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1da177e4 LT |
1 | /******************************************************************************* |
2 | ||
0abb6eb1 AK |
3 | Intel PRO/1000 Linux driver |
4 | Copyright(c) 1999 - 2006 Intel Corporation. | |
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> | |
3d41e30a | 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 | ||
120a5d0d | 27 | */ |
1da177e4 LT |
28 | |
29 | /* e1000_hw.c | |
30 | * Shared functions for accessing and configuring the MAC | |
31 | */ | |
32 | ||
675ad473 | 33 | #include "e1000.h" |
1da177e4 | 34 | |
406874a7 | 35 | static s32 e1000_check_downshift(struct e1000_hw *hw); |
64798845 JP |
36 | static s32 e1000_check_polarity(struct e1000_hw *hw, |
37 | e1000_rev_polarity *polarity); | |
35574764 NN |
38 | static void e1000_clear_hw_cntrs(struct e1000_hw *hw); |
39 | static void e1000_clear_vfta(struct e1000_hw *hw); | |
406874a7 | 40 | static s32 e1000_config_dsp_after_link_change(struct e1000_hw *hw, |
64798845 | 41 | bool link_up); |
406874a7 JP |
42 | static s32 e1000_config_fc_after_link_up(struct e1000_hw *hw); |
43 | static s32 e1000_detect_gig_phy(struct e1000_hw *hw); | |
406874a7 | 44 | static s32 e1000_get_auto_rd_done(struct e1000_hw *hw); |
64798845 JP |
45 | static s32 e1000_get_cable_length(struct e1000_hw *hw, u16 *min_length, |
46 | u16 *max_length); | |
406874a7 | 47 | static s32 e1000_get_phy_cfg_done(struct e1000_hw *hw); |
406874a7 | 48 | static s32 e1000_id_led_init(struct e1000_hw *hw); |
35574764 | 49 | static void e1000_init_rx_addrs(struct e1000_hw *hw); |
64798845 JP |
50 | static s32 e1000_phy_igp_get_info(struct e1000_hw *hw, |
51 | struct e1000_phy_info *phy_info); | |
64798845 JP |
52 | static s32 e1000_phy_m88_get_info(struct e1000_hw *hw, |
53 | struct e1000_phy_info *phy_info); | |
406874a7 | 54 | static s32 e1000_set_d3_lplu_state(struct e1000_hw *hw, bool active); |
406874a7 JP |
55 | static s32 e1000_wait_autoneg(struct e1000_hw *hw); |
56 | static void e1000_write_reg_io(struct e1000_hw *hw, u32 offset, u32 value); | |
57 | static s32 e1000_set_phy_type(struct e1000_hw *hw); | |
1da177e4 | 58 | static void e1000_phy_init_script(struct e1000_hw *hw); |
406874a7 JP |
59 | static s32 e1000_setup_copper_link(struct e1000_hw *hw); |
60 | static s32 e1000_setup_fiber_serdes_link(struct e1000_hw *hw); | |
61 | static s32 e1000_adjust_serdes_amplitude(struct e1000_hw *hw); | |
62 | static s32 e1000_phy_force_speed_duplex(struct e1000_hw *hw); | |
63 | static s32 e1000_config_mac_to_phy(struct e1000_hw *hw); | |
64 | static void e1000_raise_mdi_clk(struct e1000_hw *hw, u32 *ctrl); | |
65 | static void e1000_lower_mdi_clk(struct e1000_hw *hw, u32 *ctrl); | |
120a5d0d | 66 | static void e1000_shift_out_mdi_bits(struct e1000_hw *hw, u32 data, u16 count); |
406874a7 JP |
67 | static u16 e1000_shift_in_mdi_bits(struct e1000_hw *hw); |
68 | static s32 e1000_phy_reset_dsp(struct e1000_hw *hw); | |
69 | static s32 e1000_write_eeprom_spi(struct e1000_hw *hw, u16 offset, | |
120a5d0d | 70 | u16 words, u16 *data); |
64798845 JP |
71 | static s32 e1000_write_eeprom_microwire(struct e1000_hw *hw, u16 offset, |
72 | u16 words, u16 *data); | |
406874a7 JP |
73 | static s32 e1000_spi_eeprom_ready(struct e1000_hw *hw); |
74 | static void e1000_raise_ee_clk(struct e1000_hw *hw, u32 *eecd); | |
75 | static void e1000_lower_ee_clk(struct e1000_hw *hw, u32 *eecd); | |
64798845 | 76 | static void e1000_shift_out_ee_bits(struct e1000_hw *hw, u16 data, u16 count); |
406874a7 | 77 | static s32 e1000_write_phy_reg_ex(struct e1000_hw *hw, u32 reg_addr, |
64798845 | 78 | u16 phy_data); |
120a5d0d | 79 | static s32 e1000_read_phy_reg_ex(struct e1000_hw *hw, u32 reg_addr, |
64798845 | 80 | u16 *phy_data); |
406874a7 JP |
81 | static u16 e1000_shift_in_ee_bits(struct e1000_hw *hw, u16 count); |
82 | static s32 e1000_acquire_eeprom(struct e1000_hw *hw); | |
1da177e4 LT |
83 | static void e1000_release_eeprom(struct e1000_hw *hw); |
84 | static void e1000_standby_eeprom(struct e1000_hw *hw); | |
406874a7 JP |
85 | static s32 e1000_set_vco_speed(struct e1000_hw *hw); |
86 | static s32 e1000_polarity_reversal_workaround(struct e1000_hw *hw); | |
87 | static s32 e1000_set_phy_mode(struct e1000_hw *hw); | |
120a5d0d JB |
88 | static s32 e1000_do_read_eeprom(struct e1000_hw *hw, u16 offset, u16 words, |
89 | u16 *data); | |
90 | static s32 e1000_do_write_eeprom(struct e1000_hw *hw, u16 offset, u16 words, | |
91 | u16 *data); | |
1da177e4 LT |
92 | |
93 | /* IGP cable length table */ | |
94 | static const | |
120a5d0d JB |
95 | u16 e1000_igp_cable_length_table[IGP01E1000_AGC_LENGTH_TABLE_SIZE] = { |
96 | 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, | |
97 | 5, 10, 10, 10, 10, 10, 10, 10, 20, 20, 20, 20, 20, 25, 25, 25, | |
98 | 25, 25, 25, 25, 30, 30, 30, 30, 40, 40, 40, 40, 40, 40, 40, 40, | |
99 | 40, 50, 50, 50, 50, 50, 50, 50, 60, 60, 60, 60, 60, 60, 60, 60, | |
100 | 60, 70, 70, 70, 70, 70, 70, 80, 80, 80, 80, 80, 80, 90, 90, 90, | |
101 | 90, 90, 90, 90, 90, 90, 100, 100, 100, 100, 100, 100, 100, 100, 100, | |
102 | 100, | |
103 | 100, 100, 100, 100, 110, 110, 110, 110, 110, 110, 110, 110, 110, 110, | |
104 | 110, 110, | |
105 | 110, 110, 110, 110, 110, 110, 120, 120, 120, 120, 120, 120, 120, 120, | |
106 | 120, 120 | |
107 | }; | |
1da177e4 | 108 | |
78566fec CL |
109 | static DEFINE_SPINLOCK(e1000_eeprom_lock); |
110 | ||
120a5d0d JB |
111 | /** |
112 | * e1000_set_phy_type - Set the phy type member in the hw struct. | |
113 | * @hw: Struct containing variables accessed by shared code | |
114 | */ | |
64798845 | 115 | static s32 e1000_set_phy_type(struct e1000_hw *hw) |
1da177e4 | 116 | { |
675ad473 | 117 | e_dbg("e1000_set_phy_type"); |
1da177e4 | 118 | |
120a5d0d JB |
119 | if (hw->mac_type == e1000_undefined) |
120 | return -E1000_ERR_PHY_TYPE; | |
1da177e4 | 121 | |
120a5d0d JB |
122 | switch (hw->phy_id) { |
123 | case M88E1000_E_PHY_ID: | |
124 | case M88E1000_I_PHY_ID: | |
125 | case M88E1011_I_PHY_ID: | |
126 | case M88E1111_I_PHY_ID: | |
127 | hw->phy_type = e1000_phy_m88; | |
128 | break; | |
129 | case IGP01E1000_I_PHY_ID: | |
130 | if (hw->mac_type == e1000_82541 || | |
131 | hw->mac_type == e1000_82541_rev_2 || | |
132 | hw->mac_type == e1000_82547 || | |
133 | hw->mac_type == e1000_82547_rev_2) { | |
134 | hw->phy_type = e1000_phy_igp; | |
135 | break; | |
136 | } | |
137 | default: | |
138 | /* Should never have loaded on this device */ | |
139 | hw->phy_type = e1000_phy_undefined; | |
140 | return -E1000_ERR_PHY_TYPE; | |
141 | } | |
1da177e4 | 142 | |
120a5d0d JB |
143 | return E1000_SUCCESS; |
144 | } | |
1da177e4 | 145 | |
120a5d0d JB |
146 | /** |
147 | * e1000_phy_init_script - IGP phy init script - initializes the GbE PHY | |
148 | * @hw: Struct containing variables accessed by shared code | |
149 | */ | |
150 | static void e1000_phy_init_script(struct e1000_hw *hw) | |
151 | { | |
152 | u32 ret_val; | |
153 | u16 phy_saved_data; | |
154 | ||
675ad473 | 155 | e_dbg("e1000_phy_init_script"); |
120a5d0d JB |
156 | |
157 | if (hw->phy_init_script) { | |
158 | msleep(20); | |
159 | ||
160 | /* Save off the current value of register 0x2F5B to be restored at | |
161 | * the end of this routine. */ | |
162 | ret_val = e1000_read_phy_reg(hw, 0x2F5B, &phy_saved_data); | |
163 | ||
164 | /* Disabled the PHY transmitter */ | |
165 | e1000_write_phy_reg(hw, 0x2F5B, 0x0003); | |
166 | msleep(20); | |
167 | ||
168 | e1000_write_phy_reg(hw, 0x0000, 0x0140); | |
169 | msleep(5); | |
170 | ||
171 | switch (hw->mac_type) { | |
172 | case e1000_82541: | |
173 | case e1000_82547: | |
174 | e1000_write_phy_reg(hw, 0x1F95, 0x0001); | |
175 | e1000_write_phy_reg(hw, 0x1F71, 0xBD21); | |
176 | e1000_write_phy_reg(hw, 0x1F79, 0x0018); | |
177 | e1000_write_phy_reg(hw, 0x1F30, 0x1600); | |
178 | e1000_write_phy_reg(hw, 0x1F31, 0x0014); | |
179 | e1000_write_phy_reg(hw, 0x1F32, 0x161C); | |
180 | e1000_write_phy_reg(hw, 0x1F94, 0x0003); | |
181 | e1000_write_phy_reg(hw, 0x1F96, 0x003F); | |
182 | e1000_write_phy_reg(hw, 0x2010, 0x0008); | |
183 | break; | |
1da177e4 | 184 | |
120a5d0d JB |
185 | case e1000_82541_rev_2: |
186 | case e1000_82547_rev_2: | |
187 | e1000_write_phy_reg(hw, 0x1F73, 0x0099); | |
188 | break; | |
189 | default: | |
190 | break; | |
191 | } | |
1da177e4 | 192 | |
120a5d0d JB |
193 | e1000_write_phy_reg(hw, 0x0000, 0x3300); |
194 | msleep(20); | |
195 | ||
196 | /* Now enable the transmitter */ | |
197 | e1000_write_phy_reg(hw, 0x2F5B, phy_saved_data); | |
198 | ||
199 | if (hw->mac_type == e1000_82547) { | |
200 | u16 fused, fine, coarse; | |
201 | ||
202 | /* Move to analog registers page */ | |
203 | e1000_read_phy_reg(hw, | |
204 | IGP01E1000_ANALOG_SPARE_FUSE_STATUS, | |
205 | &fused); | |
206 | ||
207 | if (!(fused & IGP01E1000_ANALOG_SPARE_FUSE_ENABLED)) { | |
208 | e1000_read_phy_reg(hw, | |
209 | IGP01E1000_ANALOG_FUSE_STATUS, | |
210 | &fused); | |
211 | ||
212 | fine = fused & IGP01E1000_ANALOG_FUSE_FINE_MASK; | |
213 | coarse = | |
214 | fused & IGP01E1000_ANALOG_FUSE_COARSE_MASK; | |
215 | ||
216 | if (coarse > | |
217 | IGP01E1000_ANALOG_FUSE_COARSE_THRESH) { | |
218 | coarse -= | |
219 | IGP01E1000_ANALOG_FUSE_COARSE_10; | |
220 | fine -= IGP01E1000_ANALOG_FUSE_FINE_1; | |
221 | } else if (coarse == | |
222 | IGP01E1000_ANALOG_FUSE_COARSE_THRESH) | |
223 | fine -= IGP01E1000_ANALOG_FUSE_FINE_10; | |
224 | ||
225 | fused = | |
226 | (fused & IGP01E1000_ANALOG_FUSE_POLY_MASK) | | |
227 | (fine & IGP01E1000_ANALOG_FUSE_FINE_MASK) | | |
228 | (coarse & | |
229 | IGP01E1000_ANALOG_FUSE_COARSE_MASK); | |
230 | ||
231 | e1000_write_phy_reg(hw, | |
232 | IGP01E1000_ANALOG_FUSE_CONTROL, | |
233 | fused); | |
234 | e1000_write_phy_reg(hw, | |
235 | IGP01E1000_ANALOG_FUSE_BYPASS, | |
236 | IGP01E1000_ANALOG_FUSE_ENABLE_SW_CONTROL); | |
237 | } | |
238 | } | |
239 | } | |
1da177e4 LT |
240 | } |
241 | ||
120a5d0d JB |
242 | /** |
243 | * e1000_set_mac_type - Set the mac type member in the hw struct. | |
244 | * @hw: Struct containing variables accessed by shared code | |
245 | */ | |
64798845 | 246 | s32 e1000_set_mac_type(struct e1000_hw *hw) |
1da177e4 | 247 | { |
675ad473 | 248 | e_dbg("e1000_set_mac_type"); |
bd2371eb JG |
249 | |
250 | switch (hw->device_id) { | |
251 | case E1000_DEV_ID_82542: | |
252 | switch (hw->revision_id) { | |
253 | case E1000_82542_2_0_REV_ID: | |
254 | hw->mac_type = e1000_82542_rev2_0; | |
255 | break; | |
256 | case E1000_82542_2_1_REV_ID: | |
257 | hw->mac_type = e1000_82542_rev2_1; | |
258 | break; | |
259 | default: | |
260 | /* Invalid 82542 revision ID */ | |
261 | return -E1000_ERR_MAC_TYPE; | |
262 | } | |
263 | break; | |
264 | case E1000_DEV_ID_82543GC_FIBER: | |
265 | case E1000_DEV_ID_82543GC_COPPER: | |
266 | hw->mac_type = e1000_82543; | |
267 | break; | |
268 | case E1000_DEV_ID_82544EI_COPPER: | |
269 | case E1000_DEV_ID_82544EI_FIBER: | |
270 | case E1000_DEV_ID_82544GC_COPPER: | |
271 | case E1000_DEV_ID_82544GC_LOM: | |
272 | hw->mac_type = e1000_82544; | |
273 | break; | |
274 | case E1000_DEV_ID_82540EM: | |
275 | case E1000_DEV_ID_82540EM_LOM: | |
276 | case E1000_DEV_ID_82540EP: | |
277 | case E1000_DEV_ID_82540EP_LOM: | |
278 | case E1000_DEV_ID_82540EP_LP: | |
279 | hw->mac_type = e1000_82540; | |
280 | break; | |
281 | case E1000_DEV_ID_82545EM_COPPER: | |
282 | case E1000_DEV_ID_82545EM_FIBER: | |
283 | hw->mac_type = e1000_82545; | |
284 | break; | |
285 | case E1000_DEV_ID_82545GM_COPPER: | |
286 | case E1000_DEV_ID_82545GM_FIBER: | |
287 | case E1000_DEV_ID_82545GM_SERDES: | |
288 | hw->mac_type = e1000_82545_rev_3; | |
289 | break; | |
290 | case E1000_DEV_ID_82546EB_COPPER: | |
291 | case E1000_DEV_ID_82546EB_FIBER: | |
292 | case E1000_DEV_ID_82546EB_QUAD_COPPER: | |
293 | hw->mac_type = e1000_82546; | |
294 | break; | |
295 | case E1000_DEV_ID_82546GB_COPPER: | |
296 | case E1000_DEV_ID_82546GB_FIBER: | |
297 | case E1000_DEV_ID_82546GB_SERDES: | |
298 | case E1000_DEV_ID_82546GB_PCIE: | |
299 | case E1000_DEV_ID_82546GB_QUAD_COPPER: | |
300 | case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3: | |
301 | hw->mac_type = e1000_82546_rev_3; | |
302 | break; | |
303 | case E1000_DEV_ID_82541EI: | |
304 | case E1000_DEV_ID_82541EI_MOBILE: | |
305 | case E1000_DEV_ID_82541ER_LOM: | |
306 | hw->mac_type = e1000_82541; | |
307 | break; | |
308 | case E1000_DEV_ID_82541ER: | |
309 | case E1000_DEV_ID_82541GI: | |
310 | case E1000_DEV_ID_82541GI_LF: | |
311 | case E1000_DEV_ID_82541GI_MOBILE: | |
312 | hw->mac_type = e1000_82541_rev_2; | |
313 | break; | |
314 | case E1000_DEV_ID_82547EI: | |
315 | case E1000_DEV_ID_82547EI_MOBILE: | |
316 | hw->mac_type = e1000_82547; | |
317 | break; | |
318 | case E1000_DEV_ID_82547GI: | |
319 | hw->mac_type = e1000_82547_rev_2; | |
320 | break; | |
bd2371eb JG |
321 | default: |
322 | /* Should never have loaded on this device */ | |
323 | return -E1000_ERR_MAC_TYPE; | |
324 | } | |
325 | ||
326 | switch (hw->mac_type) { | |
bd2371eb JG |
327 | case e1000_82541: |
328 | case e1000_82547: | |
329 | case e1000_82541_rev_2: | |
330 | case e1000_82547_rev_2: | |
c3033b01 | 331 | hw->asf_firmware_present = true; |
bd2371eb JG |
332 | break; |
333 | default: | |
334 | break; | |
335 | } | |
336 | ||
167fb284 JG |
337 | /* The 82543 chip does not count tx_carrier_errors properly in |
338 | * FD mode | |
339 | */ | |
340 | if (hw->mac_type == e1000_82543) | |
c3033b01 | 341 | hw->bad_tx_carr_stats_fd = true; |
167fb284 | 342 | |
15e376b4 | 343 | if (hw->mac_type > e1000_82544) |
c3033b01 | 344 | hw->has_smbus = true; |
bb8e3311 | 345 | |
bd2371eb | 346 | return E1000_SUCCESS; |
1da177e4 LT |
347 | } |
348 | ||
120a5d0d JB |
349 | /** |
350 | * e1000_set_media_type - Set media type and TBI compatibility. | |
351 | * @hw: Struct containing variables accessed by shared code | |
352 | */ | |
64798845 | 353 | void e1000_set_media_type(struct e1000_hw *hw) |
1da177e4 | 354 | { |
120a5d0d JB |
355 | u32 status; |
356 | ||
675ad473 | 357 | e_dbg("e1000_set_media_type"); |
120a5d0d JB |
358 | |
359 | if (hw->mac_type != e1000_82543) { | |
360 | /* tbi_compatibility is only valid on 82543 */ | |
361 | hw->tbi_compatibility_en = false; | |
362 | } | |
363 | ||
364 | switch (hw->device_id) { | |
365 | case E1000_DEV_ID_82545GM_SERDES: | |
366 | case E1000_DEV_ID_82546GB_SERDES: | |
367 | hw->media_type = e1000_media_type_internal_serdes; | |
368 | break; | |
369 | default: | |
370 | switch (hw->mac_type) { | |
371 | case e1000_82542_rev2_0: | |
372 | case e1000_82542_rev2_1: | |
373 | hw->media_type = e1000_media_type_fiber; | |
374 | break; | |
375 | default: | |
376 | status = er32(STATUS); | |
377 | if (status & E1000_STATUS_TBIMODE) { | |
378 | hw->media_type = e1000_media_type_fiber; | |
379 | /* tbi_compatibility not valid on fiber */ | |
380 | hw->tbi_compatibility_en = false; | |
381 | } else { | |
382 | hw->media_type = e1000_media_type_copper; | |
383 | } | |
384 | break; | |
385 | } | |
386 | } | |
1da177e4 LT |
387 | } |
388 | ||
120a5d0d JB |
389 | /** |
390 | * e1000_reset_hw: reset the hardware completely | |
391 | * @hw: Struct containing variables accessed by shared code | |
1da177e4 | 392 | * |
120a5d0d JB |
393 | * Reset the transmit and receive units; mask and clear all interrupts. |
394 | */ | |
64798845 | 395 | s32 e1000_reset_hw(struct e1000_hw *hw) |
1da177e4 | 396 | { |
120a5d0d JB |
397 | u32 ctrl; |
398 | u32 ctrl_ext; | |
399 | u32 icr; | |
400 | u32 manc; | |
401 | u32 led_ctrl; | |
402 | s32 ret_val; | |
403 | ||
675ad473 | 404 | e_dbg("e1000_reset_hw"); |
120a5d0d JB |
405 | |
406 | /* For 82542 (rev 2.0), disable MWI before issuing a device reset */ | |
407 | if (hw->mac_type == e1000_82542_rev2_0) { | |
675ad473 | 408 | e_dbg("Disabling MWI on 82542 rev 2.0\n"); |
120a5d0d JB |
409 | e1000_pci_clear_mwi(hw); |
410 | } | |
411 | ||
412 | /* Clear interrupt mask to stop board from generating interrupts */ | |
675ad473 | 413 | e_dbg("Masking off all interrupts\n"); |
120a5d0d JB |
414 | ew32(IMC, 0xffffffff); |
415 | ||
416 | /* Disable the Transmit and Receive units. Then delay to allow | |
417 | * any pending transactions to complete before we hit the MAC with | |
418 | * the global reset. | |
419 | */ | |
420 | ew32(RCTL, 0); | |
421 | ew32(TCTL, E1000_TCTL_PSP); | |
422 | E1000_WRITE_FLUSH(); | |
423 | ||
424 | /* The tbi_compatibility_on Flag must be cleared when Rctl is cleared. */ | |
425 | hw->tbi_compatibility_on = false; | |
426 | ||
427 | /* Delay to allow any outstanding PCI transactions to complete before | |
428 | * resetting the device | |
429 | */ | |
430 | msleep(10); | |
431 | ||
432 | ctrl = er32(CTRL); | |
433 | ||
434 | /* Must reset the PHY before resetting the MAC */ | |
435 | if ((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_82547)) { | |
436 | ew32(CTRL, (ctrl | E1000_CTRL_PHY_RST)); | |
437 | msleep(5); | |
438 | } | |
439 | ||
440 | /* Issue a global reset to the MAC. This will reset the chip's | |
441 | * transmit, receive, DMA, and link units. It will not effect | |
442 | * the current PCI configuration. The global reset bit is self- | |
443 | * clearing, and should clear within a microsecond. | |
444 | */ | |
675ad473 | 445 | e_dbg("Issuing a global reset to MAC\n"); |
120a5d0d JB |
446 | |
447 | switch (hw->mac_type) { | |
448 | case e1000_82544: | |
449 | case e1000_82540: | |
450 | case e1000_82545: | |
451 | case e1000_82546: | |
452 | case e1000_82541: | |
453 | case e1000_82541_rev_2: | |
454 | /* These controllers can't ack the 64-bit write when issuing the | |
455 | * reset, so use IO-mapping as a workaround to issue the reset */ | |
456 | E1000_WRITE_REG_IO(hw, CTRL, (ctrl | E1000_CTRL_RST)); | |
457 | break; | |
458 | case e1000_82545_rev_3: | |
459 | case e1000_82546_rev_3: | |
460 | /* Reset is performed on a shadow of the control register */ | |
461 | ew32(CTRL_DUP, (ctrl | E1000_CTRL_RST)); | |
462 | break; | |
463 | default: | |
464 | ew32(CTRL, (ctrl | E1000_CTRL_RST)); | |
465 | break; | |
466 | } | |
467 | ||
468 | /* After MAC reset, force reload of EEPROM to restore power-on settings to | |
469 | * device. Later controllers reload the EEPROM automatically, so just wait | |
470 | * for reload to complete. | |
471 | */ | |
472 | switch (hw->mac_type) { | |
473 | case e1000_82542_rev2_0: | |
474 | case e1000_82542_rev2_1: | |
475 | case e1000_82543: | |
476 | case e1000_82544: | |
477 | /* Wait for reset to complete */ | |
478 | udelay(10); | |
479 | ctrl_ext = er32(CTRL_EXT); | |
480 | ctrl_ext |= E1000_CTRL_EXT_EE_RST; | |
481 | ew32(CTRL_EXT, ctrl_ext); | |
482 | E1000_WRITE_FLUSH(); | |
483 | /* Wait for EEPROM reload */ | |
484 | msleep(2); | |
485 | break; | |
486 | case e1000_82541: | |
487 | case e1000_82541_rev_2: | |
488 | case e1000_82547: | |
489 | case e1000_82547_rev_2: | |
490 | /* Wait for EEPROM reload */ | |
491 | msleep(20); | |
492 | break; | |
493 | default: | |
494 | /* Auto read done will delay 5ms or poll based on mac type */ | |
495 | ret_val = e1000_get_auto_rd_done(hw); | |
496 | if (ret_val) | |
497 | return ret_val; | |
498 | break; | |
499 | } | |
500 | ||
501 | /* Disable HW ARPs on ASF enabled adapters */ | |
502 | if (hw->mac_type >= e1000_82540) { | |
503 | manc = er32(MANC); | |
504 | manc &= ~(E1000_MANC_ARP_EN); | |
505 | ew32(MANC, manc); | |
506 | } | |
507 | ||
508 | if ((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_82547)) { | |
509 | e1000_phy_init_script(hw); | |
510 | ||
511 | /* Configure activity LED after PHY reset */ | |
512 | led_ctrl = er32(LEDCTL); | |
513 | led_ctrl &= IGP_ACTIVITY_LED_MASK; | |
514 | led_ctrl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE); | |
515 | ew32(LEDCTL, led_ctrl); | |
516 | } | |
517 | ||
518 | /* Clear interrupt mask to stop board from generating interrupts */ | |
675ad473 | 519 | e_dbg("Masking off all interrupts\n"); |
120a5d0d JB |
520 | ew32(IMC, 0xffffffff); |
521 | ||
522 | /* Clear any pending interrupt events. */ | |
523 | icr = er32(ICR); | |
524 | ||
525 | /* If MWI was previously enabled, reenable it. */ | |
526 | if (hw->mac_type == e1000_82542_rev2_0) { | |
527 | if (hw->pci_cmd_word & PCI_COMMAND_INVALIDATE) | |
528 | e1000_pci_set_mwi(hw); | |
529 | } | |
530 | ||
531 | return E1000_SUCCESS; | |
1da177e4 LT |
532 | } |
533 | ||
120a5d0d JB |
534 | /** |
535 | * e1000_init_hw: Performs basic configuration of the adapter. | |
536 | * @hw: Struct containing variables accessed by shared code | |
1da177e4 LT |
537 | * |
538 | * Assumes that the controller has previously been reset and is in a | |
539 | * post-reset uninitialized state. Initializes the receive address registers, | |
540 | * multicast table, and VLAN filter table. Calls routines to setup link | |
541 | * configuration and flow control settings. Clears all on-chip counters. Leaves | |
542 | * the transmit and receive units disabled and uninitialized. | |
120a5d0d | 543 | */ |
64798845 | 544 | s32 e1000_init_hw(struct e1000_hw *hw) |
1da177e4 | 545 | { |
120a5d0d JB |
546 | u32 ctrl; |
547 | u32 i; | |
548 | s32 ret_val; | |
549 | u32 mta_size; | |
550 | u32 ctrl_ext; | |
551 | ||
675ad473 | 552 | e_dbg("e1000_init_hw"); |
120a5d0d JB |
553 | |
554 | /* Initialize Identification LED */ | |
555 | ret_val = e1000_id_led_init(hw); | |
556 | if (ret_val) { | |
675ad473 | 557 | e_dbg("Error Initializing Identification LED\n"); |
120a5d0d JB |
558 | return ret_val; |
559 | } | |
560 | ||
561 | /* Set the media type and TBI compatibility */ | |
562 | e1000_set_media_type(hw); | |
563 | ||
564 | /* Disabling VLAN filtering. */ | |
675ad473 | 565 | e_dbg("Initializing the IEEE VLAN\n"); |
120a5d0d JB |
566 | if (hw->mac_type < e1000_82545_rev_3) |
567 | ew32(VET, 0); | |
568 | e1000_clear_vfta(hw); | |
569 | ||
570 | /* For 82542 (rev 2.0), disable MWI and put the receiver into reset */ | |
571 | if (hw->mac_type == e1000_82542_rev2_0) { | |
675ad473 | 572 | e_dbg("Disabling MWI on 82542 rev 2.0\n"); |
120a5d0d JB |
573 | e1000_pci_clear_mwi(hw); |
574 | ew32(RCTL, E1000_RCTL_RST); | |
575 | E1000_WRITE_FLUSH(); | |
576 | msleep(5); | |
577 | } | |
578 | ||
579 | /* Setup the receive address. This involves initializing all of the Receive | |
580 | * Address Registers (RARs 0 - 15). | |
581 | */ | |
582 | e1000_init_rx_addrs(hw); | |
583 | ||
584 | /* For 82542 (rev 2.0), take the receiver out of reset and enable MWI */ | |
585 | if (hw->mac_type == e1000_82542_rev2_0) { | |
586 | ew32(RCTL, 0); | |
587 | E1000_WRITE_FLUSH(); | |
588 | msleep(1); | |
589 | if (hw->pci_cmd_word & PCI_COMMAND_INVALIDATE) | |
590 | e1000_pci_set_mwi(hw); | |
591 | } | |
592 | ||
593 | /* Zero out the Multicast HASH table */ | |
675ad473 | 594 | e_dbg("Zeroing the MTA\n"); |
120a5d0d JB |
595 | mta_size = E1000_MC_TBL_SIZE; |
596 | for (i = 0; i < mta_size; i++) { | |
597 | E1000_WRITE_REG_ARRAY(hw, MTA, i, 0); | |
598 | /* use write flush to prevent Memory Write Block (MWB) from | |
599 | * occurring when accessing our register space */ | |
600 | E1000_WRITE_FLUSH(); | |
601 | } | |
602 | ||
603 | /* Set the PCI priority bit correctly in the CTRL register. This | |
604 | * determines if the adapter gives priority to receives, or if it | |
605 | * gives equal priority to transmits and receives. Valid only on | |
606 | * 82542 and 82543 silicon. | |
607 | */ | |
608 | if (hw->dma_fairness && hw->mac_type <= e1000_82543) { | |
609 | ctrl = er32(CTRL); | |
610 | ew32(CTRL, ctrl | E1000_CTRL_PRIOR); | |
611 | } | |
612 | ||
613 | switch (hw->mac_type) { | |
614 | case e1000_82545_rev_3: | |
615 | case e1000_82546_rev_3: | |
616 | break; | |
617 | default: | |
618 | /* Workaround for PCI-X problem when BIOS sets MMRBC incorrectly. */ | |
619 | if (hw->bus_type == e1000_bus_type_pcix | |
620 | && e1000_pcix_get_mmrbc(hw) > 2048) | |
621 | e1000_pcix_set_mmrbc(hw, 2048); | |
622 | break; | |
623 | } | |
624 | ||
625 | /* Call a subroutine to configure the link and setup flow control. */ | |
626 | ret_val = e1000_setup_link(hw); | |
627 | ||
628 | /* Set the transmit descriptor write-back policy */ | |
629 | if (hw->mac_type > e1000_82544) { | |
630 | ctrl = er32(TXDCTL); | |
631 | ctrl = | |
632 | (ctrl & ~E1000_TXDCTL_WTHRESH) | | |
633 | E1000_TXDCTL_FULL_TX_DESC_WB; | |
634 | ew32(TXDCTL, ctrl); | |
635 | } | |
636 | ||
637 | /* Clear all of the statistics registers (clear on read). It is | |
638 | * important that we do this after we have tried to establish link | |
639 | * because the symbol error count will increment wildly if there | |
640 | * is no link. | |
641 | */ | |
642 | e1000_clear_hw_cntrs(hw); | |
643 | ||
644 | if (hw->device_id == E1000_DEV_ID_82546GB_QUAD_COPPER || | |
645 | hw->device_id == E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3) { | |
646 | ctrl_ext = er32(CTRL_EXT); | |
647 | /* Relaxed ordering must be disabled to avoid a parity | |
648 | * error crash in a PCI slot. */ | |
649 | ctrl_ext |= E1000_CTRL_EXT_RO_DIS; | |
650 | ew32(CTRL_EXT, ctrl_ext); | |
651 | } | |
652 | ||
653 | return ret_val; | |
1da177e4 LT |
654 | } |
655 | ||
120a5d0d JB |
656 | /** |
657 | * e1000_adjust_serdes_amplitude - Adjust SERDES output amplitude based on EEPROM setting. | |
658 | * @hw: Struct containing variables accessed by shared code. | |
659 | */ | |
64798845 | 660 | static s32 e1000_adjust_serdes_amplitude(struct e1000_hw *hw) |
1da177e4 | 661 | { |
120a5d0d JB |
662 | u16 eeprom_data; |
663 | s32 ret_val; | |
664 | ||
675ad473 | 665 | e_dbg("e1000_adjust_serdes_amplitude"); |
120a5d0d JB |
666 | |
667 | if (hw->media_type != e1000_media_type_internal_serdes) | |
668 | return E1000_SUCCESS; | |
669 | ||
670 | switch (hw->mac_type) { | |
671 | case e1000_82545_rev_3: | |
672 | case e1000_82546_rev_3: | |
673 | break; | |
674 | default: | |
675 | return E1000_SUCCESS; | |
676 | } | |
677 | ||
678 | ret_val = e1000_read_eeprom(hw, EEPROM_SERDES_AMPLITUDE, 1, | |
679 | &eeprom_data); | |
680 | if (ret_val) { | |
681 | return ret_val; | |
682 | } | |
683 | ||
684 | if (eeprom_data != EEPROM_RESERVED_WORD) { | |
685 | /* Adjust SERDES output amplitude only. */ | |
686 | eeprom_data &= EEPROM_SERDES_AMPLITUDE_MASK; | |
687 | ret_val = | |
688 | e1000_write_phy_reg(hw, M88E1000_PHY_EXT_CTRL, eeprom_data); | |
689 | if (ret_val) | |
690 | return ret_val; | |
691 | } | |
692 | ||
693 | return E1000_SUCCESS; | |
1da177e4 LT |
694 | } |
695 | ||
120a5d0d JB |
696 | /** |
697 | * e1000_setup_link - Configures flow control and link settings. | |
698 | * @hw: Struct containing variables accessed by shared code | |
1da177e4 | 699 | * |
120a5d0d | 700 | * Determines which flow control settings to use. Calls the appropriate media- |
1da177e4 LT |
701 | * specific link configuration function. Configures the flow control settings. |
702 | * Assuming the adapter has a valid link partner, a valid link should be | |
703 | * established. Assumes the hardware has previously been reset and the | |
704 | * transmitter and receiver are not enabled. | |
120a5d0d | 705 | */ |
64798845 | 706 | s32 e1000_setup_link(struct e1000_hw *hw) |
1da177e4 | 707 | { |
120a5d0d JB |
708 | u32 ctrl_ext; |
709 | s32 ret_val; | |
710 | u16 eeprom_data; | |
711 | ||
675ad473 | 712 | e_dbg("e1000_setup_link"); |
120a5d0d JB |
713 | |
714 | /* Read and store word 0x0F of the EEPROM. This word contains bits | |
715 | * that determine the hardware's default PAUSE (flow control) mode, | |
716 | * a bit that determines whether the HW defaults to enabling or | |
717 | * disabling auto-negotiation, and the direction of the | |
718 | * SW defined pins. If there is no SW over-ride of the flow | |
719 | * control setting, then the variable hw->fc will | |
720 | * be initialized based on a value in the EEPROM. | |
721 | */ | |
722 | if (hw->fc == E1000_FC_DEFAULT) { | |
723 | ret_val = e1000_read_eeprom(hw, EEPROM_INIT_CONTROL2_REG, | |
724 | 1, &eeprom_data); | |
725 | if (ret_val) { | |
675ad473 | 726 | e_dbg("EEPROM Read Error\n"); |
120a5d0d JB |
727 | return -E1000_ERR_EEPROM; |
728 | } | |
729 | if ((eeprom_data & EEPROM_WORD0F_PAUSE_MASK) == 0) | |
730 | hw->fc = E1000_FC_NONE; | |
731 | else if ((eeprom_data & EEPROM_WORD0F_PAUSE_MASK) == | |
732 | EEPROM_WORD0F_ASM_DIR) | |
733 | hw->fc = E1000_FC_TX_PAUSE; | |
734 | else | |
735 | hw->fc = E1000_FC_FULL; | |
736 | } | |
1da177e4 | 737 | |
120a5d0d JB |
738 | /* We want to save off the original Flow Control configuration just |
739 | * in case we get disconnected and then reconnected into a different | |
740 | * hub or switch with different Flow Control capabilities. | |
741 | */ | |
742 | if (hw->mac_type == e1000_82542_rev2_0) | |
743 | hw->fc &= (~E1000_FC_TX_PAUSE); | |
1da177e4 | 744 | |
120a5d0d JB |
745 | if ((hw->mac_type < e1000_82543) && (hw->report_tx_early == 1)) |
746 | hw->fc &= (~E1000_FC_RX_PAUSE); | |
1da177e4 | 747 | |
120a5d0d | 748 | hw->original_fc = hw->fc; |
1da177e4 | 749 | |
675ad473 | 750 | e_dbg("After fix-ups FlowControl is now = %x\n", hw->fc); |
1da177e4 | 751 | |
120a5d0d JB |
752 | /* Take the 4 bits from EEPROM word 0x0F that determine the initial |
753 | * polarity value for the SW controlled pins, and setup the | |
754 | * Extended Device Control reg with that info. | |
755 | * This is needed because one of the SW controlled pins is used for | |
756 | * signal detection. So this should be done before e1000_setup_pcs_link() | |
757 | * or e1000_phy_setup() is called. | |
758 | */ | |
759 | if (hw->mac_type == e1000_82543) { | |
760 | ret_val = e1000_read_eeprom(hw, EEPROM_INIT_CONTROL2_REG, | |
761 | 1, &eeprom_data); | |
762 | if (ret_val) { | |
675ad473 | 763 | e_dbg("EEPROM Read Error\n"); |
120a5d0d JB |
764 | return -E1000_ERR_EEPROM; |
765 | } | |
766 | ctrl_ext = ((eeprom_data & EEPROM_WORD0F_SWPDIO_EXT) << | |
767 | SWDPIO__EXT_SHIFT); | |
768 | ew32(CTRL_EXT, ctrl_ext); | |
769 | } | |
1da177e4 | 770 | |
120a5d0d JB |
771 | /* Call the necessary subroutine to configure the link. */ |
772 | ret_val = (hw->media_type == e1000_media_type_copper) ? | |
773 | e1000_setup_copper_link(hw) : e1000_setup_fiber_serdes_link(hw); | |
2d7edb92 | 774 | |
120a5d0d JB |
775 | /* Initialize the flow control address, type, and PAUSE timer |
776 | * registers to their default values. This is done even if flow | |
777 | * control is disabled, because it does not hurt anything to | |
778 | * initialize these registers. | |
779 | */ | |
675ad473 | 780 | e_dbg("Initializing the Flow Control address, type and timer regs\n"); |
2d7edb92 | 781 | |
120a5d0d JB |
782 | ew32(FCT, FLOW_CONTROL_TYPE); |
783 | ew32(FCAH, FLOW_CONTROL_ADDRESS_HIGH); | |
784 | ew32(FCAL, FLOW_CONTROL_ADDRESS_LOW); | |
2d7edb92 | 785 | |
120a5d0d | 786 | ew32(FCTTV, hw->fc_pause_time); |
1da177e4 | 787 | |
120a5d0d JB |
788 | /* Set the flow control receive threshold registers. Normally, |
789 | * these registers will be set to a default threshold that may be | |
790 | * adjusted later by the driver's runtime code. However, if the | |
791 | * ability to transmit pause frames in not enabled, then these | |
792 | * registers will be set to 0. | |
793 | */ | |
794 | if (!(hw->fc & E1000_FC_TX_PAUSE)) { | |
795 | ew32(FCRTL, 0); | |
796 | ew32(FCRTH, 0); | |
797 | } else { | |
798 | /* We need to set up the Receive Threshold high and low water marks | |
799 | * as well as (optionally) enabling the transmission of XON frames. | |
800 | */ | |
801 | if (hw->fc_send_xon) { | |
802 | ew32(FCRTL, (hw->fc_low_water | E1000_FCRTL_XONE)); | |
803 | ew32(FCRTH, hw->fc_high_water); | |
804 | } else { | |
805 | ew32(FCRTL, hw->fc_low_water); | |
806 | ew32(FCRTH, hw->fc_high_water); | |
807 | } | |
808 | } | |
809 | return ret_val; | |
1da177e4 LT |
810 | } |
811 | ||
120a5d0d JB |
812 | /** |
813 | * e1000_setup_fiber_serdes_link - prepare fiber or serdes link | |
814 | * @hw: Struct containing variables accessed by shared code | |
815 | * | |
816 | * Manipulates Physical Coding Sublayer functions in order to configure | |
817 | * link. Assumes the hardware has been previously reset and the transmitter | |
818 | * and receiver are not enabled. | |
819 | */ | |
820 | static s32 e1000_setup_fiber_serdes_link(struct e1000_hw *hw) | |
1da177e4 | 821 | { |
120a5d0d JB |
822 | u32 ctrl; |
823 | u32 status; | |
824 | u32 txcw = 0; | |
825 | u32 i; | |
826 | u32 signal = 0; | |
827 | s32 ret_val; | |
828 | ||
675ad473 | 829 | e_dbg("e1000_setup_fiber_serdes_link"); |
120a5d0d JB |
830 | |
831 | /* On adapters with a MAC newer than 82544, SWDP 1 will be | |
832 | * set when the optics detect a signal. On older adapters, it will be | |
833 | * cleared when there is a signal. This applies to fiber media only. | |
834 | * If we're on serdes media, adjust the output amplitude to value | |
835 | * set in the EEPROM. | |
836 | */ | |
837 | ctrl = er32(CTRL); | |
838 | if (hw->media_type == e1000_media_type_fiber) | |
839 | signal = (hw->mac_type > e1000_82544) ? E1000_CTRL_SWDPIN1 : 0; | |
840 | ||
841 | ret_val = e1000_adjust_serdes_amplitude(hw); | |
842 | if (ret_val) | |
843 | return ret_val; | |
844 | ||
845 | /* Take the link out of reset */ | |
846 | ctrl &= ~(E1000_CTRL_LRST); | |
847 | ||
848 | /* Adjust VCO speed to improve BER performance */ | |
849 | ret_val = e1000_set_vco_speed(hw); | |
850 | if (ret_val) | |
851 | return ret_val; | |
852 | ||
853 | e1000_config_collision_dist(hw); | |
854 | ||
855 | /* Check for a software override of the flow control settings, and setup | |
856 | * the device accordingly. If auto-negotiation is enabled, then software | |
857 | * will have to set the "PAUSE" bits to the correct value in the Tranmsit | |
858 | * Config Word Register (TXCW) and re-start auto-negotiation. However, if | |
859 | * auto-negotiation is disabled, then software will have to manually | |
860 | * configure the two flow control enable bits in the CTRL register. | |
861 | * | |
862 | * The possible values of the "fc" parameter are: | |
863 | * 0: Flow control is completely disabled | |
864 | * 1: Rx flow control is enabled (we can receive pause frames, but | |
865 | * not send pause frames). | |
866 | * 2: Tx flow control is enabled (we can send pause frames but we do | |
867 | * not support receiving pause frames). | |
868 | * 3: Both Rx and TX flow control (symmetric) are enabled. | |
869 | */ | |
870 | switch (hw->fc) { | |
871 | case E1000_FC_NONE: | |
872 | /* Flow control is completely disabled by a software over-ride. */ | |
873 | txcw = (E1000_TXCW_ANE | E1000_TXCW_FD); | |
874 | break; | |
875 | case E1000_FC_RX_PAUSE: | |
876 | /* RX Flow control is enabled and TX Flow control is disabled by a | |
877 | * software over-ride. Since there really isn't a way to advertise | |
878 | * that we are capable of RX Pause ONLY, we will advertise that we | |
879 | * support both symmetric and asymmetric RX PAUSE. Later, we will | |
880 | * disable the adapter's ability to send PAUSE frames. | |
881 | */ | |
882 | txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_PAUSE_MASK); | |
883 | break; | |
884 | case E1000_FC_TX_PAUSE: | |
885 | /* TX Flow control is enabled, and RX Flow control is disabled, by a | |
886 | * software over-ride. | |
887 | */ | |
888 | txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_ASM_DIR); | |
889 | break; | |
890 | case E1000_FC_FULL: | |
891 | /* Flow control (both RX and TX) is enabled by a software over-ride. */ | |
892 | txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_PAUSE_MASK); | |
893 | break; | |
894 | default: | |
675ad473 | 895 | e_dbg("Flow control param set incorrectly\n"); |
120a5d0d JB |
896 | return -E1000_ERR_CONFIG; |
897 | break; | |
898 | } | |
1da177e4 | 899 | |
120a5d0d JB |
900 | /* Since auto-negotiation is enabled, take the link out of reset (the link |
901 | * will be in reset, because we previously reset the chip). This will | |
902 | * restart auto-negotiation. If auto-negotiation is successful then the | |
903 | * link-up status bit will be set and the flow control enable bits (RFCE | |
904 | * and TFCE) will be set according to their negotiated value. | |
905 | */ | |
675ad473 | 906 | e_dbg("Auto-negotiation enabled\n"); |
0fadb059 | 907 | |
120a5d0d JB |
908 | ew32(TXCW, txcw); |
909 | ew32(CTRL, ctrl); | |
910 | E1000_WRITE_FLUSH(); | |
1da177e4 | 911 | |
120a5d0d JB |
912 | hw->txcw = txcw; |
913 | msleep(1); | |
1da177e4 | 914 | |
120a5d0d JB |
915 | /* If we have a signal (the cable is plugged in) then poll for a "Link-Up" |
916 | * indication in the Device Status Register. Time-out if a link isn't | |
917 | * seen in 500 milliseconds seconds (Auto-negotiation should complete in | |
918 | * less than 500 milliseconds even if the other end is doing it in SW). | |
919 | * For internal serdes, we just assume a signal is present, then poll. | |
920 | */ | |
921 | if (hw->media_type == e1000_media_type_internal_serdes || | |
922 | (er32(CTRL) & E1000_CTRL_SWDPIN1) == signal) { | |
675ad473 | 923 | e_dbg("Looking for Link\n"); |
120a5d0d JB |
924 | for (i = 0; i < (LINK_UP_TIMEOUT / 10); i++) { |
925 | msleep(10); | |
926 | status = er32(STATUS); | |
927 | if (status & E1000_STATUS_LU) | |
928 | break; | |
929 | } | |
930 | if (i == (LINK_UP_TIMEOUT / 10)) { | |
675ad473 | 931 | e_dbg("Never got a valid link from auto-neg!!!\n"); |
120a5d0d JB |
932 | hw->autoneg_failed = 1; |
933 | /* AutoNeg failed to achieve a link, so we'll call | |
934 | * e1000_check_for_link. This routine will force the link up if | |
935 | * we detect a signal. This will allow us to communicate with | |
936 | * non-autonegotiating link partners. | |
937 | */ | |
938 | ret_val = e1000_check_for_link(hw); | |
939 | if (ret_val) { | |
675ad473 | 940 | e_dbg("Error while checking for link\n"); |
120a5d0d JB |
941 | return ret_val; |
942 | } | |
943 | hw->autoneg_failed = 0; | |
944 | } else { | |
945 | hw->autoneg_failed = 0; | |
675ad473 | 946 | e_dbg("Valid Link Found\n"); |
120a5d0d JB |
947 | } |
948 | } else { | |
675ad473 | 949 | e_dbg("No Signal Detected\n"); |
120a5d0d JB |
950 | } |
951 | return E1000_SUCCESS; | |
1da177e4 LT |
952 | } |
953 | ||
120a5d0d JB |
954 | /** |
955 | * e1000_copper_link_preconfig - early configuration for copper | |
956 | * @hw: Struct containing variables accessed by shared code | |
957 | * | |
958 | * Make sure we have a valid PHY and change PHY mode before link setup. | |
959 | */ | |
960 | static s32 e1000_copper_link_preconfig(struct e1000_hw *hw) | |
1da177e4 | 961 | { |
120a5d0d JB |
962 | u32 ctrl; |
963 | s32 ret_val; | |
964 | u16 phy_data; | |
965 | ||
675ad473 | 966 | e_dbg("e1000_copper_link_preconfig"); |
120a5d0d JB |
967 | |
968 | ctrl = er32(CTRL); | |
969 | /* With 82543, we need to force speed and duplex on the MAC equal to what | |
970 | * the PHY speed and duplex configuration is. In addition, we need to | |
971 | * perform a hardware reset on the PHY to take it out of reset. | |
972 | */ | |
973 | if (hw->mac_type > e1000_82543) { | |
974 | ctrl |= E1000_CTRL_SLU; | |
975 | ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX); | |
976 | ew32(CTRL, ctrl); | |
977 | } else { | |
978 | ctrl |= | |
979 | (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX | E1000_CTRL_SLU); | |
980 | ew32(CTRL, ctrl); | |
981 | ret_val = e1000_phy_hw_reset(hw); | |
982 | if (ret_val) | |
983 | return ret_val; | |
984 | } | |
985 | ||
986 | /* Make sure we have a valid PHY */ | |
987 | ret_val = e1000_detect_gig_phy(hw); | |
988 | if (ret_val) { | |
675ad473 | 989 | e_dbg("Error, did not detect valid phy.\n"); |
120a5d0d JB |
990 | return ret_val; |
991 | } | |
675ad473 | 992 | e_dbg("Phy ID = %x\n", hw->phy_id); |
120a5d0d JB |
993 | |
994 | /* Set PHY to class A mode (if necessary) */ | |
995 | ret_val = e1000_set_phy_mode(hw); | |
996 | if (ret_val) | |
997 | return ret_val; | |
998 | ||
999 | if ((hw->mac_type == e1000_82545_rev_3) || | |
1000 | (hw->mac_type == e1000_82546_rev_3)) { | |
1001 | ret_val = | |
1002 | e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data); | |
1003 | phy_data |= 0x00000008; | |
1004 | ret_val = | |
1005 | e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data); | |
1006 | } | |
1007 | ||
1008 | if (hw->mac_type <= e1000_82543 || | |
1009 | hw->mac_type == e1000_82541 || hw->mac_type == e1000_82547 || | |
1010 | hw->mac_type == e1000_82541_rev_2 | |
1011 | || hw->mac_type == e1000_82547_rev_2) | |
1012 | hw->phy_reset_disable = false; | |
1013 | ||
1014 | return E1000_SUCCESS; | |
1da177e4 LT |
1015 | } |
1016 | ||
120a5d0d JB |
1017 | /** |
1018 | * e1000_copper_link_igp_setup - Copper link setup for e1000_phy_igp series. | |
1019 | * @hw: Struct containing variables accessed by shared code | |
1020 | */ | |
1021 | static s32 e1000_copper_link_igp_setup(struct e1000_hw *hw) | |
1022 | { | |
1023 | u32 led_ctrl; | |
1024 | s32 ret_val; | |
1025 | u16 phy_data; | |
1026 | ||
675ad473 | 1027 | e_dbg("e1000_copper_link_igp_setup"); |
120a5d0d JB |
1028 | |
1029 | if (hw->phy_reset_disable) | |
1030 | return E1000_SUCCESS; | |
1031 | ||
1032 | ret_val = e1000_phy_reset(hw); | |
1033 | if (ret_val) { | |
675ad473 | 1034 | e_dbg("Error Resetting the PHY\n"); |
120a5d0d JB |
1035 | return ret_val; |
1036 | } | |
1037 | ||
1038 | /* Wait 15ms for MAC to configure PHY from eeprom settings */ | |
1039 | msleep(15); | |
1040 | /* Configure activity LED after PHY reset */ | |
1041 | led_ctrl = er32(LEDCTL); | |
1042 | led_ctrl &= IGP_ACTIVITY_LED_MASK; | |
1043 | led_ctrl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE); | |
1044 | ew32(LEDCTL, led_ctrl); | |
1045 | ||
1046 | /* The NVM settings will configure LPLU in D3 for IGP2 and IGP3 PHYs */ | |
1047 | if (hw->phy_type == e1000_phy_igp) { | |
1048 | /* disable lplu d3 during driver init */ | |
1049 | ret_val = e1000_set_d3_lplu_state(hw, false); | |
1050 | if (ret_val) { | |
675ad473 | 1051 | e_dbg("Error Disabling LPLU D3\n"); |
120a5d0d JB |
1052 | return ret_val; |
1053 | } | |
1054 | } | |
1055 | ||
1056 | /* Configure mdi-mdix settings */ | |
1057 | ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, &phy_data); | |
1058 | if (ret_val) | |
1059 | return ret_val; | |
1060 | ||
1061 | if ((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_82547)) { | |
1062 | hw->dsp_config_state = e1000_dsp_config_disabled; | |
1063 | /* Force MDI for earlier revs of the IGP PHY */ | |
1064 | phy_data &= | |
1065 | ~(IGP01E1000_PSCR_AUTO_MDIX | | |
1066 | IGP01E1000_PSCR_FORCE_MDI_MDIX); | |
1067 | hw->mdix = 1; | |
1068 | ||
1069 | } else { | |
1070 | hw->dsp_config_state = e1000_dsp_config_enabled; | |
1071 | phy_data &= ~IGP01E1000_PSCR_AUTO_MDIX; | |
1072 | ||
1073 | switch (hw->mdix) { | |
1074 | case 1: | |
1075 | phy_data &= ~IGP01E1000_PSCR_FORCE_MDI_MDIX; | |
1076 | break; | |
1077 | case 2: | |
1078 | phy_data |= IGP01E1000_PSCR_FORCE_MDI_MDIX; | |
1079 | break; | |
1080 | case 0: | |
1081 | default: | |
1082 | phy_data |= IGP01E1000_PSCR_AUTO_MDIX; | |
1083 | break; | |
1084 | } | |
1085 | } | |
1086 | ret_val = e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, phy_data); | |
1087 | if (ret_val) | |
1088 | return ret_val; | |
1089 | ||
1090 | /* set auto-master slave resolution settings */ | |
1091 | if (hw->autoneg) { | |
1092 | e1000_ms_type phy_ms_setting = hw->master_slave; | |
1093 | ||
1094 | if (hw->ffe_config_state == e1000_ffe_config_active) | |
1095 | hw->ffe_config_state = e1000_ffe_config_enabled; | |
1096 | ||
1097 | if (hw->dsp_config_state == e1000_dsp_config_activated) | |
1098 | hw->dsp_config_state = e1000_dsp_config_enabled; | |
1099 | ||
1100 | /* when autonegotiation advertisement is only 1000Mbps then we | |
1101 | * should disable SmartSpeed and enable Auto MasterSlave | |
1102 | * resolution as hardware default. */ | |
1103 | if (hw->autoneg_advertised == ADVERTISE_1000_FULL) { | |
1104 | /* Disable SmartSpeed */ | |
1105 | ret_val = | |
1106 | e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, | |
1107 | &phy_data); | |
1108 | if (ret_val) | |
1109 | return ret_val; | |
1110 | phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED; | |
1111 | ret_val = | |
1112 | e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, | |
1113 | phy_data); | |
1114 | if (ret_val) | |
1115 | return ret_val; | |
1116 | /* Set auto Master/Slave resolution process */ | |
1117 | ret_val = | |
1118 | e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_data); | |
1119 | if (ret_val) | |
1120 | return ret_val; | |
1121 | phy_data &= ~CR_1000T_MS_ENABLE; | |
1122 | ret_val = | |
1123 | e1000_write_phy_reg(hw, PHY_1000T_CTRL, phy_data); | |
1124 | if (ret_val) | |
1125 | return ret_val; | |
1126 | } | |
1127 | ||
1128 | ret_val = e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_data); | |
1129 | if (ret_val) | |
1130 | return ret_val; | |
1131 | ||
1132 | /* load defaults for future use */ | |
1133 | hw->original_master_slave = (phy_data & CR_1000T_MS_ENABLE) ? | |
1134 | ((phy_data & CR_1000T_MS_VALUE) ? | |
1135 | e1000_ms_force_master : | |
1136 | e1000_ms_force_slave) : e1000_ms_auto; | |
1137 | ||
1138 | switch (phy_ms_setting) { | |
1139 | case e1000_ms_force_master: | |
1140 | phy_data |= (CR_1000T_MS_ENABLE | CR_1000T_MS_VALUE); | |
1141 | break; | |
1142 | case e1000_ms_force_slave: | |
1143 | phy_data |= CR_1000T_MS_ENABLE; | |
1144 | phy_data &= ~(CR_1000T_MS_VALUE); | |
1145 | break; | |
1146 | case e1000_ms_auto: | |
1147 | phy_data &= ~CR_1000T_MS_ENABLE; | |
1148 | default: | |
1149 | break; | |
1150 | } | |
1151 | ret_val = e1000_write_phy_reg(hw, PHY_1000T_CTRL, phy_data); | |
1152 | if (ret_val) | |
1153 | return ret_val; | |
1154 | } | |
1155 | ||
1156 | return E1000_SUCCESS; | |
1157 | } | |
1158 | ||
1159 | /** | |
1160 | * e1000_copper_link_mgp_setup - Copper link setup for e1000_phy_m88 series. | |
1161 | * @hw: Struct containing variables accessed by shared code | |
1162 | */ | |
1163 | static s32 e1000_copper_link_mgp_setup(struct e1000_hw *hw) | |
1164 | { | |
1165 | s32 ret_val; | |
1166 | u16 phy_data; | |
1167 | ||
675ad473 | 1168 | e_dbg("e1000_copper_link_mgp_setup"); |
120a5d0d JB |
1169 | |
1170 | if (hw->phy_reset_disable) | |
1171 | return E1000_SUCCESS; | |
1172 | ||
1173 | /* Enable CRS on TX. This must be set for half-duplex operation. */ | |
1174 | ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data); | |
1175 | if (ret_val) | |
1176 | return ret_val; | |
1177 | ||
1178 | phy_data |= M88E1000_PSCR_ASSERT_CRS_ON_TX; | |
1179 | ||
1180 | /* Options: | |
1181 | * MDI/MDI-X = 0 (default) | |
1182 | * 0 - Auto for all speeds | |
1183 | * 1 - MDI mode | |
1184 | * 2 - MDI-X mode | |
1185 | * 3 - Auto for 1000Base-T only (MDI-X for 10/100Base-T modes) | |
1186 | */ | |
1187 | phy_data &= ~M88E1000_PSCR_AUTO_X_MODE; | |
1188 | ||
1189 | switch (hw->mdix) { | |
1190 | case 1: | |
1191 | phy_data |= M88E1000_PSCR_MDI_MANUAL_MODE; | |
1192 | break; | |
1193 | case 2: | |
1194 | phy_data |= M88E1000_PSCR_MDIX_MANUAL_MODE; | |
1195 | break; | |
1196 | case 3: | |
1197 | phy_data |= M88E1000_PSCR_AUTO_X_1000T; | |
1198 | break; | |
1199 | case 0: | |
1200 | default: | |
1201 | phy_data |= M88E1000_PSCR_AUTO_X_MODE; | |
1202 | break; | |
1203 | } | |
1204 | ||
1205 | /* Options: | |
1206 | * disable_polarity_correction = 0 (default) | |
1207 | * Automatic Correction for Reversed Cable Polarity | |
1208 | * 0 - Disabled | |
1209 | * 1 - Enabled | |
1210 | */ | |
1211 | phy_data &= ~M88E1000_PSCR_POLARITY_REVERSAL; | |
1212 | if (hw->disable_polarity_correction == 1) | |
1213 | phy_data |= M88E1000_PSCR_POLARITY_REVERSAL; | |
1214 | ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data); | |
1215 | if (ret_val) | |
1216 | return ret_val; | |
1217 | ||
1218 | if (hw->phy_revision < M88E1011_I_REV_4) { | |
1219 | /* Force TX_CLK in the Extended PHY Specific Control Register | |
1220 | * to 25MHz clock. | |
1221 | */ | |
1222 | ret_val = | |
1223 | e1000_read_phy_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL, | |
1224 | &phy_data); | |
1225 | if (ret_val) | |
1226 | return ret_val; | |
1227 | ||
1228 | phy_data |= M88E1000_EPSCR_TX_CLK_25; | |
1229 | ||
1230 | if ((hw->phy_revision == E1000_REVISION_2) && | |
1231 | (hw->phy_id == M88E1111_I_PHY_ID)) { | |
1232 | /* Vidalia Phy, set the downshift counter to 5x */ | |
1233 | phy_data &= ~(M88EC018_EPSCR_DOWNSHIFT_COUNTER_MASK); | |
1234 | phy_data |= M88EC018_EPSCR_DOWNSHIFT_COUNTER_5X; | |
1235 | ret_val = e1000_write_phy_reg(hw, | |
1236 | M88E1000_EXT_PHY_SPEC_CTRL, | |
1237 | phy_data); | |
1238 | if (ret_val) | |
1239 | return ret_val; | |
1240 | } else { | |
1241 | /* Configure Master and Slave downshift values */ | |
1242 | phy_data &= ~(M88E1000_EPSCR_MASTER_DOWNSHIFT_MASK | | |
1243 | M88E1000_EPSCR_SLAVE_DOWNSHIFT_MASK); | |
1244 | phy_data |= (M88E1000_EPSCR_MASTER_DOWNSHIFT_1X | | |
1245 | M88E1000_EPSCR_SLAVE_DOWNSHIFT_1X); | |
1246 | ret_val = e1000_write_phy_reg(hw, | |
1247 | M88E1000_EXT_PHY_SPEC_CTRL, | |
1248 | phy_data); | |
1249 | if (ret_val) | |
1250 | return ret_val; | |
1251 | } | |
1252 | } | |
1253 | ||
1254 | /* SW Reset the PHY so all changes take effect */ | |
1255 | ret_val = e1000_phy_reset(hw); | |
1256 | if (ret_val) { | |
675ad473 | 1257 | e_dbg("Error Resetting the PHY\n"); |
120a5d0d JB |
1258 | return ret_val; |
1259 | } | |
1260 | ||
1261 | return E1000_SUCCESS; | |
1262 | } | |
1263 | ||
1264 | /** | |
1265 | * e1000_copper_link_autoneg - setup auto-neg | |
1266 | * @hw: Struct containing variables accessed by shared code | |
1da177e4 | 1267 | * |
120a5d0d JB |
1268 | * Setup auto-negotiation and flow control advertisements, |
1269 | * and then perform auto-negotiation. | |
1270 | */ | |
1271 | static s32 e1000_copper_link_autoneg(struct e1000_hw *hw) | |
1272 | { | |
1273 | s32 ret_val; | |
1274 | u16 phy_data; | |
1275 | ||
675ad473 | 1276 | e_dbg("e1000_copper_link_autoneg"); |
120a5d0d JB |
1277 | |
1278 | /* Perform some bounds checking on the hw->autoneg_advertised | |
1279 | * parameter. If this variable is zero, then set it to the default. | |
1280 | */ | |
1281 | hw->autoneg_advertised &= AUTONEG_ADVERTISE_SPEED_DEFAULT; | |
1282 | ||
1283 | /* If autoneg_advertised is zero, we assume it was not defaulted | |
1284 | * by the calling code so we set to advertise full capability. | |
1285 | */ | |
1286 | if (hw->autoneg_advertised == 0) | |
1287 | hw->autoneg_advertised = AUTONEG_ADVERTISE_SPEED_DEFAULT; | |
1288 | ||
675ad473 | 1289 | e_dbg("Reconfiguring auto-neg advertisement params\n"); |
120a5d0d JB |
1290 | ret_val = e1000_phy_setup_autoneg(hw); |
1291 | if (ret_val) { | |
675ad473 | 1292 | e_dbg("Error Setting up Auto-Negotiation\n"); |
120a5d0d JB |
1293 | return ret_val; |
1294 | } | |
675ad473 | 1295 | e_dbg("Restarting Auto-Neg\n"); |
120a5d0d JB |
1296 | |
1297 | /* Restart auto-negotiation by setting the Auto Neg Enable bit and | |
1298 | * the Auto Neg Restart bit in the PHY control register. | |
1299 | */ | |
1300 | ret_val = e1000_read_phy_reg(hw, PHY_CTRL, &phy_data); | |
1301 | if (ret_val) | |
1302 | return ret_val; | |
1303 | ||
1304 | phy_data |= (MII_CR_AUTO_NEG_EN | MII_CR_RESTART_AUTO_NEG); | |
1305 | ret_val = e1000_write_phy_reg(hw, PHY_CTRL, phy_data); | |
1306 | if (ret_val) | |
1307 | return ret_val; | |
1308 | ||
1309 | /* Does the user want to wait for Auto-Neg to complete here, or | |
1310 | * check at a later time (for example, callback routine). | |
1311 | */ | |
1312 | if (hw->wait_autoneg_complete) { | |
1313 | ret_val = e1000_wait_autoneg(hw); | |
1314 | if (ret_val) { | |
675ad473 | 1315 | e_dbg |
120a5d0d JB |
1316 | ("Error while waiting for autoneg to complete\n"); |
1317 | return ret_val; | |
1318 | } | |
1319 | } | |
1320 | ||
1321 | hw->get_link_status = true; | |
1322 | ||
1323 | return E1000_SUCCESS; | |
1324 | } | |
1325 | ||
1326 | /** | |
1327 | * e1000_copper_link_postconfig - post link setup | |
1328 | * @hw: Struct containing variables accessed by shared code | |
1da177e4 | 1329 | * |
120a5d0d JB |
1330 | * Config the MAC and the PHY after link is up. |
1331 | * 1) Set up the MAC to the current PHY speed/duplex | |
1332 | * if we are on 82543. If we | |
1333 | * are on newer silicon, we only need to configure | |
1334 | * collision distance in the Transmit Control Register. | |
1335 | * 2) Set up flow control on the MAC to that established with | |
1336 | * the link partner. | |
1337 | * 3) Config DSP to improve Gigabit link quality for some PHY revisions. | |
1338 | */ | |
1339 | static s32 e1000_copper_link_postconfig(struct e1000_hw *hw) | |
1340 | { | |
1341 | s32 ret_val; | |
675ad473 | 1342 | e_dbg("e1000_copper_link_postconfig"); |
120a5d0d JB |
1343 | |
1344 | if (hw->mac_type >= e1000_82544) { | |
1345 | e1000_config_collision_dist(hw); | |
1346 | } else { | |
1347 | ret_val = e1000_config_mac_to_phy(hw); | |
1348 | if (ret_val) { | |
675ad473 | 1349 | e_dbg("Error configuring MAC to PHY settings\n"); |
120a5d0d JB |
1350 | return ret_val; |
1351 | } | |
1352 | } | |
1353 | ret_val = e1000_config_fc_after_link_up(hw); | |
1354 | if (ret_val) { | |
675ad473 | 1355 | e_dbg("Error Configuring Flow Control\n"); |
120a5d0d JB |
1356 | return ret_val; |
1357 | } | |
1358 | ||
1359 | /* Config DSP to improve Giga link quality */ | |
1360 | if (hw->phy_type == e1000_phy_igp) { | |
1361 | ret_val = e1000_config_dsp_after_link_change(hw, true); | |
1362 | if (ret_val) { | |
675ad473 | 1363 | e_dbg("Error Configuring DSP after link up\n"); |
120a5d0d JB |
1364 | return ret_val; |
1365 | } | |
1366 | } | |
1367 | ||
1368 | return E1000_SUCCESS; | |
1369 | } | |
1370 | ||
1371 | /** | |
1372 | * e1000_setup_copper_link - phy/speed/duplex setting | |
1373 | * @hw: Struct containing variables accessed by shared code | |
1374 | * | |
1375 | * Detects which PHY is present and sets up the speed and duplex | |
1376 | */ | |
1377 | static s32 e1000_setup_copper_link(struct e1000_hw *hw) | |
1378 | { | |
1379 | s32 ret_val; | |
1380 | u16 i; | |
1381 | u16 phy_data; | |
1382 | ||
675ad473 | 1383 | e_dbg("e1000_setup_copper_link"); |
120a5d0d JB |
1384 | |
1385 | /* Check if it is a valid PHY and set PHY mode if necessary. */ | |
1386 | ret_val = e1000_copper_link_preconfig(hw); | |
1387 | if (ret_val) | |
1388 | return ret_val; | |
1389 | ||
1390 | if (hw->phy_type == e1000_phy_igp) { | |
1391 | ret_val = e1000_copper_link_igp_setup(hw); | |
1392 | if (ret_val) | |
1393 | return ret_val; | |
1394 | } else if (hw->phy_type == e1000_phy_m88) { | |
1395 | ret_val = e1000_copper_link_mgp_setup(hw); | |
1396 | if (ret_val) | |
1397 | return ret_val; | |
1398 | } | |
1399 | ||
1400 | if (hw->autoneg) { | |
1401 | /* Setup autoneg and flow control advertisement | |
1402 | * and perform autonegotiation */ | |
1403 | ret_val = e1000_copper_link_autoneg(hw); | |
1404 | if (ret_val) | |
1405 | return ret_val; | |
1406 | } else { | |
1407 | /* PHY will be set to 10H, 10F, 100H,or 100F | |
1408 | * depending on value from forced_speed_duplex. */ | |
675ad473 | 1409 | e_dbg("Forcing speed and duplex\n"); |
120a5d0d JB |
1410 | ret_val = e1000_phy_force_speed_duplex(hw); |
1411 | if (ret_val) { | |
675ad473 | 1412 | e_dbg("Error Forcing Speed and Duplex\n"); |
120a5d0d JB |
1413 | return ret_val; |
1414 | } | |
1415 | } | |
1416 | ||
1417 | /* Check link status. Wait up to 100 microseconds for link to become | |
1418 | * valid. | |
1419 | */ | |
1420 | for (i = 0; i < 10; i++) { | |
1421 | ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data); | |
1422 | if (ret_val) | |
1423 | return ret_val; | |
1424 | ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data); | |
1425 | if (ret_val) | |
1426 | return ret_val; | |
1427 | ||
1428 | if (phy_data & MII_SR_LINK_STATUS) { | |
1429 | /* Config the MAC and PHY after link is up */ | |
1430 | ret_val = e1000_copper_link_postconfig(hw); | |
1431 | if (ret_val) | |
1432 | return ret_val; | |
1433 | ||
675ad473 | 1434 | e_dbg("Valid link established!!!\n"); |
120a5d0d JB |
1435 | return E1000_SUCCESS; |
1436 | } | |
1437 | udelay(10); | |
1438 | } | |
1439 | ||
675ad473 | 1440 | e_dbg("Unable to establish link!!!\n"); |
120a5d0d JB |
1441 | return E1000_SUCCESS; |
1442 | } | |
1443 | ||
1444 | /** | |
1445 | * e1000_phy_setup_autoneg - phy settings | |
1446 | * @hw: Struct containing variables accessed by shared code | |
1447 | * | |
1448 | * Configures PHY autoneg and flow control advertisement settings | |
1449 | */ | |
1450 | s32 e1000_phy_setup_autoneg(struct e1000_hw *hw) | |
1451 | { | |
1452 | s32 ret_val; | |
1453 | u16 mii_autoneg_adv_reg; | |
1454 | u16 mii_1000t_ctrl_reg; | |
1455 | ||
675ad473 | 1456 | e_dbg("e1000_phy_setup_autoneg"); |
120a5d0d JB |
1457 | |
1458 | /* Read the MII Auto-Neg Advertisement Register (Address 4). */ | |
1459 | ret_val = e1000_read_phy_reg(hw, PHY_AUTONEG_ADV, &mii_autoneg_adv_reg); | |
1460 | if (ret_val) | |
1461 | return ret_val; | |
1462 | ||
1463 | /* Read the MII 1000Base-T Control Register (Address 9). */ | |
1464 | ret_val = | |
1465 | e1000_read_phy_reg(hw, PHY_1000T_CTRL, &mii_1000t_ctrl_reg); | |
1466 | if (ret_val) | |
1467 | return ret_val; | |
1468 | ||
1469 | /* Need to parse both autoneg_advertised and fc and set up | |
1470 | * the appropriate PHY registers. First we will parse for | |
1471 | * autoneg_advertised software override. Since we can advertise | |
1472 | * a plethora of combinations, we need to check each bit | |
1473 | * individually. | |
1474 | */ | |
1475 | ||
1476 | /* First we clear all the 10/100 mb speed bits in the Auto-Neg | |
1477 | * Advertisement Register (Address 4) and the 1000 mb speed bits in | |
1478 | * the 1000Base-T Control Register (Address 9). | |
1479 | */ | |
1480 | mii_autoneg_adv_reg &= ~REG4_SPEED_MASK; | |
1481 | mii_1000t_ctrl_reg &= ~REG9_SPEED_MASK; | |
1482 | ||
675ad473 | 1483 | e_dbg("autoneg_advertised %x\n", hw->autoneg_advertised); |
120a5d0d JB |
1484 | |
1485 | /* Do we want to advertise 10 Mb Half Duplex? */ | |
1486 | if (hw->autoneg_advertised & ADVERTISE_10_HALF) { | |
675ad473 | 1487 | e_dbg("Advertise 10mb Half duplex\n"); |
120a5d0d JB |
1488 | mii_autoneg_adv_reg |= NWAY_AR_10T_HD_CAPS; |
1489 | } | |
1490 | ||
1491 | /* Do we want to advertise 10 Mb Full Duplex? */ | |
1492 | if (hw->autoneg_advertised & ADVERTISE_10_FULL) { | |
675ad473 | 1493 | e_dbg("Advertise 10mb Full duplex\n"); |
120a5d0d JB |
1494 | mii_autoneg_adv_reg |= NWAY_AR_10T_FD_CAPS; |
1495 | } | |
1496 | ||
1497 | /* Do we want to advertise 100 Mb Half Duplex? */ | |
1498 | if (hw->autoneg_advertised & ADVERTISE_100_HALF) { | |
675ad473 | 1499 | e_dbg("Advertise 100mb Half duplex\n"); |
120a5d0d JB |
1500 | mii_autoneg_adv_reg |= NWAY_AR_100TX_HD_CAPS; |
1501 | } | |
1502 | ||
1503 | /* Do we want to advertise 100 Mb Full Duplex? */ | |
1504 | if (hw->autoneg_advertised & ADVERTISE_100_FULL) { | |
675ad473 | 1505 | e_dbg("Advertise 100mb Full duplex\n"); |
120a5d0d JB |
1506 | mii_autoneg_adv_reg |= NWAY_AR_100TX_FD_CAPS; |
1507 | } | |
1508 | ||
1509 | /* We do not allow the Phy to advertise 1000 Mb Half Duplex */ | |
1510 | if (hw->autoneg_advertised & ADVERTISE_1000_HALF) { | |
675ad473 | 1511 | e_dbg |
120a5d0d JB |
1512 | ("Advertise 1000mb Half duplex requested, request denied!\n"); |
1513 | } | |
1514 | ||
1515 | /* Do we want to advertise 1000 Mb Full Duplex? */ | |
1516 | if (hw->autoneg_advertised & ADVERTISE_1000_FULL) { | |
675ad473 | 1517 | e_dbg("Advertise 1000mb Full duplex\n"); |
120a5d0d JB |
1518 | mii_1000t_ctrl_reg |= CR_1000T_FD_CAPS; |
1519 | } | |
1520 | ||
1521 | /* Check for a software override of the flow control settings, and | |
1522 | * setup the PHY advertisement registers accordingly. If | |
1523 | * auto-negotiation is enabled, then software will have to set the | |
1524 | * "PAUSE" bits to the correct value in the Auto-Negotiation | |
1525 | * Advertisement Register (PHY_AUTONEG_ADV) and re-start auto-negotiation. | |
1526 | * | |
1527 | * The possible values of the "fc" parameter are: | |
1528 | * 0: Flow control is completely disabled | |
1529 | * 1: Rx flow control is enabled (we can receive pause frames | |
1530 | * but not send pause frames). | |
1531 | * 2: Tx flow control is enabled (we can send pause frames | |
1532 | * but we do not support receiving pause frames). | |
1533 | * 3: Both Rx and TX flow control (symmetric) are enabled. | |
1534 | * other: No software override. The flow control configuration | |
1535 | * in the EEPROM is used. | |
1536 | */ | |
1537 | switch (hw->fc) { | |
1538 | case E1000_FC_NONE: /* 0 */ | |
1539 | /* Flow control (RX & TX) is completely disabled by a | |
1540 | * software over-ride. | |
1541 | */ | |
1542 | mii_autoneg_adv_reg &= ~(NWAY_AR_ASM_DIR | NWAY_AR_PAUSE); | |
1543 | break; | |
1544 | case E1000_FC_RX_PAUSE: /* 1 */ | |
1545 | /* RX Flow control is enabled, and TX Flow control is | |
1546 | * disabled, by a software over-ride. | |
1547 | */ | |
1548 | /* Since there really isn't a way to advertise that we are | |
1549 | * capable of RX Pause ONLY, we will advertise that we | |
1550 | * support both symmetric and asymmetric RX PAUSE. Later | |
1551 | * (in e1000_config_fc_after_link_up) we will disable the | |
1552 | *hw's ability to send PAUSE frames. | |
1553 | */ | |
1554 | mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE); | |
1555 | break; | |
1556 | case E1000_FC_TX_PAUSE: /* 2 */ | |
1557 | /* TX Flow control is enabled, and RX Flow control is | |
1558 | * disabled, by a software over-ride. | |
1559 | */ | |
1560 | mii_autoneg_adv_reg |= NWAY_AR_ASM_DIR; | |
1561 | mii_autoneg_adv_reg &= ~NWAY_AR_PAUSE; | |
1562 | break; | |
1563 | case E1000_FC_FULL: /* 3 */ | |
1564 | /* Flow control (both RX and TX) is enabled by a software | |
1565 | * over-ride. | |
1566 | */ | |
1567 | mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE); | |
1568 | break; | |
1569 | default: | |
675ad473 | 1570 | e_dbg("Flow control param set incorrectly\n"); |
120a5d0d JB |
1571 | return -E1000_ERR_CONFIG; |
1572 | } | |
1573 | ||
1574 | ret_val = e1000_write_phy_reg(hw, PHY_AUTONEG_ADV, mii_autoneg_adv_reg); | |
1575 | if (ret_val) | |
1576 | return ret_val; | |
1577 | ||
675ad473 | 1578 | e_dbg("Auto-Neg Advertising %x\n", mii_autoneg_adv_reg); |
120a5d0d JB |
1579 | |
1580 | ret_val = e1000_write_phy_reg(hw, PHY_1000T_CTRL, mii_1000t_ctrl_reg); | |
1581 | if (ret_val) | |
1582 | return ret_val; | |
1583 | ||
1584 | return E1000_SUCCESS; | |
1585 | } | |
1586 | ||
1587 | /** | |
1588 | * e1000_phy_force_speed_duplex - force link settings | |
1589 | * @hw: Struct containing variables accessed by shared code | |
1590 | * | |
1591 | * Force PHY speed and duplex settings to hw->forced_speed_duplex | |
1592 | */ | |
1593 | static s32 e1000_phy_force_speed_duplex(struct e1000_hw *hw) | |
1594 | { | |
1595 | u32 ctrl; | |
1596 | s32 ret_val; | |
1597 | u16 mii_ctrl_reg; | |
1598 | u16 mii_status_reg; | |
1599 | u16 phy_data; | |
1600 | u16 i; | |
1601 | ||
675ad473 | 1602 | e_dbg("e1000_phy_force_speed_duplex"); |
120a5d0d JB |
1603 | |
1604 | /* Turn off Flow control if we are forcing speed and duplex. */ | |
1605 | hw->fc = E1000_FC_NONE; | |
1606 | ||
675ad473 | 1607 | e_dbg("hw->fc = %d\n", hw->fc); |
120a5d0d JB |
1608 | |
1609 | /* Read the Device Control Register. */ | |
1610 | ctrl = er32(CTRL); | |
1611 | ||
1612 | /* Set the bits to Force Speed and Duplex in the Device Ctrl Reg. */ | |
1613 | ctrl |= (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX); | |
1614 | ctrl &= ~(DEVICE_SPEED_MASK); | |
1615 | ||
1616 | /* Clear the Auto Speed Detect Enable bit. */ | |
1617 | ctrl &= ~E1000_CTRL_ASDE; | |
1618 | ||
1619 | /* Read the MII Control Register. */ | |
1620 | ret_val = e1000_read_phy_reg(hw, PHY_CTRL, &mii_ctrl_reg); | |
1621 | if (ret_val) | |
1622 | return ret_val; | |
1623 | ||
1624 | /* We need to disable autoneg in order to force link and duplex. */ | |
1625 | ||
1626 | mii_ctrl_reg &= ~MII_CR_AUTO_NEG_EN; | |
1627 | ||
1628 | /* Are we forcing Full or Half Duplex? */ | |
1629 | if (hw->forced_speed_duplex == e1000_100_full || | |
1630 | hw->forced_speed_duplex == e1000_10_full) { | |
1631 | /* We want to force full duplex so we SET the full duplex bits in the | |
1632 | * Device and MII Control Registers. | |
1633 | */ | |
1634 | ctrl |= E1000_CTRL_FD; | |
1635 | mii_ctrl_reg |= MII_CR_FULL_DUPLEX; | |
675ad473 | 1636 | e_dbg("Full Duplex\n"); |
120a5d0d JB |
1637 | } else { |
1638 | /* We want to force half duplex so we CLEAR the full duplex bits in | |
1639 | * the Device and MII Control Registers. | |
1640 | */ | |
1641 | ctrl &= ~E1000_CTRL_FD; | |
1642 | mii_ctrl_reg &= ~MII_CR_FULL_DUPLEX; | |
675ad473 | 1643 | e_dbg("Half Duplex\n"); |
120a5d0d JB |
1644 | } |
1645 | ||
1646 | /* Are we forcing 100Mbps??? */ | |
1647 | if (hw->forced_speed_duplex == e1000_100_full || | |
1648 | hw->forced_speed_duplex == e1000_100_half) { | |
1649 | /* Set the 100Mb bit and turn off the 1000Mb and 10Mb bits. */ | |
1650 | ctrl |= E1000_CTRL_SPD_100; | |
1651 | mii_ctrl_reg |= MII_CR_SPEED_100; | |
1652 | mii_ctrl_reg &= ~(MII_CR_SPEED_1000 | MII_CR_SPEED_10); | |
675ad473 | 1653 | e_dbg("Forcing 100mb "); |
120a5d0d JB |
1654 | } else { |
1655 | /* Set the 10Mb bit and turn off the 1000Mb and 100Mb bits. */ | |
1656 | ctrl &= ~(E1000_CTRL_SPD_1000 | E1000_CTRL_SPD_100); | |
1657 | mii_ctrl_reg |= MII_CR_SPEED_10; | |
1658 | mii_ctrl_reg &= ~(MII_CR_SPEED_1000 | MII_CR_SPEED_100); | |
675ad473 | 1659 | e_dbg("Forcing 10mb "); |
120a5d0d JB |
1660 | } |
1661 | ||
1662 | e1000_config_collision_dist(hw); | |
1663 | ||
1664 | /* Write the configured values back to the Device Control Reg. */ | |
1665 | ew32(CTRL, ctrl); | |
1666 | ||
1667 | if (hw->phy_type == e1000_phy_m88) { | |
1668 | ret_val = | |
1669 | e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data); | |
1670 | if (ret_val) | |
1671 | return ret_val; | |
1672 | ||
1673 | /* Clear Auto-Crossover to force MDI manually. M88E1000 requires MDI | |
1674 | * forced whenever speed are duplex are forced. | |
1675 | */ | |
1676 | phy_data &= ~M88E1000_PSCR_AUTO_X_MODE; | |
1677 | ret_val = | |
1678 | e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data); | |
1679 | if (ret_val) | |
1680 | return ret_val; | |
1681 | ||
675ad473 | 1682 | e_dbg("M88E1000 PSCR: %x\n", phy_data); |
120a5d0d JB |
1683 | |
1684 | /* Need to reset the PHY or these changes will be ignored */ | |
1685 | mii_ctrl_reg |= MII_CR_RESET; | |
1686 | ||
1687 | /* Disable MDI-X support for 10/100 */ | |
1688 | } else { | |
1689 | /* Clear Auto-Crossover to force MDI manually. IGP requires MDI | |
1690 | * forced whenever speed or duplex are forced. | |
1691 | */ | |
1692 | ret_val = | |
1693 | e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, &phy_data); | |
1694 | if (ret_val) | |
1695 | return ret_val; | |
1696 | ||
1697 | phy_data &= ~IGP01E1000_PSCR_AUTO_MDIX; | |
1698 | phy_data &= ~IGP01E1000_PSCR_FORCE_MDI_MDIX; | |
1699 | ||
1700 | ret_val = | |
1701 | e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, phy_data); | |
1702 | if (ret_val) | |
1703 | return ret_val; | |
1704 | } | |
1705 | ||
1706 | /* Write back the modified PHY MII control register. */ | |
1707 | ret_val = e1000_write_phy_reg(hw, PHY_CTRL, mii_ctrl_reg); | |
1708 | if (ret_val) | |
1709 | return ret_val; | |
1710 | ||
1711 | udelay(1); | |
1712 | ||
1713 | /* The wait_autoneg_complete flag may be a little misleading here. | |
1714 | * Since we are forcing speed and duplex, Auto-Neg is not enabled. | |
1715 | * But we do want to delay for a period while forcing only so we | |
1716 | * don't generate false No Link messages. So we will wait here | |
1717 | * only if the user has set wait_autoneg_complete to 1, which is | |
1718 | * the default. | |
1719 | */ | |
1720 | if (hw->wait_autoneg_complete) { | |
1721 | /* We will wait for autoneg to complete. */ | |
675ad473 | 1722 | e_dbg("Waiting for forced speed/duplex link.\n"); |
120a5d0d JB |
1723 | mii_status_reg = 0; |
1724 | ||
1725 | /* We will wait for autoneg to complete or 4.5 seconds to expire. */ | |
1726 | for (i = PHY_FORCE_TIME; i > 0; i--) { | |
1727 | /* Read the MII Status Register and wait for Auto-Neg Complete bit | |
1728 | * to be set. | |
1729 | */ | |
1730 | ret_val = | |
1731 | e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg); | |
1732 | if (ret_val) | |
1733 | return ret_val; | |
1734 | ||
1735 | ret_val = | |
1736 | e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg); | |
1737 | if (ret_val) | |
1738 | return ret_val; | |
1739 | ||
1740 | if (mii_status_reg & MII_SR_LINK_STATUS) | |
1741 | break; | |
1742 | msleep(100); | |
1743 | } | |
1744 | if ((i == 0) && (hw->phy_type == e1000_phy_m88)) { | |
1745 | /* We didn't get link. Reset the DSP and wait again for link. */ | |
1746 | ret_val = e1000_phy_reset_dsp(hw); | |
1747 | if (ret_val) { | |
675ad473 | 1748 | e_dbg("Error Resetting PHY DSP\n"); |
120a5d0d JB |
1749 | return ret_val; |
1750 | } | |
1751 | } | |
1752 | /* This loop will early-out if the link condition has been met. */ | |
1753 | for (i = PHY_FORCE_TIME; i > 0; i--) { | |
1754 | if (mii_status_reg & MII_SR_LINK_STATUS) | |
1755 | break; | |
1756 | msleep(100); | |
1757 | /* Read the MII Status Register and wait for Auto-Neg Complete bit | |
1758 | * to be set. | |
1759 | */ | |
1760 | ret_val = | |
1761 | e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg); | |
1762 | if (ret_val) | |
1763 | return ret_val; | |
1764 | ||
1765 | ret_val = | |
1766 | e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg); | |
1767 | if (ret_val) | |
1768 | return ret_val; | |
1769 | } | |
1770 | } | |
1771 | ||
1772 | if (hw->phy_type == e1000_phy_m88) { | |
1773 | /* Because we reset the PHY above, we need to re-force TX_CLK in the | |
1774 | * Extended PHY Specific Control Register to 25MHz clock. This value | |
1775 | * defaults back to a 2.5MHz clock when the PHY is reset. | |
1776 | */ | |
1777 | ret_val = | |
1778 | e1000_read_phy_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL, | |
1779 | &phy_data); | |
1780 | if (ret_val) | |
1781 | return ret_val; | |
1782 | ||
1783 | phy_data |= M88E1000_EPSCR_TX_CLK_25; | |
1784 | ret_val = | |
1785 | e1000_write_phy_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL, | |
1786 | phy_data); | |
1787 | if (ret_val) | |
1788 | return ret_val; | |
1789 | ||
1790 | /* In addition, because of the s/w reset above, we need to enable CRS on | |
1791 | * TX. This must be set for both full and half duplex operation. | |
1792 | */ | |
1793 | ret_val = | |
1794 | e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data); | |
1795 | if (ret_val) | |
1796 | return ret_val; | |
1797 | ||
1798 | phy_data |= M88E1000_PSCR_ASSERT_CRS_ON_TX; | |
1799 | ret_val = | |
1800 | e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data); | |
1801 | if (ret_val) | |
1802 | return ret_val; | |
1803 | ||
1804 | if ((hw->mac_type == e1000_82544 || hw->mac_type == e1000_82543) | |
1805 | && (!hw->autoneg) | |
1806 | && (hw->forced_speed_duplex == e1000_10_full | |
1807 | || hw->forced_speed_duplex == e1000_10_half)) { | |
1808 | ret_val = e1000_polarity_reversal_workaround(hw); | |
1809 | if (ret_val) | |
1810 | return ret_val; | |
1811 | } | |
1812 | } | |
1813 | return E1000_SUCCESS; | |
1814 | } | |
1815 | ||
1816 | /** | |
1817 | * e1000_config_collision_dist - set collision distance register | |
1818 | * @hw: Struct containing variables accessed by shared code | |
1819 | * | |
1820 | * Sets the collision distance in the Transmit Control register. | |
1821 | * Link should have been established previously. Reads the speed and duplex | |
1822 | * information from the Device Status register. | |
1823 | */ | |
1824 | void e1000_config_collision_dist(struct e1000_hw *hw) | |
1825 | { | |
1826 | u32 tctl, coll_dist; | |
1827 | ||
675ad473 | 1828 | e_dbg("e1000_config_collision_dist"); |
120a5d0d JB |
1829 | |
1830 | if (hw->mac_type < e1000_82543) | |
1831 | coll_dist = E1000_COLLISION_DISTANCE_82542; | |
1832 | else | |
1833 | coll_dist = E1000_COLLISION_DISTANCE; | |
1834 | ||
1835 | tctl = er32(TCTL); | |
1836 | ||
1837 | tctl &= ~E1000_TCTL_COLD; | |
1838 | tctl |= coll_dist << E1000_COLD_SHIFT; | |
1839 | ||
1840 | ew32(TCTL, tctl); | |
1841 | E1000_WRITE_FLUSH(); | |
1842 | } | |
1843 | ||
1844 | /** | |
1845 | * e1000_config_mac_to_phy - sync phy and mac settings | |
1846 | * @hw: Struct containing variables accessed by shared code | |
1847 | * @mii_reg: data to write to the MII control register | |
1848 | * | |
1849 | * Sets MAC speed and duplex settings to reflect the those in the PHY | |
1850 | * The contents of the PHY register containing the needed information need to | |
1851 | * be passed in. | |
1852 | */ | |
1853 | static s32 e1000_config_mac_to_phy(struct e1000_hw *hw) | |
1854 | { | |
1855 | u32 ctrl; | |
1856 | s32 ret_val; | |
1857 | u16 phy_data; | |
1858 | ||
675ad473 | 1859 | e_dbg("e1000_config_mac_to_phy"); |
120a5d0d JB |
1860 | |
1861 | /* 82544 or newer MAC, Auto Speed Detection takes care of | |
1862 | * MAC speed/duplex configuration.*/ | |
1863 | if (hw->mac_type >= e1000_82544) | |
1864 | return E1000_SUCCESS; | |
1865 | ||
1866 | /* Read the Device Control Register and set the bits to Force Speed | |
1867 | * and Duplex. | |
1868 | */ | |
1869 | ctrl = er32(CTRL); | |
1870 | ctrl |= (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX); | |
1871 | ctrl &= ~(E1000_CTRL_SPD_SEL | E1000_CTRL_ILOS); | |
1872 | ||
1873 | /* Set up duplex in the Device Control and Transmit Control | |
1874 | * registers depending on negotiated values. | |
1875 | */ | |
1876 | ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS, &phy_data); | |
1877 | if (ret_val) | |
1878 | return ret_val; | |
1879 | ||
1880 | if (phy_data & M88E1000_PSSR_DPLX) | |
1881 | ctrl |= E1000_CTRL_FD; | |
1882 | else | |
1883 | ctrl &= ~E1000_CTRL_FD; | |
1884 | ||
1885 | e1000_config_collision_dist(hw); | |
1886 | ||
1887 | /* Set up speed in the Device Control register depending on | |
1888 | * negotiated values. | |
1889 | */ | |
1890 | if ((phy_data & M88E1000_PSSR_SPEED) == M88E1000_PSSR_1000MBS) | |
1891 | ctrl |= E1000_CTRL_SPD_1000; | |
1892 | else if ((phy_data & M88E1000_PSSR_SPEED) == M88E1000_PSSR_100MBS) | |
1893 | ctrl |= E1000_CTRL_SPD_100; | |
1894 | ||
1895 | /* Write the configured values back to the Device Control Reg. */ | |
1896 | ew32(CTRL, ctrl); | |
1897 | return E1000_SUCCESS; | |
1898 | } | |
1899 | ||
1900 | /** | |
1901 | * e1000_force_mac_fc - force flow control settings | |
1902 | * @hw: Struct containing variables accessed by shared code | |
1903 | * | |
1904 | * Forces the MAC's flow control settings. | |
1da177e4 LT |
1905 | * Sets the TFCE and RFCE bits in the device control register to reflect |
1906 | * the adapter settings. TFCE and RFCE need to be explicitly set by | |
1907 | * software when a Copper PHY is used because autonegotiation is managed | |
1908 | * by the PHY rather than the MAC. Software must also configure these | |
1909 | * bits when link is forced on a fiber connection. | |
120a5d0d | 1910 | */ |
64798845 | 1911 | s32 e1000_force_mac_fc(struct e1000_hw *hw) |
1da177e4 | 1912 | { |
120a5d0d JB |
1913 | u32 ctrl; |
1914 | ||
675ad473 | 1915 | e_dbg("e1000_force_mac_fc"); |
120a5d0d JB |
1916 | |
1917 | /* Get the current configuration of the Device Control Register */ | |
1918 | ctrl = er32(CTRL); | |
1919 | ||
1920 | /* Because we didn't get link via the internal auto-negotiation | |
1921 | * mechanism (we either forced link or we got link via PHY | |
1922 | * auto-neg), we have to manually enable/disable transmit an | |
1923 | * receive flow control. | |
1924 | * | |
1925 | * The "Case" statement below enables/disable flow control | |
1926 | * according to the "hw->fc" parameter. | |
1927 | * | |
1928 | * The possible values of the "fc" parameter are: | |
1929 | * 0: Flow control is completely disabled | |
1930 | * 1: Rx flow control is enabled (we can receive pause | |
1931 | * frames but not send pause frames). | |
1932 | * 2: Tx flow control is enabled (we can send pause frames | |
1933 | * frames but we do not receive pause frames). | |
1934 | * 3: Both Rx and TX flow control (symmetric) is enabled. | |
1935 | * other: No other values should be possible at this point. | |
1936 | */ | |
1937 | ||
1938 | switch (hw->fc) { | |
1939 | case E1000_FC_NONE: | |
1940 | ctrl &= (~(E1000_CTRL_TFCE | E1000_CTRL_RFCE)); | |
1941 | break; | |
1942 | case E1000_FC_RX_PAUSE: | |
1943 | ctrl &= (~E1000_CTRL_TFCE); | |
1944 | ctrl |= E1000_CTRL_RFCE; | |
1945 | break; | |
1946 | case E1000_FC_TX_PAUSE: | |
1947 | ctrl &= (~E1000_CTRL_RFCE); | |
1948 | ctrl |= E1000_CTRL_TFCE; | |
1949 | break; | |
1950 | case E1000_FC_FULL: | |
1951 | ctrl |= (E1000_CTRL_TFCE | E1000_CTRL_RFCE); | |
1952 | break; | |
1953 | default: | |
675ad473 | 1954 | e_dbg("Flow control param set incorrectly\n"); |
120a5d0d JB |
1955 | return -E1000_ERR_CONFIG; |
1956 | } | |
1957 | ||
1958 | /* Disable TX Flow Control for 82542 (rev 2.0) */ | |
1959 | if (hw->mac_type == e1000_82542_rev2_0) | |
1960 | ctrl &= (~E1000_CTRL_TFCE); | |
1961 | ||
1962 | ew32(CTRL, ctrl); | |
1963 | return E1000_SUCCESS; | |
1da177e4 LT |
1964 | } |
1965 | ||
120a5d0d JB |
1966 | /** |
1967 | * e1000_config_fc_after_link_up - configure flow control after autoneg | |
1968 | * @hw: Struct containing variables accessed by shared code | |
1da177e4 | 1969 | * |
120a5d0d | 1970 | * Configures flow control settings after link is established |
1da177e4 LT |
1971 | * Should be called immediately after a valid link has been established. |
1972 | * Forces MAC flow control settings if link was forced. When in MII/GMII mode | |
1973 | * and autonegotiation is enabled, the MAC flow control settings will be set | |
1974 | * based on the flow control negotiated by the PHY. In TBI mode, the TFCE | |
120a5d0d JB |
1975 | * and RFCE bits will be automatically set to the negotiated flow control mode. |
1976 | */ | |
64798845 | 1977 | static s32 e1000_config_fc_after_link_up(struct e1000_hw *hw) |
1da177e4 | 1978 | { |
120a5d0d JB |
1979 | s32 ret_val; |
1980 | u16 mii_status_reg; | |
1981 | u16 mii_nway_adv_reg; | |
1982 | u16 mii_nway_lp_ability_reg; | |
1983 | u16 speed; | |
1984 | u16 duplex; | |
1985 | ||
675ad473 | 1986 | e_dbg("e1000_config_fc_after_link_up"); |
120a5d0d JB |
1987 | |
1988 | /* Check for the case where we have fiber media and auto-neg failed | |
1989 | * so we had to force link. In this case, we need to force the | |
1990 | * configuration of the MAC to match the "fc" parameter. | |
1991 | */ | |
1992 | if (((hw->media_type == e1000_media_type_fiber) && (hw->autoneg_failed)) | |
1993 | || ((hw->media_type == e1000_media_type_internal_serdes) | |
1994 | && (hw->autoneg_failed)) | |
1995 | || ((hw->media_type == e1000_media_type_copper) | |
1996 | && (!hw->autoneg))) { | |
1997 | ret_val = e1000_force_mac_fc(hw); | |
1998 | if (ret_val) { | |
675ad473 | 1999 | e_dbg("Error forcing flow control settings\n"); |
120a5d0d JB |
2000 | return ret_val; |
2001 | } | |
2002 | } | |
2003 | ||
2004 | /* Check for the case where we have copper media and auto-neg is | |
2005 | * enabled. In this case, we need to check and see if Auto-Neg | |
2006 | * has completed, and if so, how the PHY and link partner has | |
2007 | * flow control configured. | |
2008 | */ | |
2009 | if ((hw->media_type == e1000_media_type_copper) && hw->autoneg) { | |
2010 | /* Read the MII Status Register and check to see if AutoNeg | |
2011 | * has completed. We read this twice because this reg has | |
2012 | * some "sticky" (latched) bits. | |
2013 | */ | |
2014 | ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg); | |
2015 | if (ret_val) | |
2016 | return ret_val; | |
2017 | ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg); | |
2018 | if (ret_val) | |
2019 | return ret_val; | |
2020 | ||
2021 | if (mii_status_reg & MII_SR_AUTONEG_COMPLETE) { | |
2022 | /* The AutoNeg process has completed, so we now need to | |
2023 | * read both the Auto Negotiation Advertisement Register | |
2024 | * (Address 4) and the Auto_Negotiation Base Page Ability | |
2025 | * Register (Address 5) to determine how flow control was | |
2026 | * negotiated. | |
2027 | */ | |
2028 | ret_val = e1000_read_phy_reg(hw, PHY_AUTONEG_ADV, | |
2029 | &mii_nway_adv_reg); | |
2030 | if (ret_val) | |
2031 | return ret_val; | |
2032 | ret_val = e1000_read_phy_reg(hw, PHY_LP_ABILITY, | |
2033 | &mii_nway_lp_ability_reg); | |
2034 | if (ret_val) | |
2035 | return ret_val; | |
2036 | ||
2037 | /* Two bits in the Auto Negotiation Advertisement Register | |
2038 | * (Address 4) and two bits in the Auto Negotiation Base | |
2039 | * Page Ability Register (Address 5) determine flow control | |
2040 | * for both the PHY and the link partner. The following | |
2041 | * table, taken out of the IEEE 802.3ab/D6.0 dated March 25, | |
2042 | * 1999, describes these PAUSE resolution bits and how flow | |
2043 | * control is determined based upon these settings. | |
2044 | * NOTE: DC = Don't Care | |
2045 | * | |
2046 | * LOCAL DEVICE | LINK PARTNER | |
2047 | * PAUSE | ASM_DIR | PAUSE | ASM_DIR | NIC Resolution | |
2048 | *-------|---------|-------|---------|-------------------- | |
2049 | * 0 | 0 | DC | DC | E1000_FC_NONE | |
2050 | * 0 | 1 | 0 | DC | E1000_FC_NONE | |
2051 | * 0 | 1 | 1 | 0 | E1000_FC_NONE | |
2052 | * 0 | 1 | 1 | 1 | E1000_FC_TX_PAUSE | |
2053 | * 1 | 0 | 0 | DC | E1000_FC_NONE | |
2054 | * 1 | DC | 1 | DC | E1000_FC_FULL | |
2055 | * 1 | 1 | 0 | 0 | E1000_FC_NONE | |
2056 | * 1 | 1 | 0 | 1 | E1000_FC_RX_PAUSE | |
2057 | * | |
2058 | */ | |
2059 | /* Are both PAUSE bits set to 1? If so, this implies | |
2060 | * Symmetric Flow Control is enabled at both ends. The | |
2061 | * ASM_DIR bits are irrelevant per the spec. | |
2062 | * | |
2063 | * For Symmetric Flow Control: | |
2064 | * | |
2065 | * LOCAL DEVICE | LINK PARTNER | |
2066 | * PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result | |
2067 | *-------|---------|-------|---------|-------------------- | |
2068 | * 1 | DC | 1 | DC | E1000_FC_FULL | |
2069 | * | |
2070 | */ | |
2071 | if ((mii_nway_adv_reg & NWAY_AR_PAUSE) && | |
2072 | (mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE)) { | |
2073 | /* Now we need to check if the user selected RX ONLY | |
2074 | * of pause frames. In this case, we had to advertise | |
2075 | * FULL flow control because we could not advertise RX | |
2076 | * ONLY. Hence, we must now check to see if we need to | |
2077 | * turn OFF the TRANSMISSION of PAUSE frames. | |
2078 | */ | |
2079 | if (hw->original_fc == E1000_FC_FULL) { | |
2080 | hw->fc = E1000_FC_FULL; | |
675ad473 | 2081 | e_dbg("Flow Control = FULL.\n"); |
120a5d0d JB |
2082 | } else { |
2083 | hw->fc = E1000_FC_RX_PAUSE; | |
675ad473 | 2084 | e_dbg |
120a5d0d JB |
2085 | ("Flow Control = RX PAUSE frames only.\n"); |
2086 | } | |
2087 | } | |
2088 | /* For receiving PAUSE frames ONLY. | |
2089 | * | |
2090 | * LOCAL DEVICE | LINK PARTNER | |
2091 | * PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result | |
2092 | *-------|---------|-------|---------|-------------------- | |
2093 | * 0 | 1 | 1 | 1 | E1000_FC_TX_PAUSE | |
2094 | * | |
2095 | */ | |
2096 | else if (!(mii_nway_adv_reg & NWAY_AR_PAUSE) && | |
2097 | (mii_nway_adv_reg & NWAY_AR_ASM_DIR) && | |
2098 | (mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE) && | |
2099 | (mii_nway_lp_ability_reg & NWAY_LPAR_ASM_DIR)) | |
2100 | { | |
2101 | hw->fc = E1000_FC_TX_PAUSE; | |
675ad473 | 2102 | e_dbg |
120a5d0d JB |
2103 | ("Flow Control = TX PAUSE frames only.\n"); |
2104 | } | |
2105 | /* For transmitting PAUSE frames ONLY. | |
2106 | * | |
2107 | * LOCAL DEVICE | LINK PARTNER | |
2108 | * PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result | |
2109 | *-------|---------|-------|---------|-------------------- | |
2110 | * 1 | 1 | 0 | 1 | E1000_FC_RX_PAUSE | |
2111 | * | |
2112 | */ | |
2113 | else if ((mii_nway_adv_reg & NWAY_AR_PAUSE) && | |
2114 | (mii_nway_adv_reg & NWAY_AR_ASM_DIR) && | |
2115 | !(mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE) && | |
2116 | (mii_nway_lp_ability_reg & NWAY_LPAR_ASM_DIR)) | |
2117 | { | |
2118 | hw->fc = E1000_FC_RX_PAUSE; | |
675ad473 | 2119 | e_dbg |
120a5d0d JB |
2120 | ("Flow Control = RX PAUSE frames only.\n"); |
2121 | } | |
2122 | /* Per the IEEE spec, at this point flow control should be | |
2123 | * disabled. However, we want to consider that we could | |
2124 | * be connected to a legacy switch that doesn't advertise | |
2125 | * desired flow control, but can be forced on the link | |
2126 | * partner. So if we advertised no flow control, that is | |
2127 | * what we will resolve to. If we advertised some kind of | |
2128 | * receive capability (Rx Pause Only or Full Flow Control) | |
2129 | * and the link partner advertised none, we will configure | |
2130 | * ourselves to enable Rx Flow Control only. We can do | |
2131 | * this safely for two reasons: If the link partner really | |
2132 | * didn't want flow control enabled, and we enable Rx, no | |
2133 | * harm done since we won't be receiving any PAUSE frames | |
2134 | * anyway. If the intent on the link partner was to have | |
2135 | * flow control enabled, then by us enabling RX only, we | |
2136 | * can at least receive pause frames and process them. | |
2137 | * This is a good idea because in most cases, since we are | |
2138 | * predominantly a server NIC, more times than not we will | |
2139 | * be asked to delay transmission of packets than asking | |
2140 | * our link partner to pause transmission of frames. | |
2141 | */ | |
2142 | else if ((hw->original_fc == E1000_FC_NONE || | |
2143 | hw->original_fc == E1000_FC_TX_PAUSE) || | |
2144 | hw->fc_strict_ieee) { | |
2145 | hw->fc = E1000_FC_NONE; | |
675ad473 | 2146 | e_dbg("Flow Control = NONE.\n"); |
120a5d0d JB |
2147 | } else { |
2148 | hw->fc = E1000_FC_RX_PAUSE; | |
675ad473 | 2149 | e_dbg |
120a5d0d JB |
2150 | ("Flow Control = RX PAUSE frames only.\n"); |
2151 | } | |
2152 | ||
2153 | /* Now we need to do one last check... If we auto- | |
2154 | * negotiated to HALF DUPLEX, flow control should not be | |
2155 | * enabled per IEEE 802.3 spec. | |
2156 | */ | |
2157 | ret_val = | |
2158 | e1000_get_speed_and_duplex(hw, &speed, &duplex); | |
2159 | if (ret_val) { | |
675ad473 | 2160 | e_dbg |
120a5d0d JB |
2161 | ("Error getting link speed and duplex\n"); |
2162 | return ret_val; | |
2163 | } | |
2164 | ||
2165 | if (duplex == HALF_DUPLEX) | |
2166 | hw->fc = E1000_FC_NONE; | |
2167 | ||
2168 | /* Now we call a subroutine to actually force the MAC | |
2169 | * controller to use the correct flow control settings. | |
2170 | */ | |
2171 | ret_val = e1000_force_mac_fc(hw); | |
2172 | if (ret_val) { | |
675ad473 | 2173 | e_dbg |
120a5d0d JB |
2174 | ("Error forcing flow control settings\n"); |
2175 | return ret_val; | |
2176 | } | |
2177 | } else { | |
675ad473 | 2178 | e_dbg |
120a5d0d JB |
2179 | ("Copper PHY and Auto Neg has not completed.\n"); |
2180 | } | |
2181 | } | |
2182 | return E1000_SUCCESS; | |
1da177e4 LT |
2183 | } |
2184 | ||
be0f0719 | 2185 | /** |
120a5d0d JB |
2186 | * e1000_check_for_serdes_link_generic - Check for link (Serdes) |
2187 | * @hw: pointer to the HW structure | |
be0f0719 | 2188 | * |
120a5d0d JB |
2189 | * Checks for link up on the hardware. If link is not up and we have |
2190 | * a signal, then we need to force link up. | |
2191 | */ | |
11b7f7b3 | 2192 | static s32 e1000_check_for_serdes_link_generic(struct e1000_hw *hw) |
be0f0719 JB |
2193 | { |
2194 | u32 rxcw; | |
2195 | u32 ctrl; | |
2196 | u32 status; | |
2197 | s32 ret_val = E1000_SUCCESS; | |
2198 | ||
675ad473 | 2199 | e_dbg("e1000_check_for_serdes_link_generic"); |
be0f0719 JB |
2200 | |
2201 | ctrl = er32(CTRL); | |
2202 | status = er32(STATUS); | |
2203 | rxcw = er32(RXCW); | |
2204 | ||
2205 | /* | |
2206 | * If we don't have link (auto-negotiation failed or link partner | |
2207 | * cannot auto-negotiate), and our link partner is not trying to | |
2208 | * auto-negotiate with us (we are receiving idles or data), | |
2209 | * we need to force link up. We also need to give auto-negotiation | |
2210 | * time to complete. | |
2211 | */ | |
2212 | /* (ctrl & E1000_CTRL_SWDPIN1) == 1 == have signal */ | |
2213 | if ((!(status & E1000_STATUS_LU)) && (!(rxcw & E1000_RXCW_C))) { | |
2214 | if (hw->autoneg_failed == 0) { | |
2215 | hw->autoneg_failed = 1; | |
2216 | goto out; | |
2217 | } | |
675ad473 | 2218 | e_dbg("NOT RXing /C/, disable AutoNeg and force link.\n"); |
be0f0719 JB |
2219 | |
2220 | /* Disable auto-negotiation in the TXCW register */ | |
2221 | ew32(TXCW, (hw->txcw & ~E1000_TXCW_ANE)); | |
2222 | ||
2223 | /* Force link-up and also force full-duplex. */ | |
2224 | ctrl = er32(CTRL); | |
2225 | ctrl |= (E1000_CTRL_SLU | E1000_CTRL_FD); | |
2226 | ew32(CTRL, ctrl); | |
2227 | ||
2228 | /* Configure Flow Control after forcing link up. */ | |
2229 | ret_val = e1000_config_fc_after_link_up(hw); | |
2230 | if (ret_val) { | |
675ad473 | 2231 | e_dbg("Error configuring flow control\n"); |
be0f0719 JB |
2232 | goto out; |
2233 | } | |
2234 | } else if ((ctrl & E1000_CTRL_SLU) && (rxcw & E1000_RXCW_C)) { | |
2235 | /* | |
2236 | * If we are forcing link and we are receiving /C/ ordered | |
2237 | * sets, re-enable auto-negotiation in the TXCW register | |
2238 | * and disable forced link in the Device Control register | |
2239 | * in an attempt to auto-negotiate with our link partner. | |
2240 | */ | |
675ad473 | 2241 | e_dbg("RXing /C/, enable AutoNeg and stop forcing link.\n"); |
be0f0719 JB |
2242 | ew32(TXCW, hw->txcw); |
2243 | ew32(CTRL, (ctrl & ~E1000_CTRL_SLU)); | |
2244 | ||
2245 | hw->serdes_has_link = true; | |
2246 | } else if (!(E1000_TXCW_ANE & er32(TXCW))) { | |
2247 | /* | |
2248 | * If we force link for non-auto-negotiation switch, check | |
2249 | * link status based on MAC synchronization for internal | |
2250 | * serdes media type. | |
2251 | */ | |
2252 | /* SYNCH bit and IV bit are sticky. */ | |
2253 | udelay(10); | |
2254 | rxcw = er32(RXCW); | |
2255 | if (rxcw & E1000_RXCW_SYNCH) { | |
2256 | if (!(rxcw & E1000_RXCW_IV)) { | |
2257 | hw->serdes_has_link = true; | |
675ad473 | 2258 | e_dbg("SERDES: Link up - forced.\n"); |
be0f0719 JB |
2259 | } |
2260 | } else { | |
2261 | hw->serdes_has_link = false; | |
675ad473 | 2262 | e_dbg("SERDES: Link down - force failed.\n"); |
be0f0719 JB |
2263 | } |
2264 | } | |
2265 | ||
2266 | if (E1000_TXCW_ANE & er32(TXCW)) { | |
2267 | status = er32(STATUS); | |
2268 | if (status & E1000_STATUS_LU) { | |
2269 | /* SYNCH bit and IV bit are sticky, so reread rxcw. */ | |
2270 | udelay(10); | |
2271 | rxcw = er32(RXCW); | |
2272 | if (rxcw & E1000_RXCW_SYNCH) { | |
2273 | if (!(rxcw & E1000_RXCW_IV)) { | |
2274 | hw->serdes_has_link = true; | |
675ad473 | 2275 | e_dbg("SERDES: Link up - autoneg " |
120a5d0d | 2276 | "completed successfully.\n"); |
be0f0719 JB |
2277 | } else { |
2278 | hw->serdes_has_link = false; | |
675ad473 | 2279 | e_dbg("SERDES: Link down - invalid" |
120a5d0d JB |
2280 | "codewords detected in autoneg.\n"); |
2281 | } | |
2282 | } else { | |
2283 | hw->serdes_has_link = false; | |
675ad473 | 2284 | e_dbg("SERDES: Link down - no sync.\n"); |
120a5d0d JB |
2285 | } |
2286 | } else { | |
2287 | hw->serdes_has_link = false; | |
675ad473 | 2288 | e_dbg("SERDES: Link down - autoneg failed\n"); |
120a5d0d JB |
2289 | } |
2290 | } | |
2291 | ||
2292 | out: | |
2293 | return ret_val; | |
2294 | } | |
2295 | ||
2296 | /** | |
2297 | * e1000_check_for_link | |
2298 | * @hw: Struct containing variables accessed by shared code | |
2299 | * | |
2300 | * Checks to see if the link status of the hardware has changed. | |
2301 | * Called by any function that needs to check the link status of the adapter. | |
2302 | */ | |
2303 | s32 e1000_check_for_link(struct e1000_hw *hw) | |
2304 | { | |
2305 | u32 rxcw = 0; | |
2306 | u32 ctrl; | |
2307 | u32 status; | |
2308 | u32 rctl; | |
2309 | u32 icr; | |
2310 | u32 signal = 0; | |
2311 | s32 ret_val; | |
2312 | u16 phy_data; | |
2313 | ||
675ad473 | 2314 | e_dbg("e1000_check_for_link"); |
120a5d0d JB |
2315 | |
2316 | ctrl = er32(CTRL); | |
2317 | status = er32(STATUS); | |
2318 | ||
2319 | /* On adapters with a MAC newer than 82544, SW Definable pin 1 will be | |
2320 | * set when the optics detect a signal. On older adapters, it will be | |
2321 | * cleared when there is a signal. This applies to fiber media only. | |
2322 | */ | |
2323 | if ((hw->media_type == e1000_media_type_fiber) || | |
2324 | (hw->media_type == e1000_media_type_internal_serdes)) { | |
2325 | rxcw = er32(RXCW); | |
2326 | ||
2327 | if (hw->media_type == e1000_media_type_fiber) { | |
2328 | signal = | |
2329 | (hw->mac_type > | |
2330 | e1000_82544) ? E1000_CTRL_SWDPIN1 : 0; | |
2331 | if (status & E1000_STATUS_LU) | |
2332 | hw->get_link_status = false; | |
2333 | } | |
2334 | } | |
2335 | ||
2336 | /* If we have a copper PHY then we only want to go out to the PHY | |
2337 | * registers to see if Auto-Neg has completed and/or if our link | |
2338 | * status has changed. The get_link_status flag will be set if we | |
2339 | * receive a Link Status Change interrupt or we have Rx Sequence | |
2340 | * Errors. | |
2341 | */ | |
2342 | if ((hw->media_type == e1000_media_type_copper) && hw->get_link_status) { | |
2343 | /* First we want to see if the MII Status Register reports | |
2344 | * link. If so, then we want to get the current speed/duplex | |
2345 | * of the PHY. | |
2346 | * Read the register twice since the link bit is sticky. | |
2347 | */ | |
2348 | ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data); | |
2349 | if (ret_val) | |
2350 | return ret_val; | |
2351 | ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data); | |
2352 | if (ret_val) | |
2353 | return ret_val; | |
2354 | ||
2355 | if (phy_data & MII_SR_LINK_STATUS) { | |
2356 | hw->get_link_status = false; | |
2357 | /* Check if there was DownShift, must be checked immediately after | |
2358 | * link-up */ | |
2359 | e1000_check_downshift(hw); | |
2360 | ||
2361 | /* If we are on 82544 or 82543 silicon and speed/duplex | |
2362 | * are forced to 10H or 10F, then we will implement the polarity | |
2363 | * reversal workaround. We disable interrupts first, and upon | |
2364 | * returning, place the devices interrupt state to its previous | |
2365 | * value except for the link status change interrupt which will | |
2366 | * happen due to the execution of this workaround. | |
2367 | */ | |
2368 | ||
2369 | if ((hw->mac_type == e1000_82544 | |
2370 | || hw->mac_type == e1000_82543) && (!hw->autoneg) | |
2371 | && (hw->forced_speed_duplex == e1000_10_full | |
2372 | || hw->forced_speed_duplex == e1000_10_half)) { | |
2373 | ew32(IMC, 0xffffffff); | |
2374 | ret_val = | |
2375 | e1000_polarity_reversal_workaround(hw); | |
2376 | icr = er32(ICR); | |
2377 | ew32(ICS, (icr & ~E1000_ICS_LSC)); | |
2378 | ew32(IMS, IMS_ENABLE_MASK); | |
2379 | } | |
2380 | ||
2381 | } else { | |
2382 | /* No link detected */ | |
2383 | e1000_config_dsp_after_link_change(hw, false); | |
2384 | return 0; | |
2385 | } | |
2386 | ||
2387 | /* If we are forcing speed/duplex, then we simply return since | |
2388 | * we have already determined whether we have link or not. | |
2389 | */ | |
2390 | if (!hw->autoneg) | |
2391 | return -E1000_ERR_CONFIG; | |
2392 | ||
2393 | /* optimize the dsp settings for the igp phy */ | |
2394 | e1000_config_dsp_after_link_change(hw, true); | |
2395 | ||
2396 | /* We have a M88E1000 PHY and Auto-Neg is enabled. If we | |
2397 | * have Si on board that is 82544 or newer, Auto | |
2398 | * Speed Detection takes care of MAC speed/duplex | |
2399 | * configuration. So we only need to configure Collision | |
2400 | * Distance in the MAC. Otherwise, we need to force | |
2401 | * speed/duplex on the MAC to the current PHY speed/duplex | |
2402 | * settings. | |
2403 | */ | |
2404 | if (hw->mac_type >= e1000_82544) | |
2405 | e1000_config_collision_dist(hw); | |
2406 | else { | |
2407 | ret_val = e1000_config_mac_to_phy(hw); | |
2408 | if (ret_val) { | |
675ad473 | 2409 | e_dbg |
120a5d0d JB |
2410 | ("Error configuring MAC to PHY settings\n"); |
2411 | return ret_val; | |
2412 | } | |
2413 | } | |
2414 | ||
2415 | /* Configure Flow Control now that Auto-Neg has completed. First, we | |
2416 | * need to restore the desired flow control settings because we may | |
2417 | * have had to re-autoneg with a different link partner. | |
2418 | */ | |
2419 | ret_val = e1000_config_fc_after_link_up(hw); | |
2420 | if (ret_val) { | |
675ad473 | 2421 | e_dbg("Error configuring flow control\n"); |
120a5d0d JB |
2422 | return ret_val; |
2423 | } | |
2424 | ||
2425 | /* At this point we know that we are on copper and we have | |
2426 | * auto-negotiated link. These are conditions for checking the link | |
2427 | * partner capability register. We use the link speed to determine if | |
2428 | * TBI compatibility needs to be turned on or off. If the link is not | |
2429 | * at gigabit speed, then TBI compatibility is not needed. If we are | |
2430 | * at gigabit speed, we turn on TBI compatibility. | |
2431 | */ | |
2432 | if (hw->tbi_compatibility_en) { | |
2433 | u16 speed, duplex; | |
2434 | ret_val = | |
2435 | e1000_get_speed_and_duplex(hw, &speed, &duplex); | |
2436 | if (ret_val) { | |
675ad473 | 2437 | e_dbg |
120a5d0d JB |
2438 | ("Error getting link speed and duplex\n"); |
2439 | return ret_val; | |
2440 | } | |
2441 | if (speed != SPEED_1000) { | |
2442 | /* If link speed is not set to gigabit speed, we do not need | |
2443 | * to enable TBI compatibility. | |
2444 | */ | |
2445 | if (hw->tbi_compatibility_on) { | |
2446 | /* If we previously were in the mode, turn it off. */ | |
2447 | rctl = er32(RCTL); | |
2448 | rctl &= ~E1000_RCTL_SBP; | |
2449 | ew32(RCTL, rctl); | |
2450 | hw->tbi_compatibility_on = false; | |
be0f0719 JB |
2451 | } |
2452 | } else { | |
120a5d0d JB |
2453 | /* If TBI compatibility is was previously off, turn it on. For |
2454 | * compatibility with a TBI link partner, we will store bad | |
2455 | * packets. Some frames have an additional byte on the end and | |
2456 | * will look like CRC errors to to the hardware. | |
2457 | */ | |
2458 | if (!hw->tbi_compatibility_on) { | |
2459 | hw->tbi_compatibility_on = true; | |
2460 | rctl = er32(RCTL); | |
2461 | rctl |= E1000_RCTL_SBP; | |
2462 | ew32(RCTL, rctl); | |
2463 | } | |
be0f0719 | 2464 | } |
be0f0719 JB |
2465 | } |
2466 | } | |
2467 | ||
120a5d0d JB |
2468 | if ((hw->media_type == e1000_media_type_fiber) || |
2469 | (hw->media_type == e1000_media_type_internal_serdes)) | |
2470 | e1000_check_for_serdes_link_generic(hw); | |
2471 | ||
2472 | return E1000_SUCCESS; | |
1da177e4 LT |
2473 | } |
2474 | ||
120a5d0d JB |
2475 | /** |
2476 | * e1000_get_speed_and_duplex | |
2477 | * @hw: Struct containing variables accessed by shared code | |
2478 | * @speed: Speed of the connection | |
2479 | * @duplex: Duplex setting of the connection | |
2480 | ||
1da177e4 | 2481 | * Detects the current speed and duplex settings of the hardware. |
120a5d0d | 2482 | */ |
64798845 | 2483 | s32 e1000_get_speed_and_duplex(struct e1000_hw *hw, u16 *speed, u16 *duplex) |
1da177e4 | 2484 | { |
120a5d0d JB |
2485 | u32 status; |
2486 | s32 ret_val; | |
2487 | u16 phy_data; | |
2488 | ||
675ad473 | 2489 | e_dbg("e1000_get_speed_and_duplex"); |
120a5d0d JB |
2490 | |
2491 | if (hw->mac_type >= e1000_82543) { | |
2492 | status = er32(STATUS); | |
2493 | if (status & E1000_STATUS_SPEED_1000) { | |
2494 | *speed = SPEED_1000; | |
675ad473 | 2495 | e_dbg("1000 Mbs, "); |
120a5d0d JB |
2496 | } else if (status & E1000_STATUS_SPEED_100) { |
2497 | *speed = SPEED_100; | |
675ad473 | 2498 | e_dbg("100 Mbs, "); |
120a5d0d JB |
2499 | } else { |
2500 | *speed = SPEED_10; | |
675ad473 | 2501 | e_dbg("10 Mbs, "); |
120a5d0d JB |
2502 | } |
2503 | ||
2504 | if (status & E1000_STATUS_FD) { | |
2505 | *duplex = FULL_DUPLEX; | |
675ad473 | 2506 | e_dbg("Full Duplex\n"); |
120a5d0d JB |
2507 | } else { |
2508 | *duplex = HALF_DUPLEX; | |
675ad473 | 2509 | e_dbg(" Half Duplex\n"); |
120a5d0d JB |
2510 | } |
2511 | } else { | |
675ad473 | 2512 | e_dbg("1000 Mbs, Full Duplex\n"); |
120a5d0d JB |
2513 | *speed = SPEED_1000; |
2514 | *duplex = FULL_DUPLEX; | |
2515 | } | |
2516 | ||
2517 | /* IGP01 PHY may advertise full duplex operation after speed downgrade even | |
2518 | * if it is operating at half duplex. Here we set the duplex settings to | |
2519 | * match the duplex in the link partner's capabilities. | |
2520 | */ | |
2521 | if (hw->phy_type == e1000_phy_igp && hw->speed_downgraded) { | |
2522 | ret_val = e1000_read_phy_reg(hw, PHY_AUTONEG_EXP, &phy_data); | |
2523 | if (ret_val) | |
2524 | return ret_val; | |
2525 | ||
2526 | if (!(phy_data & NWAY_ER_LP_NWAY_CAPS)) | |
2527 | *duplex = HALF_DUPLEX; | |
2528 | else { | |
2529 | ret_val = | |
2530 | e1000_read_phy_reg(hw, PHY_LP_ABILITY, &phy_data); | |
2531 | if (ret_val) | |
2532 | return ret_val; | |
2533 | if ((*speed == SPEED_100 | |
2534 | && !(phy_data & NWAY_LPAR_100TX_FD_CAPS)) | |
2535 | || (*speed == SPEED_10 | |
2536 | && !(phy_data & NWAY_LPAR_10T_FD_CAPS))) | |
2537 | *duplex = HALF_DUPLEX; | |
2538 | } | |
2539 | } | |
2540 | ||
2541 | return E1000_SUCCESS; | |
1da177e4 LT |
2542 | } |
2543 | ||
120a5d0d JB |
2544 | /** |
2545 | * e1000_wait_autoneg | |
2546 | * @hw: Struct containing variables accessed by shared code | |
2547 | * | |
2548 | * Blocks until autoneg completes or times out (~4.5 seconds) | |
2549 | */ | |
64798845 | 2550 | static s32 e1000_wait_autoneg(struct e1000_hw *hw) |
1da177e4 | 2551 | { |
120a5d0d JB |
2552 | s32 ret_val; |
2553 | u16 i; | |
2554 | u16 phy_data; | |
2555 | ||
675ad473 ET |
2556 | e_dbg("e1000_wait_autoneg"); |
2557 | e_dbg("Waiting for Auto-Neg to complete.\n"); | |
120a5d0d JB |
2558 | |
2559 | /* We will wait for autoneg to complete or 4.5 seconds to expire. */ | |
2560 | for (i = PHY_AUTO_NEG_TIME; i > 0; i--) { | |
2561 | /* Read the MII Status Register and wait for Auto-Neg | |
2562 | * Complete bit to be set. | |
2563 | */ | |
2564 | ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data); | |
2565 | if (ret_val) | |
2566 | return ret_val; | |
2567 | ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data); | |
2568 | if (ret_val) | |
2569 | return ret_val; | |
2570 | if (phy_data & MII_SR_AUTONEG_COMPLETE) { | |
2571 | return E1000_SUCCESS; | |
2572 | } | |
2573 | msleep(100); | |
2574 | } | |
2575 | return E1000_SUCCESS; | |
1da177e4 LT |
2576 | } |
2577 | ||
120a5d0d JB |
2578 | /** |
2579 | * e1000_raise_mdi_clk - Raises the Management Data Clock | |
2580 | * @hw: Struct containing variables accessed by shared code | |
2581 | * @ctrl: Device control register's current value | |
2582 | */ | |
64798845 | 2583 | static void e1000_raise_mdi_clk(struct e1000_hw *hw, u32 *ctrl) |
1da177e4 | 2584 | { |
120a5d0d JB |
2585 | /* Raise the clock input to the Management Data Clock (by setting the MDC |
2586 | * bit), and then delay 10 microseconds. | |
2587 | */ | |
2588 | ew32(CTRL, (*ctrl | E1000_CTRL_MDC)); | |
2589 | E1000_WRITE_FLUSH(); | |
2590 | udelay(10); | |
1da177e4 LT |
2591 | } |
2592 | ||
120a5d0d JB |
2593 | /** |
2594 | * e1000_lower_mdi_clk - Lowers the Management Data Clock | |
2595 | * @hw: Struct containing variables accessed by shared code | |
2596 | * @ctrl: Device control register's current value | |
2597 | */ | |
64798845 | 2598 | static void e1000_lower_mdi_clk(struct e1000_hw *hw, u32 *ctrl) |
1da177e4 | 2599 | { |
120a5d0d JB |
2600 | /* Lower the clock input to the Management Data Clock (by clearing the MDC |
2601 | * bit), and then delay 10 microseconds. | |
2602 | */ | |
2603 | ew32(CTRL, (*ctrl & ~E1000_CTRL_MDC)); | |
2604 | E1000_WRITE_FLUSH(); | |
2605 | udelay(10); | |
1da177e4 LT |
2606 | } |
2607 | ||
120a5d0d JB |
2608 | /** |
2609 | * e1000_shift_out_mdi_bits - Shifts data bits out to the PHY | |
2610 | * @hw: Struct containing variables accessed by shared code | |
2611 | * @data: Data to send out to the PHY | |
2612 | * @count: Number of bits to shift out | |
2613 | * | |
2614 | * Bits are shifted out in MSB to LSB order. | |
2615 | */ | |
64798845 | 2616 | static void e1000_shift_out_mdi_bits(struct e1000_hw *hw, u32 data, u16 count) |
1da177e4 | 2617 | { |
120a5d0d JB |
2618 | u32 ctrl; |
2619 | u32 mask; | |
2620 | ||
2621 | /* We need to shift "count" number of bits out to the PHY. So, the value | |
2622 | * in the "data" parameter will be shifted out to the PHY one bit at a | |
2623 | * time. In order to do this, "data" must be broken down into bits. | |
2624 | */ | |
2625 | mask = 0x01; | |
2626 | mask <<= (count - 1); | |
2627 | ||
2628 | ctrl = er32(CTRL); | |
2629 | ||
2630 | /* Set MDIO_DIR and MDC_DIR direction bits to be used as output pins. */ | |
2631 | ctrl |= (E1000_CTRL_MDIO_DIR | E1000_CTRL_MDC_DIR); | |
2632 | ||
2633 | while (mask) { | |
2634 | /* A "1" is shifted out to the PHY by setting the MDIO bit to "1" and | |
2635 | * then raising and lowering the Management Data Clock. A "0" is | |
2636 | * shifted out to the PHY by setting the MDIO bit to "0" and then | |
2637 | * raising and lowering the clock. | |
2638 | */ | |
2639 | if (data & mask) | |
2640 | ctrl |= E1000_CTRL_MDIO; | |
2641 | else | |
2642 | ctrl &= ~E1000_CTRL_MDIO; | |
2643 | ||
2644 | ew32(CTRL, ctrl); | |
2645 | E1000_WRITE_FLUSH(); | |
2646 | ||
2647 | udelay(10); | |
2648 | ||
2649 | e1000_raise_mdi_clk(hw, &ctrl); | |
2650 | e1000_lower_mdi_clk(hw, &ctrl); | |
2651 | ||
2652 | mask = mask >> 1; | |
2653 | } | |
1da177e4 LT |
2654 | } |
2655 | ||
120a5d0d JB |
2656 | /** |
2657 | * e1000_shift_in_mdi_bits - Shifts data bits in from the PHY | |
2658 | * @hw: Struct containing variables accessed by shared code | |
2659 | * | |
2660 | * Bits are shifted in in MSB to LSB order. | |
2661 | */ | |
64798845 | 2662 | static u16 e1000_shift_in_mdi_bits(struct e1000_hw *hw) |
1da177e4 | 2663 | { |
120a5d0d JB |
2664 | u32 ctrl; |
2665 | u16 data = 0; | |
2666 | u8 i; | |
2667 | ||
2668 | /* In order to read a register from the PHY, we need to shift in a total | |
2669 | * of 18 bits from the PHY. The first two bit (turnaround) times are used | |
2670 | * to avoid contention on the MDIO pin when a read operation is performed. | |
2671 | * These two bits are ignored by us and thrown away. Bits are "shifted in" | |
2672 | * by raising the input to the Management Data Clock (setting the MDC bit), | |
2673 | * and then reading the value of the MDIO bit. | |
2674 | */ | |
2675 | ctrl = er32(CTRL); | |
2676 | ||
2677 | /* Clear MDIO_DIR (SWDPIO1) to indicate this bit is to be used as input. */ | |
2678 | ctrl &= ~E1000_CTRL_MDIO_DIR; | |
2679 | ctrl &= ~E1000_CTRL_MDIO; | |
2680 | ||
2681 | ew32(CTRL, ctrl); | |
2682 | E1000_WRITE_FLUSH(); | |
2683 | ||
2684 | /* Raise and Lower the clock before reading in the data. This accounts for | |
2685 | * the turnaround bits. The first clock occurred when we clocked out the | |
2686 | * last bit of the Register Address. | |
2687 | */ | |
2688 | e1000_raise_mdi_clk(hw, &ctrl); | |
2689 | e1000_lower_mdi_clk(hw, &ctrl); | |
2690 | ||
2691 | for (data = 0, i = 0; i < 16; i++) { | |
2692 | data = data << 1; | |
2693 | e1000_raise_mdi_clk(hw, &ctrl); | |
2694 | ctrl = er32(CTRL); | |
2695 | /* Check to see if we shifted in a "1". */ | |
2696 | if (ctrl & E1000_CTRL_MDIO) | |
2697 | data |= 1; | |
2698 | e1000_lower_mdi_clk(hw, &ctrl); | |
2699 | } | |
2700 | ||
2701 | e1000_raise_mdi_clk(hw, &ctrl); | |
2702 | e1000_lower_mdi_clk(hw, &ctrl); | |
2703 | ||
2704 | return data; | |
1da177e4 LT |
2705 | } |
2706 | ||
120a5d0d JB |
2707 | |
2708 | /** | |
2709 | * e1000_read_phy_reg - read a phy register | |
2710 | * @hw: Struct containing variables accessed by shared code | |
2711 | * @reg_addr: address of the PHY register to read | |
2712 | * | |
2713 | * Reads the value from a PHY register, if the value is on a specific non zero | |
2714 | * page, sets the page first. | |
2715 | */ | |
64798845 | 2716 | s32 e1000_read_phy_reg(struct e1000_hw *hw, u32 reg_addr, u16 *phy_data) |
1da177e4 | 2717 | { |
120a5d0d | 2718 | u32 ret_val; |
1da177e4 | 2719 | |
675ad473 | 2720 | e_dbg("e1000_read_phy_reg"); |
1da177e4 | 2721 | |
120a5d0d JB |
2722 | if ((hw->phy_type == e1000_phy_igp) && |
2723 | (reg_addr > MAX_PHY_MULTI_PAGE_REG)) { | |
2724 | ret_val = e1000_write_phy_reg_ex(hw, IGP01E1000_PHY_PAGE_SELECT, | |
2725 | (u16) reg_addr); | |
2726 | if (ret_val) | |
2727 | return ret_val; | |
2728 | } | |
2729 | ||
2730 | ret_val = e1000_read_phy_reg_ex(hw, MAX_PHY_REG_ADDRESS & reg_addr, | |
2731 | phy_data); | |
1da177e4 | 2732 | |
120a5d0d | 2733 | return ret_val; |
1da177e4 LT |
2734 | } |
2735 | ||
64798845 JP |
2736 | static s32 e1000_read_phy_reg_ex(struct e1000_hw *hw, u32 reg_addr, |
2737 | u16 *phy_data) | |
1da177e4 | 2738 | { |
120a5d0d JB |
2739 | u32 i; |
2740 | u32 mdic = 0; | |
2741 | const u32 phy_addr = 1; | |
2742 | ||
675ad473 | 2743 | e_dbg("e1000_read_phy_reg_ex"); |
120a5d0d JB |
2744 | |
2745 | if (reg_addr > MAX_PHY_REG_ADDRESS) { | |
675ad473 | 2746 | e_dbg("PHY Address %d is out of range\n", reg_addr); |
120a5d0d JB |
2747 | return -E1000_ERR_PARAM; |
2748 | } | |
2749 | ||
2750 | if (hw->mac_type > e1000_82543) { | |
2751 | /* Set up Op-code, Phy Address, and register address in the MDI | |
2752 | * Control register. The MAC will take care of interfacing with the | |
2753 | * PHY to retrieve the desired data. | |
2754 | */ | |
2755 | mdic = ((reg_addr << E1000_MDIC_REG_SHIFT) | | |
2756 | (phy_addr << E1000_MDIC_PHY_SHIFT) | | |
2757 | (E1000_MDIC_OP_READ)); | |
2758 | ||
2759 | ew32(MDIC, mdic); | |
2760 | ||
2761 | /* Poll the ready bit to see if the MDI read completed */ | |
2762 | for (i = 0; i < 64; i++) { | |
2763 | udelay(50); | |
2764 | mdic = er32(MDIC); | |
2765 | if (mdic & E1000_MDIC_READY) | |
2766 | break; | |
2767 | } | |
2768 | if (!(mdic & E1000_MDIC_READY)) { | |
675ad473 | 2769 | e_dbg("MDI Read did not complete\n"); |
120a5d0d JB |
2770 | return -E1000_ERR_PHY; |
2771 | } | |
2772 | if (mdic & E1000_MDIC_ERROR) { | |
675ad473 | 2773 | e_dbg("MDI Error\n"); |
120a5d0d JB |
2774 | return -E1000_ERR_PHY; |
2775 | } | |
2776 | *phy_data = (u16) mdic; | |
2777 | } else { | |
2778 | /* We must first send a preamble through the MDIO pin to signal the | |
2779 | * beginning of an MII instruction. This is done by sending 32 | |
2780 | * consecutive "1" bits. | |
2781 | */ | |
2782 | e1000_shift_out_mdi_bits(hw, PHY_PREAMBLE, PHY_PREAMBLE_SIZE); | |
2783 | ||
2784 | /* Now combine the next few fields that are required for a read | |
2785 | * operation. We use this method instead of calling the | |
2786 | * e1000_shift_out_mdi_bits routine five different times. The format of | |
2787 | * a MII read instruction consists of a shift out of 14 bits and is | |
2788 | * defined as follows: | |
2789 | * <Preamble><SOF><Op Code><Phy Addr><Reg Addr> | |
2790 | * followed by a shift in of 18 bits. This first two bits shifted in | |
2791 | * are TurnAround bits used to avoid contention on the MDIO pin when a | |
2792 | * READ operation is performed. These two bits are thrown away | |
2793 | * followed by a shift in of 16 bits which contains the desired data. | |
2794 | */ | |
2795 | mdic = ((reg_addr) | (phy_addr << 5) | | |
2796 | (PHY_OP_READ << 10) | (PHY_SOF << 12)); | |
2797 | ||
2798 | e1000_shift_out_mdi_bits(hw, mdic, 14); | |
2799 | ||
2800 | /* Now that we've shifted out the read command to the MII, we need to | |
2801 | * "shift in" the 16-bit value (18 total bits) of the requested PHY | |
2802 | * register address. | |
2803 | */ | |
2804 | *phy_data = e1000_shift_in_mdi_bits(hw); | |
2805 | } | |
2806 | return E1000_SUCCESS; | |
1da177e4 LT |
2807 | } |
2808 | ||
120a5d0d JB |
2809 | /** |
2810 | * e1000_write_phy_reg - write a phy register | |
2811 | * | |
2812 | * @hw: Struct containing variables accessed by shared code | |
2813 | * @reg_addr: address of the PHY register to write | |
2814 | * @data: data to write to the PHY | |
2815 | ||
2816 | * Writes a value to a PHY register | |
2817 | */ | |
64798845 | 2818 | s32 e1000_write_phy_reg(struct e1000_hw *hw, u32 reg_addr, u16 phy_data) |
1da177e4 | 2819 | { |
120a5d0d | 2820 | u32 ret_val; |
1da177e4 | 2821 | |
675ad473 | 2822 | e_dbg("e1000_write_phy_reg"); |
1da177e4 | 2823 | |
120a5d0d JB |
2824 | if ((hw->phy_type == e1000_phy_igp) && |
2825 | (reg_addr > MAX_PHY_MULTI_PAGE_REG)) { | |
2826 | ret_val = e1000_write_phy_reg_ex(hw, IGP01E1000_PHY_PAGE_SELECT, | |
2827 | (u16) reg_addr); | |
2828 | if (ret_val) | |
2829 | return ret_val; | |
2830 | } | |
1da177e4 | 2831 | |
120a5d0d JB |
2832 | ret_val = e1000_write_phy_reg_ex(hw, MAX_PHY_REG_ADDRESS & reg_addr, |
2833 | phy_data); | |
1da177e4 | 2834 | |
120a5d0d | 2835 | return ret_val; |
1da177e4 LT |
2836 | } |
2837 | ||
64798845 JP |
2838 | static s32 e1000_write_phy_reg_ex(struct e1000_hw *hw, u32 reg_addr, |
2839 | u16 phy_data) | |
1da177e4 | 2840 | { |
120a5d0d JB |
2841 | u32 i; |
2842 | u32 mdic = 0; | |
2843 | const u32 phy_addr = 1; | |
2844 | ||
675ad473 | 2845 | e_dbg("e1000_write_phy_reg_ex"); |
120a5d0d JB |
2846 | |
2847 | if (reg_addr > MAX_PHY_REG_ADDRESS) { | |
675ad473 | 2848 | e_dbg("PHY Address %d is out of range\n", reg_addr); |
120a5d0d JB |
2849 | return -E1000_ERR_PARAM; |
2850 | } | |
2851 | ||
2852 | if (hw->mac_type > e1000_82543) { | |
2853 | /* Set up Op-code, Phy Address, register address, and data intended | |
2854 | * for the PHY register in the MDI Control register. The MAC will take | |
2855 | * care of interfacing with the PHY to send the desired data. | |
2856 | */ | |
2857 | mdic = (((u32) phy_data) | | |
2858 | (reg_addr << E1000_MDIC_REG_SHIFT) | | |
2859 | (phy_addr << E1000_MDIC_PHY_SHIFT) | | |
2860 | (E1000_MDIC_OP_WRITE)); | |
2861 | ||
2862 | ew32(MDIC, mdic); | |
2863 | ||
2864 | /* Poll the ready bit to see if the MDI read completed */ | |
2865 | for (i = 0; i < 641; i++) { | |
2866 | udelay(5); | |
2867 | mdic = er32(MDIC); | |
2868 | if (mdic & E1000_MDIC_READY) | |
2869 | break; | |
2870 | } | |
2871 | if (!(mdic & E1000_MDIC_READY)) { | |
675ad473 | 2872 | e_dbg("MDI Write did not complete\n"); |
120a5d0d JB |
2873 | return -E1000_ERR_PHY; |
2874 | } | |
2875 | } else { | |
2876 | /* We'll need to use the SW defined pins to shift the write command | |
2877 | * out to the PHY. We first send a preamble to the PHY to signal the | |
2878 | * beginning of the MII instruction. This is done by sending 32 | |
2879 | * consecutive "1" bits. | |
2880 | */ | |
2881 | e1000_shift_out_mdi_bits(hw, PHY_PREAMBLE, PHY_PREAMBLE_SIZE); | |
2882 | ||
2883 | /* Now combine the remaining required fields that will indicate a | |
2884 | * write operation. We use this method instead of calling the | |
2885 | * e1000_shift_out_mdi_bits routine for each field in the command. The | |
2886 | * format of a MII write instruction is as follows: | |
2887 | * <Preamble><SOF><Op Code><Phy Addr><Reg Addr><Turnaround><Data>. | |
2888 | */ | |
2889 | mdic = ((PHY_TURNAROUND) | (reg_addr << 2) | (phy_addr << 7) | | |
2890 | (PHY_OP_WRITE << 12) | (PHY_SOF << 14)); | |
2891 | mdic <<= 16; | |
2892 | mdic |= (u32) phy_data; | |
2893 | ||
2894 | e1000_shift_out_mdi_bits(hw, mdic, 32); | |
2895 | } | |
2896 | ||
2897 | return E1000_SUCCESS; | |
1da177e4 LT |
2898 | } |
2899 | ||
120a5d0d JB |
2900 | /** |
2901 | * e1000_phy_hw_reset - reset the phy, hardware style | |
2902 | * @hw: Struct containing variables accessed by shared code | |
2903 | * | |
2904 | * Returns the PHY to the power-on reset state | |
2905 | */ | |
64798845 | 2906 | s32 e1000_phy_hw_reset(struct e1000_hw *hw) |
1da177e4 | 2907 | { |
120a5d0d JB |
2908 | u32 ctrl, ctrl_ext; |
2909 | u32 led_ctrl; | |
2910 | s32 ret_val; | |
2911 | ||
675ad473 | 2912 | e_dbg("e1000_phy_hw_reset"); |
120a5d0d | 2913 | |
675ad473 | 2914 | e_dbg("Resetting Phy...\n"); |
120a5d0d JB |
2915 | |
2916 | if (hw->mac_type > e1000_82543) { | |
2917 | /* Read the device control register and assert the E1000_CTRL_PHY_RST | |
2918 | * bit. Then, take it out of reset. | |
2919 | * For e1000 hardware, we delay for 10ms between the assert | |
2920 | * and deassert. | |
2921 | */ | |
2922 | ctrl = er32(CTRL); | |
2923 | ew32(CTRL, ctrl | E1000_CTRL_PHY_RST); | |
2924 | E1000_WRITE_FLUSH(); | |
2925 | ||
2926 | msleep(10); | |
2927 | ||
2928 | ew32(CTRL, ctrl); | |
2929 | E1000_WRITE_FLUSH(); | |
2930 | ||
2931 | } else { | |
2932 | /* Read the Extended Device Control Register, assert the PHY_RESET_DIR | |
2933 | * bit to put the PHY into reset. Then, take it out of reset. | |
2934 | */ | |
2935 | ctrl_ext = er32(CTRL_EXT); | |
2936 | ctrl_ext |= E1000_CTRL_EXT_SDP4_DIR; | |
2937 | ctrl_ext &= ~E1000_CTRL_EXT_SDP4_DATA; | |
2938 | ew32(CTRL_EXT, ctrl_ext); | |
2939 | E1000_WRITE_FLUSH(); | |
2940 | msleep(10); | |
2941 | ctrl_ext |= E1000_CTRL_EXT_SDP4_DATA; | |
2942 | ew32(CTRL_EXT, ctrl_ext); | |
2943 | E1000_WRITE_FLUSH(); | |
2944 | } | |
2945 | udelay(150); | |
2946 | ||
2947 | if ((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_82547)) { | |
2948 | /* Configure activity LED after PHY reset */ | |
2949 | led_ctrl = er32(LEDCTL); | |
2950 | led_ctrl &= IGP_ACTIVITY_LED_MASK; | |
2951 | led_ctrl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE); | |
2952 | ew32(LEDCTL, led_ctrl); | |
2953 | } | |
2954 | ||
2955 | /* Wait for FW to finish PHY configuration. */ | |
2956 | ret_val = e1000_get_phy_cfg_done(hw); | |
2957 | if (ret_val != E1000_SUCCESS) | |
2958 | return ret_val; | |
2959 | ||
2960 | return ret_val; | |
1da177e4 LT |
2961 | } |
2962 | ||
120a5d0d JB |
2963 | /** |
2964 | * e1000_phy_reset - reset the phy to commit settings | |
2965 | * @hw: Struct containing variables accessed by shared code | |
2966 | * | |
2967 | * Resets the PHY | |
2968 | * Sets bit 15 of the MII Control register | |
2969 | */ | |
64798845 | 2970 | s32 e1000_phy_reset(struct e1000_hw *hw) |
1da177e4 | 2971 | { |
120a5d0d JB |
2972 | s32 ret_val; |
2973 | u16 phy_data; | |
2974 | ||
675ad473 | 2975 | e_dbg("e1000_phy_reset"); |
120a5d0d JB |
2976 | |
2977 | switch (hw->phy_type) { | |
2978 | case e1000_phy_igp: | |
2979 | ret_val = e1000_phy_hw_reset(hw); | |
2980 | if (ret_val) | |
2981 | return ret_val; | |
2982 | break; | |
2983 | default: | |
2984 | ret_val = e1000_read_phy_reg(hw, PHY_CTRL, &phy_data); | |
2985 | if (ret_val) | |
2986 | return ret_val; | |
2987 | ||
2988 | phy_data |= MII_CR_RESET; | |
2989 | ret_val = e1000_write_phy_reg(hw, PHY_CTRL, phy_data); | |
2990 | if (ret_val) | |
2991 | return ret_val; | |
2992 | ||
2993 | udelay(1); | |
2994 | break; | |
2995 | } | |
2996 | ||
2997 | if (hw->phy_type == e1000_phy_igp) | |
2998 | e1000_phy_init_script(hw); | |
2999 | ||
3000 | return E1000_SUCCESS; | |
1da177e4 LT |
3001 | } |
3002 | ||
120a5d0d JB |
3003 | /** |
3004 | * e1000_detect_gig_phy - check the phy type | |
3005 | * @hw: Struct containing variables accessed by shared code | |
3006 | * | |
3007 | * Probes the expected PHY address for known PHY IDs | |
3008 | */ | |
64798845 | 3009 | static s32 e1000_detect_gig_phy(struct e1000_hw *hw) |
1da177e4 | 3010 | { |
120a5d0d JB |
3011 | s32 phy_init_status, ret_val; |
3012 | u16 phy_id_high, phy_id_low; | |
3013 | bool match = false; | |
3014 | ||
675ad473 | 3015 | e_dbg("e1000_detect_gig_phy"); |
120a5d0d JB |
3016 | |
3017 | if (hw->phy_id != 0) | |
3018 | return E1000_SUCCESS; | |
3019 | ||
3020 | /* Read the PHY ID Registers to identify which PHY is onboard. */ | |
3021 | ret_val = e1000_read_phy_reg(hw, PHY_ID1, &phy_id_high); | |
3022 | if (ret_val) | |
3023 | return ret_val; | |
3024 | ||
3025 | hw->phy_id = (u32) (phy_id_high << 16); | |
3026 | udelay(20); | |
3027 | ret_val = e1000_read_phy_reg(hw, PHY_ID2, &phy_id_low); | |
3028 | if (ret_val) | |
3029 | return ret_val; | |
3030 | ||
3031 | hw->phy_id |= (u32) (phy_id_low & PHY_REVISION_MASK); | |
3032 | hw->phy_revision = (u32) phy_id_low & ~PHY_REVISION_MASK; | |
3033 | ||
3034 | switch (hw->mac_type) { | |
3035 | case e1000_82543: | |
3036 | if (hw->phy_id == M88E1000_E_PHY_ID) | |
3037 | match = true; | |
3038 | break; | |
3039 | case e1000_82544: | |
3040 | if (hw->phy_id == M88E1000_I_PHY_ID) | |
3041 | match = true; | |
3042 | break; | |
3043 | case e1000_82540: | |
3044 | case e1000_82545: | |
3045 | case e1000_82545_rev_3: | |
3046 | case e1000_82546: | |
3047 | case e1000_82546_rev_3: | |
3048 | if (hw->phy_id == M88E1011_I_PHY_ID) | |
3049 | match = true; | |
3050 | break; | |
3051 | case e1000_82541: | |
3052 | case e1000_82541_rev_2: | |
3053 | case e1000_82547: | |
3054 | case e1000_82547_rev_2: | |
3055 | if (hw->phy_id == IGP01E1000_I_PHY_ID) | |
3056 | match = true; | |
3057 | break; | |
3058 | default: | |
675ad473 | 3059 | e_dbg("Invalid MAC type %d\n", hw->mac_type); |
120a5d0d JB |
3060 | return -E1000_ERR_CONFIG; |
3061 | } | |
3062 | phy_init_status = e1000_set_phy_type(hw); | |
3063 | ||
3064 | if ((match) && (phy_init_status == E1000_SUCCESS)) { | |
675ad473 | 3065 | e_dbg("PHY ID 0x%X detected\n", hw->phy_id); |
120a5d0d JB |
3066 | return E1000_SUCCESS; |
3067 | } | |
675ad473 | 3068 | e_dbg("Invalid PHY ID 0x%X\n", hw->phy_id); |
120a5d0d | 3069 | return -E1000_ERR_PHY; |
1da177e4 LT |
3070 | } |
3071 | ||
120a5d0d JB |
3072 | /** |
3073 | * e1000_phy_reset_dsp - reset DSP | |
3074 | * @hw: Struct containing variables accessed by shared code | |
3075 | * | |
3076 | * Resets the PHY's DSP | |
3077 | */ | |
64798845 | 3078 | static s32 e1000_phy_reset_dsp(struct e1000_hw *hw) |
1da177e4 | 3079 | { |
120a5d0d | 3080 | s32 ret_val; |
675ad473 | 3081 | e_dbg("e1000_phy_reset_dsp"); |
120a5d0d JB |
3082 | |
3083 | do { | |
3084 | ret_val = e1000_write_phy_reg(hw, 29, 0x001d); | |
3085 | if (ret_val) | |
3086 | break; | |
3087 | ret_val = e1000_write_phy_reg(hw, 30, 0x00c1); | |
3088 | if (ret_val) | |
3089 | break; | |
3090 | ret_val = e1000_write_phy_reg(hw, 30, 0x0000); | |
3091 | if (ret_val) | |
3092 | break; | |
3093 | ret_val = E1000_SUCCESS; | |
3094 | } while (0); | |
3095 | ||
3096 | return ret_val; | |
1da177e4 LT |
3097 | } |
3098 | ||
120a5d0d JB |
3099 | /** |
3100 | * e1000_phy_igp_get_info - get igp specific registers | |
3101 | * @hw: Struct containing variables accessed by shared code | |
3102 | * @phy_info: PHY information structure | |
3103 | * | |
3104 | * Get PHY information from various PHY registers for igp PHY only. | |
3105 | */ | |
64798845 JP |
3106 | static s32 e1000_phy_igp_get_info(struct e1000_hw *hw, |
3107 | struct e1000_phy_info *phy_info) | |
1da177e4 | 3108 | { |
120a5d0d JB |
3109 | s32 ret_val; |
3110 | u16 phy_data, min_length, max_length, average; | |
3111 | e1000_rev_polarity polarity; | |
3112 | ||
675ad473 | 3113 | e_dbg("e1000_phy_igp_get_info"); |
120a5d0d JB |
3114 | |
3115 | /* The downshift status is checked only once, after link is established, | |
3116 | * and it stored in the hw->speed_downgraded parameter. */ | |
3117 | phy_info->downshift = (e1000_downshift) hw->speed_downgraded; | |
3118 | ||
3119 | /* IGP01E1000 does not need to support it. */ | |
3120 | phy_info->extended_10bt_distance = e1000_10bt_ext_dist_enable_normal; | |
3121 | ||
3122 | /* IGP01E1000 always correct polarity reversal */ | |
3123 | phy_info->polarity_correction = e1000_polarity_reversal_enabled; | |
3124 | ||
3125 | /* Check polarity status */ | |
3126 | ret_val = e1000_check_polarity(hw, &polarity); | |
3127 | if (ret_val) | |
3128 | return ret_val; | |
3129 | ||
3130 | phy_info->cable_polarity = polarity; | |
3131 | ||
3132 | ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_STATUS, &phy_data); | |
3133 | if (ret_val) | |
3134 | return ret_val; | |
3135 | ||
3136 | phy_info->mdix_mode = | |
3137 | (e1000_auto_x_mode) ((phy_data & IGP01E1000_PSSR_MDIX) >> | |
3138 | IGP01E1000_PSSR_MDIX_SHIFT); | |
3139 | ||
3140 | if ((phy_data & IGP01E1000_PSSR_SPEED_MASK) == | |
3141 | IGP01E1000_PSSR_SPEED_1000MBPS) { | |
3142 | /* Local/Remote Receiver Information are only valid at 1000 Mbps */ | |
3143 | ret_val = e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_data); | |
3144 | if (ret_val) | |
3145 | return ret_val; | |
3146 | ||
3147 | phy_info->local_rx = ((phy_data & SR_1000T_LOCAL_RX_STATUS) >> | |
3148 | SR_1000T_LOCAL_RX_STATUS_SHIFT) ? | |
3149 | e1000_1000t_rx_status_ok : e1000_1000t_rx_status_not_ok; | |
3150 | phy_info->remote_rx = ((phy_data & SR_1000T_REMOTE_RX_STATUS) >> | |
3151 | SR_1000T_REMOTE_RX_STATUS_SHIFT) ? | |
3152 | e1000_1000t_rx_status_ok : e1000_1000t_rx_status_not_ok; | |
3153 | ||
3154 | /* Get cable length */ | |
3155 | ret_val = e1000_get_cable_length(hw, &min_length, &max_length); | |
3156 | if (ret_val) | |
3157 | return ret_val; | |
3158 | ||
3159 | /* Translate to old method */ | |
3160 | average = (max_length + min_length) / 2; | |
3161 | ||
3162 | if (average <= e1000_igp_cable_length_50) | |
3163 | phy_info->cable_length = e1000_cable_length_50; | |
3164 | else if (average <= e1000_igp_cable_length_80) | |
3165 | phy_info->cable_length = e1000_cable_length_50_80; | |
3166 | else if (average <= e1000_igp_cable_length_110) | |
3167 | phy_info->cable_length = e1000_cable_length_80_110; | |
3168 | else if (average <= e1000_igp_cable_length_140) | |
3169 | phy_info->cable_length = e1000_cable_length_110_140; | |
3170 | else | |
3171 | phy_info->cable_length = e1000_cable_length_140; | |
3172 | } | |
1da177e4 | 3173 | |
120a5d0d JB |
3174 | return E1000_SUCCESS; |
3175 | } | |
d37ea5d5 | 3176 | |
120a5d0d JB |
3177 | /** |
3178 | * e1000_phy_m88_get_info - get m88 specific registers | |
3179 | * @hw: Struct containing variables accessed by shared code | |
3180 | * @phy_info: PHY information structure | |
3181 | * | |
3182 | * Get PHY information from various PHY registers for m88 PHY only. | |
3183 | */ | |
64798845 JP |
3184 | static s32 e1000_phy_m88_get_info(struct e1000_hw *hw, |
3185 | struct e1000_phy_info *phy_info) | |
1da177e4 | 3186 | { |
120a5d0d JB |
3187 | s32 ret_val; |
3188 | u16 phy_data; | |
3189 | e1000_rev_polarity polarity; | |
3190 | ||
675ad473 | 3191 | e_dbg("e1000_phy_m88_get_info"); |
120a5d0d JB |
3192 | |
3193 | /* The downshift status is checked only once, after link is established, | |
3194 | * and it stored in the hw->speed_downgraded parameter. */ | |
3195 | phy_info->downshift = (e1000_downshift) hw->speed_downgraded; | |
3196 | ||
3197 | ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data); | |
3198 | if (ret_val) | |
3199 | return ret_val; | |
3200 | ||
3201 | phy_info->extended_10bt_distance = | |
3202 | ((phy_data & M88E1000_PSCR_10BT_EXT_DIST_ENABLE) >> | |
3203 | M88E1000_PSCR_10BT_EXT_DIST_ENABLE_SHIFT) ? | |
3204 | e1000_10bt_ext_dist_enable_lower : | |
3205 | e1000_10bt_ext_dist_enable_normal; | |
3206 | ||
3207 | phy_info->polarity_correction = | |
3208 | ((phy_data & M88E1000_PSCR_POLARITY_REVERSAL) >> | |
3209 | M88E1000_PSCR_POLARITY_REVERSAL_SHIFT) ? | |
3210 | e1000_polarity_reversal_disabled : e1000_polarity_reversal_enabled; | |
3211 | ||
3212 | /* Check polarity status */ | |
3213 | ret_val = e1000_check_polarity(hw, &polarity); | |
3214 | if (ret_val) | |
3215 | return ret_val; | |
3216 | phy_info->cable_polarity = polarity; | |
3217 | ||
3218 | ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS, &phy_data); | |
3219 | if (ret_val) | |
3220 | return ret_val; | |
3221 | ||
3222 | phy_info->mdix_mode = | |
3223 | (e1000_auto_x_mode) ((phy_data & M88E1000_PSSR_MDIX) >> | |
3224 | M88E1000_PSSR_MDIX_SHIFT); | |
3225 | ||
3226 | if ((phy_data & M88E1000_PSSR_SPEED) == M88E1000_PSSR_1000MBS) { | |
3227 | /* Cable Length Estimation and Local/Remote Receiver Information | |
3228 | * are only valid at 1000 Mbps. | |
3229 | */ | |
3230 | phy_info->cable_length = | |
3231 | (e1000_cable_length) ((phy_data & | |
3232 | M88E1000_PSSR_CABLE_LENGTH) >> | |
3233 | M88E1000_PSSR_CABLE_LENGTH_SHIFT); | |
3234 | ||
3235 | ret_val = e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_data); | |
3236 | if (ret_val) | |
3237 | return ret_val; | |
3238 | ||
3239 | phy_info->local_rx = ((phy_data & SR_1000T_LOCAL_RX_STATUS) >> | |
3240 | SR_1000T_LOCAL_RX_STATUS_SHIFT) ? | |
3241 | e1000_1000t_rx_status_ok : e1000_1000t_rx_status_not_ok; | |
3242 | phy_info->remote_rx = ((phy_data & SR_1000T_REMOTE_RX_STATUS) >> | |
3243 | SR_1000T_REMOTE_RX_STATUS_SHIFT) ? | |
3244 | e1000_1000t_rx_status_ok : e1000_1000t_rx_status_not_ok; | |
3245 | ||
3246 | } | |
3247 | ||
3248 | return E1000_SUCCESS; | |
1da177e4 LT |
3249 | } |
3250 | ||
120a5d0d JB |
3251 | /** |
3252 | * e1000_phy_get_info - request phy info | |
3253 | * @hw: Struct containing variables accessed by shared code | |
3254 | * @phy_info: PHY information structure | |
3255 | * | |
3256 | * Get PHY information from various PHY registers | |
3257 | */ | |
64798845 | 3258 | s32 e1000_phy_get_info(struct e1000_hw *hw, struct e1000_phy_info *phy_info) |
1da177e4 | 3259 | { |
120a5d0d JB |
3260 | s32 ret_val; |
3261 | u16 phy_data; | |
3262 | ||
675ad473 | 3263 | e_dbg("e1000_phy_get_info"); |
120a5d0d JB |
3264 | |
3265 | phy_info->cable_length = e1000_cable_length_undefined; | |
3266 | phy_info->extended_10bt_distance = e1000_10bt_ext_dist_enable_undefined; | |
3267 | phy_info->cable_polarity = e1000_rev_polarity_undefined; | |
3268 | phy_info->downshift = e1000_downshift_undefined; | |
3269 | phy_info->polarity_correction = e1000_polarity_reversal_undefined; | |
3270 | phy_info->mdix_mode = e1000_auto_x_mode_undefined; | |
3271 | phy_info->local_rx = e1000_1000t_rx_status_undefined; | |
3272 | phy_info->remote_rx = e1000_1000t_rx_status_undefined; | |
3273 | ||
3274 | if (hw->media_type != e1000_media_type_copper) { | |
675ad473 | 3275 | e_dbg("PHY info is only valid for copper media\n"); |
120a5d0d JB |
3276 | return -E1000_ERR_CONFIG; |
3277 | } | |
3278 | ||
3279 | ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data); | |
3280 | if (ret_val) | |
3281 | return ret_val; | |
3282 | ||
3283 | ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data); | |
3284 | if (ret_val) | |
3285 | return ret_val; | |
3286 | ||
3287 | if ((phy_data & MII_SR_LINK_STATUS) != MII_SR_LINK_STATUS) { | |
675ad473 | 3288 | e_dbg("PHY info is only valid if link is up\n"); |
120a5d0d JB |
3289 | return -E1000_ERR_CONFIG; |
3290 | } | |
3291 | ||
3292 | if (hw->phy_type == e1000_phy_igp) | |
3293 | return e1000_phy_igp_get_info(hw, phy_info); | |
3294 | else | |
3295 | return e1000_phy_m88_get_info(hw, phy_info); | |
1da177e4 LT |
3296 | } |
3297 | ||
64798845 | 3298 | s32 e1000_validate_mdi_setting(struct e1000_hw *hw) |
1da177e4 | 3299 | { |
675ad473 | 3300 | e_dbg("e1000_validate_mdi_settings"); |
1da177e4 | 3301 | |
120a5d0d | 3302 | if (!hw->autoneg && (hw->mdix == 0 || hw->mdix == 3)) { |
675ad473 | 3303 | e_dbg("Invalid MDI setting detected\n"); |
120a5d0d JB |
3304 | hw->mdix = 1; |
3305 | return -E1000_ERR_CONFIG; | |
3306 | } | |
3307 | return E1000_SUCCESS; | |
3308 | } | |
1da177e4 | 3309 | |
120a5d0d JB |
3310 | /** |
3311 | * e1000_init_eeprom_params - initialize sw eeprom vars | |
3312 | * @hw: Struct containing variables accessed by shared code | |
3313 | * | |
1da177e4 | 3314 | * Sets up eeprom variables in the hw struct. Must be called after mac_type |
1532ecea | 3315 | * is configured. |
120a5d0d | 3316 | */ |
64798845 | 3317 | s32 e1000_init_eeprom_params(struct e1000_hw *hw) |
1da177e4 | 3318 | { |
120a5d0d JB |
3319 | struct e1000_eeprom_info *eeprom = &hw->eeprom; |
3320 | u32 eecd = er32(EECD); | |
3321 | s32 ret_val = E1000_SUCCESS; | |
3322 | u16 eeprom_size; | |
3323 | ||
675ad473 | 3324 | e_dbg("e1000_init_eeprom_params"); |
120a5d0d JB |
3325 | |
3326 | switch (hw->mac_type) { | |
3327 | case e1000_82542_rev2_0: | |
3328 | case e1000_82542_rev2_1: | |
3329 | case e1000_82543: | |
3330 | case e1000_82544: | |
3331 | eeprom->type = e1000_eeprom_microwire; | |
3332 | eeprom->word_size = 64; | |
3333 | eeprom->opcode_bits = 3; | |
3334 | eeprom->address_bits = 6; | |
3335 | eeprom->delay_usec = 50; | |
120a5d0d JB |
3336 | break; |
3337 | case e1000_82540: | |
3338 | case e1000_82545: | |
3339 | case e1000_82545_rev_3: | |
3340 | case e1000_82546: | |
3341 | case e1000_82546_rev_3: | |
3342 | eeprom->type = e1000_eeprom_microwire; | |
3343 | eeprom->opcode_bits = 3; | |
3344 | eeprom->delay_usec = 50; | |
3345 | if (eecd & E1000_EECD_SIZE) { | |
3346 | eeprom->word_size = 256; | |
3347 | eeprom->address_bits = 8; | |
3348 | } else { | |
3349 | eeprom->word_size = 64; | |
3350 | eeprom->address_bits = 6; | |
3351 | } | |
120a5d0d JB |
3352 | break; |
3353 | case e1000_82541: | |
3354 | case e1000_82541_rev_2: | |
3355 | case e1000_82547: | |
3356 | case e1000_82547_rev_2: | |
3357 | if (eecd & E1000_EECD_TYPE) { | |
3358 | eeprom->type = e1000_eeprom_spi; | |
3359 | eeprom->opcode_bits = 8; | |
3360 | eeprom->delay_usec = 1; | |
3361 | if (eecd & E1000_EECD_ADDR_BITS) { | |
3362 | eeprom->page_size = 32; | |
3363 | eeprom->address_bits = 16; | |
3364 | } else { | |
3365 | eeprom->page_size = 8; | |
3366 | eeprom->address_bits = 8; | |
3367 | } | |
3368 | } else { | |
3369 | eeprom->type = e1000_eeprom_microwire; | |
3370 | eeprom->opcode_bits = 3; | |
3371 | eeprom->delay_usec = 50; | |
3372 | if (eecd & E1000_EECD_ADDR_BITS) { | |
3373 | eeprom->word_size = 256; | |
3374 | eeprom->address_bits = 8; | |
3375 | } else { | |
3376 | eeprom->word_size = 64; | |
3377 | eeprom->address_bits = 6; | |
3378 | } | |
3379 | } | |
120a5d0d JB |
3380 | break; |
3381 | default: | |
3382 | break; | |
3383 | } | |
3384 | ||
3385 | if (eeprom->type == e1000_eeprom_spi) { | |
3386 | /* eeprom_size will be an enum [0..8] that maps to eeprom sizes 128B to | |
3387 | * 32KB (incremented by powers of 2). | |
3388 | */ | |
3389 | /* Set to default value for initial eeprom read. */ | |
3390 | eeprom->word_size = 64; | |
3391 | ret_val = e1000_read_eeprom(hw, EEPROM_CFG, 1, &eeprom_size); | |
3392 | if (ret_val) | |
3393 | return ret_val; | |
3394 | eeprom_size = | |
3395 | (eeprom_size & EEPROM_SIZE_MASK) >> EEPROM_SIZE_SHIFT; | |
3396 | /* 256B eeprom size was not supported in earlier hardware, so we | |
3397 | * bump eeprom_size up one to ensure that "1" (which maps to 256B) | |
3398 | * is never the result used in the shifting logic below. */ | |
3399 | if (eeprom_size) | |
3400 | eeprom_size++; | |
3401 | ||
3402 | eeprom->word_size = 1 << (eeprom_size + EEPROM_WORD_SIZE_SHIFT); | |
3403 | } | |
3404 | return ret_val; | |
1da177e4 LT |
3405 | } |
3406 | ||
120a5d0d JB |
3407 | /** |
3408 | * e1000_raise_ee_clk - Raises the EEPROM's clock input. | |
3409 | * @hw: Struct containing variables accessed by shared code | |
3410 | * @eecd: EECD's current value | |
3411 | */ | |
64798845 | 3412 | static void e1000_raise_ee_clk(struct e1000_hw *hw, u32 *eecd) |
1da177e4 | 3413 | { |
120a5d0d JB |
3414 | /* Raise the clock input to the EEPROM (by setting the SK bit), and then |
3415 | * wait <delay> microseconds. | |
3416 | */ | |
3417 | *eecd = *eecd | E1000_EECD_SK; | |
3418 | ew32(EECD, *eecd); | |
3419 | E1000_WRITE_FLUSH(); | |
3420 | udelay(hw->eeprom.delay_usec); | |
1da177e4 LT |
3421 | } |
3422 | ||
120a5d0d JB |
3423 | /** |
3424 | * e1000_lower_ee_clk - Lowers the EEPROM's clock input. | |
3425 | * @hw: Struct containing variables accessed by shared code | |
3426 | * @eecd: EECD's current value | |
3427 | */ | |
64798845 | 3428 | static void e1000_lower_ee_clk(struct e1000_hw *hw, u32 *eecd) |
1da177e4 | 3429 | { |
120a5d0d JB |
3430 | /* Lower the clock input to the EEPROM (by clearing the SK bit), and then |
3431 | * wait 50 microseconds. | |
3432 | */ | |
3433 | *eecd = *eecd & ~E1000_EECD_SK; | |
3434 | ew32(EECD, *eecd); | |
3435 | E1000_WRITE_FLUSH(); | |
3436 | udelay(hw->eeprom.delay_usec); | |
1da177e4 LT |
3437 | } |
3438 | ||
120a5d0d JB |
3439 | /** |
3440 | * e1000_shift_out_ee_bits - Shift data bits out to the EEPROM. | |
3441 | * @hw: Struct containing variables accessed by shared code | |
3442 | * @data: data to send to the EEPROM | |
3443 | * @count: number of bits to shift out | |
3444 | */ | |
64798845 | 3445 | static void e1000_shift_out_ee_bits(struct e1000_hw *hw, u16 data, u16 count) |
1da177e4 | 3446 | { |
120a5d0d JB |
3447 | struct e1000_eeprom_info *eeprom = &hw->eeprom; |
3448 | u32 eecd; | |
3449 | u32 mask; | |
3450 | ||
3451 | /* We need to shift "count" bits out to the EEPROM. So, value in the | |
3452 | * "data" parameter will be shifted out to the EEPROM one bit at a time. | |
3453 | * In order to do this, "data" must be broken down into bits. | |
3454 | */ | |
3455 | mask = 0x01 << (count - 1); | |
3456 | eecd = er32(EECD); | |
3457 | if (eeprom->type == e1000_eeprom_microwire) { | |
3458 | eecd &= ~E1000_EECD_DO; | |
3459 | } else if (eeprom->type == e1000_eeprom_spi) { | |
3460 | eecd |= E1000_EECD_DO; | |
3461 | } | |
3462 | do { | |
3463 | /* A "1" is shifted out to the EEPROM by setting bit "DI" to a "1", | |
3464 | * and then raising and then lowering the clock (the SK bit controls | |
3465 | * the clock input to the EEPROM). A "0" is shifted out to the EEPROM | |
3466 | * by setting "DI" to "0" and then raising and then lowering the clock. | |
3467 | */ | |
3468 | eecd &= ~E1000_EECD_DI; | |
3469 | ||
3470 | if (data & mask) | |
3471 | eecd |= E1000_EECD_DI; | |
3472 | ||
3473 | ew32(EECD, eecd); | |
3474 | E1000_WRITE_FLUSH(); | |
3475 | ||
3476 | udelay(eeprom->delay_usec); | |
3477 | ||
3478 | e1000_raise_ee_clk(hw, &eecd); | |
3479 | e1000_lower_ee_clk(hw, &eecd); | |
3480 | ||
3481 | mask = mask >> 1; | |
3482 | ||
3483 | } while (mask); | |
3484 | ||
3485 | /* We leave the "DI" bit set to "0" when we leave this routine. */ | |
3486 | eecd &= ~E1000_EECD_DI; | |
3487 | ew32(EECD, eecd); | |
1da177e4 LT |
3488 | } |
3489 | ||
120a5d0d JB |
3490 | /** |
3491 | * e1000_shift_in_ee_bits - Shift data bits in from the EEPROM | |
3492 | * @hw: Struct containing variables accessed by shared code | |
3493 | * @count: number of bits to shift in | |
3494 | */ | |
64798845 | 3495 | static u16 e1000_shift_in_ee_bits(struct e1000_hw *hw, u16 count) |
1da177e4 | 3496 | { |
120a5d0d JB |
3497 | u32 eecd; |
3498 | u32 i; | |
3499 | u16 data; | |
3500 | ||
3501 | /* In order to read a register from the EEPROM, we need to shift 'count' | |
3502 | * bits in from the EEPROM. Bits are "shifted in" by raising the clock | |
3503 | * input to the EEPROM (setting the SK bit), and then reading the value of | |
3504 | * the "DO" bit. During this "shifting in" process the "DI" bit should | |
3505 | * always be clear. | |
3506 | */ | |
1da177e4 | 3507 | |
120a5d0d | 3508 | eecd = er32(EECD); |
1da177e4 | 3509 | |
120a5d0d JB |
3510 | eecd &= ~(E1000_EECD_DO | E1000_EECD_DI); |
3511 | data = 0; | |
1da177e4 | 3512 | |
120a5d0d JB |
3513 | for (i = 0; i < count; i++) { |
3514 | data = data << 1; | |
3515 | e1000_raise_ee_clk(hw, &eecd); | |
1da177e4 | 3516 | |
120a5d0d | 3517 | eecd = er32(EECD); |
1da177e4 | 3518 | |
120a5d0d JB |
3519 | eecd &= ~(E1000_EECD_DI); |
3520 | if (eecd & E1000_EECD_DO) | |
3521 | data |= 1; | |
1da177e4 | 3522 | |
120a5d0d JB |
3523 | e1000_lower_ee_clk(hw, &eecd); |
3524 | } | |
1da177e4 | 3525 | |
120a5d0d | 3526 | return data; |
1da177e4 LT |
3527 | } |
3528 | ||
120a5d0d JB |
3529 | /** |
3530 | * e1000_acquire_eeprom - Prepares EEPROM for access | |
3531 | * @hw: Struct containing variables accessed by shared code | |
1da177e4 LT |
3532 | * |
3533 | * Lowers EEPROM clock. Clears input pin. Sets the chip select pin. This | |
3534 | * function should be called before issuing a command to the EEPROM. | |
120a5d0d | 3535 | */ |
64798845 | 3536 | static s32 e1000_acquire_eeprom(struct e1000_hw *hw) |
1da177e4 | 3537 | { |
120a5d0d JB |
3538 | struct e1000_eeprom_info *eeprom = &hw->eeprom; |
3539 | u32 eecd, i = 0; | |
3540 | ||
675ad473 | 3541 | e_dbg("e1000_acquire_eeprom"); |
120a5d0d JB |
3542 | |
3543 | eecd = er32(EECD); | |
3544 | ||
3545 | /* Request EEPROM Access */ | |
3546 | if (hw->mac_type > e1000_82544) { | |
3547 | eecd |= E1000_EECD_REQ; | |
3548 | ew32(EECD, eecd); | |
3549 | eecd = er32(EECD); | |
3550 | while ((!(eecd & E1000_EECD_GNT)) && | |
3551 | (i < E1000_EEPROM_GRANT_ATTEMPTS)) { | |
3552 | i++; | |
3553 | udelay(5); | |
3554 | eecd = er32(EECD); | |
3555 | } | |
3556 | if (!(eecd & E1000_EECD_GNT)) { | |
3557 | eecd &= ~E1000_EECD_REQ; | |
3558 | ew32(EECD, eecd); | |
675ad473 | 3559 | e_dbg("Could not acquire EEPROM grant\n"); |
120a5d0d JB |
3560 | return -E1000_ERR_EEPROM; |
3561 | } | |
3562 | } | |
3563 | ||
3564 | /* Setup EEPROM for Read/Write */ | |
3565 | ||
3566 | if (eeprom->type == e1000_eeprom_microwire) { | |
3567 | /* Clear SK and DI */ | |
3568 | eecd &= ~(E1000_EECD_DI | E1000_EECD_SK); | |
3569 | ew32(EECD, eecd); | |
3570 | ||
3571 | /* Set CS */ | |
3572 | eecd |= E1000_EECD_CS; | |
3573 | ew32(EECD, eecd); | |
3574 | } else if (eeprom->type == e1000_eeprom_spi) { | |
3575 | /* Clear SK and CS */ | |
3576 | eecd &= ~(E1000_EECD_CS | E1000_EECD_SK); | |
3577 | ew32(EECD, eecd); | |
3578 | udelay(1); | |
3579 | } | |
3580 | ||
3581 | return E1000_SUCCESS; | |
1da177e4 LT |
3582 | } |
3583 | ||
120a5d0d JB |
3584 | /** |
3585 | * e1000_standby_eeprom - Returns EEPROM to a "standby" state | |
3586 | * @hw: Struct containing variables accessed by shared code | |
3587 | */ | |
64798845 | 3588 | static void e1000_standby_eeprom(struct e1000_hw *hw) |
1da177e4 | 3589 | { |
120a5d0d JB |
3590 | struct e1000_eeprom_info *eeprom = &hw->eeprom; |
3591 | u32 eecd; | |
3592 | ||
3593 | eecd = er32(EECD); | |
3594 | ||
3595 | if (eeprom->type == e1000_eeprom_microwire) { | |
3596 | eecd &= ~(E1000_EECD_CS | E1000_EECD_SK); | |
3597 | ew32(EECD, eecd); | |
3598 | E1000_WRITE_FLUSH(); | |
3599 | udelay(eeprom->delay_usec); | |
3600 | ||
3601 | /* Clock high */ | |
3602 | eecd |= E1000_EECD_SK; | |
3603 | ew32(EECD, eecd); | |
3604 | E1000_WRITE_FLUSH(); | |
3605 | udelay(eeprom->delay_usec); | |
3606 | ||
3607 | /* Select EEPROM */ | |
3608 | eecd |= E1000_EECD_CS; | |
3609 | ew32(EECD, eecd); | |
3610 | E1000_WRITE_FLUSH(); | |
3611 | udelay(eeprom->delay_usec); | |
3612 | ||
3613 | /* Clock low */ | |
3614 | eecd &= ~E1000_EECD_SK; | |
3615 | ew32(EECD, eecd); | |
3616 | E1000_WRITE_FLUSH(); | |
3617 | udelay(eeprom->delay_usec); | |
3618 | } else if (eeprom->type == e1000_eeprom_spi) { | |
3619 | /* Toggle CS to flush commands */ | |
3620 | eecd |= E1000_EECD_CS; | |
3621 | ew32(EECD, eecd); | |
3622 | E1000_WRITE_FLUSH(); | |
3623 | udelay(eeprom->delay_usec); | |
3624 | eecd &= ~E1000_EECD_CS; | |
3625 | ew32(EECD, eecd); | |
3626 | E1000_WRITE_FLUSH(); | |
3627 | udelay(eeprom->delay_usec); | |
3628 | } | |
1da177e4 LT |
3629 | } |
3630 | ||
120a5d0d JB |
3631 | /** |
3632 | * e1000_release_eeprom - drop chip select | |
3633 | * @hw: Struct containing variables accessed by shared code | |
1da177e4 | 3634 | * |
120a5d0d JB |
3635 | * Terminates a command by inverting the EEPROM's chip select pin |
3636 | */ | |
64798845 | 3637 | static void e1000_release_eeprom(struct e1000_hw *hw) |
1da177e4 | 3638 | { |
120a5d0d | 3639 | u32 eecd; |
1da177e4 | 3640 | |
675ad473 | 3641 | e_dbg("e1000_release_eeprom"); |
1da177e4 | 3642 | |
120a5d0d | 3643 | eecd = er32(EECD); |
1da177e4 | 3644 | |
120a5d0d JB |
3645 | if (hw->eeprom.type == e1000_eeprom_spi) { |
3646 | eecd |= E1000_EECD_CS; /* Pull CS high */ | |
3647 | eecd &= ~E1000_EECD_SK; /* Lower SCK */ | |
1da177e4 | 3648 | |
120a5d0d | 3649 | ew32(EECD, eecd); |
1da177e4 | 3650 | |
120a5d0d JB |
3651 | udelay(hw->eeprom.delay_usec); |
3652 | } else if (hw->eeprom.type == e1000_eeprom_microwire) { | |
3653 | /* cleanup eeprom */ | |
1da177e4 | 3654 | |
120a5d0d JB |
3655 | /* CS on Microwire is active-high */ |
3656 | eecd &= ~(E1000_EECD_CS | E1000_EECD_DI); | |
1da177e4 | 3657 | |
120a5d0d | 3658 | ew32(EECD, eecd); |
1da177e4 | 3659 | |
120a5d0d JB |
3660 | /* Rising edge of clock */ |
3661 | eecd |= E1000_EECD_SK; | |
3662 | ew32(EECD, eecd); | |
3663 | E1000_WRITE_FLUSH(); | |
3664 | udelay(hw->eeprom.delay_usec); | |
1da177e4 | 3665 | |
120a5d0d JB |
3666 | /* Falling edge of clock */ |
3667 | eecd &= ~E1000_EECD_SK; | |
3668 | ew32(EECD, eecd); | |
3669 | E1000_WRITE_FLUSH(); | |
3670 | udelay(hw->eeprom.delay_usec); | |
3671 | } | |
1da177e4 | 3672 | |
120a5d0d JB |
3673 | /* Stop requesting EEPROM access */ |
3674 | if (hw->mac_type > e1000_82544) { | |
3675 | eecd &= ~E1000_EECD_REQ; | |
3676 | ew32(EECD, eecd); | |
3677 | } | |
1da177e4 LT |
3678 | } |
3679 | ||
120a5d0d JB |
3680 | /** |
3681 | * e1000_spi_eeprom_ready - Reads a 16 bit word from the EEPROM. | |
3682 | * @hw: Struct containing variables accessed by shared code | |
3683 | */ | |
64798845 | 3684 | static s32 e1000_spi_eeprom_ready(struct e1000_hw *hw) |
1da177e4 | 3685 | { |
120a5d0d JB |
3686 | u16 retry_count = 0; |
3687 | u8 spi_stat_reg; | |
3688 | ||
675ad473 | 3689 | e_dbg("e1000_spi_eeprom_ready"); |
120a5d0d JB |
3690 | |
3691 | /* Read "Status Register" repeatedly until the LSB is cleared. The | |
3692 | * EEPROM will signal that the command has been completed by clearing | |
3693 | * bit 0 of the internal status register. If it's not cleared within | |
3694 | * 5 milliseconds, then error out. | |
3695 | */ | |
3696 | retry_count = 0; | |
3697 | do { | |
3698 | e1000_shift_out_ee_bits(hw, EEPROM_RDSR_OPCODE_SPI, | |
3699 | hw->eeprom.opcode_bits); | |
3700 | spi_stat_reg = (u8) e1000_shift_in_ee_bits(hw, 8); | |
3701 | if (!(spi_stat_reg & EEPROM_STATUS_RDY_SPI)) | |
3702 | break; | |
3703 | ||
3704 | udelay(5); | |
3705 | retry_count += 5; | |
3706 | ||
3707 | e1000_standby_eeprom(hw); | |
3708 | } while (retry_count < EEPROM_MAX_RETRY_SPI); | |
3709 | ||
3710 | /* ATMEL SPI write time could vary from 0-20mSec on 3.3V devices (and | |
3711 | * only 0-5mSec on 5V devices) | |
3712 | */ | |
3713 | if (retry_count >= EEPROM_MAX_RETRY_SPI) { | |
675ad473 | 3714 | e_dbg("SPI EEPROM Status error\n"); |
120a5d0d JB |
3715 | return -E1000_ERR_EEPROM; |
3716 | } | |
3717 | ||
3718 | return E1000_SUCCESS; | |
1da177e4 LT |
3719 | } |
3720 | ||
120a5d0d JB |
3721 | /** |
3722 | * e1000_read_eeprom - Reads a 16 bit word from the EEPROM. | |
3723 | * @hw: Struct containing variables accessed by shared code | |
3724 | * @offset: offset of word in the EEPROM to read | |
3725 | * @data: word read from the EEPROM | |
3726 | * @words: number of words to read | |
3727 | */ | |
64798845 | 3728 | s32 e1000_read_eeprom(struct e1000_hw *hw, u16 offset, u16 words, u16 *data) |
78566fec | 3729 | { |
120a5d0d JB |
3730 | s32 ret; |
3731 | spin_lock(&e1000_eeprom_lock); | |
3732 | ret = e1000_do_read_eeprom(hw, offset, words, data); | |
3733 | spin_unlock(&e1000_eeprom_lock); | |
3734 | return ret; | |
78566fec CL |
3735 | } |
3736 | ||
120a5d0d JB |
3737 | static s32 e1000_do_read_eeprom(struct e1000_hw *hw, u16 offset, u16 words, |
3738 | u16 *data) | |
1da177e4 | 3739 | { |
120a5d0d JB |
3740 | struct e1000_eeprom_info *eeprom = &hw->eeprom; |
3741 | u32 i = 0; | |
3742 | ||
675ad473 | 3743 | e_dbg("e1000_read_eeprom"); |
120a5d0d JB |
3744 | |
3745 | /* If eeprom is not yet detected, do so now */ | |
3746 | if (eeprom->word_size == 0) | |
3747 | e1000_init_eeprom_params(hw); | |
3748 | ||
3749 | /* A check for invalid values: offset too large, too many words, and not | |
3750 | * enough words. | |
3751 | */ | |
3752 | if ((offset >= eeprom->word_size) | |
3753 | || (words > eeprom->word_size - offset) || (words == 0)) { | |
675ad473 ET |
3754 | e_dbg("\"words\" parameter out of bounds. Words = %d," |
3755 | "size = %d\n", offset, eeprom->word_size); | |
120a5d0d JB |
3756 | return -E1000_ERR_EEPROM; |
3757 | } | |
3758 | ||
3759 | /* EEPROM's that don't use EERD to read require us to bit-bang the SPI | |
3760 | * directly. In this case, we need to acquire the EEPROM so that | |
3761 | * FW or other port software does not interrupt. | |
3762 | */ | |
8f601b2d JB |
3763 | /* Prepare the EEPROM for bit-bang reading */ |
3764 | if (e1000_acquire_eeprom(hw) != E1000_SUCCESS) | |
3765 | return -E1000_ERR_EEPROM; | |
120a5d0d JB |
3766 | |
3767 | /* Set up the SPI or Microwire EEPROM for bit-bang reading. We have | |
3768 | * acquired the EEPROM at this point, so any returns should release it */ | |
3769 | if (eeprom->type == e1000_eeprom_spi) { | |
3770 | u16 word_in; | |
3771 | u8 read_opcode = EEPROM_READ_OPCODE_SPI; | |
3772 | ||
3773 | if (e1000_spi_eeprom_ready(hw)) { | |
3774 | e1000_release_eeprom(hw); | |
3775 | return -E1000_ERR_EEPROM; | |
3776 | } | |
3777 | ||
3778 | e1000_standby_eeprom(hw); | |
3779 | ||
3780 | /* Some SPI eeproms use the 8th address bit embedded in the opcode */ | |
3781 | if ((eeprom->address_bits == 8) && (offset >= 128)) | |
3782 | read_opcode |= EEPROM_A8_OPCODE_SPI; | |
3783 | ||
3784 | /* Send the READ command (opcode + addr) */ | |
3785 | e1000_shift_out_ee_bits(hw, read_opcode, eeprom->opcode_bits); | |
3786 | e1000_shift_out_ee_bits(hw, (u16) (offset * 2), | |
3787 | eeprom->address_bits); | |
3788 | ||
3789 | /* Read the data. The address of the eeprom internally increments with | |
3790 | * each byte (spi) being read, saving on the overhead of eeprom setup | |
3791 | * and tear-down. The address counter will roll over if reading beyond | |
3792 | * the size of the eeprom, thus allowing the entire memory to be read | |
3793 | * starting from any offset. */ | |
3794 | for (i = 0; i < words; i++) { | |
3795 | word_in = e1000_shift_in_ee_bits(hw, 16); | |
3796 | data[i] = (word_in >> 8) | (word_in << 8); | |
3797 | } | |
3798 | } else if (eeprom->type == e1000_eeprom_microwire) { | |
3799 | for (i = 0; i < words; i++) { | |
3800 | /* Send the READ command (opcode + addr) */ | |
3801 | e1000_shift_out_ee_bits(hw, | |
3802 | EEPROM_READ_OPCODE_MICROWIRE, | |
3803 | eeprom->opcode_bits); | |
3804 | e1000_shift_out_ee_bits(hw, (u16) (offset + i), | |
3805 | eeprom->address_bits); | |
3806 | ||
3807 | /* Read the data. For microwire, each word requires the overhead | |
3808 | * of eeprom setup and tear-down. */ | |
3809 | data[i] = e1000_shift_in_ee_bits(hw, 16); | |
3810 | e1000_standby_eeprom(hw); | |
3811 | } | |
3812 | } | |
3813 | ||
3814 | /* End this read operation */ | |
3815 | e1000_release_eeprom(hw); | |
3816 | ||
3817 | return E1000_SUCCESS; | |
1da177e4 LT |
3818 | } |
3819 | ||
120a5d0d JB |
3820 | /** |
3821 | * e1000_validate_eeprom_checksum - Verifies that the EEPROM has a valid checksum | |
3822 | * @hw: Struct containing variables accessed by shared code | |
2d7edb92 MC |
3823 | * |
3824 | * Reads the first 64 16 bit words of the EEPROM and sums the values read. | |
3825 | * If the the sum of the 64 16 bit words is 0xBABA, the EEPROM's checksum is | |
3826 | * valid. | |
120a5d0d | 3827 | */ |
64798845 | 3828 | s32 e1000_validate_eeprom_checksum(struct e1000_hw *hw) |
2d7edb92 | 3829 | { |
120a5d0d JB |
3830 | u16 checksum = 0; |
3831 | u16 i, eeprom_data; | |
3832 | ||
675ad473 | 3833 | e_dbg("e1000_validate_eeprom_checksum"); |
120a5d0d JB |
3834 | |
3835 | for (i = 0; i < (EEPROM_CHECKSUM_REG + 1); i++) { | |
3836 | if (e1000_read_eeprom(hw, i, 1, &eeprom_data) < 0) { | |
675ad473 | 3837 | e_dbg("EEPROM Read Error\n"); |
120a5d0d JB |
3838 | return -E1000_ERR_EEPROM; |
3839 | } | |
3840 | checksum += eeprom_data; | |
3841 | } | |
3842 | ||
3843 | if (checksum == (u16) EEPROM_SUM) | |
3844 | return E1000_SUCCESS; | |
3845 | else { | |
675ad473 | 3846 | e_dbg("EEPROM Checksum Invalid\n"); |
120a5d0d JB |
3847 | return -E1000_ERR_EEPROM; |
3848 | } | |
2d7edb92 MC |
3849 | } |
3850 | ||
120a5d0d JB |
3851 | /** |
3852 | * e1000_update_eeprom_checksum - Calculates/writes the EEPROM checksum | |
3853 | * @hw: Struct containing variables accessed by shared code | |
2d7edb92 MC |
3854 | * |
3855 | * Sums the first 63 16 bit words of the EEPROM. Subtracts the sum from 0xBABA. | |
3856 | * Writes the difference to word offset 63 of the EEPROM. | |
120a5d0d | 3857 | */ |
64798845 | 3858 | s32 e1000_update_eeprom_checksum(struct e1000_hw *hw) |
2d7edb92 | 3859 | { |
120a5d0d JB |
3860 | u16 checksum = 0; |
3861 | u16 i, eeprom_data; | |
3862 | ||
675ad473 | 3863 | e_dbg("e1000_update_eeprom_checksum"); |
120a5d0d JB |
3864 | |
3865 | for (i = 0; i < EEPROM_CHECKSUM_REG; i++) { | |
3866 | if (e1000_read_eeprom(hw, i, 1, &eeprom_data) < 0) { | |
675ad473 | 3867 | e_dbg("EEPROM Read Error\n"); |
120a5d0d JB |
3868 | return -E1000_ERR_EEPROM; |
3869 | } | |
3870 | checksum += eeprom_data; | |
3871 | } | |
3872 | checksum = (u16) EEPROM_SUM - checksum; | |
3873 | if (e1000_write_eeprom(hw, EEPROM_CHECKSUM_REG, 1, &checksum) < 0) { | |
675ad473 | 3874 | e_dbg("EEPROM Write Error\n"); |
120a5d0d JB |
3875 | return -E1000_ERR_EEPROM; |
3876 | } | |
3877 | return E1000_SUCCESS; | |
1da177e4 LT |
3878 | } |
3879 | ||
120a5d0d JB |
3880 | /** |
3881 | * e1000_write_eeprom - write words to the different EEPROM types. | |
3882 | * @hw: Struct containing variables accessed by shared code | |
3883 | * @offset: offset within the EEPROM to be written to | |
3884 | * @words: number of words to write | |
3885 | * @data: 16 bit word to be written to the EEPROM | |
1da177e4 LT |
3886 | * |
3887 | * If e1000_update_eeprom_checksum is not called after this function, the | |
3888 | * EEPROM will most likely contain an invalid checksum. | |
120a5d0d | 3889 | */ |
64798845 | 3890 | s32 e1000_write_eeprom(struct e1000_hw *hw, u16 offset, u16 words, u16 *data) |
78566fec | 3891 | { |
120a5d0d JB |
3892 | s32 ret; |
3893 | spin_lock(&e1000_eeprom_lock); | |
3894 | ret = e1000_do_write_eeprom(hw, offset, words, data); | |
3895 | spin_unlock(&e1000_eeprom_lock); | |
3896 | return ret; | |
78566fec CL |
3897 | } |
3898 | ||
120a5d0d JB |
3899 | static s32 e1000_do_write_eeprom(struct e1000_hw *hw, u16 offset, u16 words, |
3900 | u16 *data) | |
1da177e4 | 3901 | { |
120a5d0d JB |
3902 | struct e1000_eeprom_info *eeprom = &hw->eeprom; |
3903 | s32 status = 0; | |
3904 | ||
675ad473 | 3905 | e_dbg("e1000_write_eeprom"); |
120a5d0d JB |
3906 | |
3907 | /* If eeprom is not yet detected, do so now */ | |
3908 | if (eeprom->word_size == 0) | |
3909 | e1000_init_eeprom_params(hw); | |
3910 | ||
3911 | /* A check for invalid values: offset too large, too many words, and not | |
3912 | * enough words. | |
3913 | */ | |
3914 | if ((offset >= eeprom->word_size) | |
3915 | || (words > eeprom->word_size - offset) || (words == 0)) { | |
675ad473 | 3916 | e_dbg("\"words\" parameter out of bounds\n"); |
120a5d0d JB |
3917 | return -E1000_ERR_EEPROM; |
3918 | } | |
3919 | ||
120a5d0d JB |
3920 | /* Prepare the EEPROM for writing */ |
3921 | if (e1000_acquire_eeprom(hw) != E1000_SUCCESS) | |
3922 | return -E1000_ERR_EEPROM; | |
3923 | ||
3924 | if (eeprom->type == e1000_eeprom_microwire) { | |
3925 | status = e1000_write_eeprom_microwire(hw, offset, words, data); | |
3926 | } else { | |
3927 | status = e1000_write_eeprom_spi(hw, offset, words, data); | |
3928 | msleep(10); | |
3929 | } | |
3930 | ||
3931 | /* Done with writing */ | |
3932 | e1000_release_eeprom(hw); | |
3933 | ||
3934 | return status; | |
1da177e4 LT |
3935 | } |
3936 | ||
120a5d0d JB |
3937 | /** |
3938 | * e1000_write_eeprom_spi - Writes a 16 bit word to a given offset in an SPI EEPROM. | |
3939 | * @hw: Struct containing variables accessed by shared code | |
3940 | * @offset: offset within the EEPROM to be written to | |
3941 | * @words: number of words to write | |
3942 | * @data: pointer to array of 8 bit words to be written to the EEPROM | |
3943 | */ | |
64798845 JP |
3944 | static s32 e1000_write_eeprom_spi(struct e1000_hw *hw, u16 offset, u16 words, |
3945 | u16 *data) | |
1da177e4 | 3946 | { |
120a5d0d JB |
3947 | struct e1000_eeprom_info *eeprom = &hw->eeprom; |
3948 | u16 widx = 0; | |
1da177e4 | 3949 | |
675ad473 | 3950 | e_dbg("e1000_write_eeprom_spi"); |
1da177e4 | 3951 | |
120a5d0d JB |
3952 | while (widx < words) { |
3953 | u8 write_opcode = EEPROM_WRITE_OPCODE_SPI; | |
1da177e4 | 3954 | |
120a5d0d JB |
3955 | if (e1000_spi_eeprom_ready(hw)) |
3956 | return -E1000_ERR_EEPROM; | |
1da177e4 | 3957 | |
120a5d0d | 3958 | e1000_standby_eeprom(hw); |
1da177e4 | 3959 | |
120a5d0d JB |
3960 | /* Send the WRITE ENABLE command (8 bit opcode ) */ |
3961 | e1000_shift_out_ee_bits(hw, EEPROM_WREN_OPCODE_SPI, | |
3962 | eeprom->opcode_bits); | |
1da177e4 | 3963 | |
120a5d0d | 3964 | e1000_standby_eeprom(hw); |
1da177e4 | 3965 | |
120a5d0d JB |
3966 | /* Some SPI eeproms use the 8th address bit embedded in the opcode */ |
3967 | if ((eeprom->address_bits == 8) && (offset >= 128)) | |
3968 | write_opcode |= EEPROM_A8_OPCODE_SPI; | |
1da177e4 | 3969 | |
120a5d0d JB |
3970 | /* Send the Write command (8-bit opcode + addr) */ |
3971 | e1000_shift_out_ee_bits(hw, write_opcode, eeprom->opcode_bits); | |
1da177e4 | 3972 | |
120a5d0d JB |
3973 | e1000_shift_out_ee_bits(hw, (u16) ((offset + widx) * 2), |
3974 | eeprom->address_bits); | |
1da177e4 | 3975 | |
120a5d0d | 3976 | /* Send the data */ |
1da177e4 | 3977 | |
120a5d0d JB |
3978 | /* Loop to allow for up to whole page write (32 bytes) of eeprom */ |
3979 | while (widx < words) { | |
3980 | u16 word_out = data[widx]; | |
3981 | word_out = (word_out >> 8) | (word_out << 8); | |
3982 | e1000_shift_out_ee_bits(hw, word_out, 16); | |
3983 | widx++; | |
1da177e4 | 3984 | |
120a5d0d JB |
3985 | /* Some larger eeprom sizes are capable of a 32-byte PAGE WRITE |
3986 | * operation, while the smaller eeproms are capable of an 8-byte | |
3987 | * PAGE WRITE operation. Break the inner loop to pass new address | |
3988 | */ | |
3989 | if ((((offset + widx) * 2) % eeprom->page_size) == 0) { | |
3990 | e1000_standby_eeprom(hw); | |
3991 | break; | |
3992 | } | |
3993 | } | |
3994 | } | |
1da177e4 | 3995 | |
120a5d0d | 3996 | return E1000_SUCCESS; |
1da177e4 LT |
3997 | } |
3998 | ||
120a5d0d JB |
3999 | /** |
4000 | * e1000_write_eeprom_microwire - Writes a 16 bit word to a given offset in a Microwire EEPROM. | |
4001 | * @hw: Struct containing variables accessed by shared code | |
4002 | * @offset: offset within the EEPROM to be written to | |
4003 | * @words: number of words to write | |
4004 | * @data: pointer to array of 8 bit words to be written to the EEPROM | |
4005 | */ | |
64798845 JP |
4006 | static s32 e1000_write_eeprom_microwire(struct e1000_hw *hw, u16 offset, |
4007 | u16 words, u16 *data) | |
1da177e4 | 4008 | { |
120a5d0d JB |
4009 | struct e1000_eeprom_info *eeprom = &hw->eeprom; |
4010 | u32 eecd; | |
4011 | u16 words_written = 0; | |
4012 | u16 i = 0; | |
4013 | ||
675ad473 | 4014 | e_dbg("e1000_write_eeprom_microwire"); |
120a5d0d JB |
4015 | |
4016 | /* Send the write enable command to the EEPROM (3-bit opcode plus | |
4017 | * 6/8-bit dummy address beginning with 11). It's less work to include | |
4018 | * the 11 of the dummy address as part of the opcode than it is to shift | |
4019 | * it over the correct number of bits for the address. This puts the | |
4020 | * EEPROM into write/erase mode. | |
4021 | */ | |
4022 | e1000_shift_out_ee_bits(hw, EEPROM_EWEN_OPCODE_MICROWIRE, | |
4023 | (u16) (eeprom->opcode_bits + 2)); | |
4024 | ||
4025 | e1000_shift_out_ee_bits(hw, 0, (u16) (eeprom->address_bits - 2)); | |
4026 | ||
4027 | /* Prepare the EEPROM */ | |
4028 | e1000_standby_eeprom(hw); | |
4029 | ||
4030 | while (words_written < words) { | |
4031 | /* Send the Write command (3-bit opcode + addr) */ | |
4032 | e1000_shift_out_ee_bits(hw, EEPROM_WRITE_OPCODE_MICROWIRE, | |
4033 | eeprom->opcode_bits); | |
4034 | ||
4035 | e1000_shift_out_ee_bits(hw, (u16) (offset + words_written), | |
4036 | eeprom->address_bits); | |
4037 | ||
4038 | /* Send the data */ | |
4039 | e1000_shift_out_ee_bits(hw, data[words_written], 16); | |
4040 | ||
4041 | /* Toggle the CS line. This in effect tells the EEPROM to execute | |
4042 | * the previous command. | |
4043 | */ | |
4044 | e1000_standby_eeprom(hw); | |
4045 | ||
4046 | /* Read DO repeatedly until it is high (equal to '1'). The EEPROM will | |
4047 | * signal that the command has been completed by raising the DO signal. | |
4048 | * If DO does not go high in 10 milliseconds, then error out. | |
4049 | */ | |
4050 | for (i = 0; i < 200; i++) { | |
4051 | eecd = er32(EECD); | |
4052 | if (eecd & E1000_EECD_DO) | |
4053 | break; | |
4054 | udelay(50); | |
4055 | } | |
4056 | if (i == 200) { | |
675ad473 | 4057 | e_dbg("EEPROM Write did not complete\n"); |
120a5d0d JB |
4058 | return -E1000_ERR_EEPROM; |
4059 | } | |
4060 | ||
4061 | /* Recover from write */ | |
4062 | e1000_standby_eeprom(hw); | |
4063 | ||
4064 | words_written++; | |
4065 | } | |
4066 | ||
4067 | /* Send the write disable command to the EEPROM (3-bit opcode plus | |
4068 | * 6/8-bit dummy address beginning with 10). It's less work to include | |
4069 | * the 10 of the dummy address as part of the opcode than it is to shift | |
4070 | * it over the correct number of bits for the address. This takes the | |
4071 | * EEPROM out of write/erase mode. | |
4072 | */ | |
4073 | e1000_shift_out_ee_bits(hw, EEPROM_EWDS_OPCODE_MICROWIRE, | |
4074 | (u16) (eeprom->opcode_bits + 2)); | |
4075 | ||
4076 | e1000_shift_out_ee_bits(hw, 0, (u16) (eeprom->address_bits - 2)); | |
4077 | ||
4078 | return E1000_SUCCESS; | |
1da177e4 LT |
4079 | } |
4080 | ||
120a5d0d JB |
4081 | /** |
4082 | * e1000_read_mac_addr - read the adapters MAC from eeprom | |
4083 | * @hw: Struct containing variables accessed by shared code | |
4084 | * | |
1da177e4 LT |
4085 | * Reads the adapter's MAC address from the EEPROM and inverts the LSB for the |
4086 | * second function of dual function devices | |
120a5d0d | 4087 | */ |
64798845 | 4088 | s32 e1000_read_mac_addr(struct e1000_hw *hw) |
1da177e4 | 4089 | { |
120a5d0d JB |
4090 | u16 offset; |
4091 | u16 eeprom_data, i; | |
4092 | ||
675ad473 | 4093 | e_dbg("e1000_read_mac_addr"); |
120a5d0d JB |
4094 | |
4095 | for (i = 0; i < NODE_ADDRESS_SIZE; i += 2) { | |
4096 | offset = i >> 1; | |
4097 | if (e1000_read_eeprom(hw, offset, 1, &eeprom_data) < 0) { | |
675ad473 | 4098 | e_dbg("EEPROM Read Error\n"); |
120a5d0d JB |
4099 | return -E1000_ERR_EEPROM; |
4100 | } | |
4101 | hw->perm_mac_addr[i] = (u8) (eeprom_data & 0x00FF); | |
4102 | hw->perm_mac_addr[i + 1] = (u8) (eeprom_data >> 8); | |
4103 | } | |
4104 | ||
4105 | switch (hw->mac_type) { | |
4106 | default: | |
4107 | break; | |
4108 | case e1000_82546: | |
4109 | case e1000_82546_rev_3: | |
4110 | if (er32(STATUS) & E1000_STATUS_FUNC_1) | |
4111 | hw->perm_mac_addr[5] ^= 0x01; | |
4112 | break; | |
4113 | } | |
4114 | ||
4115 | for (i = 0; i < NODE_ADDRESS_SIZE; i++) | |
4116 | hw->mac_addr[i] = hw->perm_mac_addr[i]; | |
4117 | return E1000_SUCCESS; | |
1da177e4 LT |
4118 | } |
4119 | ||
120a5d0d JB |
4120 | /** |
4121 | * e1000_init_rx_addrs - Initializes receive address filters. | |
4122 | * @hw: Struct containing variables accessed by shared code | |
1da177e4 LT |
4123 | * |
4124 | * Places the MAC address in receive address register 0 and clears the rest | |
120a5d0d | 4125 | * of the receive address registers. Clears the multicast table. Assumes |
1da177e4 | 4126 | * the receiver is in reset when the routine is called. |
120a5d0d | 4127 | */ |
64798845 | 4128 | static void e1000_init_rx_addrs(struct e1000_hw *hw) |
1da177e4 | 4129 | { |
120a5d0d JB |
4130 | u32 i; |
4131 | u32 rar_num; | |
1da177e4 | 4132 | |
675ad473 | 4133 | e_dbg("e1000_init_rx_addrs"); |
1da177e4 | 4134 | |
120a5d0d | 4135 | /* Setup the receive address. */ |
675ad473 | 4136 | e_dbg("Programming MAC Address into RAR[0]\n"); |
1da177e4 | 4137 | |
120a5d0d | 4138 | e1000_rar_set(hw, hw->mac_addr, 0); |
1da177e4 | 4139 | |
120a5d0d | 4140 | rar_num = E1000_RAR_ENTRIES; |
868d5309 | 4141 | |
120a5d0d | 4142 | /* Zero out the other 15 receive addresses. */ |
675ad473 | 4143 | e_dbg("Clearing RAR[1-15]\n"); |
120a5d0d JB |
4144 | for (i = 1; i < rar_num; i++) { |
4145 | E1000_WRITE_REG_ARRAY(hw, RA, (i << 1), 0); | |
4146 | E1000_WRITE_FLUSH(); | |
4147 | E1000_WRITE_REG_ARRAY(hw, RA, ((i << 1) + 1), 0); | |
4148 | E1000_WRITE_FLUSH(); | |
4149 | } | |
1da177e4 LT |
4150 | } |
4151 | ||
120a5d0d JB |
4152 | /** |
4153 | * e1000_hash_mc_addr - Hashes an address to determine its location in the multicast table | |
4154 | * @hw: Struct containing variables accessed by shared code | |
4155 | * @mc_addr: the multicast address to hash | |
4156 | */ | |
64798845 | 4157 | u32 e1000_hash_mc_addr(struct e1000_hw *hw, u8 *mc_addr) |
1da177e4 | 4158 | { |
120a5d0d JB |
4159 | u32 hash_value = 0; |
4160 | ||
4161 | /* The portion of the address that is used for the hash table is | |
4162 | * determined by the mc_filter_type setting. | |
4163 | */ | |
4164 | switch (hw->mc_filter_type) { | |
4165 | /* [0] [1] [2] [3] [4] [5] | |
4166 | * 01 AA 00 12 34 56 | |
4167 | * LSB MSB | |
4168 | */ | |
4169 | case 0: | |
4170 | /* [47:36] i.e. 0x563 for above example address */ | |
4171 | hash_value = ((mc_addr[4] >> 4) | (((u16) mc_addr[5]) << 4)); | |
4172 | break; | |
4173 | case 1: | |
4174 | /* [46:35] i.e. 0xAC6 for above example address */ | |
4175 | hash_value = ((mc_addr[4] >> 3) | (((u16) mc_addr[5]) << 5)); | |
4176 | break; | |
4177 | case 2: | |
4178 | /* [45:34] i.e. 0x5D8 for above example address */ | |
4179 | hash_value = ((mc_addr[4] >> 2) | (((u16) mc_addr[5]) << 6)); | |
4180 | break; | |
4181 | case 3: | |
4182 | /* [43:32] i.e. 0x634 for above example address */ | |
4183 | hash_value = ((mc_addr[4]) | (((u16) mc_addr[5]) << 8)); | |
4184 | break; | |
4185 | } | |
4186 | ||
4187 | hash_value &= 0xFFF; | |
4188 | return hash_value; | |
1da177e4 LT |
4189 | } |
4190 | ||
120a5d0d JB |
4191 | /** |
4192 | * e1000_rar_set - Puts an ethernet address into a receive address register. | |
4193 | * @hw: Struct containing variables accessed by shared code | |
4194 | * @addr: Address to put into receive address register | |
4195 | * @index: Receive address register to write | |
4196 | */ | |
64798845 | 4197 | void e1000_rar_set(struct e1000_hw *hw, u8 *addr, u32 index) |
1da177e4 | 4198 | { |
120a5d0d JB |
4199 | u32 rar_low, rar_high; |
4200 | ||
4201 | /* HW expects these in little endian so we reverse the byte order | |
4202 | * from network order (big endian) to little endian | |
4203 | */ | |
4204 | rar_low = ((u32) addr[0] | ((u32) addr[1] << 8) | | |
4205 | ((u32) addr[2] << 16) | ((u32) addr[3] << 24)); | |
4206 | rar_high = ((u32) addr[4] | ((u32) addr[5] << 8)); | |
4207 | ||
4208 | /* Disable Rx and flush all Rx frames before enabling RSS to avoid Rx | |
4209 | * unit hang. | |
4210 | * | |
4211 | * Description: | |
4212 | * If there are any Rx frames queued up or otherwise present in the HW | |
4213 | * before RSS is enabled, and then we enable RSS, the HW Rx unit will | |
4214 | * hang. To work around this issue, we have to disable receives and | |
4215 | * flush out all Rx frames before we enable RSS. To do so, we modify we | |
4216 | * redirect all Rx traffic to manageability and then reset the HW. | |
4217 | * This flushes away Rx frames, and (since the redirections to | |
4218 | * manageability persists across resets) keeps new ones from coming in | |
4219 | * while we work. Then, we clear the Address Valid AV bit for all MAC | |
4220 | * addresses and undo the re-direction to manageability. | |
4221 | * Now, frames are coming in again, but the MAC won't accept them, so | |
4222 | * far so good. We now proceed to initialize RSS (if necessary) and | |
4223 | * configure the Rx unit. Last, we re-enable the AV bits and continue | |
4224 | * on our merry way. | |
4225 | */ | |
4226 | switch (hw->mac_type) { | |
4227 | default: | |
4228 | /* Indicate to hardware the Address is Valid. */ | |
4229 | rar_high |= E1000_RAH_AV; | |
4230 | break; | |
4231 | } | |
4232 | ||
4233 | E1000_WRITE_REG_ARRAY(hw, RA, (index << 1), rar_low); | |
4234 | E1000_WRITE_FLUSH(); | |
4235 | E1000_WRITE_REG_ARRAY(hw, RA, ((index << 1) + 1), rar_high); | |
4236 | E1000_WRITE_FLUSH(); | |
1da177e4 LT |
4237 | } |
4238 | ||
120a5d0d JB |
4239 | /** |
4240 | * e1000_write_vfta - Writes a value to the specified offset in the VLAN filter table. | |
4241 | * @hw: Struct containing variables accessed by shared code | |
4242 | * @offset: Offset in VLAN filer table to write | |
4243 | * @value: Value to write into VLAN filter table | |
4244 | */ | |
64798845 | 4245 | void e1000_write_vfta(struct e1000_hw *hw, u32 offset, u32 value) |
1da177e4 | 4246 | { |
120a5d0d JB |
4247 | u32 temp; |
4248 | ||
4249 | if ((hw->mac_type == e1000_82544) && ((offset & 0x1) == 1)) { | |
4250 | temp = E1000_READ_REG_ARRAY(hw, VFTA, (offset - 1)); | |
4251 | E1000_WRITE_REG_ARRAY(hw, VFTA, offset, value); | |
4252 | E1000_WRITE_FLUSH(); | |
4253 | E1000_WRITE_REG_ARRAY(hw, VFTA, (offset - 1), temp); | |
4254 | E1000_WRITE_FLUSH(); | |
4255 | } else { | |
4256 | E1000_WRITE_REG_ARRAY(hw, VFTA, offset, value); | |
4257 | E1000_WRITE_FLUSH(); | |
4258 | } | |
1da177e4 LT |
4259 | } |
4260 | ||
120a5d0d JB |
4261 | /** |
4262 | * e1000_clear_vfta - Clears the VLAN filer table | |
4263 | * @hw: Struct containing variables accessed by shared code | |
4264 | */ | |
64798845 | 4265 | static void e1000_clear_vfta(struct e1000_hw *hw) |
1da177e4 | 4266 | { |
120a5d0d JB |
4267 | u32 offset; |
4268 | u32 vfta_value = 0; | |
4269 | u32 vfta_offset = 0; | |
4270 | u32 vfta_bit_in_reg = 0; | |
4271 | ||
4272 | for (offset = 0; offset < E1000_VLAN_FILTER_TBL_SIZE; offset++) { | |
4273 | /* If the offset we want to clear is the same offset of the | |
4274 | * manageability VLAN ID, then clear all bits except that of the | |
4275 | * manageability unit */ | |
4276 | vfta_value = (offset == vfta_offset) ? vfta_bit_in_reg : 0; | |
4277 | E1000_WRITE_REG_ARRAY(hw, VFTA, offset, vfta_value); | |
4278 | E1000_WRITE_FLUSH(); | |
4279 | } | |
1da177e4 LT |
4280 | } |
4281 | ||
64798845 | 4282 | static s32 e1000_id_led_init(struct e1000_hw *hw) |
1da177e4 | 4283 | { |
120a5d0d JB |
4284 | u32 ledctl; |
4285 | const u32 ledctl_mask = 0x000000FF; | |
4286 | const u32 ledctl_on = E1000_LEDCTL_MODE_LED_ON; | |
4287 | const u32 ledctl_off = E1000_LEDCTL_MODE_LED_OFF; | |
4288 | u16 eeprom_data, i, temp; | |
4289 | const u16 led_mask = 0x0F; | |
4290 | ||
675ad473 | 4291 | e_dbg("e1000_id_led_init"); |
120a5d0d JB |
4292 | |
4293 | if (hw->mac_type < e1000_82540) { | |
4294 | /* Nothing to do */ | |
4295 | return E1000_SUCCESS; | |
4296 | } | |
4297 | ||
4298 | ledctl = er32(LEDCTL); | |
4299 | hw->ledctl_default = ledctl; | |
4300 | hw->ledctl_mode1 = hw->ledctl_default; | |
4301 | hw->ledctl_mode2 = hw->ledctl_default; | |
4302 | ||
4303 | if (e1000_read_eeprom(hw, EEPROM_ID_LED_SETTINGS, 1, &eeprom_data) < 0) { | |
675ad473 | 4304 | e_dbg("EEPROM Read Error\n"); |
120a5d0d JB |
4305 | return -E1000_ERR_EEPROM; |
4306 | } | |
4307 | ||
4308 | if ((eeprom_data == ID_LED_RESERVED_0000) || | |
4309 | (eeprom_data == ID_LED_RESERVED_FFFF)) { | |
4310 | eeprom_data = ID_LED_DEFAULT; | |
4311 | } | |
4312 | ||
4313 | for (i = 0; i < 4; i++) { | |
4314 | temp = (eeprom_data >> (i << 2)) & led_mask; | |
4315 | switch (temp) { | |
4316 | case ID_LED_ON1_DEF2: | |
4317 | case ID_LED_ON1_ON2: | |
4318 | case ID_LED_ON1_OFF2: | |
4319 | hw->ledctl_mode1 &= ~(ledctl_mask << (i << 3)); | |
4320 | hw->ledctl_mode1 |= ledctl_on << (i << 3); | |
4321 | break; | |
4322 | case ID_LED_OFF1_DEF2: | |
4323 | case ID_LED_OFF1_ON2: | |
4324 | case ID_LED_OFF1_OFF2: | |
4325 | hw->ledctl_mode1 &= ~(ledctl_mask << (i << 3)); | |
4326 | hw->ledctl_mode1 |= ledctl_off << (i << 3); | |
4327 | break; | |
4328 | default: | |
4329 | /* Do nothing */ | |
4330 | break; | |
4331 | } | |
4332 | switch (temp) { | |
4333 | case ID_LED_DEF1_ON2: | |
4334 | case ID_LED_ON1_ON2: | |
4335 | case ID_LED_OFF1_ON2: | |
4336 | hw->ledctl_mode2 &= ~(ledctl_mask << (i << 3)); | |
4337 | hw->ledctl_mode2 |= ledctl_on << (i << 3); | |
4338 | break; | |
4339 | case ID_LED_DEF1_OFF2: | |
4340 | case ID_LED_ON1_OFF2: | |
4341 | case ID_LED_OFF1_OFF2: | |
4342 | hw->ledctl_mode2 &= ~(ledctl_mask << (i << 3)); | |
4343 | hw->ledctl_mode2 |= ledctl_off << (i << 3); | |
4344 | break; | |
4345 | default: | |
4346 | /* Do nothing */ | |
4347 | break; | |
4348 | } | |
4349 | } | |
4350 | return E1000_SUCCESS; | |
1da177e4 LT |
4351 | } |
4352 | ||
120a5d0d JB |
4353 | /** |
4354 | * e1000_setup_led | |
4355 | * @hw: Struct containing variables accessed by shared code | |
1da177e4 | 4356 | * |
120a5d0d JB |
4357 | * Prepares SW controlable LED for use and saves the current state of the LED. |
4358 | */ | |
64798845 | 4359 | s32 e1000_setup_led(struct e1000_hw *hw) |
1da177e4 | 4360 | { |
120a5d0d JB |
4361 | u32 ledctl; |
4362 | s32 ret_val = E1000_SUCCESS; | |
4363 | ||
675ad473 | 4364 | e_dbg("e1000_setup_led"); |
120a5d0d JB |
4365 | |
4366 | switch (hw->mac_type) { | |
4367 | case e1000_82542_rev2_0: | |
4368 | case e1000_82542_rev2_1: | |
4369 | case e1000_82543: | |
4370 | case e1000_82544: | |
4371 | /* No setup necessary */ | |
4372 | break; | |
4373 | case e1000_82541: | |
4374 | case e1000_82547: | |
4375 | case e1000_82541_rev_2: | |
4376 | case e1000_82547_rev_2: | |
4377 | /* Turn off PHY Smart Power Down (if enabled) */ | |
4378 | ret_val = e1000_read_phy_reg(hw, IGP01E1000_GMII_FIFO, | |
4379 | &hw->phy_spd_default); | |
4380 | if (ret_val) | |
4381 | return ret_val; | |
4382 | ret_val = e1000_write_phy_reg(hw, IGP01E1000_GMII_FIFO, | |
4383 | (u16) (hw->phy_spd_default & | |
4384 | ~IGP01E1000_GMII_SPD)); | |
4385 | if (ret_val) | |
4386 | return ret_val; | |
4387 | /* Fall Through */ | |
4388 | default: | |
4389 | if (hw->media_type == e1000_media_type_fiber) { | |
4390 | ledctl = er32(LEDCTL); | |
4391 | /* Save current LEDCTL settings */ | |
4392 | hw->ledctl_default = ledctl; | |
4393 | /* Turn off LED0 */ | |
4394 | ledctl &= ~(E1000_LEDCTL_LED0_IVRT | | |
4395 | E1000_LEDCTL_LED0_BLINK | | |
4396 | E1000_LEDCTL_LED0_MODE_MASK); | |
4397 | ledctl |= (E1000_LEDCTL_MODE_LED_OFF << | |
4398 | E1000_LEDCTL_LED0_MODE_SHIFT); | |
4399 | ew32(LEDCTL, ledctl); | |
4400 | } else if (hw->media_type == e1000_media_type_copper) | |
4401 | ew32(LEDCTL, hw->ledctl_mode1); | |
4402 | break; | |
4403 | } | |
4404 | ||
4405 | return E1000_SUCCESS; | |
1da177e4 LT |
4406 | } |
4407 | ||
120a5d0d JB |
4408 | /** |
4409 | * e1000_cleanup_led - Restores the saved state of the SW controlable LED. | |
4410 | * @hw: Struct containing variables accessed by shared code | |
4411 | */ | |
64798845 | 4412 | s32 e1000_cleanup_led(struct e1000_hw *hw) |
1da177e4 | 4413 | { |
120a5d0d JB |
4414 | s32 ret_val = E1000_SUCCESS; |
4415 | ||
675ad473 | 4416 | e_dbg("e1000_cleanup_led"); |
120a5d0d JB |
4417 | |
4418 | switch (hw->mac_type) { | |
4419 | case e1000_82542_rev2_0: | |
4420 | case e1000_82542_rev2_1: | |
4421 | case e1000_82543: | |
4422 | case e1000_82544: | |
4423 | /* No cleanup necessary */ | |
4424 | break; | |
4425 | case e1000_82541: | |
4426 | case e1000_82547: | |
4427 | case e1000_82541_rev_2: | |
4428 | case e1000_82547_rev_2: | |
4429 | /* Turn on PHY Smart Power Down (if previously enabled) */ | |
4430 | ret_val = e1000_write_phy_reg(hw, IGP01E1000_GMII_FIFO, | |
4431 | hw->phy_spd_default); | |
4432 | if (ret_val) | |
4433 | return ret_val; | |
4434 | /* Fall Through */ | |
4435 | default: | |
4436 | /* Restore LEDCTL settings */ | |
4437 | ew32(LEDCTL, hw->ledctl_default); | |
4438 | break; | |
4439 | } | |
4440 | ||
4441 | return E1000_SUCCESS; | |
1da177e4 LT |
4442 | } |
4443 | ||
120a5d0d JB |
4444 | /** |
4445 | * e1000_led_on - Turns on the software controllable LED | |
4446 | * @hw: Struct containing variables accessed by shared code | |
4447 | */ | |
64798845 | 4448 | s32 e1000_led_on(struct e1000_hw *hw) |
1da177e4 | 4449 | { |
120a5d0d JB |
4450 | u32 ctrl = er32(CTRL); |
4451 | ||
675ad473 | 4452 | e_dbg("e1000_led_on"); |
120a5d0d JB |
4453 | |
4454 | switch (hw->mac_type) { | |
4455 | case e1000_82542_rev2_0: | |
4456 | case e1000_82542_rev2_1: | |
4457 | case e1000_82543: | |
4458 | /* Set SW Defineable Pin 0 to turn on the LED */ | |
4459 | ctrl |= E1000_CTRL_SWDPIN0; | |
4460 | ctrl |= E1000_CTRL_SWDPIO0; | |
4461 | break; | |
4462 | case e1000_82544: | |
4463 | if (hw->media_type == e1000_media_type_fiber) { | |
4464 | /* Set SW Defineable Pin 0 to turn on the LED */ | |
4465 | ctrl |= E1000_CTRL_SWDPIN0; | |
4466 | ctrl |= E1000_CTRL_SWDPIO0; | |
4467 | } else { | |
4468 | /* Clear SW Defineable Pin 0 to turn on the LED */ | |
4469 | ctrl &= ~E1000_CTRL_SWDPIN0; | |
4470 | ctrl |= E1000_CTRL_SWDPIO0; | |
4471 | } | |
4472 | break; | |
4473 | default: | |
4474 | if (hw->media_type == e1000_media_type_fiber) { | |
4475 | /* Clear SW Defineable Pin 0 to turn on the LED */ | |
4476 | ctrl &= ~E1000_CTRL_SWDPIN0; | |
4477 | ctrl |= E1000_CTRL_SWDPIO0; | |
4478 | } else if (hw->media_type == e1000_media_type_copper) { | |
4479 | ew32(LEDCTL, hw->ledctl_mode2); | |
4480 | return E1000_SUCCESS; | |
4481 | } | |
4482 | break; | |
4483 | } | |
4484 | ||
4485 | ew32(CTRL, ctrl); | |
4486 | ||
4487 | return E1000_SUCCESS; | |
1da177e4 LT |
4488 | } |
4489 | ||
120a5d0d JB |
4490 | /** |
4491 | * e1000_led_off - Turns off the software controllable LED | |
4492 | * @hw: Struct containing variables accessed by shared code | |
4493 | */ | |
64798845 | 4494 | s32 e1000_led_off(struct e1000_hw *hw) |
1da177e4 | 4495 | { |
120a5d0d JB |
4496 | u32 ctrl = er32(CTRL); |
4497 | ||
675ad473 | 4498 | e_dbg("e1000_led_off"); |
120a5d0d JB |
4499 | |
4500 | switch (hw->mac_type) { | |
4501 | case e1000_82542_rev2_0: | |
4502 | case e1000_82542_rev2_1: | |
4503 | case e1000_82543: | |
4504 | /* Clear SW Defineable Pin 0 to turn off the LED */ | |
4505 | ctrl &= ~E1000_CTRL_SWDPIN0; | |
4506 | ctrl |= E1000_CTRL_SWDPIO0; | |
4507 | break; | |
4508 | case e1000_82544: | |
4509 | if (hw->media_type == e1000_media_type_fiber) { | |
4510 | /* Clear SW Defineable Pin 0 to turn off the LED */ | |
4511 | ctrl &= ~E1000_CTRL_SWDPIN0; | |
4512 | ctrl |= E1000_CTRL_SWDPIO0; | |
4513 | } else { | |
4514 | /* Set SW Defineable Pin 0 to turn off the LED */ | |
4515 | ctrl |= E1000_CTRL_SWDPIN0; | |
4516 | ctrl |= E1000_CTRL_SWDPIO0; | |
4517 | } | |
4518 | break; | |
4519 | default: | |
4520 | if (hw->media_type == e1000_media_type_fiber) { | |
4521 | /* Set SW Defineable Pin 0 to turn off the LED */ | |
4522 | ctrl |= E1000_CTRL_SWDPIN0; | |
4523 | ctrl |= E1000_CTRL_SWDPIO0; | |
4524 | } else if (hw->media_type == e1000_media_type_copper) { | |
4525 | ew32(LEDCTL, hw->ledctl_mode1); | |
4526 | return E1000_SUCCESS; | |
4527 | } | |
4528 | break; | |
4529 | } | |
4530 | ||
4531 | ew32(CTRL, ctrl); | |
4532 | ||
4533 | return E1000_SUCCESS; | |
1da177e4 LT |
4534 | } |
4535 | ||
120a5d0d JB |
4536 | /** |
4537 | * e1000_clear_hw_cntrs - Clears all hardware statistics counters. | |
4538 | * @hw: Struct containing variables accessed by shared code | |
4539 | */ | |
64798845 | 4540 | static void e1000_clear_hw_cntrs(struct e1000_hw *hw) |
1da177e4 | 4541 | { |
120a5d0d JB |
4542 | volatile u32 temp; |
4543 | ||
4544 | temp = er32(CRCERRS); | |
4545 | temp = er32(SYMERRS); | |
4546 | temp = er32(MPC); | |
4547 | temp = er32(SCC); | |
4548 | temp = er32(ECOL); | |
4549 | temp = er32(MCC); | |
4550 | temp = er32(LATECOL); | |
4551 | temp = er32(COLC); | |
4552 | temp = er32(DC); | |
4553 | temp = er32(SEC); | |
4554 | temp = er32(RLEC); | |
4555 | temp = er32(XONRXC); | |
4556 | temp = er32(XONTXC); | |
4557 | temp = er32(XOFFRXC); | |
4558 | temp = er32(XOFFTXC); | |
4559 | temp = er32(FCRUC); | |
4560 | ||
4561 | temp = er32(PRC64); | |
4562 | temp = er32(PRC127); | |
4563 | temp = er32(PRC255); | |
4564 | temp = er32(PRC511); | |
4565 | temp = er32(PRC1023); | |
4566 | temp = er32(PRC1522); | |
4567 | ||
4568 | temp = er32(GPRC); | |
4569 | temp = er32(BPRC); | |
4570 | temp = er32(MPRC); | |
4571 | temp = er32(GPTC); | |
4572 | temp = er32(GORCL); | |
4573 | temp = er32(GORCH); | |
4574 | temp = er32(GOTCL); | |
4575 | temp = er32(GOTCH); | |
4576 | temp = er32(RNBC); | |
4577 | temp = er32(RUC); | |
4578 | temp = er32(RFC); | |
4579 | temp = er32(ROC); | |
4580 | temp = er32(RJC); | |
4581 | temp = er32(TORL); | |
4582 | temp = er32(TORH); | |
4583 | temp = er32(TOTL); | |
4584 | temp = er32(TOTH); | |
4585 | temp = er32(TPR); | |
4586 | temp = er32(TPT); | |
4587 | ||
4588 | temp = er32(PTC64); | |
4589 | temp = er32(PTC127); | |
4590 | temp = er32(PTC255); | |
4591 | temp = er32(PTC511); | |
4592 | temp = er32(PTC1023); | |
4593 | temp = er32(PTC1522); | |
4594 | ||
4595 | temp = er32(MPTC); | |
4596 | temp = er32(BPTC); | |
4597 | ||
4598 | if (hw->mac_type < e1000_82543) | |
4599 | return; | |
4600 | ||
4601 | temp = er32(ALGNERRC); | |
4602 | temp = er32(RXERRC); | |
4603 | temp = er32(TNCRS); | |
4604 | temp = er32(CEXTERR); | |
4605 | temp = er32(TSCTC); | |
4606 | temp = er32(TSCTFC); | |
4607 | ||
4608 | if (hw->mac_type <= e1000_82544) | |
4609 | return; | |
4610 | ||
4611 | temp = er32(MGTPRC); | |
4612 | temp = er32(MGTPDC); | |
4613 | temp = er32(MGTPTC); | |
1da177e4 LT |
4614 | } |
4615 | ||
120a5d0d JB |
4616 | /** |
4617 | * e1000_reset_adaptive - Resets Adaptive IFS to its default state. | |
4618 | * @hw: Struct containing variables accessed by shared code | |
1da177e4 LT |
4619 | * |
4620 | * Call this after e1000_init_hw. You may override the IFS defaults by setting | |
c3033b01 | 4621 | * hw->ifs_params_forced to true. However, you must initialize hw-> |
1da177e4 LT |
4622 | * current_ifs_val, ifs_min_val, ifs_max_val, ifs_step_size, and ifs_ratio |
4623 | * before calling this function. | |
120a5d0d | 4624 | */ |
64798845 | 4625 | void e1000_reset_adaptive(struct e1000_hw *hw) |
1da177e4 | 4626 | { |
675ad473 | 4627 | e_dbg("e1000_reset_adaptive"); |
120a5d0d JB |
4628 | |
4629 | if (hw->adaptive_ifs) { | |
4630 | if (!hw->ifs_params_forced) { | |
4631 | hw->current_ifs_val = 0; | |
4632 | hw->ifs_min_val = IFS_MIN; | |
4633 | hw->ifs_max_val = IFS_MAX; | |
4634 | hw->ifs_step_size = IFS_STEP; | |
4635 | hw->ifs_ratio = IFS_RATIO; | |
4636 | } | |
4637 | hw->in_ifs_mode = false; | |
4638 | ew32(AIT, 0); | |
4639 | } else { | |
675ad473 | 4640 | e_dbg("Not in Adaptive IFS mode!\n"); |
120a5d0d | 4641 | } |
1da177e4 LT |
4642 | } |
4643 | ||
120a5d0d JB |
4644 | /** |
4645 | * e1000_update_adaptive - update adaptive IFS | |
4646 | * @hw: Struct containing variables accessed by shared code | |
4647 | * @tx_packets: Number of transmits since last callback | |
4648 | * @total_collisions: Number of collisions since last callback | |
4649 | * | |
1da177e4 LT |
4650 | * Called during the callback/watchdog routine to update IFS value based on |
4651 | * the ratio of transmits to collisions. | |
120a5d0d | 4652 | */ |
64798845 | 4653 | void e1000_update_adaptive(struct e1000_hw *hw) |
1da177e4 | 4654 | { |
675ad473 | 4655 | e_dbg("e1000_update_adaptive"); |
120a5d0d JB |
4656 | |
4657 | if (hw->adaptive_ifs) { | |
4658 | if ((hw->collision_delta *hw->ifs_ratio) > hw->tx_packet_delta) { | |
4659 | if (hw->tx_packet_delta > MIN_NUM_XMITS) { | |
4660 | hw->in_ifs_mode = true; | |
4661 | if (hw->current_ifs_val < hw->ifs_max_val) { | |
4662 | if (hw->current_ifs_val == 0) | |
4663 | hw->current_ifs_val = | |
4664 | hw->ifs_min_val; | |
4665 | else | |
4666 | hw->current_ifs_val += | |
4667 | hw->ifs_step_size; | |
4668 | ew32(AIT, hw->current_ifs_val); | |
4669 | } | |
4670 | } | |
4671 | } else { | |
4672 | if (hw->in_ifs_mode | |
4673 | && (hw->tx_packet_delta <= MIN_NUM_XMITS)) { | |
4674 | hw->current_ifs_val = 0; | |
4675 | hw->in_ifs_mode = false; | |
4676 | ew32(AIT, 0); | |
4677 | } | |
4678 | } | |
4679 | } else { | |
675ad473 | 4680 | e_dbg("Not in Adaptive IFS mode!\n"); |
120a5d0d | 4681 | } |
1da177e4 LT |
4682 | } |
4683 | ||
120a5d0d JB |
4684 | /** |
4685 | * e1000_tbi_adjust_stats | |
4686 | * @hw: Struct containing variables accessed by shared code | |
4687 | * @frame_len: The length of the frame in question | |
4688 | * @mac_addr: The Ethernet destination address of the frame in question | |
1da177e4 | 4689 | * |
120a5d0d JB |
4690 | * Adjusts the statistic counters when a frame is accepted by TBI_ACCEPT |
4691 | */ | |
64798845 JP |
4692 | void e1000_tbi_adjust_stats(struct e1000_hw *hw, struct e1000_hw_stats *stats, |
4693 | u32 frame_len, u8 *mac_addr) | |
1da177e4 | 4694 | { |
120a5d0d JB |
4695 | u64 carry_bit; |
4696 | ||
4697 | /* First adjust the frame length. */ | |
4698 | frame_len--; | |
4699 | /* We need to adjust the statistics counters, since the hardware | |
4700 | * counters overcount this packet as a CRC error and undercount | |
4701 | * the packet as a good packet | |
4702 | */ | |
4703 | /* This packet should not be counted as a CRC error. */ | |
4704 | stats->crcerrs--; | |
4705 | /* This packet does count as a Good Packet Received. */ | |
4706 | stats->gprc++; | |
4707 | ||
4708 | /* Adjust the Good Octets received counters */ | |
4709 | carry_bit = 0x80000000 & stats->gorcl; | |
4710 | stats->gorcl += frame_len; | |
4711 | /* If the high bit of Gorcl (the low 32 bits of the Good Octets | |
4712 | * Received Count) was one before the addition, | |
4713 | * AND it is zero after, then we lost the carry out, | |
4714 | * need to add one to Gorch (Good Octets Received Count High). | |
4715 | * This could be simplified if all environments supported | |
4716 | * 64-bit integers. | |
4717 | */ | |
4718 | if (carry_bit && ((stats->gorcl & 0x80000000) == 0)) | |
4719 | stats->gorch++; | |
4720 | /* Is this a broadcast or multicast? Check broadcast first, | |
4721 | * since the test for a multicast frame will test positive on | |
4722 | * a broadcast frame. | |
4723 | */ | |
4724 | if ((mac_addr[0] == (u8) 0xff) && (mac_addr[1] == (u8) 0xff)) | |
4725 | /* Broadcast packet */ | |
4726 | stats->bprc++; | |
4727 | else if (*mac_addr & 0x01) | |
4728 | /* Multicast packet */ | |
4729 | stats->mprc++; | |
4730 | ||
4731 | if (frame_len == hw->max_frame_size) { | |
4732 | /* In this case, the hardware has overcounted the number of | |
4733 | * oversize frames. | |
4734 | */ | |
4735 | if (stats->roc > 0) | |
4736 | stats->roc--; | |
4737 | } | |
4738 | ||
4739 | /* Adjust the bin counters when the extra byte put the frame in the | |
4740 | * wrong bin. Remember that the frame_len was adjusted above. | |
4741 | */ | |
4742 | if (frame_len == 64) { | |
4743 | stats->prc64++; | |
4744 | stats->prc127--; | |
4745 | } else if (frame_len == 127) { | |
4746 | stats->prc127++; | |
4747 | stats->prc255--; | |
4748 | } else if (frame_len == 255) { | |
4749 | stats->prc255++; | |
4750 | stats->prc511--; | |
4751 | } else if (frame_len == 511) { | |
4752 | stats->prc511++; | |
4753 | stats->prc1023--; | |
4754 | } else if (frame_len == 1023) { | |
4755 | stats->prc1023++; | |
4756 | stats->prc1522--; | |
4757 | } else if (frame_len == 1522) { | |
4758 | stats->prc1522++; | |
4759 | } | |
1da177e4 LT |
4760 | } |
4761 | ||
120a5d0d JB |
4762 | /** |
4763 | * e1000_get_bus_info | |
4764 | * @hw: Struct containing variables accessed by shared code | |
1da177e4 | 4765 | * |
120a5d0d JB |
4766 | * Gets the current PCI bus type, speed, and width of the hardware |
4767 | */ | |
64798845 | 4768 | void e1000_get_bus_info(struct e1000_hw *hw) |
1da177e4 | 4769 | { |
120a5d0d JB |
4770 | u32 status; |
4771 | ||
4772 | switch (hw->mac_type) { | |
4773 | case e1000_82542_rev2_0: | |
4774 | case e1000_82542_rev2_1: | |
4775 | hw->bus_type = e1000_bus_type_pci; | |
4776 | hw->bus_speed = e1000_bus_speed_unknown; | |
4777 | hw->bus_width = e1000_bus_width_unknown; | |
4778 | break; | |
4779 | default: | |
4780 | status = er32(STATUS); | |
4781 | hw->bus_type = (status & E1000_STATUS_PCIX_MODE) ? | |
4782 | e1000_bus_type_pcix : e1000_bus_type_pci; | |
4783 | ||
4784 | if (hw->device_id == E1000_DEV_ID_82546EB_QUAD_COPPER) { | |
4785 | hw->bus_speed = (hw->bus_type == e1000_bus_type_pci) ? | |
4786 | e1000_bus_speed_66 : e1000_bus_speed_120; | |
4787 | } else if (hw->bus_type == e1000_bus_type_pci) { | |
4788 | hw->bus_speed = (status & E1000_STATUS_PCI66) ? | |
4789 | e1000_bus_speed_66 : e1000_bus_speed_33; | |
4790 | } else { | |
4791 | switch (status & E1000_STATUS_PCIX_SPEED) { | |
4792 | case E1000_STATUS_PCIX_SPEED_66: | |
4793 | hw->bus_speed = e1000_bus_speed_66; | |
4794 | break; | |
4795 | case E1000_STATUS_PCIX_SPEED_100: | |
4796 | hw->bus_speed = e1000_bus_speed_100; | |
4797 | break; | |
4798 | case E1000_STATUS_PCIX_SPEED_133: | |
4799 | hw->bus_speed = e1000_bus_speed_133; | |
4800 | break; | |
4801 | default: | |
4802 | hw->bus_speed = e1000_bus_speed_reserved; | |
4803 | break; | |
4804 | } | |
4805 | } | |
4806 | hw->bus_width = (status & E1000_STATUS_BUS64) ? | |
4807 | e1000_bus_width_64 : e1000_bus_width_32; | |
4808 | break; | |
4809 | } | |
1da177e4 | 4810 | } |
1da177e4 | 4811 | |
120a5d0d JB |
4812 | /** |
4813 | * e1000_write_reg_io | |
4814 | * @hw: Struct containing variables accessed by shared code | |
4815 | * @offset: offset to write to | |
4816 | * @value: value to write | |
4817 | * | |
1da177e4 LT |
4818 | * Writes a value to one of the devices registers using port I/O (as opposed to |
4819 | * memory mapped I/O). Only 82544 and newer devices support port I/O. | |
120a5d0d | 4820 | */ |
64798845 | 4821 | static void e1000_write_reg_io(struct e1000_hw *hw, u32 offset, u32 value) |
1da177e4 | 4822 | { |
120a5d0d JB |
4823 | unsigned long io_addr = hw->io_base; |
4824 | unsigned long io_data = hw->io_base + 4; | |
1da177e4 | 4825 | |
120a5d0d JB |
4826 | e1000_io_write(hw, io_addr, offset); |
4827 | e1000_io_write(hw, io_data, value); | |
1da177e4 LT |
4828 | } |
4829 | ||
120a5d0d JB |
4830 | /** |
4831 | * e1000_get_cable_length - Estimates the cable length. | |
4832 | * @hw: Struct containing variables accessed by shared code | |
4833 | * @min_length: The estimated minimum length | |
4834 | * @max_length: The estimated maximum length | |
1da177e4 LT |
4835 | * |
4836 | * returns: - E1000_ERR_XXX | |
4837 | * E1000_SUCCESS | |
4838 | * | |
4839 | * This function always returns a ranged length (minimum & maximum). | |
4840 | * So for M88 phy's, this function interprets the one value returned from the | |
4841 | * register to the minimum and maximum range. | |
4842 | * For IGP phy's, the function calculates the range by the AGC registers. | |
120a5d0d | 4843 | */ |
64798845 JP |
4844 | static s32 e1000_get_cable_length(struct e1000_hw *hw, u16 *min_length, |
4845 | u16 *max_length) | |
1da177e4 | 4846 | { |
120a5d0d JB |
4847 | s32 ret_val; |
4848 | u16 agc_value = 0; | |
4849 | u16 i, phy_data; | |
4850 | u16 cable_length; | |
4851 | ||
675ad473 | 4852 | e_dbg("e1000_get_cable_length"); |
120a5d0d JB |
4853 | |
4854 | *min_length = *max_length = 0; | |
4855 | ||
4856 | /* Use old method for Phy older than IGP */ | |
4857 | if (hw->phy_type == e1000_phy_m88) { | |
4858 | ||
4859 | ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS, | |
4860 | &phy_data); | |
4861 | if (ret_val) | |
4862 | return ret_val; | |
4863 | cable_length = (phy_data & M88E1000_PSSR_CABLE_LENGTH) >> | |
4864 | M88E1000_PSSR_CABLE_LENGTH_SHIFT; | |
4865 | ||
4866 | /* Convert the enum value to ranged values */ | |
4867 | switch (cable_length) { | |
4868 | case e1000_cable_length_50: | |
4869 | *min_length = 0; | |
4870 | *max_length = e1000_igp_cable_length_50; | |
4871 | break; | |
4872 | case e1000_cable_length_50_80: | |
4873 | *min_length = e1000_igp_cable_length_50; | |
4874 | *max_length = e1000_igp_cable_length_80; | |
4875 | break; | |
4876 | case e1000_cable_length_80_110: | |
4877 | *min_length = e1000_igp_cable_length_80; | |
4878 | *max_length = e1000_igp_cable_length_110; | |
4879 | break; | |
4880 | case e1000_cable_length_110_140: | |
4881 | *min_length = e1000_igp_cable_length_110; | |
4882 | *max_length = e1000_igp_cable_length_140; | |
4883 | break; | |
4884 | case e1000_cable_length_140: | |
4885 | *min_length = e1000_igp_cable_length_140; | |
4886 | *max_length = e1000_igp_cable_length_170; | |
4887 | break; | |
4888 | default: | |
4889 | return -E1000_ERR_PHY; | |
4890 | break; | |
4891 | } | |
4892 | } else if (hw->phy_type == e1000_phy_igp) { /* For IGP PHY */ | |
4893 | u16 cur_agc_value; | |
4894 | u16 min_agc_value = IGP01E1000_AGC_LENGTH_TABLE_SIZE; | |
4895 | u16 agc_reg_array[IGP01E1000_PHY_CHANNEL_NUM] = | |
4896 | { IGP01E1000_PHY_AGC_A, | |
4897 | IGP01E1000_PHY_AGC_B, | |
4898 | IGP01E1000_PHY_AGC_C, | |
4899 | IGP01E1000_PHY_AGC_D | |
4900 | }; | |
4901 | /* Read the AGC registers for all channels */ | |
4902 | for (i = 0; i < IGP01E1000_PHY_CHANNEL_NUM; i++) { | |
4903 | ||
4904 | ret_val = | |
4905 | e1000_read_phy_reg(hw, agc_reg_array[i], &phy_data); | |
4906 | if (ret_val) | |
4907 | return ret_val; | |
4908 | ||
4909 | cur_agc_value = phy_data >> IGP01E1000_AGC_LENGTH_SHIFT; | |
4910 | ||
4911 | /* Value bound check. */ | |
4912 | if ((cur_agc_value >= | |
4913 | IGP01E1000_AGC_LENGTH_TABLE_SIZE - 1) | |
4914 | || (cur_agc_value == 0)) | |
4915 | return -E1000_ERR_PHY; | |
4916 | ||
4917 | agc_value += cur_agc_value; | |
4918 | ||
4919 | /* Update minimal AGC value. */ | |
4920 | if (min_agc_value > cur_agc_value) | |
4921 | min_agc_value = cur_agc_value; | |
4922 | } | |
4923 | ||
4924 | /* Remove the minimal AGC result for length < 50m */ | |
4925 | if (agc_value < | |
4926 | IGP01E1000_PHY_CHANNEL_NUM * e1000_igp_cable_length_50) { | |
4927 | agc_value -= min_agc_value; | |
4928 | ||
4929 | /* Get the average length of the remaining 3 channels */ | |
4930 | agc_value /= (IGP01E1000_PHY_CHANNEL_NUM - 1); | |
4931 | } else { | |
4932 | /* Get the average length of all the 4 channels. */ | |
4933 | agc_value /= IGP01E1000_PHY_CHANNEL_NUM; | |
4934 | } | |
4935 | ||
4936 | /* Set the range of the calculated length. */ | |
4937 | *min_length = ((e1000_igp_cable_length_table[agc_value] - | |
4938 | IGP01E1000_AGC_RANGE) > 0) ? | |
4939 | (e1000_igp_cable_length_table[agc_value] - | |
4940 | IGP01E1000_AGC_RANGE) : 0; | |
4941 | *max_length = e1000_igp_cable_length_table[agc_value] + | |
4942 | IGP01E1000_AGC_RANGE; | |
4943 | } | |
4944 | ||
4945 | return E1000_SUCCESS; | |
1da177e4 LT |
4946 | } |
4947 | ||
120a5d0d JB |
4948 | /** |
4949 | * e1000_check_polarity - Check the cable polarity | |
4950 | * @hw: Struct containing variables accessed by shared code | |
4951 | * @polarity: output parameter : 0 - Polarity is not reversed | |
1da177e4 LT |
4952 | * 1 - Polarity is reversed. |
4953 | * | |
4954 | * returns: - E1000_ERR_XXX | |
4955 | * E1000_SUCCESS | |
4956 | * | |
025dfdaf | 4957 | * For phy's older than IGP, this function simply reads the polarity bit in the |
1da177e4 LT |
4958 | * Phy Status register. For IGP phy's, this bit is valid only if link speed is |
4959 | * 10 Mbps. If the link speed is 100 Mbps there is no polarity so this bit will | |
4960 | * return 0. If the link speed is 1000 Mbps the polarity status is in the | |
4961 | * IGP01E1000_PHY_PCS_INIT_REG. | |
120a5d0d | 4962 | */ |
64798845 JP |
4963 | static s32 e1000_check_polarity(struct e1000_hw *hw, |
4964 | e1000_rev_polarity *polarity) | |
1da177e4 | 4965 | { |
120a5d0d JB |
4966 | s32 ret_val; |
4967 | u16 phy_data; | |
4968 | ||
675ad473 | 4969 | e_dbg("e1000_check_polarity"); |
120a5d0d JB |
4970 | |
4971 | if (hw->phy_type == e1000_phy_m88) { | |
4972 | /* return the Polarity bit in the Status register. */ | |
4973 | ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS, | |
4974 | &phy_data); | |
4975 | if (ret_val) | |
4976 | return ret_val; | |
4977 | *polarity = ((phy_data & M88E1000_PSSR_REV_POLARITY) >> | |
4978 | M88E1000_PSSR_REV_POLARITY_SHIFT) ? | |
4979 | e1000_rev_polarity_reversed : e1000_rev_polarity_normal; | |
4980 | ||
4981 | } else if (hw->phy_type == e1000_phy_igp) { | |
4982 | /* Read the Status register to check the speed */ | |
4983 | ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_STATUS, | |
4984 | &phy_data); | |
4985 | if (ret_val) | |
4986 | return ret_val; | |
4987 | ||
4988 | /* If speed is 1000 Mbps, must read the IGP01E1000_PHY_PCS_INIT_REG to | |
4989 | * find the polarity status */ | |
4990 | if ((phy_data & IGP01E1000_PSSR_SPEED_MASK) == | |
4991 | IGP01E1000_PSSR_SPEED_1000MBPS) { | |
4992 | ||
4993 | /* Read the GIG initialization PCS register (0x00B4) */ | |
4994 | ret_val = | |
4995 | e1000_read_phy_reg(hw, IGP01E1000_PHY_PCS_INIT_REG, | |
4996 | &phy_data); | |
4997 | if (ret_val) | |
4998 | return ret_val; | |
4999 | ||
5000 | /* Check the polarity bits */ | |
5001 | *polarity = (phy_data & IGP01E1000_PHY_POLARITY_MASK) ? | |
5002 | e1000_rev_polarity_reversed : | |
5003 | e1000_rev_polarity_normal; | |
5004 | } else { | |
5005 | /* For 10 Mbps, read the polarity bit in the status register. (for | |
5006 | * 100 Mbps this bit is always 0) */ | |
5007 | *polarity = | |
5008 | (phy_data & IGP01E1000_PSSR_POLARITY_REVERSED) ? | |
5009 | e1000_rev_polarity_reversed : | |
5010 | e1000_rev_polarity_normal; | |
5011 | } | |
5012 | } | |
5013 | return E1000_SUCCESS; | |
1da177e4 LT |
5014 | } |
5015 | ||
120a5d0d JB |
5016 | /** |
5017 | * e1000_check_downshift - Check if Downshift occurred | |
5018 | * @hw: Struct containing variables accessed by shared code | |
5019 | * @downshift: output parameter : 0 - No Downshift occurred. | |
5020 | * 1 - Downshift occurred. | |
1da177e4 LT |
5021 | * |
5022 | * returns: - E1000_ERR_XXX | |
76c224bc | 5023 | * E1000_SUCCESS |
1da177e4 | 5024 | * |
025dfdaf | 5025 | * For phy's older than IGP, this function reads the Downshift bit in the Phy |
1da177e4 LT |
5026 | * Specific Status register. For IGP phy's, it reads the Downgrade bit in the |
5027 | * Link Health register. In IGP this bit is latched high, so the driver must | |
5028 | * read it immediately after link is established. | |
120a5d0d | 5029 | */ |
64798845 | 5030 | static s32 e1000_check_downshift(struct e1000_hw *hw) |
1da177e4 | 5031 | { |
120a5d0d JB |
5032 | s32 ret_val; |
5033 | u16 phy_data; | |
5034 | ||
675ad473 | 5035 | e_dbg("e1000_check_downshift"); |
120a5d0d JB |
5036 | |
5037 | if (hw->phy_type == e1000_phy_igp) { | |
5038 | ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_LINK_HEALTH, | |
5039 | &phy_data); | |
5040 | if (ret_val) | |
5041 | return ret_val; | |
5042 | ||
5043 | hw->speed_downgraded = | |
5044 | (phy_data & IGP01E1000_PLHR_SS_DOWNGRADE) ? 1 : 0; | |
5045 | } else if (hw->phy_type == e1000_phy_m88) { | |
5046 | ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS, | |
5047 | &phy_data); | |
5048 | if (ret_val) | |
5049 | return ret_val; | |
5050 | ||
5051 | hw->speed_downgraded = (phy_data & M88E1000_PSSR_DOWNSHIFT) >> | |
5052 | M88E1000_PSSR_DOWNSHIFT_SHIFT; | |
5053 | } | |
2d7edb92 | 5054 | |
120a5d0d | 5055 | return E1000_SUCCESS; |
1da177e4 LT |
5056 | } |
5057 | ||
120a5d0d JB |
5058 | /** |
5059 | * e1000_config_dsp_after_link_change | |
5060 | * @hw: Struct containing variables accessed by shared code | |
5061 | * @link_up: was link up at the time this was called | |
1da177e4 LT |
5062 | * |
5063 | * returns: - E1000_ERR_PHY if fail to read/write the PHY | |
5064 | * E1000_SUCCESS at any other case. | |
5065 | * | |
120a5d0d JB |
5066 | * 82541_rev_2 & 82547_rev_2 have the capability to configure the DSP when a |
5067 | * gigabit link is achieved to improve link quality. | |
5068 | */ | |
1da177e4 | 5069 | |
64798845 | 5070 | static s32 e1000_config_dsp_after_link_change(struct e1000_hw *hw, bool link_up) |
1da177e4 | 5071 | { |
120a5d0d JB |
5072 | s32 ret_val; |
5073 | u16 phy_data, phy_saved_data, speed, duplex, i; | |
5074 | u16 dsp_reg_array[IGP01E1000_PHY_CHANNEL_NUM] = | |
5075 | { IGP01E1000_PHY_AGC_PARAM_A, | |
5076 | IGP01E1000_PHY_AGC_PARAM_B, | |
5077 | IGP01E1000_PHY_AGC_PARAM_C, | |
5078 | IGP01E1000_PHY_AGC_PARAM_D | |
5079 | }; | |
5080 | u16 min_length, max_length; | |
5081 | ||
675ad473 | 5082 | e_dbg("e1000_config_dsp_after_link_change"); |
120a5d0d JB |
5083 | |
5084 | if (hw->phy_type != e1000_phy_igp) | |
5085 | return E1000_SUCCESS; | |
5086 | ||
5087 | if (link_up) { | |
5088 | ret_val = e1000_get_speed_and_duplex(hw, &speed, &duplex); | |
5089 | if (ret_val) { | |
675ad473 | 5090 | e_dbg("Error getting link speed and duplex\n"); |
120a5d0d JB |
5091 | return ret_val; |
5092 | } | |
5093 | ||
5094 | if (speed == SPEED_1000) { | |
5095 | ||
5096 | ret_val = | |
5097 | e1000_get_cable_length(hw, &min_length, | |
5098 | &max_length); | |
5099 | if (ret_val) | |
5100 | return ret_val; | |
5101 | ||
5102 | if ((hw->dsp_config_state == e1000_dsp_config_enabled) | |
5103 | && min_length >= e1000_igp_cable_length_50) { | |
5104 | ||
5105 | for (i = 0; i < IGP01E1000_PHY_CHANNEL_NUM; i++) { | |
5106 | ret_val = | |
5107 | e1000_read_phy_reg(hw, | |
5108 | dsp_reg_array[i], | |
5109 | &phy_data); | |
5110 | if (ret_val) | |
5111 | return ret_val; | |
5112 | ||
5113 | phy_data &= | |
5114 | ~IGP01E1000_PHY_EDAC_MU_INDEX; | |
5115 | ||
5116 | ret_val = | |
5117 | e1000_write_phy_reg(hw, | |
5118 | dsp_reg_array | |
5119 | [i], phy_data); | |
5120 | if (ret_val) | |
5121 | return ret_val; | |
5122 | } | |
5123 | hw->dsp_config_state = | |
5124 | e1000_dsp_config_activated; | |
5125 | } | |
5126 | ||
5127 | if ((hw->ffe_config_state == e1000_ffe_config_enabled) | |
5128 | && (min_length < e1000_igp_cable_length_50)) { | |
5129 | ||
5130 | u16 ffe_idle_err_timeout = | |
5131 | FFE_IDLE_ERR_COUNT_TIMEOUT_20; | |
5132 | u32 idle_errs = 0; | |
5133 | ||
5134 | /* clear previous idle error counts */ | |
5135 | ret_val = | |
5136 | e1000_read_phy_reg(hw, PHY_1000T_STATUS, | |
5137 | &phy_data); | |
5138 | if (ret_val) | |
5139 | return ret_val; | |
5140 | ||
5141 | for (i = 0; i < ffe_idle_err_timeout; i++) { | |
5142 | udelay(1000); | |
5143 | ret_val = | |
5144 | e1000_read_phy_reg(hw, | |
5145 | PHY_1000T_STATUS, | |
5146 | &phy_data); | |
5147 | if (ret_val) | |
5148 | return ret_val; | |
5149 | ||
5150 | idle_errs += | |
5151 | (phy_data & | |
5152 | SR_1000T_IDLE_ERROR_CNT); | |
5153 | if (idle_errs > | |
5154 | SR_1000T_PHY_EXCESSIVE_IDLE_ERR_COUNT) | |
5155 | { | |
5156 | hw->ffe_config_state = | |
5157 | e1000_ffe_config_active; | |
5158 | ||
5159 | ret_val = | |
5160 | e1000_write_phy_reg(hw, | |
5161 | IGP01E1000_PHY_DSP_FFE, | |
5162 | IGP01E1000_PHY_DSP_FFE_CM_CP); | |
5163 | if (ret_val) | |
5164 | return ret_val; | |
5165 | break; | |
5166 | } | |
5167 | ||
5168 | if (idle_errs) | |
5169 | ffe_idle_err_timeout = | |
5170 | FFE_IDLE_ERR_COUNT_TIMEOUT_100; | |
5171 | } | |
5172 | } | |
5173 | } | |
5174 | } else { | |
5175 | if (hw->dsp_config_state == e1000_dsp_config_activated) { | |
5176 | /* Save off the current value of register 0x2F5B to be restored at | |
5177 | * the end of the routines. */ | |
5178 | ret_val = | |
5179 | e1000_read_phy_reg(hw, 0x2F5B, &phy_saved_data); | |
5180 | ||
5181 | if (ret_val) | |
5182 | return ret_val; | |
5183 | ||
5184 | /* Disable the PHY transmitter */ | |
5185 | ret_val = e1000_write_phy_reg(hw, 0x2F5B, 0x0003); | |
5186 | ||
5187 | if (ret_val) | |
5188 | return ret_val; | |
5189 | ||
5190 | mdelay(20); | |
5191 | ||
5192 | ret_val = e1000_write_phy_reg(hw, 0x0000, | |
5193 | IGP01E1000_IEEE_FORCE_GIGA); | |
5194 | if (ret_val) | |
5195 | return ret_val; | |
5196 | for (i = 0; i < IGP01E1000_PHY_CHANNEL_NUM; i++) { | |
5197 | ret_val = | |
5198 | e1000_read_phy_reg(hw, dsp_reg_array[i], | |
5199 | &phy_data); | |
5200 | if (ret_val) | |
5201 | return ret_val; | |
5202 | ||
5203 | phy_data &= ~IGP01E1000_PHY_EDAC_MU_INDEX; | |
5204 | phy_data |= IGP01E1000_PHY_EDAC_SIGN_EXT_9_BITS; | |
5205 | ||
5206 | ret_val = | |
5207 | e1000_write_phy_reg(hw, dsp_reg_array[i], | |
5208 | phy_data); | |
5209 | if (ret_val) | |
5210 | return ret_val; | |
5211 | } | |
5212 | ||
5213 | ret_val = e1000_write_phy_reg(hw, 0x0000, | |
5214 | IGP01E1000_IEEE_RESTART_AUTONEG); | |
5215 | if (ret_val) | |
5216 | return ret_val; | |
5217 | ||
5218 | mdelay(20); | |
5219 | ||
5220 | /* Now enable the transmitter */ | |
5221 | ret_val = | |
5222 | e1000_write_phy_reg(hw, 0x2F5B, phy_saved_data); | |
5223 | ||
5224 | if (ret_val) | |
5225 | return ret_val; | |
5226 | ||
5227 | hw->dsp_config_state = e1000_dsp_config_enabled; | |
5228 | } | |
5229 | ||
5230 | if (hw->ffe_config_state == e1000_ffe_config_active) { | |
5231 | /* Save off the current value of register 0x2F5B to be restored at | |
5232 | * the end of the routines. */ | |
5233 | ret_val = | |
5234 | e1000_read_phy_reg(hw, 0x2F5B, &phy_saved_data); | |
5235 | ||
5236 | if (ret_val) | |
5237 | return ret_val; | |
5238 | ||
5239 | /* Disable the PHY transmitter */ | |
5240 | ret_val = e1000_write_phy_reg(hw, 0x2F5B, 0x0003); | |
5241 | ||
5242 | if (ret_val) | |
5243 | return ret_val; | |
5244 | ||
5245 | mdelay(20); | |
5246 | ||
5247 | ret_val = e1000_write_phy_reg(hw, 0x0000, | |
5248 | IGP01E1000_IEEE_FORCE_GIGA); | |
5249 | if (ret_val) | |
5250 | return ret_val; | |
5251 | ret_val = | |
5252 | e1000_write_phy_reg(hw, IGP01E1000_PHY_DSP_FFE, | |
5253 | IGP01E1000_PHY_DSP_FFE_DEFAULT); | |
5254 | if (ret_val) | |
5255 | return ret_val; | |
5256 | ||
5257 | ret_val = e1000_write_phy_reg(hw, 0x0000, | |
5258 | IGP01E1000_IEEE_RESTART_AUTONEG); | |
5259 | if (ret_val) | |
5260 | return ret_val; | |
5261 | ||
5262 | mdelay(20); | |
5263 | ||
5264 | /* Now enable the transmitter */ | |
5265 | ret_val = | |
5266 | e1000_write_phy_reg(hw, 0x2F5B, phy_saved_data); | |
5267 | ||
5268 | if (ret_val) | |
5269 | return ret_val; | |
5270 | ||
5271 | hw->ffe_config_state = e1000_ffe_config_enabled; | |
5272 | } | |
5273 | } | |
5274 | return E1000_SUCCESS; | |
1da177e4 LT |
5275 | } |
5276 | ||
120a5d0d JB |
5277 | /** |
5278 | * e1000_set_phy_mode - Set PHY to class A mode | |
5279 | * @hw: Struct containing variables accessed by shared code | |
5280 | * | |
1da177e4 LT |
5281 | * Assumes the following operations will follow to enable the new class mode. |
5282 | * 1. Do a PHY soft reset | |
5283 | * 2. Restart auto-negotiation or force link. | |
120a5d0d | 5284 | */ |
64798845 | 5285 | static s32 e1000_set_phy_mode(struct e1000_hw *hw) |
1da177e4 | 5286 | { |
120a5d0d JB |
5287 | s32 ret_val; |
5288 | u16 eeprom_data; | |
5289 | ||
675ad473 | 5290 | e_dbg("e1000_set_phy_mode"); |
120a5d0d JB |
5291 | |
5292 | if ((hw->mac_type == e1000_82545_rev_3) && | |
5293 | (hw->media_type == e1000_media_type_copper)) { | |
5294 | ret_val = | |
5295 | e1000_read_eeprom(hw, EEPROM_PHY_CLASS_WORD, 1, | |
5296 | &eeprom_data); | |
5297 | if (ret_val) { | |
5298 | return ret_val; | |
5299 | } | |
5300 | ||
5301 | if ((eeprom_data != EEPROM_RESERVED_WORD) && | |
5302 | (eeprom_data & EEPROM_PHY_CLASS_A)) { | |
5303 | ret_val = | |
5304 | e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, | |
5305 | 0x000B); | |
5306 | if (ret_val) | |
5307 | return ret_val; | |
5308 | ret_val = | |
5309 | e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, | |
5310 | 0x8104); | |
5311 | if (ret_val) | |
5312 | return ret_val; | |
5313 | ||
5314 | hw->phy_reset_disable = false; | |
5315 | } | |
5316 | } | |
5317 | ||
5318 | return E1000_SUCCESS; | |
1da177e4 LT |
5319 | } |
5320 | ||
120a5d0d JB |
5321 | /** |
5322 | * e1000_set_d3_lplu_state - set d3 link power state | |
5323 | * @hw: Struct containing variables accessed by shared code | |
5324 | * @active: true to enable lplu false to disable lplu. | |
1da177e4 LT |
5325 | * |
5326 | * This function sets the lplu state according to the active flag. When | |
5327 | * activating lplu this function also disables smart speed and vise versa. | |
120a5d0d | 5328 | * lplu will not be activated unless the device autonegotiation advertisement |
1da177e4 | 5329 | * meets standards of either 10 or 10/100 or 10/100/1000 at all duplexes. |
1da177e4 LT |
5330 | * |
5331 | * returns: - E1000_ERR_PHY if fail to read/write the PHY | |
5332 | * E1000_SUCCESS at any other case. | |
120a5d0d | 5333 | */ |
64798845 | 5334 | static s32 e1000_set_d3_lplu_state(struct e1000_hw *hw, bool active) |
1da177e4 | 5335 | { |
120a5d0d JB |
5336 | s32 ret_val; |
5337 | u16 phy_data; | |
675ad473 | 5338 | e_dbg("e1000_set_d3_lplu_state"); |
120a5d0d JB |
5339 | |
5340 | if (hw->phy_type != e1000_phy_igp) | |
5341 | return E1000_SUCCESS; | |
5342 | ||
5343 | /* During driver activity LPLU should not be used or it will attain link | |
5344 | * from the lowest speeds starting from 10Mbps. The capability is used for | |
5345 | * Dx transitions and states */ | |
5346 | if (hw->mac_type == e1000_82541_rev_2 | |
5347 | || hw->mac_type == e1000_82547_rev_2) { | |
5348 | ret_val = | |
5349 | e1000_read_phy_reg(hw, IGP01E1000_GMII_FIFO, &phy_data); | |
5350 | if (ret_val) | |
5351 | return ret_val; | |
5352 | } | |
5353 | ||
5354 | if (!active) { | |
5355 | if (hw->mac_type == e1000_82541_rev_2 || | |
5356 | hw->mac_type == e1000_82547_rev_2) { | |
5357 | phy_data &= ~IGP01E1000_GMII_FLEX_SPD; | |
5358 | ret_val = | |
5359 | e1000_write_phy_reg(hw, IGP01E1000_GMII_FIFO, | |
5360 | phy_data); | |
5361 | if (ret_val) | |
5362 | return ret_val; | |
5363 | } | |
5364 | ||
5365 | /* LPLU and SmartSpeed are mutually exclusive. LPLU is used during | |
5366 | * Dx states where the power conservation is most important. During | |
5367 | * driver activity we should enable SmartSpeed, so performance is | |
5368 | * maintained. */ | |
5369 | if (hw->smart_speed == e1000_smart_speed_on) { | |
5370 | ret_val = | |
5371 | e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, | |
5372 | &phy_data); | |
5373 | if (ret_val) | |
5374 | return ret_val; | |
5375 | ||
5376 | phy_data |= IGP01E1000_PSCFR_SMART_SPEED; | |
5377 | ret_val = | |
5378 | e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, | |
5379 | phy_data); | |
5380 | if (ret_val) | |
5381 | return ret_val; | |
5382 | } else if (hw->smart_speed == e1000_smart_speed_off) { | |
5383 | ret_val = | |
5384 | e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, | |
5385 | &phy_data); | |
5386 | if (ret_val) | |
5387 | return ret_val; | |
5388 | ||
5389 | phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED; | |
5390 | ret_val = | |
5391 | e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, | |
5392 | phy_data); | |
5393 | if (ret_val) | |
5394 | return ret_val; | |
5395 | } | |
5396 | } else if ((hw->autoneg_advertised == AUTONEG_ADVERTISE_SPEED_DEFAULT) | |
5397 | || (hw->autoneg_advertised == AUTONEG_ADVERTISE_10_ALL) | |
5398 | || (hw->autoneg_advertised == | |
5399 | AUTONEG_ADVERTISE_10_100_ALL)) { | |
5400 | ||
5401 | if (hw->mac_type == e1000_82541_rev_2 || | |
5402 | hw->mac_type == e1000_82547_rev_2) { | |
5403 | phy_data |= IGP01E1000_GMII_FLEX_SPD; | |
5404 | ret_val = | |
5405 | e1000_write_phy_reg(hw, IGP01E1000_GMII_FIFO, | |
5406 | phy_data); | |
5407 | if (ret_val) | |
5408 | return ret_val; | |
5409 | } | |
5410 | ||
5411 | /* When LPLU is enabled we should disable SmartSpeed */ | |
5412 | ret_val = | |
5413 | e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, | |
5414 | &phy_data); | |
5415 | if (ret_val) | |
5416 | return ret_val; | |
5417 | ||
5418 | phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED; | |
5419 | ret_val = | |
5420 | e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, | |
5421 | phy_data); | |
5422 | if (ret_val) | |
5423 | return ret_val; | |
5424 | ||
5425 | } | |
5426 | return E1000_SUCCESS; | |
2d7edb92 MC |
5427 | } |
5428 | ||
120a5d0d JB |
5429 | /** |
5430 | * e1000_set_vco_speed | |
5431 | * @hw: Struct containing variables accessed by shared code | |
2d7edb92 | 5432 | * |
120a5d0d JB |
5433 | * Change VCO speed register to improve Bit Error Rate performance of SERDES. |
5434 | */ | |
1532ecea | 5435 | static s32 e1000_set_vco_speed(struct e1000_hw *hw) |
2d7edb92 | 5436 | { |
120a5d0d JB |
5437 | s32 ret_val; |
5438 | u16 default_page = 0; | |
5439 | u16 phy_data; | |
2d7edb92 | 5440 | |
675ad473 | 5441 | e_dbg("e1000_set_vco_speed"); |
2d7edb92 | 5442 | |
120a5d0d JB |
5443 | switch (hw->mac_type) { |
5444 | case e1000_82545_rev_3: | |
5445 | case e1000_82546_rev_3: | |
5446 | break; | |
5447 | default: | |
5448 | return E1000_SUCCESS; | |
5449 | } | |
1da177e4 | 5450 | |
120a5d0d | 5451 | /* Set PHY register 30, page 5, bit 8 to 0 */ |
1da177e4 | 5452 | |
120a5d0d JB |
5453 | ret_val = |
5454 | e1000_read_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, &default_page); | |
5455 | if (ret_val) | |
5456 | return ret_val; | |
1da177e4 | 5457 | |
120a5d0d JB |
5458 | ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0005); |
5459 | if (ret_val) | |
5460 | return ret_val; | |
1da177e4 | 5461 | |
120a5d0d JB |
5462 | ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, &phy_data); |
5463 | if (ret_val) | |
5464 | return ret_val; | |
1da177e4 | 5465 | |
120a5d0d JB |
5466 | phy_data &= ~M88E1000_PHY_VCO_REG_BIT8; |
5467 | ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, phy_data); | |
5468 | if (ret_val) | |
5469 | return ret_val; | |
1da177e4 | 5470 | |
120a5d0d | 5471 | /* Set PHY register 30, page 4, bit 11 to 1 */ |
1da177e4 | 5472 | |
120a5d0d JB |
5473 | ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0004); |
5474 | if (ret_val) | |
5475 | return ret_val; | |
1da177e4 | 5476 | |
120a5d0d JB |
5477 | ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, &phy_data); |
5478 | if (ret_val) | |
5479 | return ret_val; | |
1da177e4 | 5480 | |
120a5d0d JB |
5481 | phy_data |= M88E1000_PHY_VCO_REG_BIT11; |
5482 | ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, phy_data); | |
5483 | if (ret_val) | |
5484 | return ret_val; | |
1da177e4 | 5485 | |
120a5d0d JB |
5486 | ret_val = |
5487 | e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, default_page); | |
5488 | if (ret_val) | |
5489 | return ret_val; | |
1da177e4 | 5490 | |
120a5d0d | 5491 | return E1000_SUCCESS; |
1da177e4 LT |
5492 | } |
5493 | ||
1da177e4 | 5494 | |
120a5d0d JB |
5495 | /** |
5496 | * e1000_enable_mng_pass_thru - check for bmc pass through | |
5497 | * @hw: Struct containing variables accessed by shared code | |
2d7edb92 | 5498 | * |
120a5d0d | 5499 | * Verifies the hardware needs to allow ARPs to be processed by the host |
c3033b01 | 5500 | * returns: - true/false |
120a5d0d | 5501 | */ |
64798845 | 5502 | u32 e1000_enable_mng_pass_thru(struct e1000_hw *hw) |
2d7edb92 | 5503 | { |
120a5d0d JB |
5504 | u32 manc; |
5505 | ||
5506 | if (hw->asf_firmware_present) { | |
5507 | manc = er32(MANC); | |
5508 | ||
5509 | if (!(manc & E1000_MANC_RCV_TCO_EN) || | |
5510 | !(manc & E1000_MANC_EN_MAC_ADDR_FILTER)) | |
5511 | return false; | |
5512 | if ((manc & E1000_MANC_SMBUS_EN) && !(manc & E1000_MANC_ASF_EN)) | |
5513 | return true; | |
5514 | } | |
5515 | return false; | |
2d7edb92 MC |
5516 | } |
5517 | ||
64798845 | 5518 | static s32 e1000_polarity_reversal_workaround(struct e1000_hw *hw) |
2d7edb92 | 5519 | { |
120a5d0d JB |
5520 | s32 ret_val; |
5521 | u16 mii_status_reg; | |
5522 | u16 i; | |
5523 | ||
5524 | /* Polarity reversal workaround for forced 10F/10H links. */ | |
5525 | ||
5526 | /* Disable the transmitter on the PHY */ | |
5527 | ||
5528 | ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0019); | |
5529 | if (ret_val) | |
5530 | return ret_val; | |
5531 | ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, 0xFFFF); | |
5532 | if (ret_val) | |
5533 | return ret_val; | |
5534 | ||
5535 | ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0000); | |
5536 | if (ret_val) | |
5537 | return ret_val; | |
5538 | ||
5539 | /* This loop will early-out if the NO link condition has been met. */ | |
5540 | for (i = PHY_FORCE_TIME; i > 0; i--) { | |
5541 | /* Read the MII Status Register and wait for Link Status bit | |
5542 | * to be clear. | |
5543 | */ | |
5544 | ||
5545 | ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg); | |
5546 | if (ret_val) | |
5547 | return ret_val; | |
5548 | ||
5549 | ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg); | |
5550 | if (ret_val) | |
5551 | return ret_val; | |
5552 | ||
5553 | if ((mii_status_reg & ~MII_SR_LINK_STATUS) == 0) | |
5554 | break; | |
5555 | mdelay(100); | |
5556 | } | |
5557 | ||
5558 | /* Recommended delay time after link has been lost */ | |
5559 | mdelay(1000); | |
5560 | ||
5561 | /* Now we will re-enable th transmitter on the PHY */ | |
5562 | ||
5563 | ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0019); | |
5564 | if (ret_val) | |
5565 | return ret_val; | |
5566 | mdelay(50); | |
5567 | ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, 0xFFF0); | |
5568 | if (ret_val) | |
5569 | return ret_val; | |
5570 | mdelay(50); | |
5571 | ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, 0xFF00); | |
5572 | if (ret_val) | |
5573 | return ret_val; | |
5574 | mdelay(50); | |
5575 | ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, 0x0000); | |
5576 | if (ret_val) | |
5577 | return ret_val; | |
5578 | ||
5579 | ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0000); | |
5580 | if (ret_val) | |
5581 | return ret_val; | |
5582 | ||
5583 | /* This loop will early-out if the link condition has been met. */ | |
5584 | for (i = PHY_FORCE_TIME; i > 0; i--) { | |
5585 | /* Read the MII Status Register and wait for Link Status bit | |
5586 | * to be set. | |
5587 | */ | |
5588 | ||
5589 | ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg); | |
5590 | if (ret_val) | |
5591 | return ret_val; | |
5592 | ||
5593 | ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg); | |
5594 | if (ret_val) | |
5595 | return ret_val; | |
5596 | ||
5597 | if (mii_status_reg & MII_SR_LINK_STATUS) | |
5598 | break; | |
5599 | mdelay(100); | |
5600 | } | |
5601 | return E1000_SUCCESS; | |
1da177e4 LT |
5602 | } |
5603 | ||
120a5d0d JB |
5604 | /** |
5605 | * e1000_get_auto_rd_done | |
5606 | * @hw: Struct containing variables accessed by shared code | |
2d7edb92 | 5607 | * |
1532ecea | 5608 | * Check for EEPROM Auto Read bit done. |
1532ecea JB |
5609 | * returns: - E1000_ERR_RESET if fail to reset MAC |
5610 | * E1000_SUCCESS at any other case. | |
120a5d0d | 5611 | */ |
1532ecea | 5612 | static s32 e1000_get_auto_rd_done(struct e1000_hw *hw) |
2d7edb92 | 5613 | { |
675ad473 | 5614 | e_dbg("e1000_get_auto_rd_done"); |
120a5d0d JB |
5615 | msleep(5); |
5616 | return E1000_SUCCESS; | |
1532ecea | 5617 | } |
2d7edb92 | 5618 | |
120a5d0d JB |
5619 | /** |
5620 | * e1000_get_phy_cfg_done | |
5621 | * @hw: Struct containing variables accessed by shared code | |
1532ecea | 5622 | * |
120a5d0d | 5623 | * Checks if the PHY configuration is done |
1532ecea JB |
5624 | * returns: - E1000_ERR_RESET if fail to reset MAC |
5625 | * E1000_SUCCESS at any other case. | |
120a5d0d | 5626 | */ |
1532ecea JB |
5627 | static s32 e1000_get_phy_cfg_done(struct e1000_hw *hw) |
5628 | { | |
675ad473 | 5629 | e_dbg("e1000_get_phy_cfg_done"); |
120a5d0d JB |
5630 | mdelay(10); |
5631 | return E1000_SUCCESS; | |
2d7edb92 | 5632 | } |