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9a799d71 AK |
1 | /******************************************************************************* |
2 | ||
3 | Intel 10 Gigabit PCI Express Linux driver | |
94971820 | 4 | Copyright(c) 1999 - 2012 Intel Corporation. |
9a799d71 AK |
5 | |
6 | This program is free software; you can redistribute it and/or modify it | |
7 | under the terms and conditions of the GNU General Public License, | |
8 | version 2, as published by the Free Software Foundation. | |
9 | ||
10 | This program is distributed in the hope it will be useful, but WITHOUT | |
11 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
12 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
13 | more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License along with | |
16 | this program; if not, write to the Free Software Foundation, Inc., | |
17 | 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
18 | ||
19 | The full GNU General Public License is included in this distribution in | |
20 | the file called "COPYING". | |
21 | ||
22 | Contact Information: | |
9a799d71 AK |
23 | e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> |
24 | Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
25 | ||
26 | *******************************************************************************/ | |
27 | ||
28 | #include <linux/pci.h> | |
29 | #include <linux/delay.h> | |
30 | #include <linux/sched.h> | |
31 | ||
32 | #include "ixgbe_common.h" | |
33 | #include "ixgbe_phy.h" | |
34 | ||
11afc1b1 PW |
35 | static void ixgbe_i2c_start(struct ixgbe_hw *hw); |
36 | static void ixgbe_i2c_stop(struct ixgbe_hw *hw); | |
37 | static s32 ixgbe_clock_in_i2c_byte(struct ixgbe_hw *hw, u8 *data); | |
38 | static s32 ixgbe_clock_out_i2c_byte(struct ixgbe_hw *hw, u8 data); | |
39 | static s32 ixgbe_get_i2c_ack(struct ixgbe_hw *hw); | |
40 | static s32 ixgbe_clock_in_i2c_bit(struct ixgbe_hw *hw, bool *data); | |
41 | static s32 ixgbe_clock_out_i2c_bit(struct ixgbe_hw *hw, bool data); | |
e1befd77 | 42 | static void ixgbe_raise_i2c_clk(struct ixgbe_hw *hw, u32 *i2cctl); |
11afc1b1 PW |
43 | static void ixgbe_lower_i2c_clk(struct ixgbe_hw *hw, u32 *i2cctl); |
44 | static s32 ixgbe_set_i2c_data(struct ixgbe_hw *hw, u32 *i2cctl, bool data); | |
45 | static bool ixgbe_get_i2c_data(u32 *i2cctl); | |
46 | static void ixgbe_i2c_bus_clear(struct ixgbe_hw *hw); | |
9a799d71 AK |
47 | static enum ixgbe_phy_type ixgbe_get_phy_type_from_id(u32 phy_id); |
48 | static s32 ixgbe_get_phy_id(struct ixgbe_hw *hw); | |
9a799d71 AK |
49 | |
50 | /** | |
c44ade9e | 51 | * ixgbe_identify_phy_generic - Get physical layer module |
9a799d71 AK |
52 | * @hw: pointer to hardware structure |
53 | * | |
54 | * Determines the physical layer module found on the current adapter. | |
55 | **/ | |
c44ade9e | 56 | s32 ixgbe_identify_phy_generic(struct ixgbe_hw *hw) |
9a799d71 AK |
57 | { |
58 | s32 status = IXGBE_ERR_PHY_ADDR_INVALID; | |
59 | u32 phy_addr; | |
037c6d0a | 60 | u16 ext_ability = 0; |
9a799d71 | 61 | |
c44ade9e JB |
62 | if (hw->phy.type == ixgbe_phy_unknown) { |
63 | for (phy_addr = 0; phy_addr < IXGBE_MAX_PHY_ADDR; phy_addr++) { | |
63d6e1d8 | 64 | hw->phy.mdio.prtad = phy_addr; |
6b73e10d | 65 | if (mdio45_probe(&hw->phy.mdio, phy_addr) == 0) { |
c44ade9e JB |
66 | ixgbe_get_phy_id(hw); |
67 | hw->phy.type = | |
68 | ixgbe_get_phy_type_from_id(hw->phy.id); | |
037c6d0a ET |
69 | |
70 | if (hw->phy.type == ixgbe_phy_unknown) { | |
71 | hw->phy.ops.read_reg(hw, | |
72 | MDIO_PMA_EXTABLE, | |
73 | MDIO_MMD_PMAPMD, | |
74 | &ext_ability); | |
75 | if (ext_ability & | |
76 | (MDIO_PMA_EXTABLE_10GBT | | |
77 | MDIO_PMA_EXTABLE_1000BT)) | |
78 | hw->phy.type = | |
79 | ixgbe_phy_cu_unknown; | |
80 | else | |
81 | hw->phy.type = | |
82 | ixgbe_phy_generic; | |
83 | } | |
84 | ||
c44ade9e JB |
85 | status = 0; |
86 | break; | |
87 | } | |
9a799d71 | 88 | } |
63d6e1d8 | 89 | /* clear value if nothing found */ |
037c6d0a ET |
90 | if (status != 0) |
91 | hw->phy.mdio.prtad = 0; | |
c44ade9e JB |
92 | } else { |
93 | status = 0; | |
9a799d71 | 94 | } |
c44ade9e | 95 | |
9a799d71 AK |
96 | return status; |
97 | } | |
98 | ||
9a799d71 AK |
99 | /** |
100 | * ixgbe_get_phy_id - Get the phy type | |
101 | * @hw: pointer to hardware structure | |
102 | * | |
103 | **/ | |
104 | static s32 ixgbe_get_phy_id(struct ixgbe_hw *hw) | |
105 | { | |
106 | u32 status; | |
107 | u16 phy_id_high = 0; | |
108 | u16 phy_id_low = 0; | |
109 | ||
6b73e10d | 110 | status = hw->phy.ops.read_reg(hw, MDIO_DEVID1, MDIO_MMD_PMAPMD, |
c44ade9e | 111 | &phy_id_high); |
9a799d71 AK |
112 | |
113 | if (status == 0) { | |
114 | hw->phy.id = (u32)(phy_id_high << 16); | |
6b73e10d | 115 | status = hw->phy.ops.read_reg(hw, MDIO_DEVID2, MDIO_MMD_PMAPMD, |
c44ade9e | 116 | &phy_id_low); |
9a799d71 AK |
117 | hw->phy.id |= (u32)(phy_id_low & IXGBE_PHY_REVISION_MASK); |
118 | hw->phy.revision = (u32)(phy_id_low & ~IXGBE_PHY_REVISION_MASK); | |
119 | } | |
9a799d71 AK |
120 | return status; |
121 | } | |
122 | ||
123 | /** | |
124 | * ixgbe_get_phy_type_from_id - Get the phy type | |
125 | * @hw: pointer to hardware structure | |
126 | * | |
127 | **/ | |
128 | static enum ixgbe_phy_type ixgbe_get_phy_type_from_id(u32 phy_id) | |
129 | { | |
130 | enum ixgbe_phy_type phy_type; | |
131 | ||
132 | switch (phy_id) { | |
0befdb3e JB |
133 | case TN1010_PHY_ID: |
134 | phy_type = ixgbe_phy_tn; | |
135 | break; | |
2b264909 | 136 | case X540_PHY_ID: |
fe15e8e1 DS |
137 | phy_type = ixgbe_phy_aq; |
138 | break; | |
9a799d71 AK |
139 | case QT2022_PHY_ID: |
140 | phy_type = ixgbe_phy_qt; | |
141 | break; | |
c4900be0 DS |
142 | case ATH_PHY_ID: |
143 | phy_type = ixgbe_phy_nl; | |
144 | break; | |
9a799d71 AK |
145 | default: |
146 | phy_type = ixgbe_phy_unknown; | |
147 | break; | |
148 | } | |
149 | ||
150 | return phy_type; | |
151 | } | |
152 | ||
153 | /** | |
c44ade9e | 154 | * ixgbe_reset_phy_generic - Performs a PHY reset |
9a799d71 AK |
155 | * @hw: pointer to hardware structure |
156 | **/ | |
c44ade9e | 157 | s32 ixgbe_reset_phy_generic(struct ixgbe_hw *hw) |
9a799d71 | 158 | { |
1783575c ET |
159 | u32 i; |
160 | u16 ctrl = 0; | |
161 | s32 status = 0; | |
162 | ||
163 | if (hw->phy.type == ixgbe_phy_unknown) | |
164 | status = ixgbe_identify_phy_generic(hw); | |
165 | ||
166 | if (status != 0 || hw->phy.type == ixgbe_phy_none) | |
167 | goto out; | |
168 | ||
119fc60a MC |
169 | /* Don't reset PHY if it's shut down due to overtemp. */ |
170 | if (!hw->phy.reset_if_overtemp && | |
171 | (IXGBE_ERR_OVERTEMP == hw->phy.ops.check_overtemp(hw))) | |
1783575c | 172 | goto out; |
119fc60a | 173 | |
9a799d71 AK |
174 | /* |
175 | * Perform soft PHY reset to the PHY_XS. | |
176 | * This will cause a soft reset to the PHY | |
177 | */ | |
1783575c ET |
178 | hw->phy.ops.write_reg(hw, MDIO_CTRL1, |
179 | MDIO_MMD_PHYXS, | |
180 | MDIO_CTRL1_RESET); | |
181 | ||
182 | /* | |
183 | * Poll for reset bit to self-clear indicating reset is complete. | |
184 | * Some PHYs could take up to 3 seconds to complete and need about | |
185 | * 1.7 usec delay after the reset is complete. | |
186 | */ | |
187 | for (i = 0; i < 30; i++) { | |
188 | msleep(100); | |
189 | hw->phy.ops.read_reg(hw, MDIO_CTRL1, | |
190 | MDIO_MMD_PHYXS, &ctrl); | |
191 | if (!(ctrl & MDIO_CTRL1_RESET)) { | |
192 | udelay(2); | |
193 | break; | |
194 | } | |
195 | } | |
196 | ||
197 | if (ctrl & MDIO_CTRL1_RESET) { | |
198 | status = IXGBE_ERR_RESET_FAILED; | |
199 | hw_dbg(hw, "PHY reset polling failed to complete.\n"); | |
200 | } | |
201 | ||
202 | out: | |
203 | return status; | |
9a799d71 AK |
204 | } |
205 | ||
206 | /** | |
c44ade9e | 207 | * ixgbe_read_phy_reg_generic - Reads a value from a specified PHY register |
9a799d71 AK |
208 | * @hw: pointer to hardware structure |
209 | * @reg_addr: 32 bit address of PHY register to read | |
210 | * @phy_data: Pointer to read data from PHY register | |
211 | **/ | |
c44ade9e JB |
212 | s32 ixgbe_read_phy_reg_generic(struct ixgbe_hw *hw, u32 reg_addr, |
213 | u32 device_type, u16 *phy_data) | |
9a799d71 AK |
214 | { |
215 | u32 command; | |
216 | u32 i; | |
9a799d71 AK |
217 | u32 data; |
218 | s32 status = 0; | |
219 | u16 gssr; | |
220 | ||
221 | if (IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1) | |
222 | gssr = IXGBE_GSSR_PHY1_SM; | |
223 | else | |
224 | gssr = IXGBE_GSSR_PHY0_SM; | |
225 | ||
5e655105 | 226 | if (hw->mac.ops.acquire_swfw_sync(hw, gssr) != 0) |
9a799d71 AK |
227 | status = IXGBE_ERR_SWFW_SYNC; |
228 | ||
229 | if (status == 0) { | |
230 | /* Setup and write the address cycle command */ | |
231 | command = ((reg_addr << IXGBE_MSCA_NP_ADDR_SHIFT) | | |
c44ade9e | 232 | (device_type << IXGBE_MSCA_DEV_TYPE_SHIFT) | |
6b73e10d | 233 | (hw->phy.mdio.prtad << IXGBE_MSCA_PHY_ADDR_SHIFT) | |
c44ade9e | 234 | (IXGBE_MSCA_ADDR_CYCLE | IXGBE_MSCA_MDI_COMMAND)); |
9a799d71 AK |
235 | |
236 | IXGBE_WRITE_REG(hw, IXGBE_MSCA, command); | |
237 | ||
238 | /* | |
239 | * Check every 10 usec to see if the address cycle completed. | |
240 | * The MDI Command bit will clear when the operation is | |
241 | * complete | |
242 | */ | |
c44ade9e | 243 | for (i = 0; i < IXGBE_MDIO_COMMAND_TIMEOUT; i++) { |
9a799d71 AK |
244 | udelay(10); |
245 | ||
246 | command = IXGBE_READ_REG(hw, IXGBE_MSCA); | |
247 | ||
248 | if ((command & IXGBE_MSCA_MDI_COMMAND) == 0) | |
249 | break; | |
250 | } | |
251 | ||
252 | if ((command & IXGBE_MSCA_MDI_COMMAND) != 0) { | |
253 | hw_dbg(hw, "PHY address command did not complete.\n"); | |
254 | status = IXGBE_ERR_PHY; | |
255 | } | |
256 | ||
257 | if (status == 0) { | |
258 | /* | |
259 | * Address cycle complete, setup and write the read | |
260 | * command | |
261 | */ | |
262 | command = ((reg_addr << IXGBE_MSCA_NP_ADDR_SHIFT) | | |
c44ade9e | 263 | (device_type << IXGBE_MSCA_DEV_TYPE_SHIFT) | |
6b73e10d BH |
264 | (hw->phy.mdio.prtad << |
265 | IXGBE_MSCA_PHY_ADDR_SHIFT) | | |
c44ade9e | 266 | (IXGBE_MSCA_READ | IXGBE_MSCA_MDI_COMMAND)); |
9a799d71 AK |
267 | |
268 | IXGBE_WRITE_REG(hw, IXGBE_MSCA, command); | |
269 | ||
270 | /* | |
271 | * Check every 10 usec to see if the address cycle | |
272 | * completed. The MDI Command bit will clear when the | |
273 | * operation is complete | |
274 | */ | |
c44ade9e | 275 | for (i = 0; i < IXGBE_MDIO_COMMAND_TIMEOUT; i++) { |
9a799d71 AK |
276 | udelay(10); |
277 | ||
278 | command = IXGBE_READ_REG(hw, IXGBE_MSCA); | |
279 | ||
280 | if ((command & IXGBE_MSCA_MDI_COMMAND) == 0) | |
281 | break; | |
282 | } | |
283 | ||
284 | if ((command & IXGBE_MSCA_MDI_COMMAND) != 0) { | |
c44ade9e | 285 | hw_dbg(hw, "PHY read command didn't complete\n"); |
9a799d71 AK |
286 | status = IXGBE_ERR_PHY; |
287 | } else { | |
288 | /* | |
289 | * Read operation is complete. Get the data | |
290 | * from MSRWD | |
291 | */ | |
292 | data = IXGBE_READ_REG(hw, IXGBE_MSRWD); | |
293 | data >>= IXGBE_MSRWD_READ_DATA_SHIFT; | |
294 | *phy_data = (u16)(data); | |
295 | } | |
296 | } | |
297 | ||
5e655105 | 298 | hw->mac.ops.release_swfw_sync(hw, gssr); |
9a799d71 | 299 | } |
c44ade9e | 300 | |
9a799d71 AK |
301 | return status; |
302 | } | |
303 | ||
304 | /** | |
c44ade9e | 305 | * ixgbe_write_phy_reg_generic - Writes a value to specified PHY register |
9a799d71 AK |
306 | * @hw: pointer to hardware structure |
307 | * @reg_addr: 32 bit PHY register to write | |
308 | * @device_type: 5 bit device type | |
309 | * @phy_data: Data to write to the PHY register | |
310 | **/ | |
c44ade9e JB |
311 | s32 ixgbe_write_phy_reg_generic(struct ixgbe_hw *hw, u32 reg_addr, |
312 | u32 device_type, u16 phy_data) | |
9a799d71 AK |
313 | { |
314 | u32 command; | |
315 | u32 i; | |
9a799d71 AK |
316 | s32 status = 0; |
317 | u16 gssr; | |
318 | ||
319 | if (IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1) | |
320 | gssr = IXGBE_GSSR_PHY1_SM; | |
321 | else | |
322 | gssr = IXGBE_GSSR_PHY0_SM; | |
323 | ||
5e655105 | 324 | if (hw->mac.ops.acquire_swfw_sync(hw, gssr) != 0) |
9a799d71 AK |
325 | status = IXGBE_ERR_SWFW_SYNC; |
326 | ||
327 | if (status == 0) { | |
328 | /* Put the data in the MDI single read and write data register*/ | |
329 | IXGBE_WRITE_REG(hw, IXGBE_MSRWD, (u32)phy_data); | |
330 | ||
331 | /* Setup and write the address cycle command */ | |
332 | command = ((reg_addr << IXGBE_MSCA_NP_ADDR_SHIFT) | | |
c44ade9e | 333 | (device_type << IXGBE_MSCA_DEV_TYPE_SHIFT) | |
6b73e10d | 334 | (hw->phy.mdio.prtad << IXGBE_MSCA_PHY_ADDR_SHIFT) | |
c44ade9e | 335 | (IXGBE_MSCA_ADDR_CYCLE | IXGBE_MSCA_MDI_COMMAND)); |
9a799d71 AK |
336 | |
337 | IXGBE_WRITE_REG(hw, IXGBE_MSCA, command); | |
338 | ||
339 | /* | |
340 | * Check every 10 usec to see if the address cycle completed. | |
341 | * The MDI Command bit will clear when the operation is | |
342 | * complete | |
343 | */ | |
c44ade9e | 344 | for (i = 0; i < IXGBE_MDIO_COMMAND_TIMEOUT; i++) { |
9a799d71 AK |
345 | udelay(10); |
346 | ||
347 | command = IXGBE_READ_REG(hw, IXGBE_MSCA); | |
348 | ||
c44ade9e | 349 | if ((command & IXGBE_MSCA_MDI_COMMAND) == 0) |
9a799d71 | 350 | break; |
9a799d71 AK |
351 | } |
352 | ||
c44ade9e JB |
353 | if ((command & IXGBE_MSCA_MDI_COMMAND) != 0) { |
354 | hw_dbg(hw, "PHY address cmd didn't complete\n"); | |
9a799d71 | 355 | status = IXGBE_ERR_PHY; |
c44ade9e | 356 | } |
9a799d71 AK |
357 | |
358 | if (status == 0) { | |
359 | /* | |
360 | * Address cycle complete, setup and write the write | |
361 | * command | |
362 | */ | |
363 | command = ((reg_addr << IXGBE_MSCA_NP_ADDR_SHIFT) | | |
c44ade9e | 364 | (device_type << IXGBE_MSCA_DEV_TYPE_SHIFT) | |
6b73e10d BH |
365 | (hw->phy.mdio.prtad << |
366 | IXGBE_MSCA_PHY_ADDR_SHIFT) | | |
c44ade9e | 367 | (IXGBE_MSCA_WRITE | IXGBE_MSCA_MDI_COMMAND)); |
9a799d71 AK |
368 | |
369 | IXGBE_WRITE_REG(hw, IXGBE_MSCA, command); | |
370 | ||
371 | /* | |
372 | * Check every 10 usec to see if the address cycle | |
373 | * completed. The MDI Command bit will clear when the | |
374 | * operation is complete | |
375 | */ | |
c44ade9e | 376 | for (i = 0; i < IXGBE_MDIO_COMMAND_TIMEOUT; i++) { |
9a799d71 AK |
377 | udelay(10); |
378 | ||
379 | command = IXGBE_READ_REG(hw, IXGBE_MSCA); | |
380 | ||
c44ade9e | 381 | if ((command & IXGBE_MSCA_MDI_COMMAND) == 0) |
9a799d71 | 382 | break; |
9a799d71 AK |
383 | } |
384 | ||
c44ade9e JB |
385 | if ((command & IXGBE_MSCA_MDI_COMMAND) != 0) { |
386 | hw_dbg(hw, "PHY address cmd didn't complete\n"); | |
9a799d71 | 387 | status = IXGBE_ERR_PHY; |
c44ade9e | 388 | } |
9a799d71 AK |
389 | } |
390 | ||
5e655105 | 391 | hw->mac.ops.release_swfw_sync(hw, gssr); |
9a799d71 AK |
392 | } |
393 | ||
394 | return status; | |
395 | } | |
396 | ||
397 | /** | |
c44ade9e | 398 | * ixgbe_setup_phy_link_generic - Set and restart autoneg |
9a799d71 AK |
399 | * @hw: pointer to hardware structure |
400 | * | |
401 | * Restart autonegotiation and PHY and waits for completion. | |
402 | **/ | |
c44ade9e | 403 | s32 ixgbe_setup_phy_link_generic(struct ixgbe_hw *hw) |
9a799d71 | 404 | { |
9dda1736 | 405 | s32 status = 0; |
9a799d71 AK |
406 | u32 time_out; |
407 | u32 max_time_out = 10; | |
9dda1736 ET |
408 | u16 autoneg_reg = IXGBE_MII_AUTONEG_REG; |
409 | bool autoneg = false; | |
410 | ixgbe_link_speed speed; | |
9a799d71 | 411 | |
9dda1736 ET |
412 | ixgbe_get_copper_link_capabilities_generic(hw, &speed, &autoneg); |
413 | ||
414 | if (speed & IXGBE_LINK_SPEED_10GB_FULL) { | |
415 | /* Set or unset auto-negotiation 10G advertisement */ | |
416 | hw->phy.ops.read_reg(hw, MDIO_AN_10GBT_CTRL, | |
417 | MDIO_MMD_AN, | |
418 | &autoneg_reg); | |
9a799d71 | 419 | |
6b73e10d | 420 | autoneg_reg &= ~MDIO_AN_10GBT_CTRL_ADV10G; |
9dda1736 ET |
421 | if (hw->phy.autoneg_advertised & IXGBE_LINK_SPEED_10GB_FULL) |
422 | autoneg_reg |= MDIO_AN_10GBT_CTRL_ADV10G; | |
9a799d71 | 423 | |
9dda1736 ET |
424 | hw->phy.ops.write_reg(hw, MDIO_AN_10GBT_CTRL, |
425 | MDIO_MMD_AN, | |
426 | autoneg_reg); | |
427 | } | |
428 | ||
429 | if (speed & IXGBE_LINK_SPEED_1GB_FULL) { | |
430 | /* Set or unset auto-negotiation 1G advertisement */ | |
431 | hw->phy.ops.read_reg(hw, | |
432 | IXGBE_MII_AUTONEG_VENDOR_PROVISION_1_REG, | |
433 | MDIO_MMD_AN, | |
434 | &autoneg_reg); | |
435 | ||
436 | autoneg_reg &= ~IXGBE_MII_1GBASE_T_ADVERTISE; | |
437 | if (hw->phy.autoneg_advertised & IXGBE_LINK_SPEED_1GB_FULL) | |
438 | autoneg_reg |= IXGBE_MII_1GBASE_T_ADVERTISE; | |
439 | ||
440 | hw->phy.ops.write_reg(hw, | |
441 | IXGBE_MII_AUTONEG_VENDOR_PROVISION_1_REG, | |
442 | MDIO_MMD_AN, | |
443 | autoneg_reg); | |
444 | } | |
445 | ||
446 | if (speed & IXGBE_LINK_SPEED_100_FULL) { | |
447 | /* Set or unset auto-negotiation 100M advertisement */ | |
448 | hw->phy.ops.read_reg(hw, MDIO_AN_ADVERTISE, | |
449 | MDIO_MMD_AN, | |
450 | &autoneg_reg); | |
451 | ||
a59e8a1a ET |
452 | autoneg_reg &= ~(ADVERTISE_100FULL | |
453 | ADVERTISE_100HALF); | |
9dda1736 ET |
454 | if (hw->phy.autoneg_advertised & IXGBE_LINK_SPEED_100_FULL) |
455 | autoneg_reg |= ADVERTISE_100FULL; | |
456 | ||
457 | hw->phy.ops.write_reg(hw, MDIO_AN_ADVERTISE, | |
458 | MDIO_MMD_AN, | |
459 | autoneg_reg); | |
460 | } | |
9a799d71 AK |
461 | |
462 | /* Restart PHY autonegotiation and wait for completion */ | |
9dda1736 ET |
463 | hw->phy.ops.read_reg(hw, MDIO_CTRL1, |
464 | MDIO_MMD_AN, &autoneg_reg); | |
9a799d71 | 465 | |
6b73e10d | 466 | autoneg_reg |= MDIO_AN_CTRL1_RESTART; |
9a799d71 | 467 | |
9dda1736 ET |
468 | hw->phy.ops.write_reg(hw, MDIO_CTRL1, |
469 | MDIO_MMD_AN, autoneg_reg); | |
9a799d71 AK |
470 | |
471 | /* Wait for autonegotiation to finish */ | |
472 | for (time_out = 0; time_out < max_time_out; time_out++) { | |
473 | udelay(10); | |
474 | /* Restart PHY autonegotiation and wait for completion */ | |
9dda1736 ET |
475 | status = hw->phy.ops.read_reg(hw, MDIO_STAT1, |
476 | MDIO_MMD_AN, | |
477 | &autoneg_reg); | |
9a799d71 | 478 | |
6b73e10d BH |
479 | autoneg_reg &= MDIO_AN_STAT1_COMPLETE; |
480 | if (autoneg_reg == MDIO_AN_STAT1_COMPLETE) { | |
9a799d71 AK |
481 | break; |
482 | } | |
483 | } | |
484 | ||
9dda1736 | 485 | if (time_out == max_time_out) { |
9a799d71 | 486 | status = IXGBE_ERR_LINK_SETUP; |
9dda1736 ET |
487 | hw_dbg(hw, "ixgbe_setup_phy_link_generic: time out"); |
488 | } | |
9a799d71 AK |
489 | |
490 | return status; | |
491 | } | |
492 | ||
493 | /** | |
c44ade9e | 494 | * ixgbe_setup_phy_link_speed_generic - Sets the auto advertised capabilities |
9a799d71 AK |
495 | * @hw: pointer to hardware structure |
496 | * @speed: new link speed | |
497 | * @autoneg: true if autonegotiation enabled | |
498 | **/ | |
c44ade9e JB |
499 | s32 ixgbe_setup_phy_link_speed_generic(struct ixgbe_hw *hw, |
500 | ixgbe_link_speed speed, | |
501 | bool autoneg, | |
502 | bool autoneg_wait_to_complete) | |
9a799d71 | 503 | { |
c44ade9e | 504 | |
9a799d71 AK |
505 | /* |
506 | * Clear autoneg_advertised and set new values based on input link | |
507 | * speed. | |
508 | */ | |
509 | hw->phy.autoneg_advertised = 0; | |
510 | ||
511 | if (speed & IXGBE_LINK_SPEED_10GB_FULL) | |
512 | hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_10GB_FULL; | |
c44ade9e | 513 | |
9a799d71 AK |
514 | if (speed & IXGBE_LINK_SPEED_1GB_FULL) |
515 | hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_1GB_FULL; | |
516 | ||
9dda1736 ET |
517 | if (speed & IXGBE_LINK_SPEED_100_FULL) |
518 | hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_100_FULL; | |
519 | ||
9a799d71 | 520 | /* Setup link based on the new speed settings */ |
c44ade9e | 521 | hw->phy.ops.setup_link(hw); |
9a799d71 AK |
522 | |
523 | return 0; | |
524 | } | |
c44ade9e | 525 | |
a391f1d5 DS |
526 | /** |
527 | * ixgbe_get_copper_link_capabilities_generic - Determines link capabilities | |
528 | * @hw: pointer to hardware structure | |
529 | * @speed: pointer to link speed | |
530 | * @autoneg: boolean auto-negotiation value | |
531 | * | |
532 | * Determines the link capabilities by reading the AUTOC register. | |
533 | */ | |
534 | s32 ixgbe_get_copper_link_capabilities_generic(struct ixgbe_hw *hw, | |
fe15e8e1 DS |
535 | ixgbe_link_speed *speed, |
536 | bool *autoneg) | |
a391f1d5 DS |
537 | { |
538 | s32 status = IXGBE_ERR_LINK_SETUP; | |
539 | u16 speed_ability; | |
540 | ||
541 | *speed = 0; | |
542 | *autoneg = true; | |
543 | ||
544 | status = hw->phy.ops.read_reg(hw, MDIO_SPEED, MDIO_MMD_PMAPMD, | |
545 | &speed_ability); | |
546 | ||
547 | if (status == 0) { | |
548 | if (speed_ability & MDIO_SPEED_10G) | |
549 | *speed |= IXGBE_LINK_SPEED_10GB_FULL; | |
550 | if (speed_ability & MDIO_PMA_SPEED_1000) | |
551 | *speed |= IXGBE_LINK_SPEED_1GB_FULL; | |
552 | if (speed_ability & MDIO_PMA_SPEED_100) | |
553 | *speed |= IXGBE_LINK_SPEED_100_FULL; | |
554 | } | |
555 | ||
556 | return status; | |
557 | } | |
558 | ||
9dda1736 ET |
559 | /** |
560 | * ixgbe_check_phy_link_tnx - Determine link and speed status | |
561 | * @hw: pointer to hardware structure | |
562 | * | |
563 | * Reads the VS1 register to determine if link is up and the current speed for | |
564 | * the PHY. | |
565 | **/ | |
566 | s32 ixgbe_check_phy_link_tnx(struct ixgbe_hw *hw, ixgbe_link_speed *speed, | |
567 | bool *link_up) | |
568 | { | |
569 | s32 status = 0; | |
570 | u32 time_out; | |
571 | u32 max_time_out = 10; | |
572 | u16 phy_link = 0; | |
573 | u16 phy_speed = 0; | |
574 | u16 phy_data = 0; | |
575 | ||
576 | /* Initialize speed and link to default case */ | |
577 | *link_up = false; | |
578 | *speed = IXGBE_LINK_SPEED_10GB_FULL; | |
579 | ||
580 | /* | |
581 | * Check current speed and link status of the PHY register. | |
582 | * This is a vendor specific register and may have to | |
583 | * be changed for other copper PHYs. | |
584 | */ | |
585 | for (time_out = 0; time_out < max_time_out; time_out++) { | |
586 | udelay(10); | |
587 | status = hw->phy.ops.read_reg(hw, | |
588 | MDIO_STAT1, | |
589 | MDIO_MMD_VEND1, | |
590 | &phy_data); | |
591 | phy_link = phy_data & | |
592 | IXGBE_MDIO_VENDOR_SPECIFIC_1_LINK_STATUS; | |
593 | phy_speed = phy_data & | |
594 | IXGBE_MDIO_VENDOR_SPECIFIC_1_SPEED_STATUS; | |
595 | if (phy_link == IXGBE_MDIO_VENDOR_SPECIFIC_1_LINK_STATUS) { | |
596 | *link_up = true; | |
597 | if (phy_speed == | |
598 | IXGBE_MDIO_VENDOR_SPECIFIC_1_SPEED_STATUS) | |
599 | *speed = IXGBE_LINK_SPEED_1GB_FULL; | |
600 | break; | |
601 | } | |
602 | } | |
603 | ||
604 | return status; | |
605 | } | |
606 | ||
607 | /** | |
608 | * ixgbe_setup_phy_link_tnx - Set and restart autoneg | |
609 | * @hw: pointer to hardware structure | |
610 | * | |
611 | * Restart autonegotiation and PHY and waits for completion. | |
612 | **/ | |
613 | s32 ixgbe_setup_phy_link_tnx(struct ixgbe_hw *hw) | |
614 | { | |
615 | s32 status = 0; | |
616 | u32 time_out; | |
617 | u32 max_time_out = 10; | |
618 | u16 autoneg_reg = IXGBE_MII_AUTONEG_REG; | |
619 | bool autoneg = false; | |
620 | ixgbe_link_speed speed; | |
621 | ||
622 | ixgbe_get_copper_link_capabilities_generic(hw, &speed, &autoneg); | |
623 | ||
624 | if (speed & IXGBE_LINK_SPEED_10GB_FULL) { | |
625 | /* Set or unset auto-negotiation 10G advertisement */ | |
626 | hw->phy.ops.read_reg(hw, MDIO_AN_10GBT_CTRL, | |
627 | MDIO_MMD_AN, | |
628 | &autoneg_reg); | |
629 | ||
630 | autoneg_reg &= ~MDIO_AN_10GBT_CTRL_ADV10G; | |
631 | if (hw->phy.autoneg_advertised & IXGBE_LINK_SPEED_10GB_FULL) | |
632 | autoneg_reg |= MDIO_AN_10GBT_CTRL_ADV10G; | |
633 | ||
634 | hw->phy.ops.write_reg(hw, MDIO_AN_10GBT_CTRL, | |
635 | MDIO_MMD_AN, | |
636 | autoneg_reg); | |
637 | } | |
638 | ||
639 | if (speed & IXGBE_LINK_SPEED_1GB_FULL) { | |
640 | /* Set or unset auto-negotiation 1G advertisement */ | |
641 | hw->phy.ops.read_reg(hw, IXGBE_MII_AUTONEG_XNP_TX_REG, | |
642 | MDIO_MMD_AN, | |
643 | &autoneg_reg); | |
644 | ||
645 | autoneg_reg &= ~IXGBE_MII_1GBASE_T_ADVERTISE_XNP_TX; | |
646 | if (hw->phy.autoneg_advertised & IXGBE_LINK_SPEED_1GB_FULL) | |
647 | autoneg_reg |= IXGBE_MII_1GBASE_T_ADVERTISE_XNP_TX; | |
648 | ||
649 | hw->phy.ops.write_reg(hw, IXGBE_MII_AUTONEG_XNP_TX_REG, | |
650 | MDIO_MMD_AN, | |
651 | autoneg_reg); | |
652 | } | |
653 | ||
654 | if (speed & IXGBE_LINK_SPEED_100_FULL) { | |
655 | /* Set or unset auto-negotiation 100M advertisement */ | |
656 | hw->phy.ops.read_reg(hw, MDIO_AN_ADVERTISE, | |
657 | MDIO_MMD_AN, | |
658 | &autoneg_reg); | |
659 | ||
50c022e7 ET |
660 | autoneg_reg &= ~(ADVERTISE_100FULL | |
661 | ADVERTISE_100HALF); | |
9dda1736 ET |
662 | if (hw->phy.autoneg_advertised & IXGBE_LINK_SPEED_100_FULL) |
663 | autoneg_reg |= ADVERTISE_100FULL; | |
664 | ||
665 | hw->phy.ops.write_reg(hw, MDIO_AN_ADVERTISE, | |
666 | MDIO_MMD_AN, | |
667 | autoneg_reg); | |
668 | } | |
669 | ||
670 | /* Restart PHY autonegotiation and wait for completion */ | |
671 | hw->phy.ops.read_reg(hw, MDIO_CTRL1, | |
672 | MDIO_MMD_AN, &autoneg_reg); | |
673 | ||
674 | autoneg_reg |= MDIO_AN_CTRL1_RESTART; | |
675 | ||
676 | hw->phy.ops.write_reg(hw, MDIO_CTRL1, | |
677 | MDIO_MMD_AN, autoneg_reg); | |
678 | ||
679 | /* Wait for autonegotiation to finish */ | |
680 | for (time_out = 0; time_out < max_time_out; time_out++) { | |
681 | udelay(10); | |
682 | /* Restart PHY autonegotiation and wait for completion */ | |
683 | status = hw->phy.ops.read_reg(hw, MDIO_STAT1, | |
684 | MDIO_MMD_AN, | |
685 | &autoneg_reg); | |
686 | ||
687 | autoneg_reg &= MDIO_AN_STAT1_COMPLETE; | |
688 | if (autoneg_reg == MDIO_AN_STAT1_COMPLETE) | |
689 | break; | |
690 | } | |
691 | ||
692 | if (time_out == max_time_out) { | |
693 | status = IXGBE_ERR_LINK_SETUP; | |
694 | hw_dbg(hw, "ixgbe_setup_phy_link_tnx: time out"); | |
695 | } | |
696 | ||
697 | return status; | |
698 | } | |
699 | ||
700 | /** | |
701 | * ixgbe_get_phy_firmware_version_tnx - Gets the PHY Firmware Version | |
702 | * @hw: pointer to hardware structure | |
703 | * @firmware_version: pointer to the PHY Firmware Version | |
704 | **/ | |
705 | s32 ixgbe_get_phy_firmware_version_tnx(struct ixgbe_hw *hw, | |
706 | u16 *firmware_version) | |
707 | { | |
708 | s32 status = 0; | |
709 | ||
710 | status = hw->phy.ops.read_reg(hw, TNX_FW_REV, | |
711 | MDIO_MMD_VEND1, | |
712 | firmware_version); | |
713 | ||
714 | return status; | |
715 | } | |
716 | ||
717 | /** | |
718 | * ixgbe_get_phy_firmware_version_generic - Gets the PHY Firmware Version | |
719 | * @hw: pointer to hardware structure | |
720 | * @firmware_version: pointer to the PHY Firmware Version | |
721 | **/ | |
722 | s32 ixgbe_get_phy_firmware_version_generic(struct ixgbe_hw *hw, | |
723 | u16 *firmware_version) | |
724 | { | |
725 | s32 status = 0; | |
726 | ||
727 | status = hw->phy.ops.read_reg(hw, AQ_FW_REV, | |
728 | MDIO_MMD_VEND1, | |
729 | firmware_version); | |
730 | ||
731 | return status; | |
732 | } | |
733 | ||
c4900be0 DS |
734 | /** |
735 | * ixgbe_reset_phy_nl - Performs a PHY reset | |
736 | * @hw: pointer to hardware structure | |
737 | **/ | |
738 | s32 ixgbe_reset_phy_nl(struct ixgbe_hw *hw) | |
739 | { | |
740 | u16 phy_offset, control, eword, edata, block_crc; | |
741 | bool end_data = false; | |
742 | u16 list_offset, data_offset; | |
743 | u16 phy_data = 0; | |
744 | s32 ret_val = 0; | |
745 | u32 i; | |
746 | ||
6b73e10d | 747 | hw->phy.ops.read_reg(hw, MDIO_CTRL1, MDIO_MMD_PHYXS, &phy_data); |
c4900be0 DS |
748 | |
749 | /* reset the PHY and poll for completion */ | |
6b73e10d BH |
750 | hw->phy.ops.write_reg(hw, MDIO_CTRL1, MDIO_MMD_PHYXS, |
751 | (phy_data | MDIO_CTRL1_RESET)); | |
c4900be0 DS |
752 | |
753 | for (i = 0; i < 100; i++) { | |
6b73e10d BH |
754 | hw->phy.ops.read_reg(hw, MDIO_CTRL1, MDIO_MMD_PHYXS, |
755 | &phy_data); | |
756 | if ((phy_data & MDIO_CTRL1_RESET) == 0) | |
c4900be0 | 757 | break; |
032b4325 | 758 | usleep_range(10000, 20000); |
c4900be0 DS |
759 | } |
760 | ||
6b73e10d | 761 | if ((phy_data & MDIO_CTRL1_RESET) != 0) { |
c4900be0 DS |
762 | hw_dbg(hw, "PHY reset did not complete.\n"); |
763 | ret_val = IXGBE_ERR_PHY; | |
764 | goto out; | |
765 | } | |
766 | ||
767 | /* Get init offsets */ | |
768 | ret_val = ixgbe_get_sfp_init_sequence_offsets(hw, &list_offset, | |
769 | &data_offset); | |
770 | if (ret_val != 0) | |
771 | goto out; | |
772 | ||
773 | ret_val = hw->eeprom.ops.read(hw, data_offset, &block_crc); | |
774 | data_offset++; | |
775 | while (!end_data) { | |
776 | /* | |
777 | * Read control word from PHY init contents offset | |
778 | */ | |
779 | ret_val = hw->eeprom.ops.read(hw, data_offset, &eword); | |
780 | control = (eword & IXGBE_CONTROL_MASK_NL) >> | |
781 | IXGBE_CONTROL_SHIFT_NL; | |
782 | edata = eword & IXGBE_DATA_MASK_NL; | |
783 | switch (control) { | |
784 | case IXGBE_DELAY_NL: | |
785 | data_offset++; | |
786 | hw_dbg(hw, "DELAY: %d MS\n", edata); | |
032b4325 | 787 | usleep_range(edata * 1000, edata * 2000); |
c4900be0 DS |
788 | break; |
789 | case IXGBE_DATA_NL: | |
d6dbee86 | 790 | hw_dbg(hw, "DATA:\n"); |
c4900be0 DS |
791 | data_offset++; |
792 | hw->eeprom.ops.read(hw, data_offset++, | |
793 | &phy_offset); | |
794 | for (i = 0; i < edata; i++) { | |
795 | hw->eeprom.ops.read(hw, data_offset, &eword); | |
796 | hw->phy.ops.write_reg(hw, phy_offset, | |
6b73e10d | 797 | MDIO_MMD_PMAPMD, eword); |
c4900be0 DS |
798 | hw_dbg(hw, "Wrote %4.4x to %4.4x\n", eword, |
799 | phy_offset); | |
800 | data_offset++; | |
801 | phy_offset++; | |
802 | } | |
803 | break; | |
804 | case IXGBE_CONTROL_NL: | |
805 | data_offset++; | |
d6dbee86 | 806 | hw_dbg(hw, "CONTROL:\n"); |
c4900be0 DS |
807 | if (edata == IXGBE_CONTROL_EOL_NL) { |
808 | hw_dbg(hw, "EOL\n"); | |
809 | end_data = true; | |
810 | } else if (edata == IXGBE_CONTROL_SOL_NL) { | |
811 | hw_dbg(hw, "SOL\n"); | |
812 | } else { | |
813 | hw_dbg(hw, "Bad control value\n"); | |
814 | ret_val = IXGBE_ERR_PHY; | |
815 | goto out; | |
816 | } | |
817 | break; | |
818 | default: | |
819 | hw_dbg(hw, "Bad control type\n"); | |
820 | ret_val = IXGBE_ERR_PHY; | |
821 | goto out; | |
822 | } | |
823 | } | |
824 | ||
825 | out: | |
826 | return ret_val; | |
827 | } | |
828 | ||
829 | /** | |
76d97dd4 | 830 | * ixgbe_identify_sfp_module_generic - Identifies SFP modules |
c4900be0 DS |
831 | * @hw: pointer to hardware structure |
832 | * | |
76d97dd4 | 833 | * Searches for and identifies the SFP module and assigns appropriate PHY type. |
c4900be0 DS |
834 | **/ |
835 | s32 ixgbe_identify_sfp_module_generic(struct ixgbe_hw *hw) | |
836 | { | |
8ef78adc | 837 | struct ixgbe_adapter *adapter = hw->back; |
c4900be0 DS |
838 | s32 status = IXGBE_ERR_PHY_ADDR_INVALID; |
839 | u32 vendor_oui = 0; | |
553b4497 | 840 | enum ixgbe_sfp_type stored_sfp_type = hw->phy.sfp_type; |
c4900be0 DS |
841 | u8 identifier = 0; |
842 | u8 comp_codes_1g = 0; | |
843 | u8 comp_codes_10g = 0; | |
11afc1b1 | 844 | u8 oui_bytes[3] = {0, 0, 0}; |
537d58a0 | 845 | u8 cable_tech = 0; |
ea0a04df | 846 | u8 cable_spec = 0; |
11afc1b1 | 847 | u16 enforce_sfp = 0; |
c4900be0 | 848 | |
8ca783ab DS |
849 | if (hw->mac.ops.get_media_type(hw) != ixgbe_media_type_fiber) { |
850 | hw->phy.sfp_type = ixgbe_sfp_type_not_present; | |
851 | status = IXGBE_ERR_SFP_NOT_PRESENT; | |
852 | goto out; | |
853 | } | |
854 | ||
76d97dd4 ET |
855 | status = hw->phy.ops.read_i2c_eeprom(hw, |
856 | IXGBE_SFF_IDENTIFIER, | |
c4900be0 DS |
857 | &identifier); |
858 | ||
76d97dd4 ET |
859 | if (status == IXGBE_ERR_SWFW_SYNC || |
860 | status == IXGBE_ERR_I2C || | |
861 | status == IXGBE_ERR_SFP_NOT_PRESENT) | |
862 | goto err_read_i2c_eeprom; | |
c4900be0 | 863 | |
76d97dd4 ET |
864 | /* LAN ID is needed for sfp_type determination */ |
865 | hw->mac.ops.set_lan_id(hw); | |
866 | ||
867 | if (identifier != IXGBE_SFF_IDENTIFIER_SFP) { | |
868 | hw->phy.type = ixgbe_phy_sfp_unsupported; | |
869 | status = IXGBE_ERR_SFP_NOT_SUPPORTED; | |
870 | } else { | |
871 | status = hw->phy.ops.read_i2c_eeprom(hw, | |
872 | IXGBE_SFF_1GBE_COMP_CODES, | |
873 | &comp_codes_1g); | |
874 | ||
875 | if (status == IXGBE_ERR_SWFW_SYNC || | |
876 | status == IXGBE_ERR_I2C || | |
877 | status == IXGBE_ERR_SFP_NOT_PRESENT) | |
878 | goto err_read_i2c_eeprom; | |
879 | ||
880 | status = hw->phy.ops.read_i2c_eeprom(hw, | |
881 | IXGBE_SFF_10GBE_COMP_CODES, | |
882 | &comp_codes_10g); | |
883 | ||
884 | if (status == IXGBE_ERR_SWFW_SYNC || | |
885 | status == IXGBE_ERR_I2C || | |
886 | status == IXGBE_ERR_SFP_NOT_PRESENT) | |
887 | goto err_read_i2c_eeprom; | |
888 | status = hw->phy.ops.read_i2c_eeprom(hw, | |
889 | IXGBE_SFF_CABLE_TECHNOLOGY, | |
890 | &cable_tech); | |
891 | ||
892 | if (status == IXGBE_ERR_SWFW_SYNC || | |
893 | status == IXGBE_ERR_I2C || | |
894 | status == IXGBE_ERR_SFP_NOT_PRESENT) | |
895 | goto err_read_i2c_eeprom; | |
896 | ||
897 | /* ID Module | |
898 | * ========= | |
899 | * 0 SFP_DA_CU | |
900 | * 1 SFP_SR | |
901 | * 2 SFP_LR | |
902 | * 3 SFP_DA_CORE0 - 82599-specific | |
903 | * 4 SFP_DA_CORE1 - 82599-specific | |
904 | * 5 SFP_SR/LR_CORE0 - 82599-specific | |
905 | * 6 SFP_SR/LR_CORE1 - 82599-specific | |
906 | * 7 SFP_act_lmt_DA_CORE0 - 82599-specific | |
907 | * 8 SFP_act_lmt_DA_CORE1 - 82599-specific | |
908 | * 9 SFP_1g_cu_CORE0 - 82599-specific | |
909 | * 10 SFP_1g_cu_CORE1 - 82599-specific | |
910 | */ | |
11afc1b1 | 911 | if (hw->mac.type == ixgbe_mac_82598EB) { |
537d58a0 | 912 | if (cable_tech & IXGBE_SFF_DA_PASSIVE_CABLE) |
11afc1b1 PW |
913 | hw->phy.sfp_type = ixgbe_sfp_type_da_cu; |
914 | else if (comp_codes_10g & IXGBE_SFF_10GBASESR_CAPABLE) | |
915 | hw->phy.sfp_type = ixgbe_sfp_type_sr; | |
916 | else if (comp_codes_10g & IXGBE_SFF_10GBASELR_CAPABLE) | |
917 | hw->phy.sfp_type = ixgbe_sfp_type_lr; | |
918 | else | |
919 | hw->phy.sfp_type = ixgbe_sfp_type_unknown; | |
920 | } else if (hw->mac.type == ixgbe_mac_82599EB) { | |
ea0a04df | 921 | if (cable_tech & IXGBE_SFF_DA_PASSIVE_CABLE) { |
11afc1b1 PW |
922 | if (hw->bus.lan_id == 0) |
923 | hw->phy.sfp_type = | |
924 | ixgbe_sfp_type_da_cu_core0; | |
925 | else | |
926 | hw->phy.sfp_type = | |
927 | ixgbe_sfp_type_da_cu_core1; | |
ea0a04df DS |
928 | } else if (cable_tech & IXGBE_SFF_DA_ACTIVE_CABLE) { |
929 | hw->phy.ops.read_i2c_eeprom( | |
930 | hw, IXGBE_SFF_CABLE_SPEC_COMP, | |
931 | &cable_spec); | |
932 | if (cable_spec & | |
933 | IXGBE_SFF_DA_SPEC_ACTIVE_LIMITING) { | |
934 | if (hw->bus.lan_id == 0) | |
935 | hw->phy.sfp_type = | |
936 | ixgbe_sfp_type_da_act_lmt_core0; | |
937 | else | |
938 | hw->phy.sfp_type = | |
939 | ixgbe_sfp_type_da_act_lmt_core1; | |
940 | } else { | |
941 | hw->phy.sfp_type = | |
76d97dd4 | 942 | ixgbe_sfp_type_unknown; |
ea0a04df | 943 | } |
76d97dd4 ET |
944 | } else if (comp_codes_10g & |
945 | (IXGBE_SFF_10GBASESR_CAPABLE | | |
946 | IXGBE_SFF_10GBASELR_CAPABLE)) { | |
11afc1b1 PW |
947 | if (hw->bus.lan_id == 0) |
948 | hw->phy.sfp_type = | |
949 | ixgbe_sfp_type_srlr_core0; | |
950 | else | |
951 | hw->phy.sfp_type = | |
952 | ixgbe_sfp_type_srlr_core1; | |
76d97dd4 | 953 | } else if (comp_codes_1g & IXGBE_SFF_1GBASET_CAPABLE) { |
cb836a97 DS |
954 | if (hw->bus.lan_id == 0) |
955 | hw->phy.sfp_type = | |
956 | ixgbe_sfp_type_1g_cu_core0; | |
957 | else | |
958 | hw->phy.sfp_type = | |
959 | ixgbe_sfp_type_1g_cu_core1; | |
76d97dd4 | 960 | } else { |
11afc1b1 | 961 | hw->phy.sfp_type = ixgbe_sfp_type_unknown; |
76d97dd4 | 962 | } |
11afc1b1 | 963 | } |
c4900be0 | 964 | |
553b4497 PW |
965 | if (hw->phy.sfp_type != stored_sfp_type) |
966 | hw->phy.sfp_setup_needed = true; | |
967 | ||
968 | /* Determine if the SFP+ PHY is dual speed or not. */ | |
50ac58ba | 969 | hw->phy.multispeed_fiber = false; |
553b4497 PW |
970 | if (((comp_codes_1g & IXGBE_SFF_1GBASESX_CAPABLE) && |
971 | (comp_codes_10g & IXGBE_SFF_10GBASESR_CAPABLE)) || | |
972 | ((comp_codes_1g & IXGBE_SFF_1GBASELX_CAPABLE) && | |
973 | (comp_codes_10g & IXGBE_SFF_10GBASELR_CAPABLE))) | |
974 | hw->phy.multispeed_fiber = true; | |
975 | ||
c4900be0 | 976 | /* Determine PHY vendor */ |
04193058 | 977 | if (hw->phy.type != ixgbe_phy_nl) { |
c4900be0 | 978 | hw->phy.id = identifier; |
76d97dd4 | 979 | status = hw->phy.ops.read_i2c_eeprom(hw, |
c4900be0 DS |
980 | IXGBE_SFF_VENDOR_OUI_BYTE0, |
981 | &oui_bytes[0]); | |
76d97dd4 ET |
982 | |
983 | if (status == IXGBE_ERR_SWFW_SYNC || | |
984 | status == IXGBE_ERR_I2C || | |
985 | status == IXGBE_ERR_SFP_NOT_PRESENT) | |
986 | goto err_read_i2c_eeprom; | |
987 | ||
988 | status = hw->phy.ops.read_i2c_eeprom(hw, | |
c4900be0 DS |
989 | IXGBE_SFF_VENDOR_OUI_BYTE1, |
990 | &oui_bytes[1]); | |
76d97dd4 ET |
991 | |
992 | if (status == IXGBE_ERR_SWFW_SYNC || | |
993 | status == IXGBE_ERR_I2C || | |
994 | status == IXGBE_ERR_SFP_NOT_PRESENT) | |
995 | goto err_read_i2c_eeprom; | |
996 | ||
997 | status = hw->phy.ops.read_i2c_eeprom(hw, | |
c4900be0 DS |
998 | IXGBE_SFF_VENDOR_OUI_BYTE2, |
999 | &oui_bytes[2]); | |
1000 | ||
76d97dd4 ET |
1001 | if (status == IXGBE_ERR_SWFW_SYNC || |
1002 | status == IXGBE_ERR_I2C || | |
1003 | status == IXGBE_ERR_SFP_NOT_PRESENT) | |
1004 | goto err_read_i2c_eeprom; | |
1005 | ||
c4900be0 DS |
1006 | vendor_oui = |
1007 | ((oui_bytes[0] << IXGBE_SFF_VENDOR_OUI_BYTE0_SHIFT) | | |
1008 | (oui_bytes[1] << IXGBE_SFF_VENDOR_OUI_BYTE1_SHIFT) | | |
1009 | (oui_bytes[2] << IXGBE_SFF_VENDOR_OUI_BYTE2_SHIFT)); | |
1010 | ||
1011 | switch (vendor_oui) { | |
1012 | case IXGBE_SFF_VENDOR_OUI_TYCO: | |
537d58a0 | 1013 | if (cable_tech & IXGBE_SFF_DA_PASSIVE_CABLE) |
ea0a04df | 1014 | hw->phy.type = |
76d97dd4 | 1015 | ixgbe_phy_sfp_passive_tyco; |
c4900be0 DS |
1016 | break; |
1017 | case IXGBE_SFF_VENDOR_OUI_FTL: | |
ea0a04df DS |
1018 | if (cable_tech & IXGBE_SFF_DA_ACTIVE_CABLE) |
1019 | hw->phy.type = ixgbe_phy_sfp_ftl_active; | |
1020 | else | |
1021 | hw->phy.type = ixgbe_phy_sfp_ftl; | |
c4900be0 DS |
1022 | break; |
1023 | case IXGBE_SFF_VENDOR_OUI_AVAGO: | |
1024 | hw->phy.type = ixgbe_phy_sfp_avago; | |
1025 | break; | |
11afc1b1 PW |
1026 | case IXGBE_SFF_VENDOR_OUI_INTEL: |
1027 | hw->phy.type = ixgbe_phy_sfp_intel; | |
1028 | break; | |
c4900be0 | 1029 | default: |
537d58a0 | 1030 | if (cable_tech & IXGBE_SFF_DA_PASSIVE_CABLE) |
ea0a04df | 1031 | hw->phy.type = |
76d97dd4 | 1032 | ixgbe_phy_sfp_passive_unknown; |
ea0a04df DS |
1033 | else if (cable_tech & IXGBE_SFF_DA_ACTIVE_CABLE) |
1034 | hw->phy.type = | |
1035 | ixgbe_phy_sfp_active_unknown; | |
c4900be0 DS |
1036 | else |
1037 | hw->phy.type = ixgbe_phy_sfp_unknown; | |
1038 | break; | |
1039 | } | |
1040 | } | |
fa466e91 | 1041 | |
76d97dd4 | 1042 | /* Allow any DA cable vendor */ |
ea0a04df DS |
1043 | if (cable_tech & (IXGBE_SFF_DA_PASSIVE_CABLE | |
1044 | IXGBE_SFF_DA_ACTIVE_CABLE)) { | |
fa466e91 WJP |
1045 | status = 0; |
1046 | goto out; | |
1047 | } | |
1048 | ||
cb836a97 DS |
1049 | /* Verify supported 1G SFP modules */ |
1050 | if (comp_codes_10g == 0 && | |
1051 | !(hw->phy.sfp_type == ixgbe_sfp_type_1g_cu_core1 || | |
1052 | hw->phy.sfp_type == ixgbe_sfp_type_1g_cu_core0)) { | |
fa466e91 WJP |
1053 | hw->phy.type = ixgbe_phy_sfp_unsupported; |
1054 | status = IXGBE_ERR_SFP_NOT_SUPPORTED; | |
1055 | goto out; | |
1056 | } | |
1057 | ||
1058 | /* Anything else 82598-based is supported */ | |
1059 | if (hw->mac.type == ixgbe_mac_82598EB) { | |
11afc1b1 PW |
1060 | status = 0; |
1061 | goto out; | |
1062 | } | |
1063 | ||
04193058 | 1064 | hw->mac.ops.get_device_caps(hw, &enforce_sfp); |
cb836a97 DS |
1065 | if (!(enforce_sfp & IXGBE_DEVICE_CAPS_ALLOW_ANY_SFP) && |
1066 | !((hw->phy.sfp_type == ixgbe_sfp_type_1g_cu_core0) || | |
1067 | (hw->phy.sfp_type == ixgbe_sfp_type_1g_cu_core1))) { | |
11afc1b1 PW |
1068 | /* Make sure we're a supported PHY type */ |
1069 | if (hw->phy.type == ixgbe_phy_sfp_intel) { | |
1070 | status = 0; | |
1071 | } else { | |
8ef78adc PWJ |
1072 | if (hw->allow_unsupported_sfp) { |
1073 | e_warn(drv, "WARNING: Intel (R) Network Connections are quality tested using Intel (R) Ethernet Optics. Using untested modules is not supported and may cause unstable operation or damage to the module or the adapter. Intel Corporation is not responsible for any harm caused by using untested modules."); | |
1074 | status = 0; | |
1075 | } else { | |
1076 | hw_dbg(hw, | |
1077 | "SFP+ module not supported\n"); | |
1078 | hw->phy.type = | |
1079 | ixgbe_phy_sfp_unsupported; | |
1080 | status = IXGBE_ERR_SFP_NOT_SUPPORTED; | |
1081 | } | |
11afc1b1 PW |
1082 | } |
1083 | } else { | |
1084 | status = 0; | |
1085 | } | |
c4900be0 DS |
1086 | } |
1087 | ||
1088 | out: | |
1089 | return status; | |
76d97dd4 ET |
1090 | |
1091 | err_read_i2c_eeprom: | |
1092 | hw->phy.sfp_type = ixgbe_sfp_type_not_present; | |
1093 | if (hw->phy.type != ixgbe_phy_nl) { | |
1094 | hw->phy.id = 0; | |
1095 | hw->phy.type = ixgbe_phy_unknown; | |
1096 | } | |
1097 | return IXGBE_ERR_SFP_NOT_PRESENT; | |
c4900be0 DS |
1098 | } |
1099 | ||
1100 | /** | |
76d97dd4 | 1101 | * ixgbe_get_sfp_init_sequence_offsets - Provides offset of PHY init sequence |
c4900be0 DS |
1102 | * @hw: pointer to hardware structure |
1103 | * @list_offset: offset to the SFP ID list | |
1104 | * @data_offset: offset to the SFP data block | |
75f19c3c ET |
1105 | * |
1106 | * Checks the MAC's EEPROM to see if it supports a given SFP+ module type, if | |
1107 | * so it returns the offsets to the phy init sequence block. | |
c4900be0 DS |
1108 | **/ |
1109 | s32 ixgbe_get_sfp_init_sequence_offsets(struct ixgbe_hw *hw, | |
1110 | u16 *list_offset, | |
1111 | u16 *data_offset) | |
1112 | { | |
1113 | u16 sfp_id; | |
cb836a97 | 1114 | u16 sfp_type = hw->phy.sfp_type; |
c4900be0 DS |
1115 | |
1116 | if (hw->phy.sfp_type == ixgbe_sfp_type_unknown) | |
1117 | return IXGBE_ERR_SFP_NOT_SUPPORTED; | |
1118 | ||
1119 | if (hw->phy.sfp_type == ixgbe_sfp_type_not_present) | |
1120 | return IXGBE_ERR_SFP_NOT_PRESENT; | |
1121 | ||
1122 | if ((hw->device_id == IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM) && | |
1123 | (hw->phy.sfp_type == ixgbe_sfp_type_da_cu)) | |
1124 | return IXGBE_ERR_SFP_NOT_SUPPORTED; | |
1125 | ||
cb836a97 DS |
1126 | /* |
1127 | * Limiting active cables and 1G Phys must be initialized as | |
1128 | * SR modules | |
1129 | */ | |
1130 | if (sfp_type == ixgbe_sfp_type_da_act_lmt_core0 || | |
1131 | sfp_type == ixgbe_sfp_type_1g_cu_core0) | |
1132 | sfp_type = ixgbe_sfp_type_srlr_core0; | |
1133 | else if (sfp_type == ixgbe_sfp_type_da_act_lmt_core1 || | |
1134 | sfp_type == ixgbe_sfp_type_1g_cu_core1) | |
1135 | sfp_type = ixgbe_sfp_type_srlr_core1; | |
1136 | ||
c4900be0 DS |
1137 | /* Read offset to PHY init contents */ |
1138 | hw->eeprom.ops.read(hw, IXGBE_PHY_INIT_OFFSET_NL, list_offset); | |
1139 | ||
1140 | if ((!*list_offset) || (*list_offset == 0xFFFF)) | |
11afc1b1 | 1141 | return IXGBE_ERR_SFP_NO_INIT_SEQ_PRESENT; |
c4900be0 DS |
1142 | |
1143 | /* Shift offset to first ID word */ | |
1144 | (*list_offset)++; | |
1145 | ||
1146 | /* | |
1147 | * Find the matching SFP ID in the EEPROM | |
1148 | * and program the init sequence | |
1149 | */ | |
1150 | hw->eeprom.ops.read(hw, *list_offset, &sfp_id); | |
1151 | ||
1152 | while (sfp_id != IXGBE_PHY_INIT_END_NL) { | |
cb836a97 | 1153 | if (sfp_id == sfp_type) { |
c4900be0 DS |
1154 | (*list_offset)++; |
1155 | hw->eeprom.ops.read(hw, *list_offset, data_offset); | |
1156 | if ((!*data_offset) || (*data_offset == 0xFFFF)) { | |
1157 | hw_dbg(hw, "SFP+ module not supported\n"); | |
1158 | return IXGBE_ERR_SFP_NOT_SUPPORTED; | |
1159 | } else { | |
1160 | break; | |
1161 | } | |
1162 | } else { | |
1163 | (*list_offset) += 2; | |
1164 | if (hw->eeprom.ops.read(hw, *list_offset, &sfp_id)) | |
1165 | return IXGBE_ERR_PHY; | |
1166 | } | |
1167 | } | |
1168 | ||
1169 | if (sfp_id == IXGBE_PHY_INIT_END_NL) { | |
1170 | hw_dbg(hw, "No matching SFP+ module found\n"); | |
1171 | return IXGBE_ERR_SFP_NOT_SUPPORTED; | |
1172 | } | |
1173 | ||
1174 | return 0; | |
1175 | } | |
1176 | ||
11afc1b1 PW |
1177 | /** |
1178 | * ixgbe_read_i2c_eeprom_generic - Reads 8 bit EEPROM word over I2C interface | |
1179 | * @hw: pointer to hardware structure | |
1180 | * @byte_offset: EEPROM byte offset to read | |
1181 | * @eeprom_data: value read | |
1182 | * | |
1183 | * Performs byte read operation to SFP module's EEPROM over I2C interface. | |
1184 | **/ | |
1185 | s32 ixgbe_read_i2c_eeprom_generic(struct ixgbe_hw *hw, u8 byte_offset, | |
1186 | u8 *eeprom_data) | |
1187 | { | |
1188 | return hw->phy.ops.read_i2c_byte(hw, byte_offset, | |
1189 | IXGBE_I2C_EEPROM_DEV_ADDR, | |
1190 | eeprom_data); | |
1191 | } | |
1192 | ||
1193 | /** | |
1194 | * ixgbe_write_i2c_eeprom_generic - Writes 8 bit EEPROM word over I2C interface | |
1195 | * @hw: pointer to hardware structure | |
1196 | * @byte_offset: EEPROM byte offset to write | |
1197 | * @eeprom_data: value to write | |
1198 | * | |
1199 | * Performs byte write operation to SFP module's EEPROM over I2C interface. | |
1200 | **/ | |
1201 | s32 ixgbe_write_i2c_eeprom_generic(struct ixgbe_hw *hw, u8 byte_offset, | |
1202 | u8 eeprom_data) | |
1203 | { | |
1204 | return hw->phy.ops.write_i2c_byte(hw, byte_offset, | |
1205 | IXGBE_I2C_EEPROM_DEV_ADDR, | |
1206 | eeprom_data); | |
1207 | } | |
1208 | ||
1209 | /** | |
1210 | * ixgbe_read_i2c_byte_generic - Reads 8 bit word over I2C | |
1211 | * @hw: pointer to hardware structure | |
1212 | * @byte_offset: byte offset to read | |
1213 | * @data: value read | |
1214 | * | |
1215 | * Performs byte read operation to SFP module's EEPROM over I2C interface at | |
3fbaa3ac | 1216 | * a specified device address. |
11afc1b1 PW |
1217 | **/ |
1218 | s32 ixgbe_read_i2c_byte_generic(struct ixgbe_hw *hw, u8 byte_offset, | |
1219 | u8 dev_addr, u8 *data) | |
1220 | { | |
1221 | s32 status = 0; | |
75f19c3c | 1222 | u32 max_retry = 10; |
11afc1b1 | 1223 | u32 retry = 0; |
75f19c3c | 1224 | u16 swfw_mask = 0; |
3db1cd5c | 1225 | bool nack = true; |
3fbaa3ac | 1226 | *data = 0; |
11afc1b1 | 1227 | |
75f19c3c ET |
1228 | if (IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1) |
1229 | swfw_mask = IXGBE_GSSR_PHY1_SM; | |
1230 | else | |
1231 | swfw_mask = IXGBE_GSSR_PHY0_SM; | |
1232 | ||
11afc1b1 | 1233 | do { |
6d980c3e | 1234 | if (hw->mac.ops.acquire_swfw_sync(hw, swfw_mask) != 0) { |
75f19c3c ET |
1235 | status = IXGBE_ERR_SWFW_SYNC; |
1236 | goto read_byte_out; | |
1237 | } | |
1238 | ||
11afc1b1 PW |
1239 | ixgbe_i2c_start(hw); |
1240 | ||
1241 | /* Device Address and write indication */ | |
1242 | status = ixgbe_clock_out_i2c_byte(hw, dev_addr); | |
1243 | if (status != 0) | |
1244 | goto fail; | |
1245 | ||
1246 | status = ixgbe_get_i2c_ack(hw); | |
1247 | if (status != 0) | |
1248 | goto fail; | |
1249 | ||
1250 | status = ixgbe_clock_out_i2c_byte(hw, byte_offset); | |
1251 | if (status != 0) | |
1252 | goto fail; | |
1253 | ||
1254 | status = ixgbe_get_i2c_ack(hw); | |
1255 | if (status != 0) | |
1256 | goto fail; | |
1257 | ||
1258 | ixgbe_i2c_start(hw); | |
1259 | ||
1260 | /* Device Address and read indication */ | |
1261 | status = ixgbe_clock_out_i2c_byte(hw, (dev_addr | 0x1)); | |
1262 | if (status != 0) | |
1263 | goto fail; | |
1264 | ||
1265 | status = ixgbe_get_i2c_ack(hw); | |
1266 | if (status != 0) | |
1267 | goto fail; | |
1268 | ||
1269 | status = ixgbe_clock_in_i2c_byte(hw, data); | |
1270 | if (status != 0) | |
1271 | goto fail; | |
1272 | ||
1273 | status = ixgbe_clock_out_i2c_bit(hw, nack); | |
1274 | if (status != 0) | |
1275 | goto fail; | |
1276 | ||
1277 | ixgbe_i2c_stop(hw); | |
1278 | break; | |
1279 | ||
1280 | fail: | |
6d980c3e | 1281 | hw->mac.ops.release_swfw_sync(hw, swfw_mask); |
75f19c3c | 1282 | msleep(100); |
11afc1b1 PW |
1283 | ixgbe_i2c_bus_clear(hw); |
1284 | retry++; | |
1285 | if (retry < max_retry) | |
1286 | hw_dbg(hw, "I2C byte read error - Retrying.\n"); | |
1287 | else | |
1288 | hw_dbg(hw, "I2C byte read error.\n"); | |
1289 | ||
1290 | } while (retry < max_retry); | |
1291 | ||
6d980c3e | 1292 | hw->mac.ops.release_swfw_sync(hw, swfw_mask); |
75f19c3c ET |
1293 | |
1294 | read_byte_out: | |
11afc1b1 PW |
1295 | return status; |
1296 | } | |
1297 | ||
1298 | /** | |
1299 | * ixgbe_write_i2c_byte_generic - Writes 8 bit word over I2C | |
1300 | * @hw: pointer to hardware structure | |
1301 | * @byte_offset: byte offset to write | |
1302 | * @data: value to write | |
1303 | * | |
1304 | * Performs byte write operation to SFP module's EEPROM over I2C interface at | |
1305 | * a specified device address. | |
1306 | **/ | |
1307 | s32 ixgbe_write_i2c_byte_generic(struct ixgbe_hw *hw, u8 byte_offset, | |
1308 | u8 dev_addr, u8 data) | |
1309 | { | |
1310 | s32 status = 0; | |
1311 | u32 max_retry = 1; | |
1312 | u32 retry = 0; | |
75f19c3c ET |
1313 | u16 swfw_mask = 0; |
1314 | ||
1315 | if (IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1) | |
1316 | swfw_mask = IXGBE_GSSR_PHY1_SM; | |
1317 | else | |
1318 | swfw_mask = IXGBE_GSSR_PHY0_SM; | |
1319 | ||
6d980c3e | 1320 | if (hw->mac.ops.acquire_swfw_sync(hw, swfw_mask) != 0) { |
75f19c3c ET |
1321 | status = IXGBE_ERR_SWFW_SYNC; |
1322 | goto write_byte_out; | |
1323 | } | |
11afc1b1 PW |
1324 | |
1325 | do { | |
1326 | ixgbe_i2c_start(hw); | |
1327 | ||
1328 | status = ixgbe_clock_out_i2c_byte(hw, dev_addr); | |
1329 | if (status != 0) | |
1330 | goto fail; | |
1331 | ||
1332 | status = ixgbe_get_i2c_ack(hw); | |
1333 | if (status != 0) | |
1334 | goto fail; | |
1335 | ||
1336 | status = ixgbe_clock_out_i2c_byte(hw, byte_offset); | |
1337 | if (status != 0) | |
1338 | goto fail; | |
1339 | ||
1340 | status = ixgbe_get_i2c_ack(hw); | |
1341 | if (status != 0) | |
1342 | goto fail; | |
1343 | ||
1344 | status = ixgbe_clock_out_i2c_byte(hw, data); | |
1345 | if (status != 0) | |
1346 | goto fail; | |
1347 | ||
1348 | status = ixgbe_get_i2c_ack(hw); | |
1349 | if (status != 0) | |
1350 | goto fail; | |
1351 | ||
1352 | ixgbe_i2c_stop(hw); | |
1353 | break; | |
1354 | ||
1355 | fail: | |
1356 | ixgbe_i2c_bus_clear(hw); | |
1357 | retry++; | |
1358 | if (retry < max_retry) | |
1359 | hw_dbg(hw, "I2C byte write error - Retrying.\n"); | |
1360 | else | |
1361 | hw_dbg(hw, "I2C byte write error.\n"); | |
1362 | } while (retry < max_retry); | |
1363 | ||
6d980c3e | 1364 | hw->mac.ops.release_swfw_sync(hw, swfw_mask); |
75f19c3c ET |
1365 | |
1366 | write_byte_out: | |
11afc1b1 PW |
1367 | return status; |
1368 | } | |
1369 | ||
1370 | /** | |
1371 | * ixgbe_i2c_start - Sets I2C start condition | |
1372 | * @hw: pointer to hardware structure | |
1373 | * | |
1374 | * Sets I2C start condition (High -> Low on SDA while SCL is High) | |
1375 | **/ | |
1376 | static void ixgbe_i2c_start(struct ixgbe_hw *hw) | |
1377 | { | |
1378 | u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL); | |
1379 | ||
1380 | /* Start condition must begin with data and clock high */ | |
1381 | ixgbe_set_i2c_data(hw, &i2cctl, 1); | |
1382 | ixgbe_raise_i2c_clk(hw, &i2cctl); | |
1383 | ||
1384 | /* Setup time for start condition (4.7us) */ | |
1385 | udelay(IXGBE_I2C_T_SU_STA); | |
1386 | ||
1387 | ixgbe_set_i2c_data(hw, &i2cctl, 0); | |
1388 | ||
1389 | /* Hold time for start condition (4us) */ | |
1390 | udelay(IXGBE_I2C_T_HD_STA); | |
1391 | ||
1392 | ixgbe_lower_i2c_clk(hw, &i2cctl); | |
1393 | ||
1394 | /* Minimum low period of clock is 4.7 us */ | |
1395 | udelay(IXGBE_I2C_T_LOW); | |
1396 | ||
1397 | } | |
1398 | ||
1399 | /** | |
1400 | * ixgbe_i2c_stop - Sets I2C stop condition | |
1401 | * @hw: pointer to hardware structure | |
1402 | * | |
1403 | * Sets I2C stop condition (Low -> High on SDA while SCL is High) | |
1404 | **/ | |
1405 | static void ixgbe_i2c_stop(struct ixgbe_hw *hw) | |
1406 | { | |
1407 | u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL); | |
1408 | ||
1409 | /* Stop condition must begin with data low and clock high */ | |
1410 | ixgbe_set_i2c_data(hw, &i2cctl, 0); | |
1411 | ixgbe_raise_i2c_clk(hw, &i2cctl); | |
1412 | ||
1413 | /* Setup time for stop condition (4us) */ | |
1414 | udelay(IXGBE_I2C_T_SU_STO); | |
1415 | ||
1416 | ixgbe_set_i2c_data(hw, &i2cctl, 1); | |
1417 | ||
1418 | /* bus free time between stop and start (4.7us)*/ | |
1419 | udelay(IXGBE_I2C_T_BUF); | |
1420 | } | |
1421 | ||
1422 | /** | |
1423 | * ixgbe_clock_in_i2c_byte - Clocks in one byte via I2C | |
1424 | * @hw: pointer to hardware structure | |
1425 | * @data: data byte to clock in | |
1426 | * | |
1427 | * Clocks in one byte data via I2C data/clock | |
1428 | **/ | |
1429 | static s32 ixgbe_clock_in_i2c_byte(struct ixgbe_hw *hw, u8 *data) | |
1430 | { | |
11afc1b1 | 1431 | s32 i; |
3db1cd5c | 1432 | bool bit = false; |
11afc1b1 PW |
1433 | |
1434 | for (i = 7; i >= 0; i--) { | |
e1befd77 | 1435 | ixgbe_clock_in_i2c_bit(hw, &bit); |
11afc1b1 | 1436 | *data |= bit << i; |
11afc1b1 PW |
1437 | } |
1438 | ||
e1befd77 | 1439 | return 0; |
11afc1b1 PW |
1440 | } |
1441 | ||
1442 | /** | |
1443 | * ixgbe_clock_out_i2c_byte - Clocks out one byte via I2C | |
1444 | * @hw: pointer to hardware structure | |
1445 | * @data: data byte clocked out | |
1446 | * | |
1447 | * Clocks out one byte data via I2C data/clock | |
1448 | **/ | |
1449 | static s32 ixgbe_clock_out_i2c_byte(struct ixgbe_hw *hw, u8 data) | |
1450 | { | |
1451 | s32 status = 0; | |
1452 | s32 i; | |
1453 | u32 i2cctl; | |
3db1cd5c | 1454 | bool bit = false; |
11afc1b1 PW |
1455 | |
1456 | for (i = 7; i >= 0; i--) { | |
1457 | bit = (data >> i) & 0x1; | |
1458 | status = ixgbe_clock_out_i2c_bit(hw, bit); | |
1459 | ||
1460 | if (status != 0) | |
1461 | break; | |
1462 | } | |
1463 | ||
1464 | /* Release SDA line (set high) */ | |
1465 | i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL); | |
1466 | i2cctl |= IXGBE_I2C_DATA_OUT; | |
1467 | IXGBE_WRITE_REG(hw, IXGBE_I2CCTL, i2cctl); | |
176f950d | 1468 | IXGBE_WRITE_FLUSH(hw); |
11afc1b1 PW |
1469 | |
1470 | return status; | |
1471 | } | |
1472 | ||
1473 | /** | |
1474 | * ixgbe_get_i2c_ack - Polls for I2C ACK | |
1475 | * @hw: pointer to hardware structure | |
1476 | * | |
1477 | * Clocks in/out one bit via I2C data/clock | |
1478 | **/ | |
1479 | static s32 ixgbe_get_i2c_ack(struct ixgbe_hw *hw) | |
1480 | { | |
e1befd77 | 1481 | s32 status = 0; |
11afc1b1 PW |
1482 | u32 i = 0; |
1483 | u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL); | |
1484 | u32 timeout = 10; | |
3db1cd5c | 1485 | bool ack = true; |
11afc1b1 | 1486 | |
e1befd77 | 1487 | ixgbe_raise_i2c_clk(hw, &i2cctl); |
11afc1b1 | 1488 | |
11afc1b1 PW |
1489 | |
1490 | /* Minimum high period of clock is 4us */ | |
1491 | udelay(IXGBE_I2C_T_HIGH); | |
1492 | ||
1493 | /* Poll for ACK. Note that ACK in I2C spec is | |
1494 | * transition from 1 to 0 */ | |
1495 | for (i = 0; i < timeout; i++) { | |
1496 | i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL); | |
1497 | ack = ixgbe_get_i2c_data(&i2cctl); | |
1498 | ||
1499 | udelay(1); | |
1500 | if (ack == 0) | |
1501 | break; | |
1502 | } | |
1503 | ||
1504 | if (ack == 1) { | |
1505 | hw_dbg(hw, "I2C ack was not received.\n"); | |
1506 | status = IXGBE_ERR_I2C; | |
1507 | } | |
1508 | ||
1509 | ixgbe_lower_i2c_clk(hw, &i2cctl); | |
1510 | ||
1511 | /* Minimum low period of clock is 4.7 us */ | |
1512 | udelay(IXGBE_I2C_T_LOW); | |
1513 | ||
11afc1b1 PW |
1514 | return status; |
1515 | } | |
1516 | ||
1517 | /** | |
1518 | * ixgbe_clock_in_i2c_bit - Clocks in one bit via I2C data/clock | |
1519 | * @hw: pointer to hardware structure | |
1520 | * @data: read data value | |
1521 | * | |
1522 | * Clocks in one bit via I2C data/clock | |
1523 | **/ | |
1524 | static s32 ixgbe_clock_in_i2c_bit(struct ixgbe_hw *hw, bool *data) | |
1525 | { | |
11afc1b1 PW |
1526 | u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL); |
1527 | ||
e1befd77 | 1528 | ixgbe_raise_i2c_clk(hw, &i2cctl); |
11afc1b1 PW |
1529 | |
1530 | /* Minimum high period of clock is 4us */ | |
1531 | udelay(IXGBE_I2C_T_HIGH); | |
1532 | ||
1533 | i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL); | |
1534 | *data = ixgbe_get_i2c_data(&i2cctl); | |
1535 | ||
1536 | ixgbe_lower_i2c_clk(hw, &i2cctl); | |
1537 | ||
1538 | /* Minimum low period of clock is 4.7 us */ | |
1539 | udelay(IXGBE_I2C_T_LOW); | |
1540 | ||
e1befd77 | 1541 | return 0; |
11afc1b1 PW |
1542 | } |
1543 | ||
1544 | /** | |
1545 | * ixgbe_clock_out_i2c_bit - Clocks in/out one bit via I2C data/clock | |
1546 | * @hw: pointer to hardware structure | |
1547 | * @data: data value to write | |
1548 | * | |
1549 | * Clocks out one bit via I2C data/clock | |
1550 | **/ | |
1551 | static s32 ixgbe_clock_out_i2c_bit(struct ixgbe_hw *hw, bool data) | |
1552 | { | |
1553 | s32 status; | |
1554 | u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL); | |
1555 | ||
1556 | status = ixgbe_set_i2c_data(hw, &i2cctl, data); | |
1557 | if (status == 0) { | |
e1befd77 | 1558 | ixgbe_raise_i2c_clk(hw, &i2cctl); |
11afc1b1 PW |
1559 | |
1560 | /* Minimum high period of clock is 4us */ | |
1561 | udelay(IXGBE_I2C_T_HIGH); | |
1562 | ||
1563 | ixgbe_lower_i2c_clk(hw, &i2cctl); | |
1564 | ||
1565 | /* Minimum low period of clock is 4.7 us. | |
1566 | * This also takes care of the data hold time. | |
1567 | */ | |
1568 | udelay(IXGBE_I2C_T_LOW); | |
1569 | } else { | |
1570 | status = IXGBE_ERR_I2C; | |
1571 | hw_dbg(hw, "I2C data was not set to %X\n", data); | |
1572 | } | |
1573 | ||
1574 | return status; | |
1575 | } | |
1576 | /** | |
1577 | * ixgbe_raise_i2c_clk - Raises the I2C SCL clock | |
1578 | * @hw: pointer to hardware structure | |
1579 | * @i2cctl: Current value of I2CCTL register | |
1580 | * | |
1581 | * Raises the I2C clock line '0'->'1' | |
1582 | **/ | |
e1befd77 | 1583 | static void ixgbe_raise_i2c_clk(struct ixgbe_hw *hw, u32 *i2cctl) |
11afc1b1 | 1584 | { |
8f56e4b9 DS |
1585 | u32 i = 0; |
1586 | u32 timeout = IXGBE_I2C_CLOCK_STRETCHING_TIMEOUT; | |
1587 | u32 i2cctl_r = 0; | |
11afc1b1 | 1588 | |
8f56e4b9 DS |
1589 | for (i = 0; i < timeout; i++) { |
1590 | *i2cctl |= IXGBE_I2C_CLK_OUT; | |
1591 | IXGBE_WRITE_REG(hw, IXGBE_I2CCTL, *i2cctl); | |
1592 | IXGBE_WRITE_FLUSH(hw); | |
1593 | /* SCL rise time (1000ns) */ | |
1594 | udelay(IXGBE_I2C_T_RISE); | |
1595 | ||
1596 | i2cctl_r = IXGBE_READ_REG(hw, IXGBE_I2CCTL); | |
1597 | if (i2cctl_r & IXGBE_I2C_CLK_IN) | |
1598 | break; | |
1599 | } | |
11afc1b1 PW |
1600 | } |
1601 | ||
1602 | /** | |
1603 | * ixgbe_lower_i2c_clk - Lowers the I2C SCL clock | |
1604 | * @hw: pointer to hardware structure | |
1605 | * @i2cctl: Current value of I2CCTL register | |
1606 | * | |
1607 | * Lowers the I2C clock line '1'->'0' | |
1608 | **/ | |
1609 | static void ixgbe_lower_i2c_clk(struct ixgbe_hw *hw, u32 *i2cctl) | |
1610 | { | |
1611 | ||
1612 | *i2cctl &= ~IXGBE_I2C_CLK_OUT; | |
1613 | ||
1614 | IXGBE_WRITE_REG(hw, IXGBE_I2CCTL, *i2cctl); | |
945a5151 | 1615 | IXGBE_WRITE_FLUSH(hw); |
11afc1b1 PW |
1616 | |
1617 | /* SCL fall time (300ns) */ | |
1618 | udelay(IXGBE_I2C_T_FALL); | |
1619 | } | |
1620 | ||
1621 | /** | |
1622 | * ixgbe_set_i2c_data - Sets the I2C data bit | |
1623 | * @hw: pointer to hardware structure | |
1624 | * @i2cctl: Current value of I2CCTL register | |
1625 | * @data: I2C data value (0 or 1) to set | |
1626 | * | |
1627 | * Sets the I2C data bit | |
1628 | **/ | |
1629 | static s32 ixgbe_set_i2c_data(struct ixgbe_hw *hw, u32 *i2cctl, bool data) | |
1630 | { | |
1631 | s32 status = 0; | |
1632 | ||
1633 | if (data) | |
1634 | *i2cctl |= IXGBE_I2C_DATA_OUT; | |
1635 | else | |
1636 | *i2cctl &= ~IXGBE_I2C_DATA_OUT; | |
1637 | ||
1638 | IXGBE_WRITE_REG(hw, IXGBE_I2CCTL, *i2cctl); | |
945a5151 | 1639 | IXGBE_WRITE_FLUSH(hw); |
11afc1b1 PW |
1640 | |
1641 | /* Data rise/fall (1000ns/300ns) and set-up time (250ns) */ | |
1642 | udelay(IXGBE_I2C_T_RISE + IXGBE_I2C_T_FALL + IXGBE_I2C_T_SU_DATA); | |
1643 | ||
1644 | /* Verify data was set correctly */ | |
1645 | *i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL); | |
1646 | if (data != ixgbe_get_i2c_data(i2cctl)) { | |
1647 | status = IXGBE_ERR_I2C; | |
1648 | hw_dbg(hw, "Error - I2C data was not set to %X.\n", data); | |
1649 | } | |
1650 | ||
1651 | return status; | |
1652 | } | |
1653 | ||
1654 | /** | |
1655 | * ixgbe_get_i2c_data - Reads the I2C SDA data bit | |
1656 | * @hw: pointer to hardware structure | |
1657 | * @i2cctl: Current value of I2CCTL register | |
1658 | * | |
1659 | * Returns the I2C data bit value | |
1660 | **/ | |
1661 | static bool ixgbe_get_i2c_data(u32 *i2cctl) | |
1662 | { | |
1663 | bool data; | |
1664 | ||
1665 | if (*i2cctl & IXGBE_I2C_DATA_IN) | |
3db1cd5c | 1666 | data = true; |
11afc1b1 | 1667 | else |
3db1cd5c | 1668 | data = false; |
11afc1b1 PW |
1669 | |
1670 | return data; | |
1671 | } | |
1672 | ||
1673 | /** | |
1674 | * ixgbe_i2c_bus_clear - Clears the I2C bus | |
1675 | * @hw: pointer to hardware structure | |
1676 | * | |
1677 | * Clears the I2C bus by sending nine clock pulses. | |
1678 | * Used when data line is stuck low. | |
1679 | **/ | |
1680 | static void ixgbe_i2c_bus_clear(struct ixgbe_hw *hw) | |
1681 | { | |
1682 | u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL); | |
1683 | u32 i; | |
1684 | ||
75f19c3c ET |
1685 | ixgbe_i2c_start(hw); |
1686 | ||
11afc1b1 PW |
1687 | ixgbe_set_i2c_data(hw, &i2cctl, 1); |
1688 | ||
1689 | for (i = 0; i < 9; i++) { | |
1690 | ixgbe_raise_i2c_clk(hw, &i2cctl); | |
1691 | ||
1692 | /* Min high period of clock is 4us */ | |
1693 | udelay(IXGBE_I2C_T_HIGH); | |
1694 | ||
1695 | ixgbe_lower_i2c_clk(hw, &i2cctl); | |
1696 | ||
1697 | /* Min low period of clock is 4.7us*/ | |
1698 | udelay(IXGBE_I2C_T_LOW); | |
1699 | } | |
1700 | ||
75f19c3c ET |
1701 | ixgbe_i2c_start(hw); |
1702 | ||
11afc1b1 PW |
1703 | /* Put the i2c bus back to default state */ |
1704 | ixgbe_i2c_stop(hw); | |
1705 | } | |
1706 | ||
119fc60a | 1707 | /** |
25985edc | 1708 | * ixgbe_tn_check_overtemp - Checks if an overtemp occurred. |
119fc60a MC |
1709 | * @hw: pointer to hardware structure |
1710 | * | |
1711 | * Checks if the LASI temp alarm status was triggered due to overtemp | |
1712 | **/ | |
1713 | s32 ixgbe_tn_check_overtemp(struct ixgbe_hw *hw) | |
1714 | { | |
1715 | s32 status = 0; | |
1716 | u16 phy_data = 0; | |
1717 | ||
1718 | if (hw->device_id != IXGBE_DEV_ID_82599_T3_LOM) | |
1719 | goto out; | |
1720 | ||
1721 | /* Check that the LASI temp alarm status was triggered */ | |
1722 | hw->phy.ops.read_reg(hw, IXGBE_TN_LASI_STATUS_REG, | |
1723 | MDIO_MMD_PMAPMD, &phy_data); | |
1724 | ||
1725 | if (!(phy_data & IXGBE_TN_LASI_STATUS_TEMP_ALARM)) | |
1726 | goto out; | |
1727 | ||
1728 | status = IXGBE_ERR_OVERTEMP; | |
1729 | out: | |
1730 | return status; | |
1731 | } |