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9a799d71 AK |
1 | /******************************************************************************* |
2 | ||
3 | Intel 10 Gigabit PCI Express Linux driver | |
3efac5a0 | 4 | Copyright(c) 1999 - 2009 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++) { | |
6b73e10d | 63 | if (mdio45_probe(&hw->phy.mdio, phy_addr) == 0) { |
c44ade9e JB |
64 | ixgbe_get_phy_id(hw); |
65 | hw->phy.type = | |
66 | ixgbe_get_phy_type_from_id(hw->phy.id); | |
67 | status = 0; | |
68 | break; | |
69 | } | |
9a799d71 | 70 | } |
c44ade9e JB |
71 | } else { |
72 | status = 0; | |
9a799d71 | 73 | } |
c44ade9e | 74 | |
9a799d71 AK |
75 | return status; |
76 | } | |
77 | ||
9a799d71 AK |
78 | /** |
79 | * ixgbe_get_phy_id - Get the phy type | |
80 | * @hw: pointer to hardware structure | |
81 | * | |
82 | **/ | |
83 | static s32 ixgbe_get_phy_id(struct ixgbe_hw *hw) | |
84 | { | |
85 | u32 status; | |
86 | u16 phy_id_high = 0; | |
87 | u16 phy_id_low = 0; | |
88 | ||
6b73e10d | 89 | status = hw->phy.ops.read_reg(hw, MDIO_DEVID1, MDIO_MMD_PMAPMD, |
c44ade9e | 90 | &phy_id_high); |
9a799d71 AK |
91 | |
92 | if (status == 0) { | |
93 | hw->phy.id = (u32)(phy_id_high << 16); | |
6b73e10d | 94 | status = hw->phy.ops.read_reg(hw, MDIO_DEVID2, MDIO_MMD_PMAPMD, |
c44ade9e | 95 | &phy_id_low); |
9a799d71 AK |
96 | hw->phy.id |= (u32)(phy_id_low & IXGBE_PHY_REVISION_MASK); |
97 | hw->phy.revision = (u32)(phy_id_low & ~IXGBE_PHY_REVISION_MASK); | |
98 | } | |
9a799d71 AK |
99 | return status; |
100 | } | |
101 | ||
102 | /** | |
103 | * ixgbe_get_phy_type_from_id - Get the phy type | |
104 | * @hw: pointer to hardware structure | |
105 | * | |
106 | **/ | |
107 | static enum ixgbe_phy_type ixgbe_get_phy_type_from_id(u32 phy_id) | |
108 | { | |
109 | enum ixgbe_phy_type phy_type; | |
110 | ||
111 | switch (phy_id) { | |
0befdb3e JB |
112 | case TN1010_PHY_ID: |
113 | phy_type = ixgbe_phy_tn; | |
114 | break; | |
9a799d71 AK |
115 | case QT2022_PHY_ID: |
116 | phy_type = ixgbe_phy_qt; | |
117 | break; | |
c4900be0 DS |
118 | case ATH_PHY_ID: |
119 | phy_type = ixgbe_phy_nl; | |
120 | break; | |
9a799d71 AK |
121 | default: |
122 | phy_type = ixgbe_phy_unknown; | |
123 | break; | |
124 | } | |
125 | ||
126 | return phy_type; | |
127 | } | |
128 | ||
129 | /** | |
c44ade9e | 130 | * ixgbe_reset_phy_generic - Performs a PHY reset |
9a799d71 AK |
131 | * @hw: pointer to hardware structure |
132 | **/ | |
c44ade9e | 133 | s32 ixgbe_reset_phy_generic(struct ixgbe_hw *hw) |
9a799d71 AK |
134 | { |
135 | /* | |
136 | * Perform soft PHY reset to the PHY_XS. | |
137 | * This will cause a soft reset to the PHY | |
138 | */ | |
6b73e10d BH |
139 | return hw->phy.ops.write_reg(hw, MDIO_CTRL1, MDIO_MMD_PHYXS, |
140 | MDIO_CTRL1_RESET); | |
9a799d71 AK |
141 | } |
142 | ||
143 | /** | |
c44ade9e | 144 | * ixgbe_read_phy_reg_generic - Reads a value from a specified PHY register |
9a799d71 AK |
145 | * @hw: pointer to hardware structure |
146 | * @reg_addr: 32 bit address of PHY register to read | |
147 | * @phy_data: Pointer to read data from PHY register | |
148 | **/ | |
c44ade9e JB |
149 | s32 ixgbe_read_phy_reg_generic(struct ixgbe_hw *hw, u32 reg_addr, |
150 | u32 device_type, u16 *phy_data) | |
9a799d71 AK |
151 | { |
152 | u32 command; | |
153 | u32 i; | |
9a799d71 AK |
154 | u32 data; |
155 | s32 status = 0; | |
156 | u16 gssr; | |
157 | ||
158 | if (IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1) | |
159 | gssr = IXGBE_GSSR_PHY1_SM; | |
160 | else | |
161 | gssr = IXGBE_GSSR_PHY0_SM; | |
162 | ||
163 | if (ixgbe_acquire_swfw_sync(hw, gssr) != 0) | |
164 | status = IXGBE_ERR_SWFW_SYNC; | |
165 | ||
166 | if (status == 0) { | |
167 | /* Setup and write the address cycle command */ | |
168 | command = ((reg_addr << IXGBE_MSCA_NP_ADDR_SHIFT) | | |
c44ade9e | 169 | (device_type << IXGBE_MSCA_DEV_TYPE_SHIFT) | |
6b73e10d | 170 | (hw->phy.mdio.prtad << IXGBE_MSCA_PHY_ADDR_SHIFT) | |
c44ade9e | 171 | (IXGBE_MSCA_ADDR_CYCLE | IXGBE_MSCA_MDI_COMMAND)); |
9a799d71 AK |
172 | |
173 | IXGBE_WRITE_REG(hw, IXGBE_MSCA, command); | |
174 | ||
175 | /* | |
176 | * Check every 10 usec to see if the address cycle completed. | |
177 | * The MDI Command bit will clear when the operation is | |
178 | * complete | |
179 | */ | |
c44ade9e | 180 | for (i = 0; i < IXGBE_MDIO_COMMAND_TIMEOUT; i++) { |
9a799d71 AK |
181 | udelay(10); |
182 | ||
183 | command = IXGBE_READ_REG(hw, IXGBE_MSCA); | |
184 | ||
185 | if ((command & IXGBE_MSCA_MDI_COMMAND) == 0) | |
186 | break; | |
187 | } | |
188 | ||
189 | if ((command & IXGBE_MSCA_MDI_COMMAND) != 0) { | |
190 | hw_dbg(hw, "PHY address command did not complete.\n"); | |
191 | status = IXGBE_ERR_PHY; | |
192 | } | |
193 | ||
194 | if (status == 0) { | |
195 | /* | |
196 | * Address cycle complete, setup and write the read | |
197 | * command | |
198 | */ | |
199 | command = ((reg_addr << IXGBE_MSCA_NP_ADDR_SHIFT) | | |
c44ade9e | 200 | (device_type << IXGBE_MSCA_DEV_TYPE_SHIFT) | |
6b73e10d BH |
201 | (hw->phy.mdio.prtad << |
202 | IXGBE_MSCA_PHY_ADDR_SHIFT) | | |
c44ade9e | 203 | (IXGBE_MSCA_READ | IXGBE_MSCA_MDI_COMMAND)); |
9a799d71 AK |
204 | |
205 | IXGBE_WRITE_REG(hw, IXGBE_MSCA, command); | |
206 | ||
207 | /* | |
208 | * Check every 10 usec to see if the address cycle | |
209 | * completed. The MDI Command bit will clear when the | |
210 | * operation is complete | |
211 | */ | |
c44ade9e | 212 | for (i = 0; i < IXGBE_MDIO_COMMAND_TIMEOUT; i++) { |
9a799d71 AK |
213 | udelay(10); |
214 | ||
215 | command = IXGBE_READ_REG(hw, IXGBE_MSCA); | |
216 | ||
217 | if ((command & IXGBE_MSCA_MDI_COMMAND) == 0) | |
218 | break; | |
219 | } | |
220 | ||
221 | if ((command & IXGBE_MSCA_MDI_COMMAND) != 0) { | |
c44ade9e | 222 | hw_dbg(hw, "PHY read command didn't complete\n"); |
9a799d71 AK |
223 | status = IXGBE_ERR_PHY; |
224 | } else { | |
225 | /* | |
226 | * Read operation is complete. Get the data | |
227 | * from MSRWD | |
228 | */ | |
229 | data = IXGBE_READ_REG(hw, IXGBE_MSRWD); | |
230 | data >>= IXGBE_MSRWD_READ_DATA_SHIFT; | |
231 | *phy_data = (u16)(data); | |
232 | } | |
233 | } | |
234 | ||
235 | ixgbe_release_swfw_sync(hw, gssr); | |
236 | } | |
c44ade9e | 237 | |
9a799d71 AK |
238 | return status; |
239 | } | |
240 | ||
241 | /** | |
c44ade9e | 242 | * ixgbe_write_phy_reg_generic - Writes a value to specified PHY register |
9a799d71 AK |
243 | * @hw: pointer to hardware structure |
244 | * @reg_addr: 32 bit PHY register to write | |
245 | * @device_type: 5 bit device type | |
246 | * @phy_data: Data to write to the PHY register | |
247 | **/ | |
c44ade9e JB |
248 | s32 ixgbe_write_phy_reg_generic(struct ixgbe_hw *hw, u32 reg_addr, |
249 | u32 device_type, u16 phy_data) | |
9a799d71 AK |
250 | { |
251 | u32 command; | |
252 | u32 i; | |
9a799d71 AK |
253 | s32 status = 0; |
254 | u16 gssr; | |
255 | ||
256 | if (IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1) | |
257 | gssr = IXGBE_GSSR_PHY1_SM; | |
258 | else | |
259 | gssr = IXGBE_GSSR_PHY0_SM; | |
260 | ||
261 | if (ixgbe_acquire_swfw_sync(hw, gssr) != 0) | |
262 | status = IXGBE_ERR_SWFW_SYNC; | |
263 | ||
264 | if (status == 0) { | |
265 | /* Put the data in the MDI single read and write data register*/ | |
266 | IXGBE_WRITE_REG(hw, IXGBE_MSRWD, (u32)phy_data); | |
267 | ||
268 | /* Setup and write the address cycle command */ | |
269 | command = ((reg_addr << IXGBE_MSCA_NP_ADDR_SHIFT) | | |
c44ade9e | 270 | (device_type << IXGBE_MSCA_DEV_TYPE_SHIFT) | |
6b73e10d | 271 | (hw->phy.mdio.prtad << IXGBE_MSCA_PHY_ADDR_SHIFT) | |
c44ade9e | 272 | (IXGBE_MSCA_ADDR_CYCLE | IXGBE_MSCA_MDI_COMMAND)); |
9a799d71 AK |
273 | |
274 | IXGBE_WRITE_REG(hw, IXGBE_MSCA, command); | |
275 | ||
276 | /* | |
277 | * Check every 10 usec to see if the address cycle completed. | |
278 | * The MDI Command bit will clear when the operation is | |
279 | * complete | |
280 | */ | |
c44ade9e | 281 | for (i = 0; i < IXGBE_MDIO_COMMAND_TIMEOUT; i++) { |
9a799d71 AK |
282 | udelay(10); |
283 | ||
284 | command = IXGBE_READ_REG(hw, IXGBE_MSCA); | |
285 | ||
c44ade9e | 286 | if ((command & IXGBE_MSCA_MDI_COMMAND) == 0) |
9a799d71 | 287 | break; |
9a799d71 AK |
288 | } |
289 | ||
c44ade9e JB |
290 | if ((command & IXGBE_MSCA_MDI_COMMAND) != 0) { |
291 | hw_dbg(hw, "PHY address cmd didn't complete\n"); | |
9a799d71 | 292 | status = IXGBE_ERR_PHY; |
c44ade9e | 293 | } |
9a799d71 AK |
294 | |
295 | if (status == 0) { | |
296 | /* | |
297 | * Address cycle complete, setup and write the write | |
298 | * command | |
299 | */ | |
300 | command = ((reg_addr << IXGBE_MSCA_NP_ADDR_SHIFT) | | |
c44ade9e | 301 | (device_type << IXGBE_MSCA_DEV_TYPE_SHIFT) | |
6b73e10d BH |
302 | (hw->phy.mdio.prtad << |
303 | IXGBE_MSCA_PHY_ADDR_SHIFT) | | |
c44ade9e | 304 | (IXGBE_MSCA_WRITE | IXGBE_MSCA_MDI_COMMAND)); |
9a799d71 AK |
305 | |
306 | IXGBE_WRITE_REG(hw, IXGBE_MSCA, command); | |
307 | ||
308 | /* | |
309 | * Check every 10 usec to see if the address cycle | |
310 | * completed. The MDI Command bit will clear when the | |
311 | * operation is complete | |
312 | */ | |
c44ade9e | 313 | for (i = 0; i < IXGBE_MDIO_COMMAND_TIMEOUT; i++) { |
9a799d71 AK |
314 | udelay(10); |
315 | ||
316 | command = IXGBE_READ_REG(hw, IXGBE_MSCA); | |
317 | ||
c44ade9e | 318 | if ((command & IXGBE_MSCA_MDI_COMMAND) == 0) |
9a799d71 | 319 | break; |
9a799d71 AK |
320 | } |
321 | ||
c44ade9e JB |
322 | if ((command & IXGBE_MSCA_MDI_COMMAND) != 0) { |
323 | hw_dbg(hw, "PHY address cmd didn't complete\n"); | |
9a799d71 | 324 | status = IXGBE_ERR_PHY; |
c44ade9e | 325 | } |
9a799d71 AK |
326 | } |
327 | ||
328 | ixgbe_release_swfw_sync(hw, gssr); | |
329 | } | |
330 | ||
331 | return status; | |
332 | } | |
333 | ||
334 | /** | |
c44ade9e | 335 | * ixgbe_setup_phy_link_generic - Set and restart autoneg |
9a799d71 AK |
336 | * @hw: pointer to hardware structure |
337 | * | |
338 | * Restart autonegotiation and PHY and waits for completion. | |
339 | **/ | |
c44ade9e | 340 | s32 ixgbe_setup_phy_link_generic(struct ixgbe_hw *hw) |
9a799d71 AK |
341 | { |
342 | s32 status = IXGBE_NOT_IMPLEMENTED; | |
343 | u32 time_out; | |
344 | u32 max_time_out = 10; | |
6b73e10d | 345 | u16 autoneg_reg; |
9a799d71 AK |
346 | |
347 | /* | |
348 | * Set advertisement settings in PHY based on autoneg_advertised | |
349 | * settings. If autoneg_advertised = 0, then advertise default values | |
c44ade9e | 350 | * tnx devices cannot be "forced" to a autoneg 10G and fail. But can |
9a799d71 AK |
351 | * for a 1G. |
352 | */ | |
6b73e10d | 353 | hw->phy.ops.read_reg(hw, MDIO_AN_ADVERTISE, MDIO_MMD_AN, &autoneg_reg); |
9a799d71 AK |
354 | |
355 | if (hw->phy.autoneg_advertised == IXGBE_LINK_SPEED_1GB_FULL) | |
6b73e10d | 356 | autoneg_reg &= ~MDIO_AN_10GBT_CTRL_ADV10G; |
9a799d71 | 357 | else |
6b73e10d | 358 | autoneg_reg |= MDIO_AN_10GBT_CTRL_ADV10G; |
9a799d71 | 359 | |
6b73e10d | 360 | hw->phy.ops.write_reg(hw, MDIO_AN_ADVERTISE, MDIO_MMD_AN, autoneg_reg); |
9a799d71 AK |
361 | |
362 | /* Restart PHY autonegotiation and wait for completion */ | |
6b73e10d | 363 | hw->phy.ops.read_reg(hw, MDIO_CTRL1, MDIO_MMD_AN, &autoneg_reg); |
9a799d71 | 364 | |
6b73e10d | 365 | autoneg_reg |= MDIO_AN_CTRL1_RESTART; |
9a799d71 | 366 | |
6b73e10d | 367 | hw->phy.ops.write_reg(hw, MDIO_CTRL1, MDIO_MMD_AN, autoneg_reg); |
9a799d71 AK |
368 | |
369 | /* Wait for autonegotiation to finish */ | |
370 | for (time_out = 0; time_out < max_time_out; time_out++) { | |
371 | udelay(10); | |
372 | /* Restart PHY autonegotiation and wait for completion */ | |
6b73e10d | 373 | status = hw->phy.ops.read_reg(hw, MDIO_STAT1, MDIO_MMD_AN, |
c44ade9e | 374 | &autoneg_reg); |
9a799d71 | 375 | |
6b73e10d BH |
376 | autoneg_reg &= MDIO_AN_STAT1_COMPLETE; |
377 | if (autoneg_reg == MDIO_AN_STAT1_COMPLETE) { | |
9a799d71 AK |
378 | status = 0; |
379 | break; | |
380 | } | |
381 | } | |
382 | ||
383 | if (time_out == max_time_out) | |
384 | status = IXGBE_ERR_LINK_SETUP; | |
385 | ||
386 | return status; | |
387 | } | |
388 | ||
389 | /** | |
c44ade9e | 390 | * ixgbe_setup_phy_link_speed_generic - Sets the auto advertised capabilities |
9a799d71 AK |
391 | * @hw: pointer to hardware structure |
392 | * @speed: new link speed | |
393 | * @autoneg: true if autonegotiation enabled | |
394 | **/ | |
c44ade9e JB |
395 | s32 ixgbe_setup_phy_link_speed_generic(struct ixgbe_hw *hw, |
396 | ixgbe_link_speed speed, | |
397 | bool autoneg, | |
398 | bool autoneg_wait_to_complete) | |
9a799d71 | 399 | { |
c44ade9e | 400 | |
9a799d71 AK |
401 | /* |
402 | * Clear autoneg_advertised and set new values based on input link | |
403 | * speed. | |
404 | */ | |
405 | hw->phy.autoneg_advertised = 0; | |
406 | ||
407 | if (speed & IXGBE_LINK_SPEED_10GB_FULL) | |
408 | hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_10GB_FULL; | |
c44ade9e | 409 | |
9a799d71 AK |
410 | if (speed & IXGBE_LINK_SPEED_1GB_FULL) |
411 | hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_1GB_FULL; | |
412 | ||
413 | /* Setup link based on the new speed settings */ | |
c44ade9e | 414 | hw->phy.ops.setup_link(hw); |
9a799d71 AK |
415 | |
416 | return 0; | |
417 | } | |
c44ade9e | 418 | |
c4900be0 DS |
419 | /** |
420 | * ixgbe_reset_phy_nl - Performs a PHY reset | |
421 | * @hw: pointer to hardware structure | |
422 | **/ | |
423 | s32 ixgbe_reset_phy_nl(struct ixgbe_hw *hw) | |
424 | { | |
425 | u16 phy_offset, control, eword, edata, block_crc; | |
426 | bool end_data = false; | |
427 | u16 list_offset, data_offset; | |
428 | u16 phy_data = 0; | |
429 | s32 ret_val = 0; | |
430 | u32 i; | |
431 | ||
6b73e10d | 432 | hw->phy.ops.read_reg(hw, MDIO_CTRL1, MDIO_MMD_PHYXS, &phy_data); |
c4900be0 DS |
433 | |
434 | /* reset the PHY and poll for completion */ | |
6b73e10d BH |
435 | hw->phy.ops.write_reg(hw, MDIO_CTRL1, MDIO_MMD_PHYXS, |
436 | (phy_data | MDIO_CTRL1_RESET)); | |
c4900be0 DS |
437 | |
438 | for (i = 0; i < 100; i++) { | |
6b73e10d BH |
439 | hw->phy.ops.read_reg(hw, MDIO_CTRL1, MDIO_MMD_PHYXS, |
440 | &phy_data); | |
441 | if ((phy_data & MDIO_CTRL1_RESET) == 0) | |
c4900be0 DS |
442 | break; |
443 | msleep(10); | |
444 | } | |
445 | ||
6b73e10d | 446 | if ((phy_data & MDIO_CTRL1_RESET) != 0) { |
c4900be0 DS |
447 | hw_dbg(hw, "PHY reset did not complete.\n"); |
448 | ret_val = IXGBE_ERR_PHY; | |
449 | goto out; | |
450 | } | |
451 | ||
452 | /* Get init offsets */ | |
453 | ret_val = ixgbe_get_sfp_init_sequence_offsets(hw, &list_offset, | |
454 | &data_offset); | |
455 | if (ret_val != 0) | |
456 | goto out; | |
457 | ||
458 | ret_val = hw->eeprom.ops.read(hw, data_offset, &block_crc); | |
459 | data_offset++; | |
460 | while (!end_data) { | |
461 | /* | |
462 | * Read control word from PHY init contents offset | |
463 | */ | |
464 | ret_val = hw->eeprom.ops.read(hw, data_offset, &eword); | |
465 | control = (eword & IXGBE_CONTROL_MASK_NL) >> | |
466 | IXGBE_CONTROL_SHIFT_NL; | |
467 | edata = eword & IXGBE_DATA_MASK_NL; | |
468 | switch (control) { | |
469 | case IXGBE_DELAY_NL: | |
470 | data_offset++; | |
471 | hw_dbg(hw, "DELAY: %d MS\n", edata); | |
472 | msleep(edata); | |
473 | break; | |
474 | case IXGBE_DATA_NL: | |
475 | hw_dbg(hw, "DATA: \n"); | |
476 | data_offset++; | |
477 | hw->eeprom.ops.read(hw, data_offset++, | |
478 | &phy_offset); | |
479 | for (i = 0; i < edata; i++) { | |
480 | hw->eeprom.ops.read(hw, data_offset, &eword); | |
481 | hw->phy.ops.write_reg(hw, phy_offset, | |
6b73e10d | 482 | MDIO_MMD_PMAPMD, eword); |
c4900be0 DS |
483 | hw_dbg(hw, "Wrote %4.4x to %4.4x\n", eword, |
484 | phy_offset); | |
485 | data_offset++; | |
486 | phy_offset++; | |
487 | } | |
488 | break; | |
489 | case IXGBE_CONTROL_NL: | |
490 | data_offset++; | |
491 | hw_dbg(hw, "CONTROL: \n"); | |
492 | if (edata == IXGBE_CONTROL_EOL_NL) { | |
493 | hw_dbg(hw, "EOL\n"); | |
494 | end_data = true; | |
495 | } else if (edata == IXGBE_CONTROL_SOL_NL) { | |
496 | hw_dbg(hw, "SOL\n"); | |
497 | } else { | |
498 | hw_dbg(hw, "Bad control value\n"); | |
499 | ret_val = IXGBE_ERR_PHY; | |
500 | goto out; | |
501 | } | |
502 | break; | |
503 | default: | |
504 | hw_dbg(hw, "Bad control type\n"); | |
505 | ret_val = IXGBE_ERR_PHY; | |
506 | goto out; | |
507 | } | |
508 | } | |
509 | ||
510 | out: | |
511 | return ret_val; | |
512 | } | |
513 | ||
514 | /** | |
515 | * ixgbe_identify_sfp_module_generic - Identifies SFP module and assigns | |
516 | * the PHY type. | |
517 | * @hw: pointer to hardware structure | |
518 | * | |
519 | * Searches for and indentifies the SFP module. Assings appropriate PHY type. | |
520 | **/ | |
521 | s32 ixgbe_identify_sfp_module_generic(struct ixgbe_hw *hw) | |
522 | { | |
523 | s32 status = IXGBE_ERR_PHY_ADDR_INVALID; | |
524 | u32 vendor_oui = 0; | |
553b4497 | 525 | enum ixgbe_sfp_type stored_sfp_type = hw->phy.sfp_type; |
c4900be0 DS |
526 | u8 identifier = 0; |
527 | u8 comp_codes_1g = 0; | |
528 | u8 comp_codes_10g = 0; | |
11afc1b1 | 529 | u8 oui_bytes[3] = {0, 0, 0}; |
537d58a0 | 530 | u8 cable_tech = 0; |
11afc1b1 | 531 | u16 enforce_sfp = 0; |
c4900be0 | 532 | |
8ca783ab DS |
533 | if (hw->mac.ops.get_media_type(hw) != ixgbe_media_type_fiber) { |
534 | hw->phy.sfp_type = ixgbe_sfp_type_not_present; | |
535 | status = IXGBE_ERR_SFP_NOT_PRESENT; | |
536 | goto out; | |
537 | } | |
538 | ||
c4900be0 DS |
539 | status = hw->phy.ops.read_i2c_eeprom(hw, IXGBE_SFF_IDENTIFIER, |
540 | &identifier); | |
541 | ||
8ca783ab DS |
542 | if (status == IXGBE_ERR_SFP_NOT_PRESENT || status == IXGBE_ERR_I2C) { |
543 | status = IXGBE_ERR_SFP_NOT_PRESENT; | |
c4900be0 | 544 | hw->phy.sfp_type = ixgbe_sfp_type_not_present; |
8ca783ab DS |
545 | if (hw->phy.type != ixgbe_phy_nl) { |
546 | hw->phy.id = 0; | |
547 | hw->phy.type = ixgbe_phy_unknown; | |
548 | } | |
c4900be0 DS |
549 | goto out; |
550 | } | |
551 | ||
552 | if (identifier == IXGBE_SFF_IDENTIFIER_SFP) { | |
553 | hw->phy.ops.read_i2c_eeprom(hw, IXGBE_SFF_1GBE_COMP_CODES, | |
554 | &comp_codes_1g); | |
555 | hw->phy.ops.read_i2c_eeprom(hw, IXGBE_SFF_10GBE_COMP_CODES, | |
556 | &comp_codes_10g); | |
537d58a0 PWJ |
557 | hw->phy.ops.read_i2c_eeprom(hw, IXGBE_SFF_CABLE_TECHNOLOGY, |
558 | &cable_tech); | |
c4900be0 DS |
559 | |
560 | /* ID Module | |
561 | * ========= | |
11afc1b1 PW |
562 | * 0 SFP_DA_CU |
563 | * 1 SFP_SR | |
564 | * 2 SFP_LR | |
565 | * 3 SFP_DA_CORE0 - 82599-specific | |
566 | * 4 SFP_DA_CORE1 - 82599-specific | |
567 | * 5 SFP_SR/LR_CORE0 - 82599-specific | |
568 | * 6 SFP_SR/LR_CORE1 - 82599-specific | |
c4900be0 | 569 | */ |
11afc1b1 | 570 | if (hw->mac.type == ixgbe_mac_82598EB) { |
537d58a0 | 571 | if (cable_tech & IXGBE_SFF_DA_PASSIVE_CABLE) |
11afc1b1 PW |
572 | hw->phy.sfp_type = ixgbe_sfp_type_da_cu; |
573 | else if (comp_codes_10g & IXGBE_SFF_10GBASESR_CAPABLE) | |
574 | hw->phy.sfp_type = ixgbe_sfp_type_sr; | |
575 | else if (comp_codes_10g & IXGBE_SFF_10GBASELR_CAPABLE) | |
576 | hw->phy.sfp_type = ixgbe_sfp_type_lr; | |
577 | else | |
578 | hw->phy.sfp_type = ixgbe_sfp_type_unknown; | |
579 | } else if (hw->mac.type == ixgbe_mac_82599EB) { | |
537d58a0 | 580 | if (cable_tech & IXGBE_SFF_DA_PASSIVE_CABLE) |
11afc1b1 PW |
581 | if (hw->bus.lan_id == 0) |
582 | hw->phy.sfp_type = | |
583 | ixgbe_sfp_type_da_cu_core0; | |
584 | else | |
585 | hw->phy.sfp_type = | |
586 | ixgbe_sfp_type_da_cu_core1; | |
587 | else if (comp_codes_10g & IXGBE_SFF_10GBASESR_CAPABLE) | |
588 | if (hw->bus.lan_id == 0) | |
589 | hw->phy.sfp_type = | |
590 | ixgbe_sfp_type_srlr_core0; | |
591 | else | |
592 | hw->phy.sfp_type = | |
593 | ixgbe_sfp_type_srlr_core1; | |
594 | else if (comp_codes_10g & IXGBE_SFF_10GBASELR_CAPABLE) | |
595 | if (hw->bus.lan_id == 0) | |
596 | hw->phy.sfp_type = | |
597 | ixgbe_sfp_type_srlr_core0; | |
598 | else | |
599 | hw->phy.sfp_type = | |
600 | ixgbe_sfp_type_srlr_core1; | |
601 | else | |
602 | hw->phy.sfp_type = ixgbe_sfp_type_unknown; | |
603 | } | |
c4900be0 | 604 | |
553b4497 PW |
605 | if (hw->phy.sfp_type != stored_sfp_type) |
606 | hw->phy.sfp_setup_needed = true; | |
607 | ||
608 | /* Determine if the SFP+ PHY is dual speed or not. */ | |
50ac58ba | 609 | hw->phy.multispeed_fiber = false; |
553b4497 PW |
610 | if (((comp_codes_1g & IXGBE_SFF_1GBASESX_CAPABLE) && |
611 | (comp_codes_10g & IXGBE_SFF_10GBASESR_CAPABLE)) || | |
612 | ((comp_codes_1g & IXGBE_SFF_1GBASELX_CAPABLE) && | |
613 | (comp_codes_10g & IXGBE_SFF_10GBASELR_CAPABLE))) | |
614 | hw->phy.multispeed_fiber = true; | |
615 | ||
c4900be0 | 616 | /* Determine PHY vendor */ |
04193058 | 617 | if (hw->phy.type != ixgbe_phy_nl) { |
c4900be0 DS |
618 | hw->phy.id = identifier; |
619 | hw->phy.ops.read_i2c_eeprom(hw, | |
620 | IXGBE_SFF_VENDOR_OUI_BYTE0, | |
621 | &oui_bytes[0]); | |
622 | hw->phy.ops.read_i2c_eeprom(hw, | |
623 | IXGBE_SFF_VENDOR_OUI_BYTE1, | |
624 | &oui_bytes[1]); | |
625 | hw->phy.ops.read_i2c_eeprom(hw, | |
626 | IXGBE_SFF_VENDOR_OUI_BYTE2, | |
627 | &oui_bytes[2]); | |
628 | ||
629 | vendor_oui = | |
630 | ((oui_bytes[0] << IXGBE_SFF_VENDOR_OUI_BYTE0_SHIFT) | | |
631 | (oui_bytes[1] << IXGBE_SFF_VENDOR_OUI_BYTE1_SHIFT) | | |
632 | (oui_bytes[2] << IXGBE_SFF_VENDOR_OUI_BYTE2_SHIFT)); | |
633 | ||
634 | switch (vendor_oui) { | |
635 | case IXGBE_SFF_VENDOR_OUI_TYCO: | |
537d58a0 | 636 | if (cable_tech & IXGBE_SFF_DA_PASSIVE_CABLE) |
c4900be0 DS |
637 | hw->phy.type = ixgbe_phy_tw_tyco; |
638 | break; | |
639 | case IXGBE_SFF_VENDOR_OUI_FTL: | |
640 | hw->phy.type = ixgbe_phy_sfp_ftl; | |
641 | break; | |
642 | case IXGBE_SFF_VENDOR_OUI_AVAGO: | |
643 | hw->phy.type = ixgbe_phy_sfp_avago; | |
644 | break; | |
11afc1b1 PW |
645 | case IXGBE_SFF_VENDOR_OUI_INTEL: |
646 | hw->phy.type = ixgbe_phy_sfp_intel; | |
647 | break; | |
c4900be0 | 648 | default: |
537d58a0 | 649 | if (cable_tech & IXGBE_SFF_DA_PASSIVE_CABLE) |
c4900be0 DS |
650 | hw->phy.type = ixgbe_phy_tw_unknown; |
651 | else | |
652 | hw->phy.type = ixgbe_phy_sfp_unknown; | |
653 | break; | |
654 | } | |
655 | } | |
fa466e91 | 656 | |
537d58a0 PWJ |
657 | /* All passive DA cables are supported */ |
658 | if (cable_tech & IXGBE_SFF_DA_PASSIVE_CABLE) { | |
fa466e91 WJP |
659 | status = 0; |
660 | goto out; | |
661 | } | |
662 | ||
663 | /* 1G SFP modules are not supported */ | |
664 | if (comp_codes_10g == 0) { | |
665 | hw->phy.type = ixgbe_phy_sfp_unsupported; | |
666 | status = IXGBE_ERR_SFP_NOT_SUPPORTED; | |
667 | goto out; | |
668 | } | |
669 | ||
670 | /* Anything else 82598-based is supported */ | |
671 | if (hw->mac.type == ixgbe_mac_82598EB) { | |
11afc1b1 PW |
672 | status = 0; |
673 | goto out; | |
674 | } | |
675 | ||
04193058 PWJ |
676 | /* This is guaranteed to be 82599, no need to check for NULL */ |
677 | hw->mac.ops.get_device_caps(hw, &enforce_sfp); | |
678 | if (!(enforce_sfp & IXGBE_DEVICE_CAPS_ALLOW_ANY_SFP)) { | |
11afc1b1 PW |
679 | /* Make sure we're a supported PHY type */ |
680 | if (hw->phy.type == ixgbe_phy_sfp_intel) { | |
681 | status = 0; | |
682 | } else { | |
683 | hw_dbg(hw, "SFP+ module not supported\n"); | |
fa466e91 | 684 | hw->phy.type = ixgbe_phy_sfp_unsupported; |
11afc1b1 PW |
685 | status = IXGBE_ERR_SFP_NOT_SUPPORTED; |
686 | } | |
687 | } else { | |
688 | status = 0; | |
689 | } | |
c4900be0 DS |
690 | } |
691 | ||
692 | out: | |
693 | return status; | |
694 | } | |
695 | ||
696 | /** | |
697 | * ixgbe_get_sfp_init_sequence_offsets - Checks the MAC's EEPROM to see | |
698 | * if it supports a given SFP+ module type, if so it returns the offsets to the | |
699 | * phy init sequence block. | |
700 | * @hw: pointer to hardware structure | |
701 | * @list_offset: offset to the SFP ID list | |
702 | * @data_offset: offset to the SFP data block | |
703 | **/ | |
704 | s32 ixgbe_get_sfp_init_sequence_offsets(struct ixgbe_hw *hw, | |
705 | u16 *list_offset, | |
706 | u16 *data_offset) | |
707 | { | |
708 | u16 sfp_id; | |
709 | ||
710 | if (hw->phy.sfp_type == ixgbe_sfp_type_unknown) | |
711 | return IXGBE_ERR_SFP_NOT_SUPPORTED; | |
712 | ||
713 | if (hw->phy.sfp_type == ixgbe_sfp_type_not_present) | |
714 | return IXGBE_ERR_SFP_NOT_PRESENT; | |
715 | ||
716 | if ((hw->device_id == IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM) && | |
717 | (hw->phy.sfp_type == ixgbe_sfp_type_da_cu)) | |
718 | return IXGBE_ERR_SFP_NOT_SUPPORTED; | |
719 | ||
720 | /* Read offset to PHY init contents */ | |
721 | hw->eeprom.ops.read(hw, IXGBE_PHY_INIT_OFFSET_NL, list_offset); | |
722 | ||
723 | if ((!*list_offset) || (*list_offset == 0xFFFF)) | |
11afc1b1 | 724 | return IXGBE_ERR_SFP_NO_INIT_SEQ_PRESENT; |
c4900be0 DS |
725 | |
726 | /* Shift offset to first ID word */ | |
727 | (*list_offset)++; | |
728 | ||
729 | /* | |
730 | * Find the matching SFP ID in the EEPROM | |
731 | * and program the init sequence | |
732 | */ | |
733 | hw->eeprom.ops.read(hw, *list_offset, &sfp_id); | |
734 | ||
735 | while (sfp_id != IXGBE_PHY_INIT_END_NL) { | |
736 | if (sfp_id == hw->phy.sfp_type) { | |
737 | (*list_offset)++; | |
738 | hw->eeprom.ops.read(hw, *list_offset, data_offset); | |
739 | if ((!*data_offset) || (*data_offset == 0xFFFF)) { | |
740 | hw_dbg(hw, "SFP+ module not supported\n"); | |
741 | return IXGBE_ERR_SFP_NOT_SUPPORTED; | |
742 | } else { | |
743 | break; | |
744 | } | |
745 | } else { | |
746 | (*list_offset) += 2; | |
747 | if (hw->eeprom.ops.read(hw, *list_offset, &sfp_id)) | |
748 | return IXGBE_ERR_PHY; | |
749 | } | |
750 | } | |
751 | ||
752 | if (sfp_id == IXGBE_PHY_INIT_END_NL) { | |
753 | hw_dbg(hw, "No matching SFP+ module found\n"); | |
754 | return IXGBE_ERR_SFP_NOT_SUPPORTED; | |
755 | } | |
756 | ||
757 | return 0; | |
758 | } | |
759 | ||
11afc1b1 PW |
760 | /** |
761 | * ixgbe_read_i2c_eeprom_generic - Reads 8 bit EEPROM word over I2C interface | |
762 | * @hw: pointer to hardware structure | |
763 | * @byte_offset: EEPROM byte offset to read | |
764 | * @eeprom_data: value read | |
765 | * | |
766 | * Performs byte read operation to SFP module's EEPROM over I2C interface. | |
767 | **/ | |
768 | s32 ixgbe_read_i2c_eeprom_generic(struct ixgbe_hw *hw, u8 byte_offset, | |
769 | u8 *eeprom_data) | |
770 | { | |
771 | return hw->phy.ops.read_i2c_byte(hw, byte_offset, | |
772 | IXGBE_I2C_EEPROM_DEV_ADDR, | |
773 | eeprom_data); | |
774 | } | |
775 | ||
776 | /** | |
777 | * ixgbe_write_i2c_eeprom_generic - Writes 8 bit EEPROM word over I2C interface | |
778 | * @hw: pointer to hardware structure | |
779 | * @byte_offset: EEPROM byte offset to write | |
780 | * @eeprom_data: value to write | |
781 | * | |
782 | * Performs byte write operation to SFP module's EEPROM over I2C interface. | |
783 | **/ | |
784 | s32 ixgbe_write_i2c_eeprom_generic(struct ixgbe_hw *hw, u8 byte_offset, | |
785 | u8 eeprom_data) | |
786 | { | |
787 | return hw->phy.ops.write_i2c_byte(hw, byte_offset, | |
788 | IXGBE_I2C_EEPROM_DEV_ADDR, | |
789 | eeprom_data); | |
790 | } | |
791 | ||
792 | /** | |
793 | * ixgbe_read_i2c_byte_generic - Reads 8 bit word over I2C | |
794 | * @hw: pointer to hardware structure | |
795 | * @byte_offset: byte offset to read | |
796 | * @data: value read | |
797 | * | |
798 | * Performs byte read operation to SFP module's EEPROM over I2C interface at | |
799 | * a specified deivce address. | |
800 | **/ | |
801 | s32 ixgbe_read_i2c_byte_generic(struct ixgbe_hw *hw, u8 byte_offset, | |
802 | u8 dev_addr, u8 *data) | |
803 | { | |
804 | s32 status = 0; | |
805 | u32 max_retry = 1; | |
806 | u32 retry = 0; | |
807 | bool nack = 1; | |
808 | ||
809 | do { | |
810 | ixgbe_i2c_start(hw); | |
811 | ||
812 | /* Device Address and write indication */ | |
813 | status = ixgbe_clock_out_i2c_byte(hw, dev_addr); | |
814 | if (status != 0) | |
815 | goto fail; | |
816 | ||
817 | status = ixgbe_get_i2c_ack(hw); | |
818 | if (status != 0) | |
819 | goto fail; | |
820 | ||
821 | status = ixgbe_clock_out_i2c_byte(hw, byte_offset); | |
822 | if (status != 0) | |
823 | goto fail; | |
824 | ||
825 | status = ixgbe_get_i2c_ack(hw); | |
826 | if (status != 0) | |
827 | goto fail; | |
828 | ||
829 | ixgbe_i2c_start(hw); | |
830 | ||
831 | /* Device Address and read indication */ | |
832 | status = ixgbe_clock_out_i2c_byte(hw, (dev_addr | 0x1)); | |
833 | if (status != 0) | |
834 | goto fail; | |
835 | ||
836 | status = ixgbe_get_i2c_ack(hw); | |
837 | if (status != 0) | |
838 | goto fail; | |
839 | ||
840 | status = ixgbe_clock_in_i2c_byte(hw, data); | |
841 | if (status != 0) | |
842 | goto fail; | |
843 | ||
844 | status = ixgbe_clock_out_i2c_bit(hw, nack); | |
845 | if (status != 0) | |
846 | goto fail; | |
847 | ||
848 | ixgbe_i2c_stop(hw); | |
849 | break; | |
850 | ||
851 | fail: | |
852 | ixgbe_i2c_bus_clear(hw); | |
853 | retry++; | |
854 | if (retry < max_retry) | |
855 | hw_dbg(hw, "I2C byte read error - Retrying.\n"); | |
856 | else | |
857 | hw_dbg(hw, "I2C byte read error.\n"); | |
858 | ||
859 | } while (retry < max_retry); | |
860 | ||
861 | return status; | |
862 | } | |
863 | ||
864 | /** | |
865 | * ixgbe_write_i2c_byte_generic - Writes 8 bit word over I2C | |
866 | * @hw: pointer to hardware structure | |
867 | * @byte_offset: byte offset to write | |
868 | * @data: value to write | |
869 | * | |
870 | * Performs byte write operation to SFP module's EEPROM over I2C interface at | |
871 | * a specified device address. | |
872 | **/ | |
873 | s32 ixgbe_write_i2c_byte_generic(struct ixgbe_hw *hw, u8 byte_offset, | |
874 | u8 dev_addr, u8 data) | |
875 | { | |
876 | s32 status = 0; | |
877 | u32 max_retry = 1; | |
878 | u32 retry = 0; | |
879 | ||
880 | do { | |
881 | ixgbe_i2c_start(hw); | |
882 | ||
883 | status = ixgbe_clock_out_i2c_byte(hw, dev_addr); | |
884 | if (status != 0) | |
885 | goto fail; | |
886 | ||
887 | status = ixgbe_get_i2c_ack(hw); | |
888 | if (status != 0) | |
889 | goto fail; | |
890 | ||
891 | status = ixgbe_clock_out_i2c_byte(hw, byte_offset); | |
892 | if (status != 0) | |
893 | goto fail; | |
894 | ||
895 | status = ixgbe_get_i2c_ack(hw); | |
896 | if (status != 0) | |
897 | goto fail; | |
898 | ||
899 | status = ixgbe_clock_out_i2c_byte(hw, data); | |
900 | if (status != 0) | |
901 | goto fail; | |
902 | ||
903 | status = ixgbe_get_i2c_ack(hw); | |
904 | if (status != 0) | |
905 | goto fail; | |
906 | ||
907 | ixgbe_i2c_stop(hw); | |
908 | break; | |
909 | ||
910 | fail: | |
911 | ixgbe_i2c_bus_clear(hw); | |
912 | retry++; | |
913 | if (retry < max_retry) | |
914 | hw_dbg(hw, "I2C byte write error - Retrying.\n"); | |
915 | else | |
916 | hw_dbg(hw, "I2C byte write error.\n"); | |
917 | } while (retry < max_retry); | |
918 | ||
919 | return status; | |
920 | } | |
921 | ||
922 | /** | |
923 | * ixgbe_i2c_start - Sets I2C start condition | |
924 | * @hw: pointer to hardware structure | |
925 | * | |
926 | * Sets I2C start condition (High -> Low on SDA while SCL is High) | |
927 | **/ | |
928 | static void ixgbe_i2c_start(struct ixgbe_hw *hw) | |
929 | { | |
930 | u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL); | |
931 | ||
932 | /* Start condition must begin with data and clock high */ | |
933 | ixgbe_set_i2c_data(hw, &i2cctl, 1); | |
934 | ixgbe_raise_i2c_clk(hw, &i2cctl); | |
935 | ||
936 | /* Setup time for start condition (4.7us) */ | |
937 | udelay(IXGBE_I2C_T_SU_STA); | |
938 | ||
939 | ixgbe_set_i2c_data(hw, &i2cctl, 0); | |
940 | ||
941 | /* Hold time for start condition (4us) */ | |
942 | udelay(IXGBE_I2C_T_HD_STA); | |
943 | ||
944 | ixgbe_lower_i2c_clk(hw, &i2cctl); | |
945 | ||
946 | /* Minimum low period of clock is 4.7 us */ | |
947 | udelay(IXGBE_I2C_T_LOW); | |
948 | ||
949 | } | |
950 | ||
951 | /** | |
952 | * ixgbe_i2c_stop - Sets I2C stop condition | |
953 | * @hw: pointer to hardware structure | |
954 | * | |
955 | * Sets I2C stop condition (Low -> High on SDA while SCL is High) | |
956 | **/ | |
957 | static void ixgbe_i2c_stop(struct ixgbe_hw *hw) | |
958 | { | |
959 | u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL); | |
960 | ||
961 | /* Stop condition must begin with data low and clock high */ | |
962 | ixgbe_set_i2c_data(hw, &i2cctl, 0); | |
963 | ixgbe_raise_i2c_clk(hw, &i2cctl); | |
964 | ||
965 | /* Setup time for stop condition (4us) */ | |
966 | udelay(IXGBE_I2C_T_SU_STO); | |
967 | ||
968 | ixgbe_set_i2c_data(hw, &i2cctl, 1); | |
969 | ||
970 | /* bus free time between stop and start (4.7us)*/ | |
971 | udelay(IXGBE_I2C_T_BUF); | |
972 | } | |
973 | ||
974 | /** | |
975 | * ixgbe_clock_in_i2c_byte - Clocks in one byte via I2C | |
976 | * @hw: pointer to hardware structure | |
977 | * @data: data byte to clock in | |
978 | * | |
979 | * Clocks in one byte data via I2C data/clock | |
980 | **/ | |
981 | static s32 ixgbe_clock_in_i2c_byte(struct ixgbe_hw *hw, u8 *data) | |
982 | { | |
983 | s32 status = 0; | |
984 | s32 i; | |
985 | bool bit = 0; | |
986 | ||
987 | for (i = 7; i >= 0; i--) { | |
988 | status = ixgbe_clock_in_i2c_bit(hw, &bit); | |
989 | *data |= bit << i; | |
990 | ||
991 | if (status != 0) | |
992 | break; | |
993 | } | |
994 | ||
995 | return status; | |
996 | } | |
997 | ||
998 | /** | |
999 | * ixgbe_clock_out_i2c_byte - Clocks out one byte via I2C | |
1000 | * @hw: pointer to hardware structure | |
1001 | * @data: data byte clocked out | |
1002 | * | |
1003 | * Clocks out one byte data via I2C data/clock | |
1004 | **/ | |
1005 | static s32 ixgbe_clock_out_i2c_byte(struct ixgbe_hw *hw, u8 data) | |
1006 | { | |
1007 | s32 status = 0; | |
1008 | s32 i; | |
1009 | u32 i2cctl; | |
1010 | bool bit = 0; | |
1011 | ||
1012 | for (i = 7; i >= 0; i--) { | |
1013 | bit = (data >> i) & 0x1; | |
1014 | status = ixgbe_clock_out_i2c_bit(hw, bit); | |
1015 | ||
1016 | if (status != 0) | |
1017 | break; | |
1018 | } | |
1019 | ||
1020 | /* Release SDA line (set high) */ | |
1021 | i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL); | |
1022 | i2cctl |= IXGBE_I2C_DATA_OUT; | |
1023 | IXGBE_WRITE_REG(hw, IXGBE_I2CCTL, i2cctl); | |
1024 | ||
1025 | return status; | |
1026 | } | |
1027 | ||
1028 | /** | |
1029 | * ixgbe_get_i2c_ack - Polls for I2C ACK | |
1030 | * @hw: pointer to hardware structure | |
1031 | * | |
1032 | * Clocks in/out one bit via I2C data/clock | |
1033 | **/ | |
1034 | static s32 ixgbe_get_i2c_ack(struct ixgbe_hw *hw) | |
1035 | { | |
1036 | s32 status; | |
1037 | u32 i = 0; | |
1038 | u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL); | |
1039 | u32 timeout = 10; | |
1040 | bool ack = 1; | |
1041 | ||
1042 | status = ixgbe_raise_i2c_clk(hw, &i2cctl); | |
1043 | ||
1044 | if (status != 0) | |
1045 | goto out; | |
1046 | ||
1047 | /* Minimum high period of clock is 4us */ | |
1048 | udelay(IXGBE_I2C_T_HIGH); | |
1049 | ||
1050 | /* Poll for ACK. Note that ACK in I2C spec is | |
1051 | * transition from 1 to 0 */ | |
1052 | for (i = 0; i < timeout; i++) { | |
1053 | i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL); | |
1054 | ack = ixgbe_get_i2c_data(&i2cctl); | |
1055 | ||
1056 | udelay(1); | |
1057 | if (ack == 0) | |
1058 | break; | |
1059 | } | |
1060 | ||
1061 | if (ack == 1) { | |
1062 | hw_dbg(hw, "I2C ack was not received.\n"); | |
1063 | status = IXGBE_ERR_I2C; | |
1064 | } | |
1065 | ||
1066 | ixgbe_lower_i2c_clk(hw, &i2cctl); | |
1067 | ||
1068 | /* Minimum low period of clock is 4.7 us */ | |
1069 | udelay(IXGBE_I2C_T_LOW); | |
1070 | ||
1071 | out: | |
1072 | return status; | |
1073 | } | |
1074 | ||
1075 | /** | |
1076 | * ixgbe_clock_in_i2c_bit - Clocks in one bit via I2C data/clock | |
1077 | * @hw: pointer to hardware structure | |
1078 | * @data: read data value | |
1079 | * | |
1080 | * Clocks in one bit via I2C data/clock | |
1081 | **/ | |
1082 | static s32 ixgbe_clock_in_i2c_bit(struct ixgbe_hw *hw, bool *data) | |
1083 | { | |
1084 | s32 status; | |
1085 | u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL); | |
1086 | ||
1087 | status = ixgbe_raise_i2c_clk(hw, &i2cctl); | |
1088 | ||
1089 | /* Minimum high period of clock is 4us */ | |
1090 | udelay(IXGBE_I2C_T_HIGH); | |
1091 | ||
1092 | i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL); | |
1093 | *data = ixgbe_get_i2c_data(&i2cctl); | |
1094 | ||
1095 | ixgbe_lower_i2c_clk(hw, &i2cctl); | |
1096 | ||
1097 | /* Minimum low period of clock is 4.7 us */ | |
1098 | udelay(IXGBE_I2C_T_LOW); | |
1099 | ||
1100 | return status; | |
1101 | } | |
1102 | ||
1103 | /** | |
1104 | * ixgbe_clock_out_i2c_bit - Clocks in/out one bit via I2C data/clock | |
1105 | * @hw: pointer to hardware structure | |
1106 | * @data: data value to write | |
1107 | * | |
1108 | * Clocks out one bit via I2C data/clock | |
1109 | **/ | |
1110 | static s32 ixgbe_clock_out_i2c_bit(struct ixgbe_hw *hw, bool data) | |
1111 | { | |
1112 | s32 status; | |
1113 | u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL); | |
1114 | ||
1115 | status = ixgbe_set_i2c_data(hw, &i2cctl, data); | |
1116 | if (status == 0) { | |
1117 | status = ixgbe_raise_i2c_clk(hw, &i2cctl); | |
1118 | ||
1119 | /* Minimum high period of clock is 4us */ | |
1120 | udelay(IXGBE_I2C_T_HIGH); | |
1121 | ||
1122 | ixgbe_lower_i2c_clk(hw, &i2cctl); | |
1123 | ||
1124 | /* Minimum low period of clock is 4.7 us. | |
1125 | * This also takes care of the data hold time. | |
1126 | */ | |
1127 | udelay(IXGBE_I2C_T_LOW); | |
1128 | } else { | |
1129 | status = IXGBE_ERR_I2C; | |
1130 | hw_dbg(hw, "I2C data was not set to %X\n", data); | |
1131 | } | |
1132 | ||
1133 | return status; | |
1134 | } | |
1135 | /** | |
1136 | * ixgbe_raise_i2c_clk - Raises the I2C SCL clock | |
1137 | * @hw: pointer to hardware structure | |
1138 | * @i2cctl: Current value of I2CCTL register | |
1139 | * | |
1140 | * Raises the I2C clock line '0'->'1' | |
1141 | **/ | |
1142 | static s32 ixgbe_raise_i2c_clk(struct ixgbe_hw *hw, u32 *i2cctl) | |
1143 | { | |
1144 | s32 status = 0; | |
1145 | ||
1146 | *i2cctl |= IXGBE_I2C_CLK_OUT; | |
1147 | ||
1148 | IXGBE_WRITE_REG(hw, IXGBE_I2CCTL, *i2cctl); | |
1149 | ||
1150 | /* SCL rise time (1000ns) */ | |
1151 | udelay(IXGBE_I2C_T_RISE); | |
1152 | ||
1153 | return status; | |
1154 | } | |
1155 | ||
1156 | /** | |
1157 | * ixgbe_lower_i2c_clk - Lowers the I2C SCL clock | |
1158 | * @hw: pointer to hardware structure | |
1159 | * @i2cctl: Current value of I2CCTL register | |
1160 | * | |
1161 | * Lowers the I2C clock line '1'->'0' | |
1162 | **/ | |
1163 | static void ixgbe_lower_i2c_clk(struct ixgbe_hw *hw, u32 *i2cctl) | |
1164 | { | |
1165 | ||
1166 | *i2cctl &= ~IXGBE_I2C_CLK_OUT; | |
1167 | ||
1168 | IXGBE_WRITE_REG(hw, IXGBE_I2CCTL, *i2cctl); | |
1169 | ||
1170 | /* SCL fall time (300ns) */ | |
1171 | udelay(IXGBE_I2C_T_FALL); | |
1172 | } | |
1173 | ||
1174 | /** | |
1175 | * ixgbe_set_i2c_data - Sets the I2C data bit | |
1176 | * @hw: pointer to hardware structure | |
1177 | * @i2cctl: Current value of I2CCTL register | |
1178 | * @data: I2C data value (0 or 1) to set | |
1179 | * | |
1180 | * Sets the I2C data bit | |
1181 | **/ | |
1182 | static s32 ixgbe_set_i2c_data(struct ixgbe_hw *hw, u32 *i2cctl, bool data) | |
1183 | { | |
1184 | s32 status = 0; | |
1185 | ||
1186 | if (data) | |
1187 | *i2cctl |= IXGBE_I2C_DATA_OUT; | |
1188 | else | |
1189 | *i2cctl &= ~IXGBE_I2C_DATA_OUT; | |
1190 | ||
1191 | IXGBE_WRITE_REG(hw, IXGBE_I2CCTL, *i2cctl); | |
1192 | ||
1193 | /* Data rise/fall (1000ns/300ns) and set-up time (250ns) */ | |
1194 | udelay(IXGBE_I2C_T_RISE + IXGBE_I2C_T_FALL + IXGBE_I2C_T_SU_DATA); | |
1195 | ||
1196 | /* Verify data was set correctly */ | |
1197 | *i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL); | |
1198 | if (data != ixgbe_get_i2c_data(i2cctl)) { | |
1199 | status = IXGBE_ERR_I2C; | |
1200 | hw_dbg(hw, "Error - I2C data was not set to %X.\n", data); | |
1201 | } | |
1202 | ||
1203 | return status; | |
1204 | } | |
1205 | ||
1206 | /** | |
1207 | * ixgbe_get_i2c_data - Reads the I2C SDA data bit | |
1208 | * @hw: pointer to hardware structure | |
1209 | * @i2cctl: Current value of I2CCTL register | |
1210 | * | |
1211 | * Returns the I2C data bit value | |
1212 | **/ | |
1213 | static bool ixgbe_get_i2c_data(u32 *i2cctl) | |
1214 | { | |
1215 | bool data; | |
1216 | ||
1217 | if (*i2cctl & IXGBE_I2C_DATA_IN) | |
1218 | data = 1; | |
1219 | else | |
1220 | data = 0; | |
1221 | ||
1222 | return data; | |
1223 | } | |
1224 | ||
1225 | /** | |
1226 | * ixgbe_i2c_bus_clear - Clears the I2C bus | |
1227 | * @hw: pointer to hardware structure | |
1228 | * | |
1229 | * Clears the I2C bus by sending nine clock pulses. | |
1230 | * Used when data line is stuck low. | |
1231 | **/ | |
1232 | static void ixgbe_i2c_bus_clear(struct ixgbe_hw *hw) | |
1233 | { | |
1234 | u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL); | |
1235 | u32 i; | |
1236 | ||
1237 | ixgbe_set_i2c_data(hw, &i2cctl, 1); | |
1238 | ||
1239 | for (i = 0; i < 9; i++) { | |
1240 | ixgbe_raise_i2c_clk(hw, &i2cctl); | |
1241 | ||
1242 | /* Min high period of clock is 4us */ | |
1243 | udelay(IXGBE_I2C_T_HIGH); | |
1244 | ||
1245 | ixgbe_lower_i2c_clk(hw, &i2cctl); | |
1246 | ||
1247 | /* Min low period of clock is 4.7us*/ | |
1248 | udelay(IXGBE_I2C_T_LOW); | |
1249 | } | |
1250 | ||
1251 | /* Put the i2c bus back to default state */ | |
1252 | ixgbe_i2c_stop(hw); | |
1253 | } | |
1254 | ||
0befdb3e JB |
1255 | /** |
1256 | * ixgbe_check_phy_link_tnx - Determine link and speed status | |
1257 | * @hw: pointer to hardware structure | |
1258 | * | |
1259 | * Reads the VS1 register to determine if link is up and the current speed for | |
1260 | * the PHY. | |
1261 | **/ | |
1262 | s32 ixgbe_check_phy_link_tnx(struct ixgbe_hw *hw, ixgbe_link_speed *speed, | |
1263 | bool *link_up) | |
1264 | { | |
1265 | s32 status = 0; | |
1266 | u32 time_out; | |
1267 | u32 max_time_out = 10; | |
1268 | u16 phy_link = 0; | |
1269 | u16 phy_speed = 0; | |
1270 | u16 phy_data = 0; | |
1271 | ||
1272 | /* Initialize speed and link to default case */ | |
1273 | *link_up = false; | |
1274 | *speed = IXGBE_LINK_SPEED_10GB_FULL; | |
1275 | ||
1276 | /* | |
1277 | * Check current speed and link status of the PHY register. | |
1278 | * This is a vendor specific register and may have to | |
1279 | * be changed for other copper PHYs. | |
1280 | */ | |
1281 | for (time_out = 0; time_out < max_time_out; time_out++) { | |
1282 | udelay(10); | |
1283 | status = hw->phy.ops.read_reg(hw, | |
1284 | IXGBE_MDIO_VENDOR_SPECIFIC_1_STATUS, | |
6b73e10d | 1285 | MDIO_MMD_VEND1, |
0befdb3e JB |
1286 | &phy_data); |
1287 | phy_link = phy_data & | |
1288 | IXGBE_MDIO_VENDOR_SPECIFIC_1_LINK_STATUS; | |
1289 | phy_speed = phy_data & | |
1290 | IXGBE_MDIO_VENDOR_SPECIFIC_1_SPEED_STATUS; | |
1291 | if (phy_link == IXGBE_MDIO_VENDOR_SPECIFIC_1_LINK_STATUS) { | |
1292 | *link_up = true; | |
1293 | if (phy_speed == | |
1294 | IXGBE_MDIO_VENDOR_SPECIFIC_1_SPEED_STATUS) | |
1295 | *speed = IXGBE_LINK_SPEED_1GB_FULL; | |
1296 | break; | |
1297 | } | |
1298 | } | |
1299 | ||
1300 | return status; | |
1301 | } | |
1302 | ||
1303 | /** | |
1304 | * ixgbe_get_phy_firmware_version_tnx - Gets the PHY Firmware Version | |
1305 | * @hw: pointer to hardware structure | |
1306 | * @firmware_version: pointer to the PHY Firmware Version | |
1307 | **/ | |
1308 | s32 ixgbe_get_phy_firmware_version_tnx(struct ixgbe_hw *hw, | |
1309 | u16 *firmware_version) | |
1310 | { | |
1311 | s32 status = 0; | |
1312 | ||
6b73e10d | 1313 | status = hw->phy.ops.read_reg(hw, TNX_FW_REV, MDIO_MMD_VEND1, |
0befdb3e JB |
1314 | firmware_version); |
1315 | ||
1316 | return status; | |
1317 | } | |
1318 |