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9a799d71 AK |
1 | /******************************************************************************* |
2 | ||
3 | Intel 10 Gigabit PCI Express Linux driver | |
8c47eaa7 | 4 | Copyright(c) 1999 - 2010 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); | |
42 | static s32 ixgbe_raise_i2c_clk(struct ixgbe_hw *hw, u32 *i2cctl); | |
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; | |
60 | ||
c44ade9e JB |
61 | if (hw->phy.type == ixgbe_phy_unknown) { |
62 | for (phy_addr = 0; phy_addr < IXGBE_MAX_PHY_ADDR; phy_addr++) { | |
63d6e1d8 | 63 | hw->phy.mdio.prtad = phy_addr; |
6b73e10d | 64 | if (mdio45_probe(&hw->phy.mdio, phy_addr) == 0) { |
c44ade9e JB |
65 | ixgbe_get_phy_id(hw); |
66 | hw->phy.type = | |
67 | ixgbe_get_phy_type_from_id(hw->phy.id); | |
68 | status = 0; | |
69 | break; | |
70 | } | |
9a799d71 | 71 | } |
63d6e1d8 DS |
72 | /* clear value if nothing found */ |
73 | hw->phy.mdio.prtad = 0; | |
c44ade9e JB |
74 | } else { |
75 | status = 0; | |
9a799d71 | 76 | } |
c44ade9e | 77 | |
9a799d71 AK |
78 | return status; |
79 | } | |
80 | ||
9a799d71 AK |
81 | /** |
82 | * ixgbe_get_phy_id - Get the phy type | |
83 | * @hw: pointer to hardware structure | |
84 | * | |
85 | **/ | |
86 | static s32 ixgbe_get_phy_id(struct ixgbe_hw *hw) | |
87 | { | |
88 | u32 status; | |
89 | u16 phy_id_high = 0; | |
90 | u16 phy_id_low = 0; | |
91 | ||
6b73e10d | 92 | status = hw->phy.ops.read_reg(hw, MDIO_DEVID1, MDIO_MMD_PMAPMD, |
c44ade9e | 93 | &phy_id_high); |
9a799d71 AK |
94 | |
95 | if (status == 0) { | |
96 | hw->phy.id = (u32)(phy_id_high << 16); | |
6b73e10d | 97 | status = hw->phy.ops.read_reg(hw, MDIO_DEVID2, MDIO_MMD_PMAPMD, |
c44ade9e | 98 | &phy_id_low); |
9a799d71 AK |
99 | hw->phy.id |= (u32)(phy_id_low & IXGBE_PHY_REVISION_MASK); |
100 | hw->phy.revision = (u32)(phy_id_low & ~IXGBE_PHY_REVISION_MASK); | |
101 | } | |
9a799d71 AK |
102 | return status; |
103 | } | |
104 | ||
105 | /** | |
106 | * ixgbe_get_phy_type_from_id - Get the phy type | |
107 | * @hw: pointer to hardware structure | |
108 | * | |
109 | **/ | |
110 | static enum ixgbe_phy_type ixgbe_get_phy_type_from_id(u32 phy_id) | |
111 | { | |
112 | enum ixgbe_phy_type phy_type; | |
113 | ||
114 | switch (phy_id) { | |
0befdb3e JB |
115 | case TN1010_PHY_ID: |
116 | phy_type = ixgbe_phy_tn; | |
117 | break; | |
fe15e8e1 DS |
118 | case AQ1202_PHY_ID: |
119 | phy_type = ixgbe_phy_aq; | |
120 | break; | |
9a799d71 AK |
121 | case QT2022_PHY_ID: |
122 | phy_type = ixgbe_phy_qt; | |
123 | break; | |
c4900be0 DS |
124 | case ATH_PHY_ID: |
125 | phy_type = ixgbe_phy_nl; | |
126 | break; | |
9a799d71 AK |
127 | default: |
128 | phy_type = ixgbe_phy_unknown; | |
129 | break; | |
130 | } | |
131 | ||
132 | return phy_type; | |
133 | } | |
134 | ||
135 | /** | |
c44ade9e | 136 | * ixgbe_reset_phy_generic - Performs a PHY reset |
9a799d71 AK |
137 | * @hw: pointer to hardware structure |
138 | **/ | |
c44ade9e | 139 | s32 ixgbe_reset_phy_generic(struct ixgbe_hw *hw) |
9a799d71 | 140 | { |
119fc60a MC |
141 | /* Don't reset PHY if it's shut down due to overtemp. */ |
142 | if (!hw->phy.reset_if_overtemp && | |
143 | (IXGBE_ERR_OVERTEMP == hw->phy.ops.check_overtemp(hw))) | |
144 | return 0; | |
145 | ||
9a799d71 AK |
146 | /* |
147 | * Perform soft PHY reset to the PHY_XS. | |
148 | * This will cause a soft reset to the PHY | |
149 | */ | |
6b73e10d BH |
150 | return hw->phy.ops.write_reg(hw, MDIO_CTRL1, MDIO_MMD_PHYXS, |
151 | MDIO_CTRL1_RESET); | |
9a799d71 AK |
152 | } |
153 | ||
154 | /** | |
c44ade9e | 155 | * ixgbe_read_phy_reg_generic - Reads a value from a specified PHY register |
9a799d71 AK |
156 | * @hw: pointer to hardware structure |
157 | * @reg_addr: 32 bit address of PHY register to read | |
158 | * @phy_data: Pointer to read data from PHY register | |
159 | **/ | |
c44ade9e JB |
160 | s32 ixgbe_read_phy_reg_generic(struct ixgbe_hw *hw, u32 reg_addr, |
161 | u32 device_type, u16 *phy_data) | |
9a799d71 AK |
162 | { |
163 | u32 command; | |
164 | u32 i; | |
9a799d71 AK |
165 | u32 data; |
166 | s32 status = 0; | |
167 | u16 gssr; | |
168 | ||
169 | if (IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1) | |
170 | gssr = IXGBE_GSSR_PHY1_SM; | |
171 | else | |
172 | gssr = IXGBE_GSSR_PHY0_SM; | |
173 | ||
174 | if (ixgbe_acquire_swfw_sync(hw, gssr) != 0) | |
175 | status = IXGBE_ERR_SWFW_SYNC; | |
176 | ||
177 | if (status == 0) { | |
178 | /* Setup and write the address cycle command */ | |
179 | command = ((reg_addr << IXGBE_MSCA_NP_ADDR_SHIFT) | | |
c44ade9e | 180 | (device_type << IXGBE_MSCA_DEV_TYPE_SHIFT) | |
6b73e10d | 181 | (hw->phy.mdio.prtad << IXGBE_MSCA_PHY_ADDR_SHIFT) | |
c44ade9e | 182 | (IXGBE_MSCA_ADDR_CYCLE | IXGBE_MSCA_MDI_COMMAND)); |
9a799d71 AK |
183 | |
184 | IXGBE_WRITE_REG(hw, IXGBE_MSCA, command); | |
185 | ||
186 | /* | |
187 | * Check every 10 usec to see if the address cycle completed. | |
188 | * The MDI Command bit will clear when the operation is | |
189 | * complete | |
190 | */ | |
c44ade9e | 191 | for (i = 0; i < IXGBE_MDIO_COMMAND_TIMEOUT; i++) { |
9a799d71 AK |
192 | udelay(10); |
193 | ||
194 | command = IXGBE_READ_REG(hw, IXGBE_MSCA); | |
195 | ||
196 | if ((command & IXGBE_MSCA_MDI_COMMAND) == 0) | |
197 | break; | |
198 | } | |
199 | ||
200 | if ((command & IXGBE_MSCA_MDI_COMMAND) != 0) { | |
201 | hw_dbg(hw, "PHY address command did not complete.\n"); | |
202 | status = IXGBE_ERR_PHY; | |
203 | } | |
204 | ||
205 | if (status == 0) { | |
206 | /* | |
207 | * Address cycle complete, setup and write the read | |
208 | * command | |
209 | */ | |
210 | command = ((reg_addr << IXGBE_MSCA_NP_ADDR_SHIFT) | | |
c44ade9e | 211 | (device_type << IXGBE_MSCA_DEV_TYPE_SHIFT) | |
6b73e10d BH |
212 | (hw->phy.mdio.prtad << |
213 | IXGBE_MSCA_PHY_ADDR_SHIFT) | | |
c44ade9e | 214 | (IXGBE_MSCA_READ | IXGBE_MSCA_MDI_COMMAND)); |
9a799d71 AK |
215 | |
216 | IXGBE_WRITE_REG(hw, IXGBE_MSCA, command); | |
217 | ||
218 | /* | |
219 | * Check every 10 usec to see if the address cycle | |
220 | * completed. The MDI Command bit will clear when the | |
221 | * operation is complete | |
222 | */ | |
c44ade9e | 223 | for (i = 0; i < IXGBE_MDIO_COMMAND_TIMEOUT; i++) { |
9a799d71 AK |
224 | udelay(10); |
225 | ||
226 | command = IXGBE_READ_REG(hw, IXGBE_MSCA); | |
227 | ||
228 | if ((command & IXGBE_MSCA_MDI_COMMAND) == 0) | |
229 | break; | |
230 | } | |
231 | ||
232 | if ((command & IXGBE_MSCA_MDI_COMMAND) != 0) { | |
c44ade9e | 233 | hw_dbg(hw, "PHY read command didn't complete\n"); |
9a799d71 AK |
234 | status = IXGBE_ERR_PHY; |
235 | } else { | |
236 | /* | |
237 | * Read operation is complete. Get the data | |
238 | * from MSRWD | |
239 | */ | |
240 | data = IXGBE_READ_REG(hw, IXGBE_MSRWD); | |
241 | data >>= IXGBE_MSRWD_READ_DATA_SHIFT; | |
242 | *phy_data = (u16)(data); | |
243 | } | |
244 | } | |
245 | ||
246 | ixgbe_release_swfw_sync(hw, gssr); | |
247 | } | |
c44ade9e | 248 | |
9a799d71 AK |
249 | return status; |
250 | } | |
251 | ||
252 | /** | |
c44ade9e | 253 | * ixgbe_write_phy_reg_generic - Writes a value to specified PHY register |
9a799d71 AK |
254 | * @hw: pointer to hardware structure |
255 | * @reg_addr: 32 bit PHY register to write | |
256 | * @device_type: 5 bit device type | |
257 | * @phy_data: Data to write to the PHY register | |
258 | **/ | |
c44ade9e JB |
259 | s32 ixgbe_write_phy_reg_generic(struct ixgbe_hw *hw, u32 reg_addr, |
260 | u32 device_type, u16 phy_data) | |
9a799d71 AK |
261 | { |
262 | u32 command; | |
263 | u32 i; | |
9a799d71 AK |
264 | s32 status = 0; |
265 | u16 gssr; | |
266 | ||
267 | if (IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1) | |
268 | gssr = IXGBE_GSSR_PHY1_SM; | |
269 | else | |
270 | gssr = IXGBE_GSSR_PHY0_SM; | |
271 | ||
272 | if (ixgbe_acquire_swfw_sync(hw, gssr) != 0) | |
273 | status = IXGBE_ERR_SWFW_SYNC; | |
274 | ||
275 | if (status == 0) { | |
276 | /* Put the data in the MDI single read and write data register*/ | |
277 | IXGBE_WRITE_REG(hw, IXGBE_MSRWD, (u32)phy_data); | |
278 | ||
279 | /* Setup and write the address cycle command */ | |
280 | command = ((reg_addr << IXGBE_MSCA_NP_ADDR_SHIFT) | | |
c44ade9e | 281 | (device_type << IXGBE_MSCA_DEV_TYPE_SHIFT) | |
6b73e10d | 282 | (hw->phy.mdio.prtad << IXGBE_MSCA_PHY_ADDR_SHIFT) | |
c44ade9e | 283 | (IXGBE_MSCA_ADDR_CYCLE | IXGBE_MSCA_MDI_COMMAND)); |
9a799d71 AK |
284 | |
285 | IXGBE_WRITE_REG(hw, IXGBE_MSCA, command); | |
286 | ||
287 | /* | |
288 | * Check every 10 usec to see if the address cycle completed. | |
289 | * The MDI Command bit will clear when the operation is | |
290 | * complete | |
291 | */ | |
c44ade9e | 292 | for (i = 0; i < IXGBE_MDIO_COMMAND_TIMEOUT; i++) { |
9a799d71 AK |
293 | udelay(10); |
294 | ||
295 | command = IXGBE_READ_REG(hw, IXGBE_MSCA); | |
296 | ||
c44ade9e | 297 | if ((command & IXGBE_MSCA_MDI_COMMAND) == 0) |
9a799d71 | 298 | break; |
9a799d71 AK |
299 | } |
300 | ||
c44ade9e JB |
301 | if ((command & IXGBE_MSCA_MDI_COMMAND) != 0) { |
302 | hw_dbg(hw, "PHY address cmd didn't complete\n"); | |
9a799d71 | 303 | status = IXGBE_ERR_PHY; |
c44ade9e | 304 | } |
9a799d71 AK |
305 | |
306 | if (status == 0) { | |
307 | /* | |
308 | * Address cycle complete, setup and write the write | |
309 | * command | |
310 | */ | |
311 | command = ((reg_addr << IXGBE_MSCA_NP_ADDR_SHIFT) | | |
c44ade9e | 312 | (device_type << IXGBE_MSCA_DEV_TYPE_SHIFT) | |
6b73e10d BH |
313 | (hw->phy.mdio.prtad << |
314 | IXGBE_MSCA_PHY_ADDR_SHIFT) | | |
c44ade9e | 315 | (IXGBE_MSCA_WRITE | IXGBE_MSCA_MDI_COMMAND)); |
9a799d71 AK |
316 | |
317 | IXGBE_WRITE_REG(hw, IXGBE_MSCA, command); | |
318 | ||
319 | /* | |
320 | * Check every 10 usec to see if the address cycle | |
321 | * completed. The MDI Command bit will clear when the | |
322 | * operation is complete | |
323 | */ | |
c44ade9e | 324 | for (i = 0; i < IXGBE_MDIO_COMMAND_TIMEOUT; i++) { |
9a799d71 AK |
325 | udelay(10); |
326 | ||
327 | command = IXGBE_READ_REG(hw, IXGBE_MSCA); | |
328 | ||
c44ade9e | 329 | if ((command & IXGBE_MSCA_MDI_COMMAND) == 0) |
9a799d71 | 330 | break; |
9a799d71 AK |
331 | } |
332 | ||
c44ade9e JB |
333 | if ((command & IXGBE_MSCA_MDI_COMMAND) != 0) { |
334 | hw_dbg(hw, "PHY address cmd didn't complete\n"); | |
9a799d71 | 335 | status = IXGBE_ERR_PHY; |
c44ade9e | 336 | } |
9a799d71 AK |
337 | } |
338 | ||
339 | ixgbe_release_swfw_sync(hw, gssr); | |
340 | } | |
341 | ||
342 | return status; | |
343 | } | |
344 | ||
345 | /** | |
c44ade9e | 346 | * ixgbe_setup_phy_link_generic - Set and restart autoneg |
9a799d71 AK |
347 | * @hw: pointer to hardware structure |
348 | * | |
349 | * Restart autonegotiation and PHY and waits for completion. | |
350 | **/ | |
c44ade9e | 351 | s32 ixgbe_setup_phy_link_generic(struct ixgbe_hw *hw) |
9a799d71 AK |
352 | { |
353 | s32 status = IXGBE_NOT_IMPLEMENTED; | |
354 | u32 time_out; | |
355 | u32 max_time_out = 10; | |
6b73e10d | 356 | u16 autoneg_reg; |
9a799d71 AK |
357 | |
358 | /* | |
359 | * Set advertisement settings in PHY based on autoneg_advertised | |
360 | * settings. If autoneg_advertised = 0, then advertise default values | |
c44ade9e | 361 | * tnx devices cannot be "forced" to a autoneg 10G and fail. But can |
9a799d71 AK |
362 | * for a 1G. |
363 | */ | |
6b73e10d | 364 | hw->phy.ops.read_reg(hw, MDIO_AN_ADVERTISE, MDIO_MMD_AN, &autoneg_reg); |
9a799d71 AK |
365 | |
366 | if (hw->phy.autoneg_advertised == IXGBE_LINK_SPEED_1GB_FULL) | |
6b73e10d | 367 | autoneg_reg &= ~MDIO_AN_10GBT_CTRL_ADV10G; |
9a799d71 | 368 | else |
6b73e10d | 369 | autoneg_reg |= MDIO_AN_10GBT_CTRL_ADV10G; |
9a799d71 | 370 | |
6b73e10d | 371 | hw->phy.ops.write_reg(hw, MDIO_AN_ADVERTISE, MDIO_MMD_AN, autoneg_reg); |
9a799d71 AK |
372 | |
373 | /* Restart PHY autonegotiation and wait for completion */ | |
6b73e10d | 374 | hw->phy.ops.read_reg(hw, MDIO_CTRL1, MDIO_MMD_AN, &autoneg_reg); |
9a799d71 | 375 | |
6b73e10d | 376 | autoneg_reg |= MDIO_AN_CTRL1_RESTART; |
9a799d71 | 377 | |
6b73e10d | 378 | hw->phy.ops.write_reg(hw, MDIO_CTRL1, MDIO_MMD_AN, autoneg_reg); |
9a799d71 AK |
379 | |
380 | /* Wait for autonegotiation to finish */ | |
381 | for (time_out = 0; time_out < max_time_out; time_out++) { | |
382 | udelay(10); | |
383 | /* Restart PHY autonegotiation and wait for completion */ | |
6b73e10d | 384 | status = hw->phy.ops.read_reg(hw, MDIO_STAT1, MDIO_MMD_AN, |
c44ade9e | 385 | &autoneg_reg); |
9a799d71 | 386 | |
6b73e10d BH |
387 | autoneg_reg &= MDIO_AN_STAT1_COMPLETE; |
388 | if (autoneg_reg == MDIO_AN_STAT1_COMPLETE) { | |
9a799d71 AK |
389 | status = 0; |
390 | break; | |
391 | } | |
392 | } | |
393 | ||
394 | if (time_out == max_time_out) | |
395 | status = IXGBE_ERR_LINK_SETUP; | |
396 | ||
397 | return status; | |
398 | } | |
399 | ||
400 | /** | |
c44ade9e | 401 | * ixgbe_setup_phy_link_speed_generic - Sets the auto advertised capabilities |
9a799d71 AK |
402 | * @hw: pointer to hardware structure |
403 | * @speed: new link speed | |
404 | * @autoneg: true if autonegotiation enabled | |
405 | **/ | |
c44ade9e JB |
406 | s32 ixgbe_setup_phy_link_speed_generic(struct ixgbe_hw *hw, |
407 | ixgbe_link_speed speed, | |
408 | bool autoneg, | |
409 | bool autoneg_wait_to_complete) | |
9a799d71 | 410 | { |
c44ade9e | 411 | |
9a799d71 AK |
412 | /* |
413 | * Clear autoneg_advertised and set new values based on input link | |
414 | * speed. | |
415 | */ | |
416 | hw->phy.autoneg_advertised = 0; | |
417 | ||
418 | if (speed & IXGBE_LINK_SPEED_10GB_FULL) | |
419 | hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_10GB_FULL; | |
c44ade9e | 420 | |
9a799d71 AK |
421 | if (speed & IXGBE_LINK_SPEED_1GB_FULL) |
422 | hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_1GB_FULL; | |
423 | ||
424 | /* Setup link based on the new speed settings */ | |
c44ade9e | 425 | hw->phy.ops.setup_link(hw); |
9a799d71 AK |
426 | |
427 | return 0; | |
428 | } | |
c44ade9e | 429 | |
a391f1d5 DS |
430 | /** |
431 | * ixgbe_get_copper_link_capabilities_generic - Determines link capabilities | |
432 | * @hw: pointer to hardware structure | |
433 | * @speed: pointer to link speed | |
434 | * @autoneg: boolean auto-negotiation value | |
435 | * | |
436 | * Determines the link capabilities by reading the AUTOC register. | |
437 | */ | |
438 | s32 ixgbe_get_copper_link_capabilities_generic(struct ixgbe_hw *hw, | |
fe15e8e1 DS |
439 | ixgbe_link_speed *speed, |
440 | bool *autoneg) | |
a391f1d5 DS |
441 | { |
442 | s32 status = IXGBE_ERR_LINK_SETUP; | |
443 | u16 speed_ability; | |
444 | ||
445 | *speed = 0; | |
446 | *autoneg = true; | |
447 | ||
448 | status = hw->phy.ops.read_reg(hw, MDIO_SPEED, MDIO_MMD_PMAPMD, | |
449 | &speed_ability); | |
450 | ||
451 | if (status == 0) { | |
452 | if (speed_ability & MDIO_SPEED_10G) | |
453 | *speed |= IXGBE_LINK_SPEED_10GB_FULL; | |
454 | if (speed_ability & MDIO_PMA_SPEED_1000) | |
455 | *speed |= IXGBE_LINK_SPEED_1GB_FULL; | |
456 | if (speed_ability & MDIO_PMA_SPEED_100) | |
457 | *speed |= IXGBE_LINK_SPEED_100_FULL; | |
458 | } | |
459 | ||
460 | return status; | |
461 | } | |
462 | ||
c4900be0 DS |
463 | /** |
464 | * ixgbe_reset_phy_nl - Performs a PHY reset | |
465 | * @hw: pointer to hardware structure | |
466 | **/ | |
467 | s32 ixgbe_reset_phy_nl(struct ixgbe_hw *hw) | |
468 | { | |
469 | u16 phy_offset, control, eword, edata, block_crc; | |
470 | bool end_data = false; | |
471 | u16 list_offset, data_offset; | |
472 | u16 phy_data = 0; | |
473 | s32 ret_val = 0; | |
474 | u32 i; | |
475 | ||
6b73e10d | 476 | hw->phy.ops.read_reg(hw, MDIO_CTRL1, MDIO_MMD_PHYXS, &phy_data); |
c4900be0 DS |
477 | |
478 | /* reset the PHY and poll for completion */ | |
6b73e10d BH |
479 | hw->phy.ops.write_reg(hw, MDIO_CTRL1, MDIO_MMD_PHYXS, |
480 | (phy_data | MDIO_CTRL1_RESET)); | |
c4900be0 DS |
481 | |
482 | for (i = 0; i < 100; i++) { | |
6b73e10d BH |
483 | hw->phy.ops.read_reg(hw, MDIO_CTRL1, MDIO_MMD_PHYXS, |
484 | &phy_data); | |
485 | if ((phy_data & MDIO_CTRL1_RESET) == 0) | |
c4900be0 DS |
486 | break; |
487 | msleep(10); | |
488 | } | |
489 | ||
6b73e10d | 490 | if ((phy_data & MDIO_CTRL1_RESET) != 0) { |
c4900be0 DS |
491 | hw_dbg(hw, "PHY reset did not complete.\n"); |
492 | ret_val = IXGBE_ERR_PHY; | |
493 | goto out; | |
494 | } | |
495 | ||
496 | /* Get init offsets */ | |
497 | ret_val = ixgbe_get_sfp_init_sequence_offsets(hw, &list_offset, | |
498 | &data_offset); | |
499 | if (ret_val != 0) | |
500 | goto out; | |
501 | ||
502 | ret_val = hw->eeprom.ops.read(hw, data_offset, &block_crc); | |
503 | data_offset++; | |
504 | while (!end_data) { | |
505 | /* | |
506 | * Read control word from PHY init contents offset | |
507 | */ | |
508 | ret_val = hw->eeprom.ops.read(hw, data_offset, &eword); | |
509 | control = (eword & IXGBE_CONTROL_MASK_NL) >> | |
510 | IXGBE_CONTROL_SHIFT_NL; | |
511 | edata = eword & IXGBE_DATA_MASK_NL; | |
512 | switch (control) { | |
513 | case IXGBE_DELAY_NL: | |
514 | data_offset++; | |
515 | hw_dbg(hw, "DELAY: %d MS\n", edata); | |
516 | msleep(edata); | |
517 | break; | |
518 | case IXGBE_DATA_NL: | |
d6dbee86 | 519 | hw_dbg(hw, "DATA:\n"); |
c4900be0 DS |
520 | data_offset++; |
521 | hw->eeprom.ops.read(hw, data_offset++, | |
522 | &phy_offset); | |
523 | for (i = 0; i < edata; i++) { | |
524 | hw->eeprom.ops.read(hw, data_offset, &eword); | |
525 | hw->phy.ops.write_reg(hw, phy_offset, | |
6b73e10d | 526 | MDIO_MMD_PMAPMD, eword); |
c4900be0 DS |
527 | hw_dbg(hw, "Wrote %4.4x to %4.4x\n", eword, |
528 | phy_offset); | |
529 | data_offset++; | |
530 | phy_offset++; | |
531 | } | |
532 | break; | |
533 | case IXGBE_CONTROL_NL: | |
534 | data_offset++; | |
d6dbee86 | 535 | hw_dbg(hw, "CONTROL:\n"); |
c4900be0 DS |
536 | if (edata == IXGBE_CONTROL_EOL_NL) { |
537 | hw_dbg(hw, "EOL\n"); | |
538 | end_data = true; | |
539 | } else if (edata == IXGBE_CONTROL_SOL_NL) { | |
540 | hw_dbg(hw, "SOL\n"); | |
541 | } else { | |
542 | hw_dbg(hw, "Bad control value\n"); | |
543 | ret_val = IXGBE_ERR_PHY; | |
544 | goto out; | |
545 | } | |
546 | break; | |
547 | default: | |
548 | hw_dbg(hw, "Bad control type\n"); | |
549 | ret_val = IXGBE_ERR_PHY; | |
550 | goto out; | |
551 | } | |
552 | } | |
553 | ||
554 | out: | |
555 | return ret_val; | |
556 | } | |
557 | ||
558 | /** | |
559 | * ixgbe_identify_sfp_module_generic - Identifies SFP module and assigns | |
560 | * the PHY type. | |
561 | * @hw: pointer to hardware structure | |
562 | * | |
563 | * Searches for and indentifies the SFP module. Assings appropriate PHY type. | |
564 | **/ | |
565 | s32 ixgbe_identify_sfp_module_generic(struct ixgbe_hw *hw) | |
566 | { | |
567 | s32 status = IXGBE_ERR_PHY_ADDR_INVALID; | |
568 | u32 vendor_oui = 0; | |
553b4497 | 569 | enum ixgbe_sfp_type stored_sfp_type = hw->phy.sfp_type; |
c4900be0 DS |
570 | u8 identifier = 0; |
571 | u8 comp_codes_1g = 0; | |
572 | u8 comp_codes_10g = 0; | |
11afc1b1 | 573 | u8 oui_bytes[3] = {0, 0, 0}; |
537d58a0 | 574 | u8 cable_tech = 0; |
ea0a04df | 575 | u8 cable_spec = 0; |
11afc1b1 | 576 | u16 enforce_sfp = 0; |
c4900be0 | 577 | |
8ca783ab DS |
578 | if (hw->mac.ops.get_media_type(hw) != ixgbe_media_type_fiber) { |
579 | hw->phy.sfp_type = ixgbe_sfp_type_not_present; | |
580 | status = IXGBE_ERR_SFP_NOT_PRESENT; | |
581 | goto out; | |
582 | } | |
583 | ||
c4900be0 DS |
584 | status = hw->phy.ops.read_i2c_eeprom(hw, IXGBE_SFF_IDENTIFIER, |
585 | &identifier); | |
586 | ||
8ca783ab DS |
587 | if (status == IXGBE_ERR_SFP_NOT_PRESENT || status == IXGBE_ERR_I2C) { |
588 | status = IXGBE_ERR_SFP_NOT_PRESENT; | |
c4900be0 | 589 | hw->phy.sfp_type = ixgbe_sfp_type_not_present; |
8ca783ab DS |
590 | if (hw->phy.type != ixgbe_phy_nl) { |
591 | hw->phy.id = 0; | |
592 | hw->phy.type = ixgbe_phy_unknown; | |
593 | } | |
c4900be0 DS |
594 | goto out; |
595 | } | |
596 | ||
597 | if (identifier == IXGBE_SFF_IDENTIFIER_SFP) { | |
598 | hw->phy.ops.read_i2c_eeprom(hw, IXGBE_SFF_1GBE_COMP_CODES, | |
599 | &comp_codes_1g); | |
600 | hw->phy.ops.read_i2c_eeprom(hw, IXGBE_SFF_10GBE_COMP_CODES, | |
601 | &comp_codes_10g); | |
537d58a0 PWJ |
602 | hw->phy.ops.read_i2c_eeprom(hw, IXGBE_SFF_CABLE_TECHNOLOGY, |
603 | &cable_tech); | |
c4900be0 DS |
604 | |
605 | /* ID Module | |
606 | * ========= | |
11afc1b1 PW |
607 | * 0 SFP_DA_CU |
608 | * 1 SFP_SR | |
609 | * 2 SFP_LR | |
610 | * 3 SFP_DA_CORE0 - 82599-specific | |
611 | * 4 SFP_DA_CORE1 - 82599-specific | |
612 | * 5 SFP_SR/LR_CORE0 - 82599-specific | |
613 | * 6 SFP_SR/LR_CORE1 - 82599-specific | |
75672506 DS |
614 | * 7 SFP_act_lmt_DA_CORE0 - 82599-specific |
615 | * 8 SFP_act_lmt_DA_CORE1 - 82599-specific | |
cb836a97 DS |
616 | * 9 SFP_1g_cu_CORE0 - 82599-specific |
617 | * 10 SFP_1g_cu_CORE1 - 82599-specific | |
c4900be0 | 618 | */ |
11afc1b1 | 619 | if (hw->mac.type == ixgbe_mac_82598EB) { |
537d58a0 | 620 | if (cable_tech & IXGBE_SFF_DA_PASSIVE_CABLE) |
11afc1b1 PW |
621 | hw->phy.sfp_type = ixgbe_sfp_type_da_cu; |
622 | else if (comp_codes_10g & IXGBE_SFF_10GBASESR_CAPABLE) | |
623 | hw->phy.sfp_type = ixgbe_sfp_type_sr; | |
624 | else if (comp_codes_10g & IXGBE_SFF_10GBASELR_CAPABLE) | |
625 | hw->phy.sfp_type = ixgbe_sfp_type_lr; | |
626 | else | |
627 | hw->phy.sfp_type = ixgbe_sfp_type_unknown; | |
628 | } else if (hw->mac.type == ixgbe_mac_82599EB) { | |
ea0a04df | 629 | if (cable_tech & IXGBE_SFF_DA_PASSIVE_CABLE) { |
11afc1b1 PW |
630 | if (hw->bus.lan_id == 0) |
631 | hw->phy.sfp_type = | |
632 | ixgbe_sfp_type_da_cu_core0; | |
633 | else | |
634 | hw->phy.sfp_type = | |
635 | ixgbe_sfp_type_da_cu_core1; | |
ea0a04df DS |
636 | } else if (cable_tech & IXGBE_SFF_DA_ACTIVE_CABLE) { |
637 | hw->phy.ops.read_i2c_eeprom( | |
638 | hw, IXGBE_SFF_CABLE_SPEC_COMP, | |
639 | &cable_spec); | |
640 | if (cable_spec & | |
641 | IXGBE_SFF_DA_SPEC_ACTIVE_LIMITING) { | |
642 | if (hw->bus.lan_id == 0) | |
643 | hw->phy.sfp_type = | |
644 | ixgbe_sfp_type_da_act_lmt_core0; | |
645 | else | |
646 | hw->phy.sfp_type = | |
647 | ixgbe_sfp_type_da_act_lmt_core1; | |
648 | } else { | |
649 | hw->phy.sfp_type = | |
650 | ixgbe_sfp_type_unknown; | |
651 | } | |
652 | } else if (comp_codes_10g & IXGBE_SFF_10GBASESR_CAPABLE) | |
11afc1b1 PW |
653 | if (hw->bus.lan_id == 0) |
654 | hw->phy.sfp_type = | |
655 | ixgbe_sfp_type_srlr_core0; | |
656 | else | |
657 | hw->phy.sfp_type = | |
658 | ixgbe_sfp_type_srlr_core1; | |
659 | else if (comp_codes_10g & IXGBE_SFF_10GBASELR_CAPABLE) | |
660 | if (hw->bus.lan_id == 0) | |
661 | hw->phy.sfp_type = | |
662 | ixgbe_sfp_type_srlr_core0; | |
663 | else | |
664 | hw->phy.sfp_type = | |
665 | ixgbe_sfp_type_srlr_core1; | |
cb836a97 DS |
666 | else if (comp_codes_1g & IXGBE_SFF_1GBASET_CAPABLE) |
667 | if (hw->bus.lan_id == 0) | |
668 | hw->phy.sfp_type = | |
669 | ixgbe_sfp_type_1g_cu_core0; | |
670 | else | |
671 | hw->phy.sfp_type = | |
672 | ixgbe_sfp_type_1g_cu_core1; | |
11afc1b1 PW |
673 | else |
674 | hw->phy.sfp_type = ixgbe_sfp_type_unknown; | |
675 | } | |
c4900be0 | 676 | |
553b4497 PW |
677 | if (hw->phy.sfp_type != stored_sfp_type) |
678 | hw->phy.sfp_setup_needed = true; | |
679 | ||
680 | /* Determine if the SFP+ PHY is dual speed or not. */ | |
50ac58ba | 681 | hw->phy.multispeed_fiber = false; |
553b4497 PW |
682 | if (((comp_codes_1g & IXGBE_SFF_1GBASESX_CAPABLE) && |
683 | (comp_codes_10g & IXGBE_SFF_10GBASESR_CAPABLE)) || | |
684 | ((comp_codes_1g & IXGBE_SFF_1GBASELX_CAPABLE) && | |
685 | (comp_codes_10g & IXGBE_SFF_10GBASELR_CAPABLE))) | |
686 | hw->phy.multispeed_fiber = true; | |
687 | ||
c4900be0 | 688 | /* Determine PHY vendor */ |
04193058 | 689 | if (hw->phy.type != ixgbe_phy_nl) { |
c4900be0 DS |
690 | hw->phy.id = identifier; |
691 | hw->phy.ops.read_i2c_eeprom(hw, | |
692 | IXGBE_SFF_VENDOR_OUI_BYTE0, | |
693 | &oui_bytes[0]); | |
694 | hw->phy.ops.read_i2c_eeprom(hw, | |
695 | IXGBE_SFF_VENDOR_OUI_BYTE1, | |
696 | &oui_bytes[1]); | |
697 | hw->phy.ops.read_i2c_eeprom(hw, | |
698 | IXGBE_SFF_VENDOR_OUI_BYTE2, | |
699 | &oui_bytes[2]); | |
700 | ||
701 | vendor_oui = | |
702 | ((oui_bytes[0] << IXGBE_SFF_VENDOR_OUI_BYTE0_SHIFT) | | |
703 | (oui_bytes[1] << IXGBE_SFF_VENDOR_OUI_BYTE1_SHIFT) | | |
704 | (oui_bytes[2] << IXGBE_SFF_VENDOR_OUI_BYTE2_SHIFT)); | |
705 | ||
706 | switch (vendor_oui) { | |
707 | case IXGBE_SFF_VENDOR_OUI_TYCO: | |
537d58a0 | 708 | if (cable_tech & IXGBE_SFF_DA_PASSIVE_CABLE) |
ea0a04df DS |
709 | hw->phy.type = |
710 | ixgbe_phy_sfp_passive_tyco; | |
c4900be0 DS |
711 | break; |
712 | case IXGBE_SFF_VENDOR_OUI_FTL: | |
ea0a04df DS |
713 | if (cable_tech & IXGBE_SFF_DA_ACTIVE_CABLE) |
714 | hw->phy.type = ixgbe_phy_sfp_ftl_active; | |
715 | else | |
716 | hw->phy.type = ixgbe_phy_sfp_ftl; | |
c4900be0 DS |
717 | break; |
718 | case IXGBE_SFF_VENDOR_OUI_AVAGO: | |
719 | hw->phy.type = ixgbe_phy_sfp_avago; | |
720 | break; | |
11afc1b1 PW |
721 | case IXGBE_SFF_VENDOR_OUI_INTEL: |
722 | hw->phy.type = ixgbe_phy_sfp_intel; | |
723 | break; | |
c4900be0 | 724 | default: |
537d58a0 | 725 | if (cable_tech & IXGBE_SFF_DA_PASSIVE_CABLE) |
ea0a04df DS |
726 | hw->phy.type = |
727 | ixgbe_phy_sfp_passive_unknown; | |
728 | else if (cable_tech & IXGBE_SFF_DA_ACTIVE_CABLE) | |
729 | hw->phy.type = | |
730 | ixgbe_phy_sfp_active_unknown; | |
c4900be0 DS |
731 | else |
732 | hw->phy.type = ixgbe_phy_sfp_unknown; | |
733 | break; | |
734 | } | |
735 | } | |
fa466e91 | 736 | |
537d58a0 | 737 | /* All passive DA cables are supported */ |
ea0a04df DS |
738 | if (cable_tech & (IXGBE_SFF_DA_PASSIVE_CABLE | |
739 | IXGBE_SFF_DA_ACTIVE_CABLE)) { | |
fa466e91 WJP |
740 | status = 0; |
741 | goto out; | |
742 | } | |
743 | ||
cb836a97 DS |
744 | /* Verify supported 1G SFP modules */ |
745 | if (comp_codes_10g == 0 && | |
746 | !(hw->phy.sfp_type == ixgbe_sfp_type_1g_cu_core1 || | |
747 | hw->phy.sfp_type == ixgbe_sfp_type_1g_cu_core0)) { | |
fa466e91 WJP |
748 | hw->phy.type = ixgbe_phy_sfp_unsupported; |
749 | status = IXGBE_ERR_SFP_NOT_SUPPORTED; | |
750 | goto out; | |
751 | } | |
752 | ||
753 | /* Anything else 82598-based is supported */ | |
754 | if (hw->mac.type == ixgbe_mac_82598EB) { | |
11afc1b1 PW |
755 | status = 0; |
756 | goto out; | |
757 | } | |
758 | ||
04193058 PWJ |
759 | /* This is guaranteed to be 82599, no need to check for NULL */ |
760 | hw->mac.ops.get_device_caps(hw, &enforce_sfp); | |
cb836a97 DS |
761 | if (!(enforce_sfp & IXGBE_DEVICE_CAPS_ALLOW_ANY_SFP) && |
762 | !((hw->phy.sfp_type == ixgbe_sfp_type_1g_cu_core0) || | |
763 | (hw->phy.sfp_type == ixgbe_sfp_type_1g_cu_core1))) { | |
11afc1b1 PW |
764 | /* Make sure we're a supported PHY type */ |
765 | if (hw->phy.type == ixgbe_phy_sfp_intel) { | |
766 | status = 0; | |
767 | } else { | |
768 | hw_dbg(hw, "SFP+ module not supported\n"); | |
fa466e91 | 769 | hw->phy.type = ixgbe_phy_sfp_unsupported; |
11afc1b1 PW |
770 | status = IXGBE_ERR_SFP_NOT_SUPPORTED; |
771 | } | |
772 | } else { | |
773 | status = 0; | |
774 | } | |
c4900be0 DS |
775 | } |
776 | ||
777 | out: | |
778 | return status; | |
779 | } | |
780 | ||
781 | /** | |
782 | * ixgbe_get_sfp_init_sequence_offsets - Checks the MAC's EEPROM to see | |
783 | * if it supports a given SFP+ module type, if so it returns the offsets to the | |
784 | * phy init sequence block. | |
785 | * @hw: pointer to hardware structure | |
786 | * @list_offset: offset to the SFP ID list | |
787 | * @data_offset: offset to the SFP data block | |
788 | **/ | |
789 | s32 ixgbe_get_sfp_init_sequence_offsets(struct ixgbe_hw *hw, | |
790 | u16 *list_offset, | |
791 | u16 *data_offset) | |
792 | { | |
793 | u16 sfp_id; | |
cb836a97 | 794 | u16 sfp_type = hw->phy.sfp_type; |
c4900be0 DS |
795 | |
796 | if (hw->phy.sfp_type == ixgbe_sfp_type_unknown) | |
797 | return IXGBE_ERR_SFP_NOT_SUPPORTED; | |
798 | ||
799 | if (hw->phy.sfp_type == ixgbe_sfp_type_not_present) | |
800 | return IXGBE_ERR_SFP_NOT_PRESENT; | |
801 | ||
802 | if ((hw->device_id == IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM) && | |
803 | (hw->phy.sfp_type == ixgbe_sfp_type_da_cu)) | |
804 | return IXGBE_ERR_SFP_NOT_SUPPORTED; | |
805 | ||
cb836a97 DS |
806 | /* |
807 | * Limiting active cables and 1G Phys must be initialized as | |
808 | * SR modules | |
809 | */ | |
810 | if (sfp_type == ixgbe_sfp_type_da_act_lmt_core0 || | |
811 | sfp_type == ixgbe_sfp_type_1g_cu_core0) | |
812 | sfp_type = ixgbe_sfp_type_srlr_core0; | |
813 | else if (sfp_type == ixgbe_sfp_type_da_act_lmt_core1 || | |
814 | sfp_type == ixgbe_sfp_type_1g_cu_core1) | |
815 | sfp_type = ixgbe_sfp_type_srlr_core1; | |
816 | ||
c4900be0 DS |
817 | /* Read offset to PHY init contents */ |
818 | hw->eeprom.ops.read(hw, IXGBE_PHY_INIT_OFFSET_NL, list_offset); | |
819 | ||
820 | if ((!*list_offset) || (*list_offset == 0xFFFF)) | |
11afc1b1 | 821 | return IXGBE_ERR_SFP_NO_INIT_SEQ_PRESENT; |
c4900be0 DS |
822 | |
823 | /* Shift offset to first ID word */ | |
824 | (*list_offset)++; | |
825 | ||
826 | /* | |
827 | * Find the matching SFP ID in the EEPROM | |
828 | * and program the init sequence | |
829 | */ | |
830 | hw->eeprom.ops.read(hw, *list_offset, &sfp_id); | |
831 | ||
832 | while (sfp_id != IXGBE_PHY_INIT_END_NL) { | |
cb836a97 | 833 | if (sfp_id == sfp_type) { |
c4900be0 DS |
834 | (*list_offset)++; |
835 | hw->eeprom.ops.read(hw, *list_offset, data_offset); | |
836 | if ((!*data_offset) || (*data_offset == 0xFFFF)) { | |
837 | hw_dbg(hw, "SFP+ module not supported\n"); | |
838 | return IXGBE_ERR_SFP_NOT_SUPPORTED; | |
839 | } else { | |
840 | break; | |
841 | } | |
842 | } else { | |
843 | (*list_offset) += 2; | |
844 | if (hw->eeprom.ops.read(hw, *list_offset, &sfp_id)) | |
845 | return IXGBE_ERR_PHY; | |
846 | } | |
847 | } | |
848 | ||
849 | if (sfp_id == IXGBE_PHY_INIT_END_NL) { | |
850 | hw_dbg(hw, "No matching SFP+ module found\n"); | |
851 | return IXGBE_ERR_SFP_NOT_SUPPORTED; | |
852 | } | |
853 | ||
854 | return 0; | |
855 | } | |
856 | ||
11afc1b1 PW |
857 | /** |
858 | * ixgbe_read_i2c_eeprom_generic - Reads 8 bit EEPROM word over I2C interface | |
859 | * @hw: pointer to hardware structure | |
860 | * @byte_offset: EEPROM byte offset to read | |
861 | * @eeprom_data: value read | |
862 | * | |
863 | * Performs byte read operation to SFP module's EEPROM over I2C interface. | |
864 | **/ | |
865 | s32 ixgbe_read_i2c_eeprom_generic(struct ixgbe_hw *hw, u8 byte_offset, | |
866 | u8 *eeprom_data) | |
867 | { | |
868 | return hw->phy.ops.read_i2c_byte(hw, byte_offset, | |
869 | IXGBE_I2C_EEPROM_DEV_ADDR, | |
870 | eeprom_data); | |
871 | } | |
872 | ||
873 | /** | |
874 | * ixgbe_write_i2c_eeprom_generic - Writes 8 bit EEPROM word over I2C interface | |
875 | * @hw: pointer to hardware structure | |
876 | * @byte_offset: EEPROM byte offset to write | |
877 | * @eeprom_data: value to write | |
878 | * | |
879 | * Performs byte write operation to SFP module's EEPROM over I2C interface. | |
880 | **/ | |
881 | s32 ixgbe_write_i2c_eeprom_generic(struct ixgbe_hw *hw, u8 byte_offset, | |
882 | u8 eeprom_data) | |
883 | { | |
884 | return hw->phy.ops.write_i2c_byte(hw, byte_offset, | |
885 | IXGBE_I2C_EEPROM_DEV_ADDR, | |
886 | eeprom_data); | |
887 | } | |
888 | ||
889 | /** | |
890 | * ixgbe_read_i2c_byte_generic - Reads 8 bit word over I2C | |
891 | * @hw: pointer to hardware structure | |
892 | * @byte_offset: byte offset to read | |
893 | * @data: value read | |
894 | * | |
895 | * Performs byte read operation to SFP module's EEPROM over I2C interface at | |
896 | * a specified deivce address. | |
897 | **/ | |
898 | s32 ixgbe_read_i2c_byte_generic(struct ixgbe_hw *hw, u8 byte_offset, | |
899 | u8 dev_addr, u8 *data) | |
900 | { | |
901 | s32 status = 0; | |
902 | u32 max_retry = 1; | |
903 | u32 retry = 0; | |
904 | bool nack = 1; | |
905 | ||
906 | do { | |
907 | ixgbe_i2c_start(hw); | |
908 | ||
909 | /* Device Address and write indication */ | |
910 | status = ixgbe_clock_out_i2c_byte(hw, dev_addr); | |
911 | if (status != 0) | |
912 | goto fail; | |
913 | ||
914 | status = ixgbe_get_i2c_ack(hw); | |
915 | if (status != 0) | |
916 | goto fail; | |
917 | ||
918 | status = ixgbe_clock_out_i2c_byte(hw, byte_offset); | |
919 | if (status != 0) | |
920 | goto fail; | |
921 | ||
922 | status = ixgbe_get_i2c_ack(hw); | |
923 | if (status != 0) | |
924 | goto fail; | |
925 | ||
926 | ixgbe_i2c_start(hw); | |
927 | ||
928 | /* Device Address and read indication */ | |
929 | status = ixgbe_clock_out_i2c_byte(hw, (dev_addr | 0x1)); | |
930 | if (status != 0) | |
931 | goto fail; | |
932 | ||
933 | status = ixgbe_get_i2c_ack(hw); | |
934 | if (status != 0) | |
935 | goto fail; | |
936 | ||
937 | status = ixgbe_clock_in_i2c_byte(hw, data); | |
938 | if (status != 0) | |
939 | goto fail; | |
940 | ||
941 | status = ixgbe_clock_out_i2c_bit(hw, nack); | |
942 | if (status != 0) | |
943 | goto fail; | |
944 | ||
945 | ixgbe_i2c_stop(hw); | |
946 | break; | |
947 | ||
948 | fail: | |
949 | ixgbe_i2c_bus_clear(hw); | |
950 | retry++; | |
951 | if (retry < max_retry) | |
952 | hw_dbg(hw, "I2C byte read error - Retrying.\n"); | |
953 | else | |
954 | hw_dbg(hw, "I2C byte read error.\n"); | |
955 | ||
956 | } while (retry < max_retry); | |
957 | ||
958 | return status; | |
959 | } | |
960 | ||
961 | /** | |
962 | * ixgbe_write_i2c_byte_generic - Writes 8 bit word over I2C | |
963 | * @hw: pointer to hardware structure | |
964 | * @byte_offset: byte offset to write | |
965 | * @data: value to write | |
966 | * | |
967 | * Performs byte write operation to SFP module's EEPROM over I2C interface at | |
968 | * a specified device address. | |
969 | **/ | |
970 | s32 ixgbe_write_i2c_byte_generic(struct ixgbe_hw *hw, u8 byte_offset, | |
971 | u8 dev_addr, u8 data) | |
972 | { | |
973 | s32 status = 0; | |
974 | u32 max_retry = 1; | |
975 | u32 retry = 0; | |
976 | ||
977 | do { | |
978 | ixgbe_i2c_start(hw); | |
979 | ||
980 | status = ixgbe_clock_out_i2c_byte(hw, dev_addr); | |
981 | if (status != 0) | |
982 | goto fail; | |
983 | ||
984 | status = ixgbe_get_i2c_ack(hw); | |
985 | if (status != 0) | |
986 | goto fail; | |
987 | ||
988 | status = ixgbe_clock_out_i2c_byte(hw, byte_offset); | |
989 | if (status != 0) | |
990 | goto fail; | |
991 | ||
992 | status = ixgbe_get_i2c_ack(hw); | |
993 | if (status != 0) | |
994 | goto fail; | |
995 | ||
996 | status = ixgbe_clock_out_i2c_byte(hw, data); | |
997 | if (status != 0) | |
998 | goto fail; | |
999 | ||
1000 | status = ixgbe_get_i2c_ack(hw); | |
1001 | if (status != 0) | |
1002 | goto fail; | |
1003 | ||
1004 | ixgbe_i2c_stop(hw); | |
1005 | break; | |
1006 | ||
1007 | fail: | |
1008 | ixgbe_i2c_bus_clear(hw); | |
1009 | retry++; | |
1010 | if (retry < max_retry) | |
1011 | hw_dbg(hw, "I2C byte write error - Retrying.\n"); | |
1012 | else | |
1013 | hw_dbg(hw, "I2C byte write error.\n"); | |
1014 | } while (retry < max_retry); | |
1015 | ||
1016 | return status; | |
1017 | } | |
1018 | ||
1019 | /** | |
1020 | * ixgbe_i2c_start - Sets I2C start condition | |
1021 | * @hw: pointer to hardware structure | |
1022 | * | |
1023 | * Sets I2C start condition (High -> Low on SDA while SCL is High) | |
1024 | **/ | |
1025 | static void ixgbe_i2c_start(struct ixgbe_hw *hw) | |
1026 | { | |
1027 | u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL); | |
1028 | ||
1029 | /* Start condition must begin with data and clock high */ | |
1030 | ixgbe_set_i2c_data(hw, &i2cctl, 1); | |
1031 | ixgbe_raise_i2c_clk(hw, &i2cctl); | |
1032 | ||
1033 | /* Setup time for start condition (4.7us) */ | |
1034 | udelay(IXGBE_I2C_T_SU_STA); | |
1035 | ||
1036 | ixgbe_set_i2c_data(hw, &i2cctl, 0); | |
1037 | ||
1038 | /* Hold time for start condition (4us) */ | |
1039 | udelay(IXGBE_I2C_T_HD_STA); | |
1040 | ||
1041 | ixgbe_lower_i2c_clk(hw, &i2cctl); | |
1042 | ||
1043 | /* Minimum low period of clock is 4.7 us */ | |
1044 | udelay(IXGBE_I2C_T_LOW); | |
1045 | ||
1046 | } | |
1047 | ||
1048 | /** | |
1049 | * ixgbe_i2c_stop - Sets I2C stop condition | |
1050 | * @hw: pointer to hardware structure | |
1051 | * | |
1052 | * Sets I2C stop condition (Low -> High on SDA while SCL is High) | |
1053 | **/ | |
1054 | static void ixgbe_i2c_stop(struct ixgbe_hw *hw) | |
1055 | { | |
1056 | u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL); | |
1057 | ||
1058 | /* Stop condition must begin with data low and clock high */ | |
1059 | ixgbe_set_i2c_data(hw, &i2cctl, 0); | |
1060 | ixgbe_raise_i2c_clk(hw, &i2cctl); | |
1061 | ||
1062 | /* Setup time for stop condition (4us) */ | |
1063 | udelay(IXGBE_I2C_T_SU_STO); | |
1064 | ||
1065 | ixgbe_set_i2c_data(hw, &i2cctl, 1); | |
1066 | ||
1067 | /* bus free time between stop and start (4.7us)*/ | |
1068 | udelay(IXGBE_I2C_T_BUF); | |
1069 | } | |
1070 | ||
1071 | /** | |
1072 | * ixgbe_clock_in_i2c_byte - Clocks in one byte via I2C | |
1073 | * @hw: pointer to hardware structure | |
1074 | * @data: data byte to clock in | |
1075 | * | |
1076 | * Clocks in one byte data via I2C data/clock | |
1077 | **/ | |
1078 | static s32 ixgbe_clock_in_i2c_byte(struct ixgbe_hw *hw, u8 *data) | |
1079 | { | |
1080 | s32 status = 0; | |
1081 | s32 i; | |
1082 | bool bit = 0; | |
1083 | ||
1084 | for (i = 7; i >= 0; i--) { | |
1085 | status = ixgbe_clock_in_i2c_bit(hw, &bit); | |
1086 | *data |= bit << i; | |
1087 | ||
1088 | if (status != 0) | |
1089 | break; | |
1090 | } | |
1091 | ||
1092 | return status; | |
1093 | } | |
1094 | ||
1095 | /** | |
1096 | * ixgbe_clock_out_i2c_byte - Clocks out one byte via I2C | |
1097 | * @hw: pointer to hardware structure | |
1098 | * @data: data byte clocked out | |
1099 | * | |
1100 | * Clocks out one byte data via I2C data/clock | |
1101 | **/ | |
1102 | static s32 ixgbe_clock_out_i2c_byte(struct ixgbe_hw *hw, u8 data) | |
1103 | { | |
1104 | s32 status = 0; | |
1105 | s32 i; | |
1106 | u32 i2cctl; | |
1107 | bool bit = 0; | |
1108 | ||
1109 | for (i = 7; i >= 0; i--) { | |
1110 | bit = (data >> i) & 0x1; | |
1111 | status = ixgbe_clock_out_i2c_bit(hw, bit); | |
1112 | ||
1113 | if (status != 0) | |
1114 | break; | |
1115 | } | |
1116 | ||
1117 | /* Release SDA line (set high) */ | |
1118 | i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL); | |
1119 | i2cctl |= IXGBE_I2C_DATA_OUT; | |
1120 | IXGBE_WRITE_REG(hw, IXGBE_I2CCTL, i2cctl); | |
1121 | ||
1122 | return status; | |
1123 | } | |
1124 | ||
1125 | /** | |
1126 | * ixgbe_get_i2c_ack - Polls for I2C ACK | |
1127 | * @hw: pointer to hardware structure | |
1128 | * | |
1129 | * Clocks in/out one bit via I2C data/clock | |
1130 | **/ | |
1131 | static s32 ixgbe_get_i2c_ack(struct ixgbe_hw *hw) | |
1132 | { | |
1133 | s32 status; | |
1134 | u32 i = 0; | |
1135 | u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL); | |
1136 | u32 timeout = 10; | |
1137 | bool ack = 1; | |
1138 | ||
1139 | status = ixgbe_raise_i2c_clk(hw, &i2cctl); | |
1140 | ||
1141 | if (status != 0) | |
1142 | goto out; | |
1143 | ||
1144 | /* Minimum high period of clock is 4us */ | |
1145 | udelay(IXGBE_I2C_T_HIGH); | |
1146 | ||
1147 | /* Poll for ACK. Note that ACK in I2C spec is | |
1148 | * transition from 1 to 0 */ | |
1149 | for (i = 0; i < timeout; i++) { | |
1150 | i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL); | |
1151 | ack = ixgbe_get_i2c_data(&i2cctl); | |
1152 | ||
1153 | udelay(1); | |
1154 | if (ack == 0) | |
1155 | break; | |
1156 | } | |
1157 | ||
1158 | if (ack == 1) { | |
1159 | hw_dbg(hw, "I2C ack was not received.\n"); | |
1160 | status = IXGBE_ERR_I2C; | |
1161 | } | |
1162 | ||
1163 | ixgbe_lower_i2c_clk(hw, &i2cctl); | |
1164 | ||
1165 | /* Minimum low period of clock is 4.7 us */ | |
1166 | udelay(IXGBE_I2C_T_LOW); | |
1167 | ||
1168 | out: | |
1169 | return status; | |
1170 | } | |
1171 | ||
1172 | /** | |
1173 | * ixgbe_clock_in_i2c_bit - Clocks in one bit via I2C data/clock | |
1174 | * @hw: pointer to hardware structure | |
1175 | * @data: read data value | |
1176 | * | |
1177 | * Clocks in one bit via I2C data/clock | |
1178 | **/ | |
1179 | static s32 ixgbe_clock_in_i2c_bit(struct ixgbe_hw *hw, bool *data) | |
1180 | { | |
1181 | s32 status; | |
1182 | u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL); | |
1183 | ||
1184 | status = ixgbe_raise_i2c_clk(hw, &i2cctl); | |
1185 | ||
1186 | /* Minimum high period of clock is 4us */ | |
1187 | udelay(IXGBE_I2C_T_HIGH); | |
1188 | ||
1189 | i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL); | |
1190 | *data = ixgbe_get_i2c_data(&i2cctl); | |
1191 | ||
1192 | ixgbe_lower_i2c_clk(hw, &i2cctl); | |
1193 | ||
1194 | /* Minimum low period of clock is 4.7 us */ | |
1195 | udelay(IXGBE_I2C_T_LOW); | |
1196 | ||
1197 | return status; | |
1198 | } | |
1199 | ||
1200 | /** | |
1201 | * ixgbe_clock_out_i2c_bit - Clocks in/out one bit via I2C data/clock | |
1202 | * @hw: pointer to hardware structure | |
1203 | * @data: data value to write | |
1204 | * | |
1205 | * Clocks out one bit via I2C data/clock | |
1206 | **/ | |
1207 | static s32 ixgbe_clock_out_i2c_bit(struct ixgbe_hw *hw, bool data) | |
1208 | { | |
1209 | s32 status; | |
1210 | u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL); | |
1211 | ||
1212 | status = ixgbe_set_i2c_data(hw, &i2cctl, data); | |
1213 | if (status == 0) { | |
1214 | status = ixgbe_raise_i2c_clk(hw, &i2cctl); | |
1215 | ||
1216 | /* Minimum high period of clock is 4us */ | |
1217 | udelay(IXGBE_I2C_T_HIGH); | |
1218 | ||
1219 | ixgbe_lower_i2c_clk(hw, &i2cctl); | |
1220 | ||
1221 | /* Minimum low period of clock is 4.7 us. | |
1222 | * This also takes care of the data hold time. | |
1223 | */ | |
1224 | udelay(IXGBE_I2C_T_LOW); | |
1225 | } else { | |
1226 | status = IXGBE_ERR_I2C; | |
1227 | hw_dbg(hw, "I2C data was not set to %X\n", data); | |
1228 | } | |
1229 | ||
1230 | return status; | |
1231 | } | |
1232 | /** | |
1233 | * ixgbe_raise_i2c_clk - Raises the I2C SCL clock | |
1234 | * @hw: pointer to hardware structure | |
1235 | * @i2cctl: Current value of I2CCTL register | |
1236 | * | |
1237 | * Raises the I2C clock line '0'->'1' | |
1238 | **/ | |
1239 | static s32 ixgbe_raise_i2c_clk(struct ixgbe_hw *hw, u32 *i2cctl) | |
1240 | { | |
1241 | s32 status = 0; | |
1242 | ||
1243 | *i2cctl |= IXGBE_I2C_CLK_OUT; | |
1244 | ||
1245 | IXGBE_WRITE_REG(hw, IXGBE_I2CCTL, *i2cctl); | |
1246 | ||
1247 | /* SCL rise time (1000ns) */ | |
1248 | udelay(IXGBE_I2C_T_RISE); | |
1249 | ||
1250 | return status; | |
1251 | } | |
1252 | ||
1253 | /** | |
1254 | * ixgbe_lower_i2c_clk - Lowers the I2C SCL clock | |
1255 | * @hw: pointer to hardware structure | |
1256 | * @i2cctl: Current value of I2CCTL register | |
1257 | * | |
1258 | * Lowers the I2C clock line '1'->'0' | |
1259 | **/ | |
1260 | static void ixgbe_lower_i2c_clk(struct ixgbe_hw *hw, u32 *i2cctl) | |
1261 | { | |
1262 | ||
1263 | *i2cctl &= ~IXGBE_I2C_CLK_OUT; | |
1264 | ||
1265 | IXGBE_WRITE_REG(hw, IXGBE_I2CCTL, *i2cctl); | |
1266 | ||
1267 | /* SCL fall time (300ns) */ | |
1268 | udelay(IXGBE_I2C_T_FALL); | |
1269 | } | |
1270 | ||
1271 | /** | |
1272 | * ixgbe_set_i2c_data - Sets the I2C data bit | |
1273 | * @hw: pointer to hardware structure | |
1274 | * @i2cctl: Current value of I2CCTL register | |
1275 | * @data: I2C data value (0 or 1) to set | |
1276 | * | |
1277 | * Sets the I2C data bit | |
1278 | **/ | |
1279 | static s32 ixgbe_set_i2c_data(struct ixgbe_hw *hw, u32 *i2cctl, bool data) | |
1280 | { | |
1281 | s32 status = 0; | |
1282 | ||
1283 | if (data) | |
1284 | *i2cctl |= IXGBE_I2C_DATA_OUT; | |
1285 | else | |
1286 | *i2cctl &= ~IXGBE_I2C_DATA_OUT; | |
1287 | ||
1288 | IXGBE_WRITE_REG(hw, IXGBE_I2CCTL, *i2cctl); | |
1289 | ||
1290 | /* Data rise/fall (1000ns/300ns) and set-up time (250ns) */ | |
1291 | udelay(IXGBE_I2C_T_RISE + IXGBE_I2C_T_FALL + IXGBE_I2C_T_SU_DATA); | |
1292 | ||
1293 | /* Verify data was set correctly */ | |
1294 | *i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL); | |
1295 | if (data != ixgbe_get_i2c_data(i2cctl)) { | |
1296 | status = IXGBE_ERR_I2C; | |
1297 | hw_dbg(hw, "Error - I2C data was not set to %X.\n", data); | |
1298 | } | |
1299 | ||
1300 | return status; | |
1301 | } | |
1302 | ||
1303 | /** | |
1304 | * ixgbe_get_i2c_data - Reads the I2C SDA data bit | |
1305 | * @hw: pointer to hardware structure | |
1306 | * @i2cctl: Current value of I2CCTL register | |
1307 | * | |
1308 | * Returns the I2C data bit value | |
1309 | **/ | |
1310 | static bool ixgbe_get_i2c_data(u32 *i2cctl) | |
1311 | { | |
1312 | bool data; | |
1313 | ||
1314 | if (*i2cctl & IXGBE_I2C_DATA_IN) | |
1315 | data = 1; | |
1316 | else | |
1317 | data = 0; | |
1318 | ||
1319 | return data; | |
1320 | } | |
1321 | ||
1322 | /** | |
1323 | * ixgbe_i2c_bus_clear - Clears the I2C bus | |
1324 | * @hw: pointer to hardware structure | |
1325 | * | |
1326 | * Clears the I2C bus by sending nine clock pulses. | |
1327 | * Used when data line is stuck low. | |
1328 | **/ | |
1329 | static void ixgbe_i2c_bus_clear(struct ixgbe_hw *hw) | |
1330 | { | |
1331 | u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL); | |
1332 | u32 i; | |
1333 | ||
1334 | ixgbe_set_i2c_data(hw, &i2cctl, 1); | |
1335 | ||
1336 | for (i = 0; i < 9; i++) { | |
1337 | ixgbe_raise_i2c_clk(hw, &i2cctl); | |
1338 | ||
1339 | /* Min high period of clock is 4us */ | |
1340 | udelay(IXGBE_I2C_T_HIGH); | |
1341 | ||
1342 | ixgbe_lower_i2c_clk(hw, &i2cctl); | |
1343 | ||
1344 | /* Min low period of clock is 4.7us*/ | |
1345 | udelay(IXGBE_I2C_T_LOW); | |
1346 | } | |
1347 | ||
1348 | /* Put the i2c bus back to default state */ | |
1349 | ixgbe_i2c_stop(hw); | |
1350 | } | |
1351 | ||
0befdb3e JB |
1352 | /** |
1353 | * ixgbe_check_phy_link_tnx - Determine link and speed status | |
1354 | * @hw: pointer to hardware structure | |
1355 | * | |
1356 | * Reads the VS1 register to determine if link is up and the current speed for | |
1357 | * the PHY. | |
1358 | **/ | |
1359 | s32 ixgbe_check_phy_link_tnx(struct ixgbe_hw *hw, ixgbe_link_speed *speed, | |
1360 | bool *link_up) | |
1361 | { | |
1362 | s32 status = 0; | |
1363 | u32 time_out; | |
1364 | u32 max_time_out = 10; | |
1365 | u16 phy_link = 0; | |
1366 | u16 phy_speed = 0; | |
1367 | u16 phy_data = 0; | |
1368 | ||
1369 | /* Initialize speed and link to default case */ | |
1370 | *link_up = false; | |
1371 | *speed = IXGBE_LINK_SPEED_10GB_FULL; | |
1372 | ||
1373 | /* | |
1374 | * Check current speed and link status of the PHY register. | |
1375 | * This is a vendor specific register and may have to | |
1376 | * be changed for other copper PHYs. | |
1377 | */ | |
1378 | for (time_out = 0; time_out < max_time_out; time_out++) { | |
1379 | udelay(10); | |
1380 | status = hw->phy.ops.read_reg(hw, | |
1381 | IXGBE_MDIO_VENDOR_SPECIFIC_1_STATUS, | |
6b73e10d | 1382 | MDIO_MMD_VEND1, |
0befdb3e JB |
1383 | &phy_data); |
1384 | phy_link = phy_data & | |
1385 | IXGBE_MDIO_VENDOR_SPECIFIC_1_LINK_STATUS; | |
1386 | phy_speed = phy_data & | |
1387 | IXGBE_MDIO_VENDOR_SPECIFIC_1_SPEED_STATUS; | |
1388 | if (phy_link == IXGBE_MDIO_VENDOR_SPECIFIC_1_LINK_STATUS) { | |
1389 | *link_up = true; | |
1390 | if (phy_speed == | |
1391 | IXGBE_MDIO_VENDOR_SPECIFIC_1_SPEED_STATUS) | |
1392 | *speed = IXGBE_LINK_SPEED_1GB_FULL; | |
1393 | break; | |
1394 | } | |
1395 | } | |
1396 | ||
1397 | return status; | |
1398 | } | |
1399 | ||
1400 | /** | |
1401 | * ixgbe_get_phy_firmware_version_tnx - Gets the PHY Firmware Version | |
1402 | * @hw: pointer to hardware structure | |
1403 | * @firmware_version: pointer to the PHY Firmware Version | |
1404 | **/ | |
1405 | s32 ixgbe_get_phy_firmware_version_tnx(struct ixgbe_hw *hw, | |
1406 | u16 *firmware_version) | |
1407 | { | |
1408 | s32 status = 0; | |
1409 | ||
6b73e10d | 1410 | status = hw->phy.ops.read_reg(hw, TNX_FW_REV, MDIO_MMD_VEND1, |
0befdb3e JB |
1411 | firmware_version); |
1412 | ||
1413 | return status; | |
1414 | } | |
1415 | ||
fe15e8e1 DS |
1416 | /** |
1417 | * ixgbe_get_phy_firmware_version_generic - Gets the PHY Firmware Version | |
1418 | * @hw: pointer to hardware structure | |
1419 | * @firmware_version: pointer to the PHY Firmware Version | |
1420 | **/ | |
1421 | s32 ixgbe_get_phy_firmware_version_generic(struct ixgbe_hw *hw, | |
1422 | u16 *firmware_version) | |
1423 | { | |
1424 | s32 status = 0; | |
1425 | ||
1426 | status = hw->phy.ops.read_reg(hw, AQ_FW_REV, MDIO_MMD_VEND1, | |
1427 | firmware_version); | |
1428 | ||
1429 | return status; | |
1430 | } | |
1431 | ||
119fc60a MC |
1432 | /** |
1433 | * ixgbe_tn_check_overtemp - Checks if an overtemp occured. | |
1434 | * @hw: pointer to hardware structure | |
1435 | * | |
1436 | * Checks if the LASI temp alarm status was triggered due to overtemp | |
1437 | **/ | |
1438 | s32 ixgbe_tn_check_overtemp(struct ixgbe_hw *hw) | |
1439 | { | |
1440 | s32 status = 0; | |
1441 | u16 phy_data = 0; | |
1442 | ||
1443 | if (hw->device_id != IXGBE_DEV_ID_82599_T3_LOM) | |
1444 | goto out; | |
1445 | ||
1446 | /* Check that the LASI temp alarm status was triggered */ | |
1447 | hw->phy.ops.read_reg(hw, IXGBE_TN_LASI_STATUS_REG, | |
1448 | MDIO_MMD_PMAPMD, &phy_data); | |
1449 | ||
1450 | if (!(phy_data & IXGBE_TN_LASI_STATUS_TEMP_ALARM)) | |
1451 | goto out; | |
1452 | ||
1453 | status = IXGBE_ERR_OVERTEMP; | |
1454 | out: | |
1455 | return status; | |
1456 | } |