1 // SPDX-License-Identifier: GPL-2.0+
2 /**************************************************************************
3 Intel Pro 1000 for ppcboot/das-u-boot
4 Drivers are port from Intel's Linux driver e1000-4.3.15
5 and from Etherboot pro 1000 driver by mrakes at vivato dot net
6 tested on both gig copper and gig fiber boards
7 ***************************************************************************/
8 /*******************************************************************************
9
10
11 Copyright(c) 1999 - 2002 Intel Corporation. All rights reserved.
12
13
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>
28 *
29 * Copyright 2011 Freescale Semiconductor, Inc.
30 */
31
32 #include <common.h>
33 #include <command.h>
34 #include <cpu_func.h>
35 #include <dm.h>
36 #include <errno.h>
37 #include <log.h>
38 #include <malloc.h>
39 #include <memalign.h>
40 #include <net.h>
41 #include <pci.h>
42 #include <linux/delay.h>
43 #include "e1000.h"
44 #include <asm/cache.h>
45
46 #define TOUT_LOOP 100000
47
48 #define E1000_DEFAULT_PCI_PBA 0x00000030
49 #define E1000_DEFAULT_PCIE_PBA 0x000a0026
50
51 /* NIC specific static variables go here */
52
53 /* Intel i210 needs the DMA descriptor rings aligned to 128b */
54 #define E1000_BUFFER_ALIGN 128
55
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 */
62 DEFINE_ALIGN_BUFFER(struct e1000_tx_desc, tx_base, 16, E1000_BUFFER_ALIGN);
63 DEFINE_ALIGN_BUFFER(struct e1000_rx_desc, rx_base, 16, E1000_BUFFER_ALIGN);
64 DEFINE_ALIGN_BUFFER(unsigned char, packet, 4096, E1000_BUFFER_ALIGN);
65
66 static int tx_tail;
67 static int rx_tail, rx_last;
68 #ifdef CONFIG_DM_ETH
69 static int num_cards; /* Number of E1000 devices seen so far */
70 #endif
71
72 static struct pci_device_id e1000_supported[] = {
73 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82542) },
74 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82543GC_FIBER) },
75 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82543GC_COPPER) },
76 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82544EI_COPPER) },
77 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82544EI_FIBER) },
78 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82544GC_COPPER) },
79 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82544GC_LOM) },
80 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82540EM) },
81 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82545EM_COPPER) },
82 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82545GM_COPPER) },
83 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82546EB_COPPER) },
84 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82545EM_FIBER) },
85 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82546EB_FIBER) },
86 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82546GB_COPPER) },
87 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82540EM_LOM) },
88 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82541ER) },
89 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82541GI_LF) },
90 /* E1000 PCIe card */
91 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_COPPER) },
92 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_FIBER) },
93 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_SERDES) },
94 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_QUAD_COPPER) },
95 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571PT_QUAD_COPPER) },
96 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_QUAD_FIBER) },
97 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_QUAD_COPPER_LOWPROFILE) },
98 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_SERDES_DUAL) },
99 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82571EB_SERDES_QUAD) },
100 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82572EI_COPPER) },
101 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82572EI_FIBER) },
102 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82572EI_SERDES) },
103 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82572EI) },
104 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82573E) },
105 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82573E_IAMT) },
106 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82573L) },
107 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82574L) },
108 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82546GB_QUAD_COPPER_KSP3) },
109 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80003ES2LAN_COPPER_DPT) },
110 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80003ES2LAN_SERDES_DPT) },
111 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80003ES2LAN_COPPER_SPT) },
112 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80003ES2LAN_SERDES_SPT) },
113 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_I210_UNPROGRAMMED) },
114 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_I211_UNPROGRAMMED) },
115 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_I210_COPPER) },
116 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_I211_COPPER) },
117 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_I210_COPPER_FLASHLESS) },
118 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_I210_SERDES) },
119 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_I210_SERDES_FLASHLESS) },
120 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_I210_1000BASEKX) },
121
122 {}
123 };
124
125 /* Function forward declarations */
126 static int e1000_setup_link(struct e1000_hw *hw);
127 static int e1000_setup_fiber_link(struct e1000_hw *hw);
128 static int e1000_setup_copper_link(struct e1000_hw *hw);
129 static int e1000_phy_setup_autoneg(struct e1000_hw *hw);
130 static void e1000_config_collision_dist(struct e1000_hw *hw);
131 static int e1000_config_mac_to_phy(struct e1000_hw *hw);
132 static int e1000_config_fc_after_link_up(struct e1000_hw *hw);
133 static int e1000_check_for_link(struct e1000_hw *hw);
134 static int e1000_wait_autoneg(struct e1000_hw *hw);
135 static int e1000_get_speed_and_duplex(struct e1000_hw *hw, uint16_t * speed,
136 uint16_t * duplex);
137 static int e1000_read_phy_reg(struct e1000_hw *hw, uint32_t reg_addr,
138 uint16_t * phy_data);
139 static int e1000_write_phy_reg(struct e1000_hw *hw, uint32_t reg_addr,
140 uint16_t phy_data);
141 static int32_t e1000_phy_hw_reset(struct e1000_hw *hw);
142 static int e1000_phy_reset(struct e1000_hw *hw);
143 static int e1000_detect_gig_phy(struct e1000_hw *hw);
144 static void e1000_set_media_type(struct e1000_hw *hw);
145
146 static int32_t e1000_swfw_sync_acquire(struct e1000_hw *hw, uint16_t mask);
147 static void e1000_swfw_sync_release(struct e1000_hw *hw, uint16_t mask);
148 static int32_t e1000_check_phy_reset_block(struct e1000_hw *hw);
149
150 #ifndef CONFIG_E1000_NO_NVM
151 static void e1000_put_hw_eeprom_semaphore(struct e1000_hw *hw);
152 static int32_t e1000_get_hw_eeprom_semaphore(struct e1000_hw *hw);
153 static int32_t e1000_read_eeprom(struct e1000_hw *hw, uint16_t offset,
154 uint16_t words,
155 uint16_t *data);
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 *****************************************************************************/
e1000_raise_ee_clk(struct e1000_hw * hw,uint32_t * eecd)162 void e1000_raise_ee_clk(struct e1000_hw *hw, uint32_t * eecd)
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 *
176 * hw - Struct containing variables accessed by shared code
177 * eecd - EECD's current value
178 *****************************************************************************/
e1000_lower_ee_clk(struct e1000_hw * hw,uint32_t * eecd)179 void e1000_lower_ee_clk(struct e1000_hw *hw, uint32_t * eecd)
180 {
181 /* Lower the clock input to the EEPROM (by clearing the SK bit), and then
182 * wait 50 microseconds.
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 *****************************************************************************/
197 static void
e1000_shift_out_ee_bits(struct e1000_hw * hw,uint16_t data,uint16_t count)198 e1000_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.
205 * In order to do this, "data" must be broken down into bits.
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 *****************************************************************************/
243 static uint16_t
e1000_shift_in_ee_bits(struct e1000_hw * hw,uint16_t count)244 e1000_shift_in_ee_bits(struct e1000_hw *hw, uint16_t count)
245 {
246 uint32_t eecd;
247 uint32_t i;
248 uint16_t data;
249
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.
255 */
256
257 eecd = E1000_READ_REG(hw, EECD);
258
259 eecd &= ~(E1000_EECD_DO | E1000_EECD_DI);
260 data = 0;
261
262 for (i = 0; i < count; i++) {
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 /******************************************************************************
279 * Returns EEPROM to a "standby" state
280 *
281 * hw - Struct containing variables accessed by shared code
282 *****************************************************************************/
e1000_standby_eeprom(struct e1000_hw * hw)283 void e1000_standby_eeprom(struct e1000_hw *hw)
284 {
285 struct e1000_eeprom_info *eeprom = &hw->eeprom;
286 uint32_t eecd;
287
288 eecd = E1000_READ_REG(hw, EECD);
289
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);
295
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 ****************************************************************************/
e1000_is_onboard_nvm_eeprom(struct e1000_hw * hw)331 static bool e1000_is_onboard_nvm_eeprom(struct e1000_hw *hw)
332 {
333 uint32_t eecd = 0;
334
335 DEBUGFUNC();
336
337 if (hw->mac_type == e1000_ich8lan)
338 return false;
339
340 if (hw->mac_type == e1000_82573 || hw->mac_type == e1000_82574) {
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)
348 return false;
349 }
350 return true;
351 }
352
353 /******************************************************************************
354 * Prepares EEPROM for access
355 *
356 * hw - Struct containing variables accessed by shared code
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.
360 *****************************************************************************/
e1000_acquire_eeprom(struct e1000_hw * hw)361 int32_t e1000_acquire_eeprom(struct e1000_hw *hw)
362 {
363 struct e1000_eeprom_info *eeprom = &hw->eeprom;
364 uint32_t eecd, i = 0;
365
366 DEBUGFUNC();
367
368 if (e1000_swfw_sync_acquire(hw, E1000_SWFW_EEP_SM))
369 return -E1000_ERR_SWFW_SYNC;
370 eecd = E1000_READ_REG(hw, EECD);
371
372 if (hw->mac_type != e1000_82573 && hw->mac_type != e1000_82574) {
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 }
392
393 /* Setup EEPROM for Read/Write */
394
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);
399
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;
411 }
412
413 /******************************************************************************
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.
417 *
418 * hw - Struct containing variables accessed by shared code
419 *****************************************************************************/
e1000_init_eeprom_params(struct e1000_hw * hw)420 static int32_t e1000_init_eeprom_params(struct e1000_hw *hw)
421 {
422 struct e1000_eeprom_info *eeprom = &hw->eeprom;
423 uint32_t eecd;
424 int32_t ret_val = E1000_SUCCESS;
425 uint16_t eeprom_size;
426
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
432 DEBUGFUNC();
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;
444 eeprom->use_eerd = false;
445 eeprom->use_eewr = false;
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 }
462 eeprom->use_eerd = false;
463 eeprom->use_eewr = false;
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 }
492 eeprom->use_eerd = false;
493 eeprom->use_eewr = false;
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 }
507 eeprom->use_eerd = false;
508 eeprom->use_eewr = false;
509 break;
510 case e1000_82573:
511 case e1000_82574:
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;
521 }
522 if (e1000_is_onboard_nvm_eeprom(hw) == false) {
523 eeprom->use_eerd = true;
524 eeprom->use_eewr = true;
525
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;
532 E1000_WRITE_REG(hw, EECD, eecd);
533 }
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 }
546 eeprom->use_eerd = true;
547 eeprom->use_eewr = false;
548 break;
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;
559 default:
560 break;
561 }
562
563 if (eeprom->type == e1000_eeprom_spi ||
564 eeprom->type == e1000_eeprom_invm) {
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;
593 }
594
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 *****************************************************************************/
600 static int32_t
e1000_poll_eerd_eewr_done(struct e1000_hw * hw,int eerd)601 e1000_poll_eerd_eewr_done(struct e1000_hw *hw, int eerd)
602 {
603 uint32_t attempts = 100000;
604 uint32_t i, reg = 0;
605 int32_t done = E1000_ERR_EEPROM;
606
607 for (i = 0; i < attempts; i++) {
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 }
619
620 if (reg & E1000_EEPROM_RW_REG_DONE) {
621 done = E1000_SUCCESS;
622 break;
623 }
624 udelay(5);
625 }
626
627 return done;
628 }
629
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 *****************************************************************************/
638 static int32_t
e1000_read_eeprom_eerd(struct e1000_hw * hw,uint16_t offset,uint16_t words,uint16_t * data)639 e1000_read_eeprom_eerd(struct e1000_hw *hw,
640 uint16_t offset,
641 uint16_t words,
642 uint16_t *data)
643 {
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
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
656 error = e1000_poll_eerd_eewr_done(hw, E1000_EEPROM_POLL_READ);
657
658 if (error)
659 break;
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) >>
666 E1000_EEPROM_RW_REG_DATA);
667 }
668
669 }
670
671 return error;
672 }
673
e1000_release_eeprom(struct e1000_hw * hw)674 void e1000_release_eeprom(struct e1000_hw *hw)
675 {
676 uint32_t eecd;
677
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
686 E1000_WRITE_REG(hw, EECD, eecd);
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);
708 }
709
710 /* Stop requesting EEPROM access */
711 if (hw->mac_type > e1000_82544) {
712 eecd &= ~E1000_EECD_REQ;
713 E1000_WRITE_REG(hw, EECD, eecd);
714 }
715
716 e1000_swfw_sync_release(hw, E1000_SWFW_EEP_SM);
717 }
718
719 /******************************************************************************
720 * Reads a 16 bit word from the EEPROM.
721 *
722 * hw - Struct containing variables accessed by shared code
723 *****************************************************************************/
724 static int32_t
e1000_spi_eeprom_ready(struct e1000_hw * hw)725 e1000_spi_eeprom_ready(struct e1000_hw *hw)
726 {
727 uint16_t retry_count = 0;
728 uint8_t spi_stat_reg;
729
730 DEBUGFUNC();
731
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;
744
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");
756 return -E1000_ERR_EEPROM;
757 }
758
759 return E1000_SUCCESS;
760 }
761
762 /******************************************************************************
763 * Reads a 16 bit word from the EEPROM.
764 *
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
768 *****************************************************************************/
769 static int32_t
e1000_read_eeprom(struct e1000_hw * hw,uint16_t offset,uint16_t words,uint16_t * data)770 e1000_read_eeprom(struct e1000_hw *hw, uint16_t offset,
771 uint16_t words, uint16_t *data)
772 {
773 struct e1000_eeprom_info *eeprom = &hw->eeprom;
774 uint32_t i = 0;
775
776 DEBUGFUNC();
777
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 */
797 if (e1000_is_onboard_nvm_eeprom(hw) == true &&
798 hw->eeprom.use_eerd == false) {
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 */
806 if (eeprom->use_eerd == true)
807 return e1000_read_eeprom_eerd(hw, offset, words, data);
808
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
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 *****************************************************************************/
e1000_write_eeprom_srwr(struct e1000_hw * hw,uint16_t offset,uint16_t words,uint16_t * data)876 static 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
916 out:
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 *****************************************************************************/
e1000_pool_flash_update_done_i210(struct e1000_hw * hw)925 static 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 *****************************************************************************/
e1000_update_flash_i210(struct e1000_hw * hw)947 static 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
967 out:
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 *****************************************************************************/
e1000_update_eeprom_checksum_i210(struct e1000_hw * hw)979 static 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
1026 out:
1027 return ret_val;
1028 }
1029
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 *****************************************************************************/
e1000_validate_eeprom_checksum(struct e1000_hw * hw)1039 static int e1000_validate_eeprom_checksum(struct e1000_hw *hw)
1040 {
1041 uint16_t i, checksum, checksum_reg, *buf;
1042
1043 DEBUGFUNC();
1044
1045 /* Allocate a temporary buffer */
1046 buf = malloc(sizeof(buf[0]) * (EEPROM_CHECKSUM_REG + 1));
1047 if (!buf) {
1048 E1000_ERR(hw, "Unable to allocate EEPROM buffer!\n");
1049 return -E1000_ERR_EEPROM;
1050 }
1051
1052 /* Read the EEPROM */
1053 if (e1000_read_eeprom(hw, 0, EEPROM_CHECKSUM_REG + 1, buf) < 0) {
1054 E1000_ERR(hw, "Unable to read EEPROM!\n");
1055 return -E1000_ERR_EEPROM;
1056 }
1057
1058 /* Compute the checksum */
1059 checksum = 0;
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 */
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);
1073
1074 return -E1000_ERR_EEPROM;
1075 }
1076 #endif /* CONFIG_E1000_NO_NVM */
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 ****************************************************************************/
1086 static int32_t
e1000_set_phy_mode(struct e1000_hw * hw)1087 e1000_set_phy_mode(struct e1000_hw *hw)
1088 {
1089 #ifndef CONFIG_E1000_NO_NVM
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
1113 hw->phy_reset_disable = false;
1114 }
1115 }
1116 #endif
1117 return E1000_SUCCESS;
1118 }
1119
1120 #ifndef CONFIG_E1000_NO_NVM
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 ***************************************************************************/
1131 static int32_t
e1000_get_software_semaphore(struct e1000_hw * hw)1132 e1000_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
1139 if (hw->mac_type != e1000_80003es2lan && hw->mac_type != e1000_igb)
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 }
1159 #endif
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 ***************************************************************************/
1169 static void
e1000_put_hw_eeprom_semaphore(struct e1000_hw * hw)1170 e1000_put_hw_eeprom_semaphore(struct e1000_hw *hw)
1171 {
1172 #ifndef CONFIG_E1000_NO_NVM
1173 uint32_t swsm;
1174
1175 DEBUGFUNC();
1176
1177 if (!hw->eeprom_semaphore_present)
1178 return;
1179
1180 swsm = E1000_READ_REG(hw, SWSM);
1181 if (hw->mac_type == e1000_80003es2lan || hw->mac_type == e1000_igb) {
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);
1187 #endif
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 ***************************************************************************/
1201 static int32_t
e1000_get_hw_eeprom_semaphore(struct e1000_hw * hw)1202 e1000_get_hw_eeprom_semaphore(struct e1000_hw *hw)
1203 {
1204 #ifndef CONFIG_E1000_NO_NVM
1205 int32_t timeout;
1206 uint32_t swsm;
1207
1208 DEBUGFUNC();
1209
1210 if (!hw->eeprom_semaphore_present)
1211 return E1000_SUCCESS;
1212
1213 if (hw->mac_type == e1000_80003es2lan || hw->mac_type == e1000_igb) {
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 }
1241 #endif
1242 return E1000_SUCCESS;
1243 }
1244
1245 /* Take ownership of the PHY */
1246 static int32_t
e1000_swfw_sync_acquire(struct e1000_hw * hw,uint16_t mask)1247 e1000_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
1259 swfw_sync = E1000_READ_REG(hw, SW_FW_SYNC);
1260 if (!(swfw_sync & (fwmask | swmask)))
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
e1000_swfw_sync_release(struct e1000_hw * hw,uint16_t mask)1282 static 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
e1000_is_second_port(struct e1000_hw * hw)1297 static bool e1000_is_second_port(struct e1000_hw *hw)
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)
1304 return true;
1305 /* Fallthrough */
1306 default:
1307 return false;
1308 }
1309 }
1310
1311 #ifndef CONFIG_E1000_NO_NVM
1312 /******************************************************************************
1313 * Reads the adapter's MAC address from the EEPROM
1314 *
1315 * hw - Struct containing variables accessed by shared code
1316 * enetaddr - buffering where the MAC address will be stored
1317 *****************************************************************************/
e1000_read_mac_addr_from_eeprom(struct e1000_hw * hw,unsigned char enetaddr[6])1318 static int e1000_read_mac_addr_from_eeprom(struct e1000_hw *hw,
1319 unsigned char enetaddr[6])
1320 {
1321 uint16_t offset;
1322 uint16_t eeprom_data;
1323 int i;
1324
1325 for (i = 0; i < NODE_ADDRESS_SIZE; i += 2) {
1326 offset = i >> 1;
1327 if (e1000_read_eeprom(hw, offset, 1, &eeprom_data) < 0) {
1328 DEBUGOUT("EEPROM Read Error\n");
1329 return -E1000_ERR_EEPROM;
1330 }
1331 enetaddr[i] = eeprom_data & 0xff;
1332 enetaddr[i + 1] = (eeprom_data >> 8) & 0xff;
1333 }
1334
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 *****************************************************************************/
e1000_read_mac_addr_from_regs(struct e1000_hw * hw,unsigned char enetaddr[6])1344 static 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 *****************************************************************************/
e1000_read_mac_addr(struct e1000_hw * hw,unsigned char enetaddr[6])1379 static 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
1392 /* Invert the last bit if this is the second device */
1393 if (e1000_is_second_port(hw))
1394 enetaddr[5] ^= 1;
1395
1396 return 0;
1397 }
1398 #endif
1399
1400 /******************************************************************************
1401 * Initializes receive address filters.
1402 *
1403 * hw - Struct containing variables accessed by shared code
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 *****************************************************************************/
1409 static void
e1000_init_rx_addrs(struct e1000_hw * hw,unsigned char enetaddr[6])1410 e1000_init_rx_addrs(struct e1000_hw *hw, unsigned char enetaddr[6])
1411 {
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");
1420 addr_low = (enetaddr[0] |
1421 (enetaddr[1] << 8) |
1422 (enetaddr[2] << 16) | (enetaddr[3] << 24));
1423
1424 addr_high = (enetaddr[4] | (enetaddr[5] << 8) | E1000_RAH_AV);
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 *****************************************************************************/
1442 static void
e1000_clear_vfta(struct e1000_hw * hw)1443 e1000_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.
1453 *
1454 * hw - Struct containing variables accessed by shared code
1455 *****************************************************************************/
1456 int32_t
e1000_set_mac_type(struct e1000_hw * hw)1457 e1000_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:
1487 case E1000_DEV_ID_82540EP:
1488 case E1000_DEV_ID_82540EP_LOM:
1489 case E1000_DEV_ID_82540EP_LP:
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;
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;
1501 case E1000_DEV_ID_82546EB_COPPER:
1502 case E1000_DEV_ID_82546EB_FIBER:
1503 case E1000_DEV_ID_82546EB_QUAD_COPPER:
1504 hw->mac_type = e1000_82546;
1505 break;
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;
1519 case E1000_DEV_ID_82541ER:
1520 case E1000_DEV_ID_82541GI:
1521 case E1000_DEV_ID_82541GI_LF:
1522 case E1000_DEV_ID_82541GI_MOBILE:
1523 hw->mac_type = e1000_82541_rev_2;
1524 break;
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;
1554 case E1000_DEV_ID_82574L:
1555 hw->mac_type = e1000_82574;
1556 break;
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;
1572 case PCI_DEVICE_ID_INTEL_I210_UNPROGRAMMED:
1573 case PCI_DEVICE_ID_INTEL_I211_UNPROGRAMMED:
1574 case PCI_DEVICE_ID_INTEL_I210_COPPER:
1575 case PCI_DEVICE_ID_INTEL_I211_COPPER:
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:
1580 hw->mac_type = e1000_igb;
1581 break;
1582 default:
1583 /* Should never have loaded on this device */
1584 return -E1000_ERR_MAC_TYPE;
1585 }
1586 return E1000_SUCCESS;
1587 }
1588
1589 /******************************************************************************
1590 * Reset the transmit and receive units; mask and clear all interrupts.
1591 *
1592 * hw - Struct containing variables accessed by shared code
1593 *****************************************************************************/
1594 void
e1000_reset_hw(struct e1000_hw * hw)1595 e1000_reset_hw(struct e1000_hw *hw)
1596 {
1597 uint32_t ctrl;
1598 uint32_t ctrl_ext;
1599 uint32_t manc;
1600 uint32_t pba = 0;
1601 uint32_t reg;
1602
1603 DEBUGFUNC();
1604
1605 /* get the correct pba value for both PCI and PCIe*/
1606 if (hw->mac_type < e1000_82571)
1607 pba = E1000_DEFAULT_PCI_PBA;
1608 else
1609 pba = E1000_DEFAULT_PCIE_PBA;
1610
1611 /* For 82542 (rev 2.0), disable MWI before issuing a device reset */
1612 if (hw->mac_type == e1000_82542_rev2_0) {
1613 DEBUGOUT("Disabling MWI on 82542 rev 2.0\n");
1614 #ifdef CONFIG_DM_ETH
1615 dm_pci_write_config16(hw->pdev, PCI_COMMAND,
1616 hw->pci_cmd_word & ~PCI_COMMAND_INVALIDATE);
1617 #else
1618 pci_write_config_word(hw->pdev, PCI_COMMAND,
1619 hw->pci_cmd_word & ~PCI_COMMAND_INVALIDATE);
1620 #endif
1621 }
1622
1623 /* Clear interrupt mask to stop board from generating interrupts */
1624 DEBUGOUT("Masking off all interrupts\n");
1625 if (hw->mac_type == e1000_igb)
1626 E1000_WRITE_REG(hw, I210_IAM, 0);
1627 E1000_WRITE_REG(hw, IMC, 0xffffffff);
1628
1629 /* Disable the Transmit and Receive units. Then delay to allow
1630 * any pending transactions to complete before we hit the MAC with
1631 * the global reset.
1632 */
1633 E1000_WRITE_REG(hw, RCTL, 0);
1634 E1000_WRITE_REG(hw, TCTL, E1000_TCTL_PSP);
1635 E1000_WRITE_FLUSH(hw);
1636
1637 if (hw->mac_type == e1000_igb) {
1638 E1000_WRITE_REG(hw, RXPBS, I210_RXPBSIZE_DEFAULT);
1639 E1000_WRITE_REG(hw, TXPBS, I210_TXPBSIZE_DEFAULT);
1640 }
1641
1642 /* The tbi_compatibility_on Flag must be cleared when Rctl is cleared. */
1643 hw->tbi_compatibility_on = false;
1644
1645 /* Delay to allow any outstanding PCI transactions to complete before
1646 * resetting the device
1647 */
1648 mdelay(10);
1649
1650 /* Issue a global reset to the MAC. This will reset the chip's
1651 * transmit, receive, DMA, and link units. It will not effect
1652 * the current PCI configuration. The global reset bit is self-
1653 * clearing, and should clear within a microsecond.
1654 */
1655 DEBUGOUT("Issuing a global reset to MAC\n");
1656 ctrl = E1000_READ_REG(hw, CTRL);
1657
1658 E1000_WRITE_REG(hw, CTRL, (ctrl | E1000_CTRL_RST));
1659
1660 /* Force a reload from the EEPROM if necessary */
1661 if (hw->mac_type == e1000_igb) {
1662 mdelay(20);
1663 reg = E1000_READ_REG(hw, STATUS);
1664 if (reg & E1000_STATUS_PF_RST_DONE)
1665 DEBUGOUT("PF OK\n");
1666 reg = E1000_READ_REG(hw, I210_EECD);
1667 if (reg & E1000_EECD_AUTO_RD)
1668 DEBUGOUT("EEC OK\n");
1669 } else if (hw->mac_type < e1000_82540) {
1670 /* Wait for reset to complete */
1671 udelay(10);
1672 ctrl_ext = E1000_READ_REG(hw, CTRL_EXT);
1673 ctrl_ext |= E1000_CTRL_EXT_EE_RST;
1674 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
1675 E1000_WRITE_FLUSH(hw);
1676 /* Wait for EEPROM reload */
1677 mdelay(2);
1678 } else {
1679 /* Wait for EEPROM reload (it happens automatically) */
1680 mdelay(4);
1681 /* Dissable HW ARPs on ASF enabled adapters */
1682 manc = E1000_READ_REG(hw, MANC);
1683 manc &= ~(E1000_MANC_ARP_EN);
1684 E1000_WRITE_REG(hw, MANC, manc);
1685 }
1686
1687 /* Clear interrupt mask to stop board from generating interrupts */
1688 DEBUGOUT("Masking off all interrupts\n");
1689 if (hw->mac_type == e1000_igb)
1690 E1000_WRITE_REG(hw, I210_IAM, 0);
1691 E1000_WRITE_REG(hw, IMC, 0xffffffff);
1692
1693 /* Clear any pending interrupt events. */
1694 E1000_READ_REG(hw, ICR);
1695
1696 /* If MWI was previously enabled, reenable it. */
1697 if (hw->mac_type == e1000_82542_rev2_0) {
1698 #ifdef CONFIG_DM_ETH
1699 dm_pci_write_config16(hw->pdev, PCI_COMMAND, hw->pci_cmd_word);
1700 #else
1701 pci_write_config_word(hw->pdev, PCI_COMMAND, hw->pci_cmd_word);
1702 #endif
1703 }
1704 if (hw->mac_type != e1000_igb)
1705 E1000_WRITE_REG(hw, PBA, pba);
1706 }
1707
1708 /******************************************************************************
1709 *
1710 * Initialize a number of hardware-dependent bits
1711 *
1712 * hw: Struct containing variables accessed by shared code
1713 *
1714 * This function contains hardware limitation workarounds for PCI-E adapters
1715 *
1716 *****************************************************************************/
1717 static void
e1000_initialize_hardware_bits(struct e1000_hw * hw)1718 e1000_initialize_hardware_bits(struct e1000_hw *hw)
1719 {
1720 if ((hw->mac_type >= e1000_82571) &&
1721 (!hw->initialize_hw_bits_disable)) {
1722 /* Settings common to all PCI-express silicon */
1723 uint32_t reg_ctrl, reg_ctrl_ext;
1724 uint32_t reg_tarc0, reg_tarc1;
1725 uint32_t reg_tctl;
1726 uint32_t reg_txdctl, reg_txdctl1;
1727
1728 /* link autonegotiation/sync workarounds */
1729 reg_tarc0 = E1000_READ_REG(hw, TARC0);
1730 reg_tarc0 &= ~((1 << 30)|(1 << 29)|(1 << 28)|(1 << 27));
1731
1732 /* Enable not-done TX descriptor counting */
1733 reg_txdctl = E1000_READ_REG(hw, TXDCTL);
1734 reg_txdctl |= E1000_TXDCTL_COUNT_DESC;
1735 E1000_WRITE_REG(hw, TXDCTL, reg_txdctl);
1736
1737 reg_txdctl1 = E1000_READ_REG(hw, TXDCTL1);
1738 reg_txdctl1 |= E1000_TXDCTL_COUNT_DESC;
1739 E1000_WRITE_REG(hw, TXDCTL1, reg_txdctl1);
1740
1741
1742 switch (hw->mac_type) {
1743 case e1000_igb: /* IGB is cool */
1744 return;
1745 case e1000_82571:
1746 case e1000_82572:
1747 /* Clear PHY TX compatible mode bits */
1748 reg_tarc1 = E1000_READ_REG(hw, TARC1);
1749 reg_tarc1 &= ~((1 << 30)|(1 << 29));
1750
1751 /* link autonegotiation/sync workarounds */
1752 reg_tarc0 |= ((1 << 26)|(1 << 25)|(1 << 24)|(1 << 23));
1753
1754 /* TX ring control fixes */
1755 reg_tarc1 |= ((1 << 26)|(1 << 25)|(1 << 24));
1756
1757 /* Multiple read bit is reversed polarity */
1758 reg_tctl = E1000_READ_REG(hw, TCTL);
1759 if (reg_tctl & E1000_TCTL_MULR)
1760 reg_tarc1 &= ~(1 << 28);
1761 else
1762 reg_tarc1 |= (1 << 28);
1763
1764 E1000_WRITE_REG(hw, TARC1, reg_tarc1);
1765 break;
1766 case e1000_82573:
1767 case e1000_82574:
1768 reg_ctrl_ext = E1000_READ_REG(hw, CTRL_EXT);
1769 reg_ctrl_ext &= ~(1 << 23);
1770 reg_ctrl_ext |= (1 << 22);
1771
1772 /* TX byte count fix */
1773 reg_ctrl = E1000_READ_REG(hw, CTRL);
1774 reg_ctrl &= ~(1 << 29);
1775
1776 E1000_WRITE_REG(hw, CTRL_EXT, reg_ctrl_ext);
1777 E1000_WRITE_REG(hw, CTRL, reg_ctrl);
1778 break;
1779 case e1000_80003es2lan:
1780 /* improve small packet performace for fiber/serdes */
1781 if ((hw->media_type == e1000_media_type_fiber)
1782 || (hw->media_type ==
1783 e1000_media_type_internal_serdes)) {
1784 reg_tarc0 &= ~(1 << 20);
1785 }
1786
1787 /* Multiple read bit is reversed polarity */
1788 reg_tctl = E1000_READ_REG(hw, TCTL);
1789 reg_tarc1 = E1000_READ_REG(hw, TARC1);
1790 if (reg_tctl & E1000_TCTL_MULR)
1791 reg_tarc1 &= ~(1 << 28);
1792 else
1793 reg_tarc1 |= (1 << 28);
1794
1795 E1000_WRITE_REG(hw, TARC1, reg_tarc1);
1796 break;
1797 case e1000_ich8lan:
1798 /* Reduce concurrent DMA requests to 3 from 4 */
1799 if ((hw->revision_id < 3) ||
1800 ((hw->device_id != E1000_DEV_ID_ICH8_IGP_M_AMT) &&
1801 (hw->device_id != E1000_DEV_ID_ICH8_IGP_M)))
1802 reg_tarc0 |= ((1 << 29)|(1 << 28));
1803
1804 reg_ctrl_ext = E1000_READ_REG(hw, CTRL_EXT);
1805 reg_ctrl_ext |= (1 << 22);
1806 E1000_WRITE_REG(hw, CTRL_EXT, reg_ctrl_ext);
1807
1808 /* workaround TX hang with TSO=on */
1809 reg_tarc0 |= ((1 << 27)|(1 << 26)|(1 << 24)|(1 << 23));
1810
1811 /* Multiple read bit is reversed polarity */
1812 reg_tctl = E1000_READ_REG(hw, TCTL);
1813 reg_tarc1 = E1000_READ_REG(hw, TARC1);
1814 if (reg_tctl & E1000_TCTL_MULR)
1815 reg_tarc1 &= ~(1 << 28);
1816 else
1817 reg_tarc1 |= (1 << 28);
1818
1819 /* workaround TX hang with TSO=on */
1820 reg_tarc1 |= ((1 << 30)|(1 << 26)|(1 << 24));
1821
1822 E1000_WRITE_REG(hw, TARC1, reg_tarc1);
1823 break;
1824 default:
1825 break;
1826 }
1827
1828 E1000_WRITE_REG(hw, TARC0, reg_tarc0);
1829 }
1830 }
1831
1832 /******************************************************************************
1833 * Performs basic configuration of the adapter.
1834 *
1835 * hw - Struct containing variables accessed by shared code
1836 *
1837 * Assumes that the controller has previously been reset and is in a
1838 * post-reset uninitialized state. Initializes the receive address registers,
1839 * multicast table, and VLAN filter table. Calls routines to setup link
1840 * configuration and flow control settings. Clears all on-chip counters. Leaves
1841 * the transmit and receive units disabled and uninitialized.
1842 *****************************************************************************/
1843 static int
e1000_init_hw(struct e1000_hw * hw,unsigned char enetaddr[6])1844 e1000_init_hw(struct e1000_hw *hw, unsigned char enetaddr[6])
1845 {
1846 uint32_t ctrl;
1847 uint32_t i;
1848 int32_t ret_val;
1849 uint16_t pcix_cmd_word;
1850 uint16_t pcix_stat_hi_word;
1851 uint16_t cmd_mmrbc;
1852 uint16_t stat_mmrbc;
1853 uint32_t mta_size;
1854 uint32_t reg_data;
1855 uint32_t ctrl_ext;
1856 DEBUGFUNC();
1857 /* force full DMA clock frequency for 10/100 on ICH8 A0-B0 */
1858 if ((hw->mac_type == e1000_ich8lan) &&
1859 ((hw->revision_id < 3) ||
1860 ((hw->device_id != E1000_DEV_ID_ICH8_IGP_M_AMT) &&
1861 (hw->device_id != E1000_DEV_ID_ICH8_IGP_M)))) {
1862 reg_data = E1000_READ_REG(hw, STATUS);
1863 reg_data &= ~0x80000000;
1864 E1000_WRITE_REG(hw, STATUS, reg_data);
1865 }
1866 /* Do not need initialize Identification LED */
1867
1868 /* Set the media type and TBI compatibility */
1869 e1000_set_media_type(hw);
1870
1871 /* Must be called after e1000_set_media_type
1872 * because media_type is used */
1873 e1000_initialize_hardware_bits(hw);
1874
1875 /* Disabling VLAN filtering. */
1876 DEBUGOUT("Initializing the IEEE VLAN\n");
1877 /* VET hardcoded to standard value and VFTA removed in ICH8 LAN */
1878 if (hw->mac_type != e1000_ich8lan) {
1879 if (hw->mac_type < e1000_82545_rev_3)
1880 E1000_WRITE_REG(hw, VET, 0);
1881 e1000_clear_vfta(hw);
1882 }
1883
1884 /* For 82542 (rev 2.0), disable MWI and put the receiver into reset */
1885 if (hw->mac_type == e1000_82542_rev2_0) {
1886 DEBUGOUT("Disabling MWI on 82542 rev 2.0\n");
1887 #ifdef CONFIG_DM_ETH
1888 dm_pci_write_config16(hw->pdev, PCI_COMMAND,
1889 hw->
1890 pci_cmd_word & ~PCI_COMMAND_INVALIDATE);
1891 #else
1892 pci_write_config_word(hw->pdev, PCI_COMMAND,
1893 hw->
1894 pci_cmd_word & ~PCI_COMMAND_INVALIDATE);
1895 #endif
1896 E1000_WRITE_REG(hw, RCTL, E1000_RCTL_RST);
1897 E1000_WRITE_FLUSH(hw);
1898 mdelay(5);
1899 }
1900
1901 /* Setup the receive address. This involves initializing all of the Receive
1902 * Address Registers (RARs 0 - 15).
1903 */
1904 e1000_init_rx_addrs(hw, enetaddr);
1905
1906 /* For 82542 (rev 2.0), take the receiver out of reset and enable MWI */
1907 if (hw->mac_type == e1000_82542_rev2_0) {
1908 E1000_WRITE_REG(hw, RCTL, 0);
1909 E1000_WRITE_FLUSH(hw);
1910 mdelay(1);
1911 #ifdef CONFIG_DM_ETH
1912 dm_pci_write_config16(hw->pdev, PCI_COMMAND, hw->pci_cmd_word);
1913 #else
1914 pci_write_config_word(hw->pdev, PCI_COMMAND, hw->pci_cmd_word);
1915 #endif
1916 }
1917
1918 /* Zero out the Multicast HASH table */
1919 DEBUGOUT("Zeroing the MTA\n");
1920 mta_size = E1000_MC_TBL_SIZE;
1921 if (hw->mac_type == e1000_ich8lan)
1922 mta_size = E1000_MC_TBL_SIZE_ICH8LAN;
1923 for (i = 0; i < mta_size; i++) {
1924 E1000_WRITE_REG_ARRAY(hw, MTA, i, 0);
1925 /* use write flush to prevent Memory Write Block (MWB) from
1926 * occuring when accessing our register space */
1927 E1000_WRITE_FLUSH(hw);
1928 }
1929
1930 switch (hw->mac_type) {
1931 case e1000_82545_rev_3:
1932 case e1000_82546_rev_3:
1933 case e1000_igb:
1934 break;
1935 default:
1936 /* Workaround for PCI-X problem when BIOS sets MMRBC incorrectly. */
1937 if (hw->bus_type == e1000_bus_type_pcix) {
1938 #ifdef CONFIG_DM_ETH
1939 dm_pci_read_config16(hw->pdev, PCIX_COMMAND_REGISTER,
1940 &pcix_cmd_word);
1941 dm_pci_read_config16(hw->pdev, PCIX_STATUS_REGISTER_HI,
1942 &pcix_stat_hi_word);
1943 #else
1944 pci_read_config_word(hw->pdev, PCIX_COMMAND_REGISTER,
1945 &pcix_cmd_word);
1946 pci_read_config_word(hw->pdev, PCIX_STATUS_REGISTER_HI,
1947 &pcix_stat_hi_word);
1948 #endif
1949 cmd_mmrbc =
1950 (pcix_cmd_word & PCIX_COMMAND_MMRBC_MASK) >>
1951 PCIX_COMMAND_MMRBC_SHIFT;
1952 stat_mmrbc =
1953 (pcix_stat_hi_word & PCIX_STATUS_HI_MMRBC_MASK) >>
1954 PCIX_STATUS_HI_MMRBC_SHIFT;
1955 if (stat_mmrbc == PCIX_STATUS_HI_MMRBC_4K)
1956 stat_mmrbc = PCIX_STATUS_HI_MMRBC_2K;
1957 if (cmd_mmrbc > stat_mmrbc) {
1958 pcix_cmd_word &= ~PCIX_COMMAND_MMRBC_MASK;
1959 pcix_cmd_word |= stat_mmrbc << PCIX_COMMAND_MMRBC_SHIFT;
1960 #ifdef CONFIG_DM_ETH
1961 dm_pci_write_config16(hw->pdev, PCIX_COMMAND_REGISTER,
1962 pcix_cmd_word);
1963 #else
1964 pci_write_config_word(hw->pdev, PCIX_COMMAND_REGISTER,
1965 pcix_cmd_word);
1966 #endif
1967 }
1968 }
1969 break;
1970 }
1971
1972 /* More time needed for PHY to initialize */
1973 if (hw->mac_type == e1000_ich8lan)
1974 mdelay(15);
1975 if (hw->mac_type == e1000_igb)
1976 mdelay(15);
1977
1978 /* Call a subroutine to configure the link and setup flow control. */
1979 ret_val = e1000_setup_link(hw);
1980
1981 /* Set the transmit descriptor write-back policy */
1982 if (hw->mac_type > e1000_82544) {
1983 ctrl = E1000_READ_REG(hw, TXDCTL);
1984 ctrl =
1985 (ctrl & ~E1000_TXDCTL_WTHRESH) |
1986 E1000_TXDCTL_FULL_TX_DESC_WB;
1987 E1000_WRITE_REG(hw, TXDCTL, ctrl);
1988 }
1989
1990 /* Set the receive descriptor write back policy */
1991 if (hw->mac_type >= e1000_82571) {
1992 ctrl = E1000_READ_REG(hw, RXDCTL);
1993 ctrl =
1994 (ctrl & ~E1000_RXDCTL_WTHRESH) |
1995 E1000_RXDCTL_FULL_RX_DESC_WB;
1996 E1000_WRITE_REG(hw, RXDCTL, ctrl);
1997 }
1998
1999 switch (hw->mac_type) {
2000 default:
2001 break;
2002 case e1000_80003es2lan:
2003 /* Enable retransmit on late collisions */
2004 reg_data = E1000_READ_REG(hw, TCTL);
2005 reg_data |= E1000_TCTL_RTLC;
2006 E1000_WRITE_REG(hw, TCTL, reg_data);
2007
2008 /* Configure Gigabit Carry Extend Padding */
2009 reg_data = E1000_READ_REG(hw, TCTL_EXT);
2010 reg_data &= ~E1000_TCTL_EXT_GCEX_MASK;
2011 reg_data |= DEFAULT_80003ES2LAN_TCTL_EXT_GCEX;
2012 E1000_WRITE_REG(hw, TCTL_EXT, reg_data);
2013
2014 /* Configure Transmit Inter-Packet Gap */
2015 reg_data = E1000_READ_REG(hw, TIPG);
2016 reg_data &= ~E1000_TIPG_IPGT_MASK;
2017 reg_data |= DEFAULT_80003ES2LAN_TIPG_IPGT_1000;
2018 E1000_WRITE_REG(hw, TIPG, reg_data);
2019
2020 reg_data = E1000_READ_REG_ARRAY(hw, FFLT, 0x0001);
2021 reg_data &= ~0x00100000;
2022 E1000_WRITE_REG_ARRAY(hw, FFLT, 0x0001, reg_data);
2023 /* Fall through */
2024 case e1000_82571:
2025 case e1000_82572:
2026 case e1000_ich8lan:
2027 ctrl = E1000_READ_REG(hw, TXDCTL1);
2028 ctrl = (ctrl & ~E1000_TXDCTL_WTHRESH)
2029 | E1000_TXDCTL_FULL_TX_DESC_WB;
2030 E1000_WRITE_REG(hw, TXDCTL1, ctrl);
2031 break;
2032 case e1000_82573:
2033 case e1000_82574:
2034 reg_data = E1000_READ_REG(hw, GCR);
2035 reg_data |= E1000_GCR_L1_ACT_WITHOUT_L0S_RX;
2036 E1000_WRITE_REG(hw, GCR, reg_data);
2037 case e1000_igb:
2038 break;
2039 }
2040
2041 if (hw->device_id == E1000_DEV_ID_82546GB_QUAD_COPPER ||
2042 hw->device_id == E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3) {
2043 ctrl_ext = E1000_READ_REG(hw, CTRL_EXT);
2044 /* Relaxed ordering must be disabled to avoid a parity
2045 * error crash in a PCI slot. */
2046 ctrl_ext |= E1000_CTRL_EXT_RO_DIS;
2047 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
2048 }
2049
2050 return ret_val;
2051 }
2052
2053 /******************************************************************************
2054 * Configures flow control and link settings.
2055 *
2056 * hw - Struct containing variables accessed by shared code
2057 *
2058 * Determines which flow control settings to use. Calls the apropriate media-
2059 * specific link configuration function. Configures the flow control settings.
2060 * Assuming the adapter has a valid link partner, a valid link should be
2061 * established. Assumes the hardware has previously been reset and the
2062 * transmitter and receiver are not enabled.
2063 *****************************************************************************/
2064 static int
e1000_setup_link(struct e1000_hw * hw)2065 e1000_setup_link(struct e1000_hw *hw)
2066 {
2067 int32_t ret_val;
2068 #ifndef CONFIG_E1000_NO_NVM
2069 uint32_t ctrl_ext;
2070 uint16_t eeprom_data;
2071 #endif
2072
2073 DEBUGFUNC();
2074
2075 /* In the case of the phy reset being blocked, we already have a link.
2076 * We do not have to set it up again. */
2077 if (e1000_check_phy_reset_block(hw))
2078 return E1000_SUCCESS;
2079
2080 #ifndef CONFIG_E1000_NO_NVM
2081 /* Read and store word 0x0F of the EEPROM. This word contains bits
2082 * that determine the hardware's default PAUSE (flow control) mode,
2083 * a bit that determines whether the HW defaults to enabling or
2084 * disabling auto-negotiation, and the direction of the
2085 * SW defined pins. If there is no SW over-ride of the flow
2086 * control setting, then the variable hw->fc will
2087 * be initialized based on a value in the EEPROM.
2088 */
2089 if (e1000_read_eeprom(hw, EEPROM_INIT_CONTROL2_REG, 1,
2090 &eeprom_data) < 0) {
2091 DEBUGOUT("EEPROM Read Error\n");
2092 return -E1000_ERR_EEPROM;
2093 }
2094 #endif
2095 if (hw->fc == e1000_fc_default) {
2096 switch (hw->mac_type) {
2097 case e1000_ich8lan:
2098 case e1000_82573:
2099 case e1000_82574:
2100 case e1000_igb:
2101 hw->fc = e1000_fc_full;
2102 break;
2103 default:
2104 #ifndef CONFIG_E1000_NO_NVM
2105 ret_val = e1000_read_eeprom(hw,
2106 EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data);
2107 if (ret_val) {
2108 DEBUGOUT("EEPROM Read Error\n");
2109 return -E1000_ERR_EEPROM;
2110 }
2111 if ((eeprom_data & EEPROM_WORD0F_PAUSE_MASK) == 0)
2112 hw->fc = e1000_fc_none;
2113 else if ((eeprom_data & EEPROM_WORD0F_PAUSE_MASK) ==
2114 EEPROM_WORD0F_ASM_DIR)
2115 hw->fc = e1000_fc_tx_pause;
2116 else
2117 #endif
2118 hw->fc = e1000_fc_full;
2119 break;
2120 }
2121 }
2122
2123 /* We want to save off the original Flow Control configuration just
2124 * in case we get disconnected and then reconnected into a different
2125 * hub or switch with different Flow Control capabilities.
2126 */
2127 if (hw->mac_type == e1000_82542_rev2_0)
2128 hw->fc &= (~e1000_fc_tx_pause);
2129
2130 if ((hw->mac_type < e1000_82543) && (hw->report_tx_early == 1))
2131 hw->fc &= (~e1000_fc_rx_pause);
2132
2133 hw->original_fc = hw->fc;
2134
2135 DEBUGOUT("After fix-ups FlowControl is now = %x\n", hw->fc);
2136
2137 #ifndef CONFIG_E1000_NO_NVM
2138 /* Take the 4 bits from EEPROM word 0x0F that determine the initial
2139 * polarity value for the SW controlled pins, and setup the
2140 * Extended Device Control reg with that info.
2141 * This is needed because one of the SW controlled pins is used for
2142 * signal detection. So this should be done before e1000_setup_pcs_link()
2143 * or e1000_phy_setup() is called.
2144 */
2145 if (hw->mac_type == e1000_82543) {
2146 ctrl_ext = ((eeprom_data & EEPROM_WORD0F_SWPDIO_EXT) <<
2147 SWDPIO__EXT_SHIFT);
2148 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
2149 }
2150 #endif
2151
2152 /* Call the necessary subroutine to configure the link. */
2153 ret_val = (hw->media_type == e1000_media_type_fiber) ?
2154 e1000_setup_fiber_link(hw) : e1000_setup_copper_link(hw);
2155 if (ret_val < 0) {
2156 return ret_val;
2157 }
2158
2159 /* Initialize the flow control address, type, and PAUSE timer
2160 * registers to their default values. This is done even if flow
2161 * control is disabled, because it does not hurt anything to
2162 * initialize these registers.
2163 */
2164 DEBUGOUT("Initializing the Flow Control address, type"
2165 "and timer regs\n");
2166
2167 /* FCAL/H and FCT are hardcoded to standard values in e1000_ich8lan. */
2168 if (hw->mac_type != e1000_ich8lan) {
2169 E1000_WRITE_REG(hw, FCT, FLOW_CONTROL_TYPE);
2170 E1000_WRITE_REG(hw, FCAH, FLOW_CONTROL_ADDRESS_HIGH);
2171 E1000_WRITE_REG(hw, FCAL, FLOW_CONTROL_ADDRESS_LOW);
2172 }
2173
2174 E1000_WRITE_REG(hw, FCTTV, hw->fc_pause_time);
2175
2176 /* Set the flow control receive threshold registers. Normally,
2177 * these registers will be set to a default threshold that may be
2178 * adjusted later by the driver's runtime code. However, if the
2179 * ability to transmit pause frames in not enabled, then these
2180 * registers will be set to 0.
2181 */
2182 if (!(hw->fc & e1000_fc_tx_pause)) {
2183 E1000_WRITE_REG(hw, FCRTL, 0);
2184 E1000_WRITE_REG(hw, FCRTH, 0);
2185 } else {
2186 /* We need to set up the Receive Threshold high and low water marks
2187 * as well as (optionally) enabling the transmission of XON frames.
2188 */
2189 if (hw->fc_send_xon) {
2190 E1000_WRITE_REG(hw, FCRTL,
2191 (hw->fc_low_water | E1000_FCRTL_XONE));
2192 E1000_WRITE_REG(hw, FCRTH, hw->fc_high_water);
2193 } else {
2194 E1000_WRITE_REG(hw, FCRTL, hw->fc_low_water);
2195 E1000_WRITE_REG(hw, FCRTH, hw->fc_high_water);
2196 }
2197 }
2198 return ret_val;
2199 }
2200
2201 /******************************************************************************
2202 * Sets up link for a fiber based adapter
2203 *
2204 * hw - Struct containing variables accessed by shared code
2205 *
2206 * Manipulates Physical Coding Sublayer functions in order to configure
2207 * link. Assumes the hardware has been previously reset and the transmitter
2208 * and receiver are not enabled.
2209 *****************************************************************************/
2210 static int
e1000_setup_fiber_link(struct e1000_hw * hw)2211 e1000_setup_fiber_link(struct e1000_hw *hw)
2212 {
2213 uint32_t ctrl;
2214 uint32_t status;
2215 uint32_t txcw = 0;
2216 uint32_t i;
2217 uint32_t signal;
2218 int32_t ret_val;
2219
2220 DEBUGFUNC();
2221 /* On adapters with a MAC newer that 82544, SW Defineable pin 1 will be
2222 * set when the optics detect a signal. On older adapters, it will be
2223 * cleared when there is a signal
2224 */
2225 ctrl = E1000_READ_REG(hw, CTRL);
2226 if ((hw->mac_type > e1000_82544) && !(ctrl & E1000_CTRL_ILOS))
2227 signal = E1000_CTRL_SWDPIN1;
2228 else
2229 signal = 0;
2230
2231 printf("signal for %s is %x (ctrl %08x)!!!!\n", hw->name, signal,
2232 ctrl);
2233 /* Take the link out of reset */
2234 ctrl &= ~(E1000_CTRL_LRST);
2235
2236 e1000_config_collision_dist(hw);
2237
2238 /* Check for a software override of the flow control settings, and setup
2239 * the device accordingly. If auto-negotiation is enabled, then software
2240 * will have to set the "PAUSE" bits to the correct value in the Tranmsit
2241 * Config Word Register (TXCW) and re-start auto-negotiation. However, if
2242 * auto-negotiation is disabled, then software will have to manually
2243 * configure the two flow control enable bits in the CTRL register.
2244 *
2245 * The possible values of the "fc" parameter are:
2246 * 0: Flow control is completely disabled
2247 * 1: Rx flow control is enabled (we can receive pause frames, but
2248 * not send pause frames).
2249 * 2: Tx flow control is enabled (we can send pause frames but we do
2250 * not support receiving pause frames).
2251 * 3: Both Rx and TX flow control (symmetric) are enabled.
2252 */
2253 switch (hw->fc) {
2254 case e1000_fc_none:
2255 /* Flow control is completely disabled by a software over-ride. */
2256 txcw = (E1000_TXCW_ANE | E1000_TXCW_FD);
2257 break;
2258 case e1000_fc_rx_pause:
2259 /* RX Flow control is enabled and TX Flow control is disabled by a
2260 * software over-ride. Since there really isn't a way to advertise
2261 * that we are capable of RX Pause ONLY, we will advertise that we
2262 * support both symmetric and asymmetric RX PAUSE. Later, we will
2263 * disable the adapter's ability to send PAUSE frames.
2264 */
2265 txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_PAUSE_MASK);
2266 break;
2267 case e1000_fc_tx_pause:
2268 /* TX Flow control is enabled, and RX Flow control is disabled, by a
2269 * software over-ride.
2270 */
2271 txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_ASM_DIR);
2272 break;
2273 case e1000_fc_full:
2274 /* Flow control (both RX and TX) is enabled by a software over-ride. */
2275 txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_PAUSE_MASK);
2276 break;
2277 default:
2278 DEBUGOUT("Flow control param set incorrectly\n");
2279 return -E1000_ERR_CONFIG;
2280 break;
2281 }
2282
2283 /* Since auto-negotiation is enabled, take the link out of reset (the link
2284 * will be in reset, because we previously reset the chip). This will
2285 * restart auto-negotiation. If auto-neogtiation is successful then the
2286 * link-up status bit will be set and the flow control enable bits (RFCE
2287 * and TFCE) will be set according to their negotiated value.
2288 */
2289 DEBUGOUT("Auto-negotiation enabled (%#x)\n", txcw);
2290
2291 E1000_WRITE_REG(hw, TXCW, txcw);
2292 E1000_WRITE_REG(hw, CTRL, ctrl);
2293 E1000_WRITE_FLUSH(hw);
2294
2295 hw->txcw = txcw;
2296 mdelay(1);
2297
2298 /* If we have a signal (the cable is plugged in) then poll for a "Link-Up"
2299 * indication in the Device Status Register. Time-out if a link isn't
2300 * seen in 500 milliseconds seconds (Auto-negotiation should complete in
2301 * less than 500 milliseconds even if the other end is doing it in SW).
2302 */
2303 if ((E1000_READ_REG(hw, CTRL) & E1000_CTRL_SWDPIN1) == signal) {
2304 DEBUGOUT("Looking for Link\n");
2305 for (i = 0; i < (LINK_UP_TIMEOUT / 10); i++) {
2306 mdelay(10);
2307 status = E1000_READ_REG(hw, STATUS);
2308 if (status & E1000_STATUS_LU)
2309 break;
2310 }
2311 if (i == (LINK_UP_TIMEOUT / 10)) {
2312 /* AutoNeg failed to achieve a link, so we'll call
2313 * e1000_check_for_link. This routine will force the link up if we
2314 * detect a signal. This will allow us to communicate with
2315 * non-autonegotiating link partners.
2316 */
2317 DEBUGOUT("Never got a valid link from auto-neg!!!\n");
2318 hw->autoneg_failed = 1;
2319 ret_val = e1000_check_for_link(hw);
2320 if (ret_val < 0) {
2321 DEBUGOUT("Error while checking for link\n");
2322 return ret_val;
2323 }
2324 hw->autoneg_failed = 0;
2325 } else {
2326 hw->autoneg_failed = 0;
2327 DEBUGOUT("Valid Link Found\n");
2328 }
2329 } else {
2330 DEBUGOUT("No Signal Detected\n");
2331 return -E1000_ERR_NOLINK;
2332 }
2333 return 0;
2334 }
2335
2336 /******************************************************************************
2337 * Make sure we have a valid PHY and change PHY mode before link setup.
2338 *
2339 * hw - Struct containing variables accessed by shared code
2340 ******************************************************************************/
2341 static int32_t
e1000_copper_link_preconfig(struct e1000_hw * hw)2342 e1000_copper_link_preconfig(struct e1000_hw *hw)
2343 {
2344 uint32_t ctrl;
2345 int32_t ret_val;
2346 uint16_t phy_data;
2347
2348 DEBUGFUNC();
2349
2350 ctrl = E1000_READ_REG(hw, CTRL);
2351 /* With 82543, we need to force speed and duplex on the MAC equal to what
2352 * the PHY speed and duplex configuration is. In addition, we need to
2353 * perform a hardware reset on the PHY to take it out of reset.
2354 */
2355 if (hw->mac_type > e1000_82543) {
2356 ctrl |= E1000_CTRL_SLU;
2357 ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
2358 E1000_WRITE_REG(hw, CTRL, ctrl);
2359 } else {
2360 ctrl |= (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX
2361 | E1000_CTRL_SLU);
2362 E1000_WRITE_REG(hw, CTRL, ctrl);
2363 ret_val = e1000_phy_hw_reset(hw);
2364 if (ret_val)
2365 return ret_val;
2366 }
2367
2368 /* Make sure we have a valid PHY */
2369 ret_val = e1000_detect_gig_phy(hw);
2370 if (ret_val) {
2371 DEBUGOUT("Error, did not detect valid phy.\n");
2372 return ret_val;
2373 }
2374 DEBUGOUT("Phy ID = %x\n", hw->phy_id);
2375
2376 /* Set PHY to class A mode (if necessary) */
2377 ret_val = e1000_set_phy_mode(hw);
2378 if (ret_val)
2379 return ret_val;
2380 if ((hw->mac_type == e1000_82545_rev_3) ||
2381 (hw->mac_type == e1000_82546_rev_3)) {
2382 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL,
2383 &phy_data);
2384 phy_data |= 0x00000008;
2385 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL,
2386 phy_data);
2387 }
2388
2389 if (hw->mac_type <= e1000_82543 ||
2390 hw->mac_type == e1000_82541 || hw->mac_type == e1000_82547 ||
2391 hw->mac_type == e1000_82541_rev_2
2392 || hw->mac_type == e1000_82547_rev_2)
2393 hw->phy_reset_disable = false;
2394
2395 return E1000_SUCCESS;
2396 }
2397
2398 /*****************************************************************************
2399 *
2400 * This function sets the lplu state according to the active flag. When
2401 * activating lplu this function also disables smart speed and vise versa.
2402 * lplu will not be activated unless the device autonegotiation advertisment
2403 * meets standards of either 10 or 10/100 or 10/100/1000 at all duplexes.
2404 * hw: Struct containing variables accessed by shared code
2405 * active - true to enable lplu false to disable lplu.
2406 *
2407 * returns: - E1000_ERR_PHY if fail to read/write the PHY
2408 * E1000_SUCCESS at any other case.
2409 *
2410 ****************************************************************************/
2411
2412 static int32_t
e1000_set_d3_lplu_state(struct e1000_hw * hw,bool active)2413 e1000_set_d3_lplu_state(struct e1000_hw *hw, bool active)
2414 {
2415 uint32_t phy_ctrl = 0;
2416 int32_t ret_val;
2417 uint16_t phy_data;
2418 DEBUGFUNC();
2419
2420 if (hw->phy_type != e1000_phy_igp && hw->phy_type != e1000_phy_igp_2
2421 && hw->phy_type != e1000_phy_igp_3)
2422 return E1000_SUCCESS;
2423
2424 /* During driver activity LPLU should not be used or it will attain link
2425 * from the lowest speeds starting from 10Mbps. The capability is used
2426 * for Dx transitions and states */
2427 if (hw->mac_type == e1000_82541_rev_2
2428 || hw->mac_type == e1000_82547_rev_2) {
2429 ret_val = e1000_read_phy_reg(hw, IGP01E1000_GMII_FIFO,
2430 &phy_data);
2431 if (ret_val)
2432 return ret_val;
2433 } else if (hw->mac_type == e1000_ich8lan) {
2434 /* MAC writes into PHY register based on the state transition
2435 * and start auto-negotiation. SW driver can overwrite the
2436 * settings in CSR PHY power control E1000_PHY_CTRL register. */
2437 phy_ctrl = E1000_READ_REG(hw, PHY_CTRL);
2438 } else {
2439 ret_val = e1000_read_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT,
2440 &phy_data);
2441 if (ret_val)
2442 return ret_val;
2443 }
2444
2445 if (!active) {
2446 if (hw->mac_type == e1000_82541_rev_2 ||
2447 hw->mac_type == e1000_82547_rev_2) {
2448 phy_data &= ~IGP01E1000_GMII_FLEX_SPD;
2449 ret_val = e1000_write_phy_reg(hw, IGP01E1000_GMII_FIFO,
2450 phy_data);
2451 if (ret_val)
2452 return ret_val;
2453 } else {
2454 if (hw->mac_type == e1000_ich8lan) {
2455 phy_ctrl &= ~E1000_PHY_CTRL_NOND0A_LPLU;
2456 E1000_WRITE_REG(hw, PHY_CTRL, phy_ctrl);
2457 } else {
2458 phy_data &= ~IGP02E1000_PM_D3_LPLU;
2459 ret_val = e1000_write_phy_reg(hw,
2460 IGP02E1000_PHY_POWER_MGMT, phy_data);
2461 if (ret_val)
2462 return ret_val;
2463 }
2464 }
2465
2466 /* LPLU and SmartSpeed are mutually exclusive. LPLU is used during
2467 * Dx states where the power conservation is most important. During
2468 * driver activity we should enable SmartSpeed, so performance is
2469 * maintained. */
2470 if (hw->smart_speed == e1000_smart_speed_on) {
2471 ret_val = e1000_read_phy_reg(hw,
2472 IGP01E1000_PHY_PORT_CONFIG, &phy_data);
2473 if (ret_val)
2474 return ret_val;
2475
2476 phy_data |= IGP01E1000_PSCFR_SMART_SPEED;
2477 ret_val = e1000_write_phy_reg(hw,
2478 IGP01E1000_PHY_PORT_CONFIG, phy_data);
2479 if (ret_val)
2480 return ret_val;
2481 } else if (hw->smart_speed == e1000_smart_speed_off) {
2482 ret_val = e1000_read_phy_reg(hw,
2483 IGP01E1000_PHY_PORT_CONFIG, &phy_data);
2484 if (ret_val)
2485 return ret_val;
2486
2487 phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
2488 ret_val = e1000_write_phy_reg(hw,
2489 IGP01E1000_PHY_PORT_CONFIG, phy_data);
2490 if (ret_val)
2491 return ret_val;
2492 }
2493
2494 } else if ((hw->autoneg_advertised == AUTONEG_ADVERTISE_SPEED_DEFAULT)
2495 || (hw->autoneg_advertised == AUTONEG_ADVERTISE_10_ALL) ||
2496 (hw->autoneg_advertised == AUTONEG_ADVERTISE_10_100_ALL)) {
2497
2498 if (hw->mac_type == e1000_82541_rev_2 ||
2499 hw->mac_type == e1000_82547_rev_2) {
2500 phy_data |= IGP01E1000_GMII_FLEX_SPD;
2501 ret_val = e1000_write_phy_reg(hw,
2502 IGP01E1000_GMII_FIFO, phy_data);
2503 if (ret_val)
2504 return ret_val;
2505 } else {
2506 if (hw->mac_type == e1000_ich8lan) {
2507 phy_ctrl |= E1000_PHY_CTRL_NOND0A_LPLU;
2508 E1000_WRITE_REG(hw, PHY_CTRL, phy_ctrl);
2509 } else {
2510 phy_data |= IGP02E1000_PM_D3_LPLU;
2511 ret_val = e1000_write_phy_reg(hw,
2512 IGP02E1000_PHY_POWER_MGMT, phy_data);
2513 if (ret_val)
2514 return ret_val;
2515 }
2516 }
2517
2518 /* When LPLU is enabled we should disable SmartSpeed */
2519 ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
2520 &phy_data);
2521 if (ret_val)
2522 return ret_val;
2523
2524 phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
2525 ret_val = e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
2526 phy_data);
2527 if (ret_val)
2528 return ret_val;
2529 }
2530 return E1000_SUCCESS;
2531 }
2532
2533 /*****************************************************************************
2534 *
2535 * This function sets the lplu d0 state according to the active flag. When
2536 * activating lplu this function also disables smart speed and vise versa.
2537 * lplu will not be activated unless the device autonegotiation advertisment
2538 * meets standards of either 10 or 10/100 or 10/100/1000 at all duplexes.
2539 * hw: Struct containing variables accessed by shared code
2540 * active - true to enable lplu false to disable lplu.
2541 *
2542 * returns: - E1000_ERR_PHY if fail to read/write the PHY
2543 * E1000_SUCCESS at any other case.
2544 *
2545 ****************************************************************************/
2546
2547 static int32_t
e1000_set_d0_lplu_state(struct e1000_hw * hw,bool active)2548 e1000_set_d0_lplu_state(struct e1000_hw *hw, bool active)
2549 {
2550 uint32_t phy_ctrl = 0;
2551 int32_t ret_val;
2552 uint16_t phy_data;
2553 DEBUGFUNC();
2554
2555 if (hw->mac_type <= e1000_82547_rev_2)
2556 return E1000_SUCCESS;
2557
2558 if (hw->mac_type == e1000_ich8lan) {
2559 phy_ctrl = E1000_READ_REG(hw, PHY_CTRL);
2560 } else if (hw->mac_type == e1000_igb) {
2561 phy_ctrl = E1000_READ_REG(hw, I210_PHY_CTRL);
2562 } else {
2563 ret_val = e1000_read_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT,
2564 &phy_data);
2565 if (ret_val)
2566 return ret_val;
2567 }
2568
2569 if (!active) {
2570 if (hw->mac_type == e1000_ich8lan) {
2571 phy_ctrl &= ~E1000_PHY_CTRL_D0A_LPLU;
2572 E1000_WRITE_REG(hw, PHY_CTRL, phy_ctrl);
2573 } else if (hw->mac_type == e1000_igb) {
2574 phy_ctrl &= ~E1000_PHY_CTRL_D0A_LPLU;
2575 E1000_WRITE_REG(hw, I210_PHY_CTRL, phy_ctrl);
2576 } else {
2577 phy_data &= ~IGP02E1000_PM_D0_LPLU;
2578 ret_val = e1000_write_phy_reg(hw,
2579 IGP02E1000_PHY_POWER_MGMT, phy_data);
2580 if (ret_val)
2581 return ret_val;
2582 }
2583
2584 if (hw->mac_type == e1000_igb)
2585 return E1000_SUCCESS;
2586
2587 /* LPLU and SmartSpeed are mutually exclusive. LPLU is used during
2588 * Dx states where the power conservation is most important. During
2589 * driver activity we should enable SmartSpeed, so performance is
2590 * maintained. */
2591 if (hw->smart_speed == e1000_smart_speed_on) {
2592 ret_val = e1000_read_phy_reg(hw,
2593 IGP01E1000_PHY_PORT_CONFIG, &phy_data);
2594 if (ret_val)
2595 return ret_val;
2596
2597 phy_data |= IGP01E1000_PSCFR_SMART_SPEED;
2598 ret_val = e1000_write_phy_reg(hw,
2599 IGP01E1000_PHY_PORT_CONFIG, phy_data);
2600 if (ret_val)
2601 return ret_val;
2602 } else if (hw->smart_speed == e1000_smart_speed_off) {
2603 ret_val = e1000_read_phy_reg(hw,
2604 IGP01E1000_PHY_PORT_CONFIG, &phy_data);
2605 if (ret_val)
2606 return ret_val;
2607
2608 phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
2609 ret_val = e1000_write_phy_reg(hw,
2610 IGP01E1000_PHY_PORT_CONFIG, phy_data);
2611 if (ret_val)
2612 return ret_val;
2613 }
2614
2615
2616 } else {
2617
2618 if (hw->mac_type == e1000_ich8lan) {
2619 phy_ctrl |= E1000_PHY_CTRL_D0A_LPLU;
2620 E1000_WRITE_REG(hw, PHY_CTRL, phy_ctrl);
2621 } else if (hw->mac_type == e1000_igb) {
2622 phy_ctrl |= E1000_PHY_CTRL_D0A_LPLU;
2623 E1000_WRITE_REG(hw, I210_PHY_CTRL, phy_ctrl);
2624 } else {
2625 phy_data |= IGP02E1000_PM_D0_LPLU;
2626 ret_val = e1000_write_phy_reg(hw,
2627 IGP02E1000_PHY_POWER_MGMT, phy_data);
2628 if (ret_val)
2629 return ret_val;
2630 }
2631
2632 if (hw->mac_type == e1000_igb)
2633 return E1000_SUCCESS;
2634
2635 /* When LPLU is enabled we should disable SmartSpeed */
2636 ret_val = e1000_read_phy_reg(hw,
2637 IGP01E1000_PHY_PORT_CONFIG, &phy_data);
2638 if (ret_val)
2639 return ret_val;
2640
2641 phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
2642 ret_val = e1000_write_phy_reg(hw,
2643 IGP01E1000_PHY_PORT_CONFIG, phy_data);
2644 if (ret_val)
2645 return ret_val;
2646
2647 }
2648 return E1000_SUCCESS;
2649 }
2650
2651 /********************************************************************
2652 * Copper link setup for e1000_phy_igp series.
2653 *
2654 * hw - Struct containing variables accessed by shared code
2655 *********************************************************************/
2656 static int32_t
e1000_copper_link_igp_setup(struct e1000_hw * hw)2657 e1000_copper_link_igp_setup(struct e1000_hw *hw)
2658 {
2659 uint32_t led_ctrl;
2660 int32_t ret_val;
2661 uint16_t phy_data;
2662
2663 DEBUGFUNC();
2664
2665 if (hw->phy_reset_disable)
2666 return E1000_SUCCESS;
2667
2668 ret_val = e1000_phy_reset(hw);
2669 if (ret_val) {
2670 DEBUGOUT("Error Resetting the PHY\n");
2671 return ret_val;
2672 }
2673
2674 /* Wait 15ms for MAC to configure PHY from eeprom settings */
2675 mdelay(15);
2676 if (hw->mac_type != e1000_ich8lan) {
2677 /* Configure activity LED after PHY reset */
2678 led_ctrl = E1000_READ_REG(hw, LEDCTL);
2679 led_ctrl &= IGP_ACTIVITY_LED_MASK;
2680 led_ctrl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE);
2681 E1000_WRITE_REG(hw, LEDCTL, led_ctrl);
2682 }
2683
2684 /* The NVM settings will configure LPLU in D3 for IGP2 and IGP3 PHYs */
2685 if (hw->phy_type == e1000_phy_igp) {
2686 /* disable lplu d3 during driver init */
2687 ret_val = e1000_set_d3_lplu_state(hw, false);
2688 if (ret_val) {
2689 DEBUGOUT("Error Disabling LPLU D3\n");
2690 return ret_val;
2691 }
2692 }
2693
2694 /* disable lplu d0 during driver init */
2695 ret_val = e1000_set_d0_lplu_state(hw, false);
2696 if (ret_val) {
2697 DEBUGOUT("Error Disabling LPLU D0\n");
2698 return ret_val;
2699 }
2700 /* Configure mdi-mdix settings */
2701 ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, &phy_data);
2702 if (ret_val)
2703 return ret_val;
2704
2705 if ((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_82547)) {
2706 hw->dsp_config_state = e1000_dsp_config_disabled;
2707 /* Force MDI for earlier revs of the IGP PHY */
2708 phy_data &= ~(IGP01E1000_PSCR_AUTO_MDIX
2709 | IGP01E1000_PSCR_FORCE_MDI_MDIX);
2710 hw->mdix = 1;
2711
2712 } else {
2713 hw->dsp_config_state = e1000_dsp_config_enabled;
2714 phy_data &= ~IGP01E1000_PSCR_AUTO_MDIX;
2715
2716 switch (hw->mdix) {
2717 case 1:
2718 phy_data &= ~IGP01E1000_PSCR_FORCE_MDI_MDIX;
2719 break;
2720 case 2:
2721 phy_data |= IGP01E1000_PSCR_FORCE_MDI_MDIX;
2722 break;
2723 case 0:
2724 default:
2725 phy_data |= IGP01E1000_PSCR_AUTO_MDIX;
2726 break;
2727 }
2728 }
2729 ret_val = e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, phy_data);
2730 if (ret_val)
2731 return ret_val;
2732
2733 /* set auto-master slave resolution settings */
2734 if (hw->autoneg) {
2735 e1000_ms_type phy_ms_setting = hw->master_slave;
2736
2737 if (hw->ffe_config_state == e1000_ffe_config_active)
2738 hw->ffe_config_state = e1000_ffe_config_enabled;
2739
2740 if (hw->dsp_config_state == e1000_dsp_config_activated)
2741 hw->dsp_config_state = e1000_dsp_config_enabled;
2742
2743 /* when autonegotiation advertisment is only 1000Mbps then we
2744 * should disable SmartSpeed and enable Auto MasterSlave
2745 * resolution as hardware default. */
2746 if (hw->autoneg_advertised == ADVERTISE_1000_FULL) {
2747 /* Disable SmartSpeed */
2748 ret_val = e1000_read_phy_reg(hw,
2749 IGP01E1000_PHY_PORT_CONFIG, &phy_data);
2750 if (ret_val)
2751 return ret_val;
2752 phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
2753 ret_val = e1000_write_phy_reg(hw,
2754 IGP01E1000_PHY_PORT_CONFIG, phy_data);
2755 if (ret_val)
2756 return ret_val;
2757 /* Set auto Master/Slave resolution process */
2758 ret_val = e1000_read_phy_reg(hw, PHY_1000T_CTRL,
2759 &phy_data);
2760 if (ret_val)
2761 return ret_val;
2762 phy_data &= ~CR_1000T_MS_ENABLE;
2763 ret_val = e1000_write_phy_reg(hw, PHY_1000T_CTRL,
2764 phy_data);
2765 if (ret_val)
2766 return ret_val;
2767 }
2768
2769 ret_val = e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_data);
2770 if (ret_val)
2771 return ret_val;
2772
2773 /* load defaults for future use */
2774 hw->original_master_slave = (phy_data & CR_1000T_MS_ENABLE) ?
2775 ((phy_data & CR_1000T_MS_VALUE) ?
2776 e1000_ms_force_master :
2777 e1000_ms_force_slave) :
2778 e1000_ms_auto;
2779
2780 switch (phy_ms_setting) {
2781 case e1000_ms_force_master:
2782 phy_data |= (CR_1000T_MS_ENABLE | CR_1000T_MS_VALUE);
2783 break;
2784 case e1000_ms_force_slave:
2785 phy_data |= CR_1000T_MS_ENABLE;
2786 phy_data &= ~(CR_1000T_MS_VALUE);
2787 break;
2788 case e1000_ms_auto:
2789 phy_data &= ~CR_1000T_MS_ENABLE;
2790 default:
2791 break;
2792 }
2793 ret_val = e1000_write_phy_reg(hw, PHY_1000T_CTRL, phy_data);
2794 if (ret_val)
2795 return ret_val;
2796 }
2797
2798 return E1000_SUCCESS;
2799 }
2800
2801 /*****************************************************************************
2802 * This function checks the mode of the firmware.
2803 *
2804 * returns - true when the mode is IAMT or false.
2805 ****************************************************************************/
2806 bool
e1000_check_mng_mode(struct e1000_hw * hw)2807 e1000_check_mng_mode(struct e1000_hw *hw)
2808 {
2809 uint32_t fwsm;
2810 DEBUGFUNC();
2811
2812 fwsm = E1000_READ_REG(hw, FWSM);
2813
2814 if (hw->mac_type == e1000_ich8lan) {
2815 if ((fwsm & E1000_FWSM_MODE_MASK) ==
2816 (E1000_MNG_ICH_IAMT_MODE << E1000_FWSM_MODE_SHIFT))
2817 return true;
2818 } else if ((fwsm & E1000_FWSM_MODE_MASK) ==
2819 (E1000_MNG_IAMT_MODE << E1000_FWSM_MODE_SHIFT))
2820 return true;
2821
2822 return false;
2823 }
2824
2825 static int32_t
e1000_write_kmrn_reg(struct e1000_hw * hw,uint32_t reg_addr,uint16_t data)2826 e1000_write_kmrn_reg(struct e1000_hw *hw, uint32_t reg_addr, uint16_t data)
2827 {
2828 uint16_t swfw = E1000_SWFW_PHY0_SM;
2829 uint32_t reg_val;
2830 DEBUGFUNC();
2831
2832 if (e1000_is_second_port(hw))
2833 swfw = E1000_SWFW_PHY1_SM;
2834
2835 if (e1000_swfw_sync_acquire(hw, swfw))
2836 return -E1000_ERR_SWFW_SYNC;
2837
2838 reg_val = ((reg_addr << E1000_KUMCTRLSTA_OFFSET_SHIFT)
2839 & E1000_KUMCTRLSTA_OFFSET) | data;
2840 E1000_WRITE_REG(hw, KUMCTRLSTA, reg_val);
2841 udelay(2);
2842
2843 return E1000_SUCCESS;
2844 }
2845
2846 static int32_t
e1000_read_kmrn_reg(struct e1000_hw * hw,uint32_t reg_addr,uint16_t * data)2847 e1000_read_kmrn_reg(struct e1000_hw *hw, uint32_t reg_addr, uint16_t *data)
2848 {
2849 uint16_t swfw = E1000_SWFW_PHY0_SM;
2850 uint32_t reg_val;
2851 DEBUGFUNC();
2852
2853 if (e1000_is_second_port(hw))
2854 swfw = E1000_SWFW_PHY1_SM;
2855
2856 if (e1000_swfw_sync_acquire(hw, swfw)) {
2857 debug("%s[%i]\n", __func__, __LINE__);
2858 return -E1000_ERR_SWFW_SYNC;
2859 }
2860
2861 /* Write register address */
2862 reg_val = ((reg_addr << E1000_KUMCTRLSTA_OFFSET_SHIFT) &
2863 E1000_KUMCTRLSTA_OFFSET) | E1000_KUMCTRLSTA_REN;
2864 E1000_WRITE_REG(hw, KUMCTRLSTA, reg_val);
2865 udelay(2);
2866
2867 /* Read the data returned */
2868 reg_val = E1000_READ_REG(hw, KUMCTRLSTA);
2869 *data = (uint16_t)reg_val;
2870
2871 return E1000_SUCCESS;
2872 }
2873
2874 /********************************************************************
2875 * Copper link setup for e1000_phy_gg82563 series.
2876 *
2877 * hw - Struct containing variables accessed by shared code
2878 *********************************************************************/
2879 static int32_t
e1000_copper_link_ggp_setup(struct e1000_hw * hw)2880 e1000_copper_link_ggp_setup(struct e1000_hw *hw)
2881 {
2882 int32_t ret_val;
2883 uint16_t phy_data;
2884 uint32_t reg_data;
2885
2886 DEBUGFUNC();
2887
2888 if (!hw->phy_reset_disable) {
2889 /* Enable CRS on TX for half-duplex operation. */
2890 ret_val = e1000_read_phy_reg(hw,
2891 GG82563_PHY_MAC_SPEC_CTRL, &phy_data);
2892 if (ret_val)
2893 return ret_val;
2894
2895 phy_data |= GG82563_MSCR_ASSERT_CRS_ON_TX;
2896 /* Use 25MHz for both link down and 1000BASE-T for Tx clock */
2897 phy_data |= GG82563_MSCR_TX_CLK_1000MBPS_25MHZ;
2898
2899 ret_val = e1000_write_phy_reg(hw,
2900 GG82563_PHY_MAC_SPEC_CTRL, phy_data);
2901 if (ret_val)
2902 return ret_val;
2903
2904 /* Options:
2905 * MDI/MDI-X = 0 (default)
2906 * 0 - Auto for all speeds
2907 * 1 - MDI mode
2908 * 2 - MDI-X mode
2909 * 3 - Auto for 1000Base-T only (MDI-X for 10/100Base-T modes)
2910 */
2911 ret_val = e1000_read_phy_reg(hw,
2912 GG82563_PHY_SPEC_CTRL, &phy_data);
2913 if (ret_val)
2914 return ret_val;
2915
2916 phy_data &= ~GG82563_PSCR_CROSSOVER_MODE_MASK;
2917
2918 switch (hw->mdix) {
2919 case 1:
2920 phy_data |= GG82563_PSCR_CROSSOVER_MODE_MDI;
2921 break;
2922 case 2:
2923 phy_data |= GG82563_PSCR_CROSSOVER_MODE_MDIX;
2924 break;
2925 case 0:
2926 default:
2927 phy_data |= GG82563_PSCR_CROSSOVER_MODE_AUTO;
2928 break;
2929 }
2930
2931 /* Options:
2932 * disable_polarity_correction = 0 (default)
2933 * Automatic Correction for Reversed Cable Polarity
2934 * 0 - Disabled
2935 * 1 - Enabled
2936 */
2937 phy_data &= ~GG82563_PSCR_POLARITY_REVERSAL_DISABLE;
2938 ret_val = e1000_write_phy_reg(hw,
2939 GG82563_PHY_SPEC_CTRL, phy_data);
2940
2941 if (ret_val)
2942 return ret_val;
2943
2944 /* SW Reset the PHY so all changes take effect */
2945 ret_val = e1000_phy_reset(hw);
2946 if (ret_val) {
2947 DEBUGOUT("Error Resetting the PHY\n");
2948 return ret_val;
2949 }
2950 } /* phy_reset_disable */
2951
2952 if (hw->mac_type == e1000_80003es2lan) {
2953 /* Bypass RX and TX FIFO's */
2954 ret_val = e1000_write_kmrn_reg(hw,
2955 E1000_KUMCTRLSTA_OFFSET_FIFO_CTRL,
2956 E1000_KUMCTRLSTA_FIFO_CTRL_RX_BYPASS
2957 | E1000_KUMCTRLSTA_FIFO_CTRL_TX_BYPASS);
2958 if (ret_val)
2959 return ret_val;
2960
2961 ret_val = e1000_read_phy_reg(hw,
2962 GG82563_PHY_SPEC_CTRL_2, &phy_data);
2963 if (ret_val)
2964 return ret_val;
2965
2966 phy_data &= ~GG82563_PSCR2_REVERSE_AUTO_NEG;
2967 ret_val = e1000_write_phy_reg(hw,
2968 GG82563_PHY_SPEC_CTRL_2, phy_data);
2969
2970 if (ret_val)
2971 return ret_val;
2972
2973 reg_data = E1000_READ_REG(hw, CTRL_EXT);
2974 reg_data &= ~(E1000_CTRL_EXT_LINK_MODE_MASK);
2975 E1000_WRITE_REG(hw, CTRL_EXT, reg_data);
2976
2977 ret_val = e1000_read_phy_reg(hw,
2978 GG82563_PHY_PWR_MGMT_CTRL, &phy_data);
2979 if (ret_val)
2980 return ret_val;
2981
2982 /* Do not init these registers when the HW is in IAMT mode, since the
2983 * firmware will have already initialized them. We only initialize
2984 * them if the HW is not in IAMT mode.
2985 */
2986 if (e1000_check_mng_mode(hw) == false) {
2987 /* Enable Electrical Idle on the PHY */
2988 phy_data |= GG82563_PMCR_ENABLE_ELECTRICAL_IDLE;
2989 ret_val = e1000_write_phy_reg(hw,
2990 GG82563_PHY_PWR_MGMT_CTRL, phy_data);
2991 if (ret_val)
2992 return ret_val;
2993
2994 ret_val = e1000_read_phy_reg(hw,
2995 GG82563_PHY_KMRN_MODE_CTRL, &phy_data);
2996 if (ret_val)
2997 return ret_val;
2998
2999 phy_data &= ~GG82563_KMCR_PASS_FALSE_CARRIER;
3000 ret_val = e1000_write_phy_reg(hw,
3001 GG82563_PHY_KMRN_MODE_CTRL, phy_data);
3002
3003 if (ret_val)
3004 return ret_val;
3005 }
3006
3007 /* Workaround: Disable padding in Kumeran interface in the MAC
3008 * and in the PHY to avoid CRC errors.
3009 */
3010 ret_val = e1000_read_phy_reg(hw,
3011 GG82563_PHY_INBAND_CTRL, &phy_data);
3012 if (ret_val)
3013 return ret_val;
3014 phy_data |= GG82563_ICR_DIS_PADDING;
3015 ret_val = e1000_write_phy_reg(hw,
3016 GG82563_PHY_INBAND_CTRL, phy_data);
3017 if (ret_val)
3018 return ret_val;
3019 }
3020 return E1000_SUCCESS;
3021 }
3022
3023 /********************************************************************
3024 * Copper link setup for e1000_phy_m88 series.
3025 *
3026 * hw - Struct containing variables accessed by shared code
3027 *********************************************************************/
3028 static int32_t
e1000_copper_link_mgp_setup(struct e1000_hw * hw)3029 e1000_copper_link_mgp_setup(struct e1000_hw *hw)
3030 {
3031 int32_t ret_val;
3032 uint16_t phy_data;
3033
3034 DEBUGFUNC();
3035
3036 if (hw->phy_reset_disable)
3037 return E1000_SUCCESS;
3038
3039 /* Enable CRS on TX. This must be set for half-duplex operation. */
3040 ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data);
3041 if (ret_val)
3042 return ret_val;
3043
3044 phy_data |= M88E1000_PSCR_ASSERT_CRS_ON_TX;
3045
3046 /* Options:
3047 * MDI/MDI-X = 0 (default)
3048 * 0 - Auto for all speeds
3049 * 1 - MDI mode
3050 * 2 - MDI-X mode
3051 * 3 - Auto for 1000Base-T only (MDI-X for 10/100Base-T modes)
3052 */
3053 phy_data &= ~M88E1000_PSCR_AUTO_X_MODE;
3054
3055 switch (hw->mdix) {
3056 case 1:
3057 phy_data |= M88E1000_PSCR_MDI_MANUAL_MODE;
3058 break;
3059 case 2:
3060 phy_data |= M88E1000_PSCR_MDIX_MANUAL_MODE;
3061 break;
3062 case 3:
3063 phy_data |= M88E1000_PSCR_AUTO_X_1000T;
3064 break;
3065 case 0:
3066 default:
3067 phy_data |= M88E1000_PSCR_AUTO_X_MODE;
3068 break;
3069 }
3070
3071 /* Options:
3072 * disable_polarity_correction = 0 (default)
3073 * Automatic Correction for Reversed Cable Polarity
3074 * 0 - Disabled
3075 * 1 - Enabled
3076 */
3077 phy_data &= ~M88E1000_PSCR_POLARITY_REVERSAL;
3078 ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data);
3079 if (ret_val)
3080 return ret_val;
3081
3082 if (hw->phy_revision < M88E1011_I_REV_4) {
3083 /* Force TX_CLK in the Extended PHY Specific Control Register
3084 * to 25MHz clock.
3085 */
3086 ret_val = e1000_read_phy_reg(hw,
3087 M88E1000_EXT_PHY_SPEC_CTRL, &phy_data);
3088 if (ret_val)
3089 return ret_val;
3090
3091 phy_data |= M88E1000_EPSCR_TX_CLK_25;
3092
3093 if ((hw->phy_revision == E1000_REVISION_2) &&
3094 (hw->phy_id == M88E1111_I_PHY_ID)) {
3095 /* Vidalia Phy, set the downshift counter to 5x */
3096 phy_data &= ~(M88EC018_EPSCR_DOWNSHIFT_COUNTER_MASK);
3097 phy_data |= M88EC018_EPSCR_DOWNSHIFT_COUNTER_5X;
3098 ret_val = e1000_write_phy_reg(hw,
3099 M88E1000_EXT_PHY_SPEC_CTRL, phy_data);
3100 if (ret_val)
3101 return ret_val;
3102 } else {
3103 /* Configure Master and Slave downshift values */
3104 phy_data &= ~(M88E1000_EPSCR_MASTER_DOWNSHIFT_MASK
3105 | M88E1000_EPSCR_SLAVE_DOWNSHIFT_MASK);
3106 phy_data |= (M88E1000_EPSCR_MASTER_DOWNSHIFT_1X
3107 | M88E1000_EPSCR_SLAVE_DOWNSHIFT_1X);
3108 ret_val = e1000_write_phy_reg(hw,
3109 M88E1000_EXT_PHY_SPEC_CTRL, phy_data);
3110 if (ret_val)
3111 return ret_val;
3112 }
3113 }
3114
3115 /* SW Reset the PHY so all changes take effect */
3116 ret_val = e1000_phy_reset(hw);
3117 if (ret_val) {
3118 DEBUGOUT("Error Resetting the PHY\n");
3119 return ret_val;
3120 }
3121
3122 return E1000_SUCCESS;
3123 }
3124
3125 /********************************************************************
3126 * Setup auto-negotiation and flow control advertisements,
3127 * and then perform auto-negotiation.
3128 *
3129 * hw - Struct containing variables accessed by shared code
3130 *********************************************************************/
3131 static int32_t
e1000_copper_link_autoneg(struct e1000_hw * hw)3132 e1000_copper_link_autoneg(struct e1000_hw *hw)
3133 {
3134 int32_t ret_val;
3135 uint16_t phy_data;
3136
3137 DEBUGFUNC();
3138
3139 /* Perform some bounds checking on the hw->autoneg_advertised
3140 * parameter. If this variable is zero, then set it to the default.
3141 */
3142 hw->autoneg_advertised &= AUTONEG_ADVERTISE_SPEED_DEFAULT;
3143
3144 /* If autoneg_advertised is zero, we assume it was not defaulted
3145 * by the calling code so we set to advertise full capability.
3146 */
3147 if (hw->autoneg_advertised == 0)
3148 hw->autoneg_advertised = AUTONEG_ADVERTISE_SPEED_DEFAULT;
3149
3150 /* IFE phy only supports 10/100 */
3151 if (hw->phy_type == e1000_phy_ife)
3152 hw->autoneg_advertised &= AUTONEG_ADVERTISE_10_100_ALL;
3153
3154 DEBUGOUT("Reconfiguring auto-neg advertisement params\n");
3155 ret_val = e1000_phy_setup_autoneg(hw);
3156 if (ret_val) {
3157 DEBUGOUT("Error Setting up Auto-Negotiation\n");
3158 return ret_val;
3159 }
3160 DEBUGOUT("Restarting Auto-Neg\n");
3161
3162 /* Restart auto-negotiation by setting the Auto Neg Enable bit and
3163 * the Auto Neg Restart bit in the PHY control register.
3164 */
3165 ret_val = e1000_read_phy_reg(hw, PHY_CTRL, &phy_data);
3166 if (ret_val)
3167 return ret_val;
3168
3169 phy_data |= (MII_CR_AUTO_NEG_EN | MII_CR_RESTART_AUTO_NEG);
3170 ret_val = e1000_write_phy_reg(hw, PHY_CTRL, phy_data);
3171 if (ret_val)
3172 return ret_val;
3173
3174 /* Does the user want to wait for Auto-Neg to complete here, or
3175 * check at a later time (for example, callback routine).
3176 */
3177 /* If we do not wait for autonegtation to complete I
3178 * do not see a valid link status.
3179 * wait_autoneg_complete = 1 .
3180 */
3181 if (hw->wait_autoneg_complete) {
3182 ret_val = e1000_wait_autoneg(hw);
3183 if (ret_val) {
3184 DEBUGOUT("Error while waiting for autoneg"
3185 "to complete\n");
3186 return ret_val;
3187 }
3188 }
3189
3190 hw->get_link_status = true;
3191
3192 return E1000_SUCCESS;
3193 }
3194
3195 /******************************************************************************
3196 * Config the MAC and the PHY after link is up.
3197 * 1) Set up the MAC to the current PHY speed/duplex
3198 * if we are on 82543. If we
3199 * are on newer silicon, we only need to configure
3200 * collision distance in the Transmit Control Register.
3201 * 2) Set up flow control on the MAC to that established with
3202 * the link partner.
3203 * 3) Config DSP to improve Gigabit link quality for some PHY revisions.
3204 *
3205 * hw - Struct containing variables accessed by shared code
3206 ******************************************************************************/
3207 static int32_t
e1000_copper_link_postconfig(struct e1000_hw * hw)3208 e1000_copper_link_postconfig(struct e1000_hw *hw)
3209 {
3210 int32_t ret_val;
3211 DEBUGFUNC();
3212
3213 if (hw->mac_type >= e1000_82544) {
3214 e1000_config_collision_dist(hw);
3215 } else {
3216 ret_val = e1000_config_mac_to_phy(hw);
3217 if (ret_val) {
3218 DEBUGOUT("Error configuring MAC to PHY settings\n");
3219 return ret_val;
3220 }
3221 }
3222 ret_val = e1000_config_fc_after_link_up(hw);
3223 if (ret_val) {
3224 DEBUGOUT("Error Configuring Flow Control\n");
3225 return ret_val;
3226 }
3227 return E1000_SUCCESS;
3228 }
3229
3230 /******************************************************************************
3231 * Detects which PHY is present and setup the speed and duplex
3232 *
3233 * hw - Struct containing variables accessed by shared code
3234 ******************************************************************************/
3235 static int
e1000_setup_copper_link(struct e1000_hw * hw)3236 e1000_setup_copper_link(struct e1000_hw *hw)
3237 {
3238 int32_t ret_val;
3239 uint16_t i;
3240 uint16_t phy_data;
3241 uint16_t reg_data;
3242
3243 DEBUGFUNC();
3244
3245 switch (hw->mac_type) {
3246 case e1000_80003es2lan:
3247 case e1000_ich8lan:
3248 /* Set the mac to wait the maximum time between each
3249 * iteration and increase the max iterations when
3250 * polling the phy; this fixes erroneous timeouts at 10Mbps. */
3251 ret_val = e1000_write_kmrn_reg(hw,
3252 GG82563_REG(0x34, 4), 0xFFFF);
3253 if (ret_val)
3254 return ret_val;
3255 ret_val = e1000_read_kmrn_reg(hw,
3256 GG82563_REG(0x34, 9), ®_data);
3257 if (ret_val)
3258 return ret_val;
3259 reg_data |= 0x3F;
3260 ret_val = e1000_write_kmrn_reg(hw,
3261 GG82563_REG(0x34, 9), reg_data);
3262 if (ret_val)
3263 return ret_val;
3264 default:
3265 break;
3266 }
3267
3268 /* Check if it is a valid PHY and set PHY mode if necessary. */
3269 ret_val = e1000_copper_link_preconfig(hw);
3270 if (ret_val)
3271 return ret_val;
3272 switch (hw->mac_type) {
3273 case e1000_80003es2lan:
3274 /* Kumeran registers are written-only */
3275 reg_data =
3276 E1000_KUMCTRLSTA_INB_CTRL_LINK_STATUS_TX_TIMEOUT_DEFAULT;
3277 reg_data |= E1000_KUMCTRLSTA_INB_CTRL_DIS_PADDING;
3278 ret_val = e1000_write_kmrn_reg(hw,
3279 E1000_KUMCTRLSTA_OFFSET_INB_CTRL, reg_data);
3280 if (ret_val)
3281 return ret_val;
3282 break;
3283 default:
3284 break;
3285 }
3286
3287 if (hw->phy_type == e1000_phy_igp ||
3288 hw->phy_type == e1000_phy_igp_3 ||
3289 hw->phy_type == e1000_phy_igp_2) {
3290 ret_val = e1000_copper_link_igp_setup(hw);
3291 if (ret_val)
3292 return ret_val;
3293 } else if (hw->phy_type == e1000_phy_m88 ||
3294 hw->phy_type == e1000_phy_igb) {
3295 ret_val = e1000_copper_link_mgp_setup(hw);
3296 if (ret_val)
3297 return ret_val;
3298 } else if (hw->phy_type == e1000_phy_gg82563) {
3299 ret_val = e1000_copper_link_ggp_setup(hw);
3300 if (ret_val)
3301 return ret_val;
3302 }
3303
3304 /* always auto */
3305 /* Setup autoneg and flow control advertisement
3306 * and perform autonegotiation */
3307 ret_val = e1000_copper_link_autoneg(hw);
3308 if (ret_val)
3309 return ret_val;
3310
3311 /* Check link status. Wait up to 100 microseconds for link to become
3312 * valid.
3313 */
3314 for (i = 0; i < 10; i++) {
3315 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
3316 if (ret_val)
3317 return ret_val;
3318 ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data);
3319 if (ret_val)
3320 return ret_val;
3321
3322 if (phy_data & MII_SR_LINK_STATUS) {
3323 /* Config the MAC and PHY after link is up */
3324 ret_val = e1000_copper_link_postconfig(hw);
3325 if (ret_val)
3326 return ret_val;
3327
3328 DEBUGOUT("Valid link established!!!\n");
3329 return E1000_SUCCESS;
3330 }
3331 udelay(10);
3332 }
3333
3334 DEBUGOUT("Unable to establish link!!!\n");
3335 return E1000_SUCCESS;
3336 }
3337
3338 /******************************************************************************
3339 * Configures PHY autoneg and flow control advertisement settings
3340 *
3341 * hw - Struct containing variables accessed by shared code
3342 ******************************************************************************/
3343 int32_t
e1000_phy_setup_autoneg(struct e1000_hw * hw)3344 e1000_phy_setup_autoneg(struct e1000_hw *hw)
3345 {
3346 int32_t ret_val;
3347 uint16_t mii_autoneg_adv_reg;
3348 uint16_t mii_1000t_ctrl_reg;
3349
3350 DEBUGFUNC();
3351
3352 /* Read the MII Auto-Neg Advertisement Register (Address 4). */
3353 ret_val = e1000_read_phy_reg(hw, PHY_AUTONEG_ADV, &mii_autoneg_adv_reg);
3354 if (ret_val)
3355 return ret_val;
3356
3357 if (hw->phy_type != e1000_phy_ife) {
3358 /* Read the MII 1000Base-T Control Register (Address 9). */
3359 ret_val = e1000_read_phy_reg(hw, PHY_1000T_CTRL,
3360 &mii_1000t_ctrl_reg);
3361 if (ret_val)
3362 return ret_val;
3363 } else
3364 mii_1000t_ctrl_reg = 0;
3365
3366 /* Need to parse both autoneg_advertised and fc and set up
3367 * the appropriate PHY registers. First we will parse for
3368 * autoneg_advertised software override. Since we can advertise
3369 * a plethora of combinations, we need to check each bit
3370 * individually.
3371 */
3372
3373 /* First we clear all the 10/100 mb speed bits in the Auto-Neg
3374 * Advertisement Register (Address 4) and the 1000 mb speed bits in
3375 * the 1000Base-T Control Register (Address 9).
3376 */
3377 mii_autoneg_adv_reg &= ~REG4_SPEED_MASK;
3378 mii_1000t_ctrl_reg &= ~REG9_SPEED_MASK;
3379
3380 DEBUGOUT("autoneg_advertised %x\n", hw->autoneg_advertised);
3381
3382 /* Do we want to advertise 10 Mb Half Duplex? */
3383 if (hw->autoneg_advertised & ADVERTISE_10_HALF) {
3384 DEBUGOUT("Advertise 10mb Half duplex\n");
3385 mii_autoneg_adv_reg |= NWAY_AR_10T_HD_CAPS;
3386 }
3387
3388 /* Do we want to advertise 10 Mb Full Duplex? */
3389 if (hw->autoneg_advertised & ADVERTISE_10_FULL) {
3390 DEBUGOUT("Advertise 10mb Full duplex\n");
3391 mii_autoneg_adv_reg |= NWAY_AR_10T_FD_CAPS;
3392 }
3393
3394 /* Do we want to advertise 100 Mb Half Duplex? */
3395 if (hw->autoneg_advertised & ADVERTISE_100_HALF) {
3396 DEBUGOUT("Advertise 100mb Half duplex\n");
3397 mii_autoneg_adv_reg |= NWAY_AR_100TX_HD_CAPS;
3398 }
3399
3400 /* Do we want to advertise 100 Mb Full Duplex? */
3401 if (hw->autoneg_advertised & ADVERTISE_100_FULL) {
3402 DEBUGOUT("Advertise 100mb Full duplex\n");
3403 mii_autoneg_adv_reg |= NWAY_AR_100TX_FD_CAPS;
3404 }
3405
3406 /* We do not allow the Phy to advertise 1000 Mb Half Duplex */
3407 if (hw->autoneg_advertised & ADVERTISE_1000_HALF) {
3408 DEBUGOUT
3409 ("Advertise 1000mb Half duplex requested, request denied!\n");
3410 }
3411
3412 /* Do we want to advertise 1000 Mb Full Duplex? */
3413 if (hw->autoneg_advertised & ADVERTISE_1000_FULL) {
3414 DEBUGOUT("Advertise 1000mb Full duplex\n");
3415 mii_1000t_ctrl_reg |= CR_1000T_FD_CAPS;
3416 }
3417
3418 /* Check for a software override of the flow control settings, and
3419 * setup the PHY advertisement registers accordingly. If
3420 * auto-negotiation is enabled, then software will have to set the
3421 * "PAUSE" bits to the correct value in the Auto-Negotiation
3422 * Advertisement Register (PHY_AUTONEG_ADV) and re-start auto-negotiation.
3423 *
3424 * The possible values of the "fc" parameter are:
3425 * 0: Flow control is completely disabled
3426 * 1: Rx flow control is enabled (we can receive pause frames
3427 * but not send pause frames).
3428 * 2: Tx flow control is enabled (we can send pause frames
3429 * but we do not support receiving pause frames).
3430 * 3: Both Rx and TX flow control (symmetric) are enabled.
3431 * other: No software override. The flow control configuration
3432 * in the EEPROM is used.
3433 */
3434 switch (hw->fc) {
3435 case e1000_fc_none: /* 0 */
3436 /* Flow control (RX & TX) is completely disabled by a
3437 * software over-ride.
3438 */
3439 mii_autoneg_adv_reg &= ~(NWAY_AR_ASM_DIR | NWAY_AR_PAUSE);
3440 break;
3441 case e1000_fc_rx_pause: /* 1 */
3442 /* RX Flow control is enabled, and TX Flow control is
3443 * disabled, by a software over-ride.
3444 */
3445 /* Since there really isn't a way to advertise that we are
3446 * capable of RX Pause ONLY, we will advertise that we
3447 * support both symmetric and asymmetric RX PAUSE. Later
3448 * (in e1000_config_fc_after_link_up) we will disable the
3449 *hw's ability to send PAUSE frames.
3450 */
3451 mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE);
3452 break;
3453 case e1000_fc_tx_pause: /* 2 */
3454 /* TX Flow control is enabled, and RX Flow control is
3455 * disabled, by a software over-ride.
3456 */
3457 mii_autoneg_adv_reg |= NWAY_AR_ASM_DIR;
3458 mii_autoneg_adv_reg &= ~NWAY_AR_PAUSE;
3459 break;
3460 case e1000_fc_full: /* 3 */
3461 /* Flow control (both RX and TX) is enabled by a software
3462 * over-ride.
3463 */
3464 mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE);
3465 break;
3466 default:
3467 DEBUGOUT("Flow control param set incorrectly\n");
3468 return -E1000_ERR_CONFIG;
3469 }
3470
3471 ret_val = e1000_write_phy_reg(hw, PHY_AUTONEG_ADV, mii_autoneg_adv_reg);
3472 if (ret_val)
3473 return ret_val;
3474
3475 DEBUGOUT("Auto-Neg Advertising %x\n", mii_autoneg_adv_reg);
3476
3477 if (hw->phy_type != e1000_phy_ife) {
3478 ret_val = e1000_write_phy_reg(hw, PHY_1000T_CTRL,
3479 mii_1000t_ctrl_reg);
3480 if (ret_val)
3481 return ret_val;
3482 }
3483
3484 return E1000_SUCCESS;
3485 }
3486
3487 /******************************************************************************
3488 * Sets the collision distance in the Transmit Control register
3489 *
3490 * hw - Struct containing variables accessed by shared code
3491 *
3492 * Link should have been established previously. Reads the speed and duplex
3493 * information from the Device Status register.
3494 ******************************************************************************/
3495 static void
e1000_config_collision_dist(struct e1000_hw * hw)3496 e1000_config_collision_dist(struct e1000_hw *hw)
3497 {
3498 uint32_t tctl, coll_dist;
3499
3500 DEBUGFUNC();
3501
3502 if (hw->mac_type < e1000_82543)
3503 coll_dist = E1000_COLLISION_DISTANCE_82542;
3504 else
3505 coll_dist = E1000_COLLISION_DISTANCE;
3506
3507 tctl = E1000_READ_REG(hw, TCTL);
3508
3509 tctl &= ~E1000_TCTL_COLD;
3510 tctl |= coll_dist << E1000_COLD_SHIFT;
3511
3512 E1000_WRITE_REG(hw, TCTL, tctl);
3513 E1000_WRITE_FLUSH(hw);
3514 }
3515
3516 /******************************************************************************
3517 * Sets MAC speed and duplex settings to reflect the those in the PHY
3518 *
3519 * hw - Struct containing variables accessed by shared code
3520 * mii_reg - data to write to the MII control register
3521 *
3522 * The contents of the PHY register containing the needed information need to
3523 * be passed in.
3524 ******************************************************************************/
3525 static int
e1000_config_mac_to_phy(struct e1000_hw * hw)3526 e1000_config_mac_to_phy(struct e1000_hw *hw)
3527 {
3528 uint32_t ctrl;
3529 uint16_t phy_data;
3530
3531 DEBUGFUNC();
3532
3533 /* Read the Device Control Register and set the bits to Force Speed
3534 * and Duplex.
3535 */
3536 ctrl = E1000_READ_REG(hw, CTRL);
3537 ctrl |= (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
3538 ctrl &= ~(E1000_CTRL_ILOS);
3539 ctrl |= (E1000_CTRL_SPD_SEL);
3540
3541 /* Set up duplex in the Device Control and Transmit Control
3542 * registers depending on negotiated values.
3543 */
3544 if (e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS, &phy_data) < 0) {
3545 DEBUGOUT("PHY Read Error\n");
3546 return -E1000_ERR_PHY;
3547 }
3548 if (phy_data & M88E1000_PSSR_DPLX)
3549 ctrl |= E1000_CTRL_FD;
3550 else
3551 ctrl &= ~E1000_CTRL_FD;
3552
3553 e1000_config_collision_dist(hw);
3554
3555 /* Set up speed in the Device Control register depending on
3556 * negotiated values.
3557 */
3558 if ((phy_data & M88E1000_PSSR_SPEED) == M88E1000_PSSR_1000MBS)
3559 ctrl |= E1000_CTRL_SPD_1000;
3560 else if ((phy_data & M88E1000_PSSR_SPEED) == M88E1000_PSSR_100MBS)
3561 ctrl |= E1000_CTRL_SPD_100;
3562 /* Write the configured values back to the Device Control Reg. */
3563 E1000_WRITE_REG(hw, CTRL, ctrl);
3564 return 0;
3565 }
3566
3567 /******************************************************************************
3568 * Forces the MAC's flow control settings.
3569 *
3570 * hw - Struct containing variables accessed by shared code
3571 *
3572 * Sets the TFCE and RFCE bits in the device control register to reflect
3573 * the adapter settings. TFCE and RFCE need to be explicitly set by
3574 * software when a Copper PHY is used because autonegotiation is managed
3575 * by the PHY rather than the MAC. Software must also configure these
3576 * bits when link is forced on a fiber connection.
3577 *****************************************************************************/
3578 static int
e1000_force_mac_fc(struct e1000_hw * hw)3579 e1000_force_mac_fc(struct e1000_hw *hw)
3580 {
3581 uint32_t ctrl;
3582
3583 DEBUGFUNC();
3584
3585 /* Get the current configuration of the Device Control Register */
3586 ctrl = E1000_READ_REG(hw, CTRL);
3587
3588 /* Because we didn't get link via the internal auto-negotiation
3589 * mechanism (we either forced link or we got link via PHY
3590 * auto-neg), we have to manually enable/disable transmit an
3591 * receive flow control.
3592 *
3593 * The "Case" statement below enables/disable flow control
3594 * according to the "hw->fc" parameter.
3595 *
3596 * The possible values of the "fc" parameter are:
3597 * 0: Flow control is completely disabled
3598 * 1: Rx flow control is enabled (we can receive pause
3599 * frames but not send pause frames).
3600 * 2: Tx flow control is enabled (we can send pause frames
3601 * frames but we do not receive pause frames).
3602 * 3: Both Rx and TX flow control (symmetric) is enabled.
3603 * other: No other values should be possible at this point.
3604 */
3605
3606 switch (hw->fc) {
3607 case e1000_fc_none:
3608 ctrl &= (~(E1000_CTRL_TFCE | E1000_CTRL_RFCE));
3609 break;
3610 case e1000_fc_rx_pause:
3611 ctrl &= (~E1000_CTRL_TFCE);
3612 ctrl |= E1000_CTRL_RFCE;
3613 break;
3614 case e1000_fc_tx_pause:
3615 ctrl &= (~E1000_CTRL_RFCE);
3616 ctrl |= E1000_CTRL_TFCE;
3617 break;
3618 case e1000_fc_full:
3619 ctrl |= (E1000_CTRL_TFCE | E1000_CTRL_RFCE);
3620 break;
3621 default:
3622 DEBUGOUT("Flow control param set incorrectly\n");
3623 return -E1000_ERR_CONFIG;
3624 }
3625
3626 /* Disable TX Flow Control for 82542 (rev 2.0) */
3627 if (hw->mac_type == e1000_82542_rev2_0)
3628 ctrl &= (~E1000_CTRL_TFCE);
3629
3630 E1000_WRITE_REG(hw, CTRL, ctrl);
3631 return 0;
3632 }
3633
3634 /******************************************************************************
3635 * Configures flow control settings after link is established
3636 *
3637 * hw - Struct containing variables accessed by shared code
3638 *
3639 * Should be called immediately after a valid link has been established.
3640 * Forces MAC flow control settings if link was forced. When in MII/GMII mode
3641 * and autonegotiation is enabled, the MAC flow control settings will be set
3642 * based on the flow control negotiated by the PHY. In TBI mode, the TFCE
3643 * and RFCE bits will be automaticaly set to the negotiated flow control mode.
3644 *****************************************************************************/
3645 static int32_t
e1000_config_fc_after_link_up(struct e1000_hw * hw)3646 e1000_config_fc_after_link_up(struct e1000_hw *hw)
3647 {
3648 int32_t ret_val;
3649 uint16_t mii_status_reg;
3650 uint16_t mii_nway_adv_reg;
3651 uint16_t mii_nway_lp_ability_reg;
3652 uint16_t speed;
3653 uint16_t duplex;
3654
3655 DEBUGFUNC();
3656
3657 /* Check for the case where we have fiber media and auto-neg failed
3658 * so we had to force link. In this case, we need to force the
3659 * configuration of the MAC to match the "fc" parameter.
3660 */
3661 if (((hw->media_type == e1000_media_type_fiber) && (hw->autoneg_failed))
3662 || ((hw->media_type == e1000_media_type_internal_serdes)
3663 && (hw->autoneg_failed))
3664 || ((hw->media_type == e1000_media_type_copper)
3665 && (!hw->autoneg))) {
3666 ret_val = e1000_force_mac_fc(hw);
3667 if (ret_val < 0) {
3668 DEBUGOUT("Error forcing flow control settings\n");
3669 return ret_val;
3670 }
3671 }
3672
3673 /* Check for the case where we have copper media and auto-neg is
3674 * enabled. In this case, we need to check and see if Auto-Neg
3675 * has completed, and if so, how the PHY and link partner has
3676 * flow control configured.
3677 */
3678 if (hw->media_type == e1000_media_type_copper) {
3679 /* Read the MII Status Register and check to see if AutoNeg
3680 * has completed. We read this twice because this reg has
3681 * some "sticky" (latched) bits.
3682 */
3683 if (e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg) < 0) {
3684 DEBUGOUT("PHY Read Error\n");
3685 return -E1000_ERR_PHY;
3686 }
3687 if (e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg) < 0) {
3688 DEBUGOUT("PHY Read Error\n");
3689 return -E1000_ERR_PHY;
3690 }
3691
3692 if (mii_status_reg & MII_SR_AUTONEG_COMPLETE) {
3693 /* The AutoNeg process has completed, so we now need to
3694 * read both the Auto Negotiation Advertisement Register
3695 * (Address 4) and the Auto_Negotiation Base Page Ability
3696 * Register (Address 5) to determine how flow control was
3697 * negotiated.
3698 */
3699 if (e1000_read_phy_reg
3700 (hw, PHY_AUTONEG_ADV, &mii_nway_adv_reg) < 0) {
3701 DEBUGOUT("PHY Read Error\n");
3702 return -E1000_ERR_PHY;
3703 }
3704 if (e1000_read_phy_reg
3705 (hw, PHY_LP_ABILITY,
3706 &mii_nway_lp_ability_reg) < 0) {
3707 DEBUGOUT("PHY Read Error\n");
3708 return -E1000_ERR_PHY;
3709 }
3710
3711 /* Two bits in the Auto Negotiation Advertisement Register
3712 * (Address 4) and two bits in the Auto Negotiation Base
3713 * Page Ability Register (Address 5) determine flow control
3714 * for both the PHY and the link partner. The following
3715 * table, taken out of the IEEE 802.3ab/D6.0 dated March 25,
3716 * 1999, describes these PAUSE resolution bits and how flow
3717 * control is determined based upon these settings.
3718 * NOTE: DC = Don't Care
3719 *
3720 * LOCAL DEVICE | LINK PARTNER
3721 * PAUSE | ASM_DIR | PAUSE | ASM_DIR | NIC Resolution
3722 *-------|---------|-------|---------|--------------------
3723 * 0 | 0 | DC | DC | e1000_fc_none
3724 * 0 | 1 | 0 | DC | e1000_fc_none
3725 * 0 | 1 | 1 | 0 | e1000_fc_none
3726 * 0 | 1 | 1 | 1 | e1000_fc_tx_pause
3727 * 1 | 0 | 0 | DC | e1000_fc_none
3728 * 1 | DC | 1 | DC | e1000_fc_full
3729 * 1 | 1 | 0 | 0 | e1000_fc_none
3730 * 1 | 1 | 0 | 1 | e1000_fc_rx_pause
3731 *
3732 */
3733 /* Are both PAUSE bits set to 1? If so, this implies
3734 * Symmetric Flow Control is enabled at both ends. The
3735 * ASM_DIR bits are irrelevant per the spec.
3736 *
3737 * For Symmetric Flow Control:
3738 *
3739 * LOCAL DEVICE | LINK PARTNER
3740 * PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result
3741 *-------|---------|-------|---------|--------------------
3742 * 1 | DC | 1 | DC | e1000_fc_full
3743 *
3744 */
3745 if ((mii_nway_adv_reg & NWAY_AR_PAUSE) &&
3746 (mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE)) {
3747 /* Now we need to check if the user selected RX ONLY
3748 * of pause frames. In this case, we had to advertise
3749 * FULL flow control because we could not advertise RX
3750 * ONLY. Hence, we must now check to see if we need to
3751 * turn OFF the TRANSMISSION of PAUSE frames.
3752 */
3753 if (hw->original_fc == e1000_fc_full) {
3754 hw->fc = e1000_fc_full;
3755 DEBUGOUT("Flow Control = FULL.\r\n");
3756 } else {
3757 hw->fc = e1000_fc_rx_pause;
3758 DEBUGOUT
3759 ("Flow Control = RX PAUSE frames only.\r\n");
3760 }
3761 }
3762 /* For receiving PAUSE frames ONLY.
3763 *
3764 * LOCAL DEVICE | LINK PARTNER
3765 * PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result
3766 *-------|---------|-------|---------|--------------------
3767 * 0 | 1 | 1 | 1 | e1000_fc_tx_pause
3768 *
3769 */
3770 else if (!(mii_nway_adv_reg & NWAY_AR_PAUSE) &&
3771 (mii_nway_adv_reg & NWAY_AR_ASM_DIR) &&
3772 (mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE) &&
3773 (mii_nway_lp_ability_reg & NWAY_LPAR_ASM_DIR))
3774 {
3775 hw->fc = e1000_fc_tx_pause;
3776 DEBUGOUT
3777 ("Flow Control = TX PAUSE frames only.\r\n");
3778 }
3779 /* For transmitting PAUSE frames ONLY.
3780 *
3781 * LOCAL DEVICE | LINK PARTNER
3782 * PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result
3783 *-------|---------|-------|---------|--------------------
3784 * 1 | 1 | 0 | 1 | e1000_fc_rx_pause
3785 *
3786 */
3787 else if ((mii_nway_adv_reg & NWAY_AR_PAUSE) &&
3788 (mii_nway_adv_reg & NWAY_AR_ASM_DIR) &&
3789 !(mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE) &&
3790 (mii_nway_lp_ability_reg & NWAY_LPAR_ASM_DIR))
3791 {
3792 hw->fc = e1000_fc_rx_pause;
3793 DEBUGOUT
3794 ("Flow Control = RX PAUSE frames only.\r\n");
3795 }
3796 /* Per the IEEE spec, at this point flow control should be
3797 * disabled. However, we want to consider that we could
3798 * be connected to a legacy switch that doesn't advertise
3799 * desired flow control, but can be forced on the link
3800 * partner. So if we advertised no flow control, that is
3801 * what we will resolve to. If we advertised some kind of
3802 * receive capability (Rx Pause Only or Full Flow Control)
3803 * and the link partner advertised none, we will configure
3804 * ourselves to enable Rx Flow Control only. We can do
3805 * this safely for two reasons: If the link partner really
3806 * didn't want flow control enabled, and we enable Rx, no
3807 * harm done since we won't be receiving any PAUSE frames
3808 * anyway. If the intent on the link partner was to have
3809 * flow control enabled, then by us enabling RX only, we
3810 * can at least receive pause frames and process them.
3811 * This is a good idea because in most cases, since we are
3812 * predominantly a server NIC, more times than not we will
3813 * be asked to delay transmission of packets than asking
3814 * our link partner to pause transmission of frames.
3815 */
3816 else if (hw->original_fc == e1000_fc_none ||
3817 hw->original_fc == e1000_fc_tx_pause) {
3818 hw->fc = e1000_fc_none;
3819 DEBUGOUT("Flow Control = NONE.\r\n");
3820 } else {
3821 hw->fc = e1000_fc_rx_pause;
3822 DEBUGOUT
3823 ("Flow Control = RX PAUSE frames only.\r\n");
3824 }
3825
3826 /* Now we need to do one last check... If we auto-
3827 * negotiated to HALF DUPLEX, flow control should not be
3828 * enabled per IEEE 802.3 spec.
3829 */
3830 e1000_get_speed_and_duplex(hw, &speed, &duplex);
3831
3832 if (duplex == HALF_DUPLEX)
3833 hw->fc = e1000_fc_none;
3834
3835 /* Now we call a subroutine to actually force the MAC
3836 * controller to use the correct flow control settings.
3837 */
3838 ret_val = e1000_force_mac_fc(hw);
3839 if (ret_val < 0) {
3840 DEBUGOUT
3841 ("Error forcing flow control settings\n");
3842 return ret_val;
3843 }
3844 } else {
3845 DEBUGOUT
3846 ("Copper PHY and Auto Neg has not completed.\r\n");
3847 }
3848 }
3849 return E1000_SUCCESS;
3850 }
3851
3852 /******************************************************************************
3853 * Checks to see if the link status of the hardware has changed.
3854 *
3855 * hw - Struct containing variables accessed by shared code
3856 *
3857 * Called by any function that needs to check the link status of the adapter.
3858 *****************************************************************************/
3859 static int
e1000_check_for_link(struct e1000_hw * hw)3860 e1000_check_for_link(struct e1000_hw *hw)
3861 {
3862 uint32_t rxcw;
3863 uint32_t ctrl;
3864 uint32_t status;
3865 uint32_t rctl;
3866 uint32_t signal;
3867 int32_t ret_val;
3868 uint16_t phy_data;
3869 uint16_t lp_capability;
3870
3871 DEBUGFUNC();
3872
3873 /* On adapters with a MAC newer that 82544, SW Defineable pin 1 will be
3874 * set when the optics detect a signal. On older adapters, it will be
3875 * cleared when there is a signal
3876 */
3877 ctrl = E1000_READ_REG(hw, CTRL);
3878 if ((hw->mac_type > e1000_82544) && !(ctrl & E1000_CTRL_ILOS))
3879 signal = E1000_CTRL_SWDPIN1;
3880 else
3881 signal = 0;
3882
3883 status = E1000_READ_REG(hw, STATUS);
3884 rxcw = E1000_READ_REG(hw, RXCW);
3885 DEBUGOUT("ctrl: %#08x status %#08x rxcw %#08x\n", ctrl, status, rxcw);
3886
3887 /* If we have a copper PHY then we only want to go out to the PHY
3888 * registers to see if Auto-Neg has completed and/or if our link
3889 * status has changed. The get_link_status flag will be set if we
3890 * receive a Link Status Change interrupt or we have Rx Sequence
3891 * Errors.
3892 */
3893 if ((hw->media_type == e1000_media_type_copper) && hw->get_link_status) {
3894 /* First we want to see if the MII Status Register reports
3895 * link. If so, then we want to get the current speed/duplex
3896 * of the PHY.
3897 * Read the register twice since the link bit is sticky.
3898 */
3899 if (e1000_read_phy_reg(hw, PHY_STATUS, &phy_data) < 0) {
3900 DEBUGOUT("PHY Read Error\n");
3901 return -E1000_ERR_PHY;
3902 }
3903 if (e1000_read_phy_reg(hw, PHY_STATUS, &phy_data) < 0) {
3904 DEBUGOUT("PHY Read Error\n");
3905 return -E1000_ERR_PHY;
3906 }
3907
3908 if (phy_data & MII_SR_LINK_STATUS) {
3909 hw->get_link_status = false;
3910 } else {
3911 /* No link detected */
3912 return -E1000_ERR_NOLINK;
3913 }
3914
3915 /* We have a M88E1000 PHY and Auto-Neg is enabled. If we
3916 * have Si on board that is 82544 or newer, Auto
3917 * Speed Detection takes care of MAC speed/duplex
3918 * configuration. So we only need to configure Collision
3919 * Distance in the MAC. Otherwise, we need to force
3920 * speed/duplex on the MAC to the current PHY speed/duplex
3921 * settings.
3922 */
3923 if (hw->mac_type >= e1000_82544)
3924 e1000_config_collision_dist(hw);
3925 else {
3926 ret_val = e1000_config_mac_to_phy(hw);
3927 if (ret_val < 0) {
3928 DEBUGOUT
3929 ("Error configuring MAC to PHY settings\n");
3930 return ret_val;
3931 }
3932 }
3933
3934 /* Configure Flow Control now that Auto-Neg has completed. First, we
3935 * need to restore the desired flow control settings because we may
3936 * have had to re-autoneg with a different link partner.
3937 */
3938 ret_val = e1000_config_fc_after_link_up(hw);
3939 if (ret_val < 0) {
3940 DEBUGOUT("Error configuring flow control\n");
3941 return ret_val;
3942 }
3943
3944 /* At this point we know that we are on copper and we have
3945 * auto-negotiated link. These are conditions for checking the link
3946 * parter capability register. We use the link partner capability to
3947 * determine if TBI Compatibility needs to be turned on or off. If
3948 * the link partner advertises any speed in addition to Gigabit, then
3949 * we assume that they are GMII-based, and TBI compatibility is not
3950 * needed. If no other speeds are advertised, we assume the link
3951 * partner is TBI-based, and we turn on TBI Compatibility.
3952 */
3953 if (hw->tbi_compatibility_en) {
3954 if (e1000_read_phy_reg
3955 (hw, PHY_LP_ABILITY, &lp_capability) < 0) {
3956 DEBUGOUT("PHY Read Error\n");
3957 return -E1000_ERR_PHY;
3958 }
3959 if (lp_capability & (NWAY_LPAR_10T_HD_CAPS |
3960 NWAY_LPAR_10T_FD_CAPS |
3961 NWAY_LPAR_100TX_HD_CAPS |
3962 NWAY_LPAR_100TX_FD_CAPS |
3963 NWAY_LPAR_100T4_CAPS)) {
3964 /* If our link partner advertises anything in addition to
3965 * gigabit, we do not need to enable TBI compatibility.
3966 */
3967 if (hw->tbi_compatibility_on) {
3968 /* If we previously were in the mode, turn it off. */
3969 rctl = E1000_READ_REG(hw, RCTL);
3970 rctl &= ~E1000_RCTL_SBP;
3971 E1000_WRITE_REG(hw, RCTL, rctl);
3972 hw->tbi_compatibility_on = false;
3973 }
3974 } else {
3975 /* If TBI compatibility is was previously off, turn it on. For
3976 * compatibility with a TBI link partner, we will store bad
3977 * packets. Some frames have an additional byte on the end and
3978 * will look like CRC errors to to the hardware.
3979 */
3980 if (!hw->tbi_compatibility_on) {
3981 hw->tbi_compatibility_on = true;
3982 rctl = E1000_READ_REG(hw, RCTL);
3983 rctl |= E1000_RCTL_SBP;
3984 E1000_WRITE_REG(hw, RCTL, rctl);
3985 }
3986 }
3987 }
3988 }
3989 /* If we don't have link (auto-negotiation failed or link partner cannot
3990 * auto-negotiate), the cable is plugged in (we have signal), and our
3991 * link partner is not trying to auto-negotiate with us (we are receiving
3992 * idles or data), we need to force link up. We also need to give
3993 * auto-negotiation time to complete, in case the cable was just plugged
3994 * in. The autoneg_failed flag does this.
3995 */
3996 else if ((hw->media_type == e1000_media_type_fiber) &&
3997 (!(status & E1000_STATUS_LU)) &&
3998 ((ctrl & E1000_CTRL_SWDPIN1) == signal) &&
3999 (!(rxcw & E1000_RXCW_C))) {
4000 if (hw->autoneg_failed == 0) {
4001 hw->autoneg_failed = 1;
4002 return 0;
4003 }
4004 DEBUGOUT("NOT RXing /C/, disable AutoNeg and force link.\r\n");
4005
4006 /* Disable auto-negotiation in the TXCW register */
4007 E1000_WRITE_REG(hw, TXCW, (hw->txcw & ~E1000_TXCW_ANE));
4008
4009 /* Force link-up and also force full-duplex. */
4010 ctrl = E1000_READ_REG(hw, CTRL);
4011 ctrl |= (E1000_CTRL_SLU | E1000_CTRL_FD);
4012 E1000_WRITE_REG(hw, CTRL, ctrl);
4013
4014 /* Configure Flow Control after forcing link up. */
4015 ret_val = e1000_config_fc_after_link_up(hw);
4016 if (ret_val < 0) {
4017 DEBUGOUT("Error configuring flow control\n");
4018 return ret_val;
4019 }
4020 }
4021 /* If we are forcing link and we are receiving /C/ ordered sets, re-enable
4022 * auto-negotiation in the TXCW register and disable forced link in the
4023 * Device Control register in an attempt to auto-negotiate with our link
4024 * partner.
4025 */
4026 else if ((hw->media_type == e1000_media_type_fiber) &&
4027 (ctrl & E1000_CTRL_SLU) && (rxcw & E1000_RXCW_C)) {
4028 DEBUGOUT
4029 ("RXing /C/, enable AutoNeg and stop forcing link.\r\n");
4030 E1000_WRITE_REG(hw, TXCW, hw->txcw);
4031 E1000_WRITE_REG(hw, CTRL, (ctrl & ~E1000_CTRL_SLU));
4032 }
4033 return 0;
4034 }
4035
4036 /******************************************************************************
4037 * Configure the MAC-to-PHY interface for 10/100Mbps
4038 *
4039 * hw - Struct containing variables accessed by shared code
4040 ******************************************************************************/
4041 static int32_t
e1000_configure_kmrn_for_10_100(struct e1000_hw * hw,uint16_t duplex)4042 e1000_configure_kmrn_for_10_100(struct e1000_hw *hw, uint16_t duplex)
4043 {
4044 int32_t ret_val = E1000_SUCCESS;
4045 uint32_t tipg;
4046 uint16_t reg_data;
4047
4048 DEBUGFUNC();
4049
4050 reg_data = E1000_KUMCTRLSTA_HD_CTRL_10_100_DEFAULT;
4051 ret_val = e1000_write_kmrn_reg(hw,
4052 E1000_KUMCTRLSTA_OFFSET_HD_CTRL, reg_data);
4053 if (ret_val)
4054 return ret_val;
4055
4056 /* Configure Transmit Inter-Packet Gap */
4057 tipg = E1000_READ_REG(hw, TIPG);
4058 tipg &= ~E1000_TIPG_IPGT_MASK;
4059 tipg |= DEFAULT_80003ES2LAN_TIPG_IPGT_10_100;
4060 E1000_WRITE_REG(hw, TIPG, tipg);
4061
4062 ret_val = e1000_read_phy_reg(hw, GG82563_PHY_KMRN_MODE_CTRL, ®_data);
4063
4064 if (ret_val)
4065 return ret_val;
4066
4067 if (duplex == HALF_DUPLEX)
4068 reg_data |= GG82563_KMCR_PASS_FALSE_CARRIER;
4069 else
4070 reg_data &= ~GG82563_KMCR_PASS_FALSE_CARRIER;
4071
4072 ret_val = e1000_write_phy_reg(hw, GG82563_PHY_KMRN_MODE_CTRL, reg_data);
4073
4074 return ret_val;
4075 }
4076
4077 static int32_t
e1000_configure_kmrn_for_1000(struct e1000_hw * hw)4078 e1000_configure_kmrn_for_1000(struct e1000_hw *hw)
4079 {
4080 int32_t ret_val = E1000_SUCCESS;
4081 uint16_t reg_data;
4082 uint32_t tipg;
4083
4084 DEBUGFUNC();
4085
4086 reg_data = E1000_KUMCTRLSTA_HD_CTRL_1000_DEFAULT;
4087 ret_val = e1000_write_kmrn_reg(hw,
4088 E1000_KUMCTRLSTA_OFFSET_HD_CTRL, reg_data);
4089 if (ret_val)
4090 return ret_val;
4091
4092 /* Configure Transmit Inter-Packet Gap */
4093 tipg = E1000_READ_REG(hw, TIPG);
4094 tipg &= ~E1000_TIPG_IPGT_MASK;
4095 tipg |= DEFAULT_80003ES2LAN_TIPG_IPGT_1000;
4096 E1000_WRITE_REG(hw, TIPG, tipg);
4097
4098 ret_val = e1000_read_phy_reg(hw, GG82563_PHY_KMRN_MODE_CTRL, ®_data);
4099
4100 if (ret_val)
4101 return ret_val;
4102
4103 reg_data &= ~GG82563_KMCR_PASS_FALSE_CARRIER;
4104 ret_val = e1000_write_phy_reg(hw, GG82563_PHY_KMRN_MODE_CTRL, reg_data);
4105
4106 return ret_val;
4107 }
4108
4109 /******************************************************************************
4110 * Detects the current speed and duplex settings of the hardware.
4111 *
4112 * hw - Struct containing variables accessed by shared code
4113 * speed - Speed of the connection
4114 * duplex - Duplex setting of the connection
4115 *****************************************************************************/
4116 static int
e1000_get_speed_and_duplex(struct e1000_hw * hw,uint16_t * speed,uint16_t * duplex)4117 e1000_get_speed_and_duplex(struct e1000_hw *hw, uint16_t *speed,
4118 uint16_t *duplex)
4119 {
4120 uint32_t status;
4121 int32_t ret_val;
4122 uint16_t phy_data;
4123
4124 DEBUGFUNC();
4125
4126 if (hw->mac_type >= e1000_82543) {
4127 status = E1000_READ_REG(hw, STATUS);
4128 if (status & E1000_STATUS_SPEED_1000) {
4129 *speed = SPEED_1000;
4130 DEBUGOUT("1000 Mbs, ");
4131 } else if (status & E1000_STATUS_SPEED_100) {
4132 *speed = SPEED_100;
4133 DEBUGOUT("100 Mbs, ");
4134 } else {
4135 *speed = SPEED_10;
4136 DEBUGOUT("10 Mbs, ");
4137 }
4138
4139 if (status & E1000_STATUS_FD) {
4140 *duplex = FULL_DUPLEX;
4141 DEBUGOUT("Full Duplex\r\n");
4142 } else {
4143 *duplex = HALF_DUPLEX;
4144 DEBUGOUT(" Half Duplex\r\n");
4145 }
4146 } else {
4147 DEBUGOUT("1000 Mbs, Full Duplex\r\n");
4148 *speed = SPEED_1000;
4149 *duplex = FULL_DUPLEX;
4150 }
4151
4152 /* IGP01 PHY may advertise full duplex operation after speed downgrade
4153 * even if it is operating at half duplex. Here we set the duplex
4154 * settings to match the duplex in the link partner's capabilities.
4155 */
4156 if (hw->phy_type == e1000_phy_igp && hw->speed_downgraded) {
4157 ret_val = e1000_read_phy_reg(hw, PHY_AUTONEG_EXP, &phy_data);
4158 if (ret_val)
4159 return ret_val;
4160
4161 if (!(phy_data & NWAY_ER_LP_NWAY_CAPS))
4162 *duplex = HALF_DUPLEX;
4163 else {
4164 ret_val = e1000_read_phy_reg(hw,
4165 PHY_LP_ABILITY, &phy_data);
4166 if (ret_val)
4167 return ret_val;
4168 if ((*speed == SPEED_100 &&
4169 !(phy_data & NWAY_LPAR_100TX_FD_CAPS))
4170 || (*speed == SPEED_10
4171 && !(phy_data & NWAY_LPAR_10T_FD_CAPS)))
4172 *duplex = HALF_DUPLEX;
4173 }
4174 }
4175
4176 if ((hw->mac_type == e1000_80003es2lan) &&
4177 (hw->media_type == e1000_media_type_copper)) {
4178 if (*speed == SPEED_1000)
4179 ret_val = e1000_configure_kmrn_for_1000(hw);
4180 else
4181 ret_val = e1000_configure_kmrn_for_10_100(hw, *duplex);
4182 if (ret_val)
4183 return ret_val;
4184 }
4185 return E1000_SUCCESS;
4186 }
4187
4188 /******************************************************************************
4189 * Blocks until autoneg completes or times out (~4.5 seconds)
4190 *
4191 * hw - Struct containing variables accessed by shared code
4192 ******************************************************************************/
4193 static int
e1000_wait_autoneg(struct e1000_hw * hw)4194 e1000_wait_autoneg(struct e1000_hw *hw)
4195 {
4196 uint16_t i;
4197 uint16_t phy_data;
4198
4199 DEBUGFUNC();
4200 DEBUGOUT("Waiting for Auto-Neg to complete.\n");
4201
4202 /* We will wait for autoneg to complete or timeout to expire. */
4203 for (i = PHY_AUTO_NEG_TIME; i > 0; i--) {
4204 /* Read the MII Status Register and wait for Auto-Neg
4205 * Complete bit to be set.
4206 */
4207 if (e1000_read_phy_reg(hw, PHY_STATUS, &phy_data) < 0) {
4208 DEBUGOUT("PHY Read Error\n");
4209 return -E1000_ERR_PHY;
4210 }
4211 if (e1000_read_phy_reg(hw, PHY_STATUS, &phy_data) < 0) {
4212 DEBUGOUT("PHY Read Error\n");
4213 return -E1000_ERR_PHY;
4214 }
4215 if (phy_data & MII_SR_AUTONEG_COMPLETE) {
4216 DEBUGOUT("Auto-Neg complete.\n");
4217 return 0;
4218 }
4219 mdelay(100);
4220 }
4221 DEBUGOUT("Auto-Neg timedout.\n");
4222 return -E1000_ERR_TIMEOUT;
4223 }
4224
4225 /******************************************************************************
4226 * Raises the Management Data Clock
4227 *
4228 * hw - Struct containing variables accessed by shared code
4229 * ctrl - Device control register's current value
4230 ******************************************************************************/
4231 static void
e1000_raise_mdi_clk(struct e1000_hw * hw,uint32_t * ctrl)4232 e1000_raise_mdi_clk(struct e1000_hw *hw, uint32_t * ctrl)
4233 {
4234 /* Raise the clock input to the Management Data Clock (by setting the MDC
4235 * bit), and then delay 2 microseconds.
4236 */
4237 E1000_WRITE_REG(hw, CTRL, (*ctrl | E1000_CTRL_MDC));
4238 E1000_WRITE_FLUSH(hw);
4239 udelay(2);
4240 }
4241
4242 /******************************************************************************
4243 * Lowers the Management Data Clock
4244 *
4245 * hw - Struct containing variables accessed by shared code
4246 * ctrl - Device control register's current value
4247 ******************************************************************************/
4248 static void
e1000_lower_mdi_clk(struct e1000_hw * hw,uint32_t * ctrl)4249 e1000_lower_mdi_clk(struct e1000_hw *hw, uint32_t * ctrl)
4250 {
4251 /* Lower the clock input to the Management Data Clock (by clearing the MDC
4252 * bit), and then delay 2 microseconds.
4253 */
4254 E1000_WRITE_REG(hw, CTRL, (*ctrl & ~E1000_CTRL_MDC));
4255 E1000_WRITE_FLUSH(hw);
4256 udelay(2);
4257 }
4258
4259 /******************************************************************************
4260 * Shifts data bits out to the PHY
4261 *
4262 * hw - Struct containing variables accessed by shared code
4263 * data - Data to send out to the PHY
4264 * count - Number of bits to shift out
4265 *
4266 * Bits are shifted out in MSB to LSB order.
4267 ******************************************************************************/
4268 static void
e1000_shift_out_mdi_bits(struct e1000_hw * hw,uint32_t data,uint16_t count)4269 e1000_shift_out_mdi_bits(struct e1000_hw *hw, uint32_t data, uint16_t count)
4270 {
4271 uint32_t ctrl;
4272 uint32_t mask;
4273
4274 /* We need to shift "count" number of bits out to the PHY. So, the value
4275 * in the "data" parameter will be shifted out to the PHY one bit at a
4276 * time. In order to do this, "data" must be broken down into bits.
4277 */
4278 mask = 0x01;
4279 mask <<= (count - 1);
4280
4281 ctrl = E1000_READ_REG(hw, CTRL);
4282
4283 /* Set MDIO_DIR and MDC_DIR direction bits to be used as output pins. */
4284 ctrl |= (E1000_CTRL_MDIO_DIR | E1000_CTRL_MDC_DIR);
4285
4286 while (mask) {
4287 /* A "1" is shifted out to the PHY by setting the MDIO bit to "1" and
4288 * then raising and lowering the Management Data Clock. A "0" is
4289 * shifted out to the PHY by setting the MDIO bit to "0" and then
4290 * raising and lowering the clock.
4291 */
4292 if (data & mask)
4293 ctrl |= E1000_CTRL_MDIO;
4294 else
4295 ctrl &= ~E1000_CTRL_MDIO;
4296
4297 E1000_WRITE_REG(hw, CTRL, ctrl);
4298 E1000_WRITE_FLUSH(hw);
4299
4300 udelay(2);
4301
4302 e1000_raise_mdi_clk(hw, &ctrl);
4303 e1000_lower_mdi_clk(hw, &ctrl);
4304
4305 mask = mask >> 1;
4306 }
4307 }
4308
4309 /******************************************************************************
4310 * Shifts data bits in from the PHY
4311 *
4312 * hw - Struct containing variables accessed by shared code
4313 *
4314 * Bits are shifted in in MSB to LSB order.
4315 ******************************************************************************/
4316 static uint16_t
e1000_shift_in_mdi_bits(struct e1000_hw * hw)4317 e1000_shift_in_mdi_bits(struct e1000_hw *hw)
4318 {
4319 uint32_t ctrl;
4320 uint16_t data = 0;
4321 uint8_t i;
4322
4323 /* In order to read a register from the PHY, we need to shift in a total
4324 * of 18 bits from the PHY. The first two bit (turnaround) times are used
4325 * to avoid contention on the MDIO pin when a read operation is performed.
4326 * These two bits are ignored by us and thrown away. Bits are "shifted in"
4327 * by raising the input to the Management Data Clock (setting the MDC bit),
4328 * and then reading the value of the MDIO bit.
4329 */
4330 ctrl = E1000_READ_REG(hw, CTRL);
4331
4332 /* Clear MDIO_DIR (SWDPIO1) to indicate this bit is to be used as input. */
4333 ctrl &= ~E1000_CTRL_MDIO_DIR;
4334 ctrl &= ~E1000_CTRL_MDIO;
4335
4336 E1000_WRITE_REG(hw, CTRL, ctrl);
4337 E1000_WRITE_FLUSH(hw);
4338
4339 /* Raise and Lower the clock before reading in the data. This accounts for
4340 * the turnaround bits. The first clock occurred when we clocked out the
4341 * last bit of the Register Address.
4342 */
4343 e1000_raise_mdi_clk(hw, &ctrl);
4344 e1000_lower_mdi_clk(hw, &ctrl);
4345
4346 for (data = 0, i = 0; i < 16; i++) {
4347 data = data << 1;
4348 e1000_raise_mdi_clk(hw, &ctrl);
4349 ctrl = E1000_READ_REG(hw, CTRL);
4350 /* Check to see if we shifted in a "1". */
4351 if (ctrl & E1000_CTRL_MDIO)
4352 data |= 1;
4353 e1000_lower_mdi_clk(hw, &ctrl);
4354 }
4355
4356 e1000_raise_mdi_clk(hw, &ctrl);
4357 e1000_lower_mdi_clk(hw, &ctrl);
4358
4359 return data;
4360 }
4361
4362 /*****************************************************************************
4363 * Reads the value from a PHY register
4364 *
4365 * hw - Struct containing variables accessed by shared code
4366 * reg_addr - address of the PHY register to read
4367 ******************************************************************************/
4368 static int
e1000_read_phy_reg(struct e1000_hw * hw,uint32_t reg_addr,uint16_t * phy_data)4369 e1000_read_phy_reg(struct e1000_hw *hw, uint32_t reg_addr, uint16_t * phy_data)
4370 {
4371 uint32_t i;
4372 uint32_t mdic = 0;
4373 const uint32_t phy_addr = 1;
4374
4375 if (reg_addr > MAX_PHY_REG_ADDRESS) {
4376 DEBUGOUT("PHY Address %d is out of range\n", reg_addr);
4377 return -E1000_ERR_PARAM;
4378 }
4379
4380 if (hw->mac_type > e1000_82543) {
4381 /* Set up Op-code, Phy Address, and register address in the MDI
4382 * Control register. The MAC will take care of interfacing with the
4383 * PHY to retrieve the desired data.
4384 */
4385 mdic = ((reg_addr << E1000_MDIC_REG_SHIFT) |
4386 (phy_addr << E1000_MDIC_PHY_SHIFT) |
4387 (E1000_MDIC_OP_READ));
4388
4389 E1000_WRITE_REG(hw, MDIC, mdic);
4390
4391 /* Poll the ready bit to see if the MDI read completed */
4392 for (i = 0; i < 64; i++) {
4393 udelay(10);
4394 mdic = E1000_READ_REG(hw, MDIC);
4395 if (mdic & E1000_MDIC_READY)
4396 break;
4397 }
4398 if (!(mdic & E1000_MDIC_READY)) {
4399 DEBUGOUT("MDI Read did not complete\n");
4400 return -E1000_ERR_PHY;
4401 }
4402 if (mdic & E1000_MDIC_ERROR) {
4403 DEBUGOUT("MDI Error\n");
4404 return -E1000_ERR_PHY;
4405 }
4406 *phy_data = (uint16_t) mdic;
4407 } else {
4408 /* We must first send a preamble through the MDIO pin to signal the
4409 * beginning of an MII instruction. This is done by sending 32
4410 * consecutive "1" bits.
4411 */
4412 e1000_shift_out_mdi_bits(hw, PHY_PREAMBLE, PHY_PREAMBLE_SIZE);
4413
4414 /* Now combine the next few fields that are required for a read
4415 * operation. We use this method instead of calling the
4416 * e1000_shift_out_mdi_bits routine five different times. The format of
4417 * a MII read instruction consists of a shift out of 14 bits and is
4418 * defined as follows:
4419 * <Preamble><SOF><Op Code><Phy Addr><Reg Addr>
4420 * followed by a shift in of 18 bits. This first two bits shifted in
4421 * are TurnAround bits used to avoid contention on the MDIO pin when a
4422 * READ operation is performed. These two bits are thrown away
4423 * followed by a shift in of 16 bits which contains the desired data.
4424 */
4425 mdic = ((reg_addr) | (phy_addr << 5) |
4426 (PHY_OP_READ << 10) | (PHY_SOF << 12));
4427
4428 e1000_shift_out_mdi_bits(hw, mdic, 14);
4429
4430 /* Now that we've shifted out the read command to the MII, we need to
4431 * "shift in" the 16-bit value (18 total bits) of the requested PHY
4432 * register address.
4433 */
4434 *phy_data = e1000_shift_in_mdi_bits(hw);
4435 }
4436 return 0;
4437 }
4438
4439 /******************************************************************************
4440 * Writes a value to a PHY register
4441 *
4442 * hw - Struct containing variables accessed by shared code
4443 * reg_addr - address of the PHY register to write
4444 * data - data to write to the PHY
4445 ******************************************************************************/
4446 static int
e1000_write_phy_reg(struct e1000_hw * hw,uint32_t reg_addr,uint16_t phy_data)4447 e1000_write_phy_reg(struct e1000_hw *hw, uint32_t reg_addr, uint16_t phy_data)
4448 {
4449 uint32_t i;
4450 uint32_t mdic = 0;
4451 const uint32_t phy_addr = 1;
4452
4453 if (reg_addr > MAX_PHY_REG_ADDRESS) {
4454 DEBUGOUT("PHY Address %d is out of range\n", reg_addr);
4455 return -E1000_ERR_PARAM;
4456 }
4457
4458 if (hw->mac_type > e1000_82543) {
4459 /* Set up Op-code, Phy Address, register address, and data intended
4460 * for the PHY register in the MDI Control register. The MAC will take
4461 * care of interfacing with the PHY to send the desired data.
4462 */
4463 mdic = (((uint32_t) phy_data) |
4464 (reg_addr << E1000_MDIC_REG_SHIFT) |
4465 (phy_addr << E1000_MDIC_PHY_SHIFT) |
4466 (E1000_MDIC_OP_WRITE));
4467
4468 E1000_WRITE_REG(hw, MDIC, mdic);
4469
4470 /* Poll the ready bit to see if the MDI read completed */
4471 for (i = 0; i < 64; i++) {
4472 udelay(10);
4473 mdic = E1000_READ_REG(hw, MDIC);
4474 if (mdic & E1000_MDIC_READY)
4475 break;
4476 }
4477 if (!(mdic & E1000_MDIC_READY)) {
4478 DEBUGOUT("MDI Write did not complete\n");
4479 return -E1000_ERR_PHY;
4480 }
4481 } else {
4482 /* We'll need to use the SW defined pins to shift the write command
4483 * out to the PHY. We first send a preamble to the PHY to signal the
4484 * beginning of the MII instruction. This is done by sending 32
4485 * consecutive "1" bits.
4486 */
4487 e1000_shift_out_mdi_bits(hw, PHY_PREAMBLE, PHY_PREAMBLE_SIZE);
4488
4489 /* Now combine the remaining required fields that will indicate a
4490 * write operation. We use this method instead of calling the
4491 * e1000_shift_out_mdi_bits routine for each field in the command. The
4492 * format of a MII write instruction is as follows:
4493 * <Preamble><SOF><Op Code><Phy Addr><Reg Addr><Turnaround><Data>.
4494 */
4495 mdic = ((PHY_TURNAROUND) | (reg_addr << 2) | (phy_addr << 7) |
4496 (PHY_OP_WRITE << 12) | (PHY_SOF << 14));
4497 mdic <<= 16;
4498 mdic |= (uint32_t) phy_data;
4499
4500 e1000_shift_out_mdi_bits(hw, mdic, 32);
4501 }
4502 return 0;
4503 }
4504
4505 /******************************************************************************
4506 * Checks if PHY reset is blocked due to SOL/IDER session, for example.
4507 * Returning E1000_BLK_PHY_RESET isn't necessarily an error. But it's up to
4508 * the caller to figure out how to deal with it.
4509 *
4510 * hw - Struct containing variables accessed by shared code
4511 *
4512 * returns: - E1000_BLK_PHY_RESET
4513 * E1000_SUCCESS
4514 *
4515 *****************************************************************************/
4516 int32_t
e1000_check_phy_reset_block(struct e1000_hw * hw)4517 e1000_check_phy_reset_block(struct e1000_hw *hw)
4518 {
4519 uint32_t manc = 0;
4520 uint32_t fwsm = 0;
4521
4522 if (hw->mac_type == e1000_ich8lan) {
4523 fwsm = E1000_READ_REG(hw, FWSM);
4524 return (fwsm & E1000_FWSM_RSPCIPHY) ? E1000_SUCCESS
4525 : E1000_BLK_PHY_RESET;
4526 }
4527
4528 if (hw->mac_type > e1000_82547_rev_2)
4529 manc = E1000_READ_REG(hw, MANC);
4530 return (manc & E1000_MANC_BLK_PHY_RST_ON_IDE) ?
4531 E1000_BLK_PHY_RESET : E1000_SUCCESS;
4532 }
4533
4534 /***************************************************************************
4535 * Checks if the PHY configuration is done
4536 *
4537 * hw: Struct containing variables accessed by shared code
4538 *
4539 * returns: - E1000_ERR_RESET if fail to reset MAC
4540 * E1000_SUCCESS at any other case.
4541 *
4542 ***************************************************************************/
4543 static int32_t
e1000_get_phy_cfg_done(struct e1000_hw * hw)4544 e1000_get_phy_cfg_done(struct e1000_hw *hw)
4545 {
4546 int32_t timeout = PHY_CFG_TIMEOUT;
4547 uint32_t cfg_mask = E1000_EEPROM_CFG_DONE;
4548
4549 DEBUGFUNC();
4550
4551 switch (hw->mac_type) {
4552 default:
4553 mdelay(10);
4554 break;
4555
4556 case e1000_80003es2lan:
4557 /* Separate *_CFG_DONE_* bit for each port */
4558 if (e1000_is_second_port(hw))
4559 cfg_mask = E1000_EEPROM_CFG_DONE_PORT_1;
4560 /* Fall Through */
4561
4562 case e1000_82571:
4563 case e1000_82572:
4564 case e1000_igb:
4565 while (timeout) {
4566 if (hw->mac_type == e1000_igb) {
4567 if (E1000_READ_REG(hw, I210_EEMNGCTL) & cfg_mask)
4568 break;
4569 } else {
4570 if (E1000_READ_REG(hw, EEMNGCTL) & cfg_mask)
4571 break;
4572 }
4573 mdelay(1);
4574 timeout--;
4575 }
4576 if (!timeout) {
4577 DEBUGOUT("MNG configuration cycle has not "
4578 "completed.\n");
4579 return -E1000_ERR_RESET;
4580 }
4581 break;
4582 }
4583
4584 return E1000_SUCCESS;
4585 }
4586
4587 /******************************************************************************
4588 * Returns the PHY to the power-on reset state
4589 *
4590 * hw - Struct containing variables accessed by shared code
4591 ******************************************************************************/
4592 int32_t
e1000_phy_hw_reset(struct e1000_hw * hw)4593 e1000_phy_hw_reset(struct e1000_hw *hw)
4594 {
4595 uint16_t swfw = E1000_SWFW_PHY0_SM;
4596 uint32_t ctrl, ctrl_ext;
4597 uint32_t led_ctrl;
4598 int32_t ret_val;
4599
4600 DEBUGFUNC();
4601
4602 /* In the case of the phy reset being blocked, it's not an error, we
4603 * simply return success without performing the reset. */
4604 ret_val = e1000_check_phy_reset_block(hw);
4605 if (ret_val)
4606 return E1000_SUCCESS;
4607
4608 DEBUGOUT("Resetting Phy...\n");
4609
4610 if (hw->mac_type > e1000_82543) {
4611 if (e1000_is_second_port(hw))
4612 swfw = E1000_SWFW_PHY1_SM;
4613
4614 if (e1000_swfw_sync_acquire(hw, swfw)) {
4615 DEBUGOUT("Unable to acquire swfw sync\n");
4616 return -E1000_ERR_SWFW_SYNC;
4617 }
4618
4619 /* Read the device control register and assert the E1000_CTRL_PHY_RST
4620 * bit. Then, take it out of reset.
4621 */
4622 ctrl = E1000_READ_REG(hw, CTRL);
4623 E1000_WRITE_REG(hw, CTRL, ctrl | E1000_CTRL_PHY_RST);
4624 E1000_WRITE_FLUSH(hw);
4625
4626 if (hw->mac_type < e1000_82571)
4627 udelay(10);
4628 else
4629 udelay(100);
4630
4631 E1000_WRITE_REG(hw, CTRL, ctrl);
4632 E1000_WRITE_FLUSH(hw);
4633
4634 if (hw->mac_type >= e1000_82571)
4635 mdelay(10);
4636
4637 } else {
4638 /* Read the Extended Device Control Register, assert the PHY_RESET_DIR
4639 * bit to put the PHY into reset. Then, take it out of reset.
4640 */
4641 ctrl_ext = E1000_READ_REG(hw, CTRL_EXT);
4642 ctrl_ext |= E1000_CTRL_EXT_SDP4_DIR;
4643 ctrl_ext &= ~E1000_CTRL_EXT_SDP4_DATA;
4644 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
4645 E1000_WRITE_FLUSH(hw);
4646 mdelay(10);
4647 ctrl_ext |= E1000_CTRL_EXT_SDP4_DATA;
4648 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
4649 E1000_WRITE_FLUSH(hw);
4650 }
4651 udelay(150);
4652
4653 if ((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_82547)) {
4654 /* Configure activity LED after PHY reset */
4655 led_ctrl = E1000_READ_REG(hw, LEDCTL);
4656 led_ctrl &= IGP_ACTIVITY_LED_MASK;
4657 led_ctrl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE);
4658 E1000_WRITE_REG(hw, LEDCTL, led_ctrl);
4659 }
4660
4661 e1000_swfw_sync_release(hw, swfw);
4662
4663 /* Wait for FW to finish PHY configuration. */
4664 ret_val = e1000_get_phy_cfg_done(hw);
4665 if (ret_val != E1000_SUCCESS)
4666 return ret_val;
4667
4668 return ret_val;
4669 }
4670
4671 /******************************************************************************
4672 * IGP phy init script - initializes the GbE PHY
4673 *
4674 * hw - Struct containing variables accessed by shared code
4675 *****************************************************************************/
4676 static void
e1000_phy_init_script(struct e1000_hw * hw)4677 e1000_phy_init_script(struct e1000_hw *hw)
4678 {
4679 uint32_t ret_val;
4680 uint16_t phy_saved_data;
4681 DEBUGFUNC();
4682
4683 if (hw->phy_init_script) {
4684 mdelay(20);
4685
4686 /* Save off the current value of register 0x2F5B to be
4687 * restored at the end of this routine. */
4688 ret_val = e1000_read_phy_reg(hw, 0x2F5B, &phy_saved_data);
4689
4690 /* Disabled the PHY transmitter */
4691 e1000_write_phy_reg(hw, 0x2F5B, 0x0003);
4692
4693 mdelay(20);
4694
4695 e1000_write_phy_reg(hw, 0x0000, 0x0140);
4696
4697 mdelay(5);
4698
4699 switch (hw->mac_type) {
4700 case e1000_82541:
4701 case e1000_82547:
4702 e1000_write_phy_reg(hw, 0x1F95, 0x0001);
4703
4704 e1000_write_phy_reg(hw, 0x1F71, 0xBD21);
4705
4706 e1000_write_phy_reg(hw, 0x1F79, 0x0018);
4707
4708 e1000_write_phy_reg(hw, 0x1F30, 0x1600);
4709
4710 e1000_write_phy_reg(hw, 0x1F31, 0x0014);
4711
4712 e1000_write_phy_reg(hw, 0x1F32, 0x161C);
4713
4714 e1000_write_phy_reg(hw, 0x1F94, 0x0003);
4715
4716 e1000_write_phy_reg(hw, 0x1F96, 0x003F);
4717
4718 e1000_write_phy_reg(hw, 0x2010, 0x0008);
4719 break;
4720
4721 case e1000_82541_rev_2:
4722 case e1000_82547_rev_2:
4723 e1000_write_phy_reg(hw, 0x1F73, 0x0099);
4724 break;
4725 default:
4726 break;
4727 }
4728
4729 e1000_write_phy_reg(hw, 0x0000, 0x3300);
4730
4731 mdelay(20);
4732
4733 /* Now enable the transmitter */
4734 if (!ret_val)
4735 e1000_write_phy_reg(hw, 0x2F5B, phy_saved_data);
4736
4737 if (hw->mac_type == e1000_82547) {
4738 uint16_t fused, fine, coarse;
4739
4740 /* Move to analog registers page */
4741 e1000_read_phy_reg(hw,
4742 IGP01E1000_ANALOG_SPARE_FUSE_STATUS, &fused);
4743
4744 if (!(fused & IGP01E1000_ANALOG_SPARE_FUSE_ENABLED)) {
4745 e1000_read_phy_reg(hw,
4746 IGP01E1000_ANALOG_FUSE_STATUS, &fused);
4747
4748 fine = fused & IGP01E1000_ANALOG_FUSE_FINE_MASK;
4749 coarse = fused
4750 & IGP01E1000_ANALOG_FUSE_COARSE_MASK;
4751
4752 if (coarse >
4753 IGP01E1000_ANALOG_FUSE_COARSE_THRESH) {
4754 coarse -=
4755 IGP01E1000_ANALOG_FUSE_COARSE_10;
4756 fine -= IGP01E1000_ANALOG_FUSE_FINE_1;
4757 } else if (coarse
4758 == IGP01E1000_ANALOG_FUSE_COARSE_THRESH)
4759 fine -= IGP01E1000_ANALOG_FUSE_FINE_10;
4760
4761 fused = (fused
4762 & IGP01E1000_ANALOG_FUSE_POLY_MASK) |
4763 (fine
4764 & IGP01E1000_ANALOG_FUSE_FINE_MASK) |
4765 (coarse
4766 & IGP01E1000_ANALOG_FUSE_COARSE_MASK);
4767
4768 e1000_write_phy_reg(hw,
4769 IGP01E1000_ANALOG_FUSE_CONTROL, fused);
4770 e1000_write_phy_reg(hw,
4771 IGP01E1000_ANALOG_FUSE_BYPASS,
4772 IGP01E1000_ANALOG_FUSE_ENABLE_SW_CONTROL);
4773 }
4774 }
4775 }
4776 }
4777
4778 /******************************************************************************
4779 * Resets the PHY
4780 *
4781 * hw - Struct containing variables accessed by shared code
4782 *
4783 * Sets bit 15 of the MII Control register
4784 ******************************************************************************/
4785 int32_t
e1000_phy_reset(struct e1000_hw * hw)4786 e1000_phy_reset(struct e1000_hw *hw)
4787 {
4788 int32_t ret_val;
4789 uint16_t phy_data;
4790
4791 DEBUGFUNC();
4792
4793 /* In the case of the phy reset being blocked, it's not an error, we
4794 * simply return success without performing the reset. */
4795 ret_val = e1000_check_phy_reset_block(hw);
4796 if (ret_val)
4797 return E1000_SUCCESS;
4798
4799 switch (hw->phy_type) {
4800 case e1000_phy_igp:
4801 case e1000_phy_igp_2:
4802 case e1000_phy_igp_3:
4803 case e1000_phy_ife:
4804 case e1000_phy_igb:
4805 ret_val = e1000_phy_hw_reset(hw);
4806 if (ret_val)
4807 return ret_val;
4808 break;
4809 default:
4810 ret_val = e1000_read_phy_reg(hw, PHY_CTRL, &phy_data);
4811 if (ret_val)
4812 return ret_val;
4813
4814 phy_data |= MII_CR_RESET;
4815 ret_val = e1000_write_phy_reg(hw, PHY_CTRL, phy_data);
4816 if (ret_val)
4817 return ret_val;
4818
4819 udelay(1);
4820 break;
4821 }
4822
4823 if (hw->phy_type == e1000_phy_igp || hw->phy_type == e1000_phy_igp_2)
4824 e1000_phy_init_script(hw);
4825
4826 return E1000_SUCCESS;
4827 }
4828
e1000_set_phy_type(struct e1000_hw * hw)4829 static int e1000_set_phy_type (struct e1000_hw *hw)
4830 {
4831 DEBUGFUNC ();
4832
4833 if (hw->mac_type == e1000_undefined)
4834 return -E1000_ERR_PHY_TYPE;
4835
4836 switch (hw->phy_id) {
4837 case M88E1000_E_PHY_ID:
4838 case M88E1000_I_PHY_ID:
4839 case M88E1011_I_PHY_ID:
4840 case M88E1111_I_PHY_ID:
4841 hw->phy_type = e1000_phy_m88;
4842 break;
4843 case IGP01E1000_I_PHY_ID:
4844 if (hw->mac_type == e1000_82541 ||
4845 hw->mac_type == e1000_82541_rev_2 ||
4846 hw->mac_type == e1000_82547 ||
4847 hw->mac_type == e1000_82547_rev_2) {
4848 hw->phy_type = e1000_phy_igp;
4849 break;
4850 }
4851 case IGP03E1000_E_PHY_ID:
4852 hw->phy_type = e1000_phy_igp_3;
4853 break;
4854 case IFE_E_PHY_ID:
4855 case IFE_PLUS_E_PHY_ID:
4856 case IFE_C_E_PHY_ID:
4857 hw->phy_type = e1000_phy_ife;
4858 break;
4859 case GG82563_E_PHY_ID:
4860 if (hw->mac_type == e1000_80003es2lan) {
4861 hw->phy_type = e1000_phy_gg82563;
4862 break;
4863 }
4864 case BME1000_E_PHY_ID:
4865 hw->phy_type = e1000_phy_bm;
4866 break;
4867 case I210_I_PHY_ID:
4868 hw->phy_type = e1000_phy_igb;
4869 break;
4870 /* Fall Through */
4871 default:
4872 /* Should never have loaded on this device */
4873 hw->phy_type = e1000_phy_undefined;
4874 return -E1000_ERR_PHY_TYPE;
4875 }
4876
4877 return E1000_SUCCESS;
4878 }
4879
4880 /******************************************************************************
4881 * Probes the expected PHY address for known PHY IDs
4882 *
4883 * hw - Struct containing variables accessed by shared code
4884 ******************************************************************************/
4885 static int32_t
e1000_detect_gig_phy(struct e1000_hw * hw)4886 e1000_detect_gig_phy(struct e1000_hw *hw)
4887 {
4888 int32_t phy_init_status, ret_val;
4889 uint16_t phy_id_high, phy_id_low;
4890 bool match = false;
4891
4892 DEBUGFUNC();
4893
4894 /* The 82571 firmware may still be configuring the PHY. In this
4895 * case, we cannot access the PHY until the configuration is done. So
4896 * we explicitly set the PHY values. */
4897 if (hw->mac_type == e1000_82571 ||
4898 hw->mac_type == e1000_82572) {
4899 hw->phy_id = IGP01E1000_I_PHY_ID;
4900 hw->phy_type = e1000_phy_igp_2;
4901 return E1000_SUCCESS;
4902 }
4903
4904 /* ESB-2 PHY reads require e1000_phy_gg82563 to be set because of a
4905 * work- around that forces PHY page 0 to be set or the reads fail.
4906 * The rest of the code in this routine uses e1000_read_phy_reg to
4907 * read the PHY ID. So for ESB-2 we need to have this set so our
4908 * reads won't fail. If the attached PHY is not a e1000_phy_gg82563,
4909 * the routines below will figure this out as well. */
4910 if (hw->mac_type == e1000_80003es2lan)
4911 hw->phy_type = e1000_phy_gg82563;
4912
4913 /* Read the PHY ID Registers to identify which PHY is onboard. */
4914 ret_val = e1000_read_phy_reg(hw, PHY_ID1, &phy_id_high);
4915 if (ret_val)
4916 return ret_val;
4917
4918 hw->phy_id = (uint32_t) (phy_id_high << 16);
4919 udelay(20);
4920 ret_val = e1000_read_phy_reg(hw, PHY_ID2, &phy_id_low);
4921 if (ret_val)
4922 return ret_val;
4923
4924 hw->phy_id |= (uint32_t) (phy_id_low & PHY_REVISION_MASK);
4925 hw->phy_revision = (uint32_t) phy_id_low & ~PHY_REVISION_MASK;
4926
4927 switch (hw->mac_type) {
4928 case e1000_82543:
4929 if (hw->phy_id == M88E1000_E_PHY_ID)
4930 match = true;
4931 break;
4932 case e1000_82544:
4933 if (hw->phy_id == M88E1000_I_PHY_ID)
4934 match = true;
4935 break;
4936 case e1000_82540:
4937 case e1000_82545:
4938 case e1000_82545_rev_3:
4939 case e1000_82546:
4940 case e1000_82546_rev_3:
4941 if (hw->phy_id == M88E1011_I_PHY_ID)
4942 match = true;
4943 break;
4944 case e1000_82541:
4945 case e1000_82541_rev_2:
4946 case e1000_82547:
4947 case e1000_82547_rev_2:
4948 if(hw->phy_id == IGP01E1000_I_PHY_ID)
4949 match = true;
4950
4951 break;
4952 case e1000_82573:
4953 if (hw->phy_id == M88E1111_I_PHY_ID)
4954 match = true;
4955 break;
4956 case e1000_82574:
4957 if (hw->phy_id == BME1000_E_PHY_ID)
4958 match = true;
4959 break;
4960 case e1000_80003es2lan:
4961 if (hw->phy_id == GG82563_E_PHY_ID)
4962 match = true;
4963 break;
4964 case e1000_ich8lan:
4965 if (hw->phy_id == IGP03E1000_E_PHY_ID)
4966 match = true;
4967 if (hw->phy_id == IFE_E_PHY_ID)
4968 match = true;
4969 if (hw->phy_id == IFE_PLUS_E_PHY_ID)
4970 match = true;
4971 if (hw->phy_id == IFE_C_E_PHY_ID)
4972 match = true;
4973 break;
4974 case e1000_igb:
4975 if (hw->phy_id == I210_I_PHY_ID)
4976 match = true;
4977 break;
4978 default:
4979 DEBUGOUT("Invalid MAC type %d\n", hw->mac_type);
4980 return -E1000_ERR_CONFIG;
4981 }
4982
4983 phy_init_status = e1000_set_phy_type(hw);
4984
4985 if ((match) && (phy_init_status == E1000_SUCCESS)) {
4986 DEBUGOUT("PHY ID 0x%X detected\n", hw->phy_id);
4987 return 0;
4988 }
4989 DEBUGOUT("Invalid PHY ID 0x%X\n", hw->phy_id);
4990 return -E1000_ERR_PHY;
4991 }
4992
4993 /*****************************************************************************
4994 * Set media type and TBI compatibility.
4995 *
4996 * hw - Struct containing variables accessed by shared code
4997 * **************************************************************************/
4998 void
e1000_set_media_type(struct e1000_hw * hw)4999 e1000_set_media_type(struct e1000_hw *hw)
5000 {
5001 uint32_t status;
5002
5003 DEBUGFUNC();
5004
5005 if (hw->mac_type != e1000_82543) {
5006 /* tbi_compatibility is only valid on 82543 */
5007 hw->tbi_compatibility_en = false;
5008 }
5009
5010 switch (hw->device_id) {
5011 case E1000_DEV_ID_82545GM_SERDES:
5012 case E1000_DEV_ID_82546GB_SERDES:
5013 case E1000_DEV_ID_82571EB_SERDES:
5014 case E1000_DEV_ID_82571EB_SERDES_DUAL:
5015 case E1000_DEV_ID_82571EB_SERDES_QUAD:
5016 case E1000_DEV_ID_82572EI_SERDES:
5017 case E1000_DEV_ID_80003ES2LAN_SERDES_DPT:
5018 hw->media_type = e1000_media_type_internal_serdes;
5019 break;
5020 default:
5021 switch (hw->mac_type) {
5022 case e1000_82542_rev2_0:
5023 case e1000_82542_rev2_1:
5024 hw->media_type = e1000_media_type_fiber;
5025 break;
5026 case e1000_ich8lan:
5027 case e1000_82573:
5028 case e1000_82574:
5029 case e1000_igb:
5030 /* The STATUS_TBIMODE bit is reserved or reused
5031 * for the this device.
5032 */
5033 hw->media_type = e1000_media_type_copper;
5034 break;
5035 default:
5036 status = E1000_READ_REG(hw, STATUS);
5037 if (status & E1000_STATUS_TBIMODE) {
5038 hw->media_type = e1000_media_type_fiber;
5039 /* tbi_compatibility not valid on fiber */
5040 hw->tbi_compatibility_en = false;
5041 } else {
5042 hw->media_type = e1000_media_type_copper;
5043 }
5044 break;
5045 }
5046 }
5047 }
5048
5049 /**
5050 * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
5051 *
5052 * e1000_sw_init initializes the Adapter private data structure.
5053 * Fields are initialized based on PCI device information and
5054 * OS network device settings (MTU size).
5055 **/
5056
5057 static int
e1000_sw_init(struct e1000_hw * hw)5058 e1000_sw_init(struct e1000_hw *hw)
5059 {
5060 int result;
5061
5062 /* PCI config space info */
5063 #ifdef CONFIG_DM_ETH
5064 dm_pci_read_config16(hw->pdev, PCI_VENDOR_ID, &hw->vendor_id);
5065 dm_pci_read_config16(hw->pdev, PCI_DEVICE_ID, &hw->device_id);
5066 dm_pci_read_config16(hw->pdev, PCI_SUBSYSTEM_VENDOR_ID,
5067 &hw->subsystem_vendor_id);
5068 dm_pci_read_config16(hw->pdev, PCI_SUBSYSTEM_ID, &hw->subsystem_id);
5069
5070 dm_pci_read_config8(hw->pdev, PCI_REVISION_ID, &hw->revision_id);
5071 dm_pci_read_config16(hw->pdev, PCI_COMMAND, &hw->pci_cmd_word);
5072 #else
5073 pci_read_config_word(hw->pdev, PCI_VENDOR_ID, &hw->vendor_id);
5074 pci_read_config_word(hw->pdev, PCI_DEVICE_ID, &hw->device_id);
5075 pci_read_config_word(hw->pdev, PCI_SUBSYSTEM_VENDOR_ID,
5076 &hw->subsystem_vendor_id);
5077 pci_read_config_word(hw->pdev, PCI_SUBSYSTEM_ID, &hw->subsystem_id);
5078
5079 pci_read_config_byte(hw->pdev, PCI_REVISION_ID, &hw->revision_id);
5080 pci_read_config_word(hw->pdev, PCI_COMMAND, &hw->pci_cmd_word);
5081 #endif
5082
5083 /* identify the MAC */
5084 result = e1000_set_mac_type(hw);
5085 if (result) {
5086 E1000_ERR(hw, "Unknown MAC Type\n");
5087 return result;
5088 }
5089
5090 switch (hw->mac_type) {
5091 default:
5092 break;
5093 case e1000_82541:
5094 case e1000_82547:
5095 case e1000_82541_rev_2:
5096 case e1000_82547_rev_2:
5097 hw->phy_init_script = 1;
5098 break;
5099 }
5100
5101 /* flow control settings */
5102 hw->fc_high_water = E1000_FC_HIGH_THRESH;
5103 hw->fc_low_water = E1000_FC_LOW_THRESH;
5104 hw->fc_pause_time = E1000_FC_PAUSE_TIME;
5105 hw->fc_send_xon = 1;
5106
5107 /* Media type - copper or fiber */
5108 hw->tbi_compatibility_en = true;
5109 e1000_set_media_type(hw);
5110
5111 if (hw->mac_type >= e1000_82543) {
5112 uint32_t status = E1000_READ_REG(hw, STATUS);
5113
5114 if (status & E1000_STATUS_TBIMODE) {
5115 DEBUGOUT("fiber interface\n");
5116 hw->media_type = e1000_media_type_fiber;
5117 } else {
5118 DEBUGOUT("copper interface\n");
5119 hw->media_type = e1000_media_type_copper;
5120 }
5121 } else {
5122 hw->media_type = e1000_media_type_fiber;
5123 }
5124
5125 hw->wait_autoneg_complete = true;
5126 if (hw->mac_type < e1000_82543)
5127 hw->report_tx_early = 0;
5128 else
5129 hw->report_tx_early = 1;
5130
5131 return E1000_SUCCESS;
5132 }
5133
5134 void
fill_rx(struct e1000_hw * hw)5135 fill_rx(struct e1000_hw *hw)
5136 {
5137 struct e1000_rx_desc *rd;
5138 unsigned long flush_start, flush_end;
5139
5140 rx_last = rx_tail;
5141 rd = rx_base + rx_tail;
5142 rx_tail = (rx_tail + 1) % 8;
5143 memset(rd, 0, 16);
5144 rd->buffer_addr = cpu_to_le64(virt_to_phys(packet));
5145
5146 /*
5147 * Make sure there are no stale data in WB over this area, which
5148 * might get written into the memory while the e1000 also writes
5149 * into the same memory area.
5150 */
5151 invalidate_dcache_range((unsigned long)packet,
5152 (unsigned long)packet + 4096);
5153 /* Dump the DMA descriptor into RAM. */
5154 flush_start = ((unsigned long)rd) & ~(ARCH_DMA_MINALIGN - 1);
5155 flush_end = flush_start + roundup(sizeof(*rd), ARCH_DMA_MINALIGN);
5156 flush_dcache_range(flush_start, flush_end);
5157
5158 E1000_WRITE_REG(hw, RDT, rx_tail);
5159 }
5160
5161 /**
5162 * e1000_configure_tx - Configure 8254x Transmit Unit after Reset
5163 * @adapter: board private structure
5164 *
5165 * Configure the Tx unit of the MAC after a reset.
5166 **/
5167
5168 static void
e1000_configure_tx(struct e1000_hw * hw)5169 e1000_configure_tx(struct e1000_hw *hw)
5170 {
5171 unsigned long tctl;
5172 unsigned long tipg, tarc;
5173 uint32_t ipgr1, ipgr2;
5174
5175 E1000_WRITE_REG(hw, TDBAL, lower_32_bits(virt_to_phys(tx_base)));
5176 E1000_WRITE_REG(hw, TDBAH, upper_32_bits(virt_to_phys(tx_base)));
5177
5178 E1000_WRITE_REG(hw, TDLEN, 128);
5179
5180 /* Setup the HW Tx Head and Tail descriptor pointers */
5181 E1000_WRITE_REG(hw, TDH, 0);
5182 E1000_WRITE_REG(hw, TDT, 0);
5183 tx_tail = 0;
5184
5185 /* Set the default values for the Tx Inter Packet Gap timer */
5186 if (hw->mac_type <= e1000_82547_rev_2 &&
5187 (hw->media_type == e1000_media_type_fiber ||
5188 hw->media_type == e1000_media_type_internal_serdes))
5189 tipg = DEFAULT_82543_TIPG_IPGT_FIBER;
5190 else
5191 tipg = DEFAULT_82543_TIPG_IPGT_COPPER;
5192
5193 /* Set the default values for the Tx Inter Packet Gap timer */
5194 switch (hw->mac_type) {
5195 case e1000_82542_rev2_0:
5196 case e1000_82542_rev2_1:
5197 tipg = DEFAULT_82542_TIPG_IPGT;
5198 ipgr1 = DEFAULT_82542_TIPG_IPGR1;
5199 ipgr2 = DEFAULT_82542_TIPG_IPGR2;
5200 break;
5201 case e1000_80003es2lan:
5202 ipgr1 = DEFAULT_82543_TIPG_IPGR1;
5203 ipgr2 = DEFAULT_80003ES2LAN_TIPG_IPGR2;
5204 break;
5205 default:
5206 ipgr1 = DEFAULT_82543_TIPG_IPGR1;
5207 ipgr2 = DEFAULT_82543_TIPG_IPGR2;
5208 break;
5209 }
5210 tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT;
5211 tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT;
5212 E1000_WRITE_REG(hw, TIPG, tipg);
5213 /* Program the Transmit Control Register */
5214 tctl = E1000_READ_REG(hw, TCTL);
5215 tctl &= ~E1000_TCTL_CT;
5216 tctl |= E1000_TCTL_EN | E1000_TCTL_PSP |
5217 (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT);
5218
5219 if (hw->mac_type == e1000_82571 || hw->mac_type == e1000_82572) {
5220 tarc = E1000_READ_REG(hw, TARC0);
5221 /* set the speed mode bit, we'll clear it if we're not at
5222 * gigabit link later */
5223 /* git bit can be set to 1*/
5224 } else if (hw->mac_type == e1000_80003es2lan) {
5225 tarc = E1000_READ_REG(hw, TARC0);
5226 tarc |= 1;
5227 E1000_WRITE_REG(hw, TARC0, tarc);
5228 tarc = E1000_READ_REG(hw, TARC1);
5229 tarc |= 1;
5230 E1000_WRITE_REG(hw, TARC1, tarc);
5231 }
5232
5233
5234 e1000_config_collision_dist(hw);
5235 /* Setup Transmit Descriptor Settings for eop descriptor */
5236 hw->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS;
5237
5238 /* Need to set up RS bit */
5239 if (hw->mac_type < e1000_82543)
5240 hw->txd_cmd |= E1000_TXD_CMD_RPS;
5241 else
5242 hw->txd_cmd |= E1000_TXD_CMD_RS;
5243
5244
5245 if (hw->mac_type == e1000_igb) {
5246 E1000_WRITE_REG(hw, TCTL_EXT, 0x42 << 10);
5247
5248 uint32_t reg_txdctl = E1000_READ_REG(hw, TXDCTL);
5249 reg_txdctl |= 1 << 25;
5250 E1000_WRITE_REG(hw, TXDCTL, reg_txdctl);
5251 mdelay(20);
5252 }
5253
5254
5255
5256 E1000_WRITE_REG(hw, TCTL, tctl);
5257
5258
5259 }
5260
5261 /**
5262 * e1000_setup_rctl - configure the receive control register
5263 * @adapter: Board private structure
5264 **/
5265 static void
e1000_setup_rctl(struct e1000_hw * hw)5266 e1000_setup_rctl(struct e1000_hw *hw)
5267 {
5268 uint32_t rctl;
5269
5270 rctl = E1000_READ_REG(hw, RCTL);
5271
5272 rctl &= ~(3 << E1000_RCTL_MO_SHIFT);
5273
5274 rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | E1000_RCTL_LBM_NO
5275 | E1000_RCTL_RDMTS_HALF; /* |
5276 (hw.mc_filter_type << E1000_RCTL_MO_SHIFT); */
5277
5278 if (hw->tbi_compatibility_on == 1)
5279 rctl |= E1000_RCTL_SBP;
5280 else
5281 rctl &= ~E1000_RCTL_SBP;
5282
5283 rctl &= ~(E1000_RCTL_SZ_4096);
5284 rctl |= E1000_RCTL_SZ_2048;
5285 rctl &= ~(E1000_RCTL_BSEX | E1000_RCTL_LPE);
5286 E1000_WRITE_REG(hw, RCTL, rctl);
5287 }
5288
5289 /**
5290 * e1000_configure_rx - Configure 8254x Receive Unit after Reset
5291 * @adapter: board private structure
5292 *
5293 * Configure the Rx unit of the MAC after a reset.
5294 **/
5295 static void
e1000_configure_rx(struct e1000_hw * hw)5296 e1000_configure_rx(struct e1000_hw *hw)
5297 {
5298 unsigned long rctl, ctrl_ext;
5299 rx_tail = 0;
5300
5301 /* make sure receives are disabled while setting up the descriptors */
5302 rctl = E1000_READ_REG(hw, RCTL);
5303 E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN);
5304 if (hw->mac_type >= e1000_82540) {
5305 /* Set the interrupt throttling rate. Value is calculated
5306 * as DEFAULT_ITR = 1/(MAX_INTS_PER_SEC * 256ns) */
5307 #define MAX_INTS_PER_SEC 8000
5308 #define DEFAULT_ITR 1000000000/(MAX_INTS_PER_SEC * 256)
5309 E1000_WRITE_REG(hw, ITR, DEFAULT_ITR);
5310 }
5311
5312 if (hw->mac_type >= e1000_82571) {
5313 ctrl_ext = E1000_READ_REG(hw, CTRL_EXT);
5314 /* Reset delay timers after every interrupt */
5315 ctrl_ext |= E1000_CTRL_EXT_INT_TIMER_CLR;
5316 E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
5317 E1000_WRITE_FLUSH(hw);
5318 }
5319 /* Setup the Base and Length of the Rx Descriptor Ring */
5320 E1000_WRITE_REG(hw, RDBAL, lower_32_bits(virt_to_phys(rx_base)));
5321 E1000_WRITE_REG(hw, RDBAH, upper_32_bits(virt_to_phys(rx_base)));
5322
5323 E1000_WRITE_REG(hw, RDLEN, 128);
5324
5325 /* Setup the HW Rx Head and Tail Descriptor Pointers */
5326 E1000_WRITE_REG(hw, RDH, 0);
5327 E1000_WRITE_REG(hw, RDT, 0);
5328 /* Enable Receives */
5329
5330 if (hw->mac_type == e1000_igb) {
5331
5332 uint32_t reg_rxdctl = E1000_READ_REG(hw, RXDCTL);
5333 reg_rxdctl |= 1 << 25;
5334 E1000_WRITE_REG(hw, RXDCTL, reg_rxdctl);
5335 mdelay(20);
5336 }
5337
5338 E1000_WRITE_REG(hw, RCTL, rctl);
5339
5340 fill_rx(hw);
5341 }
5342
5343 /**************************************************************************
5344 POLL - Wait for a frame
5345 ***************************************************************************/
5346 static int
_e1000_poll(struct e1000_hw * hw)5347 _e1000_poll(struct e1000_hw *hw)
5348 {
5349 struct e1000_rx_desc *rd;
5350 unsigned long inval_start, inval_end;
5351 uint32_t len;
5352
5353 /* return true if there's an ethernet packet ready to read */
5354 rd = rx_base + rx_last;
5355
5356 /* Re-load the descriptor from RAM. */
5357 inval_start = ((unsigned long)rd) & ~(ARCH_DMA_MINALIGN - 1);
5358 inval_end = inval_start + roundup(sizeof(*rd), ARCH_DMA_MINALIGN);
5359 invalidate_dcache_range(inval_start, inval_end);
5360
5361 if (!(rd->status & E1000_RXD_STAT_DD))
5362 return 0;
5363 /* DEBUGOUT("recv: packet len=%d\n", rd->length); */
5364 /* Packet received, make sure the data are re-loaded from RAM. */
5365 len = le16_to_cpu(rd->length);
5366 invalidate_dcache_range((unsigned long)packet,
5367 (unsigned long)packet +
5368 roundup(len, ARCH_DMA_MINALIGN));
5369 return len;
5370 }
5371
_e1000_transmit(struct e1000_hw * hw,void * txpacket,int length)5372 static int _e1000_transmit(struct e1000_hw *hw, void *txpacket, int length)
5373 {
5374 void *nv_packet = (void *)txpacket;
5375 struct e1000_tx_desc *txp;
5376 int i = 0;
5377 unsigned long flush_start, flush_end;
5378
5379 txp = tx_base + tx_tail;
5380 tx_tail = (tx_tail + 1) % 8;
5381
5382 txp->buffer_addr = cpu_to_le64(virt_to_phys(nv_packet));
5383 txp->lower.data = cpu_to_le32(hw->txd_cmd | length);
5384 txp->upper.data = 0;
5385
5386 /* Dump the packet into RAM so e1000 can pick them. */
5387 flush_dcache_range((unsigned long)nv_packet,
5388 (unsigned long)nv_packet +
5389 roundup(length, ARCH_DMA_MINALIGN));
5390 /* Dump the descriptor into RAM as well. */
5391 flush_start = ((unsigned long)txp) & ~(ARCH_DMA_MINALIGN - 1);
5392 flush_end = flush_start + roundup(sizeof(*txp), ARCH_DMA_MINALIGN);
5393 flush_dcache_range(flush_start, flush_end);
5394
5395 E1000_WRITE_REG(hw, TDT, tx_tail);
5396
5397 E1000_WRITE_FLUSH(hw);
5398 while (1) {
5399 invalidate_dcache_range(flush_start, flush_end);
5400 if (le32_to_cpu(txp->upper.data) & E1000_TXD_STAT_DD)
5401 break;
5402 if (i++ > TOUT_LOOP) {
5403 DEBUGOUT("e1000: tx timeout\n");
5404 return 0;
5405 }
5406 udelay(10); /* give the nic a chance to write to the register */
5407 }
5408 return 1;
5409 }
5410
5411 static void
_e1000_disable(struct e1000_hw * hw)5412 _e1000_disable(struct e1000_hw *hw)
5413 {
5414 /* Turn off the ethernet interface */
5415 E1000_WRITE_REG(hw, RCTL, 0);
5416 E1000_WRITE_REG(hw, TCTL, 0);
5417
5418 /* Clear the transmit ring */
5419 E1000_WRITE_REG(hw, TDH, 0);
5420 E1000_WRITE_REG(hw, TDT, 0);
5421
5422 /* Clear the receive ring */
5423 E1000_WRITE_REG(hw, RDH, 0);
5424 E1000_WRITE_REG(hw, RDT, 0);
5425
5426 mdelay(10);
5427 }
5428
5429 /*reset function*/
5430 static inline int
e1000_reset(struct e1000_hw * hw,unsigned char enetaddr[6])5431 e1000_reset(struct e1000_hw *hw, unsigned char enetaddr[6])
5432 {
5433 e1000_reset_hw(hw);
5434 if (hw->mac_type >= e1000_82544)
5435 E1000_WRITE_REG(hw, WUC, 0);
5436
5437 return e1000_init_hw(hw, enetaddr);
5438 }
5439
5440 static int
_e1000_init(struct e1000_hw * hw,unsigned char enetaddr[6])5441 _e1000_init(struct e1000_hw *hw, unsigned char enetaddr[6])
5442 {
5443 int ret_val = 0;
5444
5445 ret_val = e1000_reset(hw, enetaddr);
5446 if (ret_val < 0) {
5447 if ((ret_val == -E1000_ERR_NOLINK) ||
5448 (ret_val == -E1000_ERR_TIMEOUT)) {
5449 E1000_ERR(hw, "Valid Link not detected: %d\n", ret_val);
5450 } else {
5451 E1000_ERR(hw, "Hardware Initialization Failed\n");
5452 }
5453 return ret_val;
5454 }
5455 e1000_configure_tx(hw);
5456 e1000_setup_rctl(hw);
5457 e1000_configure_rx(hw);
5458 return 0;
5459 }
5460
5461 /******************************************************************************
5462 * Gets the current PCI bus type of hardware
5463 *
5464 * hw - Struct containing variables accessed by shared code
5465 *****************************************************************************/
e1000_get_bus_type(struct e1000_hw * hw)5466 void e1000_get_bus_type(struct e1000_hw *hw)
5467 {
5468 uint32_t status;
5469
5470 switch (hw->mac_type) {
5471 case e1000_82542_rev2_0:
5472 case e1000_82542_rev2_1:
5473 hw->bus_type = e1000_bus_type_pci;
5474 break;
5475 case e1000_82571:
5476 case e1000_82572:
5477 case e1000_82573:
5478 case e1000_82574:
5479 case e1000_80003es2lan:
5480 case e1000_ich8lan:
5481 case e1000_igb:
5482 hw->bus_type = e1000_bus_type_pci_express;
5483 break;
5484 default:
5485 status = E1000_READ_REG(hw, STATUS);
5486 hw->bus_type = (status & E1000_STATUS_PCIX_MODE) ?
5487 e1000_bus_type_pcix : e1000_bus_type_pci;
5488 break;
5489 }
5490 }
5491
5492 #ifndef CONFIG_DM_ETH
5493 /* A list of all registered e1000 devices */
5494 static LIST_HEAD(e1000_hw_list);
5495 #endif
5496
5497 #ifdef CONFIG_DM_ETH
e1000_init_one(struct e1000_hw * hw,int cardnum,struct udevice * devno,unsigned char enetaddr[6])5498 static int e1000_init_one(struct e1000_hw *hw, int cardnum,
5499 struct udevice *devno, unsigned char enetaddr[6])
5500 #else
5501 static int e1000_init_one(struct e1000_hw *hw, int cardnum, pci_dev_t devno,
5502 unsigned char enetaddr[6])
5503 #endif
5504 {
5505 u32 val;
5506
5507 /* Assign the passed-in values */
5508 #ifdef CONFIG_DM_ETH
5509 hw->pdev = devno;
5510 #else
5511 hw->pdev = devno;
5512 #endif
5513 hw->cardnum = cardnum;
5514
5515 /* Print a debug message with the IO base address */
5516 #ifdef CONFIG_DM_ETH
5517 dm_pci_read_config32(devno, PCI_BASE_ADDRESS_0, &val);
5518 #else
5519 pci_read_config_dword(devno, PCI_BASE_ADDRESS_0, &val);
5520 #endif
5521 E1000_DBG(hw, "iobase 0x%08x\n", val & 0xfffffff0);
5522
5523 /* Try to enable I/O accesses and bus-mastering */
5524 val = PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER;
5525 #ifdef CONFIG_DM_ETH
5526 dm_pci_write_config32(devno, PCI_COMMAND, val);
5527 #else
5528 pci_write_config_dword(devno, PCI_COMMAND, val);
5529 #endif
5530
5531 /* Make sure it worked */
5532 #ifdef CONFIG_DM_ETH
5533 dm_pci_read_config32(devno, PCI_COMMAND, &val);
5534 #else
5535 pci_read_config_dword(devno, PCI_COMMAND, &val);
5536 #endif
5537 if (!(val & PCI_COMMAND_MEMORY)) {
5538 E1000_ERR(hw, "Can't enable I/O memory\n");
5539 return -ENOSPC;
5540 }
5541 if (!(val & PCI_COMMAND_MASTER)) {
5542 E1000_ERR(hw, "Can't enable bus-mastering\n");
5543 return -EPERM;
5544 }
5545
5546 /* Are these variables needed? */
5547 hw->fc = e1000_fc_default;
5548 hw->original_fc = e1000_fc_default;
5549 hw->autoneg_failed = 0;
5550 hw->autoneg = 1;
5551 hw->get_link_status = true;
5552 #ifndef CONFIG_E1000_NO_NVM
5553 hw->eeprom_semaphore_present = true;
5554 #endif
5555 #ifdef CONFIG_DM_ETH
5556 hw->hw_addr = dm_pci_map_bar(devno, PCI_BASE_ADDRESS_0,
5557 PCI_REGION_MEM);
5558 #else
5559 hw->hw_addr = pci_map_bar(devno, PCI_BASE_ADDRESS_0,
5560 PCI_REGION_MEM);
5561 #endif
5562 hw->mac_type = e1000_undefined;
5563
5564 /* MAC and Phy settings */
5565 if (e1000_sw_init(hw) < 0) {
5566 E1000_ERR(hw, "Software init failed\n");
5567 return -EIO;
5568 }
5569 if (e1000_check_phy_reset_block(hw))
5570 E1000_ERR(hw, "PHY Reset is blocked!\n");
5571
5572 /* Basic init was OK, reset the hardware and allow SPI access */
5573 e1000_reset_hw(hw);
5574
5575 #ifndef CONFIG_E1000_NO_NVM
5576 /* Validate the EEPROM and get chipset information */
5577 if (e1000_init_eeprom_params(hw)) {
5578 E1000_ERR(hw, "EEPROM is invalid!\n");
5579 return -EINVAL;
5580 }
5581 if ((E1000_READ_REG(hw, I210_EECD) & E1000_EECD_FLUPD) &&
5582 e1000_validate_eeprom_checksum(hw))
5583 return -ENXIO;
5584 e1000_read_mac_addr(hw, enetaddr);
5585 #endif
5586 e1000_get_bus_type(hw);
5587
5588 #ifndef CONFIG_E1000_NO_NVM
5589 printf("e1000: %02x:%02x:%02x:%02x:%02x:%02x\n ",
5590 enetaddr[0], enetaddr[1], enetaddr[2],
5591 enetaddr[3], enetaddr[4], enetaddr[5]);
5592 #else
5593 memset(enetaddr, 0, 6);
5594 printf("e1000: no NVM\n");
5595 #endif
5596
5597 return 0;
5598 }
5599
5600 /* Put the name of a device in a string */
e1000_name(char * str,int cardnum)5601 static void e1000_name(char *str, int cardnum)
5602 {
5603 sprintf(str, "e1000#%u", cardnum);
5604 }
5605
5606 #ifndef CONFIG_DM_ETH
5607 /**************************************************************************
5608 TRANSMIT - Transmit a frame
5609 ***************************************************************************/
e1000_transmit(struct eth_device * nic,void * txpacket,int length)5610 static int e1000_transmit(struct eth_device *nic, void *txpacket, int length)
5611 {
5612 struct e1000_hw *hw = nic->priv;
5613
5614 return _e1000_transmit(hw, txpacket, length);
5615 }
5616
5617 /**************************************************************************
5618 DISABLE - Turn off ethernet interface
5619 ***************************************************************************/
5620 static void
e1000_disable(struct eth_device * nic)5621 e1000_disable(struct eth_device *nic)
5622 {
5623 struct e1000_hw *hw = nic->priv;
5624
5625 _e1000_disable(hw);
5626 }
5627
5628 /**************************************************************************
5629 INIT - set up ethernet interface(s)
5630 ***************************************************************************/
5631 static int
e1000_init(struct eth_device * nic,struct bd_info * bis)5632 e1000_init(struct eth_device *nic, struct bd_info *bis)
5633 {
5634 struct e1000_hw *hw = nic->priv;
5635
5636 return _e1000_init(hw, nic->enetaddr);
5637 }
5638
5639 static int
e1000_poll(struct eth_device * nic)5640 e1000_poll(struct eth_device *nic)
5641 {
5642 struct e1000_hw *hw = nic->priv;
5643 int len;
5644
5645 len = _e1000_poll(hw);
5646 if (len) {
5647 net_process_received_packet((uchar *)packet, len);
5648 fill_rx(hw);
5649 }
5650
5651 return len ? 1 : 0;
5652 }
5653 #endif /* !CONFIG_DM_ETH */
5654
5655 #ifdef CONFIG_DM_ETH
e1000_write_hwaddr(struct udevice * dev)5656 static int e1000_write_hwaddr(struct udevice *dev)
5657 #else
5658 static int e1000_write_hwaddr(struct eth_device *dev)
5659 #endif
5660 {
5661 #ifndef CONFIG_E1000_NO_NVM
5662 unsigned char current_mac[6];
5663 #ifdef CONFIG_DM_ETH
5664 struct eth_pdata *plat = dev_get_plat(dev);
5665 struct e1000_hw *hw = dev_get_priv(dev);
5666 u8 *mac = plat->enetaddr;
5667 #else
5668 struct e1000_hw *hw = dev->priv;
5669 u8 *mac = dev->enetaddr;
5670 #endif
5671 uint16_t data[3];
5672 int ret_val, i;
5673
5674 DEBUGOUT("%s: mac=%pM\n", __func__, mac);
5675
5676 if ((hw->eeprom.type == e1000_eeprom_invm) &&
5677 !(E1000_READ_REG(hw, EECD) & E1000_EECD_FLASH_DETECTED_I210))
5678 return -ENOSYS;
5679
5680 memset(current_mac, 0, 6);
5681
5682 /* Read from EEPROM, not from registers, to make sure
5683 * the address is persistently configured
5684 */
5685 ret_val = e1000_read_mac_addr_from_eeprom(hw, current_mac);
5686 DEBUGOUT("%s: current mac=%pM\n", __func__, current_mac);
5687
5688 /* Only write to EEPROM if the given address is different or
5689 * reading the current address failed
5690 */
5691 if (!ret_val && memcmp(current_mac, mac, 6) == 0)
5692 return 0;
5693
5694 for (i = 0; i < 3; ++i)
5695 data[i] = mac[i * 2 + 1] << 8 | mac[i * 2];
5696
5697 ret_val = e1000_write_eeprom_srwr(hw, 0x0, 3, data);
5698
5699 if (!ret_val)
5700 ret_val = e1000_update_eeprom_checksum_i210(hw);
5701
5702 return ret_val;
5703 #else
5704 return 0;
5705 #endif
5706 }
5707
5708 #ifndef CONFIG_DM_ETH
5709 /**************************************************************************
5710 PROBE - Look for an adapter, this routine's visible to the outside
5711 You should omit the last argument struct pci_device * for a non-PCI NIC
5712 ***************************************************************************/
5713 int
e1000_initialize(struct bd_info * bis)5714 e1000_initialize(struct bd_info * bis)
5715 {
5716 unsigned int i;
5717 pci_dev_t devno;
5718 int ret;
5719
5720 DEBUGFUNC();
5721
5722 /* Find and probe all the matching PCI devices */
5723 for (i = 0; (devno = pci_find_devices(e1000_supported, i)) >= 0; i++) {
5724 /*
5725 * These will never get freed due to errors, this allows us to
5726 * perform SPI EEPROM programming from U-Boot, for example.
5727 */
5728 struct eth_device *nic = malloc(sizeof(*nic));
5729 struct e1000_hw *hw = malloc(sizeof(*hw));
5730 if (!nic || !hw) {
5731 printf("e1000#%u: Out of Memory!\n", i);
5732 free(nic);
5733 free(hw);
5734 continue;
5735 }
5736
5737 /* Make sure all of the fields are initially zeroed */
5738 memset(nic, 0, sizeof(*nic));
5739 memset(hw, 0, sizeof(*hw));
5740 nic->priv = hw;
5741
5742 /* Generate a card name */
5743 e1000_name(nic->name, i);
5744 hw->name = nic->name;
5745
5746 ret = e1000_init_one(hw, i, devno, nic->enetaddr);
5747 if (ret)
5748 continue;
5749 list_add_tail(&hw->list_node, &e1000_hw_list);
5750
5751 hw->nic = nic;
5752
5753 /* Set up the function pointers and register the device */
5754 nic->init = e1000_init;
5755 nic->recv = e1000_poll;
5756 nic->send = e1000_transmit;
5757 nic->halt = e1000_disable;
5758 nic->write_hwaddr = e1000_write_hwaddr;
5759 eth_register(nic);
5760 }
5761
5762 return i;
5763 }
5764
e1000_find_card(unsigned int cardnum)5765 struct e1000_hw *e1000_find_card(unsigned int cardnum)
5766 {
5767 struct e1000_hw *hw;
5768
5769 list_for_each_entry(hw, &e1000_hw_list, list_node)
5770 if (hw->cardnum == cardnum)
5771 return hw;
5772
5773 return NULL;
5774 }
5775 #endif /* !CONFIG_DM_ETH */
5776
5777 #ifdef CONFIG_CMD_E1000
do_e1000(struct cmd_tbl * cmdtp,int flag,int argc,char * const argv[])5778 static int do_e1000(struct cmd_tbl *cmdtp, int flag, int argc,
5779 char *const argv[])
5780 {
5781 unsigned char *mac = NULL;
5782 #ifdef CONFIG_DM_ETH
5783 struct eth_pdata *plat;
5784 struct udevice *dev;
5785 char name[30];
5786 int ret;
5787 #endif
5788 #if !defined(CONFIG_DM_ETH) || defined(CONFIG_E1000_SPI)
5789 struct e1000_hw *hw;
5790 #endif
5791 int cardnum;
5792
5793 if (argc < 3) {
5794 cmd_usage(cmdtp);
5795 return 1;
5796 }
5797
5798 /* Make sure we can find the requested e1000 card */
5799 cardnum = simple_strtoul(argv[1], NULL, 10);
5800 #ifdef CONFIG_DM_ETH
5801 e1000_name(name, cardnum);
5802 ret = uclass_get_device_by_name(UCLASS_ETH, name, &dev);
5803 if (!ret) {
5804 plat = dev_get_plat(dev);
5805 mac = plat->enetaddr;
5806 }
5807 #else
5808 hw = e1000_find_card(cardnum);
5809 if (hw)
5810 mac = hw->nic->enetaddr;
5811 #endif
5812 if (!mac) {
5813 printf("e1000: ERROR: No such device: e1000#%s\n", argv[1]);
5814 return 1;
5815 }
5816
5817 if (!strcmp(argv[2], "print-mac-address")) {
5818 printf("%02x:%02x:%02x:%02x:%02x:%02x\n",
5819 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
5820 return 0;
5821 }
5822
5823 #ifdef CONFIG_E1000_SPI
5824 #ifdef CONFIG_DM_ETH
5825 hw = dev_get_priv(dev);
5826 #endif
5827 /* Handle the "SPI" subcommand */
5828 if (!strcmp(argv[2], "spi"))
5829 return do_e1000_spi(cmdtp, hw, argc - 3, argv + 3);
5830 #endif
5831
5832 cmd_usage(cmdtp);
5833 return 1;
5834 }
5835
5836 U_BOOT_CMD(
5837 e1000, 7, 0, do_e1000,
5838 "Intel e1000 controller management",
5839 /* */"<card#> print-mac-address\n"
5840 #ifdef CONFIG_E1000_SPI
5841 "e1000 <card#> spi show [<offset> [<length>]]\n"
5842 "e1000 <card#> spi dump <addr> <offset> <length>\n"
5843 "e1000 <card#> spi program <addr> <offset> <length>\n"
5844 "e1000 <card#> spi checksum [update]\n"
5845 #endif
5846 " - Manage the Intel E1000 PCI device"
5847 );
5848 #endif /* not CONFIG_CMD_E1000 */
5849
5850 #ifdef CONFIG_DM_ETH
e1000_eth_start(struct udevice * dev)5851 static int e1000_eth_start(struct udevice *dev)
5852 {
5853 struct eth_pdata *plat = dev_get_plat(dev);
5854 struct e1000_hw *hw = dev_get_priv(dev);
5855
5856 return _e1000_init(hw, plat->enetaddr);
5857 }
5858
e1000_eth_stop(struct udevice * dev)5859 static void e1000_eth_stop(struct udevice *dev)
5860 {
5861 struct e1000_hw *hw = dev_get_priv(dev);
5862
5863 _e1000_disable(hw);
5864 }
5865
e1000_eth_send(struct udevice * dev,void * packet,int length)5866 static int e1000_eth_send(struct udevice *dev, void *packet, int length)
5867 {
5868 struct e1000_hw *hw = dev_get_priv(dev);
5869 int ret;
5870
5871 ret = _e1000_transmit(hw, packet, length);
5872
5873 return ret ? 0 : -ETIMEDOUT;
5874 }
5875
e1000_eth_recv(struct udevice * dev,int flags,uchar ** packetp)5876 static int e1000_eth_recv(struct udevice *dev, int flags, uchar **packetp)
5877 {
5878 struct e1000_hw *hw = dev_get_priv(dev);
5879 int len;
5880
5881 len = _e1000_poll(hw);
5882 if (len)
5883 *packetp = packet;
5884
5885 return len ? len : -EAGAIN;
5886 }
5887
e1000_free_pkt(struct udevice * dev,uchar * packet,int length)5888 static int e1000_free_pkt(struct udevice *dev, uchar *packet, int length)
5889 {
5890 struct e1000_hw *hw = dev_get_priv(dev);
5891
5892 fill_rx(hw);
5893
5894 return 0;
5895 }
5896
e1000_eth_probe(struct udevice * dev)5897 static int e1000_eth_probe(struct udevice *dev)
5898 {
5899 struct eth_pdata *plat = dev_get_plat(dev);
5900 struct e1000_hw *hw = dev_get_priv(dev);
5901 int ret;
5902
5903 hw->name = dev->name;
5904 ret = e1000_init_one(hw, trailing_strtol(dev->name),
5905 dev, plat->enetaddr);
5906 if (ret < 0) {
5907 printf(pr_fmt("failed to initialize card: %d\n"), ret);
5908 return ret;
5909 }
5910
5911 return 0;
5912 }
5913
e1000_eth_bind(struct udevice * dev)5914 static int e1000_eth_bind(struct udevice *dev)
5915 {
5916 char name[20];
5917
5918 /*
5919 * A simple way to number the devices. When device tree is used this
5920 * is unnecessary, but when the device is just discovered on the PCI
5921 * bus we need a name. We could instead have the uclass figure out
5922 * which devices are different and number them.
5923 */
5924 e1000_name(name, num_cards++);
5925
5926 return device_set_name(dev, name);
5927 }
5928
5929 static const struct eth_ops e1000_eth_ops = {
5930 .start = e1000_eth_start,
5931 .send = e1000_eth_send,
5932 .recv = e1000_eth_recv,
5933 .stop = e1000_eth_stop,
5934 .free_pkt = e1000_free_pkt,
5935 .write_hwaddr = e1000_write_hwaddr,
5936 };
5937
5938 static const struct udevice_id e1000_eth_ids[] = {
5939 { .compatible = "intel,e1000" },
5940 { }
5941 };
5942
5943 U_BOOT_DRIVER(eth_e1000) = {
5944 .name = "eth_e1000",
5945 .id = UCLASS_ETH,
5946 .of_match = e1000_eth_ids,
5947 .bind = e1000_eth_bind,
5948 .probe = e1000_eth_probe,
5949 .ops = &e1000_eth_ops,
5950 .priv_auto = sizeof(struct e1000_hw),
5951 .plat_auto = sizeof(struct eth_pdata),
5952 };
5953
5954 U_BOOT_PCI_DEVICE(eth_e1000, e1000_supported);
5955 #endif
5956