Commit | Line | Data |
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1da177e4 LT |
1 | /******************************************************************************* |
2 | ||
0abb6eb1 | 3 | Intel PRO/10GbE Linux driver |
f731a9ef | 4 | Copyright(c) 1999 - 2008 Intel Corporation. |
0abb6eb1 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 | |
1da177e4 | 13 | more details. |
0abb6eb1 | 14 | |
1da177e4 | 15 | You should have received a copy of the GNU General Public License along with |
0abb6eb1 AK |
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 | ||
1da177e4 LT |
22 | Contact Information: |
23 | Linux NICS <linux.nics@intel.com> | |
0abb6eb1 | 24 | e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> |
1da177e4 LT |
25 | Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
26 | ||
27 | *******************************************************************************/ | |
28 | ||
29 | #include "ixgb_hw.h" | |
30 | #include "ixgb_ee.h" | |
31 | /* Local prototypes */ | |
222441a6 | 32 | static u16 ixgb_shift_in_bits(struct ixgb_hw *hw); |
1da177e4 LT |
33 | |
34 | static void ixgb_shift_out_bits(struct ixgb_hw *hw, | |
222441a6 JP |
35 | u16 data, |
36 | u16 count); | |
1da177e4 LT |
37 | static void ixgb_standby_eeprom(struct ixgb_hw *hw); |
38 | ||
446490ca | 39 | static bool ixgb_wait_eeprom_command(struct ixgb_hw *hw); |
1da177e4 LT |
40 | |
41 | static void ixgb_cleanup_eeprom(struct ixgb_hw *hw); | |
42 | ||
43 | /****************************************************************************** | |
44 | * Raises the EEPROM's clock input. | |
45 | * | |
46 | * hw - Struct containing variables accessed by shared code | |
47 | * eecd_reg - EECD's current value | |
48 | *****************************************************************************/ | |
49 | static void | |
50 | ixgb_raise_clock(struct ixgb_hw *hw, | |
222441a6 | 51 | u32 *eecd_reg) |
1da177e4 LT |
52 | { |
53 | /* Raise the clock input to the EEPROM (by setting the SK bit), and then | |
54 | * wait 50 microseconds. | |
55 | */ | |
56 | *eecd_reg = *eecd_reg | IXGB_EECD_SK; | |
57 | IXGB_WRITE_REG(hw, EECD, *eecd_reg); | |
58 | udelay(50); | |
59 | return; | |
60 | } | |
61 | ||
62 | /****************************************************************************** | |
63 | * Lowers the EEPROM's clock input. | |
64 | * | |
65 | * hw - Struct containing variables accessed by shared code | |
66 | * eecd_reg - EECD's current value | |
67 | *****************************************************************************/ | |
68 | static void | |
69 | ixgb_lower_clock(struct ixgb_hw *hw, | |
222441a6 | 70 | u32 *eecd_reg) |
1da177e4 LT |
71 | { |
72 | /* Lower the clock input to the EEPROM (by clearing the SK bit), and then | |
73 | * wait 50 microseconds. | |
74 | */ | |
75 | *eecd_reg = *eecd_reg & ~IXGB_EECD_SK; | |
76 | IXGB_WRITE_REG(hw, EECD, *eecd_reg); | |
77 | udelay(50); | |
78 | return; | |
79 | } | |
80 | ||
81 | /****************************************************************************** | |
82 | * Shift data bits out to the EEPROM. | |
83 | * | |
84 | * hw - Struct containing variables accessed by shared code | |
85 | * data - data to send to the EEPROM | |
86 | * count - number of bits to shift out | |
87 | *****************************************************************************/ | |
88 | static void | |
89 | ixgb_shift_out_bits(struct ixgb_hw *hw, | |
222441a6 JP |
90 | u16 data, |
91 | u16 count) | |
1da177e4 | 92 | { |
222441a6 JP |
93 | u32 eecd_reg; |
94 | u32 mask; | |
1da177e4 LT |
95 | |
96 | /* We need to shift "count" bits out to the EEPROM. So, value in the | |
97 | * "data" parameter will be shifted out to the EEPROM one bit at a time. | |
98 | * In order to do this, "data" must be broken down into bits. | |
99 | */ | |
100 | mask = 0x01 << (count - 1); | |
101 | eecd_reg = IXGB_READ_REG(hw, EECD); | |
102 | eecd_reg &= ~(IXGB_EECD_DO | IXGB_EECD_DI); | |
103 | do { | |
104 | /* A "1" is shifted out to the EEPROM by setting bit "DI" to a "1", | |
105 | * and then raising and then lowering the clock (the SK bit controls | |
106 | * the clock input to the EEPROM). A "0" is shifted out to the EEPROM | |
107 | * by setting "DI" to "0" and then raising and then lowering the clock. | |
108 | */ | |
109 | eecd_reg &= ~IXGB_EECD_DI; | |
110 | ||
03f83041 | 111 | if (data & mask) |
1da177e4 LT |
112 | eecd_reg |= IXGB_EECD_DI; |
113 | ||
114 | IXGB_WRITE_REG(hw, EECD, eecd_reg); | |
115 | ||
116 | udelay(50); | |
117 | ||
118 | ixgb_raise_clock(hw, &eecd_reg); | |
119 | ixgb_lower_clock(hw, &eecd_reg); | |
120 | ||
121 | mask = mask >> 1; | |
122 | ||
9a432992 | 123 | } while (mask); |
1da177e4 LT |
124 | |
125 | /* We leave the "DI" bit set to "0" when we leave this routine. */ | |
126 | eecd_reg &= ~IXGB_EECD_DI; | |
127 | IXGB_WRITE_REG(hw, EECD, eecd_reg); | |
128 | return; | |
129 | } | |
130 | ||
131 | /****************************************************************************** | |
132 | * Shift data bits in from the EEPROM | |
133 | * | |
134 | * hw - Struct containing variables accessed by shared code | |
135 | *****************************************************************************/ | |
222441a6 | 136 | static u16 |
1da177e4 LT |
137 | ixgb_shift_in_bits(struct ixgb_hw *hw) |
138 | { | |
222441a6 JP |
139 | u32 eecd_reg; |
140 | u32 i; | |
141 | u16 data; | |
1da177e4 LT |
142 | |
143 | /* In order to read a register from the EEPROM, we need to shift 16 bits | |
144 | * in from the EEPROM. Bits are "shifted in" by raising the clock input to | |
145 | * the EEPROM (setting the SK bit), and then reading the value of the "DO" | |
146 | * bit. During this "shifting in" process the "DI" bit should always be | |
147 | * clear.. | |
148 | */ | |
149 | ||
150 | eecd_reg = IXGB_READ_REG(hw, EECD); | |
151 | ||
152 | eecd_reg &= ~(IXGB_EECD_DO | IXGB_EECD_DI); | |
153 | data = 0; | |
154 | ||
1459336d | 155 | for (i = 0; i < 16; i++) { |
1da177e4 LT |
156 | data = data << 1; |
157 | ixgb_raise_clock(hw, &eecd_reg); | |
158 | ||
159 | eecd_reg = IXGB_READ_REG(hw, EECD); | |
160 | ||
161 | eecd_reg &= ~(IXGB_EECD_DI); | |
03f83041 | 162 | if (eecd_reg & IXGB_EECD_DO) |
1da177e4 LT |
163 | data |= 1; |
164 | ||
165 | ixgb_lower_clock(hw, &eecd_reg); | |
166 | } | |
167 | ||
168 | return data; | |
169 | } | |
170 | ||
171 | /****************************************************************************** | |
172 | * Prepares EEPROM for access | |
173 | * | |
174 | * hw - Struct containing variables accessed by shared code | |
175 | * | |
176 | * Lowers EEPROM clock. Clears input pin. Sets the chip select pin. This | |
177 | * function should be called before issuing a command to the EEPROM. | |
178 | *****************************************************************************/ | |
179 | static void | |
180 | ixgb_setup_eeprom(struct ixgb_hw *hw) | |
181 | { | |
222441a6 | 182 | u32 eecd_reg; |
1da177e4 LT |
183 | |
184 | eecd_reg = IXGB_READ_REG(hw, EECD); | |
185 | ||
186 | /* Clear SK and DI */ | |
187 | eecd_reg &= ~(IXGB_EECD_SK | IXGB_EECD_DI); | |
188 | IXGB_WRITE_REG(hw, EECD, eecd_reg); | |
189 | ||
190 | /* Set CS */ | |
191 | eecd_reg |= IXGB_EECD_CS; | |
192 | IXGB_WRITE_REG(hw, EECD, eecd_reg); | |
193 | return; | |
194 | } | |
195 | ||
196 | /****************************************************************************** | |
197 | * Returns EEPROM to a "standby" state | |
198 | * | |
199 | * hw - Struct containing variables accessed by shared code | |
200 | *****************************************************************************/ | |
201 | static void | |
202 | ixgb_standby_eeprom(struct ixgb_hw *hw) | |
203 | { | |
222441a6 | 204 | u32 eecd_reg; |
1da177e4 LT |
205 | |
206 | eecd_reg = IXGB_READ_REG(hw, EECD); | |
207 | ||
52035bdb | 208 | /* Deselect EEPROM */ |
1da177e4 LT |
209 | eecd_reg &= ~(IXGB_EECD_CS | IXGB_EECD_SK); |
210 | IXGB_WRITE_REG(hw, EECD, eecd_reg); | |
211 | udelay(50); | |
212 | ||
213 | /* Clock high */ | |
214 | eecd_reg |= IXGB_EECD_SK; | |
215 | IXGB_WRITE_REG(hw, EECD, eecd_reg); | |
216 | udelay(50); | |
217 | ||
218 | /* Select EEPROM */ | |
219 | eecd_reg |= IXGB_EECD_CS; | |
220 | IXGB_WRITE_REG(hw, EECD, eecd_reg); | |
221 | udelay(50); | |
222 | ||
223 | /* Clock low */ | |
224 | eecd_reg &= ~IXGB_EECD_SK; | |
225 | IXGB_WRITE_REG(hw, EECD, eecd_reg); | |
226 | udelay(50); | |
227 | return; | |
228 | } | |
229 | ||
230 | /****************************************************************************** | |
231 | * Raises then lowers the EEPROM's clock pin | |
232 | * | |
233 | * hw - Struct containing variables accessed by shared code | |
234 | *****************************************************************************/ | |
235 | static void | |
236 | ixgb_clock_eeprom(struct ixgb_hw *hw) | |
237 | { | |
222441a6 | 238 | u32 eecd_reg; |
1da177e4 LT |
239 | |
240 | eecd_reg = IXGB_READ_REG(hw, EECD); | |
241 | ||
242 | /* Rising edge of clock */ | |
243 | eecd_reg |= IXGB_EECD_SK; | |
244 | IXGB_WRITE_REG(hw, EECD, eecd_reg); | |
245 | udelay(50); | |
246 | ||
247 | /* Falling edge of clock */ | |
248 | eecd_reg &= ~IXGB_EECD_SK; | |
249 | IXGB_WRITE_REG(hw, EECD, eecd_reg); | |
250 | udelay(50); | |
251 | return; | |
252 | } | |
253 | ||
254 | /****************************************************************************** | |
255 | * Terminates a command by lowering the EEPROM's chip select pin | |
256 | * | |
257 | * hw - Struct containing variables accessed by shared code | |
258 | *****************************************************************************/ | |
259 | static void | |
260 | ixgb_cleanup_eeprom(struct ixgb_hw *hw) | |
261 | { | |
222441a6 | 262 | u32 eecd_reg; |
1da177e4 LT |
263 | |
264 | eecd_reg = IXGB_READ_REG(hw, EECD); | |
265 | ||
266 | eecd_reg &= ~(IXGB_EECD_CS | IXGB_EECD_DI); | |
267 | ||
268 | IXGB_WRITE_REG(hw, EECD, eecd_reg); | |
269 | ||
270 | ixgb_clock_eeprom(hw); | |
271 | return; | |
272 | } | |
273 | ||
274 | /****************************************************************************** | |
275 | * Waits for the EEPROM to finish the current command. | |
276 | * | |
277 | * hw - Struct containing variables accessed by shared code | |
278 | * | |
279 | * The command is done when the EEPROM's data out pin goes high. | |
280 | * | |
281 | * Returns: | |
446490ca JP |
282 | * true: EEPROM data pin is high before timeout. |
283 | * false: Time expired. | |
1da177e4 | 284 | *****************************************************************************/ |
446490ca | 285 | static bool |
1da177e4 LT |
286 | ixgb_wait_eeprom_command(struct ixgb_hw *hw) |
287 | { | |
222441a6 JP |
288 | u32 eecd_reg; |
289 | u32 i; | |
1da177e4 LT |
290 | |
291 | /* Toggle the CS line. This in effect tells to EEPROM to actually execute | |
292 | * the command in question. | |
293 | */ | |
294 | ixgb_standby_eeprom(hw); | |
295 | ||
52035bdb | 296 | /* Now read DO repeatedly until is high (equal to '1'). The EEPROM will |
1da177e4 LT |
297 | * signal that the command has been completed by raising the DO signal. |
298 | * If DO does not go high in 10 milliseconds, then error out. | |
299 | */ | |
1459336d | 300 | for (i = 0; i < 200; i++) { |
1da177e4 LT |
301 | eecd_reg = IXGB_READ_REG(hw, EECD); |
302 | ||
03f83041 | 303 | if (eecd_reg & IXGB_EECD_DO) |
446490ca | 304 | return (true); |
1da177e4 LT |
305 | |
306 | udelay(50); | |
307 | } | |
308 | ASSERT(0); | |
446490ca | 309 | return (false); |
1da177e4 LT |
310 | } |
311 | ||
312 | /****************************************************************************** | |
313 | * Verifies that the EEPROM has a valid checksum | |
314 | * | |
315 | * hw - Struct containing variables accessed by shared code | |
316 | * | |
317 | * Reads the first 64 16 bit words of the EEPROM and sums the values read. | |
59c51591 | 318 | * If the sum of the 64 16 bit words is 0xBABA, the EEPROM's checksum is |
1da177e4 LT |
319 | * valid. |
320 | * | |
321 | * Returns: | |
446490ca JP |
322 | * true: Checksum is valid |
323 | * false: Checksum is not valid. | |
1da177e4 | 324 | *****************************************************************************/ |
446490ca | 325 | bool |
1da177e4 LT |
326 | ixgb_validate_eeprom_checksum(struct ixgb_hw *hw) |
327 | { | |
222441a6 JP |
328 | u16 checksum = 0; |
329 | u16 i; | |
1da177e4 | 330 | |
1459336d | 331 | for (i = 0; i < (EEPROM_CHECKSUM_REG + 1); i++) |
1da177e4 LT |
332 | checksum += ixgb_read_eeprom(hw, i); |
333 | ||
03f83041 | 334 | if (checksum == (u16) EEPROM_SUM) |
446490ca | 335 | return (true); |
1da177e4 | 336 | else |
446490ca | 337 | return (false); |
1da177e4 LT |
338 | } |
339 | ||
340 | /****************************************************************************** | |
341 | * Calculates the EEPROM checksum and writes it to the EEPROM | |
342 | * | |
343 | * hw - Struct containing variables accessed by shared code | |
344 | * | |
345 | * Sums the first 63 16 bit words of the EEPROM. Subtracts the sum from 0xBABA. | |
346 | * Writes the difference to word offset 63 of the EEPROM. | |
347 | *****************************************************************************/ | |
348 | void | |
349 | ixgb_update_eeprom_checksum(struct ixgb_hw *hw) | |
350 | { | |
222441a6 JP |
351 | u16 checksum = 0; |
352 | u16 i; | |
1da177e4 | 353 | |
1459336d | 354 | for (i = 0; i < EEPROM_CHECKSUM_REG; i++) |
1da177e4 LT |
355 | checksum += ixgb_read_eeprom(hw, i); |
356 | ||
222441a6 | 357 | checksum = (u16) EEPROM_SUM - checksum; |
1da177e4 LT |
358 | |
359 | ixgb_write_eeprom(hw, EEPROM_CHECKSUM_REG, checksum); | |
360 | return; | |
361 | } | |
362 | ||
363 | /****************************************************************************** | |
364 | * Writes a 16 bit word to a given offset in the EEPROM. | |
365 | * | |
366 | * hw - Struct containing variables accessed by shared code | |
367 | * reg - offset within the EEPROM to be written to | |
52035bdb | 368 | * data - 16 bit word to be written to the EEPROM |
1da177e4 LT |
369 | * |
370 | * If ixgb_update_eeprom_checksum is not called after this function, the | |
371 | * EEPROM will most likely contain an invalid checksum. | |
372 | * | |
373 | *****************************************************************************/ | |
374 | void | |
222441a6 | 375 | ixgb_write_eeprom(struct ixgb_hw *hw, u16 offset, u16 data) |
1da177e4 LT |
376 | { |
377 | struct ixgb_ee_map_type *ee_map = (struct ixgb_ee_map_type *)hw->eeprom; | |
378 | ||
379 | /* Prepare the EEPROM for writing */ | |
380 | ixgb_setup_eeprom(hw); | |
381 | ||
382 | /* Send the 9-bit EWEN (write enable) command to the EEPROM (5-bit opcode | |
383 | * plus 4-bit dummy). This puts the EEPROM into write/erase mode. | |
384 | */ | |
385 | ixgb_shift_out_bits(hw, EEPROM_EWEN_OPCODE, 5); | |
386 | ixgb_shift_out_bits(hw, 0, 4); | |
387 | ||
388 | /* Prepare the EEPROM */ | |
389 | ixgb_standby_eeprom(hw); | |
390 | ||
391 | /* Send the Write command (3-bit opcode + 6-bit addr) */ | |
392 | ixgb_shift_out_bits(hw, EEPROM_WRITE_OPCODE, 3); | |
393 | ixgb_shift_out_bits(hw, offset, 6); | |
394 | ||
395 | /* Send the data */ | |
396 | ixgb_shift_out_bits(hw, data, 16); | |
397 | ||
398 | ixgb_wait_eeprom_command(hw); | |
399 | ||
400 | /* Recover from write */ | |
401 | ixgb_standby_eeprom(hw); | |
402 | ||
403 | /* Send the 9-bit EWDS (write disable) command to the EEPROM (5-bit | |
404 | * opcode plus 4-bit dummy). This takes the EEPROM out of write/erase | |
405 | * mode. | |
406 | */ | |
407 | ixgb_shift_out_bits(hw, EEPROM_EWDS_OPCODE, 5); | |
408 | ixgb_shift_out_bits(hw, 0, 4); | |
409 | ||
410 | /* Done with writing */ | |
411 | ixgb_cleanup_eeprom(hw); | |
412 | ||
413 | /* clear the init_ctrl_reg_1 to signify that the cache is invalidated */ | |
c676504e | 414 | ee_map->init_ctrl_reg_1 = cpu_to_le16(EEPROM_ICW1_SIGNATURE_CLEAR); |
1da177e4 LT |
415 | |
416 | return; | |
417 | } | |
418 | ||
419 | /****************************************************************************** | |
420 | * Reads a 16 bit word from the EEPROM. | |
421 | * | |
422 | * hw - Struct containing variables accessed by shared code | |
423 | * offset - offset of 16 bit word in the EEPROM to read | |
424 | * | |
425 | * Returns: | |
426 | * The 16-bit value read from the eeprom | |
427 | *****************************************************************************/ | |
222441a6 | 428 | u16 |
1da177e4 | 429 | ixgb_read_eeprom(struct ixgb_hw *hw, |
222441a6 | 430 | u16 offset) |
1da177e4 | 431 | { |
222441a6 | 432 | u16 data; |
1da177e4 LT |
433 | |
434 | /* Prepare the EEPROM for reading */ | |
435 | ixgb_setup_eeprom(hw); | |
436 | ||
437 | /* Send the READ command (opcode + addr) */ | |
438 | ixgb_shift_out_bits(hw, EEPROM_READ_OPCODE, 3); | |
439 | /* | |
440 | * We have a 64 word EEPROM, there are 6 address bits | |
441 | */ | |
442 | ixgb_shift_out_bits(hw, offset, 6); | |
443 | ||
444 | /* Read the data */ | |
445 | data = ixgb_shift_in_bits(hw); | |
446 | ||
447 | /* End this read operation */ | |
448 | ixgb_standby_eeprom(hw); | |
449 | ||
450 | return (data); | |
451 | } | |
452 | ||
453 | /****************************************************************************** | |
454 | * Reads eeprom and stores data in shared structure. | |
455 | * Validates eeprom checksum and eeprom signature. | |
456 | * | |
457 | * hw - Struct containing variables accessed by shared code | |
458 | * | |
459 | * Returns: | |
446490ca JP |
460 | * true: if eeprom read is successful |
461 | * false: otherwise. | |
1da177e4 | 462 | *****************************************************************************/ |
446490ca | 463 | bool |
1da177e4 LT |
464 | ixgb_get_eeprom_data(struct ixgb_hw *hw) |
465 | { | |
222441a6 JP |
466 | u16 i; |
467 | u16 checksum = 0; | |
1da177e4 LT |
468 | struct ixgb_ee_map_type *ee_map; |
469 | ||
470 | DEBUGFUNC("ixgb_get_eeprom_data"); | |
471 | ||
472 | ee_map = (struct ixgb_ee_map_type *)hw->eeprom; | |
473 | ||
474 | DEBUGOUT("ixgb_ee: Reading eeprom data\n"); | |
1459336d | 475 | for (i = 0; i < IXGB_EEPROM_SIZE ; i++) { |
222441a6 | 476 | u16 ee_data; |
1da177e4 LT |
477 | ee_data = ixgb_read_eeprom(hw, i); |
478 | checksum += ee_data; | |
c676504e | 479 | hw->eeprom[i] = cpu_to_le16(ee_data); |
1da177e4 LT |
480 | } |
481 | ||
222441a6 | 482 | if (checksum != (u16) EEPROM_SUM) { |
1da177e4 LT |
483 | DEBUGOUT("ixgb_ee: Checksum invalid.\n"); |
484 | /* clear the init_ctrl_reg_1 to signify that the cache is | |
485 | * invalidated */ | |
c676504e | 486 | ee_map->init_ctrl_reg_1 = cpu_to_le16(EEPROM_ICW1_SIGNATURE_CLEAR); |
446490ca | 487 | return (false); |
1da177e4 LT |
488 | } |
489 | ||
c676504e AV |
490 | if ((ee_map->init_ctrl_reg_1 & cpu_to_le16(EEPROM_ICW1_SIGNATURE_MASK)) |
491 | != cpu_to_le16(EEPROM_ICW1_SIGNATURE_VALID)) { | |
1da177e4 | 492 | DEBUGOUT("ixgb_ee: Signature invalid.\n"); |
446490ca | 493 | return(false); |
1da177e4 LT |
494 | } |
495 | ||
446490ca | 496 | return(true); |
1da177e4 LT |
497 | } |
498 | ||
499 | /****************************************************************************** | |
500 | * Local function to check if the eeprom signature is good | |
501 | * If the eeprom signature is good, calls ixgb)get_eeprom_data. | |
502 | * | |
503 | * hw - Struct containing variables accessed by shared code | |
504 | * | |
505 | * Returns: | |
446490ca JP |
506 | * true: eeprom signature was good and the eeprom read was successful |
507 | * false: otherwise. | |
1da177e4 | 508 | ******************************************************************************/ |
446490ca | 509 | static bool |
1da177e4 LT |
510 | ixgb_check_and_get_eeprom_data (struct ixgb_hw* hw) |
511 | { | |
512 | struct ixgb_ee_map_type *ee_map = (struct ixgb_ee_map_type *)hw->eeprom; | |
513 | ||
c676504e AV |
514 | if ((ee_map->init_ctrl_reg_1 & cpu_to_le16(EEPROM_ICW1_SIGNATURE_MASK)) |
515 | == cpu_to_le16(EEPROM_ICW1_SIGNATURE_VALID)) { | |
446490ca | 516 | return (true); |
1da177e4 LT |
517 | } else { |
518 | return ixgb_get_eeprom_data(hw); | |
519 | } | |
520 | } | |
521 | ||
522 | /****************************************************************************** | |
523 | * return a word from the eeprom | |
524 | * | |
525 | * hw - Struct containing variables accessed by shared code | |
526 | * index - Offset of eeprom word | |
527 | * | |
528 | * Returns: | |
529 | * Word at indexed offset in eeprom, if valid, 0 otherwise. | |
530 | ******************************************************************************/ | |
c676504e | 531 | __le16 |
222441a6 | 532 | ixgb_get_eeprom_word(struct ixgb_hw *hw, u16 index) |
1da177e4 LT |
533 | { |
534 | ||
535 | if ((index < IXGB_EEPROM_SIZE) && | |
446490ca | 536 | (ixgb_check_and_get_eeprom_data(hw) == true)) { |
1da177e4 LT |
537 | return(hw->eeprom[index]); |
538 | } | |
539 | ||
540 | return(0); | |
541 | } | |
542 | ||
543 | /****************************************************************************** | |
544 | * return the mac address from EEPROM | |
545 | * | |
546 | * hw - Struct containing variables accessed by shared code | |
547 | * mac_addr - Ethernet Address if EEPROM contents are valid, 0 otherwise | |
548 | * | |
549 | * Returns: None. | |
550 | ******************************************************************************/ | |
551 | void | |
552 | ixgb_get_ee_mac_addr(struct ixgb_hw *hw, | |
222441a6 | 553 | u8 *mac_addr) |
1da177e4 LT |
554 | { |
555 | int i; | |
556 | struct ixgb_ee_map_type *ee_map = (struct ixgb_ee_map_type *)hw->eeprom; | |
557 | ||
558 | DEBUGFUNC("ixgb_get_ee_mac_addr"); | |
559 | ||
446490ca | 560 | if (ixgb_check_and_get_eeprom_data(hw) == true) { |
1da177e4 LT |
561 | for (i = 0; i < IXGB_ETH_LENGTH_OF_ADDRESS; i++) { |
562 | mac_addr[i] = ee_map->mac_addr[i]; | |
563 | DEBUGOUT2("mac(%d) = %.2X\n", i, mac_addr[i]); | |
564 | } | |
565 | } | |
566 | } | |
567 | ||
1da177e4 LT |
568 | |
569 | /****************************************************************************** | |
570 | * return the Printed Board Assembly number from EEPROM | |
571 | * | |
572 | * hw - Struct containing variables accessed by shared code | |
573 | * | |
574 | * Returns: | |
575 | * PBA number if EEPROM contents are valid, 0 otherwise | |
576 | ******************************************************************************/ | |
222441a6 | 577 | u32 |
1da177e4 LT |
578 | ixgb_get_ee_pba_number(struct ixgb_hw *hw) |
579 | { | |
446490ca | 580 | if (ixgb_check_and_get_eeprom_data(hw) == true) |
1da177e4 LT |
581 | return (le16_to_cpu(hw->eeprom[EEPROM_PBA_1_2_REG]) |
582 | | (le16_to_cpu(hw->eeprom[EEPROM_PBA_3_4_REG])<<16)); | |
583 | ||
584 | return(0); | |
585 | } | |
586 | ||
1da177e4 LT |
587 | |
588 | /****************************************************************************** | |
589 | * return the Device Id from EEPROM | |
590 | * | |
591 | * hw - Struct containing variables accessed by shared code | |
592 | * | |
593 | * Returns: | |
594 | * Device Id if EEPROM contents are valid, 0 otherwise | |
595 | ******************************************************************************/ | |
222441a6 | 596 | u16 |
1da177e4 LT |
597 | ixgb_get_ee_device_id(struct ixgb_hw *hw) |
598 | { | |
599 | struct ixgb_ee_map_type *ee_map = (struct ixgb_ee_map_type *)hw->eeprom; | |
600 | ||
446490ca | 601 | if (ixgb_check_and_get_eeprom_data(hw) == true) |
abf481d6 | 602 | return (le16_to_cpu(ee_map->device_id)); |
1da177e4 | 603 | |
fcb01756 | 604 | return (0); |
1da177e4 LT |
605 | } |
606 |