e1000_eeprom_spi ||
564 eeprom->type == e1000_eeprom_invm) {
aa070789
RZ		 565 /* eeprom_size will be an enum [0..8] that maps
566 * to eeprom sizes 128B to
567 * 32KB (incremented by powers of 2).
568 */
569 if (hw->mac_type <= e1000_82547_rev_2) {
570 /* Set to default value for initial eeprom read. */
571 eeprom->word_size = 64;
572 ret_val = e1000_read_eeprom(hw, EEPROM_CFG, 1,
573 &eeprom_size);
574 if (ret_val)
575 return ret_val;
576 eeprom_size = (eeprom_size & EEPROM_SIZE_MASK)
577 >> EEPROM_SIZE_SHIFT;
578 /* 256B eeprom size was not supported in earlier
579 * hardware, so we bump eeprom_size up one to
580 * ensure that "1" (which maps to 256B) is never
581 * the result used in the shifting logic below. */
582 if (eeprom_size)
583 eeprom_size++;
584 } else {
585 eeprom_size = (uint16_t)((eecd &
586 E1000_EECD_SIZE_EX_MASK) >>
587 E1000_EECD_SIZE_EX_SHIFT);
588 }
589
590 eeprom->word_size = 1 << (eeprom_size + EEPROM_WORD_SIZE_SHIFT);
591 }
592 return ret_val;
682011ff
WD		 593}
594
aa070789
RZ		 595/******************************************************************************
596 * Polls the status bit (bit 1) of the EERD to determine when the read is done.
597 *
598 * hw - Struct containing variables accessed by shared code
599 *****************************************************************************/
600static int32_t
601e1000_poll_eerd_eewr_done(struct e1000_hw *hw, int eerd)
682011ff 602{
aa070789
RZ		 603 uint32_t attempts = 100000;
604 uint32_t i, reg = 0;
605 int32_t done = E1000_ERR_EEPROM;
682011ff 606
aa070789 607 for (i = 0; i < attempts; i++) {
95186063
MV		 608 if (eerd == E1000_EEPROM_POLL_READ) {
609 if (hw->mac_type == e1000_igb)
610 reg = E1000_READ_REG(hw, I210_EERD);
611 else
612 reg = E1000_READ_REG(hw, EERD);
613 } else {
614 if (hw->mac_type == e1000_igb)
615 reg = E1000_READ_REG(hw, I210_EEWR);
616 else
617 reg = E1000_READ_REG(hw, EEWR);
618 }
aa070789
RZ		 619
620 if (reg & E1000_EEPROM_RW_REG_DONE) {
621 done = E1000_SUCCESS;
622 break;
623 }
624 udelay(5);
625 }
626
627 return done;
682011ff
WD		 628}
629
aa070789
RZ		 630/******************************************************************************
631 * Reads a 16 bit word from the EEPROM using the EERD register.
632 *
633 * hw - Struct containing variables accessed by shared code
634 * offset - offset of word in the EEPROM to read
635 * data - word read from the EEPROM
636 * words - number of words to read
637 *****************************************************************************/
638static int32_t
639e1000_read_eeprom_eerd(struct e1000_hw *hw,
640 uint16_t offset,
641 uint16_t words,
642 uint16_t *data)
682011ff 643{
aa070789
RZ		 644 uint32_t i, eerd = 0;
645 int32_t error = 0;
646
647 for (i = 0; i < words; i++) {
648 eerd = ((offset+i) << E1000_EEPROM_RW_ADDR_SHIFT) +
649 E1000_EEPROM_RW_REG_START;
650
95186063
MV		 651 if (hw->mac_type == e1000_igb)
652 E1000_WRITE_REG(hw, I210_EERD, eerd);
653 else
654 E1000_WRITE_REG(hw, EERD, eerd);
655
aa070789
RZ		 656 error = e1000_poll_eerd_eewr_done(hw, E1000_EEPROM_POLL_READ);
657
658 if (error)
659 break;
95186063
MV		 660
661 if (hw->mac_type == e1000_igb) {
662 data[i] = (E1000_READ_REG(hw, I210_EERD) >>
663 E1000_EEPROM_RW_REG_DATA);
664 } else {
665 data[i] = (E1000_READ_REG(hw, EERD) >>
aa070789 666 E1000_EEPROM_RW_REG_DATA);
95186063 667 }
682011ff 668
682011ff 669 }
aa070789
RZ		 670
671 return error;
682011ff
WD		 672}
673
2326a94d 674void e1000_release_eeprom(struct e1000_hw *hw)
682011ff
WD		 675{
676 uint32_t eecd;
682011ff 677
aa070789
RZ		 678 DEBUGFUNC();
679
680 eecd = E1000_READ_REG(hw, EECD);
681
682 if (hw->eeprom.type == e1000_eeprom_spi) {
683 eecd |= E1000_EECD_CS; /* Pull CS high */
684 eecd &= ~E1000_EECD_SK; /* Lower SCK */
685
682011ff 686 E1000_WRITE_REG(hw, EECD, eecd);
aa070789
RZ		 687
688 udelay(hw->eeprom.delay_usec);
689 } else if (hw->eeprom.type == e1000_eeprom_microwire) {
690 /* cleanup eeprom */
691
692 /* CS on Microwire is active-high */
693 eecd &= ~(E1000_EECD_CS | E1000_EECD_DI);
694
695 E1000_WRITE_REG(hw, EECD, eecd);
696
697 /* Rising edge of clock */
698 eecd |= E1000_EECD_SK;
699 E1000_WRITE_REG(hw, EECD, eecd);
700 E1000_WRITE_FLUSH(hw);
701 udelay(hw->eeprom.delay_usec);
702
703 /* Falling edge of clock */
704 eecd &= ~E1000_EECD_SK;
705 E1000_WRITE_REG(hw, EECD, eecd);
706 E1000_WRITE_FLUSH(hw);
707 udelay(hw->eeprom.delay_usec);
682011ff 708 }
682011ff
WD		 709
710 /* Stop requesting EEPROM access */
711 if (hw->mac_type > e1000_82544) {
682011ff
WD		 712 eecd &= ~E1000_EECD_REQ;
713 E1000_WRITE_REG(hw, EECD, eecd);
714 }
7e2d991d
TH		 715
716 e1000_swfw_sync_release(hw, E1000_SWFW_EEP_SM);
682011ff 717}
7e2d991d 718
682011ff 719/******************************************************************************
aa070789 720 * Reads a 16 bit word from the EEPROM.
8bde7f77 721 *
682011ff 722 * hw - Struct containing variables accessed by shared code
682011ff 723 *****************************************************************************/
aa070789
RZ		 724static int32_t
725e1000_spi_eeprom_ready(struct e1000_hw *hw)
682011ff 726{
aa070789
RZ		 727 uint16_t retry_count = 0;
728 uint8_t spi_stat_reg;
682011ff
WD		 729
730 DEBUGFUNC();
731
aa070789
RZ		 732 /* Read "Status Register" repeatedly until the LSB is cleared. The
733 * EEPROM will signal that the command has been completed by clearing
734 * bit 0 of the internal status register. If it's not cleared within
735 * 5 milliseconds, then error out.
736 */
737 retry_count = 0;
738 do {
739 e1000_shift_out_ee_bits(hw, EEPROM_RDSR_OPCODE_SPI,
740 hw->eeprom.opcode_bits);
741 spi_stat_reg = (uint8_t)e1000_shift_in_ee_bits(hw, 8);
742 if (!(spi_stat_reg & EEPROM_STATUS_RDY_SPI))
743 break;
8bde7f77 744
aa070789
RZ		 745 udelay(5);
746 retry_count += 5;
747
748 e1000_standby_eeprom(hw);
749 } while (retry_count < EEPROM_MAX_RETRY_SPI);
750
751 /* ATMEL SPI write time could vary from 0-20mSec on 3.3V devices (and
752 * only 0-5mSec on 5V devices)
753 */
754 if (retry_count >= EEPROM_MAX_RETRY_SPI) {
755 DEBUGOUT("SPI EEPROM Status error\n");
682011ff
WD		 756 return -E1000_ERR_EEPROM;
757 }
aa070789
RZ		 758
759 return E1000_SUCCESS;
682011ff
WD		 760}
761
762/******************************************************************************
aa070789 763 * Reads a 16 bit word from the EEPROM.
682011ff 764 *
aa070789
RZ		 765 * hw - Struct containing variables accessed by shared code
766 * offset - offset of word in the EEPROM to read
767 * data - word read from the EEPROM
682011ff 768 *****************************************************************************/
aa070789
RZ		 769static int32_t
770e1000_read_eeprom(struct e1000_hw *hw, uint16_t offset,
771 uint16_t words, uint16_t *data)
682011ff 772{
aa070789
RZ		 773 struct e1000_eeprom_info *eeprom = &hw->eeprom;
774 uint32_t i = 0;
682011ff
WD		 775
776 DEBUGFUNC();
777
aa070789
RZ		 778 /* If eeprom is not yet detected, do so now */
779 if (eeprom->word_size == 0)
780 e1000_init_eeprom_params(hw);
781
782 /* A check for invalid values: offset too large, too many words,
783 * and not enough words.
784 */
785 if ((offset >= eeprom->word_size) ||
786 (words > eeprom->word_size - offset) ||
787 (words == 0)) {
788 DEBUGOUT("\"words\" parameter out of bounds."
789 "Words = %d, size = %d\n", offset, eeprom->word_size);
790 return -E1000_ERR_EEPROM;
791 }
792
793 /* EEPROM's that don't use EERD to read require us to bit-bang the SPI
794 * directly. In this case, we need to acquire the EEPROM so that
795 * FW or other port software does not interrupt.
796 */
472d5460
YS		 797 if (e1000_is_onboard_nvm_eeprom(hw) == true &&
798 hw->eeprom.use_eerd == false) {
aa070789
RZ		 799
800 /* Prepare the EEPROM for bit-bang reading */
801 if (e1000_acquire_eeprom(hw) != E1000_SUCCESS)
802 return -E1000_ERR_EEPROM;
803 }
804
805 /* Eerd register EEPROM access requires no eeprom aquire/release */
472d5460 806 if (eeprom->use_eerd == true)
aa070789
RZ		 807 return e1000_read_eeprom_eerd(hw, offset, words, data);
808
aa070789
RZ		 809 /* Set up the SPI or Microwire EEPROM for bit-bang reading. We have
810 * acquired the EEPROM at this point, so any returns should relase it */
811 if (eeprom->type == e1000_eeprom_spi) {
812 uint16_t word_in;
813 uint8_t read_opcode = EEPROM_READ_OPCODE_SPI;
814
815 if (e1000_spi_eeprom_ready(hw)) {
816 e1000_release_eeprom(hw);
817 return -E1000_ERR_EEPROM;
818 }
819
820 e1000_standby_eeprom(hw);
821
822 /* Some SPI eeproms use the 8th address bit embedded in
823 * the opcode */
824 if ((eeprom->address_bits == 8) && (offset >= 128))
825 read_opcode |= EEPROM_A8_OPCODE_SPI;
826
827 /* Send the READ command (opcode + addr) */
828 e1000_shift_out_ee_bits(hw, read_opcode, eeprom->opcode_bits);
829 e1000_shift_out_ee_bits(hw, (uint16_t)(offset*2),
830 eeprom->address_bits);
831
832 /* Read the data. The address of the eeprom internally
833 * increments with each byte (spi) being read, saving on the
834 * overhead of eeprom setup and tear-down. The address
835 * counter will roll over if reading beyond the size of
836 * the eeprom, thus allowing the entire memory to be read
837 * starting from any offset. */
838 for (i = 0; i < words; i++) {
839 word_in = e1000_shift_in_ee_bits(hw, 16);
840 data[i] = (word_in >> 8) | (word_in << 8);
841 }
842 } else if (eeprom->type == e1000_eeprom_microwire) {
843 for (i = 0; i < words; i++) {
844 /* Send the READ command (opcode + addr) */
845 e1000_shift_out_ee_bits(hw,
846 EEPROM_READ_OPCODE_MICROWIRE,
847 eeprom->opcode_bits);
848 e1000_shift_out_ee_bits(hw, (uint16_t)(offset + i),
849 eeprom->address_bits);
850
851 /* Read the data. For microwire, each word requires
852 * the overhead of eeprom setup and tear-down. */
853 data[i] = e1000_shift_in_ee_bits(hw, 16);
854 e1000_standby_eeprom(hw);
855 }
856 }
857
858 /* End this read operation */
859 e1000_release_eeprom(hw);
860
861 return E1000_SUCCESS;
862}
863
f1bcad22
HL		 864/******************************************************************************
865 * e1000_write_eeprom_srwr - Write to Shadow Ram using EEWR
866 * @hw: pointer to the HW structure
867 * @offset: offset within the Shadow Ram to be written to
868 * @words: number of words to write
869 * @data: 16 bit word(s) to be written to the Shadow Ram
870 *
871 * Writes data to Shadow Ram at offset using EEWR register.
872 *
873 * If e1000_update_eeprom_checksum_i210 is not called after this function, the
874 * Shadow Ram will most likely contain an invalid checksum.
875 *****************************************************************************/
876static int32_t e1000_write_eeprom_srwr(struct e1000_hw *hw, uint16_t offset,
877 uint16_t words, uint16_t *data)
878{
879 struct e1000_eeprom_info *eeprom = &hw->eeprom;
880 uint32_t i, k, eewr = 0;
881 uint32_t attempts = 100000;
882 int32_t ret_val = 0;
883
884 /* A check for invalid values: offset too large, too many words,
885 * too many words for the offset, and not enough words.
886 */
887 if ((offset >= eeprom->word_size) ||
888 (words > (eeprom->word_size - offset)) || (words == 0)) {
889 DEBUGOUT("nvm parameter(s) out of bounds\n");
890 ret_val = -E1000_ERR_EEPROM;
891 goto out;
892 }
893
894 for (i = 0; i < words; i++) {
895 eewr = ((offset + i) << E1000_EEPROM_RW_ADDR_SHIFT)
896 | (data[i] << E1000_EEPROM_RW_REG_DATA) |
897 E1000_EEPROM_RW_REG_START;
898
899 E1000_WRITE_REG(hw, I210_EEWR, eewr);
900
901 for (k = 0; k < attempts; k++) {
902 if (E1000_EEPROM_RW_REG_DONE &
903 E1000_READ_REG(hw, I210_EEWR)) {
904 ret_val = 0;
905 break;
906 }
907 udelay(5);
908 }
909
910 if (ret_val) {
911 DEBUGOUT("Shadow RAM write EEWR timed out\n");
912 break;
913 }
914 }
915
916out:
917 return ret_val;
918}
919
920/******************************************************************************
921 * e1000_pool_flash_update_done_i210 - Pool FLUDONE status.
922 * @hw: pointer to the HW structure
923 *
924 *****************************************************************************/
925static int32_t e1000_pool_flash_update_done_i210(struct e1000_hw *hw)
926{
927 int32_t ret_val = -E1000_ERR_EEPROM;
928 uint32_t i, reg;
929
930 for (i = 0; i < E1000_FLUDONE_ATTEMPTS; i++) {
931 reg = E1000_READ_REG(hw, EECD);
932 if (reg & E1000_EECD_FLUDONE_I210) {
933 ret_val = 0;
934 break;
935 }
936 udelay(5);
937 }
938
939 return ret_val;
940}
941
942/******************************************************************************
943 * e1000_update_flash_i210 - Commit EEPROM to the flash
944 * @hw: pointer to the HW structure
945 *
946 *****************************************************************************/
947static int32_t e1000_update_flash_i210(struct e1000_hw *hw)
948{
949 int32_t ret_val = 0;
950 uint32_t flup;
951
952 ret_val = e1000_pool_flash_update_done_i210(hw);
953 if (ret_val == -E1000_ERR_EEPROM) {
954 DEBUGOUT("Flash update time out\n");
955 goto out;
956 }
957
958 flup = E1000_READ_REG(hw, EECD) | E1000_EECD_FLUPD_I210;
959 E1000_WRITE_REG(hw, EECD, flup);
960
961 ret_val = e1000_pool_flash_update_done_i210(hw);
962 if (ret_val)
963 DEBUGOUT("Flash update time out\n");
964 else
965 DEBUGOUT("Flash update complete\n");
966
967out:
968 return ret_val;
969}
970
971/******************************************************************************
972 * e1000_update_eeprom_checksum_i210 - Update EEPROM checksum
973 * @hw: pointer to the HW structure
974 *
975 * Updates the EEPROM checksum by reading/adding each word of the EEPROM
976 * up to the checksum. Then calculates the EEPROM checksum and writes the
977 * value to the EEPROM. Next commit EEPROM data onto the Flash.
978 *****************************************************************************/
979static int32_t e1000_update_eeprom_checksum_i210(struct e1000_hw *hw)
980{
981 int32_t ret_val = 0;
982 uint16_t checksum = 0;
983 uint16_t i, nvm_data;
984
985 /* Read the first word from the EEPROM. If this times out or fails, do
986 * not continue or we could be in for a very long wait while every
987 * EEPROM read fails
988 */
989 ret_val = e1000_read_eeprom_eerd(hw, 0, 1, &nvm_data);
990 if (ret_val) {
991 DEBUGOUT("EEPROM read failed\n");
992 goto out;
993 }
994
995 if (!(e1000_get_hw_eeprom_semaphore(hw))) {
996 /* Do not use hw->nvm.ops.write, hw->nvm.ops.read
997 * because we do not want to take the synchronization
998 * semaphores twice here.
999 */
1000
1001 for (i = 0; i < EEPROM_CHECKSUM_REG; i++) {
1002 ret_val = e1000_read_eeprom_eerd(hw, i, 1, &nvm_data);
1003 if (ret_val) {
1004 e1000_put_hw_eeprom_semaphore(hw);
1005 DEBUGOUT("EEPROM Read Error while updating checksum.\n");
1006 goto out;
1007 }
1008 checksum += nvm_data;
1009 }
1010 checksum = (uint16_t)EEPROM_SUM - checksum;
1011 ret_val = e1000_write_eeprom_srwr(hw, EEPROM_CHECKSUM_REG, 1,
1012 &checksum);
1013 if (ret_val) {
1014 e1000_put_hw_eeprom_semaphore(hw);
1015 DEBUGOUT("EEPROM Write Error while updating checksum.\n");
1016 goto out;
1017 }
1018
1019 e1000_put_hw_eeprom_semaphore(hw);
1020
1021 ret_val = e1000_update_flash_i210(hw);
1022 } else {
1023 ret_val = -E1000_ERR_SWFW_SYNC;
1024 }
1025
1026out:
1027 return ret_val;
1028}
f1bcad22 1029
aa070789
RZ		 1030/******************************************************************************
1031 * Verifies that the EEPROM has a valid checksum
1032 *
1033 * hw - Struct containing variables accessed by shared code
1034 *
1035 * Reads the first 64 16 bit words of the EEPROM and sums the values read.
1036 * If the the sum of the 64 16 bit words is 0xBABA, the EEPROM's checksum is
1037 * valid.
1038 *****************************************************************************/
114d7fc0 1039static int e1000_validate_eeprom_checksum(struct e1000_hw *hw)
aa070789 1040{
114d7fc0 1041 uint16_t i, checksum, checksum_reg, *buf;
aa070789
RZ		 1042
1043 DEBUGFUNC();
1044
114d7fc0
KM		 1045 /* Allocate a temporary buffer */
1046 buf = malloc(sizeof(buf[0]) * (EEPROM_CHECKSUM_REG + 1));
1047 if (!buf) {
5c5e707a 1048 E1000_ERR(hw, "Unable to allocate EEPROM buffer!\n");
114d7fc0 1049 return -E1000_ERR_EEPROM;
aa070789
RZ		 1050 }
1051
114d7fc0
KM		 1052 /* Read the EEPROM */
1053 if (e1000_read_eeprom(hw, 0, EEPROM_CHECKSUM_REG + 1, buf) < 0) {
5c5e707a 1054 E1000_ERR(hw, "Unable to read EEPROM!\n");
aa070789
RZ		 1055 return -E1000_ERR_EEPROM;
1056 }
114d7fc0
KM		 1057
1058 /* Compute the checksum */
7a341066 1059 checksum = 0;
114d7fc0
KM		 1060 for (i = 0; i < EEPROM_CHECKSUM_REG; i++)
1061 checksum += buf[i];
1062 checksum = ((uint16_t)EEPROM_SUM) - checksum;
1063 checksum_reg = buf[i];
1064
1065 /* Verify it! */
1066 if (checksum == checksum_reg)
1067 return 0;
1068
1069 /* Hrm, verification failed, print an error */
5c5e707a
SG		 1070 E1000_ERR(hw, "EEPROM checksum is incorrect!\n");
1071 E1000_ERR(hw, " ...register was 0x%04hx, calculated 0x%04hx\n",
1072 checksum_reg, checksum);
114d7fc0
KM		 1073
1074 return -E1000_ERR_EEPROM;
aa070789 1075}
8712adfd 1076#endif /* CONFIG_E1000_NO_NVM */
ecbd2078
RZ		 1077
1078/*****************************************************************************
1079 * Set PHY to class A mode
1080 * Assumes the following operations will follow to enable the new class mode.
1081 * 1. Do a PHY soft reset
1082 * 2. Restart auto-negotiation or force link.
1083 *
1084 * hw - Struct containing variables accessed by shared code
1085 ****************************************************************************/
1086static int32_t
1087e1000_set_phy_mode(struct e1000_hw *hw)
1088{
8712adfd 1089#ifndef CONFIG_E1000_NO_NVM
ecbd2078
RZ		 1090 int32_t ret_val;
1091 uint16_t eeprom_data;
1092
1093 DEBUGFUNC();
1094
1095 if ((hw->mac_type == e1000_82545_rev_3) &&
1096 (hw->media_type == e1000_media_type_copper)) {
1097 ret_val = e1000_read_eeprom(hw, EEPROM_PHY_CLASS_WORD,
1098 1, &eeprom_data);
1099 if (ret_val)
1100 return ret_val;
1101
1102 if ((eeprom_data != EEPROM_RESERVED_WORD) &&
1103 (eeprom_data & EEPROM_PHY_CLASS_A)) {
1104 ret_val = e1000_write_phy_reg(hw,
1105 M88E1000_PHY_PAGE_SELECT, 0x000B);
1106 if (ret_val)
1107 return ret_val;
1108 ret_val = e1000_write_phy_reg(hw,
1109 M88E1000_PHY_GEN_CONTROL, 0x8104);
1110 if (ret_val)
1111 return ret_val;
1112
472d5460 1113 hw->phy_reset_disable = false;
ecbd2078
RZ		 1114 }
1115 }
8712adfd 1116#endif
ecbd2078
RZ		 1117 return E1000_SUCCESS;
1118}
aa070789 1119
8712adfd 1120#ifndef CONFIG_E1000_NO_NVM
aa070789
RZ		 1121/***************************************************************************
1122 *
1123 * Obtaining software semaphore bit (SMBI) before resetting PHY.
1124 *
1125 * hw: Struct containing variables accessed by shared code
1126 *
1127 * returns: - E1000_ERR_RESET if fail to obtain semaphore.
1128 * E1000_SUCCESS at any other case.
1129 *
1130 ***************************************************************************/
1131static int32_t
1132e1000_get_software_semaphore(struct e1000_hw *hw)
1133{
1134 int32_t timeout = hw->eeprom.word_size + 1;
1135 uint32_t swsm;
1136
1137 DEBUGFUNC();
1138
f1bcad22 1139 if (hw->mac_type != e1000_80003es2lan && hw->mac_type != e1000_igb)
aa070789
RZ		 1140 return E1000_SUCCESS;
1141
1142 while (timeout) {
1143 swsm = E1000_READ_REG(hw, SWSM);
1144 /* If SMBI bit cleared, it is now set and we hold
1145 * the semaphore */
1146 if (!(swsm & E1000_SWSM_SMBI))
1147 break;
1148 mdelay(1);
1149 timeout--;
1150 }
1151
1152 if (!timeout) {
1153 DEBUGOUT("Driver can't access device - SMBI bit is set.\n");
1154 return -E1000_ERR_RESET;
1155 }
1156
1157 return E1000_SUCCESS;
1158}
8712adfd 1159#endif
aa070789
RZ		 1160
1161/***************************************************************************
1162 * This function clears HW semaphore bits.
1163 *
1164 * hw: Struct containing variables accessed by shared code
1165 *
1166 * returns: - None.
1167 *
1168 ***************************************************************************/
1169static void
1170e1000_put_hw_eeprom_semaphore(struct e1000_hw *hw)
1171{
8712adfd 1172#ifndef CONFIG_E1000_NO_NVM
aa070789
RZ		 1173 uint32_t swsm;
1174
1175 DEBUGFUNC();
1176
1177 if (!hw->eeprom_semaphore_present)
1178 return;
1179
1180 swsm = E1000_READ_REG(hw, SWSM);
8f5672ea 1181 if (hw->mac_type == e1000_80003es2lan || hw->mac_type == e1000_igb) {
aa070789
RZ		 1182 /* Release both semaphores. */
1183 swsm &= ~(E1000_SWSM_SMBI | E1000_SWSM_SWESMBI);
1184 } else
1185 swsm &= ~(E1000_SWSM_SWESMBI);
1186 E1000_WRITE_REG(hw, SWSM, swsm);
8712adfd 1187#endif
aa070789
RZ		 1188}
1189
1190/***************************************************************************
1191 *
1192 * Using the combination of SMBI and SWESMBI semaphore bits when resetting
1193 * adapter or Eeprom access.
1194 *
1195 * hw: Struct containing variables accessed by shared code
1196 *
1197 * returns: - E1000_ERR_EEPROM if fail to access EEPROM.
1198 * E1000_SUCCESS at any other case.
1199 *
1200 ***************************************************************************/
1201static int32_t
1202e1000_get_hw_eeprom_semaphore(struct e1000_hw *hw)
1203{
8712adfd 1204#ifndef CONFIG_E1000_NO_NVM
aa070789
RZ		 1205 int32_t timeout;
1206 uint32_t swsm;
1207
1208 DEBUGFUNC();
1209
1210 if (!hw->eeprom_semaphore_present)
1211 return E1000_SUCCESS;
1212
f1bcad22 1213 if (hw->mac_type == e1000_80003es2lan || hw->mac_type == e1000_igb) {
aa070789
RZ		 1214 /* Get the SW semaphore. */
1215 if (e1000_get_software_semaphore(hw) != E1000_SUCCESS)
1216 return -E1000_ERR_EEPROM;
1217 }
1218
1219 /* Get the FW semaphore. */
1220 timeout = hw->eeprom.word_size + 1;
1221 while (timeout) {
1222 swsm = E1000_READ_REG(hw, SWSM);
1223 swsm |= E1000_SWSM_SWESMBI;
1224 E1000_WRITE_REG(hw, SWSM, swsm);
1225 /* if we managed to set the bit we got the semaphore. */
1226 swsm = E1000_READ_REG(hw, SWSM);
1227 if (swsm & E1000_SWSM_SWESMBI)
1228 break;
1229
1230 udelay(50);
1231 timeout--;
1232 }
1233
1234 if (!timeout) {
1235 /* Release semaphores */
1236 e1000_put_hw_eeprom_semaphore(hw);
1237 DEBUGOUT("Driver can't access the Eeprom - "
1238 "SWESMBI bit is set.\n");
1239 return -E1000_ERR_EEPROM;
1240 }
8712adfd 1241#endif
aa070789
RZ		 1242 return E1000_SUCCESS;
1243}
1244
7e2d991d 1245/* Take ownership of the PHY */
aa070789
RZ		 1246static int32_t
1247e1000_swfw_sync_acquire(struct e1000_hw *hw, uint16_t mask)
1248{
1249 uint32_t swfw_sync = 0;
1250 uint32_t swmask = mask;
1251 uint32_t fwmask = mask << 16;
1252 int32_t timeout = 200;
1253
1254 DEBUGFUNC();
1255 while (timeout) {
1256 if (e1000_get_hw_eeprom_semaphore(hw))
1257 return -E1000_ERR_SWFW_SYNC;
1258
3c63dd53 1259 swfw_sync = E1000_READ_REG(hw, SW_FW_SYNC);
76f8cdb2 1260 if (!(swfw_sync & (fwmask | swmask)))
aa070789
RZ		 1261 break;
1262
1263 /* firmware currently using resource (fwmask) */
1264 /* or other software thread currently using resource (swmask) */
1265 e1000_put_hw_eeprom_semaphore(hw);
1266 mdelay(5);
1267 timeout--;
1268 }
1269
1270 if (!timeout) {
1271 DEBUGOUT("Driver can't access resource, SW_FW_SYNC timeout.\n");
1272 return -E1000_ERR_SWFW_SYNC;
1273 }
1274
1275 swfw_sync |= swmask;
1276 E1000_WRITE_REG(hw, SW_FW_SYNC, swfw_sync);
1277
1278 e1000_put_hw_eeprom_semaphore(hw);
1279 return E1000_SUCCESS;
1280}
1281
7e2d991d
TH		 1282static void e1000_swfw_sync_release(struct e1000_hw *hw, uint16_t mask)
1283{
1284 uint32_t swfw_sync = 0;
1285
1286 DEBUGFUNC();
1287 while (e1000_get_hw_eeprom_semaphore(hw))
1288 ; /* Empty */
1289
1290 swfw_sync = E1000_READ_REG(hw, SW_FW_SYNC);
1291 swfw_sync &= ~mask;
1292 E1000_WRITE_REG(hw, SW_FW_SYNC, swfw_sync);
1293
1294 e1000_put_hw_eeprom_semaphore(hw);
1295}
1296
472d5460 1297static bool e1000_is_second_port(struct e1000_hw *hw)
987b43a1
KM		 1298{
1299 switch (hw->mac_type) {
1300 case e1000_80003es2lan:
1301 case e1000_82546:
1302 case e1000_82571:
1303 if (E1000_READ_REG(hw, STATUS) & E1000_STATUS_FUNC_1)
472d5460 1304 return true;
987b43a1
KM		 1305 /* Fallthrough */
1306 default:
472d5460 1307 return false;
987b43a1
KM		 1308 }
1309}
1310
8712adfd 1311#ifndef CONFIG_E1000_NO_NVM
aa070789 1312/******************************************************************************
e0a75fed 1313 * Reads the adapter's MAC address from the EEPROM
aa070789 1314 *
e0a75fed
HL		 1315 * hw - Struct containing variables accessed by shared code
1316 * enetaddr - buffering where the MAC address will be stored
aa070789 1317 *****************************************************************************/
e0a75fed
HL		 1318static int e1000_read_mac_addr_from_eeprom(struct e1000_hw *hw,
1319 unsigned char enetaddr[6])
aa070789 1320{
aa070789
RZ		 1321 uint16_t offset;
1322 uint16_t eeprom_data;
1323 int i;
1324
aa070789
RZ		 1325 for (i = 0; i < NODE_ADDRESS_SIZE; i += 2) {
1326 offset = i >> 1;
e0a75fed 1327 if (e1000_read_eeprom(hw, offset, 1, &eeprom_data) < 0) {
682011ff
WD		 1328 DEBUGOUT("EEPROM Read Error\n");
1329 return -E1000_ERR_EEPROM;
1330 }
5c5e707a
SG		 1331 enetaddr[i] = eeprom_data & 0xff;
1332 enetaddr[i + 1] = (eeprom_data >> 8) & 0xff;
682011ff 1333 }
987b43a1 1334
e0a75fed
HL		 1335 return 0;
1336}
1337
1338/******************************************************************************
1339 * Reads the adapter's MAC address from the RAL/RAH registers
1340 *
1341 * hw - Struct containing variables accessed by shared code
1342 * enetaddr - buffering where the MAC address will be stored
1343 *****************************************************************************/
1344static int e1000_read_mac_addr_from_regs(struct e1000_hw *hw,
1345 unsigned char enetaddr[6])
1346{
1347 uint16_t offset, tmp;
1348 uint32_t reg_data = 0;
1349 int i;
1350
1351 if (hw->mac_type != e1000_igb)
1352 return -E1000_ERR_MAC_TYPE;
1353
1354 for (i = 0; i < NODE_ADDRESS_SIZE; i += 2) {
1355 offset = i >> 1;
1356
1357 if (offset == 0)
1358 reg_data = E1000_READ_REG_ARRAY(hw, RA, 0);
1359 else if (offset == 1)
1360 reg_data >>= 16;
1361 else if (offset == 2)
1362 reg_data = E1000_READ_REG_ARRAY(hw, RA, 1);
1363 tmp = reg_data & 0xffff;
1364
1365 enetaddr[i] = tmp & 0xff;
1366 enetaddr[i + 1] = (tmp >> 8) & 0xff;
1367 }
1368
1369 return 0;
1370}
1371
1372/******************************************************************************
1373 * Reads the adapter's MAC address from the EEPROM and inverts the LSB for the
1374 * second function of dual function devices
1375 *
1376 * hw - Struct containing variables accessed by shared code
1377 * enetaddr - buffering where the MAC address will be stored
1378 *****************************************************************************/
1379static int e1000_read_mac_addr(struct e1000_hw *hw, unsigned char enetaddr[6])
1380{
1381 int ret_val;
1382
1383 if (hw->mac_type == e1000_igb) {
1384 /* i210 preloads MAC address into RAL/RAH registers */
1385 ret_val = e1000_read_mac_addr_from_regs(hw, enetaddr);
1386 } else {
1387 ret_val = e1000_read_mac_addr_from_eeprom(hw, enetaddr);
1388 }
1389 if (ret_val)
1390 return ret_val;
1391
987b43a1
KM		 1392 /* Invert the last bit if this is the second device */
1393 if (e1000_is_second_port(hw))
5c5e707a 1394 enetaddr[5] ^= 1;
987b43a1 1395
682011ff
WD		 1396 return 0;
1397}
8712adfd 1398#endif
682011ff
WD		 1399
1400/******************************************************************************
1401 * Initializes receive address filters.
1402 *
8bde7f77 1403 * hw - Struct containing variables accessed by shared code
682011ff
WD		 1404 *
1405 * Places the MAC address in receive address register 0 and clears the rest
1406 * of the receive addresss registers. Clears the multicast table. Assumes
1407 * the receiver is in reset when the routine is called.
1408 *****************************************************************************/
1409static void
5c5e707a 1410e1000_init_rx_addrs(struct e1000_hw *hw, unsigned char enetaddr[6])
682011ff 1411{
682011ff
WD		 1412 uint32_t i;
1413 uint32_t addr_low;
1414 uint32_t addr_high;
1415
1416 DEBUGFUNC();
1417
1418 /* Setup the receive address. */
1419 DEBUGOUT("Programming MAC Address into RAR[0]\n");
5c5e707a
SG		 1420 addr_low = (enetaddr[0] |
1421 (enetaddr[1] << 8) |
1422 (enetaddr[2] << 16) | (enetaddr[3] << 24));
682011ff 1423
5c5e707a 1424 addr_high = (enetaddr[4] | (enetaddr[5] << 8) | E1000_RAH_AV);
682011ff
WD		 1425
1426 E1000_WRITE_REG_ARRAY(hw, RA, 0, addr_low);
1427 E1000_WRITE_REG_ARRAY(hw, RA, 1, addr_high);
1428
1429 /* Zero out the other 15 receive addresses. */
1430 DEBUGOUT("Clearing RAR[1-15]\n");
1431 for (i = 1; i < E1000_RAR_ENTRIES; i++) {
1432 E1000_WRITE_REG_ARRAY(hw, RA, (i << 1), 0);
1433 E1000_WRITE_REG_ARRAY(hw, RA, ((i << 1) + 1), 0);
1434 }
1435}
1436
1437/******************************************************************************
1438 * Clears the VLAN filer table
1439 *
1440 * hw - Struct containing variables accessed by shared code
1441 *****************************************************************************/
1442static void
1443e1000_clear_vfta(struct e1000_hw *hw)
1444{
1445 uint32_t offset;
1446
1447 for (offset = 0; offset < E1000_VLAN_FILTER_TBL_SIZE; offset++)
1448 E1000_WRITE_REG_ARRAY(hw, VFTA, offset, 0);
1449}
1450
1451/******************************************************************************
1452 * Set the mac type member in the hw struct.
8bde7f77 1453 *
682011ff
WD		 1454 * hw - Struct containing variables accessed by shared code
1455 *****************************************************************************/
aa070789 1456int32_t
682011ff
WD		 1457e1000_set_mac_type(struct e1000_hw *hw)
1458{
1459 DEBUGFUNC();
1460
1461 switch (hw->device_id) {
1462 case E1000_DEV_ID_82542:
1463 switch (hw->revision_id) {
1464 case E1000_82542_2_0_REV_ID:
1465 hw->mac_type = e1000_82542_rev2_0;
1466 break;
1467 case E1000_82542_2_1_REV_ID:
1468 hw->mac_type = e1000_82542_rev2_1;
1469 break;
1470 default:
1471 /* Invalid 82542 revision ID */
1472 return -E1000_ERR_MAC_TYPE;
1473 }
1474 break;
1475 case E1000_DEV_ID_82543GC_FIBER:
1476 case E1000_DEV_ID_82543GC_COPPER:
1477 hw->mac_type = e1000_82543;
1478 break;
1479 case E1000_DEV_ID_82544EI_COPPER:
1480 case E1000_DEV_ID_82544EI_FIBER:
1481 case E1000_DEV_ID_82544GC_COPPER:
1482 case E1000_DEV_ID_82544GC_LOM:
1483 hw->mac_type = e1000_82544;
1484 break;
1485 case E1000_DEV_ID_82540EM:
1486 case E1000_DEV_ID_82540EM_LOM:
aa070789
RZ		 1487 case E1000_DEV_ID_82540EP:
1488 case E1000_DEV_ID_82540EP_LOM:
1489 case E1000_DEV_ID_82540EP_LP:
682011ff
WD		 1490 hw->mac_type = e1000_82540;
1491 break;
1492 case E1000_DEV_ID_82545EM_COPPER:
1493 case E1000_DEV_ID_82545EM_FIBER:
1494 hw->mac_type = e1000_82545;
1495 break;
aa070789
RZ		 1496 case E1000_DEV_ID_82545GM_COPPER:
1497 case E1000_DEV_ID_82545GM_FIBER:
1498 case E1000_DEV_ID_82545GM_SERDES:
1499 hw->mac_type = e1000_82545_rev_3;
1500 break;
682011ff
WD		 1501 case E1000_DEV_ID_82546EB_COPPER:
1502 case E1000_DEV_ID_82546EB_FIBER:
aa070789 1503 case E1000_DEV_ID_82546EB_QUAD_COPPER:
682011ff
WD		 1504 hw->mac_type = e1000_82546;
1505 break;
aa070789
RZ		 1506 case E1000_DEV_ID_82546GB_COPPER:
1507 case E1000_DEV_ID_82546GB_FIBER:
1508 case E1000_DEV_ID_82546GB_SERDES:
1509 case E1000_DEV_ID_82546GB_PCIE:
1510 case E1000_DEV_ID_82546GB_QUAD_COPPER:
1511 case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3:
1512 hw->mac_type = e1000_82546_rev_3;
1513 break;
1514 case E1000_DEV_ID_82541EI:
1515 case E1000_DEV_ID_82541EI_MOBILE:
1516 case E1000_DEV_ID_82541ER_LOM:
1517 hw->mac_type = e1000_82541;
1518 break;
ac3315c2 1519 case E1000_DEV_ID_82541ER:
aa070789 1520 case E1000_DEV_ID_82541GI:
aa3b8bf9 1521 case E1000_DEV_ID_82541GI_LF:
aa070789 1522 case E1000_DEV_ID_82541GI_MOBILE:
1aeed8d7
WD		 1523 hw->mac_type = e1000_82541_rev_2;
1524 break;
aa070789
RZ		 1525 case E1000_DEV_ID_82547EI:
1526 case E1000_DEV_ID_82547EI_MOBILE:
1527 hw->mac_type = e1000_82547;
1528 break;
1529 case E1000_DEV_ID_82547GI:
1530 hw->mac_type = e1000_82547_rev_2;
1531 break;
1532 case E1000_DEV_ID_82571EB_COPPER:
1533 case E1000_DEV_ID_82571EB_FIBER:
1534 case E1000_DEV_ID_82571EB_SERDES:
1535 case E1000_DEV_ID_82571EB_SERDES_DUAL:
1536 case E1000_DEV_ID_82571EB_SERDES_QUAD:
1537 case E1000_DEV_ID_82571EB_QUAD_COPPER:
1538 case E1000_DEV_ID_82571PT_QUAD_COPPER:
1539 case E1000_DEV_ID_82571EB_QUAD_FIBER:
1540 case E1000_DEV_ID_82571EB_QUAD_COPPER_LOWPROFILE:
1541 hw->mac_type = e1000_82571;
1542 break;
1543 case E1000_DEV_ID_82572EI_COPPER:
1544 case E1000_DEV_ID_82572EI_FIBER:
1545 case E1000_DEV_ID_82572EI_SERDES:
1546 case E1000_DEV_ID_82572EI:
1547 hw->mac_type = e1000_82572;
1548 break;
1549 case E1000_DEV_ID_82573E:
1550 case E1000_DEV_ID_82573E_IAMT:
1551 case E1000_DEV_ID_82573L:
1552 hw->mac_type = e1000_82573;
1553 break;
2c2668f9
RZ		 1554 case E1000_DEV_ID_82574L:
1555 hw->mac_type = e1000_82574;
1556 break;
aa070789
RZ		 1557 case E1000_DEV_ID_80003ES2LAN_COPPER_SPT:
1558 case E1000_DEV_ID_80003ES2LAN_SERDES_SPT:
1559 case E1000_DEV_ID_80003ES2LAN_COPPER_DPT:
1560 case E1000_DEV_ID_80003ES2LAN_SERDES_DPT:
1561 hw->mac_type = e1000_80003es2lan;
1562 break;
1563 case E1000_DEV_ID_ICH8_IGP_M_AMT:
1564 case E1000_DEV_ID_ICH8_IGP_AMT:
1565 case E1000_DEV_ID_ICH8_IGP_C:
1566 case E1000_DEV_ID_ICH8_IFE:
1567 case E1000_DEV_ID_ICH8_IFE_GT:
1568 case E1000_DEV_ID_ICH8_IFE_G:
1569 case E1000_DEV_ID_ICH8_IGP_M:
1570 hw->mac_type = e1000_ich8lan;
1571 break;
6c499abe
MZ		 1572 case PCI_DEVICE_ID_INTEL_I210_UNPROGRAMMED:
1573 case PCI_DEVICE_ID_INTEL_I211_UNPROGRAMMED:
95186063 1574 case PCI_DEVICE_ID_INTEL_I210_COPPER:
6c499abe 1575 case PCI_DEVICE_ID_INTEL_I211_COPPER:
95186063
MV		 1576 case PCI_DEVICE_ID_INTEL_I210_COPPER_FLASHLESS:
1577 case PCI_DEVICE_ID_INTEL_I210_SERDES:
1578 case PCI_DEVICE_ID_INTEL_I210_SERDES_FLASHLESS:
1579 case PCI_DEVICE_ID_INTEL_I210_1000BASEKX:
85d44e42
MA		 1580 case PCI_DEVICE_ID_INTEL_I225_UNPROGRAMMED:
1581 case PCI_DEVICE_ID_INTEL_I225_IT:
95186063
MV		 1582 hw->mac_type = e1000_igb;
1583 break;
682011ff
WD		 1584 default:
1585 /* Should never have loaded on this device */
1586 return -E1000_ERR_MAC_TYPE;
1587 }
1588 return E1000_SUCCESS;
1589}
1590
1591/******************************************************************************
1592 * Reset the transmit and receive units; mask and clear all interrupts.
1593 *
1594 * hw - Struct containing variables accessed by shared code
1595 *****************************************************************************/
1596void
1597e1000_reset_hw(struct e1000_hw *hw)
1598{
1599 uint32_t ctrl;
1600 uint32_t ctrl_ext;
682011ff 1601 uint32_t manc;
9ea005fb 1602 uint32_t pba = 0;
95186063 1603 uint32_t reg;
682011ff
WD		 1604
1605 DEBUGFUNC();
1606
9ea005fb
RZ		 1607 /* get the correct pba value for both PCI and PCIe*/
1608 if (hw->mac_type < e1000_82571)
1609 pba = E1000_DEFAULT_PCI_PBA;
1610 else
1611 pba = E1000_DEFAULT_PCIE_PBA;
1612
682011ff
WD		 1613 /* For 82542 (rev 2.0), disable MWI before issuing a device reset */
1614 if (hw->mac_type == e1000_82542_rev2_0) {
1615 DEBUGOUT("Disabling MWI on 82542 rev 2.0\n");
81dab9af
BM		 1616 dm_pci_write_config16(hw->pdev, PCI_COMMAND,
1617 hw->pci_cmd_word & ~PCI_COMMAND_INVALIDATE);
682011ff
WD		 1618 }
1619
1620 /* Clear interrupt mask to stop board from generating interrupts */
1621 DEBUGOUT("Masking off all interrupts\n");
95186063
MV		 1622 if (hw->mac_type == e1000_igb)
1623 E1000_WRITE_REG(hw, I210_IAM, 0);
682011ff
WD		 1624 E1000_WRITE_REG(hw, IMC, 0xffffffff);
1625
1626 /* Disable the Transmit and Receive units. Then delay to allow
1627 * any pending transactions to complete before we hit the MAC with
1628 * the global reset.
1629 */
1630 E1000_WRITE_REG(hw, RCTL, 0);
1631 E1000_WRITE_REG(hw, TCTL, E1000_TCTL_PSP);
1632 E1000_WRITE_FLUSH(hw);
1633
c90778ad
CG		 1634 if (hw->mac_type == e1000_igb) {
1635 E1000_WRITE_REG(hw, RXPBS, I210_RXPBSIZE_DEFAULT);
1636 E1000_WRITE_REG(hw, TXPBS, I210_TXPBSIZE_DEFAULT);
1637 }
1638
682011ff 1639 /* The tbi_compatibility_on Flag must be cleared when Rctl is cleared. */
472d5460 1640 hw->tbi_compatibility_on = false;
682011ff
WD		 1641
1642 /* Delay to allow any outstanding PCI transactions to complete before
1643 * resetting the device
1644 */
1645 mdelay(10);
1646
1647 /* Issue a global reset to the MAC. This will reset the chip's
1648 * transmit, receive, DMA, and link units. It will not effect
1649 * the current PCI configuration. The global reset bit is self-
1650 * clearing, and should clear within a microsecond.
1651 */
1652 DEBUGOUT("Issuing a global reset to MAC\n");
1653 ctrl = E1000_READ_REG(hw, CTRL);
1654
aa070789 1655 E1000_WRITE_REG(hw, CTRL, (ctrl | E1000_CTRL_RST));
682011ff
WD		 1656
1657 /* Force a reload from the EEPROM if necessary */
95186063
MV		 1658 if (hw->mac_type == e1000_igb) {
1659 mdelay(20);
1660 reg = E1000_READ_REG(hw, STATUS);
1661 if (reg & E1000_STATUS_PF_RST_DONE)
1662 DEBUGOUT("PF OK\n");
1663 reg = E1000_READ_REG(hw, I210_EECD);
1664 if (reg & E1000_EECD_AUTO_RD)
1665 DEBUGOUT("EEC OK\n");
1666 } else if (hw->mac_type < e1000_82540) {
682011ff
WD		 1667 /* Wait for reset to complete */
1668 udelay(10);
1669 ctrl_ext = E1000_READ_REG(hw, CTRL_EXT);
1670 ctrl_ext |= E1000_CTRL_EXT_EE_RST;
1671 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
1672 E1000_WRITE_FLUSH(hw);
1673 /* Wait for EEPROM reload */
1674 mdelay(2);
1675 } else {
1676 /* Wait for EEPROM reload (it happens automatically) */
1677 mdelay(4);
1678 /* Dissable HW ARPs on ASF enabled adapters */
1679 manc = E1000_READ_REG(hw, MANC);
1680 manc &= ~(E1000_MANC_ARP_EN);
1681 E1000_WRITE_REG(hw, MANC, manc);
1682 }
1683
1684 /* Clear interrupt mask to stop board from generating interrupts */
1685 DEBUGOUT("Masking off all interrupts\n");
95186063
MV		 1686 if (hw->mac_type == e1000_igb)
1687 E1000_WRITE_REG(hw, I210_IAM, 0);
682011ff
WD		 1688 E1000_WRITE_REG(hw, IMC, 0xffffffff);
1689
1690 /* Clear any pending interrupt events. */
56b13b1e 1691 E1000_READ_REG(hw, ICR);
682011ff
WD		 1692
1693 /* If MWI was previously enabled, reenable it. */
1694 if (hw->mac_type == e1000_82542_rev2_0) {
81dab9af 1695 dm_pci_write_config16(hw->pdev, PCI_COMMAND, hw->pci_cmd_word);
682011ff 1696 }
95186063
MV		 1697 if (hw->mac_type != e1000_igb)
1698 E1000_WRITE_REG(hw, PBA, pba);
aa070789
RZ		 1699}
1700
1701/******************************************************************************
1702 *
1703 * Initialize a number of hardware-dependent bits
1704 *
1705 * hw: Struct containing variables accessed by shared code
1706 *
1707 * This function contains hardware limitation workarounds for PCI-E adapters
1708 *
1709 *****************************************************************************/
1710static void
1711e1000_initialize_hardware_bits(struct e1000_hw *hw)
1712{
1713 if ((hw->mac_type >= e1000_82571) &&
1714 (!hw->initialize_hw_bits_disable)) {
1715 /* Settings common to all PCI-express silicon */
1716 uint32_t reg_ctrl, reg_ctrl_ext;
1717 uint32_t reg_tarc0, reg_tarc1;
1718 uint32_t reg_tctl;
1719 uint32_t reg_txdctl, reg_txdctl1;
1720
1721 /* link autonegotiation/sync workarounds */
1722 reg_tarc0 = E1000_READ_REG(hw, TARC0);
1723 reg_tarc0 &= ~((1 << 30)|(1 << 29)|(1 << 28)|(1 << 27));
1724
1725 /* Enable not-done TX descriptor counting */
1726 reg_txdctl = E1000_READ_REG(hw, TXDCTL);
1727 reg_txdctl |= E1000_TXDCTL_COUNT_DESC;
1728 E1000_WRITE_REG(hw, TXDCTL, reg_txdctl);
1729
1730 reg_txdctl1 = E1000_READ_REG(hw, TXDCTL1);
1731 reg_txdctl1 |= E1000_TXDCTL_COUNT_DESC;
1732 E1000_WRITE_REG(hw, TXDCTL1, reg_txdctl1);
1733
95186063 1734
aa070789 1735 switch (hw->mac_type) {
063bb708
AP		 1736 case e1000_igb: /* IGB is cool */
1737 return;
aa070789
RZ		 1738 case e1000_82571:
1739 case e1000_82572:
1740 /* Clear PHY TX compatible mode bits */
1741 reg_tarc1 = E1000_READ_REG(hw, TARC1);
1742 reg_tarc1 &= ~((1 << 30)|(1 << 29));
1743
1744 /* link autonegotiation/sync workarounds */
1745 reg_tarc0 |= ((1 << 26)|(1 << 25)|(1 << 24)|(1 << 23));
1746
1747 /* TX ring control fixes */
1748 reg_tarc1 |= ((1 << 26)|(1 << 25)|(1 << 24));
1749
1750 /* Multiple read bit is reversed polarity */
1751 reg_tctl = E1000_READ_REG(hw, TCTL);
1752 if (reg_tctl & E1000_TCTL_MULR)
1753 reg_tarc1 &= ~(1 << 28);
1754 else
1755 reg_tarc1 |= (1 << 28);
1756
1757 E1000_WRITE_REG(hw, TARC1, reg_tarc1);
1758 break;
1759 case e1000_82573:
2c2668f9 1760 case e1000_82574:
aa070789
RZ		 1761 reg_ctrl_ext = E1000_READ_REG(hw, CTRL_EXT);
1762 reg_ctrl_ext &= ~(1 << 23);
1763 reg_ctrl_ext |= (1 << 22);
1764
1765 /* TX byte count fix */
1766 reg_ctrl = E1000_READ_REG(hw, CTRL);
1767 reg_ctrl &= ~(1 << 29);
1768
1769 E1000_WRITE_REG(hw, CTRL_EXT, reg_ctrl_ext);
1770 E1000_WRITE_REG(hw, CTRL, reg_ctrl);
1771 break;
1772 case e1000_80003es2lan:
1773 /* improve small packet performace for fiber/serdes */
1774 if ((hw->media_type == e1000_media_type_fiber)
1775 || (hw->media_type ==
1776 e1000_media_type_internal_serdes)) {
1777 reg_tarc0 &= ~(1 << 20);
1778 }
1779
1780 /* Multiple read bit is reversed polarity */
1781 reg_tctl = E1000_READ_REG(hw, TCTL);
1782 reg_tarc1 = E1000_READ_REG(hw, TARC1);
1783 if (reg_tctl & E1000_TCTL_MULR)
1784 reg_tarc1 &= ~(1 << 28);
1785 else
1786 reg_tarc1 |= (1 << 28);
1787
1788 E1000_WRITE_REG(hw, TARC1, reg_tarc1);
1789 break;
1790 case e1000_ich8lan:
1791 /* Reduce concurrent DMA requests to 3 from 4 */
1792 if ((hw->revision_id < 3) ||
1793 ((hw->device_id != E1000_DEV_ID_ICH8_IGP_M_AMT) &&
1794 (hw->device_id != E1000_DEV_ID_ICH8_IGP_M)))
1795 reg_tarc0 |= ((1 << 29)|(1 << 28));
1796
1797 reg_ctrl_ext = E1000_READ_REG(hw, CTRL_EXT);
1798 reg_ctrl_ext |= (1 << 22);
1799 E1000_WRITE_REG(hw, CTRL_EXT, reg_ctrl_ext);
1800
1801 /* workaround TX hang with TSO=on */
1802 reg_tarc0 |= ((1 << 27)|(1 << 26)|(1 << 24)|(1 << 23));
1803
1804 /* Multiple read bit is reversed polarity */
1805 reg_tctl = E1000_READ_REG(hw, TCTL);
1806 reg_tarc1 = E1000_READ_REG(hw, TARC1);
1807 if (reg_tctl & E1000_TCTL_MULR)
1808 reg_tarc1 &= ~(1 << 28);
1809 else
1810 reg_tarc1 |= (1 << 28);
1811
1812 /* workaround TX hang with TSO=on */
1813 reg_tarc1 |= ((1 << 30)|(1 << 26)|(1 << 24));
1814
1815 E1000_WRITE_REG(hw, TARC1, reg_tarc1);
1816 break;
1817 default:
1818 break;
1819 }
1820
1821 E1000_WRITE_REG(hw, TARC0, reg_tarc0);
1822 }
682011ff
WD		 1823}
1824
1825/******************************************************************************
1826 * Performs basic configuration of the adapter.
1827 *
1828 * hw - Struct containing variables accessed by shared code
8bde7f77
WD		 1829 *
1830 * Assumes that the controller has previously been reset and is in a
682011ff
WD		 1831 * post-reset uninitialized state. Initializes the receive address registers,
1832 * multicast table, and VLAN filter table. Calls routines to setup link
1833 * configuration and flow control settings. Clears all on-chip counters. Leaves
1834 * the transmit and receive units disabled and uninitialized.
1835 *****************************************************************************/
1836static int
5c5e707a 1837e1000_init_hw(struct e1000_hw *hw, unsigned char enetaddr[6])
682011ff 1838{
aa070789 1839 uint32_t ctrl;
682011ff
WD		 1840 uint32_t i;
1841 int32_t ret_val;
1842 uint16_t pcix_cmd_word;
1843 uint16_t pcix_stat_hi_word;
1844 uint16_t cmd_mmrbc;
1845 uint16_t stat_mmrbc;
aa070789
RZ		 1846 uint32_t mta_size;
1847 uint32_t reg_data;
1848 uint32_t ctrl_ext;
682011ff 1849 DEBUGFUNC();
aa070789
RZ		 1850 /* force full DMA clock frequency for 10/100 on ICH8 A0-B0 */
1851 if ((hw->mac_type == e1000_ich8lan) &&
1852 ((hw->revision_id < 3) ||
1853 ((hw->device_id != E1000_DEV_ID_ICH8_IGP_M_AMT) &&
1854 (hw->device_id != E1000_DEV_ID_ICH8_IGP_M)))) {
1855 reg_data = E1000_READ_REG(hw, STATUS);
1856 reg_data &= ~0x80000000;
1857 E1000_WRITE_REG(hw, STATUS, reg_data);
682011ff 1858 }
aa070789 1859 /* Do not need initialize Identification LED */
682011ff 1860
aa070789
RZ		 1861 /* Set the media type and TBI compatibility */
1862 e1000_set_media_type(hw);
1863
1864 /* Must be called after e1000_set_media_type
1865 * because media_type is used */
1866 e1000_initialize_hardware_bits(hw);
682011ff
WD		 1867
1868 /* Disabling VLAN filtering. */
1869 DEBUGOUT("Initializing the IEEE VLAN\n");
aa070789
RZ		 1870 /* VET hardcoded to standard value and VFTA removed in ICH8 LAN */
1871 if (hw->mac_type != e1000_ich8lan) {
1872 if (hw->mac_type < e1000_82545_rev_3)
1873 E1000_WRITE_REG(hw, VET, 0);
1874 e1000_clear_vfta(hw);
1875 }
682011ff
WD		 1876
1877 /* For 82542 (rev 2.0), disable MWI and put the receiver into reset */
1878 if (hw->mac_type == e1000_82542_rev2_0) {
1879 DEBUGOUT("Disabling MWI on 82542 rev 2.0\n");
81dab9af
BM		 1880 dm_pci_write_config16(hw->pdev, PCI_COMMAND,
1881 hw->
1882 pci_cmd_word & ~PCI_COMMAND_INVALIDATE);
682011ff
WD		 1883 E1000_WRITE_REG(hw, RCTL, E1000_RCTL_RST);
1884 E1000_WRITE_FLUSH(hw);
1885 mdelay(5);
1886 }
1887
1888 /* Setup the receive address. This involves initializing all of the Receive
1889 * Address Registers (RARs 0 - 15).
1890 */
5c5e707a 1891 e1000_init_rx_addrs(hw, enetaddr);
682011ff
WD		 1892
1893 /* For 82542 (rev 2.0), take the receiver out of reset and enable MWI */
1894 if (hw->mac_type == e1000_82542_rev2_0) {
1895 E1000_WRITE_REG(hw, RCTL, 0);
1896 E1000_WRITE_FLUSH(hw);
1897 mdelay(1);
81dab9af 1898 dm_pci_write_config16(hw->pdev, PCI_COMMAND, hw->pci_cmd_word);
682011ff
WD		 1899 }
1900
1901 /* Zero out the Multicast HASH table */
1902 DEBUGOUT("Zeroing the MTA\n");
aa070789
RZ		 1903 mta_size = E1000_MC_TBL_SIZE;
1904 if (hw->mac_type == e1000_ich8lan)
1905 mta_size = E1000_MC_TBL_SIZE_ICH8LAN;
1906 for (i = 0; i < mta_size; i++) {
682011ff 1907 E1000_WRITE_REG_ARRAY(hw, MTA, i, 0);
aa070789
RZ		 1908 /* use write flush to prevent Memory Write Block (MWB) from
1909 * occuring when accessing our register space */
1910 E1000_WRITE_FLUSH(hw);
1911 }
e97f7fbb 1912
aa070789
RZ		 1913 switch (hw->mac_type) {
1914 case e1000_82545_rev_3:
1915 case e1000_82546_rev_3:
95186063 1916 case e1000_igb:
aa070789
RZ		 1917 break;
1918 default:
682011ff 1919 /* Workaround for PCI-X problem when BIOS sets MMRBC incorrectly. */
aa070789 1920 if (hw->bus_type == e1000_bus_type_pcix) {
81dab9af
BM		 1921 dm_pci_read_config16(hw->pdev, PCIX_COMMAND_REGISTER,
1922 &pcix_cmd_word);
1923 dm_pci_read_config16(hw->pdev, PCIX_STATUS_REGISTER_HI,
1924 &pcix_stat_hi_word);
682011ff
WD		 1925 cmd_mmrbc =
1926 (pcix_cmd_word & PCIX_COMMAND_MMRBC_MASK) >>
1927 PCIX_COMMAND_MMRBC_SHIFT;
1928 stat_mmrbc =
1929 (pcix_stat_hi_word & PCIX_STATUS_HI_MMRBC_MASK) >>
1930 PCIX_STATUS_HI_MMRBC_SHIFT;
1931 if (stat_mmrbc == PCIX_STATUS_HI_MMRBC_4K)
1932 stat_mmrbc = PCIX_STATUS_HI_MMRBC_2K;
1933 if (cmd_mmrbc > stat_mmrbc) {
1934 pcix_cmd_word &= ~PCIX_COMMAND_MMRBC_MASK;
1935 pcix_cmd_word |= stat_mmrbc << PCIX_COMMAND_MMRBC_SHIFT;
81dab9af
BM		 1936 dm_pci_write_config16(hw->pdev, PCIX_COMMAND_REGISTER,
1937 pcix_cmd_word);
682011ff
WD		 1938 }
1939 }
aa070789
RZ		 1940 break;
1941 }
1942
1943 /* More time needed for PHY to initialize */
1944 if (hw->mac_type == e1000_ich8lan)
1945 mdelay(15);
95186063
MV		 1946 if (hw->mac_type == e1000_igb)
1947 mdelay(15);
682011ff
WD		 1948
1949 /* Call a subroutine to configure the link and setup flow control. */
5c5e707a 1950 ret_val = e1000_setup_link(hw);
682011ff
WD		 1951
1952 /* Set the transmit descriptor write-back policy */
1953 if (hw->mac_type > e1000_82544) {
1954 ctrl = E1000_READ_REG(hw, TXDCTL);
1955 ctrl =
1956 (ctrl & ~E1000_TXDCTL_WTHRESH) |
1957 E1000_TXDCTL_FULL_TX_DESC_WB;
1958 E1000_WRITE_REG(hw, TXDCTL, ctrl);
1959 }
aa070789 1960
776e66e8 1961 /* Set the receive descriptor write back policy */
776e66e8
RG		 1962 if (hw->mac_type >= e1000_82571) {
1963 ctrl = E1000_READ_REG(hw, RXDCTL);
1964 ctrl =
1965 (ctrl & ~E1000_RXDCTL_WTHRESH) |
1966 E1000_RXDCTL_FULL_RX_DESC_WB;
1967 E1000_WRITE_REG(hw, RXDCTL, ctrl);
1968 }
1969
aa070789
RZ		 1970 switch (hw->mac_type) {
1971 default:
1972 break;
1973 case e1000_80003es2lan:
1974 /* Enable retransmit on late collisions */
1975 reg_data = E1000_READ_REG(hw, TCTL);
1976 reg_data |= E1000_TCTL_RTLC;
1977 E1000_WRITE_REG(hw, TCTL, reg_data);
1978
1979 /* Configure Gigabit Carry Extend Padding */
1980 reg_data = E1000_READ_REG(hw, TCTL_EXT);
1981 reg_data &= ~E1000_TCTL_EXT_GCEX_MASK;
1982 reg_data |= DEFAULT_80003ES2LAN_TCTL_EXT_GCEX;
1983 E1000_WRITE_REG(hw, TCTL_EXT, reg_data);
1984
1985 /* Configure Transmit Inter-Packet Gap */
1986 reg_data = E1000_READ_REG(hw, TIPG);
1987 reg_data &= ~E1000_TIPG_IPGT_MASK;
1988 reg_data |= DEFAULT_80003ES2LAN_TIPG_IPGT_1000;
1989 E1000_WRITE_REG(hw, TIPG, reg_data);
1990
1991 reg_data = E1000_READ_REG_ARRAY(hw, FFLT, 0x0001);
1992 reg_data &= ~0x00100000;
1993 E1000_WRITE_REG_ARRAY(hw, FFLT, 0x0001, reg_data);
1994 /* Fall through */
1995 case e1000_82571:
1996 case e1000_82572:
1997 case e1000_ich8lan:
1998 ctrl = E1000_READ_REG(hw, TXDCTL1);
1999 ctrl = (ctrl & ~E1000_TXDCTL_WTHRESH)
2000 | E1000_TXDCTL_FULL_TX_DESC_WB;
2001 E1000_WRITE_REG(hw, TXDCTL1, ctrl);
2002 break;
2c2668f9
RZ		 2003 case e1000_82573:
2004 case e1000_82574:
2005 reg_data = E1000_READ_REG(hw, GCR);
2006 reg_data |= E1000_GCR_L1_ACT_WITHOUT_L0S_RX;
2007 E1000_WRITE_REG(hw, GCR, reg_data);
95186063
MV		 2008 case e1000_igb:
2009 break;
aa070789
RZ		 2010 }
2011
aa070789
RZ		 2012 if (hw->device_id == E1000_DEV_ID_82546GB_QUAD_COPPER ||
2013 hw->device_id == E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3) {
2014 ctrl_ext = E1000_READ_REG(hw, CTRL_EXT);
2015 /* Relaxed ordering must be disabled to avoid a parity
2016 * error crash in a PCI slot. */
2017 ctrl_ext |= E1000_CTRL_EXT_RO_DIS;
2018 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
2019 }
2020
682011ff
WD		 2021 return ret_val;
2022}
2023
2024/******************************************************************************
2025 * Configures flow control and link settings.
8bde7f77 2026 *
682011ff 2027 * hw - Struct containing variables accessed by shared code
8bde7f77 2028 *
682011ff
WD		 2029 * Determines which flow control settings to use. Calls the apropriate media-
2030 * specific link configuration function. Configures the flow control settings.
2031 * Assuming the adapter has a valid link partner, a valid link should be
8bde7f77 2032 * established. Assumes the hardware has previously been reset and the
682011ff
WD		 2033 * transmitter and receiver are not enabled.
2034 *****************************************************************************/
2035static int
5c5e707a 2036e1000_setup_link(struct e1000_hw *hw)
682011ff 2037{
682011ff 2038 int32_t ret_val;
8712adfd
RI		 2039#ifndef CONFIG_E1000_NO_NVM
2040 uint32_t ctrl_ext;
682011ff 2041 uint16_t eeprom_data;
8712adfd 2042#endif
682011ff
WD		 2043
2044 DEBUGFUNC();
2045
aa070789
RZ		 2046 /* In the case of the phy reset being blocked, we already have a link.
2047 * We do not have to set it up again. */
2048 if (e1000_check_phy_reset_block(hw))
2049 return E1000_SUCCESS;
2050
8712adfd 2051#ifndef CONFIG_E1000_NO_NVM
682011ff
WD		 2052 /* Read and store word 0x0F of the EEPROM. This word contains bits
2053 * that determine the hardware's default PAUSE (flow control) mode,
2054 * a bit that determines whether the HW defaults to enabling or
2055 * disabling auto-negotiation, and the direction of the
2056 * SW defined pins. If there is no SW over-ride of the flow
2057 * control setting, then the variable hw->fc will
2058 * be initialized based on a value in the EEPROM.
2059 */
aa070789
RZ		 2060 if (e1000_read_eeprom(hw, EEPROM_INIT_CONTROL2_REG, 1,
2061 &eeprom_data) < 0) {
682011ff
WD		 2062 DEBUGOUT("EEPROM Read Error\n");
2063 return -E1000_ERR_EEPROM;
2064 }
8712adfd 2065#endif
682011ff 2066 if (hw->fc == e1000_fc_default) {
aa070789
RZ		 2067 switch (hw->mac_type) {
2068 case e1000_ich8lan:
2069 case e1000_82573:
2c2668f9 2070 case e1000_82574:
95186063 2071 case e1000_igb:
682011ff 2072 hw->fc = e1000_fc_full;
aa070789
RZ		 2073 break;
2074 default:
8712adfd 2075#ifndef CONFIG_E1000_NO_NVM
aa070789
RZ		 2076 ret_val = e1000_read_eeprom(hw,
2077 EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data);
2078 if (ret_val) {
2079 DEBUGOUT("EEPROM Read Error\n");
2080 return -E1000_ERR_EEPROM;
2081 }
aa070789
RZ		 2082 if ((eeprom_data & EEPROM_WORD0F_PAUSE_MASK) == 0)
2083 hw->fc = e1000_fc_none;
2084 else if ((eeprom_data & EEPROM_WORD0F_PAUSE_MASK) ==
2085 EEPROM_WORD0F_ASM_DIR)
2086 hw->fc = e1000_fc_tx_pause;
2087 else
8712adfd 2088#endif
aa070789
RZ		 2089 hw->fc = e1000_fc_full;
2090 break;
2091 }
682011ff
WD		 2092 }
2093
2094 /* We want to save off the original Flow Control configuration just
2095 * in case we get disconnected and then reconnected into a different
2096 * hub or switch with different Flow Control capabilities.
2097 */
2098 if (hw->mac_type == e1000_82542_rev2_0)
2099 hw->fc &= (~e1000_fc_tx_pause);
2100
2101 if ((hw->mac_type < e1000_82543) && (hw->report_tx_early == 1))
2102 hw->fc &= (~e1000_fc_rx_pause);
2103
2104 hw->original_fc = hw->fc;
2105
2106 DEBUGOUT("After fix-ups FlowControl is now = %x\n", hw->fc);
2107
8712adfd 2108#ifndef CONFIG_E1000_NO_NVM
682011ff
WD		 2109 /* Take the 4 bits from EEPROM word 0x0F that determine the initial
2110 * polarity value for the SW controlled pins, and setup the
2111 * Extended Device Control reg with that info.
2112 * This is needed because one of the SW controlled pins is used for
2113 * signal detection. So this should be done before e1000_setup_pcs_link()
2114 * or e1000_phy_setup() is called.
2115 */
2116 if (hw->mac_type == e1000_82543) {
2117 ctrl_ext = ((eeprom_data & EEPROM_WORD0F_SWPDIO_EXT) <<
2118 SWDPIO__EXT_SHIFT);
2119 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
2120 }
8712adfd 2121#endif
682011ff
WD		 2122
2123 /* Call the necessary subroutine to configure the link. */
2124 ret_val = (hw->media_type == e1000_media_type_fiber) ?
5c5e707a 2125 e1000_setup_fiber_link(hw) : e1000_setup_copper_link(hw);
682011ff
WD		 2126 if (ret_val < 0) {
2127 return ret_val;
2128 }
2129
2130 /* Initialize the flow control address, type, and PAUSE timer
2131 * registers to their default values. This is done even if flow
2132 * control is disabled, because it does not hurt anything to
2133 * initialize these registers.
2134 */
aa070789
RZ		 2135 DEBUGOUT("Initializing the Flow Control address, type"
2136 "and timer regs\n");
2137
2138 /* FCAL/H and FCT are hardcoded to standard values in e1000_ich8lan. */
2139 if (hw->mac_type != e1000_ich8lan) {
2140 E1000_WRITE_REG(hw, FCT, FLOW_CONTROL_TYPE);
2141 E1000_WRITE_REG(hw, FCAH, FLOW_CONTROL_ADDRESS_HIGH);
2142 E1000_WRITE_REG(hw, FCAL, FLOW_CONTROL_ADDRESS_LOW);
2143 }
682011ff 2144
682011ff
WD		 2145 E1000_WRITE_REG(hw, FCTTV, hw->fc_pause_time);
2146
2147 /* Set the flow control receive threshold registers. Normally,
2148 * these registers will be set to a default threshold that may be
2149 * adjusted later by the driver's runtime code. However, if the
2150 * ability to transmit pause frames in not enabled, then these
8bde7f77 2151 * registers will be set to 0.
682011ff
WD		 2152 */
2153 if (!(hw->fc & e1000_fc_tx_pause)) {
2154 E1000_WRITE_REG(hw, FCRTL, 0);
2155 E1000_WRITE_REG(hw, FCRTH, 0);
2156 } else {
2157 /* We need to set up the Receive Threshold high and low water marks
2158 * as well as (optionally) enabling the transmission of XON frames.
2159 */
2160 if (hw->fc_send_xon) {
2161 E1000_WRITE_REG(hw, FCRTL,
2162 (hw->fc_low_water | E1000_FCRTL_XONE));
2163 E1000_WRITE_REG(hw, FCRTH, hw->fc_high_water);
2164 } else {
2165 E1000_WRITE_REG(hw, FCRTL, hw->fc_low_water);
2166 E1000_WRITE_REG(hw, FCRTH, hw->fc_high_water);
2167 }
2168 }
2169 return ret_val;
2170}
2171
2172/******************************************************************************
2173 * Sets up link for a fiber based adapter
2174 *
2175 * hw - Struct containing variables accessed by shared code
2176 *
2177 * Manipulates Physical Coding Sublayer functions in order to configure
2178 * link. Assumes the hardware has been previously reset and the transmitter
2179 * and receiver are not enabled.
2180 *****************************************************************************/
2181static int
5c5e707a 2182e1000_setup_fiber_link(struct e1000_hw *hw)
682011ff 2183{
682011ff
WD		 2184 uint32_t ctrl;
2185 uint32_t status;
2186 uint32_t txcw = 0;
2187 uint32_t i;
2188 uint32_t signal;
2189 int32_t ret_val;
2190
2191 DEBUGFUNC();
8bde7f77
WD		 2192 /* On adapters with a MAC newer that 82544, SW Defineable pin 1 will be
2193 * set when the optics detect a signal. On older adapters, it will be
682011ff
WD		 2194 * cleared when there is a signal
2195 */
2196 ctrl = E1000_READ_REG(hw, CTRL);
2197 if ((hw->mac_type > e1000_82544) && !(ctrl & E1000_CTRL_ILOS))
2198 signal = E1000_CTRL_SWDPIN1;
2199 else
2200 signal = 0;
2201
5c5e707a 2202 printf("signal for %s is %x (ctrl %08x)!!!!\n", hw->name, signal,
682011ff
WD		 2203 ctrl);
2204 /* Take the link out of reset */
2205 ctrl &= ~(E1000_CTRL_LRST);
2206
2207 e1000_config_collision_dist(hw);
2208
2209 /* Check for a software override of the flow control settings, and setup
2210 * the device accordingly. If auto-negotiation is enabled, then software
2211 * will have to set the "PAUSE" bits to the correct value in the Tranmsit
2212 * Config Word Register (TXCW) and re-start auto-negotiation. However, if
8bde7f77 2213 * auto-negotiation is disabled, then software will have to manually
682011ff
WD		 2214 * configure the two flow control enable bits in the CTRL register.
2215 *
2216 * The possible values of the "fc" parameter are:
1aeed8d7
WD		 2217 * 0: Flow control is completely disabled
2218 * 1: Rx flow control is enabled (we can receive pause frames, but
2219 * not send pause frames).
2220 * 2: Tx flow control is enabled (we can send pause frames but we do
2221 * not support receiving pause frames).
2222 * 3: Both Rx and TX flow control (symmetric) are enabled.
682011ff
WD		 2223 */
2224 switch (hw->fc) {
2225 case e1000_fc_none:
2226 /* Flow control is completely disabled by a software over-ride. */
2227 txcw = (E1000_TXCW_ANE | E1000_TXCW_FD);
2228 break;
2229 case e1000_fc_rx_pause:
8bde7f77
WD		 2230 /* RX Flow control is enabled and TX Flow control is disabled by a
2231 * software over-ride. Since there really isn't a way to advertise
682011ff
WD		 2232 * that we are capable of RX Pause ONLY, we will advertise that we
2233 * support both symmetric and asymmetric RX PAUSE. Later, we will
2234 * disable the adapter's ability to send PAUSE frames.
2235 */
2236 txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_PAUSE_MASK);
2237 break;
2238 case e1000_fc_tx_pause:
8bde7f77 2239 /* TX Flow control is enabled, and RX Flow control is disabled, by a
682011ff
WD		 2240 * software over-ride.
2241 */
2242 txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_ASM_DIR);
2243 break;
2244 case e1000_fc_full:
2245 /* Flow control (both RX and TX) is enabled by a software over-ride. */
2246 txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_PAUSE_MASK);
2247 break;
2248 default:
2249 DEBUGOUT("Flow control param set incorrectly\n");
2250 return -E1000_ERR_CONFIG;
2251 break;
2252 }
2253
2254 /* Since auto-negotiation is enabled, take the link out of reset (the link
2255 * will be in reset, because we previously reset the chip). This will
2256 * restart auto-negotiation. If auto-neogtiation is successful then the
2257 * link-up status bit will be set and the flow control enable bits (RFCE
2258 * and TFCE) will be set according to their negotiated value.
2259 */
2260 DEBUGOUT("Auto-negotiation enabled (%#x)\n", txcw);
2261
2262 E1000_WRITE_REG(hw, TXCW, txcw);
2263 E1000_WRITE_REG(hw, CTRL, ctrl);
2264 E1000_WRITE_FLUSH(hw);
2265
2266 hw->txcw = txcw;
2267 mdelay(1);
2268
2269 /* If we have a signal (the cable is plugged in) then poll for a "Link-Up"
8bde7f77
WD		 2270 * indication in the Device Status Register. Time-out if a link isn't
2271 * seen in 500 milliseconds seconds (Auto-negotiation should complete in
682011ff
WD		 2272 * less than 500 milliseconds even if the other end is doing it in SW).
2273 */
2274 if ((E1000_READ_REG(hw, CTRL) & E1000_CTRL_SWDPIN1) == signal) {
2275 DEBUGOUT("Looking for Link\n");
2276 for (i = 0; i < (LINK_UP_TIMEOUT / 10); i++) {
2277 mdelay(10);
2278 status = E1000_READ_REG(hw, STATUS);
2279 if (status & E1000_STATUS_LU)
2280 break;
2281 }
2282 if (i == (LINK_UP_TIMEOUT / 10)) {
8bde7f77 2283 /* AutoNeg failed to achieve a link, so we'll call
682011ff
WD		 2284 * e1000_check_for_link. This routine will force the link up if we
2285 * detect a signal. This will allow us to communicate with
2286 * non-autonegotiating link partners.
2287 */
2288 DEBUGOUT("Never got a valid link from auto-neg!!!\n");
2289 hw->autoneg_failed = 1;
5c5e707a 2290 ret_val = e1000_check_for_link(hw);
682011ff
WD		 2291 if (ret_val < 0) {
2292 DEBUGOUT("Error while checking for link\n");
2293 return ret_val;
2294 }
2295 hw->autoneg_failed = 0;
2296 } else {
2297 hw->autoneg_failed = 0;
2298 DEBUGOUT("Valid Link Found\n");
2299 }
aa070789
RZ		 2300 } else {
2301 DEBUGOUT("No Signal Detected\n");
2302 return -E1000_ERR_NOLINK;
2303 }
2304 return 0;
2305}
2306
aa070789
RZ		 2307/******************************************************************************
2308* Make sure we have a valid PHY and change PHY mode before link setup.
2309*
2310* hw - Struct containing variables accessed by shared code
2311******************************************************************************/
2312static int32_t
2313e1000_copper_link_preconfig(struct e1000_hw *hw)
2314{
2315 uint32_t ctrl;
2316 int32_t ret_val;
2317 uint16_t phy_data;
2318
2319 DEBUGFUNC();
2320
2321 ctrl = E1000_READ_REG(hw, CTRL);
2322 /* With 82543, we need to force speed and duplex on the MAC equal to what
2323 * the PHY speed and duplex configuration is. In addition, we need to
2324 * perform a hardware reset on the PHY to take it out of reset.
2325 */
2326 if (hw->mac_type > e1000_82543) {
2327 ctrl |= E1000_CTRL_SLU;
2328 ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
2329 E1000_WRITE_REG(hw, CTRL, ctrl);
2330 } else {
2331 ctrl |= (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX
2332 | E1000_CTRL_SLU);
2333 E1000_WRITE_REG(hw, CTRL, ctrl);
2334 ret_val = e1000_phy_hw_reset(hw);
2335 if (ret_val)
2336 return ret_val;
2337 }
2338
2339 /* Make sure we have a valid PHY */
2340 ret_val = e1000_detect_gig_phy(hw);
2341 if (ret_val) {
2342 DEBUGOUT("Error, did not detect valid phy.\n");
2343 return ret_val;
2344 }
5abf13e4 2345 DEBUGOUT("Phy ID = %x\n", hw->phy_id);
aa070789 2346
aa070789
RZ		 2347 /* Set PHY to class A mode (if necessary) */
2348 ret_val = e1000_set_phy_mode(hw);
2349 if (ret_val)
2350 return ret_val;
aa070789
RZ		 2351 if ((hw->mac_type == e1000_82545_rev_3) ||
2352 (hw->mac_type == e1000_82546_rev_3)) {
2353 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL,
2354 &phy_data);
2355 phy_data |= 0x00000008;
2356 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL,
2357 phy_data);
2358 }
2359
2360 if (hw->mac_type <= e1000_82543 ||
2361 hw->mac_type == e1000_82541 || hw->mac_type == e1000_82547 ||
2362 hw->mac_type == e1000_82541_rev_2
2363 || hw->mac_type == e1000_82547_rev_2)
472d5460 2364 hw->phy_reset_disable = false;
aa070789
RZ		 2365
2366 return E1000_SUCCESS;
2367}
2368
2369/*****************************************************************************
2370 *
2371 * This function sets the lplu state according to the active flag. When
2372 * activating lplu this function also disables smart speed and vise versa.
2373 * lplu will not be activated unless the device autonegotiation advertisment
2374 * meets standards of either 10 or 10/100 or 10/100/1000 at all duplexes.
2375 * hw: Struct containing variables accessed by shared code
2376 * active - true to enable lplu false to disable lplu.
2377 *
2378 * returns: - E1000_ERR_PHY if fail to read/write the PHY
2379 * E1000_SUCCESS at any other case.
2380 *
2381 ****************************************************************************/
2382
2383static int32_t
472d5460 2384e1000_set_d3_lplu_state(struct e1000_hw *hw, bool active)
aa070789
RZ		 2385{
2386 uint32_t phy_ctrl = 0;
2387 int32_t ret_val;
2388 uint16_t phy_data;
2389 DEBUGFUNC();
2390
2391 if (hw->phy_type != e1000_phy_igp && hw->phy_type != e1000_phy_igp_2
2392 && hw->phy_type != e1000_phy_igp_3)
2393 return E1000_SUCCESS;
2394
2395 /* During driver activity LPLU should not be used or it will attain link
2396 * from the lowest speeds starting from 10Mbps. The capability is used
2397 * for Dx transitions and states */
2398 if (hw->mac_type == e1000_82541_rev_2
2399 || hw->mac_type == e1000_82547_rev_2) {
2400 ret_val = e1000_read_phy_reg(hw, IGP01E1000_GMII_FIFO,
2401 &phy_data);
2402 if (ret_val)
2403 return ret_val;
2404 } else if (hw->mac_type == e1000_ich8lan) {
2405 /* MAC writes into PHY register based on the state transition
2406 * and start auto-negotiation. SW driver can overwrite the
2407 * settings in CSR PHY power control E1000_PHY_CTRL register. */
2408 phy_ctrl = E1000_READ_REG(hw, PHY_CTRL);
2409 } else {
2410 ret_val = e1000_read_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT,
2411 &phy_data);
2412 if (ret_val)
2413 return ret_val;
2414 }
2415
2416 if (!active) {
2417 if (hw->mac_type == e1000_82541_rev_2 ||
2418 hw->mac_type == e1000_82547_rev_2) {
2419 phy_data &= ~IGP01E1000_GMII_FLEX_SPD;
2420 ret_val = e1000_write_phy_reg(hw, IGP01E1000_GMII_FIFO,
2421 phy_data);
2422 if (ret_val)
2423 return ret_val;
2424 } else {
2425 if (hw->mac_type == e1000_ich8lan) {
2426 phy_ctrl &= ~E1000_PHY_CTRL_NOND0A_LPLU;
2427 E1000_WRITE_REG(hw, PHY_CTRL, phy_ctrl);
2428 } else {
2429 phy_data &= ~IGP02E1000_PM_D3_LPLU;
2430 ret_val = e1000_write_phy_reg(hw,
2431 IGP02E1000_PHY_POWER_MGMT, phy_data);
2432 if (ret_val)
2433 return ret_val;
2434 }
2435 }
2436
2437 /* LPLU and SmartSpeed are mutually exclusive. LPLU is used during
2438 * Dx states where the power conservation is most important. During
2439 * driver activity we should enable SmartSpeed, so performance is
2440 * maintained. */
2441 if (hw->smart_speed == e1000_smart_speed_on) {
2442 ret_val = e1000_read_phy_reg(hw,
2443 IGP01E1000_PHY_PORT_CONFIG, &phy_data);
2444 if (ret_val)
2445 return ret_val;
2446
2447 phy_data |= IGP01E1000_PSCFR_SMART_SPEED;
2448 ret_val = e1000_write_phy_reg(hw,
2449 IGP01E1000_PHY_PORT_CONFIG, phy_data);
2450 if (ret_val)
2451 return ret_val;
2452 } else if (hw->smart_speed == e1000_smart_speed_off) {
2453 ret_val = e1000_read_phy_reg(hw,
2454 IGP01E1000_PHY_PORT_CONFIG, &phy_data);
2455 if (ret_val)
2456 return ret_val;
2457
2458 phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
2459 ret_val = e1000_write_phy_reg(hw,
2460 IGP01E1000_PHY_PORT_CONFIG, phy_data);
2461 if (ret_val)
2462 return ret_val;
2463 }
2464
2465 } else if ((hw->autoneg_advertised == AUTONEG_ADVERTISE_SPEED_DEFAULT)
2466 || (hw->autoneg_advertised == AUTONEG_ADVERTISE_10_ALL) ||
2467 (hw->autoneg_advertised == AUTONEG_ADVERTISE_10_100_ALL)) {
2468
2469 if (hw->mac_type == e1000_82541_rev_2 ||
2470 hw->mac_type == e1000_82547_rev_2) {
2471 phy_data |= IGP01E1000_GMII_FLEX_SPD;
2472 ret_val = e1000_write_phy_reg(hw,
2473 IGP01E1000_GMII_FIFO, phy_data);
2474 if (ret_val)
2475 return ret_val;
2476 } else {
2477 if (hw->mac_type == e1000_ich8lan) {
2478 phy_ctrl |= E1000_PHY_CTRL_NOND0A_LPLU;
2479 E1000_WRITE_REG(hw, PHY_CTRL, phy_ctrl);
2480 } else {
2481 phy_data |= IGP02E1000_PM_D3_LPLU;
2482 ret_val = e1000_write_phy_reg(hw,
2483 IGP02E1000_PHY_POWER_MGMT, phy_data);
2484 if (ret_val)
2485 return ret_val;
2486 }
2487 }
2488
2489 /* When LPLU is enabled we should disable SmartSpeed */
2490 ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
2491 &phy_data);
2492 if (ret_val)
2493 return ret_val;
2494
2495 phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
2496 ret_val = e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
2497 phy_data);
2498 if (ret_val)
2499 return ret_val;
2500 }
2501 return E1000_SUCCESS;
2502}
2503
2504/*****************************************************************************
2505 *
2506 * This function sets the lplu d0 state according to the active flag. When
2507 * activating lplu this function also disables smart speed and vise versa.
2508 * lplu will not be activated unless the device autonegotiation advertisment
2509 * meets standards of either 10 or 10/100 or 10/100/1000 at all duplexes.
2510 * hw: Struct containing variables accessed by shared code
2511 * active - true to enable lplu false to disable lplu.
2512 *
2513 * returns: - E1000_ERR_PHY if fail to read/write the PHY
2514 * E1000_SUCCESS at any other case.
2515 *
2516 ****************************************************************************/
2517
2518static int32_t
472d5460 2519e1000_set_d0_lplu_state(struct e1000_hw *hw, bool active)
aa070789
RZ		 2520{
2521 uint32_t phy_ctrl = 0;
2522 int32_t ret_val;
2523 uint16_t phy_data;
2524 DEBUGFUNC();
2525
2526 if (hw->mac_type <= e1000_82547_rev_2)
2527 return E1000_SUCCESS;
2528
2529 if (hw->mac_type == e1000_ich8lan) {
2530 phy_ctrl = E1000_READ_REG(hw, PHY_CTRL);
95186063
MV		 2531 } else if (hw->mac_type == e1000_igb) {
2532 phy_ctrl = E1000_READ_REG(hw, I210_PHY_CTRL);
aa070789
RZ		 2533 } else {
2534 ret_val = e1000_read_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT,
2535 &phy_data);
2536 if (ret_val)
2537 return ret_val;
2538 }
2539
2540 if (!active) {
2541 if (hw->mac_type == e1000_ich8lan) {
2542 phy_ctrl &= ~E1000_PHY_CTRL_D0A_LPLU;
2543 E1000_WRITE_REG(hw, PHY_CTRL, phy_ctrl);
95186063
MV		 2544 } else if (hw->mac_type == e1000_igb) {
2545 phy_ctrl &= ~E1000_PHY_CTRL_D0A_LPLU;
2546 E1000_WRITE_REG(hw, I210_PHY_CTRL, phy_ctrl);
aa070789
RZ		 2547 } else {
2548 phy_data &= ~IGP02E1000_PM_D0_LPLU;
2549 ret_val = e1000_write_phy_reg(hw,
2550 IGP02E1000_PHY_POWER_MGMT, phy_data);
2551 if (ret_val)
2552 return ret_val;
2553 }
2554
95186063
MV		 2555 if (hw->mac_type == e1000_igb)
2556 return E1000_SUCCESS;
2557
aa070789
RZ		 2558 /* LPLU and SmartSpeed are mutually exclusive. LPLU is used during
2559 * Dx states where the power conservation is most important. During
2560 * driver activity we should enable SmartSpeed, so performance is
2561 * maintained. */
2562 if (hw->smart_speed == e1000_smart_speed_on) {
2563 ret_val = e1000_read_phy_reg(hw,
2564 IGP01E1000_PHY_PORT_CONFIG, &phy_data);
2565 if (ret_val)
2566 return ret_val;
2567
2568 phy_data |= IGP01E1000_PSCFR_SMART_SPEED;
2569 ret_val = e1000_write_phy_reg(hw,
2570 IGP01E1000_PHY_PORT_CONFIG, phy_data);
2571 if (ret_val)
2572 return ret_val;
2573 } else if (hw->smart_speed == e1000_smart_speed_off) {
2574 ret_val = e1000_read_phy_reg(hw,
2575 IGP01E1000_PHY_PORT_CONFIG, &phy_data);
2576 if (ret_val)
2577 return ret_val;
2578
2579 phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
2580 ret_val = e1000_write_phy_reg(hw,
2581 IGP01E1000_PHY_PORT_CONFIG, phy_data);
2582 if (ret_val)
2583 return ret_val;
2584 }
2585
2586
2587 } else {
2588
2589 if (hw->mac_type == e1000_ich8lan) {
2590 phy_ctrl |= E1000_PHY_CTRL_D0A_LPLU;
2591 E1000_WRITE_REG(hw, PHY_CTRL, phy_ctrl);
95186063
MV		 2592 } else if (hw->mac_type == e1000_igb) {
2593 phy_ctrl |= E1000_PHY_CTRL_D0A_LPLU;
2594 E1000_WRITE_REG(hw, I210_PHY_CTRL, phy_ctrl);
aa070789
RZ		 2595 } else {
2596 phy_data |= IGP02E1000_PM_D0_LPLU;
2597 ret_val = e1000_write_phy_reg(hw,
2598 IGP02E1000_PHY_POWER_MGMT, phy_data);
2599 if (ret_val)
2600 return ret_val;
2601 }
2602
95186063
MV		 2603 if (hw->mac_type == e1000_igb)
2604 return E1000_SUCCESS;
2605
aa070789
RZ		 2606 /* When LPLU is enabled we should disable SmartSpeed */
2607 ret_val = e1000_read_phy_reg(hw,
2608 IGP01E1000_PHY_PORT_CONFIG, &phy_data);
2609 if (ret_val)
2610 return ret_val;
2611
2612 phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
2613 ret_val = e1000_write_phy_reg(hw,
2614 IGP01E1000_PHY_PORT_CONFIG, phy_data);
2615 if (ret_val)
2616 return ret_val;
2617
2618 }
2619 return E1000_SUCCESS;
2620}
2621
2622/********************************************************************
2623* Copper link setup for e1000_phy_igp series.
2624*
2625* hw - Struct containing variables accessed by shared code
2626*********************************************************************/
2627static int32_t
2628e1000_copper_link_igp_setup(struct e1000_hw *hw)
2629{
2630 uint32_t led_ctrl;
2631 int32_t ret_val;
2632 uint16_t phy_data;
2633
f81ecb5d 2634 DEBUGFUNC();
aa070789
RZ		 2635
2636 if (hw->phy_reset_disable)
2637 return E1000_SUCCESS;
2638
2639 ret_val = e1000_phy_reset(hw);
2640 if (ret_val) {
2641 DEBUGOUT("Error Resetting the PHY\n");
2642 return ret_val;
2643 }
2644
2645 /* Wait 15ms for MAC to configure PHY from eeprom settings */
2646 mdelay(15);
2647 if (hw->mac_type != e1000_ich8lan) {
2648 /* Configure activity LED after PHY reset */
2649 led_ctrl = E1000_READ_REG(hw, LEDCTL);
2650 led_ctrl &= IGP_ACTIVITY_LED_MASK;
2651 led_ctrl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE);
2652 E1000_WRITE_REG(hw, LEDCTL, led_ctrl);
2653 }
2654
2655 /* The NVM settings will configure LPLU in D3 for IGP2 and IGP3 PHYs */
2656 if (hw->phy_type == e1000_phy_igp) {
2657 /* disable lplu d3 during driver init */
472d5460 2658 ret_val = e1000_set_d3_lplu_state(hw, false);
aa070789
RZ		 2659 if (ret_val) {
2660 DEBUGOUT("Error Disabling LPLU D3\n");
2661 return ret_val;
2662 }
2663 }
2664
2665 /* disable lplu d0 during driver init */
472d5460 2666 ret_val = e1000_set_d0_lplu_state(hw, false);
aa070789
RZ		 2667 if (ret_val) {
2668 DEBUGOUT("Error Disabling LPLU D0\n");
2669 return ret_val;
2670 }
2671 /* Configure mdi-mdix settings */
2672 ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, &phy_data);
2673 if (ret_val)
2674 return ret_val;
2675
2676 if ((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_82547)) {
2677 hw->dsp_config_state = e1000_dsp_config_disabled;
2678 /* Force MDI for earlier revs of the IGP PHY */
2679 phy_data &= ~(IGP01E1000_PSCR_AUTO_MDIX
2680 | IGP01E1000_PSCR_FORCE_MDI_MDIX);
2681 hw->mdix = 1;
2682
2683 } else {
2684 hw->dsp_config_state = e1000_dsp_config_enabled;
2685 phy_data &= ~IGP01E1000_PSCR_AUTO_MDIX;
2686
2687 switch (hw->mdix) {
2688 case 1:
2689 phy_data &= ~IGP01E1000_PSCR_FORCE_MDI_MDIX;
2690 break;
2691 case 2:
2692 phy_data |= IGP01E1000_PSCR_FORCE_MDI_MDIX;
2693 break;
2694 case 0:
2695 default:
2696 phy_data |= IGP01E1000_PSCR_AUTO_MDIX;
2697 break;
2698 }
2699 }
2700 ret_val = e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, phy_data);
2701 if (ret_val)
2702 return ret_val;
2703
2704 /* set auto-master slave resolution settings */
2705 if (hw->autoneg) {
2706 e1000_ms_type phy_ms_setting = hw->master_slave;
2707
2708 if (hw->ffe_config_state == e1000_ffe_config_active)
2709 hw->ffe_config_state = e1000_ffe_config_enabled;
2710
2711 if (hw->dsp_config_state == e1000_dsp_config_activated)
2712 hw->dsp_config_state = e1000_dsp_config_enabled;
2713
2714 /* when autonegotiation advertisment is only 1000Mbps then we
2715 * should disable SmartSpeed and enable Auto MasterSlave
2716 * resolution as hardware default. */
2717 if (hw->autoneg_advertised == ADVERTISE_1000_FULL) {
2718 /* Disable SmartSpeed */
2719 ret_val = e1000_read_phy_reg(hw,
2720 IGP01E1000_PHY_PORT_CONFIG, &phy_data);
2721 if (ret_val)
2722 return ret_val;
2723 phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
2724 ret_val = e1000_write_phy_reg(hw,
2725 IGP01E1000_PHY_PORT_CONFIG, phy_data);
2726 if (ret_val)
2727 return ret_val;
2728 /* Set auto Master/Slave resolution process */
2729 ret_val = e1000_read_phy_reg(hw, PHY_1000T_CTRL,
2730 &phy_data);
2731 if (ret_val)
2732 return ret_val;
2733 phy_data &= ~CR_1000T_MS_ENABLE;
2734 ret_val = e1000_write_phy_reg(hw, PHY_1000T_CTRL,
2735 phy_data);
2736 if (ret_val)
2737 return ret_val;
2738 }
2739
2740 ret_val = e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_data);
2741 if (ret_val)
2742 return ret_val;
2743
2744 /* load defaults for future use */
2745 hw->original_master_slave = (phy_data & CR_1000T_MS_ENABLE) ?
2746 ((phy_data & CR_1000T_MS_VALUE) ?
2747 e1000_ms_force_master :
2748 e1000_ms_force_slave) :
2749 e1000_ms_auto;
2750
2751 switch (phy_ms_setting) {
2752 case e1000_ms_force_master:
2753 phy_data |= (CR_1000T_MS_ENABLE | CR_1000T_MS_VALUE);
2754 break;
2755 case e1000_ms_force_slave:
2756 phy_data |= CR_1000T_MS_ENABLE;
2757 phy_data &= ~(CR_1000T_MS_VALUE);
2758 break;
2759 case e1000_ms_auto:
2760 phy_data &= ~CR_1000T_MS_ENABLE;
2761 default:
2762 break;
2763 }
2764 ret_val = e1000_write_phy_reg(hw, PHY_1000T_CTRL, phy_data);
2765 if (ret_val)
2766 return ret_val;
2767 }
2768
2769 return E1000_SUCCESS;
2770}
2771
2772/*****************************************************************************
2773 * This function checks the mode of the firmware.
2774 *
472d5460 2775 * returns - true when the mode is IAMT or false.
aa070789 2776 ****************************************************************************/
472d5460 2777bool
aa070789
RZ		 2778e1000_check_mng_mode(struct e1000_hw *hw)
2779{
2780 uint32_t fwsm;
2781 DEBUGFUNC();
2782
2783 fwsm = E1000_READ_REG(hw, FWSM);
2784
2785 if (hw->mac_type == e1000_ich8lan) {
2786 if ((fwsm & E1000_FWSM_MODE_MASK) ==
2787 (E1000_MNG_ICH_IAMT_MODE << E1000_FWSM_MODE_SHIFT))
472d5460 2788 return true;
aa070789
RZ		 2789 } else if ((fwsm & E1000_FWSM_MODE_MASK) ==
2790 (E1000_MNG_IAMT_MODE << E1000_FWSM_MODE_SHIFT))
472d5460 2791 return true;
aa070789 2792
472d5460 2793 return false;
aa070789
RZ		 2794}
2795
2796static int32_t
2797e1000_write_kmrn_reg(struct e1000_hw *hw, uint32_t reg_addr, uint16_t data)
2798{
987b43a1 2799 uint16_t swfw = E1000_SWFW_PHY0_SM;
aa070789 2800 uint32_t reg_val;
aa070789
RZ		 2801 DEBUGFUNC();
2802
987b43a1 2803 if (e1000_is_second_port(hw))
aa070789 2804 swfw = E1000_SWFW_PHY1_SM;
987b43a1 2805
aa070789
RZ		 2806 if (e1000_swfw_sync_acquire(hw, swfw))
2807 return -E1000_ERR_SWFW_SYNC;
2808
2809 reg_val = ((reg_addr << E1000_KUMCTRLSTA_OFFSET_SHIFT)
2810 & E1000_KUMCTRLSTA_OFFSET) | data;
2811 E1000_WRITE_REG(hw, KUMCTRLSTA, reg_val);
2812 udelay(2);
2813
2814 return E1000_SUCCESS;
2815}
2816
2817static int32_t
2818e1000_read_kmrn_reg(struct e1000_hw *hw, uint32_t reg_addr, uint16_t *data)
2819{
987b43a1 2820 uint16_t swfw = E1000_SWFW_PHY0_SM;
aa070789 2821 uint32_t reg_val;
aa070789
RZ		 2822 DEBUGFUNC();
2823
987b43a1 2824 if (e1000_is_second_port(hw))
aa070789 2825 swfw = E1000_SWFW_PHY1_SM;
987b43a1 2826
95186063
MV		 2827 if (e1000_swfw_sync_acquire(hw, swfw)) {
2828 debug("%s[%i]\n", __func__, __LINE__);
aa070789 2829 return -E1000_ERR_SWFW_SYNC;
95186063 2830 }
aa070789
RZ		 2831
2832 /* Write register address */
2833 reg_val = ((reg_addr << E1000_KUMCTRLSTA_OFFSET_SHIFT) &
2834 E1000_KUMCTRLSTA_OFFSET) | E1000_KUMCTRLSTA_REN;
2835 E1000_WRITE_REG(hw, KUMCTRLSTA, reg_val);
2836 udelay(2);
2837
2838 /* Read the data returned */
2839 reg_val = E1000_READ_REG(hw, KUMCTRLSTA);
2840 *data = (uint16_t)reg_val;
2841
2842 return E1000_SUCCESS;
2843}
2844
2845/********************************************************************
2846* Copper link setup for e1000_phy_gg82563 series.
2847*
2848* hw - Struct containing variables accessed by shared code
2849*********************************************************************/
2850static int32_t
2851e1000_copper_link_ggp_setup(struct e1000_hw *hw)
2852{
2853 int32_t ret_val;
2854 uint16_t phy_data;
2855 uint32_t reg_data;
2856
2857 DEBUGFUNC();
2858
2859 if (!hw->phy_reset_disable) {
2860 /* Enable CRS on TX for half-duplex operation. */
2861 ret_val = e1000_read_phy_reg(hw,
2862 GG82563_PHY_MAC_SPEC_CTRL, &phy_data);
2863 if (ret_val)
2864 return ret_val;
2865
2866 phy_data |= GG82563_MSCR_ASSERT_CRS_ON_TX;
2867 /* Use 25MHz for both link down and 1000BASE-T for Tx clock */
2868 phy_data |= GG82563_MSCR_TX_CLK_1000MBPS_25MHZ;
2869
2870 ret_val = e1000_write_phy_reg(hw,
2871 GG82563_PHY_MAC_SPEC_CTRL, phy_data);
2872 if (ret_val)
2873 return ret_val;
2874
2875 /* Options:
2876 * MDI/MDI-X = 0 (default)
2877 * 0 - Auto for all speeds
2878 * 1 - MDI mode
2879 * 2 - MDI-X mode
2880 * 3 - Auto for 1000Base-T only (MDI-X for 10/100Base-T modes)
2881 */
2882 ret_val = e1000_read_phy_reg(hw,
2883 GG82563_PHY_SPEC_CTRL, &phy_data);
2884 if (ret_val)
2885 return ret_val;
2886
2887 phy_data &= ~GG82563_PSCR_CROSSOVER_MODE_MASK;
2888
2889 switch (hw->mdix) {
2890 case 1:
2891 phy_data |= GG82563_PSCR_CROSSOVER_MODE_MDI;
2892 break;
2893 case 2:
2894 phy_data |= GG82563_PSCR_CROSSOVER_MODE_MDIX;
2895 break;
2896 case 0:
2897 default:
2898 phy_data |= GG82563_PSCR_CROSSOVER_MODE_AUTO;
2899 break;
2900 }
2901
2902 /* Options:
2903 * disable_polarity_correction = 0 (default)
2904 * Automatic Correction for Reversed Cable Polarity
2905 * 0 - Disabled
2906 * 1 - Enabled
2907 */
2908 phy_data &= ~GG82563_PSCR_POLARITY_REVERSAL_DISABLE;
2909 ret_val = e1000_write_phy_reg(hw,
2910 GG82563_PHY_SPEC_CTRL, phy_data);
2911
2912 if (ret_val)
2913 return ret_val;
2914
2915 /* SW Reset the PHY so all changes take effect */
2916 ret_val = e1000_phy_reset(hw);
2917 if (ret_val) {
2918 DEBUGOUT("Error Resetting the PHY\n");
2919 return ret_val;
2920 }
2921 } /* phy_reset_disable */
2922
2923 if (hw->mac_type == e1000_80003es2lan) {
2924 /* Bypass RX and TX FIFO's */
2925 ret_val = e1000_write_kmrn_reg(hw,
2926 E1000_KUMCTRLSTA_OFFSET_FIFO_CTRL,
2927 E1000_KUMCTRLSTA_FIFO_CTRL_RX_BYPASS
2928 | E1000_KUMCTRLSTA_FIFO_CTRL_TX_BYPASS);
2929 if (ret_val)
2930 return ret_val;
2931
2932 ret_val = e1000_read_phy_reg(hw,
2933 GG82563_PHY_SPEC_CTRL_2, &phy_data);
2934 if (ret_val)
2935 return ret_val;
2936
2937 phy_data &= ~GG82563_PSCR2_REVERSE_AUTO_NEG;
2938 ret_val = e1000_write_phy_reg(hw,
2939 GG82563_PHY_SPEC_CTRL_2, phy_data);
2940
2941 if (ret_val)
2942 return ret_val;
2943
2944 reg_data = E1000_READ_REG(hw, CTRL_EXT);
2945 reg_data &= ~(E1000_CTRL_EXT_LINK_MODE_MASK);
2946 E1000_WRITE_REG(hw, CTRL_EXT, reg_data);
2947
2948 ret_val = e1000_read_phy_reg(hw,
2949 GG82563_PHY_PWR_MGMT_CTRL, &phy_data);
2950 if (ret_val)
2951 return ret_val;
2952
2953 /* Do not init these registers when the HW is in IAMT mode, since the
2954 * firmware will have already initialized them. We only initialize
2955 * them if the HW is not in IAMT mode.
2956 */
472d5460 2957 if (e1000_check_mng_mode(hw) == false) {
aa070789
RZ		 2958 /* Enable Electrical Idle on the PHY */
2959 phy_data |= GG82563_PMCR_ENABLE_ELECTRICAL_IDLE;
2960 ret_val = e1000_write_phy_reg(hw,
2961 GG82563_PHY_PWR_MGMT_CTRL, phy_data);
2962 if (ret_val)
2963 return ret_val;
2964
2965 ret_val = e1000_read_phy_reg(hw,
2966 GG82563_PHY_KMRN_MODE_CTRL, &phy_data);
2967 if (ret_val)
2968 return ret_val;
2969
2970 phy_data &= ~GG82563_KMCR_PASS_FALSE_CARRIER;
2971 ret_val = e1000_write_phy_reg(hw,
2972 GG82563_PHY_KMRN_MODE_CTRL, phy_data);
2973
2974 if (ret_val)
2975 return ret_val;
2976 }
2977
2978 /* Workaround: Disable padding in Kumeran interface in the MAC
2979 * and in the PHY to avoid CRC errors.
2980 */
2981 ret_val = e1000_read_phy_reg(hw,
2982 GG82563_PHY_INBAND_CTRL, &phy_data);
2983 if (ret_val)
2984 return ret_val;
2985 phy_data |= GG82563_ICR_DIS_PADDING;
2986 ret_val = e1000_write_phy_reg(hw,
2987 GG82563_PHY_INBAND_CTRL, phy_data);
2988 if (ret_val)
2989 return ret_val;
682011ff 2990 }
aa070789 2991 return E1000_SUCCESS;
682011ff
WD		 2992}
2993
aa070789
RZ		 2994/********************************************************************
2995* Copper link setup for e1000_phy_m88 series.
682011ff
WD		 2996*
2997* hw - Struct containing variables accessed by shared code
aa070789
RZ		 2998*********************************************************************/
2999static int32_t
3000e1000_copper_link_mgp_setup(struct e1000_hw *hw)
682011ff 3001{
682011ff 3002 int32_t ret_val;
682011ff
WD		 3003 uint16_t phy_data;
3004
3005 DEBUGFUNC();
3006
aa070789
RZ		 3007 if (hw->phy_reset_disable)
3008 return E1000_SUCCESS;
682011ff 3009
aa070789
RZ		 3010 /* Enable CRS on TX. This must be set for half-duplex operation. */
3011 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
3012 if (ret_val)
682011ff 3013 return ret_val;
682011ff 3014
682011ff
WD		 3015 phy_data |= M88E1000_PSCR_ASSERT_CRS_ON_TX;
3016
682011ff
WD		 3017 /* Options:
3018 * MDI/MDI-X = 0 (default)
3019 * 0 - Auto for all speeds
3020 * 1 - MDI mode
3021 * 2 - MDI-X mode
3022 * 3 - Auto for 1000Base-T only (MDI-X for 10/100Base-T modes)
3023 */
3024 phy_data &= ~M88E1000_PSCR_AUTO_X_MODE;
aa070789 3025
682011ff
WD		 3026 switch (hw->mdix) {
3027 case 1:
3028 phy_data |= M88E1000_PSCR_MDI_MANUAL_MODE;
3029 break;
3030 case 2:
3031 phy_data |= M88E1000_PSCR_MDIX_MANUAL_MODE;
3032 break;
3033 case 3:
3034 phy_data |= M88E1000_PSCR_AUTO_X_1000T;
3035 break;
3036 case 0:
3037 default:
3038 phy_data |= M88E1000_PSCR_AUTO_X_MODE;
3039 break;
3040 }
682011ff 3041
682011ff
WD		 3042 /* Options:
3043 * disable_polarity_correction = 0 (default)
aa070789 3044 * Automatic Correction for Reversed Cable Polarity
682011ff
WD		 3045 * 0 - Disabled
3046 * 1 - Enabled
3047 */
3048 phy_data &= ~M88E1000_PSCR_POLARITY_REVERSAL;
aa070789
RZ		 3049 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data);
3050 if (ret_val)
3051 return ret_val;
682011ff 3052
aa070789
RZ		 3053 if (hw->phy_revision < M88E1011_I_REV_4) {
3054 /* Force TX_CLK in the Extended PHY Specific Control Register
3055 * to 25MHz clock.
3056 */
3057 ret_val = e1000_read_phy_reg(hw,
3058 M88E1000_EXT_PHY_SPEC_CTRL, &phy_data);
3059 if (ret_val)
3060 return ret_val;
3061
3062 phy_data |= M88E1000_EPSCR_TX_CLK_25;
3063
3064 if ((hw->phy_revision == E1000_REVISION_2) &&
3065 (hw->phy_id == M88E1111_I_PHY_ID)) {
3066 /* Vidalia Phy, set the downshift counter to 5x */
3067 phy_data &= ~(M88EC018_EPSCR_DOWNSHIFT_COUNTER_MASK);
3068 phy_data |= M88EC018_EPSCR_DOWNSHIFT_COUNTER_5X;
3069 ret_val = e1000_write_phy_reg(hw,
3070 M88E1000_EXT_PHY_SPEC_CTRL, phy_data);
3071 if (ret_val)
3072 return ret_val;
3073 } else {
3074 /* Configure Master and Slave downshift values */
3075 phy_data &= ~(M88E1000_EPSCR_MASTER_DOWNSHIFT_MASK
3076 | M88E1000_EPSCR_SLAVE_DOWNSHIFT_MASK);
3077 phy_data |= (M88E1000_EPSCR_MASTER_DOWNSHIFT_1X
3078 | M88E1000_EPSCR_SLAVE_DOWNSHIFT_1X);
3079 ret_val = e1000_write_phy_reg(hw,
3080 M88E1000_EXT_PHY_SPEC_CTRL, phy_data);
3081 if (ret_val)
3082 return ret_val;
3083 }
682011ff
WD		 3084 }
3085
3086 /* SW Reset the PHY so all changes take effect */
3087 ret_val = e1000_phy_reset(hw);
aa070789 3088 if (ret_val) {
682011ff
WD		 3089 DEBUGOUT("Error Resetting the PHY\n");
3090 return ret_val;
3091 }
3092
aa070789
RZ		 3093 return E1000_SUCCESS;
3094}
3095
3096/********************************************************************
3097* Setup auto-negotiation and flow control advertisements,
3098* and then perform auto-negotiation.
3099*
3100* hw - Struct containing variables accessed by shared code
3101*********************************************************************/
3102static int32_t
3103e1000_copper_link_autoneg(struct e1000_hw *hw)
3104{
3105 int32_t ret_val;
3106 uint16_t phy_data;
3107
3108 DEBUGFUNC();
682011ff 3109
682011ff
WD		 3110 /* Perform some bounds checking on the hw->autoneg_advertised
3111 * parameter. If this variable is zero, then set it to the default.
3112 */
3113 hw->autoneg_advertised &= AUTONEG_ADVERTISE_SPEED_DEFAULT;
3114
3115 /* If autoneg_advertised is zero, we assume it was not defaulted
3116 * by the calling code so we set to advertise full capability.
3117 */
3118 if (hw->autoneg_advertised == 0)
3119 hw->autoneg_advertised = AUTONEG_ADVERTISE_SPEED_DEFAULT;
3120
aa070789
RZ		 3121 /* IFE phy only supports 10/100 */
3122 if (hw->phy_type == e1000_phy_ife)
3123 hw->autoneg_advertised &= AUTONEG_ADVERTISE_10_100_ALL;
3124
682011ff
WD		 3125 DEBUGOUT("Reconfiguring auto-neg advertisement params\n");
3126 ret_val = e1000_phy_setup_autoneg(hw);
aa070789 3127 if (ret_val) {
682011ff
WD		 3128 DEBUGOUT("Error Setting up Auto-Negotiation\n");
3129 return ret_val;
3130 }
3131 DEBUGOUT("Restarting Auto-Neg\n");
3132
3133 /* Restart auto-negotiation by setting the Auto Neg Enable bit and
3134 * the Auto Neg Restart bit in the PHY control register.
3135 */
aa070789
RZ		 3136 ret_val = e1000_read_phy_reg(hw, PHY_CTRL, &phy_data);
3137 if (ret_val)
3138 return ret_val;
3139
682011ff 3140 phy_data |= (MII_CR_AUTO_NEG_EN | MII_CR_RESTART_AUTO_NEG);
aa070789
RZ		 3141 ret_val = e1000_write_phy_reg(hw, PHY_CTRL, phy_data);
3142 if (ret_val)
3143 return ret_val;
3144
682011ff
WD		 3145 /* Does the user want to wait for Auto-Neg to complete here, or
3146 * check at a later time (for example, callback routine).
3147 */
aa070789
RZ		 3148 /* If we do not wait for autonegtation to complete I
3149 * do not see a valid link status.
3150 * wait_autoneg_complete = 1 .
3151 */
682011ff
WD		 3152 if (hw->wait_autoneg_complete) {
3153 ret_val = e1000_wait_autoneg(hw);
aa070789
RZ		 3154 if (ret_val) {
3155 DEBUGOUT("Error while waiting for autoneg"
3156 "to complete\n");
682011ff
WD		 3157 return ret_val;
3158 }
3159 }
aa070789 3160
472d5460 3161 hw->get_link_status = true;
aa070789
RZ		 3162
3163 return E1000_SUCCESS;
3164}
3165
3166/******************************************************************************
3167* Config the MAC and the PHY after link is up.
3168* 1) Set up the MAC to the current PHY speed/duplex
3169* if we are on 82543. If we
3170* are on newer silicon, we only need to configure
3171* collision distance in the Transmit Control Register.
3172* 2) Set up flow control on the MAC to that established with
3173* the link partner.
3174* 3) Config DSP to improve Gigabit link quality for some PHY revisions.
3175*
3176* hw - Struct containing variables accessed by shared code
3177******************************************************************************/
3178static int32_t
3179e1000_copper_link_postconfig(struct e1000_hw *hw)
3180{
3181 int32_t ret_val;
3182 DEBUGFUNC();
3183
3184 if (hw->mac_type >= e1000_82544) {
3185 e1000_config_collision_dist(hw);
3186 } else {
3187 ret_val = e1000_config_mac_to_phy(hw);
3188 if (ret_val) {
3189 DEBUGOUT("Error configuring MAC to PHY settings\n");
3190 return ret_val;
3191 }
3192 }
3193 ret_val = e1000_config_fc_after_link_up(hw);
3194 if (ret_val) {
3195 DEBUGOUT("Error Configuring Flow Control\n");
682011ff
WD		 3196 return ret_val;
3197 }
aa070789
RZ		 3198 return E1000_SUCCESS;
3199}
3200
3201/******************************************************************************
3202* Detects which PHY is present and setup the speed and duplex
3203*
3204* hw - Struct containing variables accessed by shared code
3205******************************************************************************/
3206static int
5c5e707a 3207e1000_setup_copper_link(struct e1000_hw *hw)
aa070789 3208{
aa070789
RZ		 3209 int32_t ret_val;
3210 uint16_t i;
3211 uint16_t phy_data;
3212 uint16_t reg_data;
3213
3214 DEBUGFUNC();
3215
3216 switch (hw->mac_type) {
3217 case e1000_80003es2lan:
3218 case e1000_ich8lan:
3219 /* Set the mac to wait the maximum time between each
3220 * iteration and increase the max iterations when
3221 * polling the phy; this fixes erroneous timeouts at 10Mbps. */
3222 ret_val = e1000_write_kmrn_reg(hw,
3223 GG82563_REG(0x34, 4), 0xFFFF);
3224 if (ret_val)
3225 return ret_val;
3226 ret_val = e1000_read_kmrn_reg(hw,
3227 GG82563_REG(0x34, 9), &reg_data);
3228 if (ret_val)
3229 return ret_val;
3230 reg_data |= 0x3F;
3231 ret_val = e1000_write_kmrn_reg(hw,
3232 GG82563_REG(0x34, 9), reg_data);
3233 if (ret_val)
3234 return ret_val;
3235 default:
3236 break;
3237 }
3238
3239 /* Check if it is a valid PHY and set PHY mode if necessary. */
3240 ret_val = e1000_copper_link_preconfig(hw);
3241 if (ret_val)
3242 return ret_val;
3243 switch (hw->mac_type) {
3244 case e1000_80003es2lan:
3245 /* Kumeran registers are written-only */
3246 reg_data =
3247 E1000_KUMCTRLSTA_INB_CTRL_LINK_STATUS_TX_TIMEOUT_DEFAULT;
3248 reg_data |= E1000_KUMCTRLSTA_INB_CTRL_DIS_PADDING;
3249 ret_val = e1000_write_kmrn_reg(hw,
3250 E1000_KUMCTRLSTA_OFFSET_INB_CTRL, reg_data);
3251 if (ret_val)
3252 return ret_val;
3253 break;
3254 default:
3255 break;
3256 }
3257
3258 if (hw->phy_type == e1000_phy_igp ||
3259 hw->phy_type == e1000_phy_igp_3 ||
3260 hw->phy_type == e1000_phy_igp_2) {
3261 ret_val = e1000_copper_link_igp_setup(hw);
3262 if (ret_val)
3263 return ret_val;
95186063 3264 } else if (hw->phy_type == e1000_phy_m88 ||
85d44e42
MA		 3265 hw->phy_type == e1000_phy_igb ||
3266 hw->phy_type == e1000_phy_igc) {
aa070789
RZ		 3267 ret_val = e1000_copper_link_mgp_setup(hw);
3268 if (ret_val)
3269 return ret_val;
3270 } else if (hw->phy_type == e1000_phy_gg82563) {
3271 ret_val = e1000_copper_link_ggp_setup(hw);
3272 if (ret_val)
3273 return ret_val;
3274 }
3275
3276 /* always auto */
3277 /* Setup autoneg and flow control advertisement
3278 * and perform autonegotiation */
3279 ret_val = e1000_copper_link_autoneg(hw);
3280 if (ret_val)
3281 return ret_val;
682011ff
WD		 3282
3283 /* Check link status. Wait up to 100 microseconds for link to become
3284 * valid.
3285 */
3286 for (i = 0; i < 10; i++) {
aa070789
RZ		 3287 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
3288 if (ret_val)
3289 return ret_val;
3290 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
3291 if (ret_val)
3292 return ret_val;
3293
682011ff 3294 if (phy_data & MII_SR_LINK_STATUS) {
aa070789
RZ		 3295 /* Config the MAC and PHY after link is up */
3296 ret_val = e1000_copper_link_postconfig(hw);
3297 if (ret_val)
682011ff 3298 return ret_val;
aa070789 3299
682011ff 3300 DEBUGOUT("Valid link established!!!\n");
aa070789 3301 return E1000_SUCCESS;
682011ff
WD		 3302 }
3303 udelay(10);
3304 }
3305
3306 DEBUGOUT("Unable to establish link!!!\n");
aa070789 3307 return E1000_SUCCESS;
682011ff
WD		 3308}
3309
3310/******************************************************************************
3311* Configures PHY autoneg and flow control advertisement settings
3312*
3313* hw - Struct containing variables accessed by shared code
3314******************************************************************************/
aa070789 3315int32_t
682011ff
WD		 3316e1000_phy_setup_autoneg(struct e1000_hw *hw)
3317{
aa070789 3318 int32_t ret_val;
682011ff
WD		 3319 uint16_t mii_autoneg_adv_reg;
3320 uint16_t mii_1000t_ctrl_reg;
3321
3322 DEBUGFUNC();
3323
3324 /* Read the MII Auto-Neg Advertisement Register (Address 4). */
aa070789
RZ		 3325 ret_val = e1000_read_phy_reg(hw, PHY_AUTONEG_ADV, &mii_autoneg_adv_reg);
3326 if (ret_val)
3327 return ret_val;
682011ff 3328
aa070789
RZ		 3329 if (hw->phy_type != e1000_phy_ife) {
3330 /* Read the MII 1000Base-T Control Register (Address 9). */
3331 ret_val = e1000_read_phy_reg(hw, PHY_1000T_CTRL,
3332 &mii_1000t_ctrl_reg);
3333 if (ret_val)
3334 return ret_val;
3335 } else
3336 mii_1000t_ctrl_reg = 0;
682011ff
WD		 3337
3338 /* Need to parse both autoneg_advertised and fc and set up
3339 * the appropriate PHY registers. First we will parse for
3340 * autoneg_advertised software override. Since we can advertise
3341 * a plethora of combinations, we need to check each bit
3342 * individually.
3343 */
3344
3345 /* First we clear all the 10/100 mb speed bits in the Auto-Neg
3346 * Advertisement Register (Address 4) and the 1000 mb speed bits in
aa070789 3347 * the 1000Base-T Control Register (Address 9).
682011ff
WD		 3348 */
3349 mii_autoneg_adv_reg &= ~REG4_SPEED_MASK;
3350 mii_1000t_ctrl_reg &= ~REG9_SPEED_MASK;
3351
3352 DEBUGOUT("autoneg_advertised %x\n", hw->autoneg_advertised);
3353
3354 /* Do we want to advertise 10 Mb Half Duplex? */
3355 if (hw->autoneg_advertised & ADVERTISE_10_HALF) {
3356 DEBUGOUT("Advertise 10mb Half duplex\n");
3357 mii_autoneg_adv_reg |= NWAY_AR_10T_HD_CAPS;
3358 }
3359
3360 /* Do we want to advertise 10 Mb Full Duplex? */
3361 if (hw->autoneg_advertised & ADVERTISE_10_FULL) {
3362 DEBUGOUT("Advertise 10mb Full duplex\n");
3363 mii_autoneg_adv_reg |= NWAY_AR_10T_FD_CAPS;
3364 }
3365
3366 /* Do we want to advertise 100 Mb Half Duplex? */
3367 if (hw->autoneg_advertised & ADVERTISE_100_HALF) {
3368 DEBUGOUT("Advertise 100mb Half duplex\n");
3369 mii_autoneg_adv_reg |= NWAY_AR_100TX_HD_CAPS;
3370 }
3371
3372 /* Do we want to advertise 100 Mb Full Duplex? */
3373 if (hw->autoneg_advertised & ADVERTISE_100_FULL) {
3374 DEBUGOUT("Advertise 100mb Full duplex\n");
3375 mii_autoneg_adv_reg |= NWAY_AR_100TX_FD_CAPS;
3376 }
3377
3378 /* We do not allow the Phy to advertise 1000 Mb Half Duplex */
3379 if (hw->autoneg_advertised & ADVERTISE_1000_HALF) {
3380 DEBUGOUT
3381 ("Advertise 1000mb Half duplex requested, request denied!\n");
3382 }
3383
3384 /* Do we want to advertise 1000 Mb Full Duplex? */
3385 if (hw->autoneg_advertised & ADVERTISE_1000_FULL) {
3386 DEBUGOUT("Advertise 1000mb Full duplex\n");
3387 mii_1000t_ctrl_reg |= CR_1000T_FD_CAPS;
3388 }
3389
3390 /* Check for a software override of the flow control settings, and
3391 * setup the PHY advertisement registers accordingly. If
3392 * auto-negotiation is enabled, then software will have to set the
3393 * "PAUSE" bits to the correct value in the Auto-Negotiation
3394 * Advertisement Register (PHY_AUTONEG_ADV) and re-start auto-negotiation.
3395 *
3396 * The possible values of the "fc" parameter are:
1aeed8d7
WD		 3397 * 0: Flow control is completely disabled
3398 * 1: Rx flow control is enabled (we can receive pause frames
3399 * but not send pause frames).
3400 * 2: Tx flow control is enabled (we can send pause frames
3401 * but we do not support receiving pause frames).
3402 * 3: Both Rx and TX flow control (symmetric) are enabled.
682011ff 3403 * other: No software override. The flow control configuration
1aeed8d7 3404 * in the EEPROM is used.
682011ff
WD		 3405 */
3406 switch (hw->fc) {
3407 case e1000_fc_none: /* 0 */
3408 /* Flow control (RX & TX) is completely disabled by a
3409 * software over-ride.
3410 */
3411 mii_autoneg_adv_reg &= ~(NWAY_AR_ASM_DIR | NWAY_AR_PAUSE);
3412 break;
3413 case e1000_fc_rx_pause: /* 1 */
3414 /* RX Flow control is enabled, and TX Flow control is
3415 * disabled, by a software over-ride.
3416 */
3417 /* Since there really isn't a way to advertise that we are
3418 * capable of RX Pause ONLY, we will advertise that we
3419 * support both symmetric and asymmetric RX PAUSE. Later
3420 * (in e1000_config_fc_after_link_up) we will disable the
3421 *hw's ability to send PAUSE frames.
3422 */
3423 mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE);
3424 break;
3425 case e1000_fc_tx_pause: /* 2 */
3426 /* TX Flow control is enabled, and RX Flow control is
3427 * disabled, by a software over-ride.
3428 */
3429 mii_autoneg_adv_reg |= NWAY_AR_ASM_DIR;
3430 mii_autoneg_adv_reg &= ~NWAY_AR_PAUSE;
3431 break;
3432 case e1000_fc_full: /* 3 */
3433 /* Flow control (both RX and TX) is enabled by a software
3434 * over-ride.
3435 */
3436 mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE);
3437 break;
3438 default:
3439 DEBUGOUT("Flow control param set incorrectly\n");
3440 return -E1000_ERR_CONFIG;
3441 }
3442
aa070789
RZ		 3443 ret_val = e1000_write_phy_reg(hw, PHY_AUTONEG_ADV, mii_autoneg_adv_reg);
3444 if (ret_val)
3445 return ret_val;
682011ff
WD		 3446
3447 DEBUGOUT("Auto-Neg Advertising %x\n", mii_autoneg_adv_reg);
3448
aa070789
RZ		 3449 if (hw->phy_type != e1000_phy_ife) {
3450 ret_val = e1000_write_phy_reg(hw, PHY_1000T_CTRL,
3451 mii_1000t_ctrl_reg);
3452 if (ret_val)
3453 return ret_val;
682011ff 3454 }
aa070789
RZ		 3455
3456 return E1000_SUCCESS;
682011ff
WD		 3457}
3458
3459/******************************************************************************
3460* Sets the collision distance in the Transmit Control register
3461*
3462* hw - Struct containing variables accessed by shared code
3463*
3464* Link should have been established previously. Reads the speed and duplex
3465* information from the Device Status register.
3466******************************************************************************/
3467static void
3468e1000_config_collision_dist(struct e1000_hw *hw)
3469{
aa070789
RZ		 3470 uint32_t tctl, coll_dist;
3471
3472 DEBUGFUNC();
3473
3474 if (hw->mac_type < e1000_82543)
3475 coll_dist = E1000_COLLISION_DISTANCE_82542;
3476 else
3477 coll_dist = E1000_COLLISION_DISTANCE;
682011ff
WD		 3478
3479 tctl = E1000_READ_REG(hw, TCTL);
3480
3481 tctl &= ~E1000_TCTL_COLD;
aa070789 3482 tctl |= coll_dist << E1000_COLD_SHIFT;
682011ff
WD		 3483
3484 E1000_WRITE_REG(hw, TCTL, tctl);
3485 E1000_WRITE_FLUSH(hw);
3486}
3487
3488/******************************************************************************
3489* Sets MAC speed and duplex settings to reflect the those in the PHY
3490*
3491* hw - Struct containing variables accessed by shared code
3492* mii_reg - data to write to the MII control register
3493*
3494* The contents of the PHY register containing the needed information need to
3495* be passed in.
3496******************************************************************************/
3497static int
3498e1000_config_mac_to_phy(struct e1000_hw *hw)
3499{
3500 uint32_t ctrl;
3501 uint16_t phy_data;
3502
3503 DEBUGFUNC();
3504
3505 /* Read the Device Control Register and set the bits to Force Speed
3506 * and Duplex.
3507 */
3508 ctrl = E1000_READ_REG(hw, CTRL);
3509 ctrl |= (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
95186063
MV		 3510 ctrl &= ~(E1000_CTRL_ILOS);
3511 ctrl |= (E1000_CTRL_SPD_SEL);
682011ff
WD		 3512
3513 /* Set up duplex in the Device Control and Transmit Control
3514 * registers depending on negotiated values.
3515 */
3516 if (e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS, &phy_data) < 0) {
3517 DEBUGOUT("PHY Read Error\n");
3518 return -E1000_ERR_PHY;
3519 }
3520 if (phy_data & M88E1000_PSSR_DPLX)
3521 ctrl |= E1000_CTRL_FD;
3522 else
3523 ctrl &= ~E1000_CTRL_FD;
3524
3525 e1000_config_collision_dist(hw);
3526
3527 /* Set up speed in the Device Control register depending on
3528 * negotiated values.
3529 */
3530 if ((phy_data & M88E1000_PSSR_SPEED) == M88E1000_PSSR_1000MBS)
3531 ctrl |= E1000_CTRL_SPD_1000;
3532 else if ((phy_data & M88E1000_PSSR_SPEED) == M88E1000_PSSR_100MBS)
3533 ctrl |= E1000_CTRL_SPD_100;
3534 /* Write the configured values back to the Device Control Reg. */
3535 E1000_WRITE_REG(hw, CTRL, ctrl);
3536 return 0;
3537}
3538
3539/******************************************************************************
3540 * Forces the MAC's flow control settings.
8bde7f77 3541 *
682011ff
WD		 3542 * hw - Struct containing variables accessed by shared code
3543 *
3544 * Sets the TFCE and RFCE bits in the device control register to reflect
3545 * the adapter settings. TFCE and RFCE need to be explicitly set by
3546 * software when a Copper PHY is used because autonegotiation is managed
3547 * by the PHY rather than the MAC. Software must also configure these
3548 * bits when link is forced on a fiber connection.
3549 *****************************************************************************/
3550static int
3551e1000_force_mac_fc(struct e1000_hw *hw)
3552{
3553 uint32_t ctrl;
3554
3555 DEBUGFUNC();
3556
3557 /* Get the current configuration of the Device Control Register */
3558 ctrl = E1000_READ_REG(hw, CTRL);
3559
3560 /* Because we didn't get link via the internal auto-negotiation
3561 * mechanism (we either forced link or we got link via PHY
3562 * auto-neg), we have to manually enable/disable transmit an
3563 * receive flow control.
3564 *
3565 * The "Case" statement below enables/disable flow control
3566 * according to the "hw->fc" parameter.
3567 *
3568 * The possible values of the "fc" parameter are:
1aeed8d7
WD		 3569 * 0: Flow control is completely disabled
3570 * 1: Rx flow control is enabled (we can receive pause
3571 * frames but not send pause frames).
3572 * 2: Tx flow control is enabled (we can send pause frames
3573 * frames but we do not receive pause frames).
3574 * 3: Both Rx and TX flow control (symmetric) is enabled.
682011ff
WD		 3575 * other: No other values should be possible at this point.
3576 */
3577
3578 switch (hw->fc) {
3579 case e1000_fc_none:
3580 ctrl &= (~(E1000_CTRL_TFCE | E1000_CTRL_RFCE));
3581 break;
3582 case e1000_fc_rx_pause:
3583 ctrl &= (~E1000_CTRL_TFCE);
3584 ctrl |= E1000_CTRL_RFCE;
3585 break;
3586 case e1000_fc_tx_pause:
3587 ctrl &= (~E1000_CTRL_RFCE);
3588 ctrl |= E1000_CTRL_TFCE;
3589 break;
3590 case e1000_fc_full:
3591 ctrl |= (E1000_CTRL_TFCE | E1000_CTRL_RFCE);
3592 break;
3593 default:
3594 DEBUGOUT("Flow control param set incorrectly\n");
3595 return -E1000_ERR_CONFIG;
3596 }
3597
3598 /* Disable TX Flow Control for 82542 (rev 2.0) */
3599 if (hw->mac_type == e1000_82542_rev2_0)
3600 ctrl &= (~E1000_CTRL_TFCE);
3601
3602 E1000_WRITE_REG(hw, CTRL, ctrl);
3603 return 0;
3604}
3605
3606/******************************************************************************
3607 * Configures flow control settings after link is established
8bde7f77 3608 *
682011ff
WD		 3609 * hw - Struct containing variables accessed by shared code
3610 *
3611 * Should be called immediately after a valid link has been established.
3612 * Forces MAC flow control settings if link was forced. When in MII/GMII mode
3613 * and autonegotiation is enabled, the MAC flow control settings will be set
3614 * based on the flow control negotiated by the PHY. In TBI mode, the TFCE
3615 * and RFCE bits will be automaticaly set to the negotiated flow control mode.
3616 *****************************************************************************/
aa070789 3617static int32_t
682011ff
WD		 3618e1000_config_fc_after_link_up(struct e1000_hw *hw)
3619{
3620 int32_t ret_val;
3621 uint16_t mii_status_reg;
3622 uint16_t mii_nway_adv_reg;
3623 uint16_t mii_nway_lp_ability_reg;
3624 uint16_t speed;
3625 uint16_t duplex;
3626
3627 DEBUGFUNC();
3628
3629 /* Check for the case where we have fiber media and auto-neg failed
3630 * so we had to force link. In this case, we need to force the
3631 * configuration of the MAC to match the "fc" parameter.
3632 */
aa070789
RZ		 3633 if (((hw->media_type == e1000_media_type_fiber) && (hw->autoneg_failed))
3634 || ((hw->media_type == e1000_media_type_internal_serdes)
3635 && (hw->autoneg_failed))
3636 || ((hw->media_type == e1000_media_type_copper)
3637 && (!hw->autoneg))) {
682011ff
WD		 3638 ret_val = e1000_force_mac_fc(hw);
3639 if (ret_val < 0) {
3640 DEBUGOUT("Error forcing flow control settings\n");
3641 return ret_val;
3642 }
3643 }
3644
3645 /* Check for the case where we have copper media and auto-neg is
3646 * enabled. In this case, we need to check and see if Auto-Neg
3647 * has completed, and if so, how the PHY and link partner has
3648 * flow control configured.
3649 */
3650 if (hw->media_type == e1000_media_type_copper) {
3651 /* Read the MII Status Register and check to see if AutoNeg
3652 * has completed. We read this twice because this reg has
3653 * some "sticky" (latched) bits.
3654 */
3655 if (e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg) < 0) {
5abf13e4 3656 DEBUGOUT("PHY Read Error\n");
682011ff
WD		 3657 return -E1000_ERR_PHY;
3658 }
3659 if (e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg) < 0) {
5abf13e4 3660 DEBUGOUT("PHY Read Error\n");
682011ff
WD		 3661 return -E1000_ERR_PHY;
3662 }
3663
3664 if (mii_status_reg & MII_SR_AUTONEG_COMPLETE) {
3665 /* The AutoNeg process has completed, so we now need to
3666 * read both the Auto Negotiation Advertisement Register
3667 * (Address 4) and the Auto_Negotiation Base Page Ability
3668 * Register (Address 5) to determine how flow control was
3669 * negotiated.
3670 */
3671 if (e1000_read_phy_reg
3672 (hw, PHY_AUTONEG_ADV, &mii_nway_adv_reg) < 0) {
3673 DEBUGOUT("PHY Read Error\n");
3674 return -E1000_ERR_PHY;
3675 }
3676 if (e1000_read_phy_reg
3677 (hw, PHY_LP_ABILITY,
3678 &mii_nway_lp_ability_reg) < 0) {
3679 DEBUGOUT("PHY Read Error\n");
3680 return -E1000_ERR_PHY;
3681 }
3682
3683 /* Two bits in the Auto Negotiation Advertisement Register
3684 * (Address 4) and two bits in the Auto Negotiation Base
3685 * Page Ability Register (Address 5) determine flow control
3686 * for both the PHY and the link partner. The following
3687 * table, taken out of the IEEE 802.3ab/D6.0 dated March 25,
3688 * 1999, describes these PAUSE resolution bits and how flow
3689 * control is determined based upon these settings.
3690 * NOTE: DC = Don't Care
3691 *
3692 * LOCAL DEVICE | LINK PARTNER
3693 * PAUSE | ASM_DIR | PAUSE | ASM_DIR | NIC Resolution
3694 *-------|---------|-------|---------|--------------------
1aeed8d7
WD		 3695 * 0 | 0 | DC | DC | e1000_fc_none
3696 * 0 | 1 | 0 | DC | e1000_fc_none
3697 * 0 | 1 | 1 | 0 | e1000_fc_none
3698 * 0 | 1 | 1 | 1 | e1000_fc_tx_pause
3699 * 1 | 0 | 0 | DC | e1000_fc_none
3700 * 1 | DC | 1 | DC | e1000_fc_full
3701 * 1 | 1 | 0 | 0 | e1000_fc_none
3702 * 1 | 1 | 0 | 1 | e1000_fc_rx_pause
682011ff
WD		 3703 *
3704 */
3705 /* Are both PAUSE bits set to 1? If so, this implies
3706 * Symmetric Flow Control is enabled at both ends. The
3707 * ASM_DIR bits are irrelevant per the spec.
3708 *
3709 * For Symmetric Flow Control:
3710 *
3711 * LOCAL DEVICE | LINK PARTNER
3712 * PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result
3713 *-------|---------|-------|---------|--------------------
1aeed8d7 3714 * 1 | DC | 1 | DC | e1000_fc_full
682011ff
WD		 3715 *
3716 */
3717 if ((mii_nway_adv_reg & NWAY_AR_PAUSE) &&
3718 (mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE)) {
3719 /* Now we need to check if the user selected RX ONLY
3720 * of pause frames. In this case, we had to advertise
3721 * FULL flow control because we could not advertise RX
3722 * ONLY. Hence, we must now check to see if we need to
3723 * turn OFF the TRANSMISSION of PAUSE frames.
3724 */
3725 if (hw->original_fc == e1000_fc_full) {
3726 hw->fc = e1000_fc_full;
3727 DEBUGOUT("Flow Control = FULL.\r\n");
3728 } else {
3729 hw->fc = e1000_fc_rx_pause;
3730 DEBUGOUT
3731 ("Flow Control = RX PAUSE frames only.\r\n");
3732 }
3733 }
3734 /* For receiving PAUSE frames ONLY.
3735 *
3736 * LOCAL DEVICE | LINK PARTNER
3737 * PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result
3738 *-------|---------|-------|---------|--------------------
1aeed8d7 3739 * 0 | 1 | 1 | 1 | e1000_fc_tx_pause
682011ff
WD		 3740 *
3741 */
3742 else if (!(mii_nway_adv_reg & NWAY_AR_PAUSE) &&
3743 (mii_nway_adv_reg & NWAY_AR_ASM_DIR) &&
3744 (mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE) &&
3745 (mii_nway_lp_ability_reg & NWAY_LPAR_ASM_DIR))
3746 {
3747 hw->fc = e1000_fc_tx_pause;
3748 DEBUGOUT
3749 ("Flow Control = TX PAUSE frames only.\r\n");
3750 }
3751 /* For transmitting PAUSE frames ONLY.
3752 *
3753 * LOCAL DEVICE | LINK PARTNER
3754 * PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result
3755 *-------|---------|-------|---------|--------------------
1aeed8d7 3756 * 1 | 1 | 0 | 1 | e1000_fc_rx_pause
682011ff
WD		 3757 *
3758 */
3759 else if ((mii_nway_adv_reg & NWAY_AR_PAUSE) &&
3760 (mii_nway_adv_reg & NWAY_AR_ASM_DIR) &&
3761 !(mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE) &&
3762 (mii_nway_lp_ability_reg & NWAY_LPAR_ASM_DIR))
3763 {
3764 hw->fc = e1000_fc_rx_pause;
3765 DEBUGOUT
3766 ("Flow Control = RX PAUSE frames only.\r\n");
3767 }
3768 /* Per the IEEE spec, at this point flow control should be
3769 * disabled. However, we want to consider that we could
3770 * be connected to a legacy switch that doesn't advertise
3771 * desired flow control, but can be forced on the link
3772 * partner. So if we advertised no flow control, that is
3773 * what we will resolve to. If we advertised some kind of
3774 * receive capability (Rx Pause Only or Full Flow Control)
3775 * and the link partner advertised none, we will configure
3776 * ourselves to enable Rx Flow Control only. We can do
3777 * this safely for two reasons: If the link partner really
3778 * didn't want flow control enabled, and we enable Rx, no
3779 * harm done since we won't be receiving any PAUSE frames
3780 * anyway. If the intent on the link partner was to have
3781 * flow control enabled, then by us enabling RX only, we
3782 * can at least receive pause frames and process them.
3783 * This is a good idea because in most cases, since we are
3784 * predominantly a server NIC, more times than not we will
3785 * be asked to delay transmission of packets than asking
3786 * our link partner to pause transmission of frames.
3787 */
3788 else if (hw->original_fc == e1000_fc_none ||
3789 hw->original_fc == e1000_fc_tx_pause) {
3790 hw->fc = e1000_fc_none;
3791 DEBUGOUT("Flow Control = NONE.\r\n");
3792 } else {
3793 hw->fc = e1000_fc_rx_pause;
3794 DEBUGOUT
3795 ("Flow Control = RX PAUSE frames only.\r\n");
3796 }
3797
1aeed8d7 3798 /* Now we need to do one last check... If we auto-
682011ff
WD		 3799 * negotiated to HALF DUPLEX, flow control should not be
3800 * enabled per IEEE 802.3 spec.
3801 */
3802 e1000_get_speed_and_duplex(hw, &speed, &duplex);
3803
3804 if (duplex == HALF_DUPLEX)
3805 hw->fc = e1000_fc_none;
3806
3807 /* Now we call a subroutine to actually force the MAC
3808 * controller to use the correct flow control settings.
3809 */
3810 ret_val = e1000_force_mac_fc(hw);
3811 if (ret_val < 0) {
3812 DEBUGOUT
3813 ("Error forcing flow control settings\n");
3814 return ret_val;
3815 }
3816 } else {
3817 DEBUGOUT
3818 ("Copper PHY and Auto Neg has not completed.\r\n");
3819 }
3820 }
aa070789 3821 return E1000_SUCCESS;
682011ff
WD		 3822}
3823
3824/******************************************************************************
3825 * Checks to see if the link status of the hardware has changed.
3826 *
3827 * hw - Struct containing variables accessed by shared code
3828 *
3829 * Called by any function that needs to check the link status of the adapter.
3830 *****************************************************************************/
3831static int
5c5e707a 3832e1000_check_for_link(struct e1000_hw *hw)
682011ff 3833{
682011ff
WD		 3834 uint32_t rxcw;
3835 uint32_t ctrl;
3836 uint32_t status;
3837 uint32_t rctl;
3838 uint32_t signal;
3839 int32_t ret_val;
3840 uint16_t phy_data;
3841 uint16_t lp_capability;
3842
3843 DEBUGFUNC();
3844
8bde7f77
WD		 3845 /* On adapters with a MAC newer that 82544, SW Defineable pin 1 will be
3846 * set when the optics detect a signal. On older adapters, it will be
682011ff
WD		 3847 * cleared when there is a signal
3848 */
3849 ctrl = E1000_READ_REG(hw, CTRL);
3850 if ((hw->mac_type > e1000_82544) && !(ctrl & E1000_CTRL_ILOS))
3851 signal = E1000_CTRL_SWDPIN1;
3852 else
3853 signal = 0;
3854
3855 status = E1000_READ_REG(hw, STATUS);
3856 rxcw = E1000_READ_REG(hw, RXCW);
3857 DEBUGOUT("ctrl: %#08x status %#08x rxcw %#08x\n", ctrl, status, rxcw);
3858
3859 /* If we have a copper PHY then we only want to go out to the PHY
3860 * registers to see if Auto-Neg has completed and/or if our link
1aeed8d7 3861 * status has changed. The get_link_status flag will be set if we
682011ff
WD		 3862 * receive a Link Status Change interrupt or we have Rx Sequence
3863 * Errors.
3864 */
3865 if ((hw->media_type == e1000_media_type_copper) && hw->get_link_status) {
3866 /* First we want to see if the MII Status Register reports
3867 * link. If so, then we want to get the current speed/duplex
3868 * of the PHY.
3869 * Read the register twice since the link bit is sticky.
3870 */
3871 if (e1000_read_phy_reg(hw, PHY_STATUS, &phy_data) < 0) {
3872 DEBUGOUT("PHY Read Error\n");
3873 return -E1000_ERR_PHY;
3874 }
3875 if (e1000_read_phy_reg(hw, PHY_STATUS, &phy_data) < 0) {
3876 DEBUGOUT("PHY Read Error\n");
3877 return -E1000_ERR_PHY;
3878 }
3879
3880 if (phy_data & MII_SR_LINK_STATUS) {
472d5460 3881 hw->get_link_status = false;
682011ff
WD		 3882 } else {
3883 /* No link detected */
3884 return -E1000_ERR_NOLINK;
3885 }
3886
3887 /* We have a M88E1000 PHY and Auto-Neg is enabled. If we
3888 * have Si on board that is 82544 or newer, Auto
3889 * Speed Detection takes care of MAC speed/duplex
3890 * configuration. So we only need to configure Collision
3891 * Distance in the MAC. Otherwise, we need to force
3892 * speed/duplex on the MAC to the current PHY speed/duplex
3893 * settings.
3894 */
3895 if (hw->mac_type >= e1000_82544)
3896 e1000_config_collision_dist(hw);
3897 else {
3898 ret_val = e1000_config_mac_to_phy(hw);
3899 if (ret_val < 0) {
3900 DEBUGOUT
3901 ("Error configuring MAC to PHY settings\n");
3902 return ret_val;
3903 }
3904 }
3905
8bde7f77 3906 /* Configure Flow Control now that Auto-Neg has completed. First, we
682011ff
WD		 3907 * need to restore the desired flow control settings because we may
3908 * have had to re-autoneg with a different link partner.
3909 */
3910 ret_val = e1000_config_fc_after_link_up(hw);
3911 if (ret_val < 0) {
3912 DEBUGOUT("Error configuring flow control\n");
3913 return ret_val;
3914 }
3915
3916 /* At this point we know that we are on copper and we have
3917 * auto-negotiated link. These are conditions for checking the link
1aeed8d7 3918 * parter capability register. We use the link partner capability to
682011ff
WD		 3919 * determine if TBI Compatibility needs to be turned on or off. If
3920 * the link partner advertises any speed in addition to Gigabit, then
3921 * we assume that they are GMII-based, and TBI compatibility is not
3922 * needed. If no other speeds are advertised, we assume the link
3923 * partner is TBI-based, and we turn on TBI Compatibility.
3924 */
3925 if (hw->tbi_compatibility_en) {
3926 if (e1000_read_phy_reg
3927 (hw, PHY_LP_ABILITY, &lp_capability) < 0) {
3928 DEBUGOUT("PHY Read Error\n");
3929 return -E1000_ERR_PHY;
3930 }
3931 if (lp_capability & (NWAY_LPAR_10T_HD_CAPS |
3932 NWAY_LPAR_10T_FD_CAPS |
3933 NWAY_LPAR_100TX_HD_CAPS |
3934 NWAY_LPAR_100TX_FD_CAPS |
3935 NWAY_LPAR_100T4_CAPS)) {
8bde7f77 3936 /* If our link partner advertises anything in addition to
682011ff
WD		 3937 * gigabit, we do not need to enable TBI compatibility.
3938 */
3939 if (hw->tbi_compatibility_on) {
3940 /* If we previously were in the mode, turn it off. */
3941 rctl = E1000_READ_REG(hw, RCTL);
3942 rctl &= ~E1000_RCTL_SBP;
3943 E1000_WRITE_REG(hw, RCTL, rctl);
472d5460 3944 hw->tbi_compatibility_on = false;
682011ff
WD		 3945 }
3946 } else {
3947 /* If TBI compatibility is was previously off, turn it on. For
3948 * compatibility with a TBI link partner, we will store bad
3949 * packets. Some frames have an additional byte on the end and
3950 * will look like CRC errors to to the hardware.
3951 */
3952 if (!hw->tbi_compatibility_on) {
472d5460 3953 hw->tbi_compatibility_on = true;
682011ff
WD		 3954 rctl = E1000_READ_REG(hw, RCTL);
3955 rctl |= E1000_RCTL_SBP;
3956 E1000_WRITE_REG(hw, RCTL, rctl);
3957 }
3958 }
3959 }
3960 }
3961 /* If we don't have link (auto-negotiation failed or link partner cannot
3962 * auto-negotiate), the cable is plugged in (we have signal), and our
3963 * link partner is not trying to auto-negotiate with us (we are receiving
3964 * idles or data), we need to force link up. We also need to give
3965 * auto-negotiation time to complete, in case the cable was just plugged
3966 * in. The autoneg_failed flag does this.
3967 */
3968 else if ((hw->media_type == e1000_media_type_fiber) &&
3969 (!(status & E1000_STATUS_LU)) &&
3970 ((ctrl & E1000_CTRL_SWDPIN1) == signal) &&
3971 (!(rxcw & E1000_RXCW_C))) {
3972 if (hw->autoneg_failed == 0) {
3973 hw->autoneg_failed = 1;
3974 return 0;
3975 }
3976 DEBUGOUT("NOT RXing /C/, disable AutoNeg and force link.\r\n");
3977
3978 /* Disable auto-negotiation in the TXCW register */
3979 E1000_WRITE_REG(hw, TXCW, (hw->txcw & ~E1000_TXCW_ANE));
3980
3981 /* Force link-up and also force full-duplex. */
3982 ctrl = E1000_READ_REG(hw, CTRL);
3983 ctrl |= (E1000_CTRL_SLU | E1000_CTRL_FD);
3984 E1000_WRITE_REG(hw, CTRL, ctrl);
3985
3986 /* Configure Flow Control after forcing link up. */
3987 ret_val = e1000_config_fc_after_link_up(hw);
3988 if (ret_val < 0) {
3989 DEBUGOUT("Error configuring flow control\n");
3990 return ret_val;
3991 }
3992 }
3993 /* If we are forcing link and we are receiving /C/ ordered sets, re-enable
3994 * auto-negotiation in the TXCW register and disable forced link in the
3995 * Device Control register in an attempt to auto-negotiate with our link
3996 * partner.
3997 */
3998 else if ((hw->media_type == e1000_media_type_fiber) &&
3999 (ctrl & E1000_CTRL_SLU) && (rxcw & E1000_RXCW_C)) {
4000 DEBUGOUT
4001 ("RXing /C/, enable AutoNeg and stop forcing link.\r\n");
4002 E1000_WRITE_REG(hw, TXCW, hw->txcw);
4003 E1000_WRITE_REG(hw, CTRL, (ctrl & ~E1000_CTRL_SLU));
4004 }
4005 return 0;
4006}
4007
aa070789
RZ		 4008/******************************************************************************
4009* Configure the MAC-to-PHY interface for 10/100Mbps
4010*
4011* hw - Struct containing variables accessed by shared code
4012******************************************************************************/
4013static int32_t
4014e1000_configure_kmrn_for_10_100(struct e1000_hw *hw, uint16_t duplex)
4015{
4016 int32_t ret_val = E1000_SUCCESS;
4017 uint32_t tipg;
4018 uint16_t reg_data;
4019
4020 DEBUGFUNC();
4021
4022 reg_data = E1000_KUMCTRLSTA_HD_CTRL_10_100_DEFAULT;
4023 ret_val = e1000_write_kmrn_reg(hw,
4024 E1000_KUMCTRLSTA_OFFSET_HD_CTRL, reg_data);
4025 if (ret_val)
4026 return ret_val;
4027
4028 /* Configure Transmit Inter-Packet Gap */
4029 tipg = E1000_READ_REG(hw, TIPG);
4030 tipg &= ~E1000_TIPG_IPGT_MASK;
4031 tipg |= DEFAULT_80003ES2LAN_TIPG_IPGT_10_100;
4032 E1000_WRITE_REG(hw, TIPG, tipg);
4033
4034 ret_val = e1000_read_phy_reg(hw, GG82563_PHY_KMRN_MODE_CTRL, &reg_data);
4035
4036 if (ret_val)
4037 return ret_val;
4038
4039 if (duplex == HALF_DUPLEX)
4040 reg_data |= GG82563_KMCR_PASS_FALSE_CARRIER;
4041 else
4042 reg_data &= ~GG82563_KMCR_PASS_FALSE_CARRIER;
4043
4044 ret_val = e1000_write_phy_reg(hw, GG82563_PHY_KMRN_MODE_CTRL, reg_data);
4045
4046 return ret_val;
4047}
4048
4049static int32_t
4050e1000_configure_kmrn_for_1000(struct e1000_hw *hw)
4051{
4052 int32_t ret_val = E1000_SUCCESS;
4053 uint16_t reg_data;
4054 uint32_t tipg;
4055
4056 DEBUGFUNC();
4057
4058 reg_data = E1000_KUMCTRLSTA_HD_CTRL_1000_DEFAULT;
4059 ret_val = e1000_write_kmrn_reg(hw,
4060 E1000_KUMCTRLSTA_OFFSET_HD_CTRL, reg_data);
4061 if (ret_val)
4062 return ret_val;
4063
4064 /* Configure Transmit Inter-Packet Gap */
4065 tipg = E1000_READ_REG(hw, TIPG);
4066 tipg &= ~E1000_TIPG_IPGT_MASK;
4067 tipg |= DEFAULT_80003ES2LAN_TIPG_IPGT_1000;
4068 E1000_WRITE_REG(hw, TIPG, tipg);
4069
4070 ret_val = e1000_read_phy_reg(hw, GG82563_PHY_KMRN_MODE_CTRL, &reg_data);
4071
4072 if (ret_val)
4073 return ret_val;
4074
4075 reg_data &= ~GG82563_KMCR_PASS_FALSE_CARRIER;
4076 ret_val = e1000_write_phy_reg(hw, GG82563_PHY_KMRN_MODE_CTRL, reg_data);
4077
4078 return ret_val;
4079}
4080
682011ff
WD		 4081/******************************************************************************
4082 * Detects the current speed and duplex settings of the hardware.
4083 *
4084 * hw - Struct containing variables accessed by shared code
4085 * speed - Speed of the connection
4086 * duplex - Duplex setting of the connection
4087 *****************************************************************************/
aa070789
RZ		 4088static int
4089e1000_get_speed_and_duplex(struct e1000_hw *hw, uint16_t *speed,
4090 uint16_t *duplex)
682011ff
WD		 4091{
4092 uint32_t status;
aa070789
RZ		 4093 int32_t ret_val;
4094 uint16_t phy_data;
682011ff
WD		 4095
4096 DEBUGFUNC();
4097
4098 if (hw->mac_type >= e1000_82543) {
4099 status = E1000_READ_REG(hw, STATUS);
4100 if (status & E1000_STATUS_SPEED_1000) {
4101 *speed = SPEED_1000;
4102 DEBUGOUT("1000 Mbs, ");
4103 } else if (status & E1000_STATUS_SPEED_100) {
4104 *speed = SPEED_100;
4105 DEBUGOUT("100 Mbs, ");
4106 } else {
4107 *speed = SPEED_10;
4108 DEBUGOUT("10 Mbs, ");
4109 }
4110
4111 if (status & E1000_STATUS_FD) {
4112 *duplex = FULL_DUPLEX;
4113 DEBUGOUT("Full Duplex\r\n");
4114 } else {
4115 *duplex = HALF_DUPLEX;
4116 DEBUGOUT(" Half Duplex\r\n");
4117 }
4118 } else {
4119 DEBUGOUT("1000 Mbs, Full Duplex\r\n");
4120 *speed = SPEED_1000;
4121 *duplex = FULL_DUPLEX;
4122 }
aa070789
RZ		 4123
4124 /* IGP01 PHY may advertise full duplex operation after speed downgrade
4125 * even if it is operating at half duplex. Here we set the duplex
4126 * settings to match the duplex in the link partner's capabilities.
4127 */
4128 if (hw->phy_type == e1000_phy_igp && hw->speed_downgraded) {
4129 ret_val = e1000_read_phy_reg(hw, PHY_AUTONEG_EXP, &phy_data);
4130 if (ret_val)
4131 return ret_val;
4132
4133 if (!(phy_data & NWAY_ER_LP_NWAY_CAPS))
4134 *duplex = HALF_DUPLEX;
4135 else {
4136 ret_val = e1000_read_phy_reg(hw,
4137 PHY_LP_ABILITY, &phy_data);
4138 if (ret_val)
4139 return ret_val;
4140 if ((*speed == SPEED_100 &&
4141 !(phy_data & NWAY_LPAR_100TX_FD_CAPS))
4142 || (*speed == SPEED_10
4143 && !(phy_data & NWAY_LPAR_10T_FD_CAPS)))
4144 *duplex = HALF_DUPLEX;
4145 }
4146 }
4147
4148 if ((hw->mac_type == e1000_80003es2lan) &&
4149 (hw->media_type == e1000_media_type_copper)) {
4150 if (*speed == SPEED_1000)
4151 ret_val = e1000_configure_kmrn_for_1000(hw);
4152 else
4153 ret_val = e1000_configure_kmrn_for_10_100(hw, *duplex);
4154 if (ret_val)
4155 return ret_val;
4156 }
4157 return E1000_SUCCESS;
682011ff
WD		 4158}
4159
4160/******************************************************************************
4161* Blocks until autoneg completes or times out (~4.5 seconds)
4162*
4163* hw - Struct containing variables accessed by shared code
4164******************************************************************************/
4165static int
4166e1000_wait_autoneg(struct e1000_hw *hw)
4167{
4168 uint16_t i;
4169 uint16_t phy_data;
4170
4171 DEBUGFUNC();
4172 DEBUGOUT("Waiting for Auto-Neg to complete.\n");
4173
faa765d4 4174 /* We will wait for autoneg to complete or timeout to expire. */
682011ff
WD		 4175 for (i = PHY_AUTO_NEG_TIME; i > 0; i--) {
4176 /* Read the MII Status Register and wait for Auto-Neg
4177 * Complete bit to be set.
4178 */
4179 if (e1000_read_phy_reg(hw, PHY_STATUS, &phy_data) < 0) {
4180 DEBUGOUT("PHY Read Error\n");
4181 return -E1000_ERR_PHY;
4182 }
4183 if (e1000_read_phy_reg(hw, PHY_STATUS, &phy_data) < 0) {
4184 DEBUGOUT("PHY Read Error\n");
4185 return -E1000_ERR_PHY;
4186 }
4187 if (phy_data & MII_SR_AUTONEG_COMPLETE) {
4188 DEBUGOUT("Auto-Neg complete.\n");
4189 return 0;
4190 }
4191 mdelay(100);
4192 }
4193 DEBUGOUT("Auto-Neg timedout.\n");
4194 return -E1000_ERR_TIMEOUT;
4195}
4196
4197/******************************************************************************
4198* Raises the Management Data Clock
4199*
4200* hw - Struct containing variables accessed by shared code
4201* ctrl - Device control register's current value
4202******************************************************************************/
4203static void
4204e1000_raise_mdi_clk(struct e1000_hw *hw, uint32_t * ctrl)
4205{
4206 /* Raise the clock input to the Management Data Clock (by setting the MDC
4207 * bit), and then delay 2 microseconds.
4208 */
4209 E1000_WRITE_REG(hw, CTRL, (*ctrl | E1000_CTRL_MDC));
4210 E1000_WRITE_FLUSH(hw);
4211 udelay(2);
4212}
4213
4214/******************************************************************************
4215* Lowers the Management Data Clock
4216*
4217* hw - Struct containing variables accessed by shared code
4218* ctrl - Device control register's current value
4219******************************************************************************/
4220static void
4221e1000_lower_mdi_clk(struct e1000_hw *hw, uint32_t * ctrl)
4222{
4223 /* Lower the clock input to the Management Data Clock (by clearing the MDC
4224 * bit), and then delay 2 microseconds.
4225 */
4226 E1000_WRITE_REG(hw, CTRL, (*ctrl & ~E1000_CTRL_MDC));
4227 E1000_WRITE_FLUSH(hw);
4228 udelay(2);
4229}
4230
4231/******************************************************************************
4232* Shifts data bits out to the PHY
4233*
4234* hw - Struct containing variables accessed by shared code
4235* data - Data to send out to the PHY
4236* count - Number of bits to shift out
4237*
4238* Bits are shifted out in MSB to LSB order.
4239******************************************************************************/
4240static void
4241e1000_shift_out_mdi_bits(struct e1000_hw *hw, uint32_t data, uint16_t count)
4242{
4243 uint32_t ctrl;
4244 uint32_t mask;
4245
4246 /* We need to shift "count" number of bits out to the PHY. So, the value
8bde7f77 4247 * in the "data" parameter will be shifted out to the PHY one bit at a
682011ff
WD		 4248 * time. In order to do this, "data" must be broken down into bits.
4249 */
4250 mask = 0x01;
4251 mask <<= (count - 1);
4252
4253 ctrl = E1000_READ_REG(hw, CTRL);
4254
4255 /* Set MDIO_DIR and MDC_DIR direction bits to be used as output pins. */
4256 ctrl |= (E1000_CTRL_MDIO_DIR | E1000_CTRL_MDC_DIR);
4257
4258 while (mask) {
4259 /* A "1" is shifted out to the PHY by setting the MDIO bit to "1" and
4260 * then raising and lowering the Management Data Clock. A "0" is
4261 * shifted out to the PHY by setting the MDIO bit to "0" and then
4262 * raising and lowering the clock.
4263 */
4264 if (data & mask)
4265 ctrl |= E1000_CTRL_MDIO;
4266 else
4267 ctrl &= ~E1000_CTRL_MDIO;
4268
4269 E1000_WRITE_REG(hw, CTRL, ctrl);
4270 E1000_WRITE_FLUSH(hw);
4271
4272 udelay(2);
4273
4274 e1000_raise_mdi_clk(hw, &ctrl);
4275 e1000_lower_mdi_clk(hw, &ctrl);
4276
4277 mask = mask >> 1;
4278 }
4279}
4280
4281/******************************************************************************
4282* Shifts data bits in from the PHY
4283*
4284* hw - Struct containing variables accessed by shared code
4285*
8bde7f77 4286* Bits are shifted in in MSB to LSB order.
682011ff
WD		 4287******************************************************************************/
4288static uint16_t
4289e1000_shift_in_mdi_bits(struct e1000_hw *hw)
4290{
4291 uint32_t ctrl;
4292 uint16_t data = 0;
4293 uint8_t i;
4294
4295 /* In order to read a register from the PHY, we need to shift in a total
4296 * of 18 bits from the PHY. The first two bit (turnaround) times are used
4297 * to avoid contention on the MDIO pin when a read operation is performed.
4298 * These two bits are ignored by us and thrown away. Bits are "shifted in"
4299 * by raising the input to the Management Data Clock (setting the MDC bit),
4300 * and then reading the value of the MDIO bit.
4301 */
4302 ctrl = E1000_READ_REG(hw, CTRL);
4303
4304 /* Clear MDIO_DIR (SWDPIO1) to indicate this bit is to be used as input. */
4305 ctrl &= ~E1000_CTRL_MDIO_DIR;
4306 ctrl &= ~E1000_CTRL_MDIO;
4307
4308 E1000_WRITE_REG(hw, CTRL, ctrl);
4309 E1000_WRITE_FLUSH(hw);
4310
4311 /* Raise and Lower the clock before reading in the data. This accounts for
4312 * the turnaround bits. The first clock occurred when we clocked out the
4313 * last bit of the Register Address.
4314 */
4315 e1000_raise_mdi_clk(hw, &ctrl);
4316 e1000_lower_mdi_clk(hw, &ctrl);
4317
4318 for (data = 0, i = 0; i < 16; i++) {
4319 data = data << 1;
4320 e1000_raise_mdi_clk(hw, &ctrl);
4321 ctrl = E1000_READ_REG(hw, CTRL);
4322 /* Check to see if we shifted in a "1". */
4323 if (ctrl & E1000_CTRL_MDIO)
4324 data |= 1;
4325 e1000_lower_mdi_clk(hw, &ctrl);
4326 }
4327
4328 e1000_raise_mdi_clk(hw, &ctrl);
4329 e1000_lower_mdi_clk(hw, &ctrl);
4330
4331 return data;
4332}
4333
4334/*****************************************************************************
4335* Reads the value from a PHY register
4336*
4337* hw - Struct containing variables accessed by shared code
4338* reg_addr - address of the PHY register to read
4339******************************************************************************/
4340static int
4341e1000_read_phy_reg(struct e1000_hw *hw, uint32_t reg_addr, uint16_t * phy_data)
4342{
4343 uint32_t i;
4344 uint32_t mdic = 0;
4345 const uint32_t phy_addr = 1;
4346
4347 if (reg_addr > MAX_PHY_REG_ADDRESS) {
4348 DEBUGOUT("PHY Address %d is out of range\n", reg_addr);
4349 return -E1000_ERR_PARAM;
4350 }
4351
4352 if (hw->mac_type > e1000_82543) {
4353 /* Set up Op-code, Phy Address, and register address in the MDI
4354 * Control register. The MAC will take care of interfacing with the
4355 * PHY to retrieve the desired data.
4356 */
4357 mdic = ((reg_addr << E1000_MDIC_REG_SHIFT) |
4358 (phy_addr << E1000_MDIC_PHY_SHIFT) |
4359 (E1000_MDIC_OP_READ));
4360
4361 E1000_WRITE_REG(hw, MDIC, mdic);
4362
4363 /* Poll the ready bit to see if the MDI read completed */
4364 for (i = 0; i < 64; i++) {
4365 udelay(10);
4366 mdic = E1000_READ_REG(hw, MDIC);
4367 if (mdic & E1000_MDIC_READY)
4368 break;
4369 }
4370 if (!(mdic & E1000_MDIC_READY)) {
4371 DEBUGOUT("MDI Read did not complete\n");
4372 return -E1000_ERR_PHY;
4373 }
4374 if (mdic & E1000_MDIC_ERROR) {
4375 DEBUGOUT("MDI Error\n");
4376 return -E1000_ERR_PHY;
4377 }
4378 *phy_data = (uint16_t) mdic;
4379 } else {
4380 /* We must first send a preamble through the MDIO pin to signal the
4381 * beginning of an MII instruction. This is done by sending 32
4382 * consecutive "1" bits.
4383 */
4384 e1000_shift_out_mdi_bits(hw, PHY_PREAMBLE, PHY_PREAMBLE_SIZE);
4385
4386 /* Now combine the next few fields that are required for a read
4387 * operation. We use this method instead of calling the
4388 * e1000_shift_out_mdi_bits routine five different times. The format of
4389 * a MII read instruction consists of a shift out of 14 bits and is
4390 * defined as follows:
4391 * <Preamble><SOF><Op Code><Phy Addr><Reg Addr>
4392 * followed by a shift in of 18 bits. This first two bits shifted in
4393 * are TurnAround bits used to avoid contention on the MDIO pin when a
4394 * READ operation is performed. These two bits are thrown away
4395 * followed by a shift in of 16 bits which contains the desired data.
4396 */
4397 mdic = ((reg_addr) | (phy_addr << 5) |
4398 (PHY_OP_READ << 10) | (PHY_SOF << 12));
4399
4400 e1000_shift_out_mdi_bits(hw, mdic, 14);
4401
4402 /* Now that we've shifted out the read command to the MII, we need to
4403 * "shift in" the 16-bit value (18 total bits) of the requested PHY
4404 * register address.
4405 */
4406 *phy_data = e1000_shift_in_mdi_bits(hw);
4407 }
4408 return 0;
4409}
4410
4411/******************************************************************************
4412* Writes a value to a PHY register
4413*
4414* hw - Struct containing variables accessed by shared code
4415* reg_addr - address of the PHY register to write
4416* data - data to write to the PHY
4417******************************************************************************/
4418static int
4419e1000_write_phy_reg(struct e1000_hw *hw, uint32_t reg_addr, uint16_t phy_data)
4420{
4421 uint32_t i;
4422 uint32_t mdic = 0;
4423 const uint32_t phy_addr = 1;
4424
4425 if (reg_addr > MAX_PHY_REG_ADDRESS) {
4426 DEBUGOUT("PHY Address %d is out of range\n", reg_addr);
4427 return -E1000_ERR_PARAM;
4428 }
4429
4430 if (hw->mac_type > e1000_82543) {
4431 /* Set up Op-code, Phy Address, register address, and data intended
4432 * for the PHY register in the MDI Control register. The MAC will take
4433 * care of interfacing with the PHY to send the desired data.
4434 */
4435 mdic = (((uint32_t) phy_data) |
4436 (reg_addr << E1000_MDIC_REG_SHIFT) |
4437 (phy_addr << E1000_MDIC_PHY_SHIFT) |
4438 (E1000_MDIC_OP_WRITE));
4439
4440 E1000_WRITE_REG(hw, MDIC, mdic);
4441
4442 /* Poll the ready bit to see if the MDI read completed */
4443 for (i = 0; i < 64; i++) {
4444 udelay(10);
4445 mdic = E1000_READ_REG(hw, MDIC);
4446 if (mdic & E1000_MDIC_READY)
4447 break;
4448 }
4449 if (!(mdic & E1000_MDIC_READY)) {
4450 DEBUGOUT("MDI Write did not complete\n");
4451 return -E1000_ERR_PHY;
4452 }
4453 } else {
4454 /* We'll need to use the SW defined pins to shift the write command
4455 * out to the PHY. We first send a preamble to the PHY to signal the
8bde7f77 4456 * beginning of the MII instruction. This is done by sending 32
682011ff
WD		 4457 * consecutive "1" bits.
4458 */
4459 e1000_shift_out_mdi_bits(hw, PHY_PREAMBLE, PHY_PREAMBLE_SIZE);
4460
8bde7f77 4461 /* Now combine the remaining required fields that will indicate a
682011ff
WD		 4462 * write operation. We use this method instead of calling the
4463 * e1000_shift_out_mdi_bits routine for each field in the command. The
4464 * format of a MII write instruction is as follows:
4465 * <Preamble><SOF><Op Code><Phy Addr><Reg Addr><Turnaround><Data>.
4466 */
4467 mdic = ((PHY_TURNAROUND) | (reg_addr << 2) | (phy_addr << 7) |
4468 (PHY_OP_WRITE << 12) | (PHY_SOF << 14));
4469 mdic <<= 16;
4470 mdic |= (uint32_t) phy_data;
4471
4472 e1000_shift_out_mdi_bits(hw, mdic, 32);
4473 }
4474 return 0;
4475}
4476
aa070789
RZ		 4477/******************************************************************************
4478 * Checks if PHY reset is blocked due to SOL/IDER session, for example.
4479 * Returning E1000_BLK_PHY_RESET isn't necessarily an error. But it's up to
4480 * the caller to figure out how to deal with it.
4481 *
4482 * hw - Struct containing variables accessed by shared code
4483 *
4484 * returns: - E1000_BLK_PHY_RESET
4485 * E1000_SUCCESS
4486 *
4487 *****************************************************************************/
4488int32_t
4489e1000_check_phy_reset_block(struct e1000_hw *hw)
4490{
4491 uint32_t manc = 0;
4492 uint32_t fwsm = 0;
4493
4494 if (hw->mac_type == e1000_ich8lan) {
4495 fwsm = E1000_READ_REG(hw, FWSM);
4496 return (fwsm & E1000_FWSM_RSPCIPHY) ? E1000_SUCCESS
4497 : E1000_BLK_PHY_RESET;
4498 }
4499
4500 if (hw->mac_type > e1000_82547_rev_2)
4501 manc = E1000_READ_REG(hw, MANC);
4502 return (manc & E1000_MANC_BLK_PHY_RST_ON_IDE) ?
4503 E1000_BLK_PHY_RESET : E1000_SUCCESS;
4504}
4505
4506/***************************************************************************
4507 * Checks if the PHY configuration is done
4508 *
4509 * hw: Struct containing variables accessed by shared code
4510 *
4511 * returns: - E1000_ERR_RESET if fail to reset MAC
4512 * E1000_SUCCESS at any other case.
4513 *
4514 ***************************************************************************/
4515static int32_t
4516e1000_get_phy_cfg_done(struct e1000_hw *hw)
4517{
4518 int32_t timeout = PHY_CFG_TIMEOUT;
4519 uint32_t cfg_mask = E1000_EEPROM_CFG_DONE;
4520
4521 DEBUGFUNC();
4522
4523 switch (hw->mac_type) {
4524 default:
4525 mdelay(10);
4526 break;
987b43a1 4527
aa070789
RZ		 4528 case e1000_80003es2lan:
4529 /* Separate *_CFG_DONE_* bit for each port */
987b43a1 4530 if (e1000_is_second_port(hw))
aa070789 4531 cfg_mask = E1000_EEPROM_CFG_DONE_PORT_1;
987b43a1
KM		 4532 /* Fall Through */
4533
aa070789
RZ		 4534 case e1000_82571:
4535 case e1000_82572:
95186063 4536 case e1000_igb:
aa070789 4537 while (timeout) {
95186063 4538 if (hw->mac_type == e1000_igb) {
85d44e42
MA		 4539 if (hw->phy_type == e1000_phy_igc)
4540 break;
95186063
MV		 4541 if (E1000_READ_REG(hw, I210_EEMNGCTL) & cfg_mask)
4542 break;
4543 } else {
4544 if (E1000_READ_REG(hw, EEMNGCTL) & cfg_mask)
4545 break;
4546 }
4547 mdelay(1);
aa070789
RZ		 4548 timeout--;
4549 }
4550 if (!timeout) {
4551 DEBUGOUT("MNG configuration cycle has not "
4552 "completed.\n");
4553 return -E1000_ERR_RESET;
4554 }
4555 break;
4556 }
4557
4558 return E1000_SUCCESS;
4559}
4560
682011ff
WD		 4561/******************************************************************************
4562* Returns the PHY to the power-on reset state
4563*
4564* hw - Struct containing variables accessed by shared code
4565******************************************************************************/
aa070789 4566int32_t
682011ff
WD		 4567e1000_phy_hw_reset(struct e1000_hw *hw)
4568{
987b43a1 4569 uint16_t swfw = E1000_SWFW_PHY0_SM;
aa070789
RZ		 4570 uint32_t ctrl, ctrl_ext;
4571 uint32_t led_ctrl;
4572 int32_t ret_val;
682011ff
WD		 4573
4574 DEBUGFUNC();
4575
aa070789
RZ		 4576 /* In the case of the phy reset being blocked, it's not an error, we
4577 * simply return success without performing the reset. */
4578 ret_val = e1000_check_phy_reset_block(hw);
4579 if (ret_val)
4580 return E1000_SUCCESS;
4581
682011ff
WD		 4582 DEBUGOUT("Resetting Phy...\n");
4583
4584 if (hw->mac_type > e1000_82543) {
987b43a1 4585 if (e1000_is_second_port(hw))
aa070789 4586 swfw = E1000_SWFW_PHY1_SM;
987b43a1 4587
aa070789
RZ		 4588 if (e1000_swfw_sync_acquire(hw, swfw)) {
4589 DEBUGOUT("Unable to acquire swfw sync\n");
4590 return -E1000_ERR_SWFW_SYNC;
4591 }
987b43a1 4592
682011ff
WD		 4593 /* Read the device control register and assert the E1000_CTRL_PHY_RST
4594 * bit. Then, take it out of reset.
4595 */
4596 ctrl = E1000_READ_REG(hw, CTRL);
4597 E1000_WRITE_REG(hw, CTRL, ctrl | E1000_CTRL_PHY_RST);
4598 E1000_WRITE_FLUSH(hw);
aa070789
RZ		 4599
4600 if (hw->mac_type < e1000_82571)
4601 udelay(10);
4602 else
4603 udelay(100);
4604
682011ff
WD		 4605 E1000_WRITE_REG(hw, CTRL, ctrl);
4606 E1000_WRITE_FLUSH(hw);
aa070789
RZ		 4607
4608 if (hw->mac_type >= e1000_82571)
4609 mdelay(10);
3c63dd53 4610
682011ff
WD		 4611 } else {
4612 /* Read the Extended Device Control Register, assert the PHY_RESET_DIR
4613 * bit to put the PHY into reset. Then, take it out of reset.
4614 */
4615 ctrl_ext = E1000_READ_REG(hw, CTRL_EXT);
4616 ctrl_ext |= E1000_CTRL_EXT_SDP4_DIR;
4617 ctrl_ext &= ~E1000_CTRL_EXT_SDP4_DATA;
4618 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
4619 E1000_WRITE_FLUSH(hw);
4620 mdelay(10);
4621 ctrl_ext |= E1000_CTRL_EXT_SDP4_DATA;
4622 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
4623 E1000_WRITE_FLUSH(hw);
4624 }
4625 udelay(150);
aa070789
RZ		 4626
4627 if ((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_82547)) {
4628 /* Configure activity LED after PHY reset */
4629 led_ctrl = E1000_READ_REG(hw, LEDCTL);
4630 led_ctrl &= IGP_ACTIVITY_LED_MASK;
4631 led_ctrl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE);
4632 E1000_WRITE_REG(hw, LEDCTL, led_ctrl);
4633 }
4634
7e2d991d
TH		 4635 e1000_swfw_sync_release(hw, swfw);
4636
aa070789
RZ		 4637 /* Wait for FW to finish PHY configuration. */
4638 ret_val = e1000_get_phy_cfg_done(hw);
4639 if (ret_val != E1000_SUCCESS)
4640 return ret_val;
4641
4642 return ret_val;
4643}
4644
4645/******************************************************************************
4646 * IGP phy init script - initializes the GbE PHY
4647 *
4648 * hw - Struct containing variables accessed by shared code
4649 *****************************************************************************/
4650static void
4651e1000_phy_init_script(struct e1000_hw *hw)
4652{
4653 uint32_t ret_val;
4654 uint16_t phy_saved_data;
4655 DEBUGFUNC();
4656
4657 if (hw->phy_init_script) {
4658 mdelay(20);
4659
4660 /* Save off the current value of register 0x2F5B to be
4661 * restored at the end of this routine. */
4662 ret_val = e1000_read_phy_reg(hw, 0x2F5B, &phy_saved_data);
4663
4664 /* Disabled the PHY transmitter */
4665 e1000_write_phy_reg(hw, 0x2F5B, 0x0003);
4666
4667 mdelay(20);
4668
4669 e1000_write_phy_reg(hw, 0x0000, 0x0140);
4670
4671 mdelay(5);
4672
4673 switch (hw->mac_type) {
4674 case e1000_82541:
4675 case e1000_82547:
4676 e1000_write_phy_reg(hw, 0x1F95, 0x0001);
4677
4678 e1000_write_phy_reg(hw, 0x1F71, 0xBD21);
4679
4680 e1000_write_phy_reg(hw, 0x1F79, 0x0018);
4681
4682 e1000_write_phy_reg(hw, 0x1F30, 0x1600);
4683
4684 e1000_write_phy_reg(hw, 0x1F31, 0x0014);
4685
4686 e1000_write_phy_reg(hw, 0x1F32, 0x161C);
4687
4688 e1000_write_phy_reg(hw, 0x1F94, 0x0003);
4689
4690 e1000_write_phy_reg(hw, 0x1F96, 0x003F);
4691
4692 e1000_write_phy_reg(hw, 0x2010, 0x0008);
4693 break;
4694
4695 case e1000_82541_rev_2:
4696 case e1000_82547_rev_2:
4697 e1000_write_phy_reg(hw, 0x1F73, 0x0099);
4698 break;
4699 default:
4700 break;
4701 }
4702
4703 e1000_write_phy_reg(hw, 0x0000, 0x3300);
4704
4705 mdelay(20);
4706
4707 /* Now enable the transmitter */
56b13b1e
ZRR		 4708 if (!ret_val)
4709 e1000_write_phy_reg(hw, 0x2F5B, phy_saved_data);
aa070789
RZ		 4710
4711 if (hw->mac_type == e1000_82547) {
4712 uint16_t fused, fine, coarse;
4713
4714 /* Move to analog registers page */
4715 e1000_read_phy_reg(hw,
4716 IGP01E1000_ANALOG_SPARE_FUSE_STATUS, &fused);
4717
4718 if (!(fused & IGP01E1000_ANALOG_SPARE_FUSE_ENABLED)) {
4719 e1000_read_phy_reg(hw,
4720 IGP01E1000_ANALOG_FUSE_STATUS, &fused);
4721
4722 fine = fused & IGP01E1000_ANALOG_FUSE_FINE_MASK;
4723 coarse = fused
4724 & IGP01E1000_ANALOG_FUSE_COARSE_MASK;
4725
4726 if (coarse >
4727 IGP01E1000_ANALOG_FUSE_COARSE_THRESH) {
4728 coarse -=
4729 IGP01E1000_ANALOG_FUSE_COARSE_10;
4730 fine -= IGP01E1000_ANALOG_FUSE_FINE_1;
4731 } else if (coarse
4732 == IGP01E1000_ANALOG_FUSE_COARSE_THRESH)
4733 fine -= IGP01E1000_ANALOG_FUSE_FINE_10;
4734
4735 fused = (fused
4736 & IGP01E1000_ANALOG_FUSE_POLY_MASK) |
4737 (fine
4738 & IGP01E1000_ANALOG_FUSE_FINE_MASK) |
4739 (coarse
4740 & IGP01E1000_ANALOG_FUSE_COARSE_MASK);
4741
4742 e1000_write_phy_reg(hw,
4743 IGP01E1000_ANALOG_FUSE_CONTROL, fused);
4744 e1000_write_phy_reg(hw,
4745 IGP01E1000_ANALOG_FUSE_BYPASS,
4746 IGP01E1000_ANALOG_FUSE_ENABLE_SW_CONTROL);
4747 }
4748 }
4749 }
682011ff
WD		 4750}
4751
4752/******************************************************************************
4753* Resets the PHY
4754*
4755* hw - Struct containing variables accessed by shared code
4756*
aa070789 4757* Sets bit 15 of the MII Control register
682011ff 4758******************************************************************************/
aa070789 4759int32_t
682011ff
WD		 4760e1000_phy_reset(struct e1000_hw *hw)
4761{
aa070789 4762 int32_t ret_val;
682011ff
WD		 4763 uint16_t phy_data;
4764
4765 DEBUGFUNC();
4766
aa070789
RZ		 4767 /* In the case of the phy reset being blocked, it's not an error, we
4768 * simply return success without performing the reset. */
4769 ret_val = e1000_check_phy_reset_block(hw);
4770 if (ret_val)
4771 return E1000_SUCCESS;
4772
4773 switch (hw->phy_type) {
4774 case e1000_phy_igp:
4775 case e1000_phy_igp_2:
4776 case e1000_phy_igp_3:
4777 case e1000_phy_ife:
95186063 4778 case e1000_phy_igb:
85d44e42 4779 case e1000_phy_igc:
aa070789
RZ		 4780 ret_val = e1000_phy_hw_reset(hw);
4781 if (ret_val)
4782 return ret_val;
4783 break;
4784 default:
4785 ret_val = e1000_read_phy_reg(hw, PHY_CTRL, &phy_data);
4786 if (ret_val)
4787 return ret_val;
4788
4789 phy_data |= MII_CR_RESET;
4790 ret_val = e1000_write_phy_reg(hw, PHY_CTRL, phy_data);
4791 if (ret_val)
4792 return ret_val;
4793
4794 udelay(1);
4795 break;
682011ff 4796 }
aa070789
RZ		 4797
4798 if (hw->phy_type == e1000_phy_igp || hw->phy_type == e1000_phy_igp_2)
4799 e1000_phy_init_script(hw);
4800
4801 return E1000_SUCCESS;
682011ff
WD		 4802}
4803
1aeed8d7 4804static int e1000_set_phy_type (struct e1000_hw *hw)
ac3315c2 4805{
1aeed8d7
WD		 4806 DEBUGFUNC ();
4807
4808 if (hw->mac_type == e1000_undefined)
4809 return -E1000_ERR_PHY_TYPE;
4810
4811 switch (hw->phy_id) {
4812 case M88E1000_E_PHY_ID:
4813 case M88E1000_I_PHY_ID:
4814 case M88E1011_I_PHY_ID:
aa070789 4815 case M88E1111_I_PHY_ID:
1aeed8d7
WD		 4816 hw->phy_type = e1000_phy_m88;
4817 break;
4818 case IGP01E1000_I_PHY_ID:
4819 if (hw->mac_type == e1000_82541 ||
aa070789
RZ		 4820 hw->mac_type == e1000_82541_rev_2 ||
4821 hw->mac_type == e1000_82547 ||
4822 hw->mac_type == e1000_82547_rev_2) {
1aeed8d7 4823 hw->phy_type = e1000_phy_igp;
aa070789
RZ		 4824 break;
4825 }
4826 case IGP03E1000_E_PHY_ID:
4827 hw->phy_type = e1000_phy_igp_3;
4828 break;
4829 case IFE_E_PHY_ID:
4830 case IFE_PLUS_E_PHY_ID:
4831 case IFE_C_E_PHY_ID:
4832 hw->phy_type = e1000_phy_ife;
4833 break;
4834 case GG82563_E_PHY_ID:
4835 if (hw->mac_type == e1000_80003es2lan) {
4836 hw->phy_type = e1000_phy_gg82563;
1aeed8d7
WD		 4837 break;
4838 }
2c2668f9
RZ		 4839 case BME1000_E_PHY_ID:
4840 hw->phy_type = e1000_phy_bm;
4841 break;
95186063
MV		 4842 case I210_I_PHY_ID:
4843 hw->phy_type = e1000_phy_igb;
4844 break;
85d44e42
MA		 4845 case I225_I_PHY_ID:
4846 hw->phy_type = e1000_phy_igc;
4847 break;
1aeed8d7
WD		 4848 /* Fall Through */
4849 default:
4850 /* Should never have loaded on this device */
4851 hw->phy_type = e1000_phy_undefined;
4852 return -E1000_ERR_PHY_TYPE;
4853 }
4854
4855 return E1000_SUCCESS;
ac3315c2
AS		 4856}
4857
682011ff
WD		 4858/******************************************************************************
4859* Probes the expected PHY address for known PHY IDs
4860*
4861* hw - Struct containing variables accessed by shared code
4862******************************************************************************/
aa070789 4863static int32_t
682011ff
WD		 4864e1000_detect_gig_phy(struct e1000_hw *hw)
4865{
aa070789 4866 int32_t phy_init_status, ret_val;
682011ff 4867 uint16_t phy_id_high, phy_id_low;
472d5460 4868 bool match = false;
682011ff
WD		 4869
4870 DEBUGFUNC();
4871
aa070789
RZ		 4872 /* The 82571 firmware may still be configuring the PHY. In this
4873 * case, we cannot access the PHY until the configuration is done. So
4874 * we explicitly set the PHY values. */
4875 if (hw->mac_type == e1000_82571 ||
4876 hw->mac_type == e1000_82572) {
4877 hw->phy_id = IGP01E1000_I_PHY_ID;
4878 hw->phy_type = e1000_phy_igp_2;
4879 return E1000_SUCCESS;
682011ff 4880 }
aa070789
RZ		 4881
4882 /* ESB-2 PHY reads require e1000_phy_gg82563 to be set because of a
4883 * work- around that forces PHY page 0 to be set or the reads fail.
4884 * The rest of the code in this routine uses e1000_read_phy_reg to
4885 * read the PHY ID. So for ESB-2 we need to have this set so our
4886 * reads won't fail. If the attached PHY is not a e1000_phy_gg82563,
4887 * the routines below will figure this out as well. */
4888 if (hw->mac_type == e1000_80003es2lan)
4889 hw->phy_type = e1000_phy_gg82563;
4890
4891 /* Read the PHY ID Registers to identify which PHY is onboard. */
4892 ret_val = e1000_read_phy_reg(hw, PHY_ID1, &phy_id_high);
4893 if (ret_val)
4894 return ret_val;
4895
682011ff 4896 hw->phy_id = (uint32_t) (phy_id_high << 16);
aa070789
RZ		 4897 udelay(20);
4898 ret_val = e1000_read_phy_reg(hw, PHY_ID2, &phy_id_low);
4899 if (ret_val)
4900 return ret_val;
4901
682011ff 4902 hw->phy_id |= (uint32_t) (phy_id_low & PHY_REVISION_MASK);
aa070789 4903 hw->phy_revision = (uint32_t) phy_id_low & ~PHY_REVISION_MASK;
682011ff
WD		 4904
4905 switch (hw->mac_type) {
4906 case e1000_82543:
4907 if (hw->phy_id == M88E1000_E_PHY_ID)
472d5460 4908 match = true;
682011ff
WD		 4909 break;
4910 case e1000_82544:
4911 if (hw->phy_id == M88E1000_I_PHY_ID)
472d5460 4912 match = true;
682011ff
WD		 4913 break;
4914 case e1000_82540:
4915 case e1000_82545:
aa070789 4916 case e1000_82545_rev_3:
682011ff 4917 case e1000_82546:
aa070789 4918 case e1000_82546_rev_3:
682011ff 4919 if (hw->phy_id == M88E1011_I_PHY_ID)
472d5460 4920 match = true;
682011ff 4921 break;
aa070789 4922 case e1000_82541:
ac3315c2 4923 case e1000_82541_rev_2:
aa070789
RZ		 4924 case e1000_82547:
4925 case e1000_82547_rev_2:
ac3315c2 4926 if(hw->phy_id == IGP01E1000_I_PHY_ID)
472d5460 4927 match = true;
ac3315c2
AS		 4928
4929 break;
aa070789
RZ		 4930 case e1000_82573:
4931 if (hw->phy_id == M88E1111_I_PHY_ID)
472d5460 4932 match = true;
aa070789 4933 break;
2c2668f9
RZ		 4934 case e1000_82574:
4935 if (hw->phy_id == BME1000_E_PHY_ID)
472d5460 4936 match = true;
2c2668f9 4937 break;
aa070789
RZ		 4938 case e1000_80003es2lan:
4939 if (hw->phy_id == GG82563_E_PHY_ID)
472d5460 4940 match = true;
aa070789
RZ		 4941 break;
4942 case e1000_ich8lan:
4943 if (hw->phy_id == IGP03E1000_E_PHY_ID)
472d5460 4944 match = true;
aa070789 4945 if (hw->phy_id == IFE_E_PHY_ID)
472d5460 4946 match = true;
aa070789 4947 if (hw->phy_id == IFE_PLUS_E_PHY_ID)
472d5460 4948 match = true;
aa070789 4949 if (hw->phy_id == IFE_C_E_PHY_ID)
472d5460 4950 match = true;
aa070789 4951 break;
95186063
MV		 4952 case e1000_igb:
4953 if (hw->phy_id == I210_I_PHY_ID)
4954 match = true;
85d44e42
MA		 4955 if (hw->phy_id == I225_I_PHY_ID)
4956 match = true;
95186063 4957 break;
682011ff
WD		 4958 default:
4959 DEBUGOUT("Invalid MAC type %d\n", hw->mac_type);
4960 return -E1000_ERR_CONFIG;
4961 }
ac3315c2
AS		 4962
4963 phy_init_status = e1000_set_phy_type(hw);
4964
4965 if ((match) && (phy_init_status == E1000_SUCCESS)) {
682011ff
WD		 4966 DEBUGOUT("PHY ID 0x%X detected\n", hw->phy_id);
4967 return 0;
4968 }
4969 DEBUGOUT("Invalid PHY ID 0x%X\n", hw->phy_id);
4970 return -E1000_ERR_PHY;
4971}
4972
aa070789
RZ		 4973/*****************************************************************************
4974 * Set media type and TBI compatibility.
4975 *
4976 * hw - Struct containing variables accessed by shared code
4977 * **************************************************************************/
4978void
4979e1000_set_media_type(struct e1000_hw *hw)
4980{
4981 uint32_t status;
4982
4983 DEBUGFUNC();
4984
4985 if (hw->mac_type != e1000_82543) {
4986 /* tbi_compatibility is only valid on 82543 */
472d5460 4987 hw->tbi_compatibility_en = false;
aa070789
RZ		 4988 }
4989
4990 switch (hw->device_id) {
4991 case E1000_DEV_ID_82545GM_SERDES:
4992 case E1000_DEV_ID_82546GB_SERDES:
4993 case E1000_DEV_ID_82571EB_SERDES:
4994 case E1000_DEV_ID_82571EB_SERDES_DUAL:
4995 case E1000_DEV_ID_82571EB_SERDES_QUAD:
4996 case E1000_DEV_ID_82572EI_SERDES:
4997 case E1000_DEV_ID_80003ES2LAN_SERDES_DPT:
4998 hw->media_type = e1000_media_type_internal_serdes;
4999 break;
5000 default:
5001 switch (hw->mac_type) {
5002 case e1000_82542_rev2_0:
5003 case e1000_82542_rev2_1:
5004 hw->media_type = e1000_media_type_fiber;
5005 break;
5006 case e1000_ich8lan:
5007 case e1000_82573:
2c2668f9 5008 case e1000_82574:
95186063 5009 case e1000_igb:
aa070789
RZ		 5010 /* The STATUS_TBIMODE bit is reserved or reused
5011 * for the this device.
5012 */
5013 hw->media_type = e1000_media_type_copper;
5014 break;
5015 default:
5016 status = E1000_READ_REG(hw, STATUS);
5017 if (status & E1000_STATUS_TBIMODE) {
5018 hw->media_type = e1000_media_type_fiber;
5019 /* tbi_compatibility not valid on fiber */
472d5460 5020 hw->tbi_compatibility_en = false;
aa070789
RZ		 5021 } else {
5022 hw->media_type = e1000_media_type_copper;
5023 }
5024 break;
5025 }
5026 }
5027}
5028
682011ff
WD		 5029/**
5030 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
5031 *
5032 * e1000_sw_init initializes the Adapter private data structure.
5033 * Fields are initialized based on PCI device information and
5034 * OS network device settings (MTU size).
5035 **/
5036
5037static int
5c5e707a 5038e1000_sw_init(struct e1000_hw *hw)
682011ff 5039{
682011ff
WD		 5040 int result;
5041
5042 /* PCI config space info */
81dab9af
BM		 5043 dm_pci_read_config16(hw->pdev, PCI_VENDOR_ID, &hw->vendor_id);
5044 dm_pci_read_config16(hw->pdev, PCI_DEVICE_ID, &hw->device_id);
5045 dm_pci_read_config16(hw->pdev, PCI_SUBSYSTEM_VENDOR_ID,
5046 &hw->subsystem_vendor_id);
5047 dm_pci_read_config16(hw->pdev, PCI_SUBSYSTEM_ID, &hw->subsystem_id);
5048
5049 dm_pci_read_config8(hw->pdev, PCI_REVISION_ID, &hw->revision_id);
5050 dm_pci_read_config16(hw->pdev, PCI_COMMAND, &hw->pci_cmd_word);
682011ff
WD		 5051
5052 /* identify the MAC */
5053 result = e1000_set_mac_type(hw);
5054 if (result) {
5c5e707a 5055 E1000_ERR(hw, "Unknown MAC Type\n");
682011ff
WD		 5056 return result;
5057 }
5058
aa070789
RZ		 5059 switch (hw->mac_type) {
5060 default:
5061 break;
5062 case e1000_82541:
5063 case e1000_82547:
5064 case e1000_82541_rev_2:
5065 case e1000_82547_rev_2:
5066 hw->phy_init_script = 1;
5067 break;
5068 }
5069
682011ff
WD		 5070 /* flow control settings */
5071 hw->fc_high_water = E1000_FC_HIGH_THRESH;
5072 hw->fc_low_water = E1000_FC_LOW_THRESH;
5073 hw->fc_pause_time = E1000_FC_PAUSE_TIME;
5074 hw->fc_send_xon = 1;
5075
5076 /* Media type - copper or fiber */
95186063 5077 hw->tbi_compatibility_en = true;
aa070789 5078 e1000_set_media_type(hw);
682011ff
WD		 5079
5080 if (hw->mac_type >= e1000_82543) {
5081 uint32_t status = E1000_READ_REG(hw, STATUS);
5082
5083 if (status & E1000_STATUS_TBIMODE) {
5084 DEBUGOUT("fiber interface\n");
5085 hw->media_type = e1000_media_type_fiber;
5086 } else {
5087 DEBUGOUT("copper interface\n");
5088 hw->media_type = e1000_media_type_copper;
5089 }
5090 } else {
5091 hw->media_type = e1000_media_type_fiber;
5092 }
5093
472d5460 5094 hw->wait_autoneg_complete = true;
682011ff
WD		 5095 if (hw->mac_type < e1000_82543)
5096 hw->report_tx_early = 0;
5097 else
5098 hw->report_tx_early = 1;
5099
682011ff
WD		 5100 return E1000_SUCCESS;
5101}
5102
5103void
5104fill_rx(struct e1000_hw *hw)
5105{
5106 struct e1000_rx_desc *rd;
06e07f65 5107 unsigned long flush_start, flush_end;
682011ff
WD		 5108
5109 rx_last = rx_tail;
5110 rd = rx_base + rx_tail;
5111 rx_tail = (rx_tail + 1) % 8;
5112 memset(rd, 0, 16);
14807449 5113 rd->buffer_addr = cpu_to_le64(virt_to_phys(packet));
873e8e01
MV		 5114
5115 /*
5116 * Make sure there are no stale data in WB over this area, which
5117 * might get written into the memory while the e1000 also writes
5118 * into the same memory area.
5119 */
06e07f65
ML		 5120 invalidate_dcache_range((unsigned long)packet,
5121 (unsigned long)packet + 4096);
873e8e01 5122 /* Dump the DMA descriptor into RAM. */
06e07f65 5123 flush_start = ((unsigned long)rd) & ~(ARCH_DMA_MINALIGN - 1);
873e8e01
MV		 5124 flush_end = flush_start + roundup(sizeof(*rd), ARCH_DMA_MINALIGN);
5125 flush_dcache_range(flush_start, flush_end);
5126
682011ff
WD		 5127 E1000_WRITE_REG(hw, RDT, rx_tail);
5128}
5129
5130/**
5131 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
5132 * @adapter: board private structure
5133 *
5134 * Configure the Tx unit of the MAC after a reset.
5135 **/
5136
5137static void
5138e1000_configure_tx(struct e1000_hw *hw)
5139{
682011ff 5140 unsigned long tctl;
aa070789
RZ		 5141 unsigned long tipg, tarc;
5142 uint32_t ipgr1, ipgr2;
682011ff 5143
14807449
SR		 5144 E1000_WRITE_REG(hw, TDBAL, lower_32_bits(virt_to_phys(tx_base)));
5145 E1000_WRITE_REG(hw, TDBAH, upper_32_bits(virt_to_phys(tx_base)));
682011ff
WD		 5146
5147 E1000_WRITE_REG(hw, TDLEN, 128);
5148
5149 /* Setup the HW Tx Head and Tail descriptor pointers */
5150 E1000_WRITE_REG(hw, TDH, 0);
5151 E1000_WRITE_REG(hw, TDT, 0);
5152 tx_tail = 0;
5153
aa070789
RZ		 5154 /* Set the default values for the Tx Inter Packet Gap timer */
5155 if (hw->mac_type <= e1000_82547_rev_2 &&
5156 (hw->media_type == e1000_media_type_fiber ||
5157 hw->media_type == e1000_media_type_internal_serdes))
5158 tipg = DEFAULT_82543_TIPG_IPGT_FIBER;
5159 else
5160 tipg = DEFAULT_82543_TIPG_IPGT_COPPER;
5161
682011ff
WD		 5162 /* Set the default values for the Tx Inter Packet Gap timer */
5163 switch (hw->mac_type) {
5164 case e1000_82542_rev2_0:
5165 case e1000_82542_rev2_1:
5166 tipg = DEFAULT_82542_TIPG_IPGT;
aa070789
RZ		 5167 ipgr1 = DEFAULT_82542_TIPG_IPGR1;
5168 ipgr2 = DEFAULT_82542_TIPG_IPGR2;
5169 break;
5170 case e1000_80003es2lan:
5171 ipgr1 = DEFAULT_82543_TIPG_IPGR1;
5172 ipgr2 = DEFAULT_80003ES2LAN_TIPG_IPGR2;
682011ff
WD		 5173 break;
5174 default:
aa070789
RZ		 5175 ipgr1 = DEFAULT_82543_TIPG_IPGR1;
5176 ipgr2 = DEFAULT_82543_TIPG_IPGR2;
5177 break;
682011ff 5178 }
aa070789
RZ		 5179 tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT;
5180 tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT;
682011ff 5181 E1000_WRITE_REG(hw, TIPG, tipg);
682011ff
WD		 5182 /* Program the Transmit Control Register */
5183 tctl = E1000_READ_REG(hw, TCTL);
5184 tctl &= ~E1000_TCTL_CT;
5185 tctl |= E1000_TCTL_EN | E1000_TCTL_PSP |
5186 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT);
aa070789
RZ		 5187
5188 if (hw->mac_type == e1000_82571 || hw->mac_type == e1000_82572) {
5189 tarc = E1000_READ_REG(hw, TARC0);
5190 /* set the speed mode bit, we'll clear it if we're not at
5191 * gigabit link later */
5192 /* git bit can be set to 1*/
5193 } else if (hw->mac_type == e1000_80003es2lan) {
5194 tarc = E1000_READ_REG(hw, TARC0);
5195 tarc |= 1;
5196 E1000_WRITE_REG(hw, TARC0, tarc);
5197 tarc = E1000_READ_REG(hw, TARC1);
5198 tarc |= 1;
5199 E1000_WRITE_REG(hw, TARC1, tarc);
5200 }
5201
682011ff
WD		 5202
5203 e1000_config_collision_dist(hw);
aa070789
RZ		 5204 /* Setup Transmit Descriptor Settings for eop descriptor */
5205 hw->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS;
682011ff 5206
aa070789
RZ		 5207 /* Need to set up RS bit */
5208 if (hw->mac_type < e1000_82543)
5209 hw->txd_cmd |= E1000_TXD_CMD_RPS;
682011ff 5210 else
aa070789 5211 hw->txd_cmd |= E1000_TXD_CMD_RS;
95186063
MV		 5212
5213
5214 if (hw->mac_type == e1000_igb) {
5215 E1000_WRITE_REG(hw, TCTL_EXT, 0x42 << 10);
5216
5217 uint32_t reg_txdctl = E1000_READ_REG(hw, TXDCTL);
5218 reg_txdctl |= 1 << 25;
5219 E1000_WRITE_REG(hw, TXDCTL, reg_txdctl);
5220 mdelay(20);
5221 }
5222
aa070789 5223 E1000_WRITE_REG(hw, TCTL, tctl);
682011ff
WD		 5224}
5225
5226/**
5227 * e1000_setup_rctl - configure the receive control register
5228 * @adapter: Board private structure
5229 **/
5230static void
5231e1000_setup_rctl(struct e1000_hw *hw)
5232{
5233 uint32_t rctl;
5234
5235 rctl = E1000_READ_REG(hw, RCTL);
5236
5237 rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
5238
aa070789
RZ		 5239 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | E1000_RCTL_LBM_NO
5240 | E1000_RCTL_RDMTS_HALF; /* |
5241 (hw.mc_filter_type << E1000_RCTL_MO_SHIFT); */
682011ff
WD		 5242
5243 if (hw->tbi_compatibility_on == 1)
5244 rctl |= E1000_RCTL_SBP;
5245 else
5246 rctl &= ~E1000_RCTL_SBP;
5247
5248 rctl &= ~(E1000_RCTL_SZ_4096);
682011ff
WD		 5249 rctl |= E1000_RCTL_SZ_2048;
5250 rctl &= ~(E1000_RCTL_BSEX | E1000_RCTL_LPE);
682011ff
WD		 5251 E1000_WRITE_REG(hw, RCTL, rctl);
5252}
5253
5254/**
5255 * e1000_configure_rx - Configure 8254x Receive Unit after Reset
5256 * @adapter: board private structure
5257 *
5258 * Configure the Rx unit of the MAC after a reset.
5259 **/
5260static void
5261e1000_configure_rx(struct e1000_hw *hw)
5262{
aa070789 5263 unsigned long rctl, ctrl_ext;
682011ff 5264 rx_tail = 0;
1d8a078b 5265
682011ff
WD		 5266 /* make sure receives are disabled while setting up the descriptors */
5267 rctl = E1000_READ_REG(hw, RCTL);
5268 E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN);
682011ff 5269 if (hw->mac_type >= e1000_82540) {
682011ff
WD		 5270 /* Set the interrupt throttling rate. Value is calculated
5271 * as DEFAULT_ITR = 1/(MAX_INTS_PER_SEC * 256ns) */
1aeed8d7
WD		 5272#define MAX_INTS_PER_SEC 8000
5273#define DEFAULT_ITR 1000000000/(MAX_INTS_PER_SEC * 256)
682011ff
WD		 5274 E1000_WRITE_REG(hw, ITR, DEFAULT_ITR);
5275 }
5276
aa070789
RZ		 5277 if (hw->mac_type >= e1000_82571) {
5278 ctrl_ext = E1000_READ_REG(hw, CTRL_EXT);
5279 /* Reset delay timers after every interrupt */
5280 ctrl_ext |= E1000_CTRL_EXT_INT_TIMER_CLR;
5281 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
5282 E1000_WRITE_FLUSH(hw);
5283 }
682011ff 5284 /* Setup the Base and Length of the Rx Descriptor Ring */
14807449
SR		 5285 E1000_WRITE_REG(hw, RDBAL, lower_32_bits(virt_to_phys(rx_base)));
5286 E1000_WRITE_REG(hw, RDBAH, upper_32_bits(virt_to_phys(rx_base)));
682011ff
WD		 5287
5288 E1000_WRITE_REG(hw, RDLEN, 128);
5289
5290 /* Setup the HW Rx Head and Tail Descriptor Pointers */
5291 E1000_WRITE_REG(hw, RDH, 0);
5292 E1000_WRITE_REG(hw, RDT, 0);
682011ff
WD		 5293 /* Enable Receives */
5294
95186063
MV		 5295 if (hw->mac_type == e1000_igb) {
5296
5297 uint32_t reg_rxdctl = E1000_READ_REG(hw, RXDCTL);
5298 reg_rxdctl |= 1 << 25;
5299 E1000_WRITE_REG(hw, RXDCTL, reg_rxdctl);
5300 mdelay(20);
5301 }
5302
682011ff 5303 E1000_WRITE_REG(hw, RCTL, rctl);
95186063 5304
682011ff
WD		 5305 fill_rx(hw);
5306}
5307
5308/**************************************************************************
5309POLL - Wait for a frame
5310***************************************************************************/
5311static int
5c5e707a 5312_e1000_poll(struct e1000_hw *hw)
682011ff 5313{
682011ff 5314 struct e1000_rx_desc *rd;
06e07f65 5315 unsigned long inval_start, inval_end;
873e8e01
MV		 5316 uint32_t len;
5317
682011ff
WD		 5318 /* return true if there's an ethernet packet ready to read */
5319 rd = rx_base + rx_last;
873e8e01
MV		 5320
5321 /* Re-load the descriptor from RAM. */
06e07f65 5322 inval_start = ((unsigned long)rd) & ~(ARCH_DMA_MINALIGN - 1);
873e8e01
MV		 5323 inval_end = inval_start + roundup(sizeof(*rd), ARCH_DMA_MINALIGN);
5324 invalidate_dcache_range(inval_start, inval_end);
5325
a40b2dff 5326 if (!(rd->status & E1000_RXD_STAT_DD))
682011ff 5327 return 0;
5abf13e4 5328 /* DEBUGOUT("recv: packet len=%d\n", rd->length); */
873e8e01 5329 /* Packet received, make sure the data are re-loaded from RAM. */
a40b2dff 5330 len = le16_to_cpu(rd->length);
06e07f65
ML		 5331 invalidate_dcache_range((unsigned long)packet,
5332 (unsigned long)packet +
5333 roundup(len, ARCH_DMA_MINALIGN));
5c5e707a 5334 return len;
682011ff
WD		 5335}
5336
5c5e707a 5337static int _e1000_transmit(struct e1000_hw *hw, void *txpacket, int length)
682011ff 5338{
873e8e01 5339 void *nv_packet = (void *)txpacket;
682011ff
WD		 5340 struct e1000_tx_desc *txp;
5341 int i = 0;
06e07f65 5342 unsigned long flush_start, flush_end;
682011ff
WD		 5343
5344 txp = tx_base + tx_tail;
5345 tx_tail = (tx_tail + 1) % 8;
5346
919c8ede 5347 txp->buffer_addr = cpu_to_le64(virt_to_phys(nv_packet));
aa070789 5348 txp->lower.data = cpu_to_le32(hw->txd_cmd | length);
682011ff 5349 txp->upper.data = 0;
873e8e01
MV		 5350
5351 /* Dump the packet into RAM so e1000 can pick them. */
06e07f65
ML		 5352 flush_dcache_range((unsigned long)nv_packet,
5353 (unsigned long)nv_packet +
5354 roundup(length, ARCH_DMA_MINALIGN));
873e8e01 5355 /* Dump the descriptor into RAM as well. */
06e07f65 5356 flush_start = ((unsigned long)txp) & ~(ARCH_DMA_MINALIGN - 1);
873e8e01
MV		 5357 flush_end = flush_start + roundup(sizeof(*txp), ARCH_DMA_MINALIGN);
5358 flush_dcache_range(flush_start, flush_end);
5359
682011ff
WD		 5360 E1000_WRITE_REG(hw, TDT, tx_tail);
5361
aa070789 5362 E1000_WRITE_FLUSH(hw);
873e8e01
MV		 5363 while (1) {
5364 invalidate_dcache_range(flush_start, flush_end);
5365 if (le32_to_cpu(txp->upper.data) & E1000_TXD_STAT_DD)
5366 break;
682011ff
WD		 5367 if (i++ > TOUT_LOOP) {
5368 DEBUGOUT("e1000: tx timeout\n");
5369 return 0;
5370 }
5371 udelay(10); /* give the nic a chance to write to the register */
5372 }
5373 return 1;
5374}
5375
682011ff 5376static void
5c5e707a 5377_e1000_disable(struct e1000_hw *hw)
682011ff 5378{
682011ff
WD		 5379 /* Turn off the ethernet interface */
5380 E1000_WRITE_REG(hw, RCTL, 0);
5381 E1000_WRITE_REG(hw, TCTL, 0);
5382
5383 /* Clear the transmit ring */
5384 E1000_WRITE_REG(hw, TDH, 0);
5385 E1000_WRITE_REG(hw, TDT, 0);
5386
5387 /* Clear the receive ring */
5388 E1000_WRITE_REG(hw, RDH, 0);
5389 E1000_WRITE_REG(hw, RDT, 0);
5390
682011ff 5391 mdelay(10);
5c5e707a 5392}
682011ff 5393
5c5e707a
SG		 5394/*reset function*/
5395static inline int
5396e1000_reset(struct e1000_hw *hw, unsigned char enetaddr[6])
5397{
5398 e1000_reset_hw(hw);
5399 if (hw->mac_type >= e1000_82544)
5400 E1000_WRITE_REG(hw, WUC, 0);
5401
5402 return e1000_init_hw(hw, enetaddr);
682011ff
WD		 5403}
5404
682011ff 5405static int
5c5e707a 5406_e1000_init(struct e1000_hw *hw, unsigned char enetaddr[6])
682011ff 5407{
682011ff
WD		 5408 int ret_val = 0;
5409
5c5e707a 5410 ret_val = e1000_reset(hw, enetaddr);
682011ff
WD		 5411 if (ret_val < 0) {
5412 if ((ret_val == -E1000_ERR_NOLINK) ||
5413 (ret_val == -E1000_ERR_TIMEOUT)) {
5c5e707a 5414 E1000_ERR(hw, "Valid Link not detected: %d\n", ret_val);
682011ff 5415 } else {
5c5e707a 5416 E1000_ERR(hw, "Hardware Initialization Failed\n");
682011ff 5417 }
5c5e707a 5418 return ret_val;
682011ff
WD		 5419 }
5420 e1000_configure_tx(hw);
5421 e1000_setup_rctl(hw);
5422 e1000_configure_rx(hw);
5c5e707a 5423 return 0;
682011ff
WD		 5424}
5425
aa070789
RZ		 5426/******************************************************************************
5427 * Gets the current PCI bus type of hardware
5428 *
5429 * hw - Struct containing variables accessed by shared code
5430 *****************************************************************************/
5431void e1000_get_bus_type(struct e1000_hw *hw)
5432{
5433 uint32_t status;
5434
5435 switch (hw->mac_type) {
5436 case e1000_82542_rev2_0:
5437 case e1000_82542_rev2_1:
5438 hw->bus_type = e1000_bus_type_pci;
5439 break;
5440 case e1000_82571:
5441 case e1000_82572:
5442 case e1000_82573:
2c2668f9 5443 case e1000_82574:
aa070789 5444 case e1000_80003es2lan:
aa070789 5445 case e1000_ich8lan:
95186063 5446 case e1000_igb:
aa070789
RZ		 5447 hw->bus_type = e1000_bus_type_pci_express;
5448 break;
5449 default:
5450 status = E1000_READ_REG(hw, STATUS);
5451 hw->bus_type = (status & E1000_STATUS_PCIX_MODE) ?
5452 e1000_bus_type_pcix : e1000_bus_type_pci;
5453 break;
5454 }
5455}
5456
81dab9af
BM		 5457static int e1000_init_one(struct e1000_hw *hw, int cardnum,
5458 struct udevice *devno, unsigned char enetaddr[6])
5c5e707a
SG		 5459{
5460 u32 val;
5461
5462 /* Assign the passed-in values */
81dab9af 5463 hw->pdev = devno;
5c5e707a
SG		 5464 hw->cardnum = cardnum;
5465
5466 /* Print a debug message with the IO base address */
81dab9af 5467 dm_pci_read_config32(devno, PCI_BASE_ADDRESS_0, &val);
5c5e707a
SG		 5468 E1000_DBG(hw, "iobase 0x%08x\n", val & 0xfffffff0);
5469
5470 /* Try to enable I/O accesses and bus-mastering */
5471 val = PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER;
81dab9af 5472 dm_pci_write_config32(devno, PCI_COMMAND, val);
5c5e707a
SG		 5473
5474 /* Make sure it worked */
81dab9af 5475 dm_pci_read_config32(devno, PCI_COMMAND, &val);
5c5e707a
SG		 5476 if (!(val & PCI_COMMAND_MEMORY)) {
5477 E1000_ERR(hw, "Can't enable I/O memory\n");
5478 return -ENOSPC;
5479 }
5480 if (!(val & PCI_COMMAND_MASTER)) {
5481 E1000_ERR(hw, "Can't enable bus-mastering\n");
5482 return -EPERM;
5483 }
5484
5485 /* Are these variables needed? */
5486 hw->fc = e1000_fc_default;
5487 hw->original_fc = e1000_fc_default;
5488 hw->autoneg_failed = 0;
5489 hw->autoneg = 1;
5490 hw->get_link_status = true;
5491#ifndef CONFIG_E1000_NO_NVM
5492 hw->eeprom_semaphore_present = true;
5493#endif
12507a2d 5494 hw->hw_addr = dm_pci_map_bar(devno, PCI_BASE_ADDRESS_0, 0, 0,
2635e3b5 5495 PCI_REGION_TYPE, PCI_REGION_MEM);
5c5e707a
SG		 5496 hw->mac_type = e1000_undefined;
5497
5498 /* MAC and Phy settings */
5499 if (e1000_sw_init(hw) < 0) {
5500 E1000_ERR(hw, "Software init failed\n");
5501 return -EIO;
5502 }
5503 if (e1000_check_phy_reset_block(hw))
5504 E1000_ERR(hw, "PHY Reset is blocked!\n");
5505
5506 /* Basic init was OK, reset the hardware and allow SPI access */
5507 e1000_reset_hw(hw);
5508
5509#ifndef CONFIG_E1000_NO_NVM
5510 /* Validate the EEPROM and get chipset information */
5c5e707a
SG		 5511 if (e1000_init_eeprom_params(hw)) {
5512 E1000_ERR(hw, "EEPROM is invalid!\n");
5513 return -EINVAL;
5514 }
5515 if ((E1000_READ_REG(hw, I210_EECD) & E1000_EECD_FLUPD) &&
5516 e1000_validate_eeprom_checksum(hw))
5517 return -ENXIO;
5c5e707a
SG		 5518 e1000_read_mac_addr(hw, enetaddr);
5519#endif
5520 e1000_get_bus_type(hw);
5521
5522#ifndef CONFIG_E1000_NO_NVM
5523 printf("e1000: %02x:%02x:%02x:%02x:%02x:%02x\n ",
5524 enetaddr[0], enetaddr[1], enetaddr[2],
5525 enetaddr[3], enetaddr[4], enetaddr[5]);
5526#else
5527 memset(enetaddr, 0, 6);
5528 printf("e1000: no NVM\n");
5529#endif
5530
5531 return 0;
5532}
5533
5534/* Put the name of a device in a string */
5535static void e1000_name(char *str, int cardnum)
5536{
5537 sprintf(str, "e1000#%u", cardnum);
5538}
5539
3f8905ad 5540static int e1000_write_hwaddr(struct udevice *dev)
8d9bde0d
HL		 5541{
5542#ifndef CONFIG_E1000_NO_NVM
8d9bde0d 5543 unsigned char current_mac[6];
3f8905ad
IR		 5544 struct eth_pdata *plat = dev_get_plat(dev);
5545 struct e1000_hw *hw = dev_get_priv(dev);
5546 u8 *mac = plat->enetaddr;
8d9bde0d
HL		 5547 uint16_t data[3];
5548 int ret_val, i;
5549
5550 DEBUGOUT("%s: mac=%pM\n", __func__, mac);
5551
70018635
TH		 5552 if ((hw->eeprom.type == e1000_eeprom_invm) &&
5553 !(E1000_READ_REG(hw, EECD) & E1000_EECD_FLASH_DETECTED_I210))
5554 return -ENOSYS;
5555
8d9bde0d
HL		 5556 memset(current_mac, 0, 6);
5557
5558 /* Read from EEPROM, not from registers, to make sure
5559 * the address is persistently configured
5560 */
5561 ret_val = e1000_read_mac_addr_from_eeprom(hw, current_mac);
5562 DEBUGOUT("%s: current mac=%pM\n", __func__, current_mac);
5563
5564 /* Only write to EEPROM if the given address is different or
5565 * reading the current address failed
5566 */
5567 if (!ret_val && memcmp(current_mac, mac, 6) == 0)
5568 return 0;
5569
5570 for (i = 0; i < 3; ++i)
5571 data[i] = mac[i * 2 + 1] << 8 | mac[i * 2];
5572
5573 ret_val = e1000_write_eeprom_srwr(hw, 0x0, 3, data);
5574
5575 if (!ret_val)
5576 ret_val = e1000_update_eeprom_checksum_i210(hw);
5577
5578 return ret_val;
5579#else
5580 return 0;
5581#endif
5582}
5583
ce5207e1 5584#ifdef CONFIG_CMD_E1000
09140113
SG		 5585static int do_e1000(struct cmd_tbl *cmdtp, int flag, int argc,
5586 char *const argv[])
ce5207e1 5587{
5c5e707a 5588 unsigned char *mac = NULL;
c6d80a15
SG		 5589 struct eth_pdata *plat;
5590 struct udevice *dev;
5591 char name[30];
5592 int ret;
53fa409f 5593#if defined(CONFIG_E1000_SPI)
ce5207e1 5594 struct e1000_hw *hw;
c6d80a15
SG		 5595#endif
5596 int cardnum;
ce5207e1
KM		 5597
5598 if (argc < 3) {
5599 cmd_usage(cmdtp);
5600 return 1;
5601 }
5602
5603 /* Make sure we can find the requested e1000 card */
0b1284eb 5604 cardnum = dectoul(argv[1], NULL);
c6d80a15
SG		 5605 e1000_name(name, cardnum);
5606 ret = uclass_get_device_by_name(UCLASS_ETH, name, &dev);
5607 if (!ret) {
c69cda25 5608 plat = dev_get_plat(dev);
c6d80a15
SG		 5609 mac = plat->enetaddr;
5610 }
5c5e707a 5611 if (!mac) {
ce5207e1
KM		 5612 printf("e1000: ERROR: No such device: e1000#%s\n", argv[1]);
5613 return 1;
5614 }
5615
5616 if (!strcmp(argv[2], "print-mac-address")) {
ce5207e1
KM		 5617 printf("%02x:%02x:%02x:%02x:%02x:%02x\n",
5618 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
5619 return 0;
5620 }
5621
5622#ifdef CONFIG_E1000_SPI
eb4e8ceb 5623 hw = dev_get_priv(dev);
ce5207e1
KM		 5624 /* Handle the "SPI" subcommand */
5625 if (!strcmp(argv[2], "spi"))
5626 return do_e1000_spi(cmdtp, hw, argc - 3, argv + 3);
5627#endif
5628
5629 cmd_usage(cmdtp);
5630 return 1;
5631}
5632
5633U_BOOT_CMD(
5634 e1000, 7, 0, do_e1000,
5635 "Intel e1000 controller management",
5636 /* */"<card#> print-mac-address\n"
5637#ifdef CONFIG_E1000_SPI
5638 "e1000 <card#> spi show [<offset> [<length>]]\n"
5639 "e1000 <card#> spi dump <addr> <offset> <length>\n"
5640 "e1000 <card#> spi program <addr> <offset> <length>\n"
5641 "e1000 <card#> spi checksum [update]\n"
5642#endif
5643 " - Manage the Intel E1000 PCI device"
5644);
5645#endif /* not CONFIG_CMD_E1000 */
c6d80a15 5646
c6d80a15
SG		 5647static int e1000_eth_start(struct udevice *dev)
5648{
c69cda25 5649 struct eth_pdata *plat = dev_get_plat(dev);
c6d80a15
SG		 5650 struct e1000_hw *hw = dev_get_priv(dev);
5651
5652 return _e1000_init(hw, plat->enetaddr);
5653}
5654
5655static void e1000_eth_stop(struct udevice *dev)
5656{
5657 struct e1000_hw *hw = dev_get_priv(dev);
5658
5659 _e1000_disable(hw);
5660}
5661
5662static int e1000_eth_send(struct udevice *dev, void *packet, int length)
5663{
5664 struct e1000_hw *hw = dev_get_priv(dev);
5665 int ret;
5666
5667 ret = _e1000_transmit(hw, packet, length);
5668
5669 return ret ? 0 : -ETIMEDOUT;
5670}
5671
5672static int e1000_eth_recv(struct udevice *dev, int flags, uchar **packetp)
5673{
5674 struct e1000_hw *hw = dev_get_priv(dev);
5675 int len;
5676
5677 len = _e1000_poll(hw);
5678 if (len)
5679 *packetp = packet;
5680
5681 return len ? len : -EAGAIN;
5682}
5683
5684static int e1000_free_pkt(struct udevice *dev, uchar *packet, int length)
5685{
5686 struct e1000_hw *hw = dev_get_priv(dev);
5687
5688 fill_rx(hw);
5689
5690 return 0;
5691}
5692
5693static int e1000_eth_probe(struct udevice *dev)
5694{
c69cda25 5695 struct eth_pdata *plat = dev_get_plat(dev);
c6d80a15
SG		 5696 struct e1000_hw *hw = dev_get_priv(dev);
5697 int ret;
5698
5699 hw->name = dev->name;
21ccce1b 5700 ret = e1000_init_one(hw, trailing_strtol(dev->name),
81dab9af 5701 dev, plat->enetaddr);
c6d80a15
SG		 5702 if (ret < 0) {
5703 printf(pr_fmt("failed to initialize card: %d\n"), ret);
5704 return ret;
5705 }
5706
5707 return 0;
5708}
5709
5710static int e1000_eth_bind(struct udevice *dev)
5711{
5712 char name[20];
5713
5714 /*
5715 * A simple way to number the devices. When device tree is used this
5716 * is unnecessary, but when the device is just discovered on the PCI
5717 * bus we need a name. We could instead have the uclass figure out
5718 * which devices are different and number them.
5719 */
5720 e1000_name(name, num_cards++);
5721
5722 return device_set_name(dev, name);
5723}
5724
5725static const struct eth_ops e1000_eth_ops = {
5726 .start = e1000_eth_start,
5727 .send = e1000_eth_send,
5728 .recv = e1000_eth_recv,
5729 .stop = e1000_eth_stop,
5730 .free_pkt = e1000_free_pkt,
3f8905ad 5731 .write_hwaddr = e1000_write_hwaddr,
c6d80a15
SG		 5732};
5733
c6d80a15
SG		 5734U_BOOT_DRIVER(eth_e1000) = {
5735 .name = "eth_e1000",
5736 .id = UCLASS_ETH,
c6d80a15
SG		 5737 .bind = e1000_eth_bind,
5738 .probe = e1000_eth_probe,
5739 .ops = &e1000_eth_ops,
41575d8e 5740 .priv_auto = sizeof(struct e1000_hw),
caa4daa2 5741 .plat_auto = sizeof(struct eth_pdata),
c6d80a15
SG		 5742};
5743
5744U_BOOT_PCI_DEVICE(eth_e1000, e1000_supported);
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