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43250ddd JY |
1 | /* |
2 | * Copyright(c) 2007 Atheros Corporation. All rights reserved. | |
3 | * | |
4 | * Derived from Intel e1000 driver | |
5 | * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved. | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the Free | |
9 | * Software Foundation; either version 2 of the License, or (at your option) | |
10 | * any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
13 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
15 | * more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along with | |
18 | * this program; if not, write to the Free Software Foundation, Inc., 59 | |
19 | * Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
20 | */ | |
21 | #include <linux/pci.h> | |
22 | #include <linux/delay.h> | |
23 | #include <linux/mii.h> | |
24 | #include <linux/crc32.h> | |
25 | ||
26 | #include "atl1c.h" | |
27 | ||
28 | /* | |
29 | * check_eeprom_exist | |
30 | * return 1 if eeprom exist | |
31 | */ | |
32 | int atl1c_check_eeprom_exist(struct atl1c_hw *hw) | |
33 | { | |
34 | u32 data; | |
35 | ||
36 | AT_READ_REG(hw, REG_TWSI_DEBUG, &data); | |
37 | if (data & TWSI_DEBUG_DEV_EXIST) | |
38 | return 1; | |
39 | ||
40 | return 0; | |
41 | } | |
42 | ||
43 | void atl1c_hw_set_mac_addr(struct atl1c_hw *hw) | |
44 | { | |
45 | u32 value; | |
46 | /* | |
47 | * 00-0B-6A-F6-00-DC | |
48 | * 0: 6AF600DC 1: 000B | |
49 | * low dword | |
50 | */ | |
51 | value = (((u32)hw->mac_addr[2]) << 24) | | |
52 | (((u32)hw->mac_addr[3]) << 16) | | |
53 | (((u32)hw->mac_addr[4]) << 8) | | |
54 | (((u32)hw->mac_addr[5])) ; | |
55 | AT_WRITE_REG_ARRAY(hw, REG_MAC_STA_ADDR, 0, value); | |
56 | /* hight dword */ | |
57 | value = (((u32)hw->mac_addr[0]) << 8) | | |
58 | (((u32)hw->mac_addr[1])) ; | |
59 | AT_WRITE_REG_ARRAY(hw, REG_MAC_STA_ADDR, 1, value); | |
60 | } | |
61 | ||
62 | /* | |
63 | * atl1c_get_permanent_address | |
64 | * return 0 if get valid mac address, | |
65 | */ | |
66 | static int atl1c_get_permanent_address(struct atl1c_hw *hw) | |
67 | { | |
68 | u32 addr[2]; | |
69 | u32 i; | |
70 | u32 otp_ctrl_data; | |
71 | u32 twsi_ctrl_data; | |
72 | u8 eth_addr[ETH_ALEN]; | |
73 | ||
74 | /* init */ | |
75 | addr[0] = addr[1] = 0; | |
76 | AT_READ_REG(hw, REG_OTP_CTRL, &otp_ctrl_data); | |
77 | if (atl1c_check_eeprom_exist(hw)) { | |
78 | /* Enable OTP CLK */ | |
79 | if (!(otp_ctrl_data & OTP_CTRL_CLK_EN)) { | |
80 | otp_ctrl_data |= OTP_CTRL_CLK_EN; | |
81 | AT_WRITE_REG(hw, REG_OTP_CTRL, otp_ctrl_data); | |
82 | AT_WRITE_FLUSH(hw); | |
83 | msleep(1); | |
84 | } | |
85 | ||
86 | AT_READ_REG(hw, REG_TWSI_CTRL, &twsi_ctrl_data); | |
87 | twsi_ctrl_data |= TWSI_CTRL_SW_LDSTART; | |
88 | AT_WRITE_REG(hw, REG_TWSI_CTRL, twsi_ctrl_data); | |
89 | for (i = 0; i < AT_TWSI_EEPROM_TIMEOUT; i++) { | |
90 | msleep(10); | |
91 | AT_READ_REG(hw, REG_TWSI_CTRL, &twsi_ctrl_data); | |
92 | if ((twsi_ctrl_data & TWSI_CTRL_SW_LDSTART) == 0) | |
93 | break; | |
94 | } | |
95 | if (i >= AT_TWSI_EEPROM_TIMEOUT) | |
96 | return -1; | |
97 | } | |
98 | /* Disable OTP_CLK */ | |
99 | if (otp_ctrl_data & OTP_CTRL_CLK_EN) { | |
100 | otp_ctrl_data &= ~OTP_CTRL_CLK_EN; | |
101 | AT_WRITE_REG(hw, REG_OTP_CTRL, otp_ctrl_data); | |
102 | AT_WRITE_FLUSH(hw); | |
103 | msleep(1); | |
104 | } | |
105 | ||
106 | /* maybe MAC-address is from BIOS */ | |
107 | AT_READ_REG(hw, REG_MAC_STA_ADDR, &addr[0]); | |
108 | AT_READ_REG(hw, REG_MAC_STA_ADDR + 4, &addr[1]); | |
109 | *(u32 *) ð_addr[2] = swab32(addr[0]); | |
110 | *(u16 *) ð_addr[0] = swab16(*(u16 *)&addr[1]); | |
111 | ||
112 | if (is_valid_ether_addr(eth_addr)) { | |
113 | memcpy(hw->perm_mac_addr, eth_addr, ETH_ALEN); | |
114 | return 0; | |
115 | } | |
116 | ||
117 | return -1; | |
118 | } | |
119 | ||
120 | bool atl1c_read_eeprom(struct atl1c_hw *hw, u32 offset, u32 *p_value) | |
121 | { | |
122 | int i; | |
123 | int ret = false; | |
124 | u32 otp_ctrl_data; | |
125 | u32 control; | |
126 | u32 data; | |
127 | ||
128 | if (offset & 3) | |
129 | return ret; /* address do not align */ | |
130 | ||
131 | AT_READ_REG(hw, REG_OTP_CTRL, &otp_ctrl_data); | |
132 | if (!(otp_ctrl_data & OTP_CTRL_CLK_EN)) | |
133 | AT_WRITE_REG(hw, REG_OTP_CTRL, | |
134 | (otp_ctrl_data | OTP_CTRL_CLK_EN)); | |
135 | ||
136 | AT_WRITE_REG(hw, REG_EEPROM_DATA_LO, 0); | |
137 | control = (offset & EEPROM_CTRL_ADDR_MASK) << EEPROM_CTRL_ADDR_SHIFT; | |
138 | AT_WRITE_REG(hw, REG_EEPROM_CTRL, control); | |
139 | ||
140 | for (i = 0; i < 10; i++) { | |
141 | udelay(100); | |
142 | AT_READ_REG(hw, REG_EEPROM_CTRL, &control); | |
143 | if (control & EEPROM_CTRL_RW) | |
144 | break; | |
145 | } | |
146 | if (control & EEPROM_CTRL_RW) { | |
147 | AT_READ_REG(hw, REG_EEPROM_CTRL, &data); | |
148 | AT_READ_REG(hw, REG_EEPROM_DATA_LO, p_value); | |
149 | data = data & 0xFFFF; | |
150 | *p_value = swab32((data << 16) | (*p_value >> 16)); | |
151 | ret = true; | |
152 | } | |
153 | if (!(otp_ctrl_data & OTP_CTRL_CLK_EN)) | |
154 | AT_WRITE_REG(hw, REG_OTP_CTRL, otp_ctrl_data); | |
155 | ||
156 | return ret; | |
157 | } | |
158 | /* | |
159 | * Reads the adapter's MAC address from the EEPROM | |
160 | * | |
161 | * hw - Struct containing variables accessed by shared code | |
162 | */ | |
163 | int atl1c_read_mac_addr(struct atl1c_hw *hw) | |
164 | { | |
165 | int err = 0; | |
166 | ||
167 | err = atl1c_get_permanent_address(hw); | |
168 | if (err) | |
169 | random_ether_addr(hw->perm_mac_addr); | |
170 | ||
171 | memcpy(hw->mac_addr, hw->perm_mac_addr, sizeof(hw->perm_mac_addr)); | |
172 | return 0; | |
173 | } | |
174 | ||
175 | /* | |
176 | * atl1c_hash_mc_addr | |
177 | * purpose | |
178 | * set hash value for a multicast address | |
179 | * hash calcu processing : | |
180 | * 1. calcu 32bit CRC for multicast address | |
181 | * 2. reverse crc with MSB to LSB | |
182 | */ | |
183 | u32 atl1c_hash_mc_addr(struct atl1c_hw *hw, u8 *mc_addr) | |
184 | { | |
185 | u32 crc32; | |
186 | u32 value = 0; | |
187 | int i; | |
188 | ||
189 | crc32 = ether_crc_le(6, mc_addr); | |
190 | for (i = 0; i < 32; i++) | |
191 | value |= (((crc32 >> i) & 1) << (31 - i)); | |
192 | ||
193 | return value; | |
194 | } | |
195 | ||
196 | /* | |
197 | * Sets the bit in the multicast table corresponding to the hash value. | |
198 | * hw - Struct containing variables accessed by shared code | |
199 | * hash_value - Multicast address hash value | |
200 | */ | |
201 | void atl1c_hash_set(struct atl1c_hw *hw, u32 hash_value) | |
202 | { | |
203 | u32 hash_bit, hash_reg; | |
204 | u32 mta; | |
205 | ||
206 | /* | |
207 | * The HASH Table is a register array of 2 32-bit registers. | |
208 | * It is treated like an array of 64 bits. We want to set | |
209 | * bit BitArray[hash_value]. So we figure out what register | |
210 | * the bit is in, read it, OR in the new bit, then write | |
211 | * back the new value. The register is determined by the | |
212 | * upper bit of the hash value and the bit within that | |
213 | * register are determined by the lower 5 bits of the value. | |
214 | */ | |
215 | hash_reg = (hash_value >> 31) & 0x1; | |
216 | hash_bit = (hash_value >> 26) & 0x1F; | |
217 | ||
218 | mta = AT_READ_REG_ARRAY(hw, REG_RX_HASH_TABLE, hash_reg); | |
219 | ||
220 | mta |= (1 << hash_bit); | |
221 | ||
222 | AT_WRITE_REG_ARRAY(hw, REG_RX_HASH_TABLE, hash_reg, mta); | |
223 | } | |
224 | ||
225 | /* | |
226 | * Reads the value from a PHY register | |
227 | * hw - Struct containing variables accessed by shared code | |
228 | * reg_addr - address of the PHY register to read | |
229 | */ | |
230 | int atl1c_read_phy_reg(struct atl1c_hw *hw, u16 reg_addr, u16 *phy_data) | |
231 | { | |
232 | u32 val; | |
233 | int i; | |
234 | ||
235 | val = ((u32)(reg_addr & MDIO_REG_ADDR_MASK)) << MDIO_REG_ADDR_SHIFT | | |
236 | MDIO_START | MDIO_SUP_PREAMBLE | MDIO_RW | | |
237 | MDIO_CLK_25_4 << MDIO_CLK_SEL_SHIFT; | |
238 | ||
239 | AT_WRITE_REG(hw, REG_MDIO_CTRL, val); | |
240 | ||
241 | for (i = 0; i < MDIO_WAIT_TIMES; i++) { | |
242 | udelay(2); | |
243 | AT_READ_REG(hw, REG_MDIO_CTRL, &val); | |
244 | if (!(val & (MDIO_START | MDIO_BUSY))) | |
245 | break; | |
246 | } | |
247 | if (!(val & (MDIO_START | MDIO_BUSY))) { | |
248 | *phy_data = (u16)val; | |
249 | return 0; | |
250 | } | |
251 | ||
252 | return -1; | |
253 | } | |
254 | ||
255 | /* | |
256 | * Writes a value to a PHY register | |
257 | * hw - Struct containing variables accessed by shared code | |
258 | * reg_addr - address of the PHY register to write | |
259 | * data - data to write to the PHY | |
260 | */ | |
261 | int atl1c_write_phy_reg(struct atl1c_hw *hw, u32 reg_addr, u16 phy_data) | |
262 | { | |
263 | int i; | |
264 | u32 val; | |
265 | ||
266 | val = ((u32)(phy_data & MDIO_DATA_MASK)) << MDIO_DATA_SHIFT | | |
267 | (reg_addr & MDIO_REG_ADDR_MASK) << MDIO_REG_ADDR_SHIFT | | |
268 | MDIO_SUP_PREAMBLE | MDIO_START | | |
269 | MDIO_CLK_25_4 << MDIO_CLK_SEL_SHIFT; | |
270 | ||
271 | AT_WRITE_REG(hw, REG_MDIO_CTRL, val); | |
272 | ||
273 | for (i = 0; i < MDIO_WAIT_TIMES; i++) { | |
274 | udelay(2); | |
275 | AT_READ_REG(hw, REG_MDIO_CTRL, &val); | |
276 | if (!(val & (MDIO_START | MDIO_BUSY))) | |
277 | break; | |
278 | } | |
279 | ||
280 | if (!(val & (MDIO_START | MDIO_BUSY))) | |
281 | return 0; | |
282 | ||
283 | return -1; | |
284 | } | |
285 | ||
286 | /* | |
287 | * Configures PHY autoneg and flow control advertisement settings | |
288 | * | |
289 | * hw - Struct containing variables accessed by shared code | |
290 | */ | |
291 | static int atl1c_phy_setup_adv(struct atl1c_hw *hw) | |
292 | { | |
293 | u16 mii_adv_data = ADVERTISE_DEFAULT_CAP & ~ADVERTISE_SPEED_MASK; | |
294 | u16 mii_giga_ctrl_data = GIGA_CR_1000T_DEFAULT_CAP & | |
295 | ~GIGA_CR_1000T_SPEED_MASK; | |
296 | ||
297 | if (hw->autoneg_advertised & ADVERTISED_10baseT_Half) | |
298 | mii_adv_data |= ADVERTISE_10HALF; | |
299 | if (hw->autoneg_advertised & ADVERTISED_10baseT_Full) | |
300 | mii_adv_data |= ADVERTISE_10FULL; | |
301 | if (hw->autoneg_advertised & ADVERTISED_100baseT_Half) | |
302 | mii_adv_data |= ADVERTISE_100HALF; | |
303 | if (hw->autoneg_advertised & ADVERTISED_100baseT_Full) | |
304 | mii_adv_data |= ADVERTISE_100FULL; | |
305 | ||
306 | if (hw->autoneg_advertised & ADVERTISED_Autoneg) | |
307 | mii_adv_data |= ADVERTISE_10HALF | ADVERTISE_10FULL | | |
308 | ADVERTISE_100HALF | ADVERTISE_100FULL; | |
309 | ||
310 | if (hw->ctrl_flags & ATL1C_LINK_CAP_1000M) { | |
311 | if (hw->autoneg_advertised & ADVERTISED_1000baseT_Half) | |
312 | mii_giga_ctrl_data |= ADVERTISE_1000HALF; | |
313 | if (hw->autoneg_advertised & ADVERTISED_1000baseT_Full) | |
314 | mii_giga_ctrl_data |= ADVERTISE_1000FULL; | |
315 | if (hw->autoneg_advertised & ADVERTISED_Autoneg) | |
316 | mii_giga_ctrl_data |= ADVERTISE_1000HALF | | |
317 | ADVERTISE_1000FULL; | |
318 | } | |
319 | ||
320 | if (atl1c_write_phy_reg(hw, MII_ADVERTISE, mii_adv_data) != 0 || | |
321 | atl1c_write_phy_reg(hw, MII_GIGA_CR, mii_giga_ctrl_data) != 0) | |
322 | return -1; | |
323 | return 0; | |
324 | } | |
325 | ||
326 | void atl1c_phy_disable(struct atl1c_hw *hw) | |
327 | { | |
328 | AT_WRITE_REGW(hw, REG_GPHY_CTRL, | |
329 | GPHY_CTRL_PW_WOL_DIS | GPHY_CTRL_EXT_RESET); | |
330 | } | |
331 | ||
332 | static void atl1c_phy_magic_data(struct atl1c_hw *hw) | |
333 | { | |
334 | u16 data; | |
335 | ||
336 | data = ANA_LOOP_SEL_10BT | ANA_EN_MASK_TB | ANA_EN_10BT_IDLE | | |
337 | ((1 & ANA_INTERVAL_SEL_TIMER_MASK) << | |
338 | ANA_INTERVAL_SEL_TIMER_SHIFT); | |
339 | ||
340 | atl1c_write_phy_reg(hw, MII_DBG_ADDR, MII_ANA_CTRL_18); | |
341 | atl1c_write_phy_reg(hw, MII_DBG_DATA, data); | |
342 | ||
343 | data = (2 & ANA_SERDES_CDR_BW_MASK) | ANA_MS_PAD_DBG | | |
344 | ANA_SERDES_EN_DEEM | ANA_SERDES_SEL_HSP | ANA_SERDES_EN_PLL | | |
345 | ANA_SERDES_EN_LCKDT; | |
346 | ||
347 | atl1c_write_phy_reg(hw, MII_DBG_ADDR, MII_ANA_CTRL_5); | |
348 | atl1c_write_phy_reg(hw, MII_DBG_DATA, data); | |
349 | ||
350 | data = (44 & ANA_LONG_CABLE_TH_100_MASK) | | |
351 | ((33 & ANA_SHORT_CABLE_TH_100_MASK) << | |
352 | ANA_SHORT_CABLE_TH_100_SHIFT) | ANA_BP_BAD_LINK_ACCUM | | |
353 | ANA_BP_SMALL_BW; | |
354 | ||
355 | atl1c_write_phy_reg(hw, MII_DBG_ADDR, MII_ANA_CTRL_54); | |
356 | atl1c_write_phy_reg(hw, MII_DBG_DATA, data); | |
357 | ||
358 | data = (11 & ANA_IECHO_ADJ_MASK) | ((11 & ANA_IECHO_ADJ_MASK) << | |
359 | ANA_IECHO_ADJ_2_SHIFT) | ((8 & ANA_IECHO_ADJ_MASK) << | |
360 | ANA_IECHO_ADJ_1_SHIFT) | ((8 & ANA_IECHO_ADJ_MASK) << | |
361 | ANA_IECHO_ADJ_0_SHIFT); | |
362 | ||
363 | atl1c_write_phy_reg(hw, MII_DBG_ADDR, MII_ANA_CTRL_4); | |
364 | atl1c_write_phy_reg(hw, MII_DBG_DATA, data); | |
365 | ||
366 | data = ANA_RESTART_CAL | ((7 & ANA_MANUL_SWICH_ON_MASK) << | |
367 | ANA_MANUL_SWICH_ON_SHIFT) | ANA_MAN_ENABLE | | |
368 | ANA_SEL_HSP | ANA_EN_HB | ANA_OEN_125M; | |
369 | ||
370 | atl1c_write_phy_reg(hw, MII_DBG_ADDR, MII_ANA_CTRL_0); | |
371 | atl1c_write_phy_reg(hw, MII_DBG_DATA, data); | |
372 | ||
373 | if (hw->ctrl_flags & ATL1C_HIB_DISABLE) { | |
374 | atl1c_write_phy_reg(hw, MII_DBG_ADDR, MII_ANA_CTRL_41); | |
375 | if (atl1c_read_phy_reg(hw, MII_DBG_DATA, &data) != 0) | |
376 | return; | |
377 | data &= ~ANA_TOP_PS_EN; | |
378 | atl1c_write_phy_reg(hw, MII_DBG_DATA, data); | |
379 | ||
380 | atl1c_write_phy_reg(hw, MII_DBG_ADDR, MII_ANA_CTRL_11); | |
381 | if (atl1c_read_phy_reg(hw, MII_DBG_DATA, &data) != 0) | |
382 | return; | |
383 | data &= ~ANA_PS_HIB_EN; | |
384 | atl1c_write_phy_reg(hw, MII_DBG_DATA, data); | |
385 | } | |
386 | } | |
387 | ||
388 | int atl1c_phy_reset(struct atl1c_hw *hw) | |
389 | { | |
390 | struct atl1c_adapter *adapter = hw->adapter; | |
391 | struct pci_dev *pdev = adapter->pdev; | |
392 | u32 phy_ctrl_data = GPHY_CTRL_DEFAULT; | |
393 | u32 mii_ier_data = IER_LINK_UP | IER_LINK_DOWN; | |
394 | int err; | |
395 | ||
396 | if (hw->ctrl_flags & ATL1C_HIB_DISABLE) | |
397 | phy_ctrl_data &= ~GPHY_CTRL_HIB_EN; | |
398 | ||
399 | AT_WRITE_REG(hw, REG_GPHY_CTRL, phy_ctrl_data); | |
400 | AT_WRITE_FLUSH(hw); | |
401 | msleep(40); | |
402 | phy_ctrl_data |= GPHY_CTRL_EXT_RESET; | |
403 | AT_WRITE_REG(hw, REG_GPHY_CTRL, phy_ctrl_data); | |
404 | AT_WRITE_FLUSH(hw); | |
405 | msleep(10); | |
406 | ||
407 | /*Enable PHY LinkChange Interrupt */ | |
408 | err = atl1c_write_phy_reg(hw, MII_IER, mii_ier_data); | |
409 | if (err) { | |
410 | if (netif_msg_hw(adapter)) | |
411 | dev_err(&pdev->dev, | |
412 | "Error enable PHY linkChange Interrupt\n"); | |
413 | return err; | |
414 | } | |
415 | if (!(hw->ctrl_flags & ATL1C_FPGA_VERSION)) | |
416 | atl1c_phy_magic_data(hw); | |
417 | return 0; | |
418 | } | |
419 | ||
420 | int atl1c_phy_init(struct atl1c_hw *hw) | |
421 | { | |
422 | struct atl1c_adapter *adapter = (struct atl1c_adapter *)hw->adapter; | |
423 | struct pci_dev *pdev = adapter->pdev; | |
424 | int ret_val; | |
425 | u16 mii_bmcr_data = BMCR_RESET; | |
426 | u16 phy_id1, phy_id2; | |
427 | ||
428 | if ((atl1c_read_phy_reg(hw, MII_PHYSID1, &phy_id1) != 0) || | |
429 | (atl1c_read_phy_reg(hw, MII_PHYSID2, &phy_id2) != 0)) { | |
430 | if (netif_msg_link(adapter)) | |
431 | dev_err(&pdev->dev, "Error get phy ID\n"); | |
432 | return -1; | |
433 | } | |
434 | switch (hw->media_type) { | |
435 | case MEDIA_TYPE_AUTO_SENSOR: | |
436 | ret_val = atl1c_phy_setup_adv(hw); | |
437 | if (ret_val) { | |
438 | if (netif_msg_link(adapter)) | |
439 | dev_err(&pdev->dev, | |
440 | "Error Setting up Auto-Negotiation\n"); | |
441 | return ret_val; | |
442 | } | |
443 | mii_bmcr_data |= BMCR_AUTO_NEG_EN | BMCR_RESTART_AUTO_NEG; | |
444 | break; | |
445 | case MEDIA_TYPE_100M_FULL: | |
446 | mii_bmcr_data |= BMCR_SPEED_100 | BMCR_FULL_DUPLEX; | |
447 | break; | |
448 | case MEDIA_TYPE_100M_HALF: | |
449 | mii_bmcr_data |= BMCR_SPEED_100; | |
450 | break; | |
451 | case MEDIA_TYPE_10M_FULL: | |
452 | mii_bmcr_data |= BMCR_SPEED_10 | BMCR_FULL_DUPLEX; | |
453 | break; | |
454 | case MEDIA_TYPE_10M_HALF: | |
455 | mii_bmcr_data |= BMCR_SPEED_10; | |
456 | break; | |
457 | default: | |
458 | if (netif_msg_link(adapter)) | |
459 | dev_err(&pdev->dev, "Wrong Media type %d\n", | |
460 | hw->media_type); | |
461 | return -1; | |
462 | break; | |
463 | } | |
464 | ||
465 | ret_val = atl1c_write_phy_reg(hw, MII_BMCR, mii_bmcr_data); | |
466 | if (ret_val) | |
467 | return ret_val; | |
468 | hw->phy_configured = true; | |
469 | ||
470 | return 0; | |
471 | } | |
472 | ||
473 | /* | |
474 | * Detects the current speed and duplex settings of the hardware. | |
475 | * | |
476 | * hw - Struct containing variables accessed by shared code | |
477 | * speed - Speed of the connection | |
478 | * duplex - Duplex setting of the connection | |
479 | */ | |
480 | int atl1c_get_speed_and_duplex(struct atl1c_hw *hw, u16 *speed, u16 *duplex) | |
481 | { | |
482 | int err; | |
483 | u16 phy_data; | |
484 | ||
485 | /* Read PHY Specific Status Register (17) */ | |
486 | err = atl1c_read_phy_reg(hw, MII_GIGA_PSSR, &phy_data); | |
487 | if (err) | |
488 | return err; | |
489 | ||
490 | if (!(phy_data & GIGA_PSSR_SPD_DPLX_RESOLVED)) | |
491 | return -1; | |
492 | ||
493 | switch (phy_data & GIGA_PSSR_SPEED) { | |
494 | case GIGA_PSSR_1000MBS: | |
495 | *speed = SPEED_1000; | |
496 | break; | |
497 | case GIGA_PSSR_100MBS: | |
498 | *speed = SPEED_100; | |
499 | break; | |
500 | case GIGA_PSSR_10MBS: | |
501 | *speed = SPEED_10; | |
502 | break; | |
503 | default: | |
504 | return -1; | |
505 | break; | |
506 | } | |
507 | ||
508 | if (phy_data & GIGA_PSSR_DPLX) | |
509 | *duplex = FULL_DUPLEX; | |
510 | else | |
511 | *duplex = HALF_DUPLEX; | |
512 | ||
513 | return 0; | |
514 | } | |
515 | ||
516 | int atl1c_restart_autoneg(struct atl1c_hw *hw) | |
517 | { | |
518 | int err = 0; | |
519 | u16 mii_bmcr_data = BMCR_RESET; | |
520 | ||
521 | err = atl1c_phy_setup_adv(hw); | |
522 | if (err) | |
523 | return err; | |
524 | mii_bmcr_data |= BMCR_AUTO_NEG_EN | BMCR_RESTART_AUTO_NEG; | |
525 | ||
526 | return atl1c_write_phy_reg(hw, MII_BMCR, mii_bmcr_data); | |
527 | } |