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9d5c8243 AK |
1 | /******************************************************************************* |
2 | ||
3 | Intel(R) Gigabit Ethernet Linux driver | |
652fff32 | 4 | Copyright(c) 2007 - 2008 Intel Corporation. |
9d5c8243 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: | |
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 | /* e1000_82575 | |
29 | * e1000_82576 | |
30 | */ | |
31 | ||
32 | #include <linux/types.h> | |
33 | #include <linux/slab.h> | |
2d064c06 | 34 | #include <linux/if_ether.h> |
9d5c8243 AK |
35 | |
36 | #include "e1000_mac.h" | |
37 | #include "e1000_82575.h" | |
38 | ||
39 | static s32 igb_get_invariants_82575(struct e1000_hw *); | |
40 | static s32 igb_acquire_phy_82575(struct e1000_hw *); | |
41 | static void igb_release_phy_82575(struct e1000_hw *); | |
42 | static s32 igb_acquire_nvm_82575(struct e1000_hw *); | |
43 | static void igb_release_nvm_82575(struct e1000_hw *); | |
44 | static s32 igb_check_for_link_82575(struct e1000_hw *); | |
45 | static s32 igb_get_cfg_done_82575(struct e1000_hw *); | |
46 | static s32 igb_init_hw_82575(struct e1000_hw *); | |
47 | static s32 igb_phy_hw_reset_sgmii_82575(struct e1000_hw *); | |
48 | static s32 igb_read_phy_reg_sgmii_82575(struct e1000_hw *, u32, u16 *); | |
9d5c8243 AK |
49 | static s32 igb_reset_hw_82575(struct e1000_hw *); |
50 | static s32 igb_set_d0_lplu_state_82575(struct e1000_hw *, bool); | |
51 | static s32 igb_setup_copper_link_82575(struct e1000_hw *); | |
52 | static s32 igb_setup_fiber_serdes_link_82575(struct e1000_hw *); | |
53 | static s32 igb_write_phy_reg_sgmii_82575(struct e1000_hw *, u32, u16); | |
54 | static void igb_clear_hw_cntrs_82575(struct e1000_hw *); | |
55 | static s32 igb_acquire_swfw_sync_82575(struct e1000_hw *, u16); | |
56 | static s32 igb_configure_pcs_link_82575(struct e1000_hw *); | |
57 | static s32 igb_get_pcs_speed_and_duplex_82575(struct e1000_hw *, u16 *, | |
58 | u16 *); | |
59 | static s32 igb_get_phy_id_82575(struct e1000_hw *); | |
60 | static void igb_release_swfw_sync_82575(struct e1000_hw *, u16); | |
61 | static bool igb_sgmii_active_82575(struct e1000_hw *); | |
62 | static s32 igb_reset_init_script_82575(struct e1000_hw *); | |
63 | static s32 igb_read_mac_addr_82575(struct e1000_hw *); | |
64 | ||
9d5c8243 AK |
65 | static s32 igb_get_invariants_82575(struct e1000_hw *hw) |
66 | { | |
67 | struct e1000_phy_info *phy = &hw->phy; | |
68 | struct e1000_nvm_info *nvm = &hw->nvm; | |
69 | struct e1000_mac_info *mac = &hw->mac; | |
c1889bfe | 70 | struct e1000_dev_spec_82575 * dev_spec = &hw->dev_spec._82575; |
9d5c8243 AK |
71 | u32 eecd; |
72 | s32 ret_val; | |
73 | u16 size; | |
74 | u32 ctrl_ext = 0; | |
75 | ||
76 | switch (hw->device_id) { | |
77 | case E1000_DEV_ID_82575EB_COPPER: | |
78 | case E1000_DEV_ID_82575EB_FIBER_SERDES: | |
79 | case E1000_DEV_ID_82575GB_QUAD_COPPER: | |
80 | mac->type = e1000_82575; | |
81 | break; | |
2d064c06 AD |
82 | case E1000_DEV_ID_82576: |
83 | case E1000_DEV_ID_82576_FIBER: | |
84 | case E1000_DEV_ID_82576_SERDES: | |
2d064c06 AD |
85 | mac->type = e1000_82576; |
86 | break; | |
9d5c8243 AK |
87 | default: |
88 | return -E1000_ERR_MAC_INIT; | |
89 | break; | |
90 | } | |
91 | ||
9d5c8243 AK |
92 | /* Set media type */ |
93 | /* | |
94 | * The 82575 uses bits 22:23 for link mode. The mode can be changed | |
95 | * based on the EEPROM. We cannot rely upon device ID. There | |
96 | * is no distinguishable difference between fiber and internal | |
97 | * SerDes mode on the 82575. There can be an external PHY attached | |
98 | * on the SGMII interface. For this, we'll set sgmii_active to true. | |
99 | */ | |
100 | phy->media_type = e1000_media_type_copper; | |
101 | dev_spec->sgmii_active = false; | |
102 | ||
103 | ctrl_ext = rd32(E1000_CTRL_EXT); | |
104 | if ((ctrl_ext & E1000_CTRL_EXT_LINK_MODE_MASK) == | |
105 | E1000_CTRL_EXT_LINK_MODE_PCIE_SERDES) { | |
106 | hw->phy.media_type = e1000_media_type_internal_serdes; | |
107 | ctrl_ext |= E1000_CTRL_I2C_ENA; | |
108 | } else if (ctrl_ext & E1000_CTRL_EXT_LINK_MODE_SGMII) { | |
109 | dev_spec->sgmii_active = true; | |
110 | ctrl_ext |= E1000_CTRL_I2C_ENA; | |
111 | } else { | |
112 | ctrl_ext &= ~E1000_CTRL_I2C_ENA; | |
113 | } | |
114 | wr32(E1000_CTRL_EXT, ctrl_ext); | |
115 | ||
116 | /* Set mta register count */ | |
117 | mac->mta_reg_count = 128; | |
118 | /* Set rar entry count */ | |
119 | mac->rar_entry_count = E1000_RAR_ENTRIES_82575; | |
2d064c06 AD |
120 | if (mac->type == e1000_82576) |
121 | mac->rar_entry_count = E1000_RAR_ENTRIES_82576; | |
9d5c8243 AK |
122 | /* Set if part includes ASF firmware */ |
123 | mac->asf_firmware_present = true; | |
124 | /* Set if manageability features are enabled. */ | |
125 | mac->arc_subsystem_valid = | |
126 | (rd32(E1000_FWSM) & E1000_FWSM_MODE_MASK) | |
127 | ? true : false; | |
128 | ||
129 | /* physical interface link setup */ | |
130 | mac->ops.setup_physical_interface = | |
131 | (hw->phy.media_type == e1000_media_type_copper) | |
132 | ? igb_setup_copper_link_82575 | |
133 | : igb_setup_fiber_serdes_link_82575; | |
134 | ||
135 | /* NVM initialization */ | |
136 | eecd = rd32(E1000_EECD); | |
137 | ||
138 | nvm->opcode_bits = 8; | |
139 | nvm->delay_usec = 1; | |
140 | switch (nvm->override) { | |
141 | case e1000_nvm_override_spi_large: | |
142 | nvm->page_size = 32; | |
143 | nvm->address_bits = 16; | |
144 | break; | |
145 | case e1000_nvm_override_spi_small: | |
146 | nvm->page_size = 8; | |
147 | nvm->address_bits = 8; | |
148 | break; | |
149 | default: | |
150 | nvm->page_size = eecd & E1000_EECD_ADDR_BITS ? 32 : 8; | |
151 | nvm->address_bits = eecd & E1000_EECD_ADDR_BITS ? 16 : 8; | |
152 | break; | |
153 | } | |
154 | ||
155 | nvm->type = e1000_nvm_eeprom_spi; | |
156 | ||
157 | size = (u16)((eecd & E1000_EECD_SIZE_EX_MASK) >> | |
158 | E1000_EECD_SIZE_EX_SHIFT); | |
159 | ||
160 | /* | |
161 | * Added to a constant, "size" becomes the left-shift value | |
162 | * for setting word_size. | |
163 | */ | |
164 | size += NVM_WORD_SIZE_BASE_SHIFT; | |
5c3cad75 JK |
165 | |
166 | /* EEPROM access above 16k is unsupported */ | |
167 | if (size > 14) | |
168 | size = 14; | |
9d5c8243 AK |
169 | nvm->word_size = 1 << size; |
170 | ||
171 | /* setup PHY parameters */ | |
172 | if (phy->media_type != e1000_media_type_copper) { | |
173 | phy->type = e1000_phy_none; | |
174 | return 0; | |
175 | } | |
176 | ||
177 | phy->autoneg_mask = AUTONEG_ADVERTISE_SPEED_DEFAULT; | |
178 | phy->reset_delay_us = 100; | |
179 | ||
180 | /* PHY function pointers */ | |
181 | if (igb_sgmii_active_82575(hw)) { | |
182 | phy->ops.reset_phy = igb_phy_hw_reset_sgmii_82575; | |
183 | phy->ops.read_phy_reg = igb_read_phy_reg_sgmii_82575; | |
184 | phy->ops.write_phy_reg = igb_write_phy_reg_sgmii_82575; | |
185 | } else { | |
186 | phy->ops.reset_phy = igb_phy_hw_reset; | |
187 | phy->ops.read_phy_reg = igb_read_phy_reg_igp; | |
188 | phy->ops.write_phy_reg = igb_write_phy_reg_igp; | |
189 | } | |
190 | ||
191 | /* Set phy->phy_addr and phy->id. */ | |
192 | ret_val = igb_get_phy_id_82575(hw); | |
193 | if (ret_val) | |
194 | return ret_val; | |
195 | ||
196 | /* Verify phy id and set remaining function pointers */ | |
197 | switch (phy->id) { | |
198 | case M88E1111_I_PHY_ID: | |
199 | phy->type = e1000_phy_m88; | |
200 | phy->ops.get_phy_info = igb_get_phy_info_m88; | |
201 | phy->ops.get_cable_length = igb_get_cable_length_m88; | |
202 | phy->ops.force_speed_duplex = igb_phy_force_speed_duplex_m88; | |
203 | break; | |
204 | case IGP03E1000_E_PHY_ID: | |
205 | phy->type = e1000_phy_igp_3; | |
206 | phy->ops.get_phy_info = igb_get_phy_info_igp; | |
207 | phy->ops.get_cable_length = igb_get_cable_length_igp_2; | |
208 | phy->ops.force_speed_duplex = igb_phy_force_speed_duplex_igp; | |
209 | phy->ops.set_d0_lplu_state = igb_set_d0_lplu_state_82575; | |
210 | phy->ops.set_d3_lplu_state = igb_set_d3_lplu_state; | |
211 | break; | |
212 | default: | |
213 | return -E1000_ERR_PHY; | |
214 | } | |
215 | ||
216 | return 0; | |
217 | } | |
218 | ||
219 | /** | |
733596be | 220 | * igb_acquire_phy_82575 - Acquire rights to access PHY |
9d5c8243 AK |
221 | * @hw: pointer to the HW structure |
222 | * | |
223 | * Acquire access rights to the correct PHY. This is a | |
224 | * function pointer entry point called by the api module. | |
225 | **/ | |
226 | static s32 igb_acquire_phy_82575(struct e1000_hw *hw) | |
227 | { | |
228 | u16 mask; | |
229 | ||
230 | mask = hw->bus.func ? E1000_SWFW_PHY1_SM : E1000_SWFW_PHY0_SM; | |
231 | ||
232 | return igb_acquire_swfw_sync_82575(hw, mask); | |
233 | } | |
234 | ||
235 | /** | |
733596be | 236 | * igb_release_phy_82575 - Release rights to access PHY |
9d5c8243 AK |
237 | * @hw: pointer to the HW structure |
238 | * | |
239 | * A wrapper to release access rights to the correct PHY. This is a | |
240 | * function pointer entry point called by the api module. | |
241 | **/ | |
242 | static void igb_release_phy_82575(struct e1000_hw *hw) | |
243 | { | |
244 | u16 mask; | |
245 | ||
246 | mask = hw->bus.func ? E1000_SWFW_PHY1_SM : E1000_SWFW_PHY0_SM; | |
247 | igb_release_swfw_sync_82575(hw, mask); | |
248 | } | |
249 | ||
250 | /** | |
733596be | 251 | * igb_read_phy_reg_sgmii_82575 - Read PHY register using sgmii |
9d5c8243 AK |
252 | * @hw: pointer to the HW structure |
253 | * @offset: register offset to be read | |
254 | * @data: pointer to the read data | |
255 | * | |
256 | * Reads the PHY register at offset using the serial gigabit media independent | |
257 | * interface and stores the retrieved information in data. | |
258 | **/ | |
259 | static s32 igb_read_phy_reg_sgmii_82575(struct e1000_hw *hw, u32 offset, | |
260 | u16 *data) | |
261 | { | |
262 | struct e1000_phy_info *phy = &hw->phy; | |
263 | u32 i, i2ccmd = 0; | |
264 | ||
265 | if (offset > E1000_MAX_SGMII_PHY_REG_ADDR) { | |
652fff32 | 266 | hw_dbg("PHY Address %u is out of range\n", offset); |
9d5c8243 AK |
267 | return -E1000_ERR_PARAM; |
268 | } | |
269 | ||
270 | /* | |
271 | * Set up Op-code, Phy Address, and register address in the I2CCMD | |
272 | * register. The MAC will take care of interfacing with the | |
273 | * PHY to retrieve the desired data. | |
274 | */ | |
275 | i2ccmd = ((offset << E1000_I2CCMD_REG_ADDR_SHIFT) | | |
276 | (phy->addr << E1000_I2CCMD_PHY_ADDR_SHIFT) | | |
277 | (E1000_I2CCMD_OPCODE_READ)); | |
278 | ||
279 | wr32(E1000_I2CCMD, i2ccmd); | |
280 | ||
281 | /* Poll the ready bit to see if the I2C read completed */ | |
282 | for (i = 0; i < E1000_I2CCMD_PHY_TIMEOUT; i++) { | |
283 | udelay(50); | |
284 | i2ccmd = rd32(E1000_I2CCMD); | |
285 | if (i2ccmd & E1000_I2CCMD_READY) | |
286 | break; | |
287 | } | |
288 | if (!(i2ccmd & E1000_I2CCMD_READY)) { | |
652fff32 | 289 | hw_dbg("I2CCMD Read did not complete\n"); |
9d5c8243 AK |
290 | return -E1000_ERR_PHY; |
291 | } | |
292 | if (i2ccmd & E1000_I2CCMD_ERROR) { | |
652fff32 | 293 | hw_dbg("I2CCMD Error bit set\n"); |
9d5c8243 AK |
294 | return -E1000_ERR_PHY; |
295 | } | |
296 | ||
297 | /* Need to byte-swap the 16-bit value. */ | |
298 | *data = ((i2ccmd >> 8) & 0x00FF) | ((i2ccmd << 8) & 0xFF00); | |
299 | ||
300 | return 0; | |
301 | } | |
302 | ||
303 | /** | |
733596be | 304 | * igb_write_phy_reg_sgmii_82575 - Write PHY register using sgmii |
9d5c8243 AK |
305 | * @hw: pointer to the HW structure |
306 | * @offset: register offset to write to | |
307 | * @data: data to write at register offset | |
308 | * | |
309 | * Writes the data to PHY register at the offset using the serial gigabit | |
310 | * media independent interface. | |
311 | **/ | |
312 | static s32 igb_write_phy_reg_sgmii_82575(struct e1000_hw *hw, u32 offset, | |
313 | u16 data) | |
314 | { | |
315 | struct e1000_phy_info *phy = &hw->phy; | |
316 | u32 i, i2ccmd = 0; | |
317 | u16 phy_data_swapped; | |
318 | ||
319 | if (offset > E1000_MAX_SGMII_PHY_REG_ADDR) { | |
652fff32 | 320 | hw_dbg("PHY Address %d is out of range\n", offset); |
9d5c8243 AK |
321 | return -E1000_ERR_PARAM; |
322 | } | |
323 | ||
324 | /* Swap the data bytes for the I2C interface */ | |
325 | phy_data_swapped = ((data >> 8) & 0x00FF) | ((data << 8) & 0xFF00); | |
326 | ||
327 | /* | |
328 | * Set up Op-code, Phy Address, and register address in the I2CCMD | |
329 | * register. The MAC will take care of interfacing with the | |
330 | * PHY to retrieve the desired data. | |
331 | */ | |
332 | i2ccmd = ((offset << E1000_I2CCMD_REG_ADDR_SHIFT) | | |
333 | (phy->addr << E1000_I2CCMD_PHY_ADDR_SHIFT) | | |
334 | E1000_I2CCMD_OPCODE_WRITE | | |
335 | phy_data_swapped); | |
336 | ||
337 | wr32(E1000_I2CCMD, i2ccmd); | |
338 | ||
339 | /* Poll the ready bit to see if the I2C read completed */ | |
340 | for (i = 0; i < E1000_I2CCMD_PHY_TIMEOUT; i++) { | |
341 | udelay(50); | |
342 | i2ccmd = rd32(E1000_I2CCMD); | |
343 | if (i2ccmd & E1000_I2CCMD_READY) | |
344 | break; | |
345 | } | |
346 | if (!(i2ccmd & E1000_I2CCMD_READY)) { | |
652fff32 | 347 | hw_dbg("I2CCMD Write did not complete\n"); |
9d5c8243 AK |
348 | return -E1000_ERR_PHY; |
349 | } | |
350 | if (i2ccmd & E1000_I2CCMD_ERROR) { | |
652fff32 | 351 | hw_dbg("I2CCMD Error bit set\n"); |
9d5c8243 AK |
352 | return -E1000_ERR_PHY; |
353 | } | |
354 | ||
355 | return 0; | |
356 | } | |
357 | ||
358 | /** | |
733596be | 359 | * igb_get_phy_id_82575 - Retrieve PHY addr and id |
9d5c8243 AK |
360 | * @hw: pointer to the HW structure |
361 | * | |
652fff32 | 362 | * Retrieves the PHY address and ID for both PHY's which do and do not use |
9d5c8243 AK |
363 | * sgmi interface. |
364 | **/ | |
365 | static s32 igb_get_phy_id_82575(struct e1000_hw *hw) | |
366 | { | |
367 | struct e1000_phy_info *phy = &hw->phy; | |
368 | s32 ret_val = 0; | |
369 | u16 phy_id; | |
370 | ||
371 | /* | |
372 | * For SGMII PHYs, we try the list of possible addresses until | |
373 | * we find one that works. For non-SGMII PHYs | |
374 | * (e.g. integrated copper PHYs), an address of 1 should | |
375 | * work. The result of this function should mean phy->phy_addr | |
376 | * and phy->id are set correctly. | |
377 | */ | |
378 | if (!(igb_sgmii_active_82575(hw))) { | |
379 | phy->addr = 1; | |
380 | ret_val = igb_get_phy_id(hw); | |
381 | goto out; | |
382 | } | |
383 | ||
384 | /* | |
385 | * The address field in the I2CCMD register is 3 bits and 0 is invalid. | |
386 | * Therefore, we need to test 1-7 | |
387 | */ | |
388 | for (phy->addr = 1; phy->addr < 8; phy->addr++) { | |
389 | ret_val = igb_read_phy_reg_sgmii_82575(hw, PHY_ID1, &phy_id); | |
390 | if (ret_val == 0) { | |
652fff32 AK |
391 | hw_dbg("Vendor ID 0x%08X read at address %u\n", |
392 | phy_id, phy->addr); | |
9d5c8243 AK |
393 | /* |
394 | * At the time of this writing, The M88 part is | |
395 | * the only supported SGMII PHY product. | |
396 | */ | |
397 | if (phy_id == M88_VENDOR) | |
398 | break; | |
399 | } else { | |
652fff32 | 400 | hw_dbg("PHY address %u was unreadable\n", phy->addr); |
9d5c8243 AK |
401 | } |
402 | } | |
403 | ||
404 | /* A valid PHY type couldn't be found. */ | |
405 | if (phy->addr == 8) { | |
406 | phy->addr = 0; | |
407 | ret_val = -E1000_ERR_PHY; | |
408 | goto out; | |
409 | } | |
410 | ||
411 | ret_val = igb_get_phy_id(hw); | |
412 | ||
413 | out: | |
414 | return ret_val; | |
415 | } | |
416 | ||
417 | /** | |
733596be | 418 | * igb_phy_hw_reset_sgmii_82575 - Performs a PHY reset |
9d5c8243 AK |
419 | * @hw: pointer to the HW structure |
420 | * | |
421 | * Resets the PHY using the serial gigabit media independent interface. | |
422 | **/ | |
423 | static s32 igb_phy_hw_reset_sgmii_82575(struct e1000_hw *hw) | |
424 | { | |
425 | s32 ret_val; | |
426 | ||
427 | /* | |
428 | * This isn't a true "hard" reset, but is the only reset | |
429 | * available to us at this time. | |
430 | */ | |
431 | ||
652fff32 | 432 | hw_dbg("Soft resetting SGMII attached PHY...\n"); |
9d5c8243 AK |
433 | |
434 | /* | |
435 | * SFP documentation requires the following to configure the SPF module | |
436 | * to work on SGMII. No further documentation is given. | |
437 | */ | |
438 | ret_val = hw->phy.ops.write_phy_reg(hw, 0x1B, 0x8084); | |
439 | if (ret_val) | |
440 | goto out; | |
441 | ||
442 | ret_val = igb_phy_sw_reset(hw); | |
443 | ||
444 | out: | |
445 | return ret_val; | |
446 | } | |
447 | ||
448 | /** | |
733596be | 449 | * igb_set_d0_lplu_state_82575 - Set Low Power Linkup D0 state |
9d5c8243 AK |
450 | * @hw: pointer to the HW structure |
451 | * @active: true to enable LPLU, false to disable | |
452 | * | |
453 | * Sets the LPLU D0 state according to the active flag. When | |
454 | * activating LPLU this function also disables smart speed | |
455 | * and vice versa. LPLU will not be activated unless the | |
456 | * device autonegotiation advertisement meets standards of | |
457 | * either 10 or 10/100 or 10/100/1000 at all duplexes. | |
458 | * This is a function pointer entry point only called by | |
459 | * PHY setup routines. | |
460 | **/ | |
461 | static s32 igb_set_d0_lplu_state_82575(struct e1000_hw *hw, bool active) | |
462 | { | |
463 | struct e1000_phy_info *phy = &hw->phy; | |
464 | s32 ret_val; | |
465 | u16 data; | |
466 | ||
652fff32 | 467 | ret_val = phy->ops.read_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT, &data); |
9d5c8243 AK |
468 | if (ret_val) |
469 | goto out; | |
470 | ||
471 | if (active) { | |
472 | data |= IGP02E1000_PM_D0_LPLU; | |
652fff32 AK |
473 | ret_val = phy->ops.write_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT, |
474 | data); | |
9d5c8243 AK |
475 | if (ret_val) |
476 | goto out; | |
477 | ||
478 | /* When LPLU is enabled, we should disable SmartSpeed */ | |
652fff32 AK |
479 | ret_val = phy->ops.read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, |
480 | &data); | |
9d5c8243 | 481 | data &= ~IGP01E1000_PSCFR_SMART_SPEED; |
652fff32 AK |
482 | ret_val = phy->ops.write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, |
483 | data); | |
9d5c8243 AK |
484 | if (ret_val) |
485 | goto out; | |
486 | } else { | |
487 | data &= ~IGP02E1000_PM_D0_LPLU; | |
652fff32 AK |
488 | ret_val = phy->ops.write_phy_reg(hw, IGP02E1000_PHY_POWER_MGMT, |
489 | data); | |
9d5c8243 AK |
490 | /* |
491 | * LPLU and SmartSpeed are mutually exclusive. LPLU is used | |
492 | * during Dx states where the power conservation is most | |
493 | * important. During driver activity we should enable | |
494 | * SmartSpeed, so performance is maintained. | |
495 | */ | |
496 | if (phy->smart_speed == e1000_smart_speed_on) { | |
652fff32 AK |
497 | ret_val = phy->ops.read_phy_reg(hw, |
498 | IGP01E1000_PHY_PORT_CONFIG, &data); | |
9d5c8243 AK |
499 | if (ret_val) |
500 | goto out; | |
501 | ||
502 | data |= IGP01E1000_PSCFR_SMART_SPEED; | |
652fff32 AK |
503 | ret_val = phy->ops.write_phy_reg(hw, |
504 | IGP01E1000_PHY_PORT_CONFIG, data); | |
9d5c8243 AK |
505 | if (ret_val) |
506 | goto out; | |
507 | } else if (phy->smart_speed == e1000_smart_speed_off) { | |
652fff32 AK |
508 | ret_val = phy->ops.read_phy_reg(hw, |
509 | IGP01E1000_PHY_PORT_CONFIG, &data); | |
9d5c8243 AK |
510 | if (ret_val) |
511 | goto out; | |
512 | ||
513 | data &= ~IGP01E1000_PSCFR_SMART_SPEED; | |
652fff32 AK |
514 | ret_val = phy->ops.write_phy_reg(hw, |
515 | IGP01E1000_PHY_PORT_CONFIG, data); | |
9d5c8243 AK |
516 | if (ret_val) |
517 | goto out; | |
518 | } | |
519 | } | |
520 | ||
521 | out: | |
522 | return ret_val; | |
523 | } | |
524 | ||
525 | /** | |
733596be | 526 | * igb_acquire_nvm_82575 - Request for access to EEPROM |
9d5c8243 AK |
527 | * @hw: pointer to the HW structure |
528 | * | |
652fff32 | 529 | * Acquire the necessary semaphores for exclusive access to the EEPROM. |
9d5c8243 AK |
530 | * Set the EEPROM access request bit and wait for EEPROM access grant bit. |
531 | * Return successful if access grant bit set, else clear the request for | |
532 | * EEPROM access and return -E1000_ERR_NVM (-1). | |
533 | **/ | |
534 | static s32 igb_acquire_nvm_82575(struct e1000_hw *hw) | |
535 | { | |
536 | s32 ret_val; | |
537 | ||
538 | ret_val = igb_acquire_swfw_sync_82575(hw, E1000_SWFW_EEP_SM); | |
539 | if (ret_val) | |
540 | goto out; | |
541 | ||
542 | ret_val = igb_acquire_nvm(hw); | |
543 | ||
544 | if (ret_val) | |
545 | igb_release_swfw_sync_82575(hw, E1000_SWFW_EEP_SM); | |
546 | ||
547 | out: | |
548 | return ret_val; | |
549 | } | |
550 | ||
551 | /** | |
733596be | 552 | * igb_release_nvm_82575 - Release exclusive access to EEPROM |
9d5c8243 AK |
553 | * @hw: pointer to the HW structure |
554 | * | |
555 | * Stop any current commands to the EEPROM and clear the EEPROM request bit, | |
556 | * then release the semaphores acquired. | |
557 | **/ | |
558 | static void igb_release_nvm_82575(struct e1000_hw *hw) | |
559 | { | |
560 | igb_release_nvm(hw); | |
561 | igb_release_swfw_sync_82575(hw, E1000_SWFW_EEP_SM); | |
562 | } | |
563 | ||
564 | /** | |
733596be | 565 | * igb_acquire_swfw_sync_82575 - Acquire SW/FW semaphore |
9d5c8243 AK |
566 | * @hw: pointer to the HW structure |
567 | * @mask: specifies which semaphore to acquire | |
568 | * | |
569 | * Acquire the SW/FW semaphore to access the PHY or NVM. The mask | |
570 | * will also specify which port we're acquiring the lock for. | |
571 | **/ | |
572 | static s32 igb_acquire_swfw_sync_82575(struct e1000_hw *hw, u16 mask) | |
573 | { | |
574 | u32 swfw_sync; | |
575 | u32 swmask = mask; | |
576 | u32 fwmask = mask << 16; | |
577 | s32 ret_val = 0; | |
578 | s32 i = 0, timeout = 200; /* FIXME: find real value to use here */ | |
579 | ||
580 | while (i < timeout) { | |
581 | if (igb_get_hw_semaphore(hw)) { | |
582 | ret_val = -E1000_ERR_SWFW_SYNC; | |
583 | goto out; | |
584 | } | |
585 | ||
586 | swfw_sync = rd32(E1000_SW_FW_SYNC); | |
587 | if (!(swfw_sync & (fwmask | swmask))) | |
588 | break; | |
589 | ||
590 | /* | |
591 | * Firmware currently using resource (fwmask) | |
592 | * or other software thread using resource (swmask) | |
593 | */ | |
594 | igb_put_hw_semaphore(hw); | |
595 | mdelay(5); | |
596 | i++; | |
597 | } | |
598 | ||
599 | if (i == timeout) { | |
652fff32 | 600 | hw_dbg("Driver can't access resource, SW_FW_SYNC timeout.\n"); |
9d5c8243 AK |
601 | ret_val = -E1000_ERR_SWFW_SYNC; |
602 | goto out; | |
603 | } | |
604 | ||
605 | swfw_sync |= swmask; | |
606 | wr32(E1000_SW_FW_SYNC, swfw_sync); | |
607 | ||
608 | igb_put_hw_semaphore(hw); | |
609 | ||
610 | out: | |
611 | return ret_val; | |
612 | } | |
613 | ||
614 | /** | |
733596be | 615 | * igb_release_swfw_sync_82575 - Release SW/FW semaphore |
9d5c8243 AK |
616 | * @hw: pointer to the HW structure |
617 | * @mask: specifies which semaphore to acquire | |
618 | * | |
619 | * Release the SW/FW semaphore used to access the PHY or NVM. The mask | |
620 | * will also specify which port we're releasing the lock for. | |
621 | **/ | |
622 | static void igb_release_swfw_sync_82575(struct e1000_hw *hw, u16 mask) | |
623 | { | |
624 | u32 swfw_sync; | |
625 | ||
626 | while (igb_get_hw_semaphore(hw) != 0); | |
627 | /* Empty */ | |
628 | ||
629 | swfw_sync = rd32(E1000_SW_FW_SYNC); | |
630 | swfw_sync &= ~mask; | |
631 | wr32(E1000_SW_FW_SYNC, swfw_sync); | |
632 | ||
633 | igb_put_hw_semaphore(hw); | |
634 | } | |
635 | ||
636 | /** | |
733596be | 637 | * igb_get_cfg_done_82575 - Read config done bit |
9d5c8243 AK |
638 | * @hw: pointer to the HW structure |
639 | * | |
640 | * Read the management control register for the config done bit for | |
641 | * completion status. NOTE: silicon which is EEPROM-less will fail trying | |
642 | * to read the config done bit, so an error is *ONLY* logged and returns | |
643 | * 0. If we were to return with error, EEPROM-less silicon | |
644 | * would not be able to be reset or change link. | |
645 | **/ | |
646 | static s32 igb_get_cfg_done_82575(struct e1000_hw *hw) | |
647 | { | |
648 | s32 timeout = PHY_CFG_TIMEOUT; | |
649 | s32 ret_val = 0; | |
650 | u32 mask = E1000_NVM_CFG_DONE_PORT_0; | |
651 | ||
652 | if (hw->bus.func == 1) | |
653 | mask = E1000_NVM_CFG_DONE_PORT_1; | |
654 | ||
655 | while (timeout) { | |
656 | if (rd32(E1000_EEMNGCTL) & mask) | |
657 | break; | |
658 | msleep(1); | |
659 | timeout--; | |
660 | } | |
661 | if (!timeout) | |
652fff32 | 662 | hw_dbg("MNG configuration cycle has not completed.\n"); |
9d5c8243 AK |
663 | |
664 | /* If EEPROM is not marked present, init the PHY manually */ | |
665 | if (((rd32(E1000_EECD) & E1000_EECD_PRES) == 0) && | |
666 | (hw->phy.type == e1000_phy_igp_3)) | |
667 | igb_phy_init_script_igp3(hw); | |
668 | ||
669 | return ret_val; | |
670 | } | |
671 | ||
672 | /** | |
733596be | 673 | * igb_check_for_link_82575 - Check for link |
9d5c8243 AK |
674 | * @hw: pointer to the HW structure |
675 | * | |
676 | * If sgmii is enabled, then use the pcs register to determine link, otherwise | |
677 | * use the generic interface for determining link. | |
678 | **/ | |
679 | static s32 igb_check_for_link_82575(struct e1000_hw *hw) | |
680 | { | |
681 | s32 ret_val; | |
682 | u16 speed, duplex; | |
683 | ||
684 | /* SGMII link check is done through the PCS register. */ | |
685 | if ((hw->phy.media_type != e1000_media_type_copper) || | |
5d0932a5 | 686 | (igb_sgmii_active_82575(hw))) { |
9d5c8243 | 687 | ret_val = igb_get_pcs_speed_and_duplex_82575(hw, &speed, |
2d064c06 | 688 | &duplex); |
5d0932a5 AD |
689 | /* |
690 | * Use this flag to determine if link needs to be checked or | |
691 | * not. If we have link clear the flag so that we do not | |
692 | * continue to check for link. | |
693 | */ | |
694 | hw->mac.get_link_status = !hw->mac.serdes_has_link; | |
695 | } else { | |
9d5c8243 | 696 | ret_val = igb_check_for_copper_link(hw); |
5d0932a5 | 697 | } |
9d5c8243 AK |
698 | |
699 | return ret_val; | |
700 | } | |
9d5c8243 | 701 | /** |
733596be | 702 | * igb_get_pcs_speed_and_duplex_82575 - Retrieve current speed/duplex |
9d5c8243 AK |
703 | * @hw: pointer to the HW structure |
704 | * @speed: stores the current speed | |
705 | * @duplex: stores the current duplex | |
706 | * | |
652fff32 | 707 | * Using the physical coding sub-layer (PCS), retrieve the current speed and |
9d5c8243 AK |
708 | * duplex, then store the values in the pointers provided. |
709 | **/ | |
710 | static s32 igb_get_pcs_speed_and_duplex_82575(struct e1000_hw *hw, u16 *speed, | |
711 | u16 *duplex) | |
712 | { | |
713 | struct e1000_mac_info *mac = &hw->mac; | |
714 | u32 pcs; | |
715 | ||
716 | /* Set up defaults for the return values of this function */ | |
717 | mac->serdes_has_link = false; | |
718 | *speed = 0; | |
719 | *duplex = 0; | |
720 | ||
721 | /* | |
722 | * Read the PCS Status register for link state. For non-copper mode, | |
723 | * the status register is not accurate. The PCS status register is | |
724 | * used instead. | |
725 | */ | |
726 | pcs = rd32(E1000_PCS_LSTAT); | |
727 | ||
728 | /* | |
729 | * The link up bit determines when link is up on autoneg. The sync ok | |
730 | * gets set once both sides sync up and agree upon link. Stable link | |
731 | * can be determined by checking for both link up and link sync ok | |
732 | */ | |
733 | if ((pcs & E1000_PCS_LSTS_LINK_OK) && (pcs & E1000_PCS_LSTS_SYNK_OK)) { | |
734 | mac->serdes_has_link = true; | |
735 | ||
736 | /* Detect and store PCS speed */ | |
737 | if (pcs & E1000_PCS_LSTS_SPEED_1000) { | |
738 | *speed = SPEED_1000; | |
739 | } else if (pcs & E1000_PCS_LSTS_SPEED_100) { | |
740 | *speed = SPEED_100; | |
741 | } else { | |
742 | *speed = SPEED_10; | |
743 | } | |
744 | ||
745 | /* Detect and store PCS duplex */ | |
746 | if (pcs & E1000_PCS_LSTS_DUPLEX_FULL) { | |
747 | *duplex = FULL_DUPLEX; | |
748 | } else { | |
749 | *duplex = HALF_DUPLEX; | |
750 | } | |
751 | } | |
752 | ||
753 | return 0; | |
754 | } | |
755 | ||
756 | /** | |
2d064c06 AD |
757 | * igb_init_rx_addrs_82575 - Initialize receive address's |
758 | * @hw: pointer to the HW structure | |
759 | * @rar_count: receive address registers | |
760 | * | |
761 | * Setups the receive address registers by setting the base receive address | |
762 | * register to the devices MAC address and clearing all the other receive | |
763 | * address registers to 0. | |
764 | **/ | |
765 | static void igb_init_rx_addrs_82575(struct e1000_hw *hw, u16 rar_count) | |
766 | { | |
767 | u32 i; | |
768 | u8 addr[6] = {0,0,0,0,0,0}; | |
769 | /* | |
770 | * This function is essentially the same as that of | |
771 | * e1000_init_rx_addrs_generic. However it also takes care | |
772 | * of the special case where the register offset of the | |
773 | * second set of RARs begins elsewhere. This is implicitly taken care by | |
774 | * function e1000_rar_set_generic. | |
775 | */ | |
776 | ||
777 | hw_dbg("e1000_init_rx_addrs_82575"); | |
778 | ||
779 | /* Setup the receive address */ | |
780 | hw_dbg("Programming MAC Address into RAR[0]\n"); | |
781 | hw->mac.ops.rar_set(hw, hw->mac.addr, 0); | |
782 | ||
783 | /* Zero out the other (rar_entry_count - 1) receive addresses */ | |
784 | hw_dbg("Clearing RAR[1-%u]\n", rar_count-1); | |
785 | for (i = 1; i < rar_count; i++) | |
786 | hw->mac.ops.rar_set(hw, addr, i); | |
787 | } | |
788 | ||
789 | /** | |
790 | * igb_update_mc_addr_list_82575 - Update Multicast addresses | |
791 | * @hw: pointer to the HW structure | |
792 | * @mc_addr_list: array of multicast addresses to program | |
793 | * @mc_addr_count: number of multicast addresses to program | |
794 | * @rar_used_count: the first RAR register free to program | |
795 | * @rar_count: total number of supported Receive Address Registers | |
796 | * | |
797 | * Updates the Receive Address Registers and Multicast Table Array. | |
798 | * The caller must have a packed mc_addr_list of multicast addresses. | |
799 | * The parameter rar_count will usually be hw->mac.rar_entry_count | |
800 | * unless there are workarounds that change this. | |
801 | **/ | |
802 | void igb_update_mc_addr_list_82575(struct e1000_hw *hw, | |
803 | u8 *mc_addr_list, u32 mc_addr_count, | |
804 | u32 rar_used_count, u32 rar_count) | |
805 | { | |
806 | u32 hash_value; | |
807 | u32 i; | |
808 | u8 addr[6] = {0,0,0,0,0,0}; | |
809 | /* | |
810 | * This function is essentially the same as that of | |
811 | * igb_update_mc_addr_list_generic. However it also takes care | |
812 | * of the special case where the register offset of the | |
813 | * second set of RARs begins elsewhere. This is implicitly taken care by | |
814 | * function e1000_rar_set_generic. | |
815 | */ | |
816 | ||
817 | /* | |
818 | * Load the first set of multicast addresses into the exact | |
819 | * filters (RAR). If there are not enough to fill the RAR | |
820 | * array, clear the filters. | |
821 | */ | |
822 | for (i = rar_used_count; i < rar_count; i++) { | |
823 | if (mc_addr_count) { | |
824 | igb_rar_set(hw, mc_addr_list, i); | |
825 | mc_addr_count--; | |
826 | mc_addr_list += ETH_ALEN; | |
827 | } else { | |
828 | igb_rar_set(hw, addr, i); | |
829 | } | |
830 | } | |
831 | ||
832 | /* Clear the old settings from the MTA */ | |
833 | hw_dbg("Clearing MTA\n"); | |
834 | for (i = 0; i < hw->mac.mta_reg_count; i++) { | |
835 | array_wr32(E1000_MTA, i, 0); | |
836 | wrfl(); | |
837 | } | |
838 | ||
839 | /* Load any remaining multicast addresses into the hash table. */ | |
840 | for (; mc_addr_count > 0; mc_addr_count--) { | |
841 | hash_value = igb_hash_mc_addr(hw, mc_addr_list); | |
842 | hw_dbg("Hash value = 0x%03X\n", hash_value); | |
549bdd84 | 843 | igb_mta_set(hw, hash_value); |
2d064c06 AD |
844 | mc_addr_list += ETH_ALEN; |
845 | } | |
846 | } | |
847 | ||
848 | /** | |
849 | * igb_shutdown_fiber_serdes_link_82575 - Remove link during power down | |
9d5c8243 | 850 | * @hw: pointer to the HW structure |
9d5c8243 | 851 | * |
2d064c06 AD |
852 | * In the case of fiber serdes, shut down optics and PCS on driver unload |
853 | * when management pass thru is not enabled. | |
9d5c8243 | 854 | **/ |
2d064c06 | 855 | void igb_shutdown_fiber_serdes_link_82575(struct e1000_hw *hw) |
9d5c8243 | 856 | { |
2d064c06 AD |
857 | u32 reg; |
858 | ||
859 | if (hw->mac.type != e1000_82576 || | |
860 | (hw->phy.media_type != e1000_media_type_fiber && | |
861 | hw->phy.media_type != e1000_media_type_internal_serdes)) | |
862 | return; | |
863 | ||
864 | /* if the management interface is not enabled, then power down */ | |
865 | if (!igb_enable_mng_pass_thru(hw)) { | |
866 | /* Disable PCS to turn off link */ | |
867 | reg = rd32(E1000_PCS_CFG0); | |
868 | reg &= ~E1000_PCS_CFG_PCS_EN; | |
869 | wr32(E1000_PCS_CFG0, reg); | |
870 | ||
871 | /* shutdown the laser */ | |
872 | reg = rd32(E1000_CTRL_EXT); | |
873 | reg |= E1000_CTRL_EXT_SDP7_DATA; | |
874 | wr32(E1000_CTRL_EXT, reg); | |
875 | ||
876 | /* flush the write to verify completion */ | |
877 | wrfl(); | |
878 | msleep(1); | |
879 | } | |
9d5c8243 AK |
880 | |
881 | return; | |
882 | } | |
883 | ||
884 | /** | |
733596be | 885 | * igb_reset_hw_82575 - Reset hardware |
9d5c8243 AK |
886 | * @hw: pointer to the HW structure |
887 | * | |
888 | * This resets the hardware into a known state. This is a | |
889 | * function pointer entry point called by the api module. | |
890 | **/ | |
891 | static s32 igb_reset_hw_82575(struct e1000_hw *hw) | |
892 | { | |
893 | u32 ctrl, icr; | |
894 | s32 ret_val; | |
895 | ||
896 | /* | |
897 | * Prevent the PCI-E bus from sticking if there is no TLP connection | |
898 | * on the last TLP read/write transaction when MAC is reset. | |
899 | */ | |
900 | ret_val = igb_disable_pcie_master(hw); | |
901 | if (ret_val) | |
652fff32 | 902 | hw_dbg("PCI-E Master disable polling has failed.\n"); |
9d5c8243 | 903 | |
652fff32 | 904 | hw_dbg("Masking off all interrupts\n"); |
9d5c8243 AK |
905 | wr32(E1000_IMC, 0xffffffff); |
906 | ||
907 | wr32(E1000_RCTL, 0); | |
908 | wr32(E1000_TCTL, E1000_TCTL_PSP); | |
909 | wrfl(); | |
910 | ||
911 | msleep(10); | |
912 | ||
913 | ctrl = rd32(E1000_CTRL); | |
914 | ||
652fff32 | 915 | hw_dbg("Issuing a global reset to MAC\n"); |
9d5c8243 AK |
916 | wr32(E1000_CTRL, ctrl | E1000_CTRL_RST); |
917 | ||
918 | ret_val = igb_get_auto_rd_done(hw); | |
919 | if (ret_val) { | |
920 | /* | |
921 | * When auto config read does not complete, do not | |
922 | * return with an error. This can happen in situations | |
923 | * where there is no eeprom and prevents getting link. | |
924 | */ | |
652fff32 | 925 | hw_dbg("Auto Read Done did not complete\n"); |
9d5c8243 AK |
926 | } |
927 | ||
928 | /* If EEPROM is not present, run manual init scripts */ | |
929 | if ((rd32(E1000_EECD) & E1000_EECD_PRES) == 0) | |
930 | igb_reset_init_script_82575(hw); | |
931 | ||
932 | /* Clear any pending interrupt events. */ | |
933 | wr32(E1000_IMC, 0xffffffff); | |
934 | icr = rd32(E1000_ICR); | |
935 | ||
936 | igb_check_alt_mac_addr(hw); | |
937 | ||
938 | return ret_val; | |
939 | } | |
940 | ||
941 | /** | |
733596be | 942 | * igb_init_hw_82575 - Initialize hardware |
9d5c8243 AK |
943 | * @hw: pointer to the HW structure |
944 | * | |
945 | * This inits the hardware readying it for operation. | |
946 | **/ | |
947 | static s32 igb_init_hw_82575(struct e1000_hw *hw) | |
948 | { | |
949 | struct e1000_mac_info *mac = &hw->mac; | |
950 | s32 ret_val; | |
951 | u16 i, rar_count = mac->rar_entry_count; | |
952 | ||
953 | /* Initialize identification LED */ | |
954 | ret_val = igb_id_led_init(hw); | |
955 | if (ret_val) { | |
652fff32 | 956 | hw_dbg("Error initializing identification LED\n"); |
9d5c8243 AK |
957 | /* This is not fatal and we should not stop init due to this */ |
958 | } | |
959 | ||
960 | /* Disabling VLAN filtering */ | |
652fff32 | 961 | hw_dbg("Initializing the IEEE VLAN\n"); |
9d5c8243 AK |
962 | igb_clear_vfta(hw); |
963 | ||
964 | /* Setup the receive address */ | |
2d064c06 | 965 | igb_init_rx_addrs_82575(hw, rar_count); |
9d5c8243 | 966 | /* Zero out the Multicast HASH table */ |
652fff32 | 967 | hw_dbg("Zeroing the MTA\n"); |
9d5c8243 AK |
968 | for (i = 0; i < mac->mta_reg_count; i++) |
969 | array_wr32(E1000_MTA, i, 0); | |
970 | ||
971 | /* Setup link and flow control */ | |
972 | ret_val = igb_setup_link(hw); | |
973 | ||
974 | /* | |
975 | * Clear all of the statistics registers (clear on read). It is | |
976 | * important that we do this after we have tried to establish link | |
977 | * because the symbol error count will increment wildly if there | |
978 | * is no link. | |
979 | */ | |
980 | igb_clear_hw_cntrs_82575(hw); | |
981 | ||
982 | return ret_val; | |
983 | } | |
984 | ||
985 | /** | |
733596be | 986 | * igb_setup_copper_link_82575 - Configure copper link settings |
9d5c8243 AK |
987 | * @hw: pointer to the HW structure |
988 | * | |
989 | * Configures the link for auto-neg or forced speed and duplex. Then we check | |
990 | * for link, once link is established calls to configure collision distance | |
991 | * and flow control are called. | |
992 | **/ | |
993 | static s32 igb_setup_copper_link_82575(struct e1000_hw *hw) | |
994 | { | |
995 | u32 ctrl, led_ctrl; | |
996 | s32 ret_val; | |
997 | bool link; | |
998 | ||
999 | ctrl = rd32(E1000_CTRL); | |
1000 | ctrl |= E1000_CTRL_SLU; | |
1001 | ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX); | |
1002 | wr32(E1000_CTRL, ctrl); | |
1003 | ||
1004 | switch (hw->phy.type) { | |
1005 | case e1000_phy_m88: | |
1006 | ret_val = igb_copper_link_setup_m88(hw); | |
1007 | break; | |
1008 | case e1000_phy_igp_3: | |
1009 | ret_val = igb_copper_link_setup_igp(hw); | |
1010 | /* Setup activity LED */ | |
1011 | led_ctrl = rd32(E1000_LEDCTL); | |
1012 | led_ctrl &= IGP_ACTIVITY_LED_MASK; | |
1013 | led_ctrl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE); | |
1014 | wr32(E1000_LEDCTL, led_ctrl); | |
1015 | break; | |
1016 | default: | |
1017 | ret_val = -E1000_ERR_PHY; | |
1018 | break; | |
1019 | } | |
1020 | ||
1021 | if (ret_val) | |
1022 | goto out; | |
1023 | ||
1024 | if (hw->mac.autoneg) { | |
1025 | /* | |
1026 | * Setup autoneg and flow control advertisement | |
1027 | * and perform autonegotiation. | |
1028 | */ | |
1029 | ret_val = igb_copper_link_autoneg(hw); | |
1030 | if (ret_val) | |
1031 | goto out; | |
1032 | } else { | |
1033 | /* | |
1034 | * PHY will be set to 10H, 10F, 100H or 100F | |
1035 | * depending on user settings. | |
1036 | */ | |
652fff32 | 1037 | hw_dbg("Forcing Speed and Duplex\n"); |
9d5c8243 AK |
1038 | ret_val = igb_phy_force_speed_duplex(hw); |
1039 | if (ret_val) { | |
652fff32 | 1040 | hw_dbg("Error Forcing Speed and Duplex\n"); |
9d5c8243 AK |
1041 | goto out; |
1042 | } | |
1043 | } | |
1044 | ||
1045 | ret_val = igb_configure_pcs_link_82575(hw); | |
1046 | if (ret_val) | |
1047 | goto out; | |
1048 | ||
1049 | /* | |
1050 | * Check link status. Wait up to 100 microseconds for link to become | |
1051 | * valid. | |
1052 | */ | |
652fff32 | 1053 | ret_val = igb_phy_has_link(hw, COPPER_LINK_UP_LIMIT, 10, &link); |
9d5c8243 AK |
1054 | if (ret_val) |
1055 | goto out; | |
1056 | ||
1057 | if (link) { | |
652fff32 | 1058 | hw_dbg("Valid link established!!!\n"); |
9d5c8243 AK |
1059 | /* Config the MAC and PHY after link is up */ |
1060 | igb_config_collision_dist(hw); | |
1061 | ret_val = igb_config_fc_after_link_up(hw); | |
1062 | } else { | |
652fff32 | 1063 | hw_dbg("Unable to establish link!!!\n"); |
9d5c8243 AK |
1064 | } |
1065 | ||
1066 | out: | |
1067 | return ret_val; | |
1068 | } | |
1069 | ||
1070 | /** | |
733596be | 1071 | * igb_setup_fiber_serdes_link_82575 - Setup link for fiber/serdes |
9d5c8243 AK |
1072 | * @hw: pointer to the HW structure |
1073 | * | |
1074 | * Configures speed and duplex for fiber and serdes links. | |
1075 | **/ | |
1076 | static s32 igb_setup_fiber_serdes_link_82575(struct e1000_hw *hw) | |
1077 | { | |
1078 | u32 reg; | |
1079 | ||
1080 | /* | |
1081 | * On the 82575, SerDes loopback mode persists until it is | |
1082 | * explicitly turned off or a power cycle is performed. A read to | |
1083 | * the register does not indicate its status. Therefore, we ensure | |
1084 | * loopback mode is disabled during initialization. | |
1085 | */ | |
1086 | wr32(E1000_SCTL, E1000_SCTL_DISABLE_SERDES_LOOPBACK); | |
1087 | ||
1088 | /* Force link up, set 1gb, set both sw defined pins */ | |
1089 | reg = rd32(E1000_CTRL); | |
1090 | reg |= E1000_CTRL_SLU | | |
1091 | E1000_CTRL_SPD_1000 | | |
1092 | E1000_CTRL_FRCSPD | | |
1093 | E1000_CTRL_SWDPIN0 | | |
1094 | E1000_CTRL_SWDPIN1; | |
1095 | wr32(E1000_CTRL, reg); | |
1096 | ||
921aa749 AD |
1097 | /* Power on phy for 82576 fiber adapters */ |
1098 | if (hw->mac.type == e1000_82576) { | |
1099 | reg = rd32(E1000_CTRL_EXT); | |
1100 | reg &= ~E1000_CTRL_EXT_SDP7_DATA; | |
1101 | wr32(E1000_CTRL_EXT, reg); | |
1102 | } | |
1103 | ||
9d5c8243 AK |
1104 | /* Set switch control to serdes energy detect */ |
1105 | reg = rd32(E1000_CONNSW); | |
1106 | reg |= E1000_CONNSW_ENRGSRC; | |
1107 | wr32(E1000_CONNSW, reg); | |
1108 | ||
1109 | /* | |
1110 | * New SerDes mode allows for forcing speed or autonegotiating speed | |
1111 | * at 1gb. Autoneg should be default set by most drivers. This is the | |
1112 | * mode that will be compatible with older link partners and switches. | |
1113 | * However, both are supported by the hardware and some drivers/tools. | |
1114 | */ | |
1115 | reg = rd32(E1000_PCS_LCTL); | |
1116 | ||
1117 | reg &= ~(E1000_PCS_LCTL_AN_ENABLE | E1000_PCS_LCTL_FLV_LINK_UP | | |
1118 | E1000_PCS_LCTL_FSD | E1000_PCS_LCTL_FORCE_LINK); | |
1119 | ||
1120 | if (hw->mac.autoneg) { | |
1121 | /* Set PCS register for autoneg */ | |
1122 | reg |= E1000_PCS_LCTL_FSV_1000 | /* Force 1000 */ | |
1123 | E1000_PCS_LCTL_FDV_FULL | /* SerDes Full duplex */ | |
1124 | E1000_PCS_LCTL_AN_ENABLE | /* Enable Autoneg */ | |
1125 | E1000_PCS_LCTL_AN_RESTART; /* Restart autoneg */ | |
652fff32 | 1126 | hw_dbg("Configuring Autoneg; PCS_LCTL = 0x%08X\n", reg); |
9d5c8243 AK |
1127 | } else { |
1128 | /* Set PCS register for forced speed */ | |
1129 | reg |= E1000_PCS_LCTL_FLV_LINK_UP | /* Force link up */ | |
1130 | E1000_PCS_LCTL_FSV_1000 | /* Force 1000 */ | |
1131 | E1000_PCS_LCTL_FDV_FULL | /* SerDes Full duplex */ | |
1132 | E1000_PCS_LCTL_FSD | /* Force Speed */ | |
1133 | E1000_PCS_LCTL_FORCE_LINK; /* Force Link */ | |
652fff32 | 1134 | hw_dbg("Configuring Forced Link; PCS_LCTL = 0x%08X\n", reg); |
9d5c8243 | 1135 | } |
726c09e7 AD |
1136 | |
1137 | if (hw->mac.type == e1000_82576) { | |
1138 | reg |= E1000_PCS_LCTL_FORCE_FCTRL; | |
1139 | igb_force_mac_fc(hw); | |
1140 | } | |
1141 | ||
9d5c8243 AK |
1142 | wr32(E1000_PCS_LCTL, reg); |
1143 | ||
1144 | return 0; | |
1145 | } | |
1146 | ||
1147 | /** | |
733596be | 1148 | * igb_configure_pcs_link_82575 - Configure PCS link |
9d5c8243 AK |
1149 | * @hw: pointer to the HW structure |
1150 | * | |
1151 | * Configure the physical coding sub-layer (PCS) link. The PCS link is | |
1152 | * only used on copper connections where the serialized gigabit media | |
1153 | * independent interface (sgmii) is being used. Configures the link | |
1154 | * for auto-negotiation or forces speed/duplex. | |
1155 | **/ | |
1156 | static s32 igb_configure_pcs_link_82575(struct e1000_hw *hw) | |
1157 | { | |
1158 | struct e1000_mac_info *mac = &hw->mac; | |
1159 | u32 reg = 0; | |
1160 | ||
1161 | if (hw->phy.media_type != e1000_media_type_copper || | |
1162 | !(igb_sgmii_active_82575(hw))) | |
1163 | goto out; | |
1164 | ||
1165 | /* For SGMII, we need to issue a PCS autoneg restart */ | |
1166 | reg = rd32(E1000_PCS_LCTL); | |
1167 | ||
1168 | /* AN time out should be disabled for SGMII mode */ | |
1169 | reg &= ~(E1000_PCS_LCTL_AN_TIMEOUT); | |
1170 | ||
1171 | if (mac->autoneg) { | |
1172 | /* Make sure forced speed and force link are not set */ | |
1173 | reg &= ~(E1000_PCS_LCTL_FSD | E1000_PCS_LCTL_FORCE_LINK); | |
1174 | ||
1175 | /* | |
1176 | * The PHY should be setup prior to calling this function. | |
1177 | * All we need to do is restart autoneg and enable autoneg. | |
1178 | */ | |
1179 | reg |= E1000_PCS_LCTL_AN_RESTART | E1000_PCS_LCTL_AN_ENABLE; | |
1180 | } else { | |
652fff32 | 1181 | /* Set PCS register for forced speed */ |
9d5c8243 AK |
1182 | |
1183 | /* Turn off bits for full duplex, speed, and autoneg */ | |
1184 | reg &= ~(E1000_PCS_LCTL_FSV_1000 | | |
1185 | E1000_PCS_LCTL_FSV_100 | | |
1186 | E1000_PCS_LCTL_FDV_FULL | | |
1187 | E1000_PCS_LCTL_AN_ENABLE); | |
1188 | ||
1189 | /* Check for duplex first */ | |
1190 | if (mac->forced_speed_duplex & E1000_ALL_FULL_DUPLEX) | |
1191 | reg |= E1000_PCS_LCTL_FDV_FULL; | |
1192 | ||
1193 | /* Now set speed */ | |
1194 | if (mac->forced_speed_duplex & E1000_ALL_100_SPEED) | |
1195 | reg |= E1000_PCS_LCTL_FSV_100; | |
1196 | ||
1197 | /* Force speed and force link */ | |
1198 | reg |= E1000_PCS_LCTL_FSD | | |
1199 | E1000_PCS_LCTL_FORCE_LINK | | |
1200 | E1000_PCS_LCTL_FLV_LINK_UP; | |
1201 | ||
652fff32 | 1202 | hw_dbg("Wrote 0x%08X to PCS_LCTL to configure forced link\n", |
9d5c8243 AK |
1203 | reg); |
1204 | } | |
1205 | wr32(E1000_PCS_LCTL, reg); | |
1206 | ||
1207 | out: | |
1208 | return 0; | |
1209 | } | |
1210 | ||
1211 | /** | |
733596be | 1212 | * igb_sgmii_active_82575 - Return sgmii state |
9d5c8243 AK |
1213 | * @hw: pointer to the HW structure |
1214 | * | |
1215 | * 82575 silicon has a serialized gigabit media independent interface (sgmii) | |
1216 | * which can be enabled for use in the embedded applications. Simply | |
1217 | * return the current state of the sgmii interface. | |
1218 | **/ | |
1219 | static bool igb_sgmii_active_82575(struct e1000_hw *hw) | |
1220 | { | |
c1889bfe | 1221 | struct e1000_dev_spec_82575 *dev_spec = &hw->dev_spec._82575; |
9d5c8243 | 1222 | |
c1889bfe AD |
1223 | if (hw->mac.type != e1000_82575 && hw->mac.type != e1000_82576) |
1224 | return false; | |
9d5c8243 | 1225 | |
c1889bfe | 1226 | return dev_spec->sgmii_active; |
9d5c8243 AK |
1227 | } |
1228 | ||
1229 | /** | |
733596be | 1230 | * igb_reset_init_script_82575 - Inits HW defaults after reset |
9d5c8243 AK |
1231 | * @hw: pointer to the HW structure |
1232 | * | |
1233 | * Inits recommended HW defaults after a reset when there is no EEPROM | |
1234 | * detected. This is only for the 82575. | |
1235 | **/ | |
1236 | static s32 igb_reset_init_script_82575(struct e1000_hw *hw) | |
1237 | { | |
1238 | if (hw->mac.type == e1000_82575) { | |
652fff32 | 1239 | hw_dbg("Running reset init script for 82575\n"); |
9d5c8243 AK |
1240 | /* SerDes configuration via SERDESCTRL */ |
1241 | igb_write_8bit_ctrl_reg(hw, E1000_SCTL, 0x00, 0x0C); | |
1242 | igb_write_8bit_ctrl_reg(hw, E1000_SCTL, 0x01, 0x78); | |
1243 | igb_write_8bit_ctrl_reg(hw, E1000_SCTL, 0x1B, 0x23); | |
1244 | igb_write_8bit_ctrl_reg(hw, E1000_SCTL, 0x23, 0x15); | |
1245 | ||
1246 | /* CCM configuration via CCMCTL register */ | |
1247 | igb_write_8bit_ctrl_reg(hw, E1000_CCMCTL, 0x14, 0x00); | |
1248 | igb_write_8bit_ctrl_reg(hw, E1000_CCMCTL, 0x10, 0x00); | |
1249 | ||
1250 | /* PCIe lanes configuration */ | |
1251 | igb_write_8bit_ctrl_reg(hw, E1000_GIOCTL, 0x00, 0xEC); | |
1252 | igb_write_8bit_ctrl_reg(hw, E1000_GIOCTL, 0x61, 0xDF); | |
1253 | igb_write_8bit_ctrl_reg(hw, E1000_GIOCTL, 0x34, 0x05); | |
1254 | igb_write_8bit_ctrl_reg(hw, E1000_GIOCTL, 0x2F, 0x81); | |
1255 | ||
1256 | /* PCIe PLL Configuration */ | |
1257 | igb_write_8bit_ctrl_reg(hw, E1000_SCCTL, 0x02, 0x47); | |
1258 | igb_write_8bit_ctrl_reg(hw, E1000_SCCTL, 0x14, 0x00); | |
1259 | igb_write_8bit_ctrl_reg(hw, E1000_SCCTL, 0x10, 0x00); | |
1260 | } | |
1261 | ||
1262 | return 0; | |
1263 | } | |
1264 | ||
1265 | /** | |
733596be | 1266 | * igb_read_mac_addr_82575 - Read device MAC address |
9d5c8243 AK |
1267 | * @hw: pointer to the HW structure |
1268 | **/ | |
1269 | static s32 igb_read_mac_addr_82575(struct e1000_hw *hw) | |
1270 | { | |
1271 | s32 ret_val = 0; | |
1272 | ||
1273 | if (igb_check_alt_mac_addr(hw)) | |
1274 | ret_val = igb_read_mac_addr(hw); | |
1275 | ||
1276 | return ret_val; | |
1277 | } | |
1278 | ||
1279 | /** | |
733596be | 1280 | * igb_clear_hw_cntrs_82575 - Clear device specific hardware counters |
9d5c8243 AK |
1281 | * @hw: pointer to the HW structure |
1282 | * | |
1283 | * Clears the hardware counters by reading the counter registers. | |
1284 | **/ | |
1285 | static void igb_clear_hw_cntrs_82575(struct e1000_hw *hw) | |
1286 | { | |
1287 | u32 temp; | |
1288 | ||
1289 | igb_clear_hw_cntrs_base(hw); | |
1290 | ||
1291 | temp = rd32(E1000_PRC64); | |
1292 | temp = rd32(E1000_PRC127); | |
1293 | temp = rd32(E1000_PRC255); | |
1294 | temp = rd32(E1000_PRC511); | |
1295 | temp = rd32(E1000_PRC1023); | |
1296 | temp = rd32(E1000_PRC1522); | |
1297 | temp = rd32(E1000_PTC64); | |
1298 | temp = rd32(E1000_PTC127); | |
1299 | temp = rd32(E1000_PTC255); | |
1300 | temp = rd32(E1000_PTC511); | |
1301 | temp = rd32(E1000_PTC1023); | |
1302 | temp = rd32(E1000_PTC1522); | |
1303 | ||
1304 | temp = rd32(E1000_ALGNERRC); | |
1305 | temp = rd32(E1000_RXERRC); | |
1306 | temp = rd32(E1000_TNCRS); | |
1307 | temp = rd32(E1000_CEXTERR); | |
1308 | temp = rd32(E1000_TSCTC); | |
1309 | temp = rd32(E1000_TSCTFC); | |
1310 | ||
1311 | temp = rd32(E1000_MGTPRC); | |
1312 | temp = rd32(E1000_MGTPDC); | |
1313 | temp = rd32(E1000_MGTPTC); | |
1314 | ||
1315 | temp = rd32(E1000_IAC); | |
1316 | temp = rd32(E1000_ICRXOC); | |
1317 | ||
1318 | temp = rd32(E1000_ICRXPTC); | |
1319 | temp = rd32(E1000_ICRXATC); | |
1320 | temp = rd32(E1000_ICTXPTC); | |
1321 | temp = rd32(E1000_ICTXATC); | |
1322 | temp = rd32(E1000_ICTXQEC); | |
1323 | temp = rd32(E1000_ICTXQMTC); | |
1324 | temp = rd32(E1000_ICRXDMTC); | |
1325 | ||
1326 | temp = rd32(E1000_CBTMPC); | |
1327 | temp = rd32(E1000_HTDPMC); | |
1328 | temp = rd32(E1000_CBRMPC); | |
1329 | temp = rd32(E1000_RPTHC); | |
1330 | temp = rd32(E1000_HGPTC); | |
1331 | temp = rd32(E1000_HTCBDPC); | |
1332 | temp = rd32(E1000_HGORCL); | |
1333 | temp = rd32(E1000_HGORCH); | |
1334 | temp = rd32(E1000_HGOTCL); | |
1335 | temp = rd32(E1000_HGOTCH); | |
1336 | temp = rd32(E1000_LENERRS); | |
1337 | ||
1338 | /* This register should not be read in copper configurations */ | |
1339 | if (hw->phy.media_type == e1000_media_type_internal_serdes) | |
1340 | temp = rd32(E1000_SCVPC); | |
1341 | } | |
1342 | ||
662d7205 AD |
1343 | /** |
1344 | * igb_rx_fifo_flush_82575 - Clean rx fifo after RX enable | |
1345 | * @hw: pointer to the HW structure | |
1346 | * | |
1347 | * After rx enable if managability is enabled then there is likely some | |
1348 | * bad data at the start of the fifo and possibly in the DMA fifo. This | |
1349 | * function clears the fifos and flushes any packets that came in as rx was | |
1350 | * being enabled. | |
1351 | **/ | |
1352 | void igb_rx_fifo_flush_82575(struct e1000_hw *hw) | |
1353 | { | |
1354 | u32 rctl, rlpml, rxdctl[4], rfctl, temp_rctl, rx_enabled; | |
1355 | int i, ms_wait; | |
1356 | ||
1357 | if (hw->mac.type != e1000_82575 || | |
1358 | !(rd32(E1000_MANC) & E1000_MANC_RCV_TCO_EN)) | |
1359 | return; | |
1360 | ||
1361 | /* Disable all RX queues */ | |
1362 | for (i = 0; i < 4; i++) { | |
1363 | rxdctl[i] = rd32(E1000_RXDCTL(i)); | |
1364 | wr32(E1000_RXDCTL(i), | |
1365 | rxdctl[i] & ~E1000_RXDCTL_QUEUE_ENABLE); | |
1366 | } | |
1367 | /* Poll all queues to verify they have shut down */ | |
1368 | for (ms_wait = 0; ms_wait < 10; ms_wait++) { | |
1369 | msleep(1); | |
1370 | rx_enabled = 0; | |
1371 | for (i = 0; i < 4; i++) | |
1372 | rx_enabled |= rd32(E1000_RXDCTL(i)); | |
1373 | if (!(rx_enabled & E1000_RXDCTL_QUEUE_ENABLE)) | |
1374 | break; | |
1375 | } | |
1376 | ||
1377 | if (ms_wait == 10) | |
1378 | hw_dbg("Queue disable timed out after 10ms\n"); | |
1379 | ||
1380 | /* Clear RLPML, RCTL.SBP, RFCTL.LEF, and set RCTL.LPE so that all | |
1381 | * incoming packets are rejected. Set enable and wait 2ms so that | |
1382 | * any packet that was coming in as RCTL.EN was set is flushed | |
1383 | */ | |
1384 | rfctl = rd32(E1000_RFCTL); | |
1385 | wr32(E1000_RFCTL, rfctl & ~E1000_RFCTL_LEF); | |
1386 | ||
1387 | rlpml = rd32(E1000_RLPML); | |
1388 | wr32(E1000_RLPML, 0); | |
1389 | ||
1390 | rctl = rd32(E1000_RCTL); | |
1391 | temp_rctl = rctl & ~(E1000_RCTL_EN | E1000_RCTL_SBP); | |
1392 | temp_rctl |= E1000_RCTL_LPE; | |
1393 | ||
1394 | wr32(E1000_RCTL, temp_rctl); | |
1395 | wr32(E1000_RCTL, temp_rctl | E1000_RCTL_EN); | |
1396 | wrfl(); | |
1397 | msleep(2); | |
1398 | ||
1399 | /* Enable RX queues that were previously enabled and restore our | |
1400 | * previous state | |
1401 | */ | |
1402 | for (i = 0; i < 4; i++) | |
1403 | wr32(E1000_RXDCTL(i), rxdctl[i]); | |
1404 | wr32(E1000_RCTL, rctl); | |
1405 | wrfl(); | |
1406 | ||
1407 | wr32(E1000_RLPML, rlpml); | |
1408 | wr32(E1000_RFCTL, rfctl); | |
1409 | ||
1410 | /* Flush receive errors generated by workaround */ | |
1411 | rd32(E1000_ROC); | |
1412 | rd32(E1000_RNBC); | |
1413 | rd32(E1000_MPC); | |
1414 | } | |
1415 | ||
9d5c8243 AK |
1416 | static struct e1000_mac_operations e1000_mac_ops_82575 = { |
1417 | .reset_hw = igb_reset_hw_82575, | |
1418 | .init_hw = igb_init_hw_82575, | |
1419 | .check_for_link = igb_check_for_link_82575, | |
2d064c06 | 1420 | .rar_set = igb_rar_set, |
9d5c8243 AK |
1421 | .read_mac_addr = igb_read_mac_addr_82575, |
1422 | .get_speed_and_duplex = igb_get_speed_and_duplex_copper, | |
1423 | }; | |
1424 | ||
1425 | static struct e1000_phy_operations e1000_phy_ops_82575 = { | |
1426 | .acquire_phy = igb_acquire_phy_82575, | |
1427 | .get_cfg_done = igb_get_cfg_done_82575, | |
1428 | .release_phy = igb_release_phy_82575, | |
1429 | }; | |
1430 | ||
1431 | static struct e1000_nvm_operations e1000_nvm_ops_82575 = { | |
1432 | .acquire_nvm = igb_acquire_nvm_82575, | |
1433 | .read_nvm = igb_read_nvm_eerd, | |
1434 | .release_nvm = igb_release_nvm_82575, | |
1435 | .write_nvm = igb_write_nvm_spi, | |
1436 | }; | |
1437 | ||
1438 | const struct e1000_info e1000_82575_info = { | |
1439 | .get_invariants = igb_get_invariants_82575, | |
1440 | .mac_ops = &e1000_mac_ops_82575, | |
1441 | .phy_ops = &e1000_phy_ops_82575, | |
1442 | .nvm_ops = &e1000_nvm_ops_82575, | |
1443 | }; | |
1444 |