]>
Commit | Line | Data |
---|---|---|
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 | 109 | static DEFINE_SPINLOCK(e1000_eeprom_lock); |
ac56558f | 110 | static DEFINE_SPINLOCK(e1000_phy_lock); |
78566fec | 111 | |
120a5d0d JB |
112 | /** |
113 | * e1000_set_phy_type - Set the phy type member in the hw struct. | |
114 | * @hw: Struct containing variables accessed by shared code | |
115 | */ | |
64798845 | 116 | static s32 e1000_set_phy_type(struct e1000_hw *hw) |
1da177e4 | 117 | { |
675ad473 | 118 | e_dbg("e1000_set_phy_type"); |
1da177e4 | 119 | |
120a5d0d JB |
120 | if (hw->mac_type == e1000_undefined) |
121 | return -E1000_ERR_PHY_TYPE; | |
1da177e4 | 122 | |
120a5d0d JB |
123 | switch (hw->phy_id) { |
124 | case M88E1000_E_PHY_ID: | |
125 | case M88E1000_I_PHY_ID: | |
126 | case M88E1011_I_PHY_ID: | |
127 | case M88E1111_I_PHY_ID: | |
cf8e09b0 | 128 | case M88E1118_E_PHY_ID: |
120a5d0d JB |
129 | hw->phy_type = e1000_phy_m88; |
130 | break; | |
131 | case IGP01E1000_I_PHY_ID: | |
132 | if (hw->mac_type == e1000_82541 || | |
133 | hw->mac_type == e1000_82541_rev_2 || | |
134 | hw->mac_type == e1000_82547 || | |
5377a416 | 135 | hw->mac_type == e1000_82547_rev_2) |
120a5d0d | 136 | hw->phy_type = e1000_phy_igp; |
5377a416 DB |
137 | break; |
138 | case RTL8211B_PHY_ID: | |
139 | hw->phy_type = e1000_phy_8211; | |
140 | break; | |
141 | case RTL8201N_PHY_ID: | |
142 | hw->phy_type = e1000_phy_8201; | |
143 | break; | |
120a5d0d JB |
144 | default: |
145 | /* Should never have loaded on this device */ | |
146 | hw->phy_type = e1000_phy_undefined; | |
147 | return -E1000_ERR_PHY_TYPE; | |
148 | } | |
1da177e4 | 149 | |
120a5d0d JB |
150 | return E1000_SUCCESS; |
151 | } | |
1da177e4 | 152 | |
120a5d0d JB |
153 | /** |
154 | * e1000_phy_init_script - IGP phy init script - initializes the GbE PHY | |
155 | * @hw: Struct containing variables accessed by shared code | |
156 | */ | |
157 | static void e1000_phy_init_script(struct e1000_hw *hw) | |
158 | { | |
159 | u32 ret_val; | |
160 | u16 phy_saved_data; | |
161 | ||
675ad473 | 162 | e_dbg("e1000_phy_init_script"); |
120a5d0d JB |
163 | |
164 | if (hw->phy_init_script) { | |
165 | msleep(20); | |
166 | ||
6cfbd97b JK |
167 | /* Save off the current value of register 0x2F5B to be restored |
168 | * at the end of this routine. | |
169 | */ | |
120a5d0d JB |
170 | ret_val = e1000_read_phy_reg(hw, 0x2F5B, &phy_saved_data); |
171 | ||
172 | /* Disabled the PHY transmitter */ | |
173 | e1000_write_phy_reg(hw, 0x2F5B, 0x0003); | |
174 | msleep(20); | |
175 | ||
176 | e1000_write_phy_reg(hw, 0x0000, 0x0140); | |
177 | msleep(5); | |
178 | ||
179 | switch (hw->mac_type) { | |
180 | case e1000_82541: | |
181 | case e1000_82547: | |
182 | e1000_write_phy_reg(hw, 0x1F95, 0x0001); | |
183 | e1000_write_phy_reg(hw, 0x1F71, 0xBD21); | |
184 | e1000_write_phy_reg(hw, 0x1F79, 0x0018); | |
185 | e1000_write_phy_reg(hw, 0x1F30, 0x1600); | |
186 | e1000_write_phy_reg(hw, 0x1F31, 0x0014); | |
187 | e1000_write_phy_reg(hw, 0x1F32, 0x161C); | |
188 | e1000_write_phy_reg(hw, 0x1F94, 0x0003); | |
189 | e1000_write_phy_reg(hw, 0x1F96, 0x003F); | |
190 | e1000_write_phy_reg(hw, 0x2010, 0x0008); | |
191 | break; | |
1da177e4 | 192 | |
120a5d0d JB |
193 | case e1000_82541_rev_2: |
194 | case e1000_82547_rev_2: | |
195 | e1000_write_phy_reg(hw, 0x1F73, 0x0099); | |
196 | break; | |
197 | default: | |
198 | break; | |
199 | } | |
1da177e4 | 200 | |
120a5d0d JB |
201 | e1000_write_phy_reg(hw, 0x0000, 0x3300); |
202 | msleep(20); | |
203 | ||
204 | /* Now enable the transmitter */ | |
205 | e1000_write_phy_reg(hw, 0x2F5B, phy_saved_data); | |
206 | ||
207 | if (hw->mac_type == e1000_82547) { | |
208 | u16 fused, fine, coarse; | |
209 | ||
210 | /* Move to analog registers page */ | |
211 | e1000_read_phy_reg(hw, | |
212 | IGP01E1000_ANALOG_SPARE_FUSE_STATUS, | |
213 | &fused); | |
214 | ||
215 | if (!(fused & IGP01E1000_ANALOG_SPARE_FUSE_ENABLED)) { | |
216 | e1000_read_phy_reg(hw, | |
217 | IGP01E1000_ANALOG_FUSE_STATUS, | |
218 | &fused); | |
219 | ||
220 | fine = fused & IGP01E1000_ANALOG_FUSE_FINE_MASK; | |
221 | coarse = | |
222 | fused & IGP01E1000_ANALOG_FUSE_COARSE_MASK; | |
223 | ||
224 | if (coarse > | |
225 | IGP01E1000_ANALOG_FUSE_COARSE_THRESH) { | |
226 | coarse -= | |
227 | IGP01E1000_ANALOG_FUSE_COARSE_10; | |
228 | fine -= IGP01E1000_ANALOG_FUSE_FINE_1; | |
229 | } else if (coarse == | |
230 | IGP01E1000_ANALOG_FUSE_COARSE_THRESH) | |
231 | fine -= IGP01E1000_ANALOG_FUSE_FINE_10; | |
232 | ||
233 | fused = | |
234 | (fused & IGP01E1000_ANALOG_FUSE_POLY_MASK) | | |
235 | (fine & IGP01E1000_ANALOG_FUSE_FINE_MASK) | | |
236 | (coarse & | |
237 | IGP01E1000_ANALOG_FUSE_COARSE_MASK); | |
238 | ||
239 | e1000_write_phy_reg(hw, | |
240 | IGP01E1000_ANALOG_FUSE_CONTROL, | |
241 | fused); | |
242 | e1000_write_phy_reg(hw, | |
243 | IGP01E1000_ANALOG_FUSE_BYPASS, | |
244 | IGP01E1000_ANALOG_FUSE_ENABLE_SW_CONTROL); | |
245 | } | |
246 | } | |
247 | } | |
1da177e4 LT |
248 | } |
249 | ||
120a5d0d JB |
250 | /** |
251 | * e1000_set_mac_type - Set the mac type member in the hw struct. | |
252 | * @hw: Struct containing variables accessed by shared code | |
253 | */ | |
64798845 | 254 | s32 e1000_set_mac_type(struct e1000_hw *hw) |
1da177e4 | 255 | { |
675ad473 | 256 | e_dbg("e1000_set_mac_type"); |
bd2371eb JG |
257 | |
258 | switch (hw->device_id) { | |
259 | case E1000_DEV_ID_82542: | |
260 | switch (hw->revision_id) { | |
261 | case E1000_82542_2_0_REV_ID: | |
262 | hw->mac_type = e1000_82542_rev2_0; | |
263 | break; | |
264 | case E1000_82542_2_1_REV_ID: | |
265 | hw->mac_type = e1000_82542_rev2_1; | |
266 | break; | |
267 | default: | |
268 | /* Invalid 82542 revision ID */ | |
269 | return -E1000_ERR_MAC_TYPE; | |
270 | } | |
271 | break; | |
272 | case E1000_DEV_ID_82543GC_FIBER: | |
273 | case E1000_DEV_ID_82543GC_COPPER: | |
274 | hw->mac_type = e1000_82543; | |
275 | break; | |
276 | case E1000_DEV_ID_82544EI_COPPER: | |
277 | case E1000_DEV_ID_82544EI_FIBER: | |
278 | case E1000_DEV_ID_82544GC_COPPER: | |
279 | case E1000_DEV_ID_82544GC_LOM: | |
280 | hw->mac_type = e1000_82544; | |
281 | break; | |
282 | case E1000_DEV_ID_82540EM: | |
283 | case E1000_DEV_ID_82540EM_LOM: | |
284 | case E1000_DEV_ID_82540EP: | |
285 | case E1000_DEV_ID_82540EP_LOM: | |
286 | case E1000_DEV_ID_82540EP_LP: | |
287 | hw->mac_type = e1000_82540; | |
288 | break; | |
289 | case E1000_DEV_ID_82545EM_COPPER: | |
290 | case E1000_DEV_ID_82545EM_FIBER: | |
291 | hw->mac_type = e1000_82545; | |
292 | break; | |
293 | case E1000_DEV_ID_82545GM_COPPER: | |
294 | case E1000_DEV_ID_82545GM_FIBER: | |
295 | case E1000_DEV_ID_82545GM_SERDES: | |
296 | hw->mac_type = e1000_82545_rev_3; | |
297 | break; | |
298 | case E1000_DEV_ID_82546EB_COPPER: | |
299 | case E1000_DEV_ID_82546EB_FIBER: | |
300 | case E1000_DEV_ID_82546EB_QUAD_COPPER: | |
301 | hw->mac_type = e1000_82546; | |
302 | break; | |
303 | case E1000_DEV_ID_82546GB_COPPER: | |
304 | case E1000_DEV_ID_82546GB_FIBER: | |
305 | case E1000_DEV_ID_82546GB_SERDES: | |
306 | case E1000_DEV_ID_82546GB_PCIE: | |
307 | case E1000_DEV_ID_82546GB_QUAD_COPPER: | |
308 | case E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3: | |
309 | hw->mac_type = e1000_82546_rev_3; | |
310 | break; | |
311 | case E1000_DEV_ID_82541EI: | |
312 | case E1000_DEV_ID_82541EI_MOBILE: | |
313 | case E1000_DEV_ID_82541ER_LOM: | |
314 | hw->mac_type = e1000_82541; | |
315 | break; | |
316 | case E1000_DEV_ID_82541ER: | |
317 | case E1000_DEV_ID_82541GI: | |
318 | case E1000_DEV_ID_82541GI_LF: | |
319 | case E1000_DEV_ID_82541GI_MOBILE: | |
320 | hw->mac_type = e1000_82541_rev_2; | |
321 | break; | |
322 | case E1000_DEV_ID_82547EI: | |
323 | case E1000_DEV_ID_82547EI_MOBILE: | |
324 | hw->mac_type = e1000_82547; | |
325 | break; | |
326 | case E1000_DEV_ID_82547GI: | |
327 | hw->mac_type = e1000_82547_rev_2; | |
328 | break; | |
5377a416 DB |
329 | case E1000_DEV_ID_INTEL_CE4100_GBE: |
330 | hw->mac_type = e1000_ce4100; | |
331 | break; | |
bd2371eb JG |
332 | default: |
333 | /* Should never have loaded on this device */ | |
334 | return -E1000_ERR_MAC_TYPE; | |
335 | } | |
336 | ||
337 | switch (hw->mac_type) { | |
bd2371eb JG |
338 | case e1000_82541: |
339 | case e1000_82547: | |
340 | case e1000_82541_rev_2: | |
341 | case e1000_82547_rev_2: | |
c3033b01 | 342 | hw->asf_firmware_present = true; |
bd2371eb JG |
343 | break; |
344 | default: | |
345 | break; | |
346 | } | |
347 | ||
167fb284 JG |
348 | /* The 82543 chip does not count tx_carrier_errors properly in |
349 | * FD mode | |
350 | */ | |
351 | if (hw->mac_type == e1000_82543) | |
c3033b01 | 352 | hw->bad_tx_carr_stats_fd = true; |
167fb284 | 353 | |
15e376b4 | 354 | if (hw->mac_type > e1000_82544) |
c3033b01 | 355 | hw->has_smbus = true; |
bb8e3311 | 356 | |
bd2371eb | 357 | return E1000_SUCCESS; |
1da177e4 LT |
358 | } |
359 | ||
120a5d0d JB |
360 | /** |
361 | * e1000_set_media_type - Set media type and TBI compatibility. | |
362 | * @hw: Struct containing variables accessed by shared code | |
363 | */ | |
64798845 | 364 | void e1000_set_media_type(struct e1000_hw *hw) |
1da177e4 | 365 | { |
120a5d0d JB |
366 | u32 status; |
367 | ||
675ad473 | 368 | e_dbg("e1000_set_media_type"); |
120a5d0d JB |
369 | |
370 | if (hw->mac_type != e1000_82543) { | |
371 | /* tbi_compatibility is only valid on 82543 */ | |
372 | hw->tbi_compatibility_en = false; | |
373 | } | |
374 | ||
375 | switch (hw->device_id) { | |
376 | case E1000_DEV_ID_82545GM_SERDES: | |
377 | case E1000_DEV_ID_82546GB_SERDES: | |
378 | hw->media_type = e1000_media_type_internal_serdes; | |
379 | break; | |
380 | default: | |
381 | switch (hw->mac_type) { | |
382 | case e1000_82542_rev2_0: | |
383 | case e1000_82542_rev2_1: | |
384 | hw->media_type = e1000_media_type_fiber; | |
385 | break; | |
5377a416 DB |
386 | case e1000_ce4100: |
387 | hw->media_type = e1000_media_type_copper; | |
388 | break; | |
120a5d0d JB |
389 | default: |
390 | status = er32(STATUS); | |
391 | if (status & E1000_STATUS_TBIMODE) { | |
392 | hw->media_type = e1000_media_type_fiber; | |
393 | /* tbi_compatibility not valid on fiber */ | |
394 | hw->tbi_compatibility_en = false; | |
395 | } else { | |
396 | hw->media_type = e1000_media_type_copper; | |
397 | } | |
398 | break; | |
399 | } | |
400 | } | |
1da177e4 LT |
401 | } |
402 | ||
120a5d0d | 403 | /** |
49ce9c2c | 404 | * e1000_reset_hw - reset the hardware completely |
120a5d0d | 405 | * @hw: Struct containing variables accessed by shared code |
1da177e4 | 406 | * |
120a5d0d JB |
407 | * Reset the transmit and receive units; mask and clear all interrupts. |
408 | */ | |
64798845 | 409 | s32 e1000_reset_hw(struct e1000_hw *hw) |
1da177e4 | 410 | { |
120a5d0d JB |
411 | u32 ctrl; |
412 | u32 ctrl_ext; | |
413 | u32 icr; | |
414 | u32 manc; | |
415 | u32 led_ctrl; | |
416 | s32 ret_val; | |
417 | ||
675ad473 | 418 | e_dbg("e1000_reset_hw"); |
120a5d0d JB |
419 | |
420 | /* For 82542 (rev 2.0), disable MWI before issuing a device reset */ | |
421 | if (hw->mac_type == e1000_82542_rev2_0) { | |
675ad473 | 422 | e_dbg("Disabling MWI on 82542 rev 2.0\n"); |
120a5d0d JB |
423 | e1000_pci_clear_mwi(hw); |
424 | } | |
425 | ||
426 | /* Clear interrupt mask to stop board from generating interrupts */ | |
675ad473 | 427 | e_dbg("Masking off all interrupts\n"); |
120a5d0d JB |
428 | ew32(IMC, 0xffffffff); |
429 | ||
430 | /* Disable the Transmit and Receive units. Then delay to allow | |
431 | * any pending transactions to complete before we hit the MAC with | |
432 | * the global reset. | |
433 | */ | |
434 | ew32(RCTL, 0); | |
435 | ew32(TCTL, E1000_TCTL_PSP); | |
436 | E1000_WRITE_FLUSH(); | |
437 | ||
438 | /* The tbi_compatibility_on Flag must be cleared when Rctl is cleared. */ | |
439 | hw->tbi_compatibility_on = false; | |
440 | ||
441 | /* Delay to allow any outstanding PCI transactions to complete before | |
442 | * resetting the device | |
443 | */ | |
444 | msleep(10); | |
445 | ||
446 | ctrl = er32(CTRL); | |
447 | ||
448 | /* Must reset the PHY before resetting the MAC */ | |
449 | if ((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_82547)) { | |
450 | ew32(CTRL, (ctrl | E1000_CTRL_PHY_RST)); | |
945a5151 | 451 | E1000_WRITE_FLUSH(); |
120a5d0d JB |
452 | msleep(5); |
453 | } | |
454 | ||
455 | /* Issue a global reset to the MAC. This will reset the chip's | |
456 | * transmit, receive, DMA, and link units. It will not effect | |
457 | * the current PCI configuration. The global reset bit is self- | |
458 | * clearing, and should clear within a microsecond. | |
459 | */ | |
675ad473 | 460 | e_dbg("Issuing a global reset to MAC\n"); |
120a5d0d JB |
461 | |
462 | switch (hw->mac_type) { | |
463 | case e1000_82544: | |
464 | case e1000_82540: | |
465 | case e1000_82545: | |
466 | case e1000_82546: | |
467 | case e1000_82541: | |
468 | case e1000_82541_rev_2: | |
469 | /* These controllers can't ack the 64-bit write when issuing the | |
6cfbd97b JK |
470 | * reset, so use IO-mapping as a workaround to issue the reset |
471 | */ | |
120a5d0d JB |
472 | E1000_WRITE_REG_IO(hw, CTRL, (ctrl | E1000_CTRL_RST)); |
473 | break; | |
474 | case e1000_82545_rev_3: | |
475 | case e1000_82546_rev_3: | |
476 | /* Reset is performed on a shadow of the control register */ | |
477 | ew32(CTRL_DUP, (ctrl | E1000_CTRL_RST)); | |
478 | break; | |
5377a416 | 479 | case e1000_ce4100: |
120a5d0d JB |
480 | default: |
481 | ew32(CTRL, (ctrl | E1000_CTRL_RST)); | |
482 | break; | |
483 | } | |
484 | ||
6cfbd97b JK |
485 | /* After MAC reset, force reload of EEPROM to restore power-on settings |
486 | * to device. Later controllers reload the EEPROM automatically, so | |
487 | * just wait for reload to complete. | |
120a5d0d JB |
488 | */ |
489 | switch (hw->mac_type) { | |
490 | case e1000_82542_rev2_0: | |
491 | case e1000_82542_rev2_1: | |
492 | case e1000_82543: | |
493 | case e1000_82544: | |
494 | /* Wait for reset to complete */ | |
495 | udelay(10); | |
496 | ctrl_ext = er32(CTRL_EXT); | |
497 | ctrl_ext |= E1000_CTRL_EXT_EE_RST; | |
498 | ew32(CTRL_EXT, ctrl_ext); | |
499 | E1000_WRITE_FLUSH(); | |
500 | /* Wait for EEPROM reload */ | |
501 | msleep(2); | |
502 | break; | |
503 | case e1000_82541: | |
504 | case e1000_82541_rev_2: | |
505 | case e1000_82547: | |
506 | case e1000_82547_rev_2: | |
507 | /* Wait for EEPROM reload */ | |
508 | msleep(20); | |
509 | break; | |
510 | default: | |
511 | /* Auto read done will delay 5ms or poll based on mac type */ | |
512 | ret_val = e1000_get_auto_rd_done(hw); | |
513 | if (ret_val) | |
514 | return ret_val; | |
515 | break; | |
516 | } | |
517 | ||
518 | /* Disable HW ARPs on ASF enabled adapters */ | |
519 | if (hw->mac_type >= e1000_82540) { | |
520 | manc = er32(MANC); | |
521 | manc &= ~(E1000_MANC_ARP_EN); | |
522 | ew32(MANC, manc); | |
523 | } | |
524 | ||
525 | if ((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_82547)) { | |
526 | e1000_phy_init_script(hw); | |
527 | ||
528 | /* Configure activity LED after PHY reset */ | |
529 | led_ctrl = er32(LEDCTL); | |
530 | led_ctrl &= IGP_ACTIVITY_LED_MASK; | |
531 | led_ctrl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE); | |
532 | ew32(LEDCTL, led_ctrl); | |
533 | } | |
534 | ||
535 | /* Clear interrupt mask to stop board from generating interrupts */ | |
675ad473 | 536 | e_dbg("Masking off all interrupts\n"); |
120a5d0d JB |
537 | ew32(IMC, 0xffffffff); |
538 | ||
539 | /* Clear any pending interrupt events. */ | |
540 | icr = er32(ICR); | |
541 | ||
542 | /* If MWI was previously enabled, reenable it. */ | |
543 | if (hw->mac_type == e1000_82542_rev2_0) { | |
544 | if (hw->pci_cmd_word & PCI_COMMAND_INVALIDATE) | |
545 | e1000_pci_set_mwi(hw); | |
546 | } | |
547 | ||
548 | return E1000_SUCCESS; | |
1da177e4 LT |
549 | } |
550 | ||
120a5d0d | 551 | /** |
49ce9c2c | 552 | * e1000_init_hw - Performs basic configuration of the adapter. |
120a5d0d | 553 | * @hw: Struct containing variables accessed by shared code |
1da177e4 LT |
554 | * |
555 | * Assumes that the controller has previously been reset and is in a | |
556 | * post-reset uninitialized state. Initializes the receive address registers, | |
557 | * multicast table, and VLAN filter table. Calls routines to setup link | |
558 | * configuration and flow control settings. Clears all on-chip counters. Leaves | |
559 | * the transmit and receive units disabled and uninitialized. | |
120a5d0d | 560 | */ |
64798845 | 561 | s32 e1000_init_hw(struct e1000_hw *hw) |
1da177e4 | 562 | { |
120a5d0d JB |
563 | u32 ctrl; |
564 | u32 i; | |
565 | s32 ret_val; | |
566 | u32 mta_size; | |
567 | u32 ctrl_ext; | |
568 | ||
675ad473 | 569 | e_dbg("e1000_init_hw"); |
120a5d0d JB |
570 | |
571 | /* Initialize Identification LED */ | |
572 | ret_val = e1000_id_led_init(hw); | |
573 | if (ret_val) { | |
675ad473 | 574 | e_dbg("Error Initializing Identification LED\n"); |
120a5d0d JB |
575 | return ret_val; |
576 | } | |
577 | ||
578 | /* Set the media type and TBI compatibility */ | |
579 | e1000_set_media_type(hw); | |
580 | ||
581 | /* Disabling VLAN filtering. */ | |
675ad473 | 582 | e_dbg("Initializing the IEEE VLAN\n"); |
120a5d0d JB |
583 | if (hw->mac_type < e1000_82545_rev_3) |
584 | ew32(VET, 0); | |
585 | e1000_clear_vfta(hw); | |
586 | ||
587 | /* For 82542 (rev 2.0), disable MWI and put the receiver into reset */ | |
588 | if (hw->mac_type == e1000_82542_rev2_0) { | |
675ad473 | 589 | e_dbg("Disabling MWI on 82542 rev 2.0\n"); |
120a5d0d JB |
590 | e1000_pci_clear_mwi(hw); |
591 | ew32(RCTL, E1000_RCTL_RST); | |
592 | E1000_WRITE_FLUSH(); | |
593 | msleep(5); | |
594 | } | |
595 | ||
6cfbd97b JK |
596 | /* Setup the receive address. This involves initializing all of the |
597 | * Receive Address Registers (RARs 0 - 15). | |
120a5d0d JB |
598 | */ |
599 | e1000_init_rx_addrs(hw); | |
600 | ||
601 | /* For 82542 (rev 2.0), take the receiver out of reset and enable MWI */ | |
602 | if (hw->mac_type == e1000_82542_rev2_0) { | |
603 | ew32(RCTL, 0); | |
604 | E1000_WRITE_FLUSH(); | |
605 | msleep(1); | |
606 | if (hw->pci_cmd_word & PCI_COMMAND_INVALIDATE) | |
607 | e1000_pci_set_mwi(hw); | |
608 | } | |
609 | ||
610 | /* Zero out the Multicast HASH table */ | |
675ad473 | 611 | e_dbg("Zeroing the MTA\n"); |
120a5d0d JB |
612 | mta_size = E1000_MC_TBL_SIZE; |
613 | for (i = 0; i < mta_size; i++) { | |
614 | E1000_WRITE_REG_ARRAY(hw, MTA, i, 0); | |
615 | /* use write flush to prevent Memory Write Block (MWB) from | |
6cfbd97b JK |
616 | * occurring when accessing our register space |
617 | */ | |
120a5d0d JB |
618 | E1000_WRITE_FLUSH(); |
619 | } | |
620 | ||
621 | /* Set the PCI priority bit correctly in the CTRL register. This | |
622 | * determines if the adapter gives priority to receives, or if it | |
623 | * gives equal priority to transmits and receives. Valid only on | |
624 | * 82542 and 82543 silicon. | |
625 | */ | |
626 | if (hw->dma_fairness && hw->mac_type <= e1000_82543) { | |
627 | ctrl = er32(CTRL); | |
628 | ew32(CTRL, ctrl | E1000_CTRL_PRIOR); | |
629 | } | |
630 | ||
631 | switch (hw->mac_type) { | |
632 | case e1000_82545_rev_3: | |
633 | case e1000_82546_rev_3: | |
634 | break; | |
635 | default: | |
6cfbd97b JK |
636 | /* Workaround for PCI-X problem when BIOS sets MMRBC |
637 | * incorrectly. | |
638 | */ | |
120a5d0d JB |
639 | if (hw->bus_type == e1000_bus_type_pcix |
640 | && e1000_pcix_get_mmrbc(hw) > 2048) | |
641 | e1000_pcix_set_mmrbc(hw, 2048); | |
642 | break; | |
643 | } | |
644 | ||
645 | /* Call a subroutine to configure the link and setup flow control. */ | |
646 | ret_val = e1000_setup_link(hw); | |
647 | ||
648 | /* Set the transmit descriptor write-back policy */ | |
649 | if (hw->mac_type > e1000_82544) { | |
650 | ctrl = er32(TXDCTL); | |
651 | ctrl = | |
652 | (ctrl & ~E1000_TXDCTL_WTHRESH) | | |
653 | E1000_TXDCTL_FULL_TX_DESC_WB; | |
654 | ew32(TXDCTL, ctrl); | |
655 | } | |
656 | ||
657 | /* Clear all of the statistics registers (clear on read). It is | |
658 | * important that we do this after we have tried to establish link | |
659 | * because the symbol error count will increment wildly if there | |
660 | * is no link. | |
661 | */ | |
662 | e1000_clear_hw_cntrs(hw); | |
663 | ||
664 | if (hw->device_id == E1000_DEV_ID_82546GB_QUAD_COPPER || | |
665 | hw->device_id == E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3) { | |
666 | ctrl_ext = er32(CTRL_EXT); | |
667 | /* Relaxed ordering must be disabled to avoid a parity | |
6cfbd97b JK |
668 | * error crash in a PCI slot. |
669 | */ | |
120a5d0d JB |
670 | ctrl_ext |= E1000_CTRL_EXT_RO_DIS; |
671 | ew32(CTRL_EXT, ctrl_ext); | |
672 | } | |
673 | ||
674 | return ret_val; | |
1da177e4 LT |
675 | } |
676 | ||
120a5d0d JB |
677 | /** |
678 | * e1000_adjust_serdes_amplitude - Adjust SERDES output amplitude based on EEPROM setting. | |
679 | * @hw: Struct containing variables accessed by shared code. | |
680 | */ | |
64798845 | 681 | static s32 e1000_adjust_serdes_amplitude(struct e1000_hw *hw) |
1da177e4 | 682 | { |
120a5d0d JB |
683 | u16 eeprom_data; |
684 | s32 ret_val; | |
685 | ||
675ad473 | 686 | e_dbg("e1000_adjust_serdes_amplitude"); |
120a5d0d JB |
687 | |
688 | if (hw->media_type != e1000_media_type_internal_serdes) | |
689 | return E1000_SUCCESS; | |
690 | ||
691 | switch (hw->mac_type) { | |
692 | case e1000_82545_rev_3: | |
693 | case e1000_82546_rev_3: | |
694 | break; | |
695 | default: | |
696 | return E1000_SUCCESS; | |
697 | } | |
698 | ||
699 | ret_val = e1000_read_eeprom(hw, EEPROM_SERDES_AMPLITUDE, 1, | |
700 | &eeprom_data); | |
701 | if (ret_val) { | |
702 | return ret_val; | |
703 | } | |
704 | ||
705 | if (eeprom_data != EEPROM_RESERVED_WORD) { | |
706 | /* Adjust SERDES output amplitude only. */ | |
707 | eeprom_data &= EEPROM_SERDES_AMPLITUDE_MASK; | |
708 | ret_val = | |
709 | e1000_write_phy_reg(hw, M88E1000_PHY_EXT_CTRL, eeprom_data); | |
710 | if (ret_val) | |
711 | return ret_val; | |
712 | } | |
713 | ||
714 | return E1000_SUCCESS; | |
1da177e4 LT |
715 | } |
716 | ||
120a5d0d JB |
717 | /** |
718 | * e1000_setup_link - Configures flow control and link settings. | |
719 | * @hw: Struct containing variables accessed by shared code | |
1da177e4 | 720 | * |
120a5d0d | 721 | * Determines which flow control settings to use. Calls the appropriate media- |
1da177e4 LT |
722 | * specific link configuration function. Configures the flow control settings. |
723 | * Assuming the adapter has a valid link partner, a valid link should be | |
724 | * established. Assumes the hardware has previously been reset and the | |
725 | * transmitter and receiver are not enabled. | |
120a5d0d | 726 | */ |
64798845 | 727 | s32 e1000_setup_link(struct e1000_hw *hw) |
1da177e4 | 728 | { |
120a5d0d JB |
729 | u32 ctrl_ext; |
730 | s32 ret_val; | |
731 | u16 eeprom_data; | |
732 | ||
675ad473 | 733 | e_dbg("e1000_setup_link"); |
120a5d0d JB |
734 | |
735 | /* Read and store word 0x0F of the EEPROM. This word contains bits | |
736 | * that determine the hardware's default PAUSE (flow control) mode, | |
737 | * a bit that determines whether the HW defaults to enabling or | |
738 | * disabling auto-negotiation, and the direction of the | |
739 | * SW defined pins. If there is no SW over-ride of the flow | |
740 | * control setting, then the variable hw->fc will | |
741 | * be initialized based on a value in the EEPROM. | |
742 | */ | |
743 | if (hw->fc == E1000_FC_DEFAULT) { | |
744 | ret_val = e1000_read_eeprom(hw, EEPROM_INIT_CONTROL2_REG, | |
745 | 1, &eeprom_data); | |
746 | if (ret_val) { | |
675ad473 | 747 | e_dbg("EEPROM Read Error\n"); |
120a5d0d JB |
748 | return -E1000_ERR_EEPROM; |
749 | } | |
750 | if ((eeprom_data & EEPROM_WORD0F_PAUSE_MASK) == 0) | |
751 | hw->fc = E1000_FC_NONE; | |
752 | else if ((eeprom_data & EEPROM_WORD0F_PAUSE_MASK) == | |
753 | EEPROM_WORD0F_ASM_DIR) | |
754 | hw->fc = E1000_FC_TX_PAUSE; | |
755 | else | |
756 | hw->fc = E1000_FC_FULL; | |
757 | } | |
1da177e4 | 758 | |
120a5d0d JB |
759 | /* We want to save off the original Flow Control configuration just |
760 | * in case we get disconnected and then reconnected into a different | |
761 | * hub or switch with different Flow Control capabilities. | |
762 | */ | |
763 | if (hw->mac_type == e1000_82542_rev2_0) | |
764 | hw->fc &= (~E1000_FC_TX_PAUSE); | |
1da177e4 | 765 | |
120a5d0d JB |
766 | if ((hw->mac_type < e1000_82543) && (hw->report_tx_early == 1)) |
767 | hw->fc &= (~E1000_FC_RX_PAUSE); | |
1da177e4 | 768 | |
120a5d0d | 769 | hw->original_fc = hw->fc; |
1da177e4 | 770 | |
675ad473 | 771 | e_dbg("After fix-ups FlowControl is now = %x\n", hw->fc); |
1da177e4 | 772 | |
120a5d0d JB |
773 | /* Take the 4 bits from EEPROM word 0x0F that determine the initial |
774 | * polarity value for the SW controlled pins, and setup the | |
775 | * Extended Device Control reg with that info. | |
776 | * This is needed because one of the SW controlled pins is used for | |
777 | * signal detection. So this should be done before e1000_setup_pcs_link() | |
778 | * or e1000_phy_setup() is called. | |
779 | */ | |
780 | if (hw->mac_type == e1000_82543) { | |
781 | ret_val = e1000_read_eeprom(hw, EEPROM_INIT_CONTROL2_REG, | |
782 | 1, &eeprom_data); | |
783 | if (ret_val) { | |
675ad473 | 784 | e_dbg("EEPROM Read Error\n"); |
120a5d0d JB |
785 | return -E1000_ERR_EEPROM; |
786 | } | |
787 | ctrl_ext = ((eeprom_data & EEPROM_WORD0F_SWPDIO_EXT) << | |
788 | SWDPIO__EXT_SHIFT); | |
789 | ew32(CTRL_EXT, ctrl_ext); | |
790 | } | |
1da177e4 | 791 | |
120a5d0d JB |
792 | /* Call the necessary subroutine to configure the link. */ |
793 | ret_val = (hw->media_type == e1000_media_type_copper) ? | |
794 | e1000_setup_copper_link(hw) : e1000_setup_fiber_serdes_link(hw); | |
2d7edb92 | 795 | |
120a5d0d JB |
796 | /* Initialize the flow control address, type, and PAUSE timer |
797 | * registers to their default values. This is done even if flow | |
798 | * control is disabled, because it does not hurt anything to | |
799 | * initialize these registers. | |
800 | */ | |
675ad473 | 801 | e_dbg("Initializing the Flow Control address, type and timer regs\n"); |
2d7edb92 | 802 | |
120a5d0d JB |
803 | ew32(FCT, FLOW_CONTROL_TYPE); |
804 | ew32(FCAH, FLOW_CONTROL_ADDRESS_HIGH); | |
805 | ew32(FCAL, FLOW_CONTROL_ADDRESS_LOW); | |
2d7edb92 | 806 | |
120a5d0d | 807 | ew32(FCTTV, hw->fc_pause_time); |
1da177e4 | 808 | |
120a5d0d JB |
809 | /* Set the flow control receive threshold registers. Normally, |
810 | * these registers will be set to a default threshold that may be | |
811 | * adjusted later by the driver's runtime code. However, if the | |
812 | * ability to transmit pause frames in not enabled, then these | |
813 | * registers will be set to 0. | |
814 | */ | |
815 | if (!(hw->fc & E1000_FC_TX_PAUSE)) { | |
816 | ew32(FCRTL, 0); | |
817 | ew32(FCRTH, 0); | |
818 | } else { | |
6cfbd97b JK |
819 | /* We need to set up the Receive Threshold high and low water |
820 | * marks as well as (optionally) enabling the transmission of | |
821 | * XON frames. | |
120a5d0d JB |
822 | */ |
823 | if (hw->fc_send_xon) { | |
824 | ew32(FCRTL, (hw->fc_low_water | E1000_FCRTL_XONE)); | |
825 | ew32(FCRTH, hw->fc_high_water); | |
826 | } else { | |
827 | ew32(FCRTL, hw->fc_low_water); | |
828 | ew32(FCRTH, hw->fc_high_water); | |
829 | } | |
830 | } | |
831 | return ret_val; | |
1da177e4 LT |
832 | } |
833 | ||
120a5d0d JB |
834 | /** |
835 | * e1000_setup_fiber_serdes_link - prepare fiber or serdes link | |
836 | * @hw: Struct containing variables accessed by shared code | |
837 | * | |
838 | * Manipulates Physical Coding Sublayer functions in order to configure | |
839 | * link. Assumes the hardware has been previously reset and the transmitter | |
840 | * and receiver are not enabled. | |
841 | */ | |
842 | static s32 e1000_setup_fiber_serdes_link(struct e1000_hw *hw) | |
1da177e4 | 843 | { |
120a5d0d JB |
844 | u32 ctrl; |
845 | u32 status; | |
846 | u32 txcw = 0; | |
847 | u32 i; | |
848 | u32 signal = 0; | |
849 | s32 ret_val; | |
850 | ||
675ad473 | 851 | e_dbg("e1000_setup_fiber_serdes_link"); |
120a5d0d JB |
852 | |
853 | /* On adapters with a MAC newer than 82544, SWDP 1 will be | |
854 | * set when the optics detect a signal. On older adapters, it will be | |
855 | * cleared when there is a signal. This applies to fiber media only. | |
856 | * If we're on serdes media, adjust the output amplitude to value | |
857 | * set in the EEPROM. | |
858 | */ | |
859 | ctrl = er32(CTRL); | |
860 | if (hw->media_type == e1000_media_type_fiber) | |
861 | signal = (hw->mac_type > e1000_82544) ? E1000_CTRL_SWDPIN1 : 0; | |
862 | ||
863 | ret_val = e1000_adjust_serdes_amplitude(hw); | |
864 | if (ret_val) | |
865 | return ret_val; | |
866 | ||
867 | /* Take the link out of reset */ | |
868 | ctrl &= ~(E1000_CTRL_LRST); | |
869 | ||
870 | /* Adjust VCO speed to improve BER performance */ | |
871 | ret_val = e1000_set_vco_speed(hw); | |
872 | if (ret_val) | |
873 | return ret_val; | |
874 | ||
875 | e1000_config_collision_dist(hw); | |
876 | ||
877 | /* Check for a software override of the flow control settings, and setup | |
6cfbd97b JK |
878 | * the device accordingly. If auto-negotiation is enabled, then |
879 | * software will have to set the "PAUSE" bits to the correct value in | |
880 | * the Tranmsit Config Word Register (TXCW) and re-start | |
881 | * auto-negotiation. However, if auto-negotiation is disabled, then | |
882 | * software will have to manually configure the two flow control enable | |
883 | * bits in the CTRL register. | |
120a5d0d JB |
884 | * |
885 | * The possible values of the "fc" parameter are: | |
6cfbd97b JK |
886 | * 0: Flow control is completely disabled |
887 | * 1: Rx flow control is enabled (we can receive pause frames, but | |
888 | * not send pause frames). | |
889 | * 2: Tx flow control is enabled (we can send pause frames but we do | |
890 | * not support receiving pause frames). | |
891 | * 3: Both Rx and TX flow control (symmetric) are enabled. | |
120a5d0d JB |
892 | */ |
893 | switch (hw->fc) { | |
894 | case E1000_FC_NONE: | |
6cfbd97b | 895 | /* Flow ctrl is completely disabled by a software over-ride */ |
120a5d0d JB |
896 | txcw = (E1000_TXCW_ANE | E1000_TXCW_FD); |
897 | break; | |
898 | case E1000_FC_RX_PAUSE: | |
6cfbd97b JK |
899 | /* Rx Flow control is enabled and Tx Flow control is disabled by |
900 | * a software over-ride. Since there really isn't a way to | |
901 | * advertise that we are capable of Rx Pause ONLY, we will | |
902 | * advertise that we support both symmetric and asymmetric Rx | |
903 | * PAUSE. Later, we will disable the adapter's ability to send | |
904 | * PAUSE frames. | |
120a5d0d JB |
905 | */ |
906 | txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_PAUSE_MASK); | |
907 | break; | |
908 | case E1000_FC_TX_PAUSE: | |
6cfbd97b JK |
909 | /* Tx Flow control is enabled, and Rx Flow control is disabled, |
910 | * by a software over-ride. | |
120a5d0d JB |
911 | */ |
912 | txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_ASM_DIR); | |
913 | break; | |
914 | case E1000_FC_FULL: | |
6cfbd97b JK |
915 | /* Flow control (both Rx and Tx) is enabled by a software |
916 | * over-ride. | |
917 | */ | |
120a5d0d JB |
918 | txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_PAUSE_MASK); |
919 | break; | |
920 | default: | |
675ad473 | 921 | e_dbg("Flow control param set incorrectly\n"); |
120a5d0d JB |
922 | return -E1000_ERR_CONFIG; |
923 | break; | |
924 | } | |
1da177e4 | 925 | |
6cfbd97b JK |
926 | /* Since auto-negotiation is enabled, take the link out of reset (the |
927 | * link will be in reset, because we previously reset the chip). This | |
928 | * will restart auto-negotiation. If auto-negotiation is successful | |
929 | * then the link-up status bit will be set and the flow control enable | |
930 | * bits (RFCE and TFCE) will be set according to their negotiated value. | |
120a5d0d | 931 | */ |
675ad473 | 932 | e_dbg("Auto-negotiation enabled\n"); |
0fadb059 | 933 | |
120a5d0d JB |
934 | ew32(TXCW, txcw); |
935 | ew32(CTRL, ctrl); | |
936 | E1000_WRITE_FLUSH(); | |
1da177e4 | 937 | |
120a5d0d JB |
938 | hw->txcw = txcw; |
939 | msleep(1); | |
1da177e4 | 940 | |
6cfbd97b JK |
941 | /* If we have a signal (the cable is plugged in) then poll for a |
942 | * "Link-Up" indication in the Device Status Register. Time-out if a | |
943 | * link isn't seen in 500 milliseconds seconds (Auto-negotiation should | |
944 | * complete in less than 500 milliseconds even if the other end is doing | |
945 | * it in SW). For internal serdes, we just assume a signal is present, | |
946 | * then poll. | |
120a5d0d JB |
947 | */ |
948 | if (hw->media_type == e1000_media_type_internal_serdes || | |
949 | (er32(CTRL) & E1000_CTRL_SWDPIN1) == signal) { | |
675ad473 | 950 | e_dbg("Looking for Link\n"); |
120a5d0d JB |
951 | for (i = 0; i < (LINK_UP_TIMEOUT / 10); i++) { |
952 | msleep(10); | |
953 | status = er32(STATUS); | |
954 | if (status & E1000_STATUS_LU) | |
955 | break; | |
956 | } | |
957 | if (i == (LINK_UP_TIMEOUT / 10)) { | |
675ad473 | 958 | e_dbg("Never got a valid link from auto-neg!!!\n"); |
120a5d0d JB |
959 | hw->autoneg_failed = 1; |
960 | /* AutoNeg failed to achieve a link, so we'll call | |
6cfbd97b JK |
961 | * e1000_check_for_link. This routine will force the |
962 | * link up if we detect a signal. This will allow us to | |
963 | * communicate with non-autonegotiating link partners. | |
120a5d0d JB |
964 | */ |
965 | ret_val = e1000_check_for_link(hw); | |
966 | if (ret_val) { | |
675ad473 | 967 | e_dbg("Error while checking for link\n"); |
120a5d0d JB |
968 | return ret_val; |
969 | } | |
970 | hw->autoneg_failed = 0; | |
971 | } else { | |
972 | hw->autoneg_failed = 0; | |
675ad473 | 973 | e_dbg("Valid Link Found\n"); |
120a5d0d JB |
974 | } |
975 | } else { | |
675ad473 | 976 | e_dbg("No Signal Detected\n"); |
120a5d0d JB |
977 | } |
978 | return E1000_SUCCESS; | |
1da177e4 LT |
979 | } |
980 | ||
5377a416 DB |
981 | /** |
982 | * e1000_copper_link_rtl_setup - Copper link setup for e1000_phy_rtl series. | |
983 | * @hw: Struct containing variables accessed by shared code | |
984 | * | |
985 | * Commits changes to PHY configuration by calling e1000_phy_reset(). | |
986 | */ | |
987 | static s32 e1000_copper_link_rtl_setup(struct e1000_hw *hw) | |
988 | { | |
989 | s32 ret_val; | |
990 | ||
991 | /* SW reset the PHY so all changes take effect */ | |
992 | ret_val = e1000_phy_reset(hw); | |
993 | if (ret_val) { | |
994 | e_dbg("Error Resetting the PHY\n"); | |
995 | return ret_val; | |
996 | } | |
997 | ||
998 | return E1000_SUCCESS; | |
999 | } | |
1000 | ||
1001 | static s32 gbe_dhg_phy_setup(struct e1000_hw *hw) | |
1002 | { | |
1003 | s32 ret_val; | |
1004 | u32 ctrl_aux; | |
1005 | ||
1006 | switch (hw->phy_type) { | |
1007 | case e1000_phy_8211: | |
1008 | ret_val = e1000_copper_link_rtl_setup(hw); | |
1009 | if (ret_val) { | |
1010 | e_dbg("e1000_copper_link_rtl_setup failed!\n"); | |
1011 | return ret_val; | |
1012 | } | |
1013 | break; | |
1014 | case e1000_phy_8201: | |
1015 | /* Set RMII mode */ | |
1016 | ctrl_aux = er32(CTL_AUX); | |
1017 | ctrl_aux |= E1000_CTL_AUX_RMII; | |
1018 | ew32(CTL_AUX, ctrl_aux); | |
1019 | E1000_WRITE_FLUSH(); | |
1020 | ||
1021 | /* Disable the J/K bits required for receive */ | |
1022 | ctrl_aux = er32(CTL_AUX); | |
1023 | ctrl_aux |= 0x4; | |
1024 | ctrl_aux &= ~0x2; | |
1025 | ew32(CTL_AUX, ctrl_aux); | |
1026 | E1000_WRITE_FLUSH(); | |
1027 | ret_val = e1000_copper_link_rtl_setup(hw); | |
1028 | ||
1029 | if (ret_val) { | |
1030 | e_dbg("e1000_copper_link_rtl_setup failed!\n"); | |
1031 | return ret_val; | |
1032 | } | |
1033 | break; | |
1034 | default: | |
1035 | e_dbg("Error Resetting the PHY\n"); | |
1036 | return E1000_ERR_PHY_TYPE; | |
1037 | } | |
1038 | ||
1039 | return E1000_SUCCESS; | |
1040 | } | |
1041 | ||
120a5d0d JB |
1042 | /** |
1043 | * e1000_copper_link_preconfig - early configuration for copper | |
1044 | * @hw: Struct containing variables accessed by shared code | |
1045 | * | |
1046 | * Make sure we have a valid PHY and change PHY mode before link setup. | |
1047 | */ | |
1048 | static s32 e1000_copper_link_preconfig(struct e1000_hw *hw) | |
1da177e4 | 1049 | { |
120a5d0d JB |
1050 | u32 ctrl; |
1051 | s32 ret_val; | |
1052 | u16 phy_data; | |
1053 | ||
675ad473 | 1054 | e_dbg("e1000_copper_link_preconfig"); |
120a5d0d JB |
1055 | |
1056 | ctrl = er32(CTRL); | |
6cfbd97b JK |
1057 | /* With 82543, we need to force speed and duplex on the MAC equal to |
1058 | * what the PHY speed and duplex configuration is. In addition, we need | |
1059 | * to perform a hardware reset on the PHY to take it out of reset. | |
120a5d0d JB |
1060 | */ |
1061 | if (hw->mac_type > e1000_82543) { | |
1062 | ctrl |= E1000_CTRL_SLU; | |
1063 | ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX); | |
1064 | ew32(CTRL, ctrl); | |
1065 | } else { | |
1066 | ctrl |= | |
1067 | (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX | E1000_CTRL_SLU); | |
1068 | ew32(CTRL, ctrl); | |
1069 | ret_val = e1000_phy_hw_reset(hw); | |
1070 | if (ret_val) | |
1071 | return ret_val; | |
1072 | } | |
1073 | ||
1074 | /* Make sure we have a valid PHY */ | |
1075 | ret_val = e1000_detect_gig_phy(hw); | |
1076 | if (ret_val) { | |
675ad473 | 1077 | e_dbg("Error, did not detect valid phy.\n"); |
120a5d0d JB |
1078 | return ret_val; |
1079 | } | |
675ad473 | 1080 | e_dbg("Phy ID = %x\n", hw->phy_id); |
120a5d0d JB |
1081 | |
1082 | /* Set PHY to class A mode (if necessary) */ | |
1083 | ret_val = e1000_set_phy_mode(hw); | |
1084 | if (ret_val) | |
1085 | return ret_val; | |
1086 | ||
1087 | if ((hw->mac_type == e1000_82545_rev_3) || | |
1088 | (hw->mac_type == e1000_82546_rev_3)) { | |
1089 | ret_val = | |
1090 | e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data); | |
1091 | phy_data |= 0x00000008; | |
1092 | ret_val = | |
1093 | e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data); | |
1094 | } | |
1095 | ||
1096 | if (hw->mac_type <= e1000_82543 || | |
1097 | hw->mac_type == e1000_82541 || hw->mac_type == e1000_82547 || | |
1098 | hw->mac_type == e1000_82541_rev_2 | |
1099 | || hw->mac_type == e1000_82547_rev_2) | |
1100 | hw->phy_reset_disable = false; | |
1101 | ||
1102 | return E1000_SUCCESS; | |
1da177e4 LT |
1103 | } |
1104 | ||
120a5d0d JB |
1105 | /** |
1106 | * e1000_copper_link_igp_setup - Copper link setup for e1000_phy_igp series. | |
1107 | * @hw: Struct containing variables accessed by shared code | |
1108 | */ | |
1109 | static s32 e1000_copper_link_igp_setup(struct e1000_hw *hw) | |
1110 | { | |
1111 | u32 led_ctrl; | |
1112 | s32 ret_val; | |
1113 | u16 phy_data; | |
1114 | ||
675ad473 | 1115 | e_dbg("e1000_copper_link_igp_setup"); |
120a5d0d JB |
1116 | |
1117 | if (hw->phy_reset_disable) | |
1118 | return E1000_SUCCESS; | |
1119 | ||
1120 | ret_val = e1000_phy_reset(hw); | |
1121 | if (ret_val) { | |
675ad473 | 1122 | e_dbg("Error Resetting the PHY\n"); |
120a5d0d JB |
1123 | return ret_val; |
1124 | } | |
1125 | ||
1126 | /* Wait 15ms for MAC to configure PHY from eeprom settings */ | |
1127 | msleep(15); | |
1128 | /* Configure activity LED after PHY reset */ | |
1129 | led_ctrl = er32(LEDCTL); | |
1130 | led_ctrl &= IGP_ACTIVITY_LED_MASK; | |
1131 | led_ctrl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE); | |
1132 | ew32(LEDCTL, led_ctrl); | |
1133 | ||
1134 | /* The NVM settings will configure LPLU in D3 for IGP2 and IGP3 PHYs */ | |
1135 | if (hw->phy_type == e1000_phy_igp) { | |
1136 | /* disable lplu d3 during driver init */ | |
1137 | ret_val = e1000_set_d3_lplu_state(hw, false); | |
1138 | if (ret_val) { | |
675ad473 | 1139 | e_dbg("Error Disabling LPLU D3\n"); |
120a5d0d JB |
1140 | return ret_val; |
1141 | } | |
1142 | } | |
1143 | ||
1144 | /* Configure mdi-mdix settings */ | |
1145 | ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, &phy_data); | |
1146 | if (ret_val) | |
1147 | return ret_val; | |
1148 | ||
1149 | if ((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_82547)) { | |
1150 | hw->dsp_config_state = e1000_dsp_config_disabled; | |
1151 | /* Force MDI for earlier revs of the IGP PHY */ | |
1152 | phy_data &= | |
1153 | ~(IGP01E1000_PSCR_AUTO_MDIX | | |
1154 | IGP01E1000_PSCR_FORCE_MDI_MDIX); | |
1155 | hw->mdix = 1; | |
1156 | ||
1157 | } else { | |
1158 | hw->dsp_config_state = e1000_dsp_config_enabled; | |
1159 | phy_data &= ~IGP01E1000_PSCR_AUTO_MDIX; | |
1160 | ||
1161 | switch (hw->mdix) { | |
1162 | case 1: | |
1163 | phy_data &= ~IGP01E1000_PSCR_FORCE_MDI_MDIX; | |
1164 | break; | |
1165 | case 2: | |
1166 | phy_data |= IGP01E1000_PSCR_FORCE_MDI_MDIX; | |
1167 | break; | |
1168 | case 0: | |
1169 | default: | |
1170 | phy_data |= IGP01E1000_PSCR_AUTO_MDIX; | |
1171 | break; | |
1172 | } | |
1173 | } | |
1174 | ret_val = e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, phy_data); | |
1175 | if (ret_val) | |
1176 | return ret_val; | |
1177 | ||
1178 | /* set auto-master slave resolution settings */ | |
1179 | if (hw->autoneg) { | |
1180 | e1000_ms_type phy_ms_setting = hw->master_slave; | |
1181 | ||
1182 | if (hw->ffe_config_state == e1000_ffe_config_active) | |
1183 | hw->ffe_config_state = e1000_ffe_config_enabled; | |
1184 | ||
1185 | if (hw->dsp_config_state == e1000_dsp_config_activated) | |
1186 | hw->dsp_config_state = e1000_dsp_config_enabled; | |
1187 | ||
1188 | /* when autonegotiation advertisement is only 1000Mbps then we | |
1189 | * should disable SmartSpeed and enable Auto MasterSlave | |
6cfbd97b JK |
1190 | * resolution as hardware default. |
1191 | */ | |
120a5d0d JB |
1192 | if (hw->autoneg_advertised == ADVERTISE_1000_FULL) { |
1193 | /* Disable SmartSpeed */ | |
1194 | ret_val = | |
1195 | e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, | |
1196 | &phy_data); | |
1197 | if (ret_val) | |
1198 | return ret_val; | |
1199 | phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED; | |
1200 | ret_val = | |
1201 | e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, | |
1202 | phy_data); | |
1203 | if (ret_val) | |
1204 | return ret_val; | |
1205 | /* Set auto Master/Slave resolution process */ | |
1206 | ret_val = | |
1207 | e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_data); | |
1208 | if (ret_val) | |
1209 | return ret_val; | |
1210 | phy_data &= ~CR_1000T_MS_ENABLE; | |
1211 | ret_val = | |
1212 | e1000_write_phy_reg(hw, PHY_1000T_CTRL, phy_data); | |
1213 | if (ret_val) | |
1214 | return ret_val; | |
1215 | } | |
1216 | ||
1217 | ret_val = e1000_read_phy_reg(hw, PHY_1000T_CTRL, &phy_data); | |
1218 | if (ret_val) | |
1219 | return ret_val; | |
1220 | ||
1221 | /* load defaults for future use */ | |
1222 | hw->original_master_slave = (phy_data & CR_1000T_MS_ENABLE) ? | |
1223 | ((phy_data & CR_1000T_MS_VALUE) ? | |
1224 | e1000_ms_force_master : | |
1225 | e1000_ms_force_slave) : e1000_ms_auto; | |
1226 | ||
1227 | switch (phy_ms_setting) { | |
1228 | case e1000_ms_force_master: | |
1229 | phy_data |= (CR_1000T_MS_ENABLE | CR_1000T_MS_VALUE); | |
1230 | break; | |
1231 | case e1000_ms_force_slave: | |
1232 | phy_data |= CR_1000T_MS_ENABLE; | |
1233 | phy_data &= ~(CR_1000T_MS_VALUE); | |
1234 | break; | |
1235 | case e1000_ms_auto: | |
1236 | phy_data &= ~CR_1000T_MS_ENABLE; | |
1237 | default: | |
1238 | break; | |
1239 | } | |
1240 | ret_val = e1000_write_phy_reg(hw, PHY_1000T_CTRL, phy_data); | |
1241 | if (ret_val) | |
1242 | return ret_val; | |
1243 | } | |
1244 | ||
1245 | return E1000_SUCCESS; | |
1246 | } | |
1247 | ||
1248 | /** | |
1249 | * e1000_copper_link_mgp_setup - Copper link setup for e1000_phy_m88 series. | |
1250 | * @hw: Struct containing variables accessed by shared code | |
1251 | */ | |
1252 | static s32 e1000_copper_link_mgp_setup(struct e1000_hw *hw) | |
1253 | { | |
1254 | s32 ret_val; | |
1255 | u16 phy_data; | |
1256 | ||
675ad473 | 1257 | e_dbg("e1000_copper_link_mgp_setup"); |
120a5d0d JB |
1258 | |
1259 | if (hw->phy_reset_disable) | |
1260 | return E1000_SUCCESS; | |
1261 | ||
1262 | /* Enable CRS on TX. This must be set for half-duplex operation. */ | |
1263 | ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data); | |
1264 | if (ret_val) | |
1265 | return ret_val; | |
1266 | ||
1267 | phy_data |= M88E1000_PSCR_ASSERT_CRS_ON_TX; | |
1268 | ||
1269 | /* Options: | |
1270 | * MDI/MDI-X = 0 (default) | |
1271 | * 0 - Auto for all speeds | |
1272 | * 1 - MDI mode | |
1273 | * 2 - MDI-X mode | |
1274 | * 3 - Auto for 1000Base-T only (MDI-X for 10/100Base-T modes) | |
1275 | */ | |
1276 | phy_data &= ~M88E1000_PSCR_AUTO_X_MODE; | |
1277 | ||
1278 | switch (hw->mdix) { | |
1279 | case 1: | |
1280 | phy_data |= M88E1000_PSCR_MDI_MANUAL_MODE; | |
1281 | break; | |
1282 | case 2: | |
1283 | phy_data |= M88E1000_PSCR_MDIX_MANUAL_MODE; | |
1284 | break; | |
1285 | case 3: | |
1286 | phy_data |= M88E1000_PSCR_AUTO_X_1000T; | |
1287 | break; | |
1288 | case 0: | |
1289 | default: | |
1290 | phy_data |= M88E1000_PSCR_AUTO_X_MODE; | |
1291 | break; | |
1292 | } | |
1293 | ||
1294 | /* Options: | |
1295 | * disable_polarity_correction = 0 (default) | |
1296 | * Automatic Correction for Reversed Cable Polarity | |
1297 | * 0 - Disabled | |
1298 | * 1 - Enabled | |
1299 | */ | |
1300 | phy_data &= ~M88E1000_PSCR_POLARITY_REVERSAL; | |
1301 | if (hw->disable_polarity_correction == 1) | |
1302 | phy_data |= M88E1000_PSCR_POLARITY_REVERSAL; | |
1303 | ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data); | |
1304 | if (ret_val) | |
1305 | return ret_val; | |
1306 | ||
1307 | if (hw->phy_revision < M88E1011_I_REV_4) { | |
1308 | /* Force TX_CLK in the Extended PHY Specific Control Register | |
1309 | * to 25MHz clock. | |
1310 | */ | |
1311 | ret_val = | |
1312 | e1000_read_phy_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL, | |
1313 | &phy_data); | |
1314 | if (ret_val) | |
1315 | return ret_val; | |
1316 | ||
1317 | phy_data |= M88E1000_EPSCR_TX_CLK_25; | |
1318 | ||
1319 | if ((hw->phy_revision == E1000_REVISION_2) && | |
1320 | (hw->phy_id == M88E1111_I_PHY_ID)) { | |
1321 | /* Vidalia Phy, set the downshift counter to 5x */ | |
1322 | phy_data &= ~(M88EC018_EPSCR_DOWNSHIFT_COUNTER_MASK); | |
1323 | phy_data |= M88EC018_EPSCR_DOWNSHIFT_COUNTER_5X; | |
1324 | ret_val = e1000_write_phy_reg(hw, | |
1325 | M88E1000_EXT_PHY_SPEC_CTRL, | |
1326 | phy_data); | |
1327 | if (ret_val) | |
1328 | return ret_val; | |
1329 | } else { | |
1330 | /* Configure Master and Slave downshift values */ | |
1331 | phy_data &= ~(M88E1000_EPSCR_MASTER_DOWNSHIFT_MASK | | |
1332 | M88E1000_EPSCR_SLAVE_DOWNSHIFT_MASK); | |
1333 | phy_data |= (M88E1000_EPSCR_MASTER_DOWNSHIFT_1X | | |
1334 | M88E1000_EPSCR_SLAVE_DOWNSHIFT_1X); | |
1335 | ret_val = e1000_write_phy_reg(hw, | |
1336 | M88E1000_EXT_PHY_SPEC_CTRL, | |
1337 | phy_data); | |
1338 | if (ret_val) | |
1339 | return ret_val; | |
1340 | } | |
1341 | } | |
1342 | ||
1343 | /* SW Reset the PHY so all changes take effect */ | |
1344 | ret_val = e1000_phy_reset(hw); | |
1345 | if (ret_val) { | |
675ad473 | 1346 | e_dbg("Error Resetting the PHY\n"); |
120a5d0d JB |
1347 | return ret_val; |
1348 | } | |
1349 | ||
1350 | return E1000_SUCCESS; | |
1351 | } | |
1352 | ||
1353 | /** | |
1354 | * e1000_copper_link_autoneg - setup auto-neg | |
1355 | * @hw: Struct containing variables accessed by shared code | |
1da177e4 | 1356 | * |
120a5d0d JB |
1357 | * Setup auto-negotiation and flow control advertisements, |
1358 | * and then perform auto-negotiation. | |
1359 | */ | |
1360 | static s32 e1000_copper_link_autoneg(struct e1000_hw *hw) | |
1361 | { | |
1362 | s32 ret_val; | |
1363 | u16 phy_data; | |
1364 | ||
675ad473 | 1365 | e_dbg("e1000_copper_link_autoneg"); |
120a5d0d JB |
1366 | |
1367 | /* Perform some bounds checking on the hw->autoneg_advertised | |
1368 | * parameter. If this variable is zero, then set it to the default. | |
1369 | */ | |
1370 | hw->autoneg_advertised &= AUTONEG_ADVERTISE_SPEED_DEFAULT; | |
1371 | ||
1372 | /* If autoneg_advertised is zero, we assume it was not defaulted | |
1373 | * by the calling code so we set to advertise full capability. | |
1374 | */ | |
1375 | if (hw->autoneg_advertised == 0) | |
1376 | hw->autoneg_advertised = AUTONEG_ADVERTISE_SPEED_DEFAULT; | |
1377 | ||
5377a416 DB |
1378 | /* IFE/RTL8201N PHY only supports 10/100 */ |
1379 | if (hw->phy_type == e1000_phy_8201) | |
1380 | hw->autoneg_advertised &= AUTONEG_ADVERTISE_10_100_ALL; | |
1381 | ||
675ad473 | 1382 | e_dbg("Reconfiguring auto-neg advertisement params\n"); |
120a5d0d JB |
1383 | ret_val = e1000_phy_setup_autoneg(hw); |
1384 | if (ret_val) { | |
675ad473 | 1385 | e_dbg("Error Setting up Auto-Negotiation\n"); |
120a5d0d JB |
1386 | return ret_val; |
1387 | } | |
675ad473 | 1388 | e_dbg("Restarting Auto-Neg\n"); |
120a5d0d JB |
1389 | |
1390 | /* Restart auto-negotiation by setting the Auto Neg Enable bit and | |
1391 | * the Auto Neg Restart bit in the PHY control register. | |
1392 | */ | |
1393 | ret_val = e1000_read_phy_reg(hw, PHY_CTRL, &phy_data); | |
1394 | if (ret_val) | |
1395 | return ret_val; | |
1396 | ||
1397 | phy_data |= (MII_CR_AUTO_NEG_EN | MII_CR_RESTART_AUTO_NEG); | |
1398 | ret_val = e1000_write_phy_reg(hw, PHY_CTRL, phy_data); | |
1399 | if (ret_val) | |
1400 | return ret_val; | |
1401 | ||
1402 | /* Does the user want to wait for Auto-Neg to complete here, or | |
1403 | * check at a later time (for example, callback routine). | |
1404 | */ | |
1405 | if (hw->wait_autoneg_complete) { | |
1406 | ret_val = e1000_wait_autoneg(hw); | |
1407 | if (ret_val) { | |
675ad473 | 1408 | e_dbg |
120a5d0d JB |
1409 | ("Error while waiting for autoneg to complete\n"); |
1410 | return ret_val; | |
1411 | } | |
1412 | } | |
1413 | ||
1414 | hw->get_link_status = true; | |
1415 | ||
1416 | return E1000_SUCCESS; | |
1417 | } | |
1418 | ||
1419 | /** | |
1420 | * e1000_copper_link_postconfig - post link setup | |
1421 | * @hw: Struct containing variables accessed by shared code | |
1da177e4 | 1422 | * |
120a5d0d JB |
1423 | * Config the MAC and the PHY after link is up. |
1424 | * 1) Set up the MAC to the current PHY speed/duplex | |
1425 | * if we are on 82543. If we | |
1426 | * are on newer silicon, we only need to configure | |
1427 | * collision distance in the Transmit Control Register. | |
1428 | * 2) Set up flow control on the MAC to that established with | |
1429 | * the link partner. | |
1430 | * 3) Config DSP to improve Gigabit link quality for some PHY revisions. | |
1431 | */ | |
1432 | static s32 e1000_copper_link_postconfig(struct e1000_hw *hw) | |
1433 | { | |
1434 | s32 ret_val; | |
675ad473 | 1435 | e_dbg("e1000_copper_link_postconfig"); |
120a5d0d | 1436 | |
5377a416 | 1437 | if ((hw->mac_type >= e1000_82544) && (hw->mac_type != e1000_ce4100)) { |
120a5d0d JB |
1438 | e1000_config_collision_dist(hw); |
1439 | } else { | |
1440 | ret_val = e1000_config_mac_to_phy(hw); | |
1441 | if (ret_val) { | |
675ad473 | 1442 | e_dbg("Error configuring MAC to PHY settings\n"); |
120a5d0d JB |
1443 | return ret_val; |
1444 | } | |
1445 | } | |
1446 | ret_val = e1000_config_fc_after_link_up(hw); | |
1447 | if (ret_val) { | |
675ad473 | 1448 | e_dbg("Error Configuring Flow Control\n"); |
120a5d0d JB |
1449 | return ret_val; |
1450 | } | |
1451 | ||
1452 | /* Config DSP to improve Giga link quality */ | |
1453 | if (hw->phy_type == e1000_phy_igp) { | |
1454 | ret_val = e1000_config_dsp_after_link_change(hw, true); | |
1455 | if (ret_val) { | |
675ad473 | 1456 | e_dbg("Error Configuring DSP after link up\n"); |
120a5d0d JB |
1457 | return ret_val; |
1458 | } | |
1459 | } | |
1460 | ||
1461 | return E1000_SUCCESS; | |
1462 | } | |
1463 | ||
1464 | /** | |
1465 | * e1000_setup_copper_link - phy/speed/duplex setting | |
1466 | * @hw: Struct containing variables accessed by shared code | |
1467 | * | |
1468 | * Detects which PHY is present and sets up the speed and duplex | |
1469 | */ | |
1470 | static s32 e1000_setup_copper_link(struct e1000_hw *hw) | |
1471 | { | |
1472 | s32 ret_val; | |
1473 | u16 i; | |
1474 | u16 phy_data; | |
1475 | ||
675ad473 | 1476 | e_dbg("e1000_setup_copper_link"); |
120a5d0d JB |
1477 | |
1478 | /* Check if it is a valid PHY and set PHY mode if necessary. */ | |
1479 | ret_val = e1000_copper_link_preconfig(hw); | |
1480 | if (ret_val) | |
1481 | return ret_val; | |
1482 | ||
1483 | if (hw->phy_type == e1000_phy_igp) { | |
1484 | ret_val = e1000_copper_link_igp_setup(hw); | |
1485 | if (ret_val) | |
1486 | return ret_val; | |
1487 | } else if (hw->phy_type == e1000_phy_m88) { | |
1488 | ret_val = e1000_copper_link_mgp_setup(hw); | |
1489 | if (ret_val) | |
1490 | return ret_val; | |
5377a416 DB |
1491 | } else { |
1492 | ret_val = gbe_dhg_phy_setup(hw); | |
1493 | if (ret_val) { | |
1494 | e_dbg("gbe_dhg_phy_setup failed!\n"); | |
1495 | return ret_val; | |
1496 | } | |
120a5d0d JB |
1497 | } |
1498 | ||
1499 | if (hw->autoneg) { | |
1500 | /* Setup autoneg and flow control advertisement | |
6cfbd97b JK |
1501 | * and perform autonegotiation |
1502 | */ | |
120a5d0d JB |
1503 | ret_val = e1000_copper_link_autoneg(hw); |
1504 | if (ret_val) | |
1505 | return ret_val; | |
1506 | } else { | |
1507 | /* PHY will be set to 10H, 10F, 100H,or 100F | |
6cfbd97b JK |
1508 | * depending on value from forced_speed_duplex. |
1509 | */ | |
675ad473 | 1510 | e_dbg("Forcing speed and duplex\n"); |
120a5d0d JB |
1511 | ret_val = e1000_phy_force_speed_duplex(hw); |
1512 | if (ret_val) { | |
675ad473 | 1513 | e_dbg("Error Forcing Speed and Duplex\n"); |
120a5d0d JB |
1514 | return ret_val; |
1515 | } | |
1516 | } | |
1517 | ||
1518 | /* Check link status. Wait up to 100 microseconds for link to become | |
1519 | * valid. | |
1520 | */ | |
1521 | for (i = 0; i < 10; i++) { | |
1522 | ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data); | |
1523 | if (ret_val) | |
1524 | return ret_val; | |
1525 | ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data); | |
1526 | if (ret_val) | |
1527 | return ret_val; | |
1528 | ||
1529 | if (phy_data & MII_SR_LINK_STATUS) { | |
1530 | /* Config the MAC and PHY after link is up */ | |
1531 | ret_val = e1000_copper_link_postconfig(hw); | |
1532 | if (ret_val) | |
1533 | return ret_val; | |
1534 | ||
675ad473 | 1535 | e_dbg("Valid link established!!!\n"); |
120a5d0d JB |
1536 | return E1000_SUCCESS; |
1537 | } | |
1538 | udelay(10); | |
1539 | } | |
1540 | ||
675ad473 | 1541 | e_dbg("Unable to establish link!!!\n"); |
120a5d0d JB |
1542 | return E1000_SUCCESS; |
1543 | } | |
1544 | ||
1545 | /** | |
1546 | * e1000_phy_setup_autoneg - phy settings | |
1547 | * @hw: Struct containing variables accessed by shared code | |
1548 | * | |
1549 | * Configures PHY autoneg and flow control advertisement settings | |
1550 | */ | |
1551 | s32 e1000_phy_setup_autoneg(struct e1000_hw *hw) | |
1552 | { | |
1553 | s32 ret_val; | |
1554 | u16 mii_autoneg_adv_reg; | |
1555 | u16 mii_1000t_ctrl_reg; | |
1556 | ||
675ad473 | 1557 | e_dbg("e1000_phy_setup_autoneg"); |
120a5d0d JB |
1558 | |
1559 | /* Read the MII Auto-Neg Advertisement Register (Address 4). */ | |
1560 | ret_val = e1000_read_phy_reg(hw, PHY_AUTONEG_ADV, &mii_autoneg_adv_reg); | |
1561 | if (ret_val) | |
1562 | return ret_val; | |
1563 | ||
1564 | /* Read the MII 1000Base-T Control Register (Address 9). */ | |
5377a416 | 1565 | ret_val = e1000_read_phy_reg(hw, PHY_1000T_CTRL, &mii_1000t_ctrl_reg); |
120a5d0d JB |
1566 | if (ret_val) |
1567 | return ret_val; | |
5377a416 DB |
1568 | else if (hw->phy_type == e1000_phy_8201) |
1569 | mii_1000t_ctrl_reg &= ~REG9_SPEED_MASK; | |
120a5d0d JB |
1570 | |
1571 | /* Need to parse both autoneg_advertised and fc and set up | |
1572 | * the appropriate PHY registers. First we will parse for | |
1573 | * autoneg_advertised software override. Since we can advertise | |
1574 | * a plethora of combinations, we need to check each bit | |
1575 | * individually. | |
1576 | */ | |
1577 | ||
1578 | /* First we clear all the 10/100 mb speed bits in the Auto-Neg | |
1579 | * Advertisement Register (Address 4) and the 1000 mb speed bits in | |
1580 | * the 1000Base-T Control Register (Address 9). | |
1581 | */ | |
1582 | mii_autoneg_adv_reg &= ~REG4_SPEED_MASK; | |
1583 | mii_1000t_ctrl_reg &= ~REG9_SPEED_MASK; | |
1584 | ||
675ad473 | 1585 | e_dbg("autoneg_advertised %x\n", hw->autoneg_advertised); |
120a5d0d JB |
1586 | |
1587 | /* Do we want to advertise 10 Mb Half Duplex? */ | |
1588 | if (hw->autoneg_advertised & ADVERTISE_10_HALF) { | |
675ad473 | 1589 | e_dbg("Advertise 10mb Half duplex\n"); |
120a5d0d JB |
1590 | mii_autoneg_adv_reg |= NWAY_AR_10T_HD_CAPS; |
1591 | } | |
1592 | ||
1593 | /* Do we want to advertise 10 Mb Full Duplex? */ | |
1594 | if (hw->autoneg_advertised & ADVERTISE_10_FULL) { | |
675ad473 | 1595 | e_dbg("Advertise 10mb Full duplex\n"); |
120a5d0d JB |
1596 | mii_autoneg_adv_reg |= NWAY_AR_10T_FD_CAPS; |
1597 | } | |
1598 | ||
1599 | /* Do we want to advertise 100 Mb Half Duplex? */ | |
1600 | if (hw->autoneg_advertised & ADVERTISE_100_HALF) { | |
675ad473 | 1601 | e_dbg("Advertise 100mb Half duplex\n"); |
120a5d0d JB |
1602 | mii_autoneg_adv_reg |= NWAY_AR_100TX_HD_CAPS; |
1603 | } | |
1604 | ||
1605 | /* Do we want to advertise 100 Mb Full Duplex? */ | |
1606 | if (hw->autoneg_advertised & ADVERTISE_100_FULL) { | |
675ad473 | 1607 | e_dbg("Advertise 100mb Full duplex\n"); |
120a5d0d JB |
1608 | mii_autoneg_adv_reg |= NWAY_AR_100TX_FD_CAPS; |
1609 | } | |
1610 | ||
1611 | /* We do not allow the Phy to advertise 1000 Mb Half Duplex */ | |
1612 | if (hw->autoneg_advertised & ADVERTISE_1000_HALF) { | |
675ad473 | 1613 | e_dbg |
120a5d0d JB |
1614 | ("Advertise 1000mb Half duplex requested, request denied!\n"); |
1615 | } | |
1616 | ||
1617 | /* Do we want to advertise 1000 Mb Full Duplex? */ | |
1618 | if (hw->autoneg_advertised & ADVERTISE_1000_FULL) { | |
675ad473 | 1619 | e_dbg("Advertise 1000mb Full duplex\n"); |
120a5d0d JB |
1620 | mii_1000t_ctrl_reg |= CR_1000T_FD_CAPS; |
1621 | } | |
1622 | ||
1623 | /* Check for a software override of the flow control settings, and | |
1624 | * setup the PHY advertisement registers accordingly. If | |
1625 | * auto-negotiation is enabled, then software will have to set the | |
1626 | * "PAUSE" bits to the correct value in the Auto-Negotiation | |
6cfbd97b JK |
1627 | * Advertisement Register (PHY_AUTONEG_ADV) and re-start |
1628 | * auto-negotiation. | |
120a5d0d JB |
1629 | * |
1630 | * The possible values of the "fc" parameter are: | |
1631 | * 0: Flow control is completely disabled | |
1632 | * 1: Rx flow control is enabled (we can receive pause frames | |
1633 | * but not send pause frames). | |
1634 | * 2: Tx flow control is enabled (we can send pause frames | |
1635 | * but we do not support receiving pause frames). | |
1636 | * 3: Both Rx and TX flow control (symmetric) are enabled. | |
1637 | * other: No software override. The flow control configuration | |
1638 | * in the EEPROM is used. | |
1639 | */ | |
1640 | switch (hw->fc) { | |
1641 | case E1000_FC_NONE: /* 0 */ | |
1642 | /* Flow control (RX & TX) is completely disabled by a | |
1643 | * software over-ride. | |
1644 | */ | |
1645 | mii_autoneg_adv_reg &= ~(NWAY_AR_ASM_DIR | NWAY_AR_PAUSE); | |
1646 | break; | |
1647 | case E1000_FC_RX_PAUSE: /* 1 */ | |
1648 | /* RX Flow control is enabled, and TX Flow control is | |
1649 | * disabled, by a software over-ride. | |
1650 | */ | |
1651 | /* Since there really isn't a way to advertise that we are | |
1652 | * capable of RX Pause ONLY, we will advertise that we | |
1653 | * support both symmetric and asymmetric RX PAUSE. Later | |
1654 | * (in e1000_config_fc_after_link_up) we will disable the | |
6cfbd97b | 1655 | * hw's ability to send PAUSE frames. |
120a5d0d JB |
1656 | */ |
1657 | mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE); | |
1658 | break; | |
1659 | case E1000_FC_TX_PAUSE: /* 2 */ | |
1660 | /* TX Flow control is enabled, and RX Flow control is | |
1661 | * disabled, by a software over-ride. | |
1662 | */ | |
1663 | mii_autoneg_adv_reg |= NWAY_AR_ASM_DIR; | |
1664 | mii_autoneg_adv_reg &= ~NWAY_AR_PAUSE; | |
1665 | break; | |
1666 | case E1000_FC_FULL: /* 3 */ | |
1667 | /* Flow control (both RX and TX) is enabled by a software | |
1668 | * over-ride. | |
1669 | */ | |
1670 | mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE); | |
1671 | break; | |
1672 | default: | |
675ad473 | 1673 | e_dbg("Flow control param set incorrectly\n"); |
120a5d0d JB |
1674 | return -E1000_ERR_CONFIG; |
1675 | } | |
1676 | ||
1677 | ret_val = e1000_write_phy_reg(hw, PHY_AUTONEG_ADV, mii_autoneg_adv_reg); | |
1678 | if (ret_val) | |
1679 | return ret_val; | |
1680 | ||
675ad473 | 1681 | e_dbg("Auto-Neg Advertising %x\n", mii_autoneg_adv_reg); |
120a5d0d | 1682 | |
5377a416 DB |
1683 | if (hw->phy_type == e1000_phy_8201) { |
1684 | mii_1000t_ctrl_reg = 0; | |
1685 | } else { | |
1686 | ret_val = e1000_write_phy_reg(hw, PHY_1000T_CTRL, | |
1687 | mii_1000t_ctrl_reg); | |
1688 | if (ret_val) | |
1689 | return ret_val; | |
1690 | } | |
120a5d0d JB |
1691 | |
1692 | return E1000_SUCCESS; | |
1693 | } | |
1694 | ||
1695 | /** | |
1696 | * e1000_phy_force_speed_duplex - force link settings | |
1697 | * @hw: Struct containing variables accessed by shared code | |
1698 | * | |
1699 | * Force PHY speed and duplex settings to hw->forced_speed_duplex | |
1700 | */ | |
1701 | static s32 e1000_phy_force_speed_duplex(struct e1000_hw *hw) | |
1702 | { | |
1703 | u32 ctrl; | |
1704 | s32 ret_val; | |
1705 | u16 mii_ctrl_reg; | |
1706 | u16 mii_status_reg; | |
1707 | u16 phy_data; | |
1708 | u16 i; | |
1709 | ||
675ad473 | 1710 | e_dbg("e1000_phy_force_speed_duplex"); |
120a5d0d JB |
1711 | |
1712 | /* Turn off Flow control if we are forcing speed and duplex. */ | |
1713 | hw->fc = E1000_FC_NONE; | |
1714 | ||
675ad473 | 1715 | e_dbg("hw->fc = %d\n", hw->fc); |
120a5d0d JB |
1716 | |
1717 | /* Read the Device Control Register. */ | |
1718 | ctrl = er32(CTRL); | |
1719 | ||
1720 | /* Set the bits to Force Speed and Duplex in the Device Ctrl Reg. */ | |
1721 | ctrl |= (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX); | |
1722 | ctrl &= ~(DEVICE_SPEED_MASK); | |
1723 | ||
1724 | /* Clear the Auto Speed Detect Enable bit. */ | |
1725 | ctrl &= ~E1000_CTRL_ASDE; | |
1726 | ||
1727 | /* Read the MII Control Register. */ | |
1728 | ret_val = e1000_read_phy_reg(hw, PHY_CTRL, &mii_ctrl_reg); | |
1729 | if (ret_val) | |
1730 | return ret_val; | |
1731 | ||
1732 | /* We need to disable autoneg in order to force link and duplex. */ | |
1733 | ||
1734 | mii_ctrl_reg &= ~MII_CR_AUTO_NEG_EN; | |
1735 | ||
1736 | /* Are we forcing Full or Half Duplex? */ | |
1737 | if (hw->forced_speed_duplex == e1000_100_full || | |
1738 | hw->forced_speed_duplex == e1000_10_full) { | |
6cfbd97b JK |
1739 | /* We want to force full duplex so we SET the full duplex bits |
1740 | * in the Device and MII Control Registers. | |
120a5d0d JB |
1741 | */ |
1742 | ctrl |= E1000_CTRL_FD; | |
1743 | mii_ctrl_reg |= MII_CR_FULL_DUPLEX; | |
675ad473 | 1744 | e_dbg("Full Duplex\n"); |
120a5d0d | 1745 | } else { |
6cfbd97b JK |
1746 | /* We want to force half duplex so we CLEAR the full duplex bits |
1747 | * in the Device and MII Control Registers. | |
120a5d0d JB |
1748 | */ |
1749 | ctrl &= ~E1000_CTRL_FD; | |
1750 | mii_ctrl_reg &= ~MII_CR_FULL_DUPLEX; | |
675ad473 | 1751 | e_dbg("Half Duplex\n"); |
120a5d0d JB |
1752 | } |
1753 | ||
1754 | /* Are we forcing 100Mbps??? */ | |
1755 | if (hw->forced_speed_duplex == e1000_100_full || | |
1756 | hw->forced_speed_duplex == e1000_100_half) { | |
1757 | /* Set the 100Mb bit and turn off the 1000Mb and 10Mb bits. */ | |
1758 | ctrl |= E1000_CTRL_SPD_100; | |
1759 | mii_ctrl_reg |= MII_CR_SPEED_100; | |
1760 | mii_ctrl_reg &= ~(MII_CR_SPEED_1000 | MII_CR_SPEED_10); | |
675ad473 | 1761 | e_dbg("Forcing 100mb "); |
120a5d0d JB |
1762 | } else { |
1763 | /* Set the 10Mb bit and turn off the 1000Mb and 100Mb bits. */ | |
1764 | ctrl &= ~(E1000_CTRL_SPD_1000 | E1000_CTRL_SPD_100); | |
1765 | mii_ctrl_reg |= MII_CR_SPEED_10; | |
1766 | mii_ctrl_reg &= ~(MII_CR_SPEED_1000 | MII_CR_SPEED_100); | |
675ad473 | 1767 | e_dbg("Forcing 10mb "); |
120a5d0d JB |
1768 | } |
1769 | ||
1770 | e1000_config_collision_dist(hw); | |
1771 | ||
1772 | /* Write the configured values back to the Device Control Reg. */ | |
1773 | ew32(CTRL, ctrl); | |
1774 | ||
1775 | if (hw->phy_type == e1000_phy_m88) { | |
1776 | ret_val = | |
1777 | e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data); | |
1778 | if (ret_val) | |
1779 | return ret_val; | |
1780 | ||
6cfbd97b JK |
1781 | /* Clear Auto-Crossover to force MDI manually. M88E1000 requires |
1782 | * MDI forced whenever speed are duplex are forced. | |
120a5d0d JB |
1783 | */ |
1784 | phy_data &= ~M88E1000_PSCR_AUTO_X_MODE; | |
1785 | ret_val = | |
1786 | e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data); | |
1787 | if (ret_val) | |
1788 | return ret_val; | |
1789 | ||
675ad473 | 1790 | e_dbg("M88E1000 PSCR: %x\n", phy_data); |
120a5d0d JB |
1791 | |
1792 | /* Need to reset the PHY or these changes will be ignored */ | |
1793 | mii_ctrl_reg |= MII_CR_RESET; | |
1794 | ||
1795 | /* Disable MDI-X support for 10/100 */ | |
1796 | } else { | |
1797 | /* Clear Auto-Crossover to force MDI manually. IGP requires MDI | |
1798 | * forced whenever speed or duplex are forced. | |
1799 | */ | |
1800 | ret_val = | |
1801 | e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, &phy_data); | |
1802 | if (ret_val) | |
1803 | return ret_val; | |
1804 | ||
1805 | phy_data &= ~IGP01E1000_PSCR_AUTO_MDIX; | |
1806 | phy_data &= ~IGP01E1000_PSCR_FORCE_MDI_MDIX; | |
1807 | ||
1808 | ret_val = | |
1809 | e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL, phy_data); | |
1810 | if (ret_val) | |
1811 | return ret_val; | |
1812 | } | |
1813 | ||
1814 | /* Write back the modified PHY MII control register. */ | |
1815 | ret_val = e1000_write_phy_reg(hw, PHY_CTRL, mii_ctrl_reg); | |
1816 | if (ret_val) | |
1817 | return ret_val; | |
1818 | ||
1819 | udelay(1); | |
1820 | ||
1821 | /* The wait_autoneg_complete flag may be a little misleading here. | |
1822 | * Since we are forcing speed and duplex, Auto-Neg is not enabled. | |
1823 | * But we do want to delay for a period while forcing only so we | |
1824 | * don't generate false No Link messages. So we will wait here | |
1825 | * only if the user has set wait_autoneg_complete to 1, which is | |
1826 | * the default. | |
1827 | */ | |
1828 | if (hw->wait_autoneg_complete) { | |
1829 | /* We will wait for autoneg to complete. */ | |
675ad473 | 1830 | e_dbg("Waiting for forced speed/duplex link.\n"); |
120a5d0d JB |
1831 | mii_status_reg = 0; |
1832 | ||
6cfbd97b | 1833 | /* Wait for autoneg to complete or 4.5 seconds to expire */ |
120a5d0d | 1834 | for (i = PHY_FORCE_TIME; i > 0; i--) { |
6cfbd97b JK |
1835 | /* Read the MII Status Register and wait for Auto-Neg |
1836 | * Complete bit to be set. | |
120a5d0d JB |
1837 | */ |
1838 | ret_val = | |
1839 | e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg); | |
1840 | if (ret_val) | |
1841 | return ret_val; | |
1842 | ||
1843 | ret_val = | |
1844 | e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg); | |
1845 | if (ret_val) | |
1846 | return ret_val; | |
1847 | ||
1848 | if (mii_status_reg & MII_SR_LINK_STATUS) | |
1849 | break; | |
1850 | msleep(100); | |
1851 | } | |
1852 | if ((i == 0) && (hw->phy_type == e1000_phy_m88)) { | |
6cfbd97b JK |
1853 | /* We didn't get link. Reset the DSP and wait again |
1854 | * for link. | |
1855 | */ | |
120a5d0d JB |
1856 | ret_val = e1000_phy_reset_dsp(hw); |
1857 | if (ret_val) { | |
675ad473 | 1858 | e_dbg("Error Resetting PHY DSP\n"); |
120a5d0d JB |
1859 | return ret_val; |
1860 | } | |
1861 | } | |
6cfbd97b JK |
1862 | /* This loop will early-out if the link condition has been |
1863 | * met | |
1864 | */ | |
120a5d0d JB |
1865 | for (i = PHY_FORCE_TIME; i > 0; i--) { |
1866 | if (mii_status_reg & MII_SR_LINK_STATUS) | |
1867 | break; | |
1868 | msleep(100); | |
6cfbd97b JK |
1869 | /* Read the MII Status Register and wait for Auto-Neg |
1870 | * Complete bit to be set. | |
120a5d0d JB |
1871 | */ |
1872 | ret_val = | |
1873 | e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg); | |
1874 | if (ret_val) | |
1875 | return ret_val; | |
1876 | ||
1877 | ret_val = | |
1878 | e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg); | |
1879 | if (ret_val) | |
1880 | return ret_val; | |
1881 | } | |
1882 | } | |
1883 | ||
1884 | if (hw->phy_type == e1000_phy_m88) { | |
6cfbd97b JK |
1885 | /* Because we reset the PHY above, we need to re-force TX_CLK in |
1886 | * the Extended PHY Specific Control Register to 25MHz clock. | |
1887 | * This value defaults back to a 2.5MHz clock when the PHY is | |
1888 | * reset. | |
120a5d0d JB |
1889 | */ |
1890 | ret_val = | |
1891 | e1000_read_phy_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL, | |
1892 | &phy_data); | |
1893 | if (ret_val) | |
1894 | return ret_val; | |
1895 | ||
1896 | phy_data |= M88E1000_EPSCR_TX_CLK_25; | |
1897 | ret_val = | |
1898 | e1000_write_phy_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL, | |
1899 | phy_data); | |
1900 | if (ret_val) | |
1901 | return ret_val; | |
1902 | ||
6cfbd97b JK |
1903 | /* In addition, because of the s/w reset above, we need to |
1904 | * enable CRS on Tx. This must be set for both full and half | |
1905 | * duplex operation. | |
120a5d0d JB |
1906 | */ |
1907 | ret_val = | |
1908 | e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data); | |
1909 | if (ret_val) | |
1910 | return ret_val; | |
1911 | ||
1912 | phy_data |= M88E1000_PSCR_ASSERT_CRS_ON_TX; | |
1913 | ret_val = | |
1914 | e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data); | |
1915 | if (ret_val) | |
1916 | return ret_val; | |
1917 | ||
1918 | if ((hw->mac_type == e1000_82544 || hw->mac_type == e1000_82543) | |
1919 | && (!hw->autoneg) | |
1920 | && (hw->forced_speed_duplex == e1000_10_full | |
1921 | || hw->forced_speed_duplex == e1000_10_half)) { | |
1922 | ret_val = e1000_polarity_reversal_workaround(hw); | |
1923 | if (ret_val) | |
1924 | return ret_val; | |
1925 | } | |
1926 | } | |
1927 | return E1000_SUCCESS; | |
1928 | } | |
1929 | ||
1930 | /** | |
1931 | * e1000_config_collision_dist - set collision distance register | |
1932 | * @hw: Struct containing variables accessed by shared code | |
1933 | * | |
1934 | * Sets the collision distance in the Transmit Control register. | |
1935 | * Link should have been established previously. Reads the speed and duplex | |
1936 | * information from the Device Status register. | |
1937 | */ | |
1938 | void e1000_config_collision_dist(struct e1000_hw *hw) | |
1939 | { | |
1940 | u32 tctl, coll_dist; | |
1941 | ||
675ad473 | 1942 | e_dbg("e1000_config_collision_dist"); |
120a5d0d JB |
1943 | |
1944 | if (hw->mac_type < e1000_82543) | |
1945 | coll_dist = E1000_COLLISION_DISTANCE_82542; | |
1946 | else | |
1947 | coll_dist = E1000_COLLISION_DISTANCE; | |
1948 | ||
1949 | tctl = er32(TCTL); | |
1950 | ||
1951 | tctl &= ~E1000_TCTL_COLD; | |
1952 | tctl |= coll_dist << E1000_COLD_SHIFT; | |
1953 | ||
1954 | ew32(TCTL, tctl); | |
1955 | E1000_WRITE_FLUSH(); | |
1956 | } | |
1957 | ||
1958 | /** | |
1959 | * e1000_config_mac_to_phy - sync phy and mac settings | |
1960 | * @hw: Struct containing variables accessed by shared code | |
1961 | * @mii_reg: data to write to the MII control register | |
1962 | * | |
1963 | * Sets MAC speed and duplex settings to reflect the those in the PHY | |
1964 | * The contents of the PHY register containing the needed information need to | |
1965 | * be passed in. | |
1966 | */ | |
1967 | static s32 e1000_config_mac_to_phy(struct e1000_hw *hw) | |
1968 | { | |
1969 | u32 ctrl; | |
1970 | s32 ret_val; | |
1971 | u16 phy_data; | |
1972 | ||
675ad473 | 1973 | e_dbg("e1000_config_mac_to_phy"); |
120a5d0d JB |
1974 | |
1975 | /* 82544 or newer MAC, Auto Speed Detection takes care of | |
6cfbd97b JK |
1976 | * MAC speed/duplex configuration. |
1977 | */ | |
5377a416 | 1978 | if ((hw->mac_type >= e1000_82544) && (hw->mac_type != e1000_ce4100)) |
120a5d0d JB |
1979 | return E1000_SUCCESS; |
1980 | ||
1981 | /* Read the Device Control Register and set the bits to Force Speed | |
1982 | * and Duplex. | |
1983 | */ | |
1984 | ctrl = er32(CTRL); | |
1985 | ctrl |= (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX); | |
1986 | ctrl &= ~(E1000_CTRL_SPD_SEL | E1000_CTRL_ILOS); | |
1987 | ||
5377a416 DB |
1988 | switch (hw->phy_type) { |
1989 | case e1000_phy_8201: | |
1990 | ret_val = e1000_read_phy_reg(hw, PHY_CTRL, &phy_data); | |
1991 | if (ret_val) | |
1992 | return ret_val; | |
120a5d0d | 1993 | |
5377a416 DB |
1994 | if (phy_data & RTL_PHY_CTRL_FD) |
1995 | ctrl |= E1000_CTRL_FD; | |
1996 | else | |
1997 | ctrl &= ~E1000_CTRL_FD; | |
120a5d0d | 1998 | |
5377a416 DB |
1999 | if (phy_data & RTL_PHY_CTRL_SPD_100) |
2000 | ctrl |= E1000_CTRL_SPD_100; | |
2001 | else | |
2002 | ctrl |= E1000_CTRL_SPD_10; | |
120a5d0d | 2003 | |
5377a416 DB |
2004 | e1000_config_collision_dist(hw); |
2005 | break; | |
2006 | default: | |
2007 | /* Set up duplex in the Device Control and Transmit Control | |
2008 | * registers depending on negotiated values. | |
2009 | */ | |
2010 | ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS, | |
6cfbd97b | 2011 | &phy_data); |
5377a416 DB |
2012 | if (ret_val) |
2013 | return ret_val; | |
2014 | ||
2015 | if (phy_data & M88E1000_PSSR_DPLX) | |
2016 | ctrl |= E1000_CTRL_FD; | |
2017 | else | |
2018 | ctrl &= ~E1000_CTRL_FD; | |
2019 | ||
2020 | e1000_config_collision_dist(hw); | |
2021 | ||
2022 | /* Set up speed in the Device Control register depending on | |
2023 | * negotiated values. | |
2024 | */ | |
2025 | if ((phy_data & M88E1000_PSSR_SPEED) == M88E1000_PSSR_1000MBS) | |
2026 | ctrl |= E1000_CTRL_SPD_1000; | |
2027 | else if ((phy_data & M88E1000_PSSR_SPEED) == | |
6cfbd97b | 2028 | M88E1000_PSSR_100MBS) |
5377a416 DB |
2029 | ctrl |= E1000_CTRL_SPD_100; |
2030 | } | |
120a5d0d JB |
2031 | |
2032 | /* Write the configured values back to the Device Control Reg. */ | |
2033 | ew32(CTRL, ctrl); | |
2034 | return E1000_SUCCESS; | |
2035 | } | |
2036 | ||
2037 | /** | |
2038 | * e1000_force_mac_fc - force flow control settings | |
2039 | * @hw: Struct containing variables accessed by shared code | |
2040 | * | |
2041 | * Forces the MAC's flow control settings. | |
1da177e4 LT |
2042 | * Sets the TFCE and RFCE bits in the device control register to reflect |
2043 | * the adapter settings. TFCE and RFCE need to be explicitly set by | |
2044 | * software when a Copper PHY is used because autonegotiation is managed | |
2045 | * by the PHY rather than the MAC. Software must also configure these | |
2046 | * bits when link is forced on a fiber connection. | |
120a5d0d | 2047 | */ |
64798845 | 2048 | s32 e1000_force_mac_fc(struct e1000_hw *hw) |
1da177e4 | 2049 | { |
120a5d0d JB |
2050 | u32 ctrl; |
2051 | ||
675ad473 | 2052 | e_dbg("e1000_force_mac_fc"); |
120a5d0d JB |
2053 | |
2054 | /* Get the current configuration of the Device Control Register */ | |
2055 | ctrl = er32(CTRL); | |
2056 | ||
2057 | /* Because we didn't get link via the internal auto-negotiation | |
2058 | * mechanism (we either forced link or we got link via PHY | |
2059 | * auto-neg), we have to manually enable/disable transmit an | |
2060 | * receive flow control. | |
2061 | * | |
2062 | * The "Case" statement below enables/disable flow control | |
2063 | * according to the "hw->fc" parameter. | |
2064 | * | |
2065 | * The possible values of the "fc" parameter are: | |
2066 | * 0: Flow control is completely disabled | |
2067 | * 1: Rx flow control is enabled (we can receive pause | |
2068 | * frames but not send pause frames). | |
2069 | * 2: Tx flow control is enabled (we can send pause frames | |
2070 | * frames but we do not receive pause frames). | |
2071 | * 3: Both Rx and TX flow control (symmetric) is enabled. | |
2072 | * other: No other values should be possible at this point. | |
2073 | */ | |
2074 | ||
2075 | switch (hw->fc) { | |
2076 | case E1000_FC_NONE: | |
2077 | ctrl &= (~(E1000_CTRL_TFCE | E1000_CTRL_RFCE)); | |
2078 | break; | |
2079 | case E1000_FC_RX_PAUSE: | |
2080 | ctrl &= (~E1000_CTRL_TFCE); | |
2081 | ctrl |= E1000_CTRL_RFCE; | |
2082 | break; | |
2083 | case E1000_FC_TX_PAUSE: | |
2084 | ctrl &= (~E1000_CTRL_RFCE); | |
2085 | ctrl |= E1000_CTRL_TFCE; | |
2086 | break; | |
2087 | case E1000_FC_FULL: | |
2088 | ctrl |= (E1000_CTRL_TFCE | E1000_CTRL_RFCE); | |
2089 | break; | |
2090 | default: | |
675ad473 | 2091 | e_dbg("Flow control param set incorrectly\n"); |
120a5d0d JB |
2092 | return -E1000_ERR_CONFIG; |
2093 | } | |
2094 | ||
2095 | /* Disable TX Flow Control for 82542 (rev 2.0) */ | |
2096 | if (hw->mac_type == e1000_82542_rev2_0) | |
2097 | ctrl &= (~E1000_CTRL_TFCE); | |
2098 | ||
2099 | ew32(CTRL, ctrl); | |
2100 | return E1000_SUCCESS; | |
1da177e4 LT |
2101 | } |
2102 | ||
120a5d0d JB |
2103 | /** |
2104 | * e1000_config_fc_after_link_up - configure flow control after autoneg | |
2105 | * @hw: Struct containing variables accessed by shared code | |
1da177e4 | 2106 | * |
120a5d0d | 2107 | * Configures flow control settings after link is established |
1da177e4 LT |
2108 | * Should be called immediately after a valid link has been established. |
2109 | * Forces MAC flow control settings if link was forced. When in MII/GMII mode | |
2110 | * and autonegotiation is enabled, the MAC flow control settings will be set | |
2111 | * based on the flow control negotiated by the PHY. In TBI mode, the TFCE | |
120a5d0d JB |
2112 | * and RFCE bits will be automatically set to the negotiated flow control mode. |
2113 | */ | |
64798845 | 2114 | static s32 e1000_config_fc_after_link_up(struct e1000_hw *hw) |
1da177e4 | 2115 | { |
120a5d0d JB |
2116 | s32 ret_val; |
2117 | u16 mii_status_reg; | |
2118 | u16 mii_nway_adv_reg; | |
2119 | u16 mii_nway_lp_ability_reg; | |
2120 | u16 speed; | |
2121 | u16 duplex; | |
2122 | ||
675ad473 | 2123 | e_dbg("e1000_config_fc_after_link_up"); |
120a5d0d JB |
2124 | |
2125 | /* Check for the case where we have fiber media and auto-neg failed | |
2126 | * so we had to force link. In this case, we need to force the | |
2127 | * configuration of the MAC to match the "fc" parameter. | |
2128 | */ | |
2129 | if (((hw->media_type == e1000_media_type_fiber) && (hw->autoneg_failed)) | |
2130 | || ((hw->media_type == e1000_media_type_internal_serdes) | |
2131 | && (hw->autoneg_failed)) | |
2132 | || ((hw->media_type == e1000_media_type_copper) | |
2133 | && (!hw->autoneg))) { | |
2134 | ret_val = e1000_force_mac_fc(hw); | |
2135 | if (ret_val) { | |
675ad473 | 2136 | e_dbg("Error forcing flow control settings\n"); |
120a5d0d JB |
2137 | return ret_val; |
2138 | } | |
2139 | } | |
2140 | ||
2141 | /* Check for the case where we have copper media and auto-neg is | |
2142 | * enabled. In this case, we need to check and see if Auto-Neg | |
2143 | * has completed, and if so, how the PHY and link partner has | |
2144 | * flow control configured. | |
2145 | */ | |
2146 | if ((hw->media_type == e1000_media_type_copper) && hw->autoneg) { | |
2147 | /* Read the MII Status Register and check to see if AutoNeg | |
2148 | * has completed. We read this twice because this reg has | |
2149 | * some "sticky" (latched) bits. | |
2150 | */ | |
2151 | ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg); | |
2152 | if (ret_val) | |
2153 | return ret_val; | |
2154 | ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg); | |
2155 | if (ret_val) | |
2156 | return ret_val; | |
2157 | ||
2158 | if (mii_status_reg & MII_SR_AUTONEG_COMPLETE) { | |
2159 | /* The AutoNeg process has completed, so we now need to | |
2160 | * read both the Auto Negotiation Advertisement Register | |
6cfbd97b JK |
2161 | * (Address 4) and the Auto_Negotiation Base Page |
2162 | * Ability Register (Address 5) to determine how flow | |
2163 | * control was negotiated. | |
120a5d0d JB |
2164 | */ |
2165 | ret_val = e1000_read_phy_reg(hw, PHY_AUTONEG_ADV, | |
2166 | &mii_nway_adv_reg); | |
2167 | if (ret_val) | |
2168 | return ret_val; | |
2169 | ret_val = e1000_read_phy_reg(hw, PHY_LP_ABILITY, | |
2170 | &mii_nway_lp_ability_reg); | |
2171 | if (ret_val) | |
2172 | return ret_val; | |
2173 | ||
6cfbd97b JK |
2174 | /* Two bits in the Auto Negotiation Advertisement |
2175 | * Register (Address 4) and two bits in the Auto | |
2176 | * Negotiation Base Page Ability Register (Address 5) | |
2177 | * determine flow control for both the PHY and the link | |
2178 | * partner. The following table, taken out of the IEEE | |
2179 | * 802.3ab/D6.0 dated March 25, 1999, describes these | |
2180 | * PAUSE resolution bits and how flow control is | |
2181 | * determined based upon these settings. | |
120a5d0d JB |
2182 | * NOTE: DC = Don't Care |
2183 | * | |
2184 | * LOCAL DEVICE | LINK PARTNER | |
2185 | * PAUSE | ASM_DIR | PAUSE | ASM_DIR | NIC Resolution | |
6cfbd97b | 2186 | *-------|---------|-------|---------|------------------ |
120a5d0d JB |
2187 | * 0 | 0 | DC | DC | E1000_FC_NONE |
2188 | * 0 | 1 | 0 | DC | E1000_FC_NONE | |
2189 | * 0 | 1 | 1 | 0 | E1000_FC_NONE | |
2190 | * 0 | 1 | 1 | 1 | E1000_FC_TX_PAUSE | |
2191 | * 1 | 0 | 0 | DC | E1000_FC_NONE | |
2192 | * 1 | DC | 1 | DC | E1000_FC_FULL | |
2193 | * 1 | 1 | 0 | 0 | E1000_FC_NONE | |
2194 | * 1 | 1 | 0 | 1 | E1000_FC_RX_PAUSE | |
2195 | * | |
2196 | */ | |
2197 | /* Are both PAUSE bits set to 1? If so, this implies | |
2198 | * Symmetric Flow Control is enabled at both ends. The | |
2199 | * ASM_DIR bits are irrelevant per the spec. | |
2200 | * | |
2201 | * For Symmetric Flow Control: | |
2202 | * | |
2203 | * LOCAL DEVICE | LINK PARTNER | |
2204 | * PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result | |
6cfbd97b | 2205 | *-------|---------|-------|---------|------------------ |
120a5d0d JB |
2206 | * 1 | DC | 1 | DC | E1000_FC_FULL |
2207 | * | |
2208 | */ | |
2209 | if ((mii_nway_adv_reg & NWAY_AR_PAUSE) && | |
2210 | (mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE)) { | |
6cfbd97b JK |
2211 | /* Now we need to check if the user selected Rx |
2212 | * ONLY of pause frames. In this case, we had | |
2213 | * to advertise FULL flow control because we | |
2214 | * could not advertise Rx ONLY. Hence, we must | |
2215 | * now check to see if we need to turn OFF the | |
2216 | * TRANSMISSION of PAUSE frames. | |
120a5d0d JB |
2217 | */ |
2218 | if (hw->original_fc == E1000_FC_FULL) { | |
2219 | hw->fc = E1000_FC_FULL; | |
675ad473 | 2220 | e_dbg("Flow Control = FULL.\n"); |
120a5d0d JB |
2221 | } else { |
2222 | hw->fc = E1000_FC_RX_PAUSE; | |
675ad473 | 2223 | e_dbg |
120a5d0d JB |
2224 | ("Flow Control = RX PAUSE frames only.\n"); |
2225 | } | |
2226 | } | |
2227 | /* For receiving PAUSE frames ONLY. | |
2228 | * | |
2229 | * LOCAL DEVICE | LINK PARTNER | |
2230 | * PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result | |
6cfbd97b | 2231 | *-------|---------|-------|---------|------------------ |
120a5d0d JB |
2232 | * 0 | 1 | 1 | 1 | E1000_FC_TX_PAUSE |
2233 | * | |
2234 | */ | |
2235 | else if (!(mii_nway_adv_reg & NWAY_AR_PAUSE) && | |
2236 | (mii_nway_adv_reg & NWAY_AR_ASM_DIR) && | |
2237 | (mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE) && | |
2238 | (mii_nway_lp_ability_reg & NWAY_LPAR_ASM_DIR)) | |
2239 | { | |
2240 | hw->fc = E1000_FC_TX_PAUSE; | |
675ad473 | 2241 | e_dbg |
120a5d0d JB |
2242 | ("Flow Control = TX PAUSE frames only.\n"); |
2243 | } | |
2244 | /* For transmitting PAUSE frames ONLY. | |
2245 | * | |
2246 | * LOCAL DEVICE | LINK PARTNER | |
2247 | * PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result | |
6cfbd97b | 2248 | *-------|---------|-------|---------|------------------ |
120a5d0d JB |
2249 | * 1 | 1 | 0 | 1 | E1000_FC_RX_PAUSE |
2250 | * | |
2251 | */ | |
2252 | else if ((mii_nway_adv_reg & NWAY_AR_PAUSE) && | |
2253 | (mii_nway_adv_reg & NWAY_AR_ASM_DIR) && | |
2254 | !(mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE) && | |
2255 | (mii_nway_lp_ability_reg & NWAY_LPAR_ASM_DIR)) | |
2256 | { | |
2257 | hw->fc = E1000_FC_RX_PAUSE; | |
675ad473 | 2258 | e_dbg |
120a5d0d JB |
2259 | ("Flow Control = RX PAUSE frames only.\n"); |
2260 | } | |
6cfbd97b JK |
2261 | /* Per the IEEE spec, at this point flow control should |
2262 | * be disabled. However, we want to consider that we | |
2263 | * could be connected to a legacy switch that doesn't | |
2264 | * advertise desired flow control, but can be forced on | |
2265 | * the link partner. So if we advertised no flow | |
2266 | * control, that is what we will resolve to. If we | |
2267 | * advertised some kind of receive capability (Rx Pause | |
2268 | * Only or Full Flow Control) and the link partner | |
2269 | * advertised none, we will configure ourselves to | |
2270 | * enable Rx Flow Control only. We can do this safely | |
2271 | * for two reasons: If the link partner really | |
2272 | * didn't want flow control enabled, and we enable Rx, | |
2273 | * no harm done since we won't be receiving any PAUSE | |
2274 | * frames anyway. If the intent on the link partner was | |
2275 | * to have flow control enabled, then by us enabling Rx | |
2276 | * only, we can at least receive pause frames and | |
2277 | * process them. This is a good idea because in most | |
2278 | * cases, since we are predominantly a server NIC, more | |
2279 | * times than not we will be asked to delay transmission | |
2280 | * of packets than asking our link partner to pause | |
2281 | * transmission of frames. | |
120a5d0d JB |
2282 | */ |
2283 | else if ((hw->original_fc == E1000_FC_NONE || | |
2284 | hw->original_fc == E1000_FC_TX_PAUSE) || | |
2285 | hw->fc_strict_ieee) { | |
2286 | hw->fc = E1000_FC_NONE; | |
675ad473 | 2287 | e_dbg("Flow Control = NONE.\n"); |
120a5d0d JB |
2288 | } else { |
2289 | hw->fc = E1000_FC_RX_PAUSE; | |
675ad473 | 2290 | e_dbg |
120a5d0d JB |
2291 | ("Flow Control = RX PAUSE frames only.\n"); |
2292 | } | |
2293 | ||
2294 | /* Now we need to do one last check... If we auto- | |
2295 | * negotiated to HALF DUPLEX, flow control should not be | |
2296 | * enabled per IEEE 802.3 spec. | |
2297 | */ | |
2298 | ret_val = | |
2299 | e1000_get_speed_and_duplex(hw, &speed, &duplex); | |
2300 | if (ret_val) { | |
675ad473 | 2301 | e_dbg |
120a5d0d JB |
2302 | ("Error getting link speed and duplex\n"); |
2303 | return ret_val; | |
2304 | } | |
2305 | ||
2306 | if (duplex == HALF_DUPLEX) | |
2307 | hw->fc = E1000_FC_NONE; | |
2308 | ||
2309 | /* Now we call a subroutine to actually force the MAC | |
2310 | * controller to use the correct flow control settings. | |
2311 | */ | |
2312 | ret_val = e1000_force_mac_fc(hw); | |
2313 | if (ret_val) { | |
675ad473 | 2314 | e_dbg |
120a5d0d JB |
2315 | ("Error forcing flow control settings\n"); |
2316 | return ret_val; | |
2317 | } | |
2318 | } else { | |
675ad473 | 2319 | e_dbg |
120a5d0d JB |
2320 | ("Copper PHY and Auto Neg has not completed.\n"); |
2321 | } | |
2322 | } | |
2323 | return E1000_SUCCESS; | |
1da177e4 LT |
2324 | } |
2325 | ||
be0f0719 | 2326 | /** |
120a5d0d JB |
2327 | * e1000_check_for_serdes_link_generic - Check for link (Serdes) |
2328 | * @hw: pointer to the HW structure | |
be0f0719 | 2329 | * |
120a5d0d JB |
2330 | * Checks for link up on the hardware. If link is not up and we have |
2331 | * a signal, then we need to force link up. | |
2332 | */ | |
11b7f7b3 | 2333 | static s32 e1000_check_for_serdes_link_generic(struct e1000_hw *hw) |
be0f0719 JB |
2334 | { |
2335 | u32 rxcw; | |
2336 | u32 ctrl; | |
2337 | u32 status; | |
2338 | s32 ret_val = E1000_SUCCESS; | |
2339 | ||
675ad473 | 2340 | e_dbg("e1000_check_for_serdes_link_generic"); |
be0f0719 JB |
2341 | |
2342 | ctrl = er32(CTRL); | |
2343 | status = er32(STATUS); | |
2344 | rxcw = er32(RXCW); | |
2345 | ||
6cfbd97b | 2346 | /* If we don't have link (auto-negotiation failed or link partner |
be0f0719 JB |
2347 | * cannot auto-negotiate), and our link partner is not trying to |
2348 | * auto-negotiate with us (we are receiving idles or data), | |
2349 | * we need to force link up. We also need to give auto-negotiation | |
2350 | * time to complete. | |
2351 | */ | |
2352 | /* (ctrl & E1000_CTRL_SWDPIN1) == 1 == have signal */ | |
2353 | if ((!(status & E1000_STATUS_LU)) && (!(rxcw & E1000_RXCW_C))) { | |
2354 | if (hw->autoneg_failed == 0) { | |
2355 | hw->autoneg_failed = 1; | |
2356 | goto out; | |
2357 | } | |
675ad473 | 2358 | e_dbg("NOT RXing /C/, disable AutoNeg and force link.\n"); |
be0f0719 JB |
2359 | |
2360 | /* Disable auto-negotiation in the TXCW register */ | |
2361 | ew32(TXCW, (hw->txcw & ~E1000_TXCW_ANE)); | |
2362 | ||
2363 | /* Force link-up and also force full-duplex. */ | |
2364 | ctrl = er32(CTRL); | |
2365 | ctrl |= (E1000_CTRL_SLU | E1000_CTRL_FD); | |
2366 | ew32(CTRL, ctrl); | |
2367 | ||
2368 | /* Configure Flow Control after forcing link up. */ | |
2369 | ret_val = e1000_config_fc_after_link_up(hw); | |
2370 | if (ret_val) { | |
675ad473 | 2371 | e_dbg("Error configuring flow control\n"); |
be0f0719 JB |
2372 | goto out; |
2373 | } | |
2374 | } else if ((ctrl & E1000_CTRL_SLU) && (rxcw & E1000_RXCW_C)) { | |
6cfbd97b | 2375 | /* If we are forcing link and we are receiving /C/ ordered |
be0f0719 JB |
2376 | * sets, re-enable auto-negotiation in the TXCW register |
2377 | * and disable forced link in the Device Control register | |
2378 | * in an attempt to auto-negotiate with our link partner. | |
2379 | */ | |
675ad473 | 2380 | e_dbg("RXing /C/, enable AutoNeg and stop forcing link.\n"); |
be0f0719 JB |
2381 | ew32(TXCW, hw->txcw); |
2382 | ew32(CTRL, (ctrl & ~E1000_CTRL_SLU)); | |
2383 | ||
2384 | hw->serdes_has_link = true; | |
2385 | } else if (!(E1000_TXCW_ANE & er32(TXCW))) { | |
6cfbd97b | 2386 | /* If we force link for non-auto-negotiation switch, check |
be0f0719 JB |
2387 | * link status based on MAC synchronization for internal |
2388 | * serdes media type. | |
2389 | */ | |
2390 | /* SYNCH bit and IV bit are sticky. */ | |
2391 | udelay(10); | |
2392 | rxcw = er32(RXCW); | |
2393 | if (rxcw & E1000_RXCW_SYNCH) { | |
2394 | if (!(rxcw & E1000_RXCW_IV)) { | |
2395 | hw->serdes_has_link = true; | |
675ad473 | 2396 | e_dbg("SERDES: Link up - forced.\n"); |
be0f0719 JB |
2397 | } |
2398 | } else { | |
2399 | hw->serdes_has_link = false; | |
675ad473 | 2400 | e_dbg("SERDES: Link down - force failed.\n"); |
be0f0719 JB |
2401 | } |
2402 | } | |
2403 | ||
2404 | if (E1000_TXCW_ANE & er32(TXCW)) { | |
2405 | status = er32(STATUS); | |
2406 | if (status & E1000_STATUS_LU) { | |
2407 | /* SYNCH bit and IV bit are sticky, so reread rxcw. */ | |
2408 | udelay(10); | |
2409 | rxcw = er32(RXCW); | |
2410 | if (rxcw & E1000_RXCW_SYNCH) { | |
2411 | if (!(rxcw & E1000_RXCW_IV)) { | |
2412 | hw->serdes_has_link = true; | |
675ad473 | 2413 | e_dbg("SERDES: Link up - autoneg " |
120a5d0d | 2414 | "completed successfully.\n"); |
be0f0719 JB |
2415 | } else { |
2416 | hw->serdes_has_link = false; | |
675ad473 | 2417 | e_dbg("SERDES: Link down - invalid" |
120a5d0d JB |
2418 | "codewords detected in autoneg.\n"); |
2419 | } | |
2420 | } else { | |
2421 | hw->serdes_has_link = false; | |
675ad473 | 2422 | e_dbg("SERDES: Link down - no sync.\n"); |
120a5d0d JB |
2423 | } |
2424 | } else { | |
2425 | hw->serdes_has_link = false; | |
675ad473 | 2426 | e_dbg("SERDES: Link down - autoneg failed\n"); |
120a5d0d JB |
2427 | } |
2428 | } | |
2429 | ||
2430 | out: | |
2431 | return ret_val; | |
2432 | } | |
2433 | ||
2434 | /** | |
2435 | * e1000_check_for_link | |
2436 | * @hw: Struct containing variables accessed by shared code | |
2437 | * | |
2438 | * Checks to see if the link status of the hardware has changed. | |
2439 | * Called by any function that needs to check the link status of the adapter. | |
2440 | */ | |
2441 | s32 e1000_check_for_link(struct e1000_hw *hw) | |
2442 | { | |
2443 | u32 rxcw = 0; | |
2444 | u32 ctrl; | |
2445 | u32 status; | |
2446 | u32 rctl; | |
2447 | u32 icr; | |
2448 | u32 signal = 0; | |
2449 | s32 ret_val; | |
2450 | u16 phy_data; | |
2451 | ||
675ad473 | 2452 | e_dbg("e1000_check_for_link"); |
120a5d0d JB |
2453 | |
2454 | ctrl = er32(CTRL); | |
2455 | status = er32(STATUS); | |
2456 | ||
2457 | /* On adapters with a MAC newer than 82544, SW Definable pin 1 will be | |
2458 | * set when the optics detect a signal. On older adapters, it will be | |
2459 | * cleared when there is a signal. This applies to fiber media only. | |
2460 | */ | |
2461 | if ((hw->media_type == e1000_media_type_fiber) || | |
2462 | (hw->media_type == e1000_media_type_internal_serdes)) { | |
2463 | rxcw = er32(RXCW); | |
2464 | ||
2465 | if (hw->media_type == e1000_media_type_fiber) { | |
2466 | signal = | |
2467 | (hw->mac_type > | |
2468 | e1000_82544) ? E1000_CTRL_SWDPIN1 : 0; | |
2469 | if (status & E1000_STATUS_LU) | |
2470 | hw->get_link_status = false; | |
2471 | } | |
2472 | } | |
2473 | ||
2474 | /* If we have a copper PHY then we only want to go out to the PHY | |
2475 | * registers to see if Auto-Neg has completed and/or if our link | |
2476 | * status has changed. The get_link_status flag will be set if we | |
2477 | * receive a Link Status Change interrupt or we have Rx Sequence | |
2478 | * Errors. | |
2479 | */ | |
2480 | if ((hw->media_type == e1000_media_type_copper) && hw->get_link_status) { | |
2481 | /* First we want to see if the MII Status Register reports | |
2482 | * link. If so, then we want to get the current speed/duplex | |
2483 | * of the PHY. | |
2484 | * Read the register twice since the link bit is sticky. | |
2485 | */ | |
2486 | ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data); | |
2487 | if (ret_val) | |
2488 | return ret_val; | |
2489 | ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data); | |
2490 | if (ret_val) | |
2491 | return ret_val; | |
2492 | ||
2493 | if (phy_data & MII_SR_LINK_STATUS) { | |
2494 | hw->get_link_status = false; | |
6cfbd97b JK |
2495 | /* Check if there was DownShift, must be checked |
2496 | * immediately after link-up | |
2497 | */ | |
120a5d0d JB |
2498 | e1000_check_downshift(hw); |
2499 | ||
2500 | /* If we are on 82544 or 82543 silicon and speed/duplex | |
6cfbd97b JK |
2501 | * are forced to 10H or 10F, then we will implement the |
2502 | * polarity reversal workaround. We disable interrupts | |
2503 | * first, and upon returning, place the devices | |
2504 | * interrupt state to its previous value except for the | |
2505 | * link status change interrupt which will | |
120a5d0d JB |
2506 | * happen due to the execution of this workaround. |
2507 | */ | |
2508 | ||
2509 | if ((hw->mac_type == e1000_82544 | |
2510 | || hw->mac_type == e1000_82543) && (!hw->autoneg) | |
2511 | && (hw->forced_speed_duplex == e1000_10_full | |
2512 | || hw->forced_speed_duplex == e1000_10_half)) { | |
2513 | ew32(IMC, 0xffffffff); | |
2514 | ret_val = | |
2515 | e1000_polarity_reversal_workaround(hw); | |
2516 | icr = er32(ICR); | |
2517 | ew32(ICS, (icr & ~E1000_ICS_LSC)); | |
2518 | ew32(IMS, IMS_ENABLE_MASK); | |
2519 | } | |
2520 | ||
2521 | } else { | |
2522 | /* No link detected */ | |
2523 | e1000_config_dsp_after_link_change(hw, false); | |
2524 | return 0; | |
2525 | } | |
2526 | ||
2527 | /* If we are forcing speed/duplex, then we simply return since | |
2528 | * we have already determined whether we have link or not. | |
2529 | */ | |
2530 | if (!hw->autoneg) | |
2531 | return -E1000_ERR_CONFIG; | |
2532 | ||
2533 | /* optimize the dsp settings for the igp phy */ | |
2534 | e1000_config_dsp_after_link_change(hw, true); | |
2535 | ||
2536 | /* We have a M88E1000 PHY and Auto-Neg is enabled. If we | |
2537 | * have Si on board that is 82544 or newer, Auto | |
2538 | * Speed Detection takes care of MAC speed/duplex | |
2539 | * configuration. So we only need to configure Collision | |
2540 | * Distance in the MAC. Otherwise, we need to force | |
2541 | * speed/duplex on the MAC to the current PHY speed/duplex | |
2542 | * settings. | |
2543 | */ | |
5377a416 DB |
2544 | if ((hw->mac_type >= e1000_82544) && |
2545 | (hw->mac_type != e1000_ce4100)) | |
120a5d0d JB |
2546 | e1000_config_collision_dist(hw); |
2547 | else { | |
2548 | ret_val = e1000_config_mac_to_phy(hw); | |
2549 | if (ret_val) { | |
675ad473 | 2550 | e_dbg |
120a5d0d JB |
2551 | ("Error configuring MAC to PHY settings\n"); |
2552 | return ret_val; | |
2553 | } | |
2554 | } | |
2555 | ||
6cfbd97b JK |
2556 | /* Configure Flow Control now that Auto-Neg has completed. |
2557 | * First, we need to restore the desired flow control settings | |
2558 | * because we may have had to re-autoneg with a different link | |
2559 | * partner. | |
120a5d0d JB |
2560 | */ |
2561 | ret_val = e1000_config_fc_after_link_up(hw); | |
2562 | if (ret_val) { | |
675ad473 | 2563 | e_dbg("Error configuring flow control\n"); |
120a5d0d JB |
2564 | return ret_val; |
2565 | } | |
2566 | ||
2567 | /* At this point we know that we are on copper and we have | |
6cfbd97b JK |
2568 | * auto-negotiated link. These are conditions for checking the |
2569 | * link partner capability register. We use the link speed to | |
2570 | * determine if TBI compatibility needs to be turned on or off. | |
2571 | * If the link is not at gigabit speed, then TBI compatibility | |
2572 | * is not needed. If we are at gigabit speed, we turn on TBI | |
2573 | * compatibility. | |
120a5d0d JB |
2574 | */ |
2575 | if (hw->tbi_compatibility_en) { | |
2576 | u16 speed, duplex; | |
2577 | ret_val = | |
2578 | e1000_get_speed_and_duplex(hw, &speed, &duplex); | |
2579 | if (ret_val) { | |
675ad473 | 2580 | e_dbg |
120a5d0d JB |
2581 | ("Error getting link speed and duplex\n"); |
2582 | return ret_val; | |
2583 | } | |
2584 | if (speed != SPEED_1000) { | |
6cfbd97b JK |
2585 | /* If link speed is not set to gigabit speed, we |
2586 | * do not need to enable TBI compatibility. | |
120a5d0d JB |
2587 | */ |
2588 | if (hw->tbi_compatibility_on) { | |
6cfbd97b JK |
2589 | /* If we previously were in the mode, |
2590 | * turn it off. | |
2591 | */ | |
120a5d0d JB |
2592 | rctl = er32(RCTL); |
2593 | rctl &= ~E1000_RCTL_SBP; | |
2594 | ew32(RCTL, rctl); | |
2595 | hw->tbi_compatibility_on = false; | |
be0f0719 JB |
2596 | } |
2597 | } else { | |
6cfbd97b JK |
2598 | /* If TBI compatibility is was previously off, |
2599 | * turn it on. For compatibility with a TBI link | |
2600 | * partner, we will store bad packets. Some | |
2601 | * frames have an additional byte on the end and | |
120a5d0d JB |
2602 | * will look like CRC errors to to the hardware. |
2603 | */ | |
2604 | if (!hw->tbi_compatibility_on) { | |
2605 | hw->tbi_compatibility_on = true; | |
2606 | rctl = er32(RCTL); | |
2607 | rctl |= E1000_RCTL_SBP; | |
2608 | ew32(RCTL, rctl); | |
2609 | } | |
be0f0719 | 2610 | } |
be0f0719 JB |
2611 | } |
2612 | } | |
2613 | ||
120a5d0d JB |
2614 | if ((hw->media_type == e1000_media_type_fiber) || |
2615 | (hw->media_type == e1000_media_type_internal_serdes)) | |
2616 | e1000_check_for_serdes_link_generic(hw); | |
2617 | ||
2618 | return E1000_SUCCESS; | |
1da177e4 LT |
2619 | } |
2620 | ||
120a5d0d JB |
2621 | /** |
2622 | * e1000_get_speed_and_duplex | |
2623 | * @hw: Struct containing variables accessed by shared code | |
2624 | * @speed: Speed of the connection | |
2625 | * @duplex: Duplex setting of the connection | |
49ce9c2c | 2626 | * |
1da177e4 | 2627 | * Detects the current speed and duplex settings of the hardware. |
120a5d0d | 2628 | */ |
64798845 | 2629 | s32 e1000_get_speed_and_duplex(struct e1000_hw *hw, u16 *speed, u16 *duplex) |
1da177e4 | 2630 | { |
120a5d0d JB |
2631 | u32 status; |
2632 | s32 ret_val; | |
2633 | u16 phy_data; | |
2634 | ||
675ad473 | 2635 | e_dbg("e1000_get_speed_and_duplex"); |
120a5d0d JB |
2636 | |
2637 | if (hw->mac_type >= e1000_82543) { | |
2638 | status = er32(STATUS); | |
2639 | if (status & E1000_STATUS_SPEED_1000) { | |
2640 | *speed = SPEED_1000; | |
675ad473 | 2641 | e_dbg("1000 Mbs, "); |
120a5d0d JB |
2642 | } else if (status & E1000_STATUS_SPEED_100) { |
2643 | *speed = SPEED_100; | |
675ad473 | 2644 | e_dbg("100 Mbs, "); |
120a5d0d JB |
2645 | } else { |
2646 | *speed = SPEED_10; | |
675ad473 | 2647 | e_dbg("10 Mbs, "); |
120a5d0d JB |
2648 | } |
2649 | ||
2650 | if (status & E1000_STATUS_FD) { | |
2651 | *duplex = FULL_DUPLEX; | |
675ad473 | 2652 | e_dbg("Full Duplex\n"); |
120a5d0d JB |
2653 | } else { |
2654 | *duplex = HALF_DUPLEX; | |
675ad473 | 2655 | e_dbg(" Half Duplex\n"); |
120a5d0d JB |
2656 | } |
2657 | } else { | |
675ad473 | 2658 | e_dbg("1000 Mbs, Full Duplex\n"); |
120a5d0d JB |
2659 | *speed = SPEED_1000; |
2660 | *duplex = FULL_DUPLEX; | |
2661 | } | |
2662 | ||
6cfbd97b JK |
2663 | /* IGP01 PHY may advertise full duplex operation after speed downgrade |
2664 | * even if it is operating at half duplex. Here we set the duplex | |
2665 | * settings to match the duplex in the link partner's capabilities. | |
120a5d0d JB |
2666 | */ |
2667 | if (hw->phy_type == e1000_phy_igp && hw->speed_downgraded) { | |
2668 | ret_val = e1000_read_phy_reg(hw, PHY_AUTONEG_EXP, &phy_data); | |
2669 | if (ret_val) | |
2670 | return ret_val; | |
2671 | ||
2672 | if (!(phy_data & NWAY_ER_LP_NWAY_CAPS)) | |
2673 | *duplex = HALF_DUPLEX; | |
2674 | else { | |
2675 | ret_val = | |
2676 | e1000_read_phy_reg(hw, PHY_LP_ABILITY, &phy_data); | |
2677 | if (ret_val) | |
2678 | return ret_val; | |
2679 | if ((*speed == SPEED_100 | |
2680 | && !(phy_data & NWAY_LPAR_100TX_FD_CAPS)) | |
2681 | || (*speed == SPEED_10 | |
2682 | && !(phy_data & NWAY_LPAR_10T_FD_CAPS))) | |
2683 | *duplex = HALF_DUPLEX; | |
2684 | } | |
2685 | } | |
2686 | ||
2687 | return E1000_SUCCESS; | |
1da177e4 LT |
2688 | } |
2689 | ||
120a5d0d JB |
2690 | /** |
2691 | * e1000_wait_autoneg | |
2692 | * @hw: Struct containing variables accessed by shared code | |
2693 | * | |
2694 | * Blocks until autoneg completes or times out (~4.5 seconds) | |
2695 | */ | |
64798845 | 2696 | static s32 e1000_wait_autoneg(struct e1000_hw *hw) |
1da177e4 | 2697 | { |
120a5d0d JB |
2698 | s32 ret_val; |
2699 | u16 i; | |
2700 | u16 phy_data; | |
2701 | ||
675ad473 ET |
2702 | e_dbg("e1000_wait_autoneg"); |
2703 | e_dbg("Waiting for Auto-Neg to complete.\n"); | |
120a5d0d JB |
2704 | |
2705 | /* We will wait for autoneg to complete or 4.5 seconds to expire. */ | |
2706 | for (i = PHY_AUTO_NEG_TIME; i > 0; i--) { | |
2707 | /* Read the MII Status Register and wait for Auto-Neg | |
2708 | * Complete bit to be set. | |
2709 | */ | |
2710 | ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data); | |
2711 | if (ret_val) | |
2712 | return ret_val; | |
2713 | ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data); | |
2714 | if (ret_val) | |
2715 | return ret_val; | |
2716 | if (phy_data & MII_SR_AUTONEG_COMPLETE) { | |
2717 | return E1000_SUCCESS; | |
2718 | } | |
2719 | msleep(100); | |
2720 | } | |
2721 | return E1000_SUCCESS; | |
1da177e4 LT |
2722 | } |
2723 | ||
120a5d0d JB |
2724 | /** |
2725 | * e1000_raise_mdi_clk - Raises the Management Data Clock | |
2726 | * @hw: Struct containing variables accessed by shared code | |
2727 | * @ctrl: Device control register's current value | |
2728 | */ | |
64798845 | 2729 | static void e1000_raise_mdi_clk(struct e1000_hw *hw, u32 *ctrl) |
1da177e4 | 2730 | { |
6cfbd97b JK |
2731 | /* Raise the clock input to the Management Data Clock (by setting the |
2732 | * MDC bit), and then delay 10 microseconds. | |
120a5d0d JB |
2733 | */ |
2734 | ew32(CTRL, (*ctrl | E1000_CTRL_MDC)); | |
2735 | E1000_WRITE_FLUSH(); | |
2736 | udelay(10); | |
1da177e4 LT |
2737 | } |
2738 | ||
120a5d0d JB |
2739 | /** |
2740 | * e1000_lower_mdi_clk - Lowers the Management Data Clock | |
2741 | * @hw: Struct containing variables accessed by shared code | |
2742 | * @ctrl: Device control register's current value | |
2743 | */ | |
64798845 | 2744 | static void e1000_lower_mdi_clk(struct e1000_hw *hw, u32 *ctrl) |
1da177e4 | 2745 | { |
6cfbd97b JK |
2746 | /* Lower the clock input to the Management Data Clock (by clearing the |
2747 | * MDC bit), and then delay 10 microseconds. | |
120a5d0d JB |
2748 | */ |
2749 | ew32(CTRL, (*ctrl & ~E1000_CTRL_MDC)); | |
2750 | E1000_WRITE_FLUSH(); | |
2751 | udelay(10); | |
1da177e4 LT |
2752 | } |
2753 | ||
120a5d0d JB |
2754 | /** |
2755 | * e1000_shift_out_mdi_bits - Shifts data bits out to the PHY | |
2756 | * @hw: Struct containing variables accessed by shared code | |
2757 | * @data: Data to send out to the PHY | |
2758 | * @count: Number of bits to shift out | |
2759 | * | |
2760 | * Bits are shifted out in MSB to LSB order. | |
2761 | */ | |
64798845 | 2762 | static void e1000_shift_out_mdi_bits(struct e1000_hw *hw, u32 data, u16 count) |
1da177e4 | 2763 | { |
120a5d0d JB |
2764 | u32 ctrl; |
2765 | u32 mask; | |
2766 | ||
2767 | /* We need to shift "count" number of bits out to the PHY. So, the value | |
2768 | * in the "data" parameter will be shifted out to the PHY one bit at a | |
2769 | * time. In order to do this, "data" must be broken down into bits. | |
2770 | */ | |
2771 | mask = 0x01; | |
2772 | mask <<= (count - 1); | |
2773 | ||
2774 | ctrl = er32(CTRL); | |
2775 | ||
2776 | /* Set MDIO_DIR and MDC_DIR direction bits to be used as output pins. */ | |
2777 | ctrl |= (E1000_CTRL_MDIO_DIR | E1000_CTRL_MDC_DIR); | |
2778 | ||
2779 | while (mask) { | |
6cfbd97b JK |
2780 | /* A "1" is shifted out to the PHY by setting the MDIO bit to |
2781 | * "1" and then raising and lowering the Management Data Clock. | |
2782 | * A "0" is shifted out to the PHY by setting the MDIO bit to | |
2783 | * "0" and then raising and lowering the clock. | |
120a5d0d JB |
2784 | */ |
2785 | if (data & mask) | |
2786 | ctrl |= E1000_CTRL_MDIO; | |
2787 | else | |
2788 | ctrl &= ~E1000_CTRL_MDIO; | |
2789 | ||
2790 | ew32(CTRL, ctrl); | |
2791 | E1000_WRITE_FLUSH(); | |
2792 | ||
2793 | udelay(10); | |
2794 | ||
2795 | e1000_raise_mdi_clk(hw, &ctrl); | |
2796 | e1000_lower_mdi_clk(hw, &ctrl); | |
2797 | ||
2798 | mask = mask >> 1; | |
2799 | } | |
1da177e4 LT |
2800 | } |
2801 | ||
120a5d0d JB |
2802 | /** |
2803 | * e1000_shift_in_mdi_bits - Shifts data bits in from the PHY | |
2804 | * @hw: Struct containing variables accessed by shared code | |
2805 | * | |
2806 | * Bits are shifted in in MSB to LSB order. | |
2807 | */ | |
64798845 | 2808 | static u16 e1000_shift_in_mdi_bits(struct e1000_hw *hw) |
1da177e4 | 2809 | { |
120a5d0d JB |
2810 | u32 ctrl; |
2811 | u16 data = 0; | |
2812 | u8 i; | |
2813 | ||
2814 | /* In order to read a register from the PHY, we need to shift in a total | |
6cfbd97b JK |
2815 | * of 18 bits from the PHY. The first two bit (turnaround) times are |
2816 | * used to avoid contention on the MDIO pin when a read operation is | |
2817 | * performed. These two bits are ignored by us and thrown away. Bits are | |
2818 | * "shifted in" by raising the input to the Management Data Clock | |
2819 | * (setting the MDC bit), and then reading the value of the MDIO bit. | |
120a5d0d JB |
2820 | */ |
2821 | ctrl = er32(CTRL); | |
2822 | ||
6cfbd97b JK |
2823 | /* Clear MDIO_DIR (SWDPIO1) to indicate this bit is to be used as |
2824 | * input. | |
2825 | */ | |
120a5d0d JB |
2826 | ctrl &= ~E1000_CTRL_MDIO_DIR; |
2827 | ctrl &= ~E1000_CTRL_MDIO; | |
2828 | ||
2829 | ew32(CTRL, ctrl); | |
2830 | E1000_WRITE_FLUSH(); | |
2831 | ||
6cfbd97b JK |
2832 | /* Raise and Lower the clock before reading in the data. This accounts |
2833 | * for the turnaround bits. The first clock occurred when we clocked out | |
2834 | * the last bit of the Register Address. | |
120a5d0d JB |
2835 | */ |
2836 | e1000_raise_mdi_clk(hw, &ctrl); | |
2837 | e1000_lower_mdi_clk(hw, &ctrl); | |
2838 | ||
2839 | for (data = 0, i = 0; i < 16; i++) { | |
2840 | data = data << 1; | |
2841 | e1000_raise_mdi_clk(hw, &ctrl); | |
2842 | ctrl = er32(CTRL); | |
2843 | /* Check to see if we shifted in a "1". */ | |
2844 | if (ctrl & E1000_CTRL_MDIO) | |
2845 | data |= 1; | |
2846 | e1000_lower_mdi_clk(hw, &ctrl); | |
2847 | } | |
2848 | ||
2849 | e1000_raise_mdi_clk(hw, &ctrl); | |
2850 | e1000_lower_mdi_clk(hw, &ctrl); | |
2851 | ||
2852 | return data; | |
1da177e4 LT |
2853 | } |
2854 | ||
120a5d0d JB |
2855 | |
2856 | /** | |
2857 | * e1000_read_phy_reg - read a phy register | |
2858 | * @hw: Struct containing variables accessed by shared code | |
2859 | * @reg_addr: address of the PHY register to read | |
2860 | * | |
2861 | * Reads the value from a PHY register, if the value is on a specific non zero | |
2862 | * page, sets the page first. | |
2863 | */ | |
64798845 | 2864 | s32 e1000_read_phy_reg(struct e1000_hw *hw, u32 reg_addr, u16 *phy_data) |
1da177e4 | 2865 | { |
120a5d0d | 2866 | u32 ret_val; |
ac56558f | 2867 | unsigned long flags; |
1da177e4 | 2868 | |
675ad473 | 2869 | e_dbg("e1000_read_phy_reg"); |
1da177e4 | 2870 | |
ac56558f MB |
2871 | spin_lock_irqsave(&e1000_phy_lock, flags); |
2872 | ||
120a5d0d JB |
2873 | if ((hw->phy_type == e1000_phy_igp) && |
2874 | (reg_addr > MAX_PHY_MULTI_PAGE_REG)) { | |
2875 | ret_val = e1000_write_phy_reg_ex(hw, IGP01E1000_PHY_PAGE_SELECT, | |
2876 | (u16) reg_addr); | |
ac56558f MB |
2877 | if (ret_val) { |
2878 | spin_unlock_irqrestore(&e1000_phy_lock, flags); | |
120a5d0d | 2879 | return ret_val; |
ac56558f | 2880 | } |
120a5d0d JB |
2881 | } |
2882 | ||
2883 | ret_val = e1000_read_phy_reg_ex(hw, MAX_PHY_REG_ADDRESS & reg_addr, | |
2884 | phy_data); | |
ac56558f | 2885 | spin_unlock_irqrestore(&e1000_phy_lock, flags); |
1da177e4 | 2886 | |
120a5d0d | 2887 | return ret_val; |
1da177e4 LT |
2888 | } |
2889 | ||
64798845 JP |
2890 | static s32 e1000_read_phy_reg_ex(struct e1000_hw *hw, u32 reg_addr, |
2891 | u16 *phy_data) | |
1da177e4 | 2892 | { |
120a5d0d JB |
2893 | u32 i; |
2894 | u32 mdic = 0; | |
5377a416 | 2895 | const u32 phy_addr = (hw->mac_type == e1000_ce4100) ? hw->phy_addr : 1; |
120a5d0d | 2896 | |
675ad473 | 2897 | e_dbg("e1000_read_phy_reg_ex"); |
120a5d0d JB |
2898 | |
2899 | if (reg_addr > MAX_PHY_REG_ADDRESS) { | |
675ad473 | 2900 | e_dbg("PHY Address %d is out of range\n", reg_addr); |
120a5d0d JB |
2901 | return -E1000_ERR_PARAM; |
2902 | } | |
2903 | ||
2904 | if (hw->mac_type > e1000_82543) { | |
2905 | /* Set up Op-code, Phy Address, and register address in the MDI | |
6cfbd97b JK |
2906 | * Control register. The MAC will take care of interfacing with |
2907 | * the PHY to retrieve the desired data. | |
120a5d0d | 2908 | */ |
5377a416 DB |
2909 | if (hw->mac_type == e1000_ce4100) { |
2910 | mdic = ((reg_addr << E1000_MDIC_REG_SHIFT) | | |
2911 | (phy_addr << E1000_MDIC_PHY_SHIFT) | | |
2912 | (INTEL_CE_GBE_MDIC_OP_READ) | | |
2913 | (INTEL_CE_GBE_MDIC_GO)); | |
120a5d0d | 2914 | |
5377a416 | 2915 | writel(mdic, E1000_MDIO_CMD); |
120a5d0d | 2916 | |
5377a416 DB |
2917 | /* Poll the ready bit to see if the MDI read |
2918 | * completed | |
2919 | */ | |
2920 | for (i = 0; i < 64; i++) { | |
2921 | udelay(50); | |
2922 | mdic = readl(E1000_MDIO_CMD); | |
2923 | if (!(mdic & INTEL_CE_GBE_MDIC_GO)) | |
2924 | break; | |
2925 | } | |
2926 | ||
2927 | if (mdic & INTEL_CE_GBE_MDIC_GO) { | |
2928 | e_dbg("MDI Read did not complete\n"); | |
2929 | return -E1000_ERR_PHY; | |
2930 | } | |
2931 | ||
2932 | mdic = readl(E1000_MDIO_STS); | |
2933 | if (mdic & INTEL_CE_GBE_MDIC_READ_ERROR) { | |
2934 | e_dbg("MDI Read Error\n"); | |
2935 | return -E1000_ERR_PHY; | |
2936 | } | |
2937 | *phy_data = (u16) mdic; | |
2938 | } else { | |
2939 | mdic = ((reg_addr << E1000_MDIC_REG_SHIFT) | | |
2940 | (phy_addr << E1000_MDIC_PHY_SHIFT) | | |
2941 | (E1000_MDIC_OP_READ)); | |
2942 | ||
2943 | ew32(MDIC, mdic); | |
2944 | ||
2945 | /* Poll the ready bit to see if the MDI read | |
2946 | * completed | |
2947 | */ | |
2948 | for (i = 0; i < 64; i++) { | |
2949 | udelay(50); | |
2950 | mdic = er32(MDIC); | |
2951 | if (mdic & E1000_MDIC_READY) | |
2952 | break; | |
2953 | } | |
2954 | if (!(mdic & E1000_MDIC_READY)) { | |
2955 | e_dbg("MDI Read did not complete\n"); | |
2956 | return -E1000_ERR_PHY; | |
2957 | } | |
2958 | if (mdic & E1000_MDIC_ERROR) { | |
2959 | e_dbg("MDI Error\n"); | |
2960 | return -E1000_ERR_PHY; | |
2961 | } | |
2962 | *phy_data = (u16) mdic; | |
120a5d0d | 2963 | } |
120a5d0d | 2964 | } else { |
6cfbd97b JK |
2965 | /* We must first send a preamble through the MDIO pin to signal |
2966 | * the beginning of an MII instruction. This is done by sending | |
2967 | * 32 consecutive "1" bits. | |
120a5d0d JB |
2968 | */ |
2969 | e1000_shift_out_mdi_bits(hw, PHY_PREAMBLE, PHY_PREAMBLE_SIZE); | |
2970 | ||
2971 | /* Now combine the next few fields that are required for a read | |
2972 | * operation. We use this method instead of calling the | |
6cfbd97b JK |
2973 | * e1000_shift_out_mdi_bits routine five different times. The |
2974 | * format of a MII read instruction consists of a shift out of | |
2975 | * 14 bits and is defined as follows: | |
120a5d0d | 2976 | * <Preamble><SOF><Op Code><Phy Addr><Reg Addr> |
6cfbd97b JK |
2977 | * followed by a shift in of 18 bits. This first two bits |
2978 | * shifted in are TurnAround bits used to avoid contention on | |
2979 | * the MDIO pin when a READ operation is performed. These two | |
2980 | * bits are thrown away followed by a shift in of 16 bits which | |
2981 | * contains the desired data. | |
120a5d0d JB |
2982 | */ |
2983 | mdic = ((reg_addr) | (phy_addr << 5) | | |
2984 | (PHY_OP_READ << 10) | (PHY_SOF << 12)); | |
2985 | ||
2986 | e1000_shift_out_mdi_bits(hw, mdic, 14); | |
2987 | ||
6cfbd97b JK |
2988 | /* Now that we've shifted out the read command to the MII, we |
2989 | * need to "shift in" the 16-bit value (18 total bits) of the | |
2990 | * requested PHY register address. | |
120a5d0d JB |
2991 | */ |
2992 | *phy_data = e1000_shift_in_mdi_bits(hw); | |
2993 | } | |
2994 | return E1000_SUCCESS; | |
1da177e4 LT |
2995 | } |
2996 | ||
120a5d0d JB |
2997 | /** |
2998 | * e1000_write_phy_reg - write a phy register | |
2999 | * | |
3000 | * @hw: Struct containing variables accessed by shared code | |
3001 | * @reg_addr: address of the PHY register to write | |
3002 | * @data: data to write to the PHY | |
49ce9c2c | 3003 | * |
120a5d0d JB |
3004 | * Writes a value to a PHY register |
3005 | */ | |
64798845 | 3006 | s32 e1000_write_phy_reg(struct e1000_hw *hw, u32 reg_addr, u16 phy_data) |
1da177e4 | 3007 | { |
120a5d0d | 3008 | u32 ret_val; |
ac56558f | 3009 | unsigned long flags; |
1da177e4 | 3010 | |
675ad473 | 3011 | e_dbg("e1000_write_phy_reg"); |
1da177e4 | 3012 | |
ac56558f MB |
3013 | spin_lock_irqsave(&e1000_phy_lock, flags); |
3014 | ||
120a5d0d JB |
3015 | if ((hw->phy_type == e1000_phy_igp) && |
3016 | (reg_addr > MAX_PHY_MULTI_PAGE_REG)) { | |
3017 | ret_val = e1000_write_phy_reg_ex(hw, IGP01E1000_PHY_PAGE_SELECT, | |
3018 | (u16) reg_addr); | |
ac56558f MB |
3019 | if (ret_val) { |
3020 | spin_unlock_irqrestore(&e1000_phy_lock, flags); | |
120a5d0d | 3021 | return ret_val; |
ac56558f | 3022 | } |
120a5d0d | 3023 | } |
1da177e4 | 3024 | |
120a5d0d JB |
3025 | ret_val = e1000_write_phy_reg_ex(hw, MAX_PHY_REG_ADDRESS & reg_addr, |
3026 | phy_data); | |
ac56558f | 3027 | spin_unlock_irqrestore(&e1000_phy_lock, flags); |
1da177e4 | 3028 | |
120a5d0d | 3029 | return ret_val; |
1da177e4 LT |
3030 | } |
3031 | ||
64798845 JP |
3032 | static s32 e1000_write_phy_reg_ex(struct e1000_hw *hw, u32 reg_addr, |
3033 | u16 phy_data) | |
1da177e4 | 3034 | { |
120a5d0d JB |
3035 | u32 i; |
3036 | u32 mdic = 0; | |
5377a416 | 3037 | const u32 phy_addr = (hw->mac_type == e1000_ce4100) ? hw->phy_addr : 1; |
120a5d0d | 3038 | |
675ad473 | 3039 | e_dbg("e1000_write_phy_reg_ex"); |
120a5d0d JB |
3040 | |
3041 | if (reg_addr > MAX_PHY_REG_ADDRESS) { | |
675ad473 | 3042 | e_dbg("PHY Address %d is out of range\n", reg_addr); |
120a5d0d JB |
3043 | return -E1000_ERR_PARAM; |
3044 | } | |
3045 | ||
3046 | if (hw->mac_type > e1000_82543) { | |
5377a416 DB |
3047 | /* Set up Op-code, Phy Address, register address, and data |
3048 | * intended for the PHY register in the MDI Control register. | |
3049 | * The MAC will take care of interfacing with the PHY to send | |
3050 | * the desired data. | |
120a5d0d | 3051 | */ |
5377a416 DB |
3052 | if (hw->mac_type == e1000_ce4100) { |
3053 | mdic = (((u32) phy_data) | | |
3054 | (reg_addr << E1000_MDIC_REG_SHIFT) | | |
3055 | (phy_addr << E1000_MDIC_PHY_SHIFT) | | |
3056 | (INTEL_CE_GBE_MDIC_OP_WRITE) | | |
3057 | (INTEL_CE_GBE_MDIC_GO)); | |
120a5d0d | 3058 | |
5377a416 | 3059 | writel(mdic, E1000_MDIO_CMD); |
120a5d0d | 3060 | |
5377a416 DB |
3061 | /* Poll the ready bit to see if the MDI read |
3062 | * completed | |
3063 | */ | |
3064 | for (i = 0; i < 640; i++) { | |
3065 | udelay(5); | |
3066 | mdic = readl(E1000_MDIO_CMD); | |
3067 | if (!(mdic & INTEL_CE_GBE_MDIC_GO)) | |
3068 | break; | |
3069 | } | |
3070 | if (mdic & INTEL_CE_GBE_MDIC_GO) { | |
3071 | e_dbg("MDI Write did not complete\n"); | |
3072 | return -E1000_ERR_PHY; | |
3073 | } | |
3074 | } else { | |
3075 | mdic = (((u32) phy_data) | | |
3076 | (reg_addr << E1000_MDIC_REG_SHIFT) | | |
3077 | (phy_addr << E1000_MDIC_PHY_SHIFT) | | |
3078 | (E1000_MDIC_OP_WRITE)); | |
3079 | ||
3080 | ew32(MDIC, mdic); | |
3081 | ||
3082 | /* Poll the ready bit to see if the MDI read | |
3083 | * completed | |
3084 | */ | |
3085 | for (i = 0; i < 641; i++) { | |
3086 | udelay(5); | |
3087 | mdic = er32(MDIC); | |
3088 | if (mdic & E1000_MDIC_READY) | |
3089 | break; | |
3090 | } | |
3091 | if (!(mdic & E1000_MDIC_READY)) { | |
3092 | e_dbg("MDI Write did not complete\n"); | |
3093 | return -E1000_ERR_PHY; | |
3094 | } | |
120a5d0d JB |
3095 | } |
3096 | } else { | |
6cfbd97b JK |
3097 | /* We'll need to use the SW defined pins to shift the write |
3098 | * command out to the PHY. We first send a preamble to the PHY | |
3099 | * to signal the beginning of the MII instruction. This is done | |
3100 | * by sending 32 consecutive "1" bits. | |
120a5d0d JB |
3101 | */ |
3102 | e1000_shift_out_mdi_bits(hw, PHY_PREAMBLE, PHY_PREAMBLE_SIZE); | |
3103 | ||
6cfbd97b JK |
3104 | /* Now combine the remaining required fields that will indicate |
3105 | * a write operation. We use this method instead of calling the | |
3106 | * e1000_shift_out_mdi_bits routine for each field in the | |
3107 | * command. The format of a MII write instruction is as follows: | |
3108 | * <Preamble><SOF><OpCode><PhyAddr><RegAddr><Turnaround><Data>. | |
120a5d0d JB |
3109 | */ |
3110 | mdic = ((PHY_TURNAROUND) | (reg_addr << 2) | (phy_addr << 7) | | |
3111 | (PHY_OP_WRITE << 12) | (PHY_SOF << 14)); | |
3112 | mdic <<= 16; | |
3113 | mdic |= (u32) phy_data; | |
3114 | ||
3115 | e1000_shift_out_mdi_bits(hw, mdic, 32); | |
3116 | } | |
3117 | ||
3118 | return E1000_SUCCESS; | |
1da177e4 LT |
3119 | } |
3120 | ||
120a5d0d JB |
3121 | /** |
3122 | * e1000_phy_hw_reset - reset the phy, hardware style | |
3123 | * @hw: Struct containing variables accessed by shared code | |
3124 | * | |
3125 | * Returns the PHY to the power-on reset state | |
3126 | */ | |
64798845 | 3127 | s32 e1000_phy_hw_reset(struct e1000_hw *hw) |
1da177e4 | 3128 | { |
120a5d0d JB |
3129 | u32 ctrl, ctrl_ext; |
3130 | u32 led_ctrl; | |
120a5d0d | 3131 | |
675ad473 | 3132 | e_dbg("e1000_phy_hw_reset"); |
120a5d0d | 3133 | |
675ad473 | 3134 | e_dbg("Resetting Phy...\n"); |
120a5d0d JB |
3135 | |
3136 | if (hw->mac_type > e1000_82543) { | |
6cfbd97b JK |
3137 | /* Read the device control register and assert the |
3138 | * E1000_CTRL_PHY_RST bit. Then, take it out of reset. | |
120a5d0d | 3139 | * For e1000 hardware, we delay for 10ms between the assert |
6cfbd97b | 3140 | * and de-assert. |
120a5d0d JB |
3141 | */ |
3142 | ctrl = er32(CTRL); | |
3143 | ew32(CTRL, ctrl | E1000_CTRL_PHY_RST); | |
3144 | E1000_WRITE_FLUSH(); | |
3145 | ||
3146 | msleep(10); | |
3147 | ||
3148 | ew32(CTRL, ctrl); | |
3149 | E1000_WRITE_FLUSH(); | |
3150 | ||
3151 | } else { | |
6cfbd97b JK |
3152 | /* Read the Extended Device Control Register, assert the |
3153 | * PHY_RESET_DIR bit to put the PHY into reset. Then, take it | |
3154 | * out of reset. | |
120a5d0d JB |
3155 | */ |
3156 | ctrl_ext = er32(CTRL_EXT); | |
3157 | ctrl_ext |= E1000_CTRL_EXT_SDP4_DIR; | |
3158 | ctrl_ext &= ~E1000_CTRL_EXT_SDP4_DATA; | |
3159 | ew32(CTRL_EXT, ctrl_ext); | |
3160 | E1000_WRITE_FLUSH(); | |
3161 | msleep(10); | |
3162 | ctrl_ext |= E1000_CTRL_EXT_SDP4_DATA; | |
3163 | ew32(CTRL_EXT, ctrl_ext); | |
3164 | E1000_WRITE_FLUSH(); | |
3165 | } | |
3166 | udelay(150); | |
3167 | ||
3168 | if ((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_82547)) { | |
3169 | /* Configure activity LED after PHY reset */ | |
3170 | led_ctrl = er32(LEDCTL); | |
3171 | led_ctrl &= IGP_ACTIVITY_LED_MASK; | |
3172 | led_ctrl |= (IGP_ACTIVITY_LED_ENABLE | IGP_LED3_MODE); | |
3173 | ew32(LEDCTL, led_ctrl); | |
3174 | } | |
3175 | ||
3176 | /* Wait for FW to finish PHY configuration. */ | |
c4dc4d10 | 3177 | return e1000_get_phy_cfg_done(hw); |
1da177e4 LT |
3178 | } |
3179 | ||
120a5d0d JB |
3180 | /** |
3181 | * e1000_phy_reset - reset the phy to commit settings | |
3182 | * @hw: Struct containing variables accessed by shared code | |
3183 | * | |
3184 | * Resets the PHY | |
3185 | * Sets bit 15 of the MII Control register | |
3186 | */ | |
64798845 | 3187 | s32 e1000_phy_reset(struct e1000_hw *hw) |
1da177e4 | 3188 | { |
120a5d0d JB |
3189 | s32 ret_val; |
3190 | u16 phy_data; | |
3191 | ||
675ad473 | 3192 | e_dbg("e1000_phy_reset"); |
120a5d0d JB |
3193 | |
3194 | switch (hw->phy_type) { | |
3195 | case e1000_phy_igp: | |
3196 | ret_val = e1000_phy_hw_reset(hw); | |
3197 | if (ret_val) | |
3198 | return ret_val; | |
3199 | break; | |
3200 | default: | |
3201 | ret_val = e1000_read_phy_reg(hw, PHY_CTRL, &phy_data); | |
3202 | if (ret_val) | |
3203 | return ret_val; | |
3204 | ||
3205 | phy_data |= MII_CR_RESET; | |
3206 | ret_val = e1000_write_phy_reg(hw, PHY_CTRL, phy_data); | |
3207 | if (ret_val) | |
3208 | return ret_val; | |
3209 | ||
3210 | udelay(1); | |
3211 | break; | |
3212 | } | |
3213 | ||
3214 | if (hw->phy_type == e1000_phy_igp) | |
3215 | e1000_phy_init_script(hw); | |
3216 | ||
3217 | return E1000_SUCCESS; | |
1da177e4 LT |
3218 | } |
3219 | ||
120a5d0d JB |
3220 | /** |
3221 | * e1000_detect_gig_phy - check the phy type | |
3222 | * @hw: Struct containing variables accessed by shared code | |
3223 | * | |
3224 | * Probes the expected PHY address for known PHY IDs | |
3225 | */ | |
64798845 | 3226 | static s32 e1000_detect_gig_phy(struct e1000_hw *hw) |
1da177e4 | 3227 | { |
120a5d0d JB |
3228 | s32 phy_init_status, ret_val; |
3229 | u16 phy_id_high, phy_id_low; | |
3230 | bool match = false; | |
3231 | ||
675ad473 | 3232 | e_dbg("e1000_detect_gig_phy"); |
120a5d0d JB |
3233 | |
3234 | if (hw->phy_id != 0) | |
3235 | return E1000_SUCCESS; | |
3236 | ||
3237 | /* Read the PHY ID Registers to identify which PHY is onboard. */ | |
3238 | ret_val = e1000_read_phy_reg(hw, PHY_ID1, &phy_id_high); | |
3239 | if (ret_val) | |
3240 | return ret_val; | |
3241 | ||
3242 | hw->phy_id = (u32) (phy_id_high << 16); | |
3243 | udelay(20); | |
3244 | ret_val = e1000_read_phy_reg(hw, PHY_ID2, &phy_id_low); | |
3245 | if (ret_val) | |
3246 | return ret_val; | |
3247 | ||
3248 | hw->phy_id |= (u32) (phy_id_low & PHY_REVISION_MASK); | |
3249 | hw->phy_revision = (u32) phy_id_low & ~PHY_REVISION_MASK; | |
3250 | ||
3251 | switch (hw->mac_type) { | |
3252 | case e1000_82543: | |
3253 | if (hw->phy_id == M88E1000_E_PHY_ID) | |
3254 | match = true; | |
3255 | break; | |
3256 | case e1000_82544: | |
3257 | if (hw->phy_id == M88E1000_I_PHY_ID) | |
3258 | match = true; | |
3259 | break; | |
3260 | case e1000_82540: | |
3261 | case e1000_82545: | |
3262 | case e1000_82545_rev_3: | |
3263 | case e1000_82546: | |
3264 | case e1000_82546_rev_3: | |
3265 | if (hw->phy_id == M88E1011_I_PHY_ID) | |
3266 | match = true; | |
3267 | break; | |
5377a416 DB |
3268 | case e1000_ce4100: |
3269 | if ((hw->phy_id == RTL8211B_PHY_ID) || | |
cf8e09b0 FF |
3270 | (hw->phy_id == RTL8201N_PHY_ID) || |
3271 | (hw->phy_id == M88E1118_E_PHY_ID)) | |
5377a416 DB |
3272 | match = true; |
3273 | break; | |
120a5d0d JB |
3274 | case e1000_82541: |
3275 | case e1000_82541_rev_2: | |
3276 | case e1000_82547: | |
3277 | case e1000_82547_rev_2: | |
3278 | if (hw->phy_id == IGP01E1000_I_PHY_ID) | |
3279 | match = true; | |
3280 | break; | |
3281 | default: | |
675ad473 | 3282 | e_dbg("Invalid MAC type %d\n", hw->mac_type); |
120a5d0d JB |
3283 | return -E1000_ERR_CONFIG; |
3284 | } | |
3285 | phy_init_status = e1000_set_phy_type(hw); | |
3286 | ||
3287 | if ((match) && (phy_init_status == E1000_SUCCESS)) { | |
675ad473 | 3288 | e_dbg("PHY ID 0x%X detected\n", hw->phy_id); |
120a5d0d JB |
3289 | return E1000_SUCCESS; |
3290 | } | |
675ad473 | 3291 | e_dbg("Invalid PHY ID 0x%X\n", hw->phy_id); |
120a5d0d | 3292 | return -E1000_ERR_PHY; |
1da177e4 LT |
3293 | } |
3294 | ||
120a5d0d JB |
3295 | /** |
3296 | * e1000_phy_reset_dsp - reset DSP | |
3297 | * @hw: Struct containing variables accessed by shared code | |
3298 | * | |
3299 | * Resets the PHY's DSP | |
3300 | */ | |
64798845 | 3301 | static s32 e1000_phy_reset_dsp(struct e1000_hw *hw) |
1da177e4 | 3302 | { |
120a5d0d | 3303 | s32 ret_val; |
675ad473 | 3304 | e_dbg("e1000_phy_reset_dsp"); |
120a5d0d JB |
3305 | |
3306 | do { | |
3307 | ret_val = e1000_write_phy_reg(hw, 29, 0x001d); | |
3308 | if (ret_val) | |
3309 | break; | |
3310 | ret_val = e1000_write_phy_reg(hw, 30, 0x00c1); | |
3311 | if (ret_val) | |
3312 | break; | |
3313 | ret_val = e1000_write_phy_reg(hw, 30, 0x0000); | |
3314 | if (ret_val) | |
3315 | break; | |
3316 | ret_val = E1000_SUCCESS; | |
3317 | } while (0); | |
3318 | ||
3319 | return ret_val; | |
1da177e4 LT |
3320 | } |
3321 | ||
120a5d0d JB |
3322 | /** |
3323 | * e1000_phy_igp_get_info - get igp specific registers | |
3324 | * @hw: Struct containing variables accessed by shared code | |
3325 | * @phy_info: PHY information structure | |
3326 | * | |
3327 | * Get PHY information from various PHY registers for igp PHY only. | |
3328 | */ | |
64798845 JP |
3329 | static s32 e1000_phy_igp_get_info(struct e1000_hw *hw, |
3330 | struct e1000_phy_info *phy_info) | |
1da177e4 | 3331 | { |
120a5d0d JB |
3332 | s32 ret_val; |
3333 | u16 phy_data, min_length, max_length, average; | |
3334 | e1000_rev_polarity polarity; | |
3335 | ||
675ad473 | 3336 | e_dbg("e1000_phy_igp_get_info"); |
120a5d0d JB |
3337 | |
3338 | /* The downshift status is checked only once, after link is established, | |
6cfbd97b JK |
3339 | * and it stored in the hw->speed_downgraded parameter. |
3340 | */ | |
120a5d0d JB |
3341 | phy_info->downshift = (e1000_downshift) hw->speed_downgraded; |
3342 | ||
3343 | /* IGP01E1000 does not need to support it. */ | |
3344 | phy_info->extended_10bt_distance = e1000_10bt_ext_dist_enable_normal; | |
3345 | ||
3346 | /* IGP01E1000 always correct polarity reversal */ | |
3347 | phy_info->polarity_correction = e1000_polarity_reversal_enabled; | |
3348 | ||
3349 | /* Check polarity status */ | |
3350 | ret_val = e1000_check_polarity(hw, &polarity); | |
3351 | if (ret_val) | |
3352 | return ret_val; | |
3353 | ||
3354 | phy_info->cable_polarity = polarity; | |
3355 | ||
3356 | ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_STATUS, &phy_data); | |
3357 | if (ret_val) | |
3358 | return ret_val; | |
3359 | ||
3360 | phy_info->mdix_mode = | |
3361 | (e1000_auto_x_mode) ((phy_data & IGP01E1000_PSSR_MDIX) >> | |
3362 | IGP01E1000_PSSR_MDIX_SHIFT); | |
3363 | ||
3364 | if ((phy_data & IGP01E1000_PSSR_SPEED_MASK) == | |
3365 | IGP01E1000_PSSR_SPEED_1000MBPS) { | |
6cfbd97b JK |
3366 | /* Local/Remote Receiver Information are only valid @ 1000 |
3367 | * Mbps | |
3368 | */ | |
120a5d0d JB |
3369 | ret_val = e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_data); |
3370 | if (ret_val) | |
3371 | return ret_val; | |
3372 | ||
3373 | phy_info->local_rx = ((phy_data & SR_1000T_LOCAL_RX_STATUS) >> | |
3374 | SR_1000T_LOCAL_RX_STATUS_SHIFT) ? | |
3375 | e1000_1000t_rx_status_ok : e1000_1000t_rx_status_not_ok; | |
3376 | phy_info->remote_rx = ((phy_data & SR_1000T_REMOTE_RX_STATUS) >> | |
3377 | SR_1000T_REMOTE_RX_STATUS_SHIFT) ? | |
3378 | e1000_1000t_rx_status_ok : e1000_1000t_rx_status_not_ok; | |
3379 | ||
3380 | /* Get cable length */ | |
3381 | ret_val = e1000_get_cable_length(hw, &min_length, &max_length); | |
3382 | if (ret_val) | |
3383 | return ret_val; | |
3384 | ||
3385 | /* Translate to old method */ | |
3386 | average = (max_length + min_length) / 2; | |
3387 | ||
3388 | if (average <= e1000_igp_cable_length_50) | |
3389 | phy_info->cable_length = e1000_cable_length_50; | |
3390 | else if (average <= e1000_igp_cable_length_80) | |
3391 | phy_info->cable_length = e1000_cable_length_50_80; | |
3392 | else if (average <= e1000_igp_cable_length_110) | |
3393 | phy_info->cable_length = e1000_cable_length_80_110; | |
3394 | else if (average <= e1000_igp_cable_length_140) | |
3395 | phy_info->cable_length = e1000_cable_length_110_140; | |
3396 | else | |
3397 | phy_info->cable_length = e1000_cable_length_140; | |
3398 | } | |
1da177e4 | 3399 | |
120a5d0d JB |
3400 | return E1000_SUCCESS; |
3401 | } | |
d37ea5d5 | 3402 | |
120a5d0d JB |
3403 | /** |
3404 | * e1000_phy_m88_get_info - get m88 specific registers | |
3405 | * @hw: Struct containing variables accessed by shared code | |
3406 | * @phy_info: PHY information structure | |
3407 | * | |
3408 | * Get PHY information from various PHY registers for m88 PHY only. | |
3409 | */ | |
64798845 JP |
3410 | static s32 e1000_phy_m88_get_info(struct e1000_hw *hw, |
3411 | struct e1000_phy_info *phy_info) | |
1da177e4 | 3412 | { |
120a5d0d JB |
3413 | s32 ret_val; |
3414 | u16 phy_data; | |
3415 | e1000_rev_polarity polarity; | |
3416 | ||
675ad473 | 3417 | e_dbg("e1000_phy_m88_get_info"); |
120a5d0d JB |
3418 | |
3419 | /* The downshift status is checked only once, after link is established, | |
6cfbd97b JK |
3420 | * and it stored in the hw->speed_downgraded parameter. |
3421 | */ | |
120a5d0d JB |
3422 | phy_info->downshift = (e1000_downshift) hw->speed_downgraded; |
3423 | ||
3424 | ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data); | |
3425 | if (ret_val) | |
3426 | return ret_val; | |
3427 | ||
3428 | phy_info->extended_10bt_distance = | |
3429 | ((phy_data & M88E1000_PSCR_10BT_EXT_DIST_ENABLE) >> | |
3430 | M88E1000_PSCR_10BT_EXT_DIST_ENABLE_SHIFT) ? | |
3431 | e1000_10bt_ext_dist_enable_lower : | |
3432 | e1000_10bt_ext_dist_enable_normal; | |
3433 | ||
3434 | phy_info->polarity_correction = | |
3435 | ((phy_data & M88E1000_PSCR_POLARITY_REVERSAL) >> | |
3436 | M88E1000_PSCR_POLARITY_REVERSAL_SHIFT) ? | |
3437 | e1000_polarity_reversal_disabled : e1000_polarity_reversal_enabled; | |
3438 | ||
3439 | /* Check polarity status */ | |
3440 | ret_val = e1000_check_polarity(hw, &polarity); | |
3441 | if (ret_val) | |
3442 | return ret_val; | |
3443 | phy_info->cable_polarity = polarity; | |
3444 | ||
3445 | ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS, &phy_data); | |
3446 | if (ret_val) | |
3447 | return ret_val; | |
3448 | ||
3449 | phy_info->mdix_mode = | |
3450 | (e1000_auto_x_mode) ((phy_data & M88E1000_PSSR_MDIX) >> | |
3451 | M88E1000_PSSR_MDIX_SHIFT); | |
3452 | ||
3453 | if ((phy_data & M88E1000_PSSR_SPEED) == M88E1000_PSSR_1000MBS) { | |
3454 | /* Cable Length Estimation and Local/Remote Receiver Information | |
3455 | * are only valid at 1000 Mbps. | |
3456 | */ | |
3457 | phy_info->cable_length = | |
3458 | (e1000_cable_length) ((phy_data & | |
3459 | M88E1000_PSSR_CABLE_LENGTH) >> | |
3460 | M88E1000_PSSR_CABLE_LENGTH_SHIFT); | |
3461 | ||
3462 | ret_val = e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_data); | |
3463 | if (ret_val) | |
3464 | return ret_val; | |
3465 | ||
3466 | phy_info->local_rx = ((phy_data & SR_1000T_LOCAL_RX_STATUS) >> | |
3467 | SR_1000T_LOCAL_RX_STATUS_SHIFT) ? | |
3468 | e1000_1000t_rx_status_ok : e1000_1000t_rx_status_not_ok; | |
3469 | phy_info->remote_rx = ((phy_data & SR_1000T_REMOTE_RX_STATUS) >> | |
3470 | SR_1000T_REMOTE_RX_STATUS_SHIFT) ? | |
3471 | e1000_1000t_rx_status_ok : e1000_1000t_rx_status_not_ok; | |
3472 | ||
3473 | } | |
3474 | ||
3475 | return E1000_SUCCESS; | |
1da177e4 LT |
3476 | } |
3477 | ||
120a5d0d JB |
3478 | /** |
3479 | * e1000_phy_get_info - request phy info | |
3480 | * @hw: Struct containing variables accessed by shared code | |
3481 | * @phy_info: PHY information structure | |
3482 | * | |
3483 | * Get PHY information from various PHY registers | |
3484 | */ | |
64798845 | 3485 | s32 e1000_phy_get_info(struct e1000_hw *hw, struct e1000_phy_info *phy_info) |
1da177e4 | 3486 | { |
120a5d0d JB |
3487 | s32 ret_val; |
3488 | u16 phy_data; | |
3489 | ||
675ad473 | 3490 | e_dbg("e1000_phy_get_info"); |
120a5d0d JB |
3491 | |
3492 | phy_info->cable_length = e1000_cable_length_undefined; | |
3493 | phy_info->extended_10bt_distance = e1000_10bt_ext_dist_enable_undefined; | |
3494 | phy_info->cable_polarity = e1000_rev_polarity_undefined; | |
3495 | phy_info->downshift = e1000_downshift_undefined; | |
3496 | phy_info->polarity_correction = e1000_polarity_reversal_undefined; | |
3497 | phy_info->mdix_mode = e1000_auto_x_mode_undefined; | |
3498 | phy_info->local_rx = e1000_1000t_rx_status_undefined; | |
3499 | phy_info->remote_rx = e1000_1000t_rx_status_undefined; | |
3500 | ||
3501 | if (hw->media_type != e1000_media_type_copper) { | |
675ad473 | 3502 | e_dbg("PHY info is only valid for copper media\n"); |
120a5d0d JB |
3503 | return -E1000_ERR_CONFIG; |
3504 | } | |
3505 | ||
3506 | ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data); | |
3507 | if (ret_val) | |
3508 | return ret_val; | |
3509 | ||
3510 | ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data); | |
3511 | if (ret_val) | |
3512 | return ret_val; | |
3513 | ||
3514 | if ((phy_data & MII_SR_LINK_STATUS) != MII_SR_LINK_STATUS) { | |
675ad473 | 3515 | e_dbg("PHY info is only valid if link is up\n"); |
120a5d0d JB |
3516 | return -E1000_ERR_CONFIG; |
3517 | } | |
3518 | ||
3519 | if (hw->phy_type == e1000_phy_igp) | |
3520 | return e1000_phy_igp_get_info(hw, phy_info); | |
5377a416 DB |
3521 | else if ((hw->phy_type == e1000_phy_8211) || |
3522 | (hw->phy_type == e1000_phy_8201)) | |
3523 | return E1000_SUCCESS; | |
120a5d0d JB |
3524 | else |
3525 | return e1000_phy_m88_get_info(hw, phy_info); | |
1da177e4 LT |
3526 | } |
3527 | ||
64798845 | 3528 | s32 e1000_validate_mdi_setting(struct e1000_hw *hw) |
1da177e4 | 3529 | { |
675ad473 | 3530 | e_dbg("e1000_validate_mdi_settings"); |
1da177e4 | 3531 | |
120a5d0d | 3532 | if (!hw->autoneg && (hw->mdix == 0 || hw->mdix == 3)) { |
675ad473 | 3533 | e_dbg("Invalid MDI setting detected\n"); |
120a5d0d JB |
3534 | hw->mdix = 1; |
3535 | return -E1000_ERR_CONFIG; | |
3536 | } | |
3537 | return E1000_SUCCESS; | |
3538 | } | |
1da177e4 | 3539 | |
120a5d0d JB |
3540 | /** |
3541 | * e1000_init_eeprom_params - initialize sw eeprom vars | |
3542 | * @hw: Struct containing variables accessed by shared code | |
3543 | * | |
1da177e4 | 3544 | * Sets up eeprom variables in the hw struct. Must be called after mac_type |
1532ecea | 3545 | * is configured. |
120a5d0d | 3546 | */ |
64798845 | 3547 | s32 e1000_init_eeprom_params(struct e1000_hw *hw) |
1da177e4 | 3548 | { |
120a5d0d JB |
3549 | struct e1000_eeprom_info *eeprom = &hw->eeprom; |
3550 | u32 eecd = er32(EECD); | |
3551 | s32 ret_val = E1000_SUCCESS; | |
3552 | u16 eeprom_size; | |
3553 | ||
675ad473 | 3554 | e_dbg("e1000_init_eeprom_params"); |
120a5d0d JB |
3555 | |
3556 | switch (hw->mac_type) { | |
3557 | case e1000_82542_rev2_0: | |
3558 | case e1000_82542_rev2_1: | |
3559 | case e1000_82543: | |
3560 | case e1000_82544: | |
3561 | eeprom->type = e1000_eeprom_microwire; | |
3562 | eeprom->word_size = 64; | |
3563 | eeprom->opcode_bits = 3; | |
3564 | eeprom->address_bits = 6; | |
3565 | eeprom->delay_usec = 50; | |
120a5d0d JB |
3566 | break; |
3567 | case e1000_82540: | |
3568 | case e1000_82545: | |
3569 | case e1000_82545_rev_3: | |
3570 | case e1000_82546: | |
3571 | case e1000_82546_rev_3: | |
3572 | eeprom->type = e1000_eeprom_microwire; | |
3573 | eeprom->opcode_bits = 3; | |
3574 | eeprom->delay_usec = 50; | |
3575 | if (eecd & E1000_EECD_SIZE) { | |
3576 | eeprom->word_size = 256; | |
3577 | eeprom->address_bits = 8; | |
3578 | } else { | |
3579 | eeprom->word_size = 64; | |
3580 | eeprom->address_bits = 6; | |
3581 | } | |
120a5d0d JB |
3582 | break; |
3583 | case e1000_82541: | |
3584 | case e1000_82541_rev_2: | |
3585 | case e1000_82547: | |
3586 | case e1000_82547_rev_2: | |
3587 | if (eecd & E1000_EECD_TYPE) { | |
3588 | eeprom->type = e1000_eeprom_spi; | |
3589 | eeprom->opcode_bits = 8; | |
3590 | eeprom->delay_usec = 1; | |
3591 | if (eecd & E1000_EECD_ADDR_BITS) { | |
3592 | eeprom->page_size = 32; | |
3593 | eeprom->address_bits = 16; | |
3594 | } else { | |
3595 | eeprom->page_size = 8; | |
3596 | eeprom->address_bits = 8; | |
3597 | } | |
3598 | } else { | |
3599 | eeprom->type = e1000_eeprom_microwire; | |
3600 | eeprom->opcode_bits = 3; | |
3601 | eeprom->delay_usec = 50; | |
3602 | if (eecd & E1000_EECD_ADDR_BITS) { | |
3603 | eeprom->word_size = 256; | |
3604 | eeprom->address_bits = 8; | |
3605 | } else { | |
3606 | eeprom->word_size = 64; | |
3607 | eeprom->address_bits = 6; | |
3608 | } | |
3609 | } | |
120a5d0d JB |
3610 | break; |
3611 | default: | |
3612 | break; | |
3613 | } | |
3614 | ||
3615 | if (eeprom->type == e1000_eeprom_spi) { | |
6cfbd97b JK |
3616 | /* eeprom_size will be an enum [0..8] that maps to eeprom sizes |
3617 | * 128B to 32KB (incremented by powers of 2). | |
120a5d0d JB |
3618 | */ |
3619 | /* Set to default value for initial eeprom read. */ | |
3620 | eeprom->word_size = 64; | |
3621 | ret_val = e1000_read_eeprom(hw, EEPROM_CFG, 1, &eeprom_size); | |
3622 | if (ret_val) | |
3623 | return ret_val; | |
3624 | eeprom_size = | |
3625 | (eeprom_size & EEPROM_SIZE_MASK) >> EEPROM_SIZE_SHIFT; | |
3626 | /* 256B eeprom size was not supported in earlier hardware, so we | |
6cfbd97b JK |
3627 | * bump eeprom_size up one to ensure that "1" (which maps to |
3628 | * 256B) is never the result used in the shifting logic below. | |
3629 | */ | |
120a5d0d JB |
3630 | if (eeprom_size) |
3631 | eeprom_size++; | |
3632 | ||
3633 | eeprom->word_size = 1 << (eeprom_size + EEPROM_WORD_SIZE_SHIFT); | |
3634 | } | |
3635 | return ret_val; | |
1da177e4 LT |
3636 | } |
3637 | ||
120a5d0d JB |
3638 | /** |
3639 | * e1000_raise_ee_clk - Raises the EEPROM's clock input. | |
3640 | * @hw: Struct containing variables accessed by shared code | |
3641 | * @eecd: EECD's current value | |
3642 | */ | |
64798845 | 3643 | static void e1000_raise_ee_clk(struct e1000_hw *hw, u32 *eecd) |
1da177e4 | 3644 | { |
120a5d0d JB |
3645 | /* Raise the clock input to the EEPROM (by setting the SK bit), and then |
3646 | * wait <delay> microseconds. | |
3647 | */ | |
3648 | *eecd = *eecd | E1000_EECD_SK; | |
3649 | ew32(EECD, *eecd); | |
3650 | E1000_WRITE_FLUSH(); | |
3651 | udelay(hw->eeprom.delay_usec); | |
1da177e4 LT |
3652 | } |
3653 | ||
120a5d0d JB |
3654 | /** |
3655 | * e1000_lower_ee_clk - Lowers the EEPROM's clock input. | |
3656 | * @hw: Struct containing variables accessed by shared code | |
3657 | * @eecd: EECD's current value | |
3658 | */ | |
64798845 | 3659 | static void e1000_lower_ee_clk(struct e1000_hw *hw, u32 *eecd) |
1da177e4 | 3660 | { |
6cfbd97b JK |
3661 | /* Lower the clock input to the EEPROM (by clearing the SK bit), and |
3662 | * then wait 50 microseconds. | |
120a5d0d JB |
3663 | */ |
3664 | *eecd = *eecd & ~E1000_EECD_SK; | |
3665 | ew32(EECD, *eecd); | |
3666 | E1000_WRITE_FLUSH(); | |
3667 | udelay(hw->eeprom.delay_usec); | |
1da177e4 LT |
3668 | } |
3669 | ||
120a5d0d JB |
3670 | /** |
3671 | * e1000_shift_out_ee_bits - Shift data bits out to the EEPROM. | |
3672 | * @hw: Struct containing variables accessed by shared code | |
3673 | * @data: data to send to the EEPROM | |
3674 | * @count: number of bits to shift out | |
3675 | */ | |
64798845 | 3676 | static void e1000_shift_out_ee_bits(struct e1000_hw *hw, u16 data, u16 count) |
1da177e4 | 3677 | { |
120a5d0d JB |
3678 | struct e1000_eeprom_info *eeprom = &hw->eeprom; |
3679 | u32 eecd; | |
3680 | u32 mask; | |
3681 | ||
3682 | /* We need to shift "count" bits out to the EEPROM. So, value in the | |
3683 | * "data" parameter will be shifted out to the EEPROM one bit at a time. | |
3684 | * In order to do this, "data" must be broken down into bits. | |
3685 | */ | |
3686 | mask = 0x01 << (count - 1); | |
3687 | eecd = er32(EECD); | |
3688 | if (eeprom->type == e1000_eeprom_microwire) { | |
3689 | eecd &= ~E1000_EECD_DO; | |
3690 | } else if (eeprom->type == e1000_eeprom_spi) { | |
3691 | eecd |= E1000_EECD_DO; | |
3692 | } | |
3693 | do { | |
6cfbd97b JK |
3694 | /* A "1" is shifted out to the EEPROM by setting bit "DI" to a |
3695 | * "1", and then raising and then lowering the clock (the SK bit | |
3696 | * controls the clock input to the EEPROM). A "0" is shifted | |
3697 | * out to the EEPROM by setting "DI" to "0" and then raising and | |
3698 | * then lowering the clock. | |
120a5d0d JB |
3699 | */ |
3700 | eecd &= ~E1000_EECD_DI; | |
3701 | ||
3702 | if (data & mask) | |
3703 | eecd |= E1000_EECD_DI; | |
3704 | ||
3705 | ew32(EECD, eecd); | |
3706 | E1000_WRITE_FLUSH(); | |
3707 | ||
3708 | udelay(eeprom->delay_usec); | |
3709 | ||
3710 | e1000_raise_ee_clk(hw, &eecd); | |
3711 | e1000_lower_ee_clk(hw, &eecd); | |
3712 | ||
3713 | mask = mask >> 1; | |
3714 | ||
3715 | } while (mask); | |
3716 | ||
3717 | /* We leave the "DI" bit set to "0" when we leave this routine. */ | |
3718 | eecd &= ~E1000_EECD_DI; | |
3719 | ew32(EECD, eecd); | |
1da177e4 LT |
3720 | } |
3721 | ||
120a5d0d JB |
3722 | /** |
3723 | * e1000_shift_in_ee_bits - Shift data bits in from the EEPROM | |
3724 | * @hw: Struct containing variables accessed by shared code | |
3725 | * @count: number of bits to shift in | |
3726 | */ | |
64798845 | 3727 | static u16 e1000_shift_in_ee_bits(struct e1000_hw *hw, u16 count) |
1da177e4 | 3728 | { |
120a5d0d JB |
3729 | u32 eecd; |
3730 | u32 i; | |
3731 | u16 data; | |
3732 | ||
3733 | /* In order to read a register from the EEPROM, we need to shift 'count' | |
3734 | * bits in from the EEPROM. Bits are "shifted in" by raising the clock | |
6cfbd97b JK |
3735 | * input to the EEPROM (setting the SK bit), and then reading the value |
3736 | * of the "DO" bit. During this "shifting in" process the "DI" bit | |
3737 | * should always be clear. | |
120a5d0d | 3738 | */ |
1da177e4 | 3739 | |
120a5d0d | 3740 | eecd = er32(EECD); |
1da177e4 | 3741 | |
120a5d0d JB |
3742 | eecd &= ~(E1000_EECD_DO | E1000_EECD_DI); |
3743 | data = 0; | |
1da177e4 | 3744 | |
120a5d0d JB |
3745 | for (i = 0; i < count; i++) { |
3746 | data = data << 1; | |
3747 | e1000_raise_ee_clk(hw, &eecd); | |
1da177e4 | 3748 | |
120a5d0d | 3749 | eecd = er32(EECD); |
1da177e4 | 3750 | |
120a5d0d JB |
3751 | eecd &= ~(E1000_EECD_DI); |
3752 | if (eecd & E1000_EECD_DO) | |
3753 | data |= 1; | |
1da177e4 | 3754 | |
120a5d0d JB |
3755 | e1000_lower_ee_clk(hw, &eecd); |
3756 | } | |
1da177e4 | 3757 | |
120a5d0d | 3758 | return data; |
1da177e4 LT |
3759 | } |
3760 | ||
120a5d0d JB |
3761 | /** |
3762 | * e1000_acquire_eeprom - Prepares EEPROM for access | |
3763 | * @hw: Struct containing variables accessed by shared code | |
1da177e4 LT |
3764 | * |
3765 | * Lowers EEPROM clock. Clears input pin. Sets the chip select pin. This | |
3766 | * function should be called before issuing a command to the EEPROM. | |
120a5d0d | 3767 | */ |
64798845 | 3768 | static s32 e1000_acquire_eeprom(struct e1000_hw *hw) |
1da177e4 | 3769 | { |
120a5d0d JB |
3770 | struct e1000_eeprom_info *eeprom = &hw->eeprom; |
3771 | u32 eecd, i = 0; | |
3772 | ||
675ad473 | 3773 | e_dbg("e1000_acquire_eeprom"); |
120a5d0d JB |
3774 | |
3775 | eecd = er32(EECD); | |
3776 | ||
3777 | /* Request EEPROM Access */ | |
3778 | if (hw->mac_type > e1000_82544) { | |
3779 | eecd |= E1000_EECD_REQ; | |
3780 | ew32(EECD, eecd); | |
3781 | eecd = er32(EECD); | |
3782 | while ((!(eecd & E1000_EECD_GNT)) && | |
3783 | (i < E1000_EEPROM_GRANT_ATTEMPTS)) { | |
3784 | i++; | |
3785 | udelay(5); | |
3786 | eecd = er32(EECD); | |
3787 | } | |
3788 | if (!(eecd & E1000_EECD_GNT)) { | |
3789 | eecd &= ~E1000_EECD_REQ; | |
3790 | ew32(EECD, eecd); | |
675ad473 | 3791 | e_dbg("Could not acquire EEPROM grant\n"); |
120a5d0d JB |
3792 | return -E1000_ERR_EEPROM; |
3793 | } | |
3794 | } | |
3795 | ||
3796 | /* Setup EEPROM for Read/Write */ | |
3797 | ||
3798 | if (eeprom->type == e1000_eeprom_microwire) { | |
3799 | /* Clear SK and DI */ | |
3800 | eecd &= ~(E1000_EECD_DI | E1000_EECD_SK); | |
3801 | ew32(EECD, eecd); | |
3802 | ||
3803 | /* Set CS */ | |
3804 | eecd |= E1000_EECD_CS; | |
3805 | ew32(EECD, eecd); | |
3806 | } else if (eeprom->type == e1000_eeprom_spi) { | |
3807 | /* Clear SK and CS */ | |
3808 | eecd &= ~(E1000_EECD_CS | E1000_EECD_SK); | |
3809 | ew32(EECD, eecd); | |
945a5151 | 3810 | E1000_WRITE_FLUSH(); |
120a5d0d JB |
3811 | udelay(1); |
3812 | } | |
3813 | ||
3814 | return E1000_SUCCESS; | |
1da177e4 LT |
3815 | } |
3816 | ||
120a5d0d JB |
3817 | /** |
3818 | * e1000_standby_eeprom - Returns EEPROM to a "standby" state | |
3819 | * @hw: Struct containing variables accessed by shared code | |
3820 | */ | |
64798845 | 3821 | static void e1000_standby_eeprom(struct e1000_hw *hw) |
1da177e4 | 3822 | { |
120a5d0d JB |
3823 | struct e1000_eeprom_info *eeprom = &hw->eeprom; |
3824 | u32 eecd; | |
3825 | ||
3826 | eecd = er32(EECD); | |
3827 | ||
3828 | if (eeprom->type == e1000_eeprom_microwire) { | |
3829 | eecd &= ~(E1000_EECD_CS | E1000_EECD_SK); | |
3830 | ew32(EECD, eecd); | |
3831 | E1000_WRITE_FLUSH(); | |
3832 | udelay(eeprom->delay_usec); | |
3833 | ||
3834 | /* Clock high */ | |
3835 | eecd |= E1000_EECD_SK; | |
3836 | ew32(EECD, eecd); | |
3837 | E1000_WRITE_FLUSH(); | |
3838 | udelay(eeprom->delay_usec); | |
3839 | ||
3840 | /* Select EEPROM */ | |
3841 | eecd |= E1000_EECD_CS; | |
3842 | ew32(EECD, eecd); | |
3843 | E1000_WRITE_FLUSH(); | |
3844 | udelay(eeprom->delay_usec); | |
3845 | ||
3846 | /* Clock low */ | |
3847 | eecd &= ~E1000_EECD_SK; | |
3848 | ew32(EECD, eecd); | |
3849 | E1000_WRITE_FLUSH(); | |
3850 | udelay(eeprom->delay_usec); | |
3851 | } else if (eeprom->type == e1000_eeprom_spi) { | |
3852 | /* Toggle CS to flush commands */ | |
3853 | eecd |= E1000_EECD_CS; | |
3854 | ew32(EECD, eecd); | |
3855 | E1000_WRITE_FLUSH(); | |
3856 | udelay(eeprom->delay_usec); | |
3857 | eecd &= ~E1000_EECD_CS; | |
3858 | ew32(EECD, eecd); | |
3859 | E1000_WRITE_FLUSH(); | |
3860 | udelay(eeprom->delay_usec); | |
3861 | } | |
1da177e4 LT |
3862 | } |
3863 | ||
120a5d0d JB |
3864 | /** |
3865 | * e1000_release_eeprom - drop chip select | |
3866 | * @hw: Struct containing variables accessed by shared code | |
1da177e4 | 3867 | * |
120a5d0d JB |
3868 | * Terminates a command by inverting the EEPROM's chip select pin |
3869 | */ | |
64798845 | 3870 | static void e1000_release_eeprom(struct e1000_hw *hw) |
1da177e4 | 3871 | { |
120a5d0d | 3872 | u32 eecd; |
1da177e4 | 3873 | |
675ad473 | 3874 | e_dbg("e1000_release_eeprom"); |
1da177e4 | 3875 | |
120a5d0d | 3876 | eecd = er32(EECD); |
1da177e4 | 3877 | |
120a5d0d JB |
3878 | if (hw->eeprom.type == e1000_eeprom_spi) { |
3879 | eecd |= E1000_EECD_CS; /* Pull CS high */ | |
3880 | eecd &= ~E1000_EECD_SK; /* Lower SCK */ | |
1da177e4 | 3881 | |
120a5d0d | 3882 | ew32(EECD, eecd); |
945a5151 | 3883 | E1000_WRITE_FLUSH(); |
1da177e4 | 3884 | |
120a5d0d JB |
3885 | udelay(hw->eeprom.delay_usec); |
3886 | } else if (hw->eeprom.type == e1000_eeprom_microwire) { | |
3887 | /* cleanup eeprom */ | |
1da177e4 | 3888 | |
120a5d0d JB |
3889 | /* CS on Microwire is active-high */ |
3890 | eecd &= ~(E1000_EECD_CS | E1000_EECD_DI); | |
1da177e4 | 3891 | |
120a5d0d | 3892 | ew32(EECD, eecd); |
1da177e4 | 3893 | |
120a5d0d JB |
3894 | /* Rising edge of clock */ |
3895 | eecd |= E1000_EECD_SK; | |
3896 | ew32(EECD, eecd); | |
3897 | E1000_WRITE_FLUSH(); | |
3898 | udelay(hw->eeprom.delay_usec); | |
1da177e4 | 3899 | |
120a5d0d JB |
3900 | /* Falling edge of clock */ |
3901 | eecd &= ~E1000_EECD_SK; | |
3902 | ew32(EECD, eecd); | |
3903 | E1000_WRITE_FLUSH(); | |
3904 | udelay(hw->eeprom.delay_usec); | |
3905 | } | |
1da177e4 | 3906 | |
120a5d0d JB |
3907 | /* Stop requesting EEPROM access */ |
3908 | if (hw->mac_type > e1000_82544) { | |
3909 | eecd &= ~E1000_EECD_REQ; | |
3910 | ew32(EECD, eecd); | |
3911 | } | |
1da177e4 LT |
3912 | } |
3913 | ||
120a5d0d JB |
3914 | /** |
3915 | * e1000_spi_eeprom_ready - Reads a 16 bit word from the EEPROM. | |
3916 | * @hw: Struct containing variables accessed by shared code | |
3917 | */ | |
64798845 | 3918 | static s32 e1000_spi_eeprom_ready(struct e1000_hw *hw) |
1da177e4 | 3919 | { |
120a5d0d JB |
3920 | u16 retry_count = 0; |
3921 | u8 spi_stat_reg; | |
3922 | ||
675ad473 | 3923 | e_dbg("e1000_spi_eeprom_ready"); |
120a5d0d JB |
3924 | |
3925 | /* Read "Status Register" repeatedly until the LSB is cleared. The | |
3926 | * EEPROM will signal that the command has been completed by clearing | |
3927 | * bit 0 of the internal status register. If it's not cleared within | |
3928 | * 5 milliseconds, then error out. | |
3929 | */ | |
3930 | retry_count = 0; | |
3931 | do { | |
3932 | e1000_shift_out_ee_bits(hw, EEPROM_RDSR_OPCODE_SPI, | |
3933 | hw->eeprom.opcode_bits); | |
3934 | spi_stat_reg = (u8) e1000_shift_in_ee_bits(hw, 8); | |
3935 | if (!(spi_stat_reg & EEPROM_STATUS_RDY_SPI)) | |
3936 | break; | |
3937 | ||
3938 | udelay(5); | |
3939 | retry_count += 5; | |
3940 | ||
3941 | e1000_standby_eeprom(hw); | |
3942 | } while (retry_count < EEPROM_MAX_RETRY_SPI); | |
3943 | ||
3944 | /* ATMEL SPI write time could vary from 0-20mSec on 3.3V devices (and | |
3945 | * only 0-5mSec on 5V devices) | |
3946 | */ | |
3947 | if (retry_count >= EEPROM_MAX_RETRY_SPI) { | |
675ad473 | 3948 | e_dbg("SPI EEPROM Status error\n"); |
120a5d0d JB |
3949 | return -E1000_ERR_EEPROM; |
3950 | } | |
3951 | ||
3952 | return E1000_SUCCESS; | |
1da177e4 LT |
3953 | } |
3954 | ||
120a5d0d JB |
3955 | /** |
3956 | * e1000_read_eeprom - Reads a 16 bit word from the EEPROM. | |
3957 | * @hw: Struct containing variables accessed by shared code | |
3958 | * @offset: offset of word in the EEPROM to read | |
3959 | * @data: word read from the EEPROM | |
3960 | * @words: number of words to read | |
3961 | */ | |
64798845 | 3962 | s32 e1000_read_eeprom(struct e1000_hw *hw, u16 offset, u16 words, u16 *data) |
78566fec | 3963 | { |
120a5d0d JB |
3964 | s32 ret; |
3965 | spin_lock(&e1000_eeprom_lock); | |
3966 | ret = e1000_do_read_eeprom(hw, offset, words, data); | |
3967 | spin_unlock(&e1000_eeprom_lock); | |
3968 | return ret; | |
78566fec CL |
3969 | } |
3970 | ||
120a5d0d JB |
3971 | static s32 e1000_do_read_eeprom(struct e1000_hw *hw, u16 offset, u16 words, |
3972 | u16 *data) | |
1da177e4 | 3973 | { |
120a5d0d JB |
3974 | struct e1000_eeprom_info *eeprom = &hw->eeprom; |
3975 | u32 i = 0; | |
3976 | ||
675ad473 | 3977 | e_dbg("e1000_read_eeprom"); |
120a5d0d | 3978 | |
5377a416 DB |
3979 | if (hw->mac_type == e1000_ce4100) { |
3980 | GBE_CONFIG_FLASH_READ(GBE_CONFIG_BASE_VIRT, offset, words, | |
3981 | data); | |
3982 | return E1000_SUCCESS; | |
3983 | } | |
3984 | ||
120a5d0d JB |
3985 | /* If eeprom is not yet detected, do so now */ |
3986 | if (eeprom->word_size == 0) | |
3987 | e1000_init_eeprom_params(hw); | |
3988 | ||
6cfbd97b JK |
3989 | /* A check for invalid values: offset too large, too many words, and |
3990 | * not enough words. | |
120a5d0d JB |
3991 | */ |
3992 | if ((offset >= eeprom->word_size) | |
3993 | || (words > eeprom->word_size - offset) || (words == 0)) { | |
675ad473 ET |
3994 | e_dbg("\"words\" parameter out of bounds. Words = %d," |
3995 | "size = %d\n", offset, eeprom->word_size); | |
120a5d0d JB |
3996 | return -E1000_ERR_EEPROM; |
3997 | } | |
3998 | ||
3999 | /* EEPROM's that don't use EERD to read require us to bit-bang the SPI | |
4000 | * directly. In this case, we need to acquire the EEPROM so that | |
4001 | * FW or other port software does not interrupt. | |
4002 | */ | |
8f601b2d JB |
4003 | /* Prepare the EEPROM for bit-bang reading */ |
4004 | if (e1000_acquire_eeprom(hw) != E1000_SUCCESS) | |
4005 | return -E1000_ERR_EEPROM; | |
120a5d0d JB |
4006 | |
4007 | /* Set up the SPI or Microwire EEPROM for bit-bang reading. We have | |
6cfbd97b JK |
4008 | * acquired the EEPROM at this point, so any returns should release it |
4009 | */ | |
120a5d0d JB |
4010 | if (eeprom->type == e1000_eeprom_spi) { |
4011 | u16 word_in; | |
4012 | u8 read_opcode = EEPROM_READ_OPCODE_SPI; | |
4013 | ||
4014 | if (e1000_spi_eeprom_ready(hw)) { | |
4015 | e1000_release_eeprom(hw); | |
4016 | return -E1000_ERR_EEPROM; | |
4017 | } | |
4018 | ||
4019 | e1000_standby_eeprom(hw); | |
4020 | ||
6cfbd97b JK |
4021 | /* Some SPI eeproms use the 8th address bit embedded in the |
4022 | * opcode | |
4023 | */ | |
120a5d0d JB |
4024 | if ((eeprom->address_bits == 8) && (offset >= 128)) |
4025 | read_opcode |= EEPROM_A8_OPCODE_SPI; | |
4026 | ||
4027 | /* Send the READ command (opcode + addr) */ | |
4028 | e1000_shift_out_ee_bits(hw, read_opcode, eeprom->opcode_bits); | |
4029 | e1000_shift_out_ee_bits(hw, (u16) (offset * 2), | |
4030 | eeprom->address_bits); | |
4031 | ||
6cfbd97b JK |
4032 | /* Read the data. The address of the eeprom internally |
4033 | * increments with each byte (spi) being read, saving on the | |
4034 | * overhead of eeprom setup and tear-down. The address counter | |
4035 | * will roll over if reading beyond the size of the eeprom, thus | |
4036 | * allowing the entire memory to be read starting from any | |
4037 | * offset. | |
4038 | */ | |
120a5d0d JB |
4039 | for (i = 0; i < words; i++) { |
4040 | word_in = e1000_shift_in_ee_bits(hw, 16); | |
4041 | data[i] = (word_in >> 8) | (word_in << 8); | |
4042 | } | |
4043 | } else if (eeprom->type == e1000_eeprom_microwire) { | |
4044 | for (i = 0; i < words; i++) { | |
4045 | /* Send the READ command (opcode + addr) */ | |
4046 | e1000_shift_out_ee_bits(hw, | |
4047 | EEPROM_READ_OPCODE_MICROWIRE, | |
4048 | eeprom->opcode_bits); | |
4049 | e1000_shift_out_ee_bits(hw, (u16) (offset + i), | |
4050 | eeprom->address_bits); | |
4051 | ||
6cfbd97b JK |
4052 | /* Read the data. For microwire, each word requires the |
4053 | * overhead of eeprom setup and tear-down. | |
4054 | */ | |
120a5d0d JB |
4055 | data[i] = e1000_shift_in_ee_bits(hw, 16); |
4056 | e1000_standby_eeprom(hw); | |
4057 | } | |
4058 | } | |
4059 | ||
4060 | /* End this read operation */ | |
4061 | e1000_release_eeprom(hw); | |
4062 | ||
4063 | return E1000_SUCCESS; | |
1da177e4 LT |
4064 | } |
4065 | ||
120a5d0d JB |
4066 | /** |
4067 | * e1000_validate_eeprom_checksum - Verifies that the EEPROM has a valid checksum | |
4068 | * @hw: Struct containing variables accessed by shared code | |
2d7edb92 MC |
4069 | * |
4070 | * Reads the first 64 16 bit words of the EEPROM and sums the values read. | |
4071 | * If the the sum of the 64 16 bit words is 0xBABA, the EEPROM's checksum is | |
4072 | * valid. | |
120a5d0d | 4073 | */ |
64798845 | 4074 | s32 e1000_validate_eeprom_checksum(struct e1000_hw *hw) |
2d7edb92 | 4075 | { |
120a5d0d JB |
4076 | u16 checksum = 0; |
4077 | u16 i, eeprom_data; | |
4078 | ||
675ad473 | 4079 | e_dbg("e1000_validate_eeprom_checksum"); |
120a5d0d JB |
4080 | |
4081 | for (i = 0; i < (EEPROM_CHECKSUM_REG + 1); i++) { | |
4082 | if (e1000_read_eeprom(hw, i, 1, &eeprom_data) < 0) { | |
675ad473 | 4083 | e_dbg("EEPROM Read Error\n"); |
120a5d0d JB |
4084 | return -E1000_ERR_EEPROM; |
4085 | } | |
4086 | checksum += eeprom_data; | |
4087 | } | |
4088 | ||
e2faeec2 JK |
4089 | #ifdef CONFIG_PARISC |
4090 | /* This is a signature and not a checksum on HP c8000 */ | |
4091 | if ((hw->subsystem_vendor_id == 0x103C) && (eeprom_data == 0x16d6)) | |
4092 | return E1000_SUCCESS; | |
4093 | ||
4094 | #endif | |
120a5d0d JB |
4095 | if (checksum == (u16) EEPROM_SUM) |
4096 | return E1000_SUCCESS; | |
4097 | else { | |
675ad473 | 4098 | e_dbg("EEPROM Checksum Invalid\n"); |
120a5d0d JB |
4099 | return -E1000_ERR_EEPROM; |
4100 | } | |
2d7edb92 MC |
4101 | } |
4102 | ||
120a5d0d JB |
4103 | /** |
4104 | * e1000_update_eeprom_checksum - Calculates/writes the EEPROM checksum | |
4105 | * @hw: Struct containing variables accessed by shared code | |
2d7edb92 MC |
4106 | * |
4107 | * Sums the first 63 16 bit words of the EEPROM. Subtracts the sum from 0xBABA. | |
4108 | * Writes the difference to word offset 63 of the EEPROM. | |
120a5d0d | 4109 | */ |
64798845 | 4110 | s32 e1000_update_eeprom_checksum(struct e1000_hw *hw) |
2d7edb92 | 4111 | { |
120a5d0d JB |
4112 | u16 checksum = 0; |
4113 | u16 i, eeprom_data; | |
4114 | ||
675ad473 | 4115 | e_dbg("e1000_update_eeprom_checksum"); |
120a5d0d JB |
4116 | |
4117 | for (i = 0; i < EEPROM_CHECKSUM_REG; i++) { | |
4118 | if (e1000_read_eeprom(hw, i, 1, &eeprom_data) < 0) { | |
675ad473 | 4119 | e_dbg("EEPROM Read Error\n"); |
120a5d0d JB |
4120 | return -E1000_ERR_EEPROM; |
4121 | } | |
4122 | checksum += eeprom_data; | |
4123 | } | |
4124 | checksum = (u16) EEPROM_SUM - checksum; | |
4125 | if (e1000_write_eeprom(hw, EEPROM_CHECKSUM_REG, 1, &checksum) < 0) { | |
675ad473 | 4126 | e_dbg("EEPROM Write Error\n"); |
120a5d0d JB |
4127 | return -E1000_ERR_EEPROM; |
4128 | } | |
4129 | return E1000_SUCCESS; | |
1da177e4 LT |
4130 | } |
4131 | ||
120a5d0d JB |
4132 | /** |
4133 | * e1000_write_eeprom - write words to the different EEPROM types. | |
4134 | * @hw: Struct containing variables accessed by shared code | |
4135 | * @offset: offset within the EEPROM to be written to | |
4136 | * @words: number of words to write | |
4137 | * @data: 16 bit word to be written to the EEPROM | |
1da177e4 LT |
4138 | * |
4139 | * If e1000_update_eeprom_checksum is not called after this function, the | |
4140 | * EEPROM will most likely contain an invalid checksum. | |
120a5d0d | 4141 | */ |
64798845 | 4142 | s32 e1000_write_eeprom(struct e1000_hw *hw, u16 offset, u16 words, u16 *data) |
78566fec | 4143 | { |
120a5d0d JB |
4144 | s32 ret; |
4145 | spin_lock(&e1000_eeprom_lock); | |
4146 | ret = e1000_do_write_eeprom(hw, offset, words, data); | |
4147 | spin_unlock(&e1000_eeprom_lock); | |
4148 | return ret; | |
78566fec CL |
4149 | } |
4150 | ||
120a5d0d JB |
4151 | static s32 e1000_do_write_eeprom(struct e1000_hw *hw, u16 offset, u16 words, |
4152 | u16 *data) | |
1da177e4 | 4153 | { |
120a5d0d JB |
4154 | struct e1000_eeprom_info *eeprom = &hw->eeprom; |
4155 | s32 status = 0; | |
4156 | ||
675ad473 | 4157 | e_dbg("e1000_write_eeprom"); |
120a5d0d | 4158 | |
5377a416 DB |
4159 | if (hw->mac_type == e1000_ce4100) { |
4160 | GBE_CONFIG_FLASH_WRITE(GBE_CONFIG_BASE_VIRT, offset, words, | |
4161 | data); | |
4162 | return E1000_SUCCESS; | |
4163 | } | |
4164 | ||
120a5d0d JB |
4165 | /* If eeprom is not yet detected, do so now */ |
4166 | if (eeprom->word_size == 0) | |
4167 | e1000_init_eeprom_params(hw); | |
4168 | ||
6cfbd97b JK |
4169 | /* A check for invalid values: offset too large, too many words, and |
4170 | * not enough words. | |
120a5d0d JB |
4171 | */ |
4172 | if ((offset >= eeprom->word_size) | |
4173 | || (words > eeprom->word_size - offset) || (words == 0)) { | |
675ad473 | 4174 | e_dbg("\"words\" parameter out of bounds\n"); |
120a5d0d JB |
4175 | return -E1000_ERR_EEPROM; |
4176 | } | |
4177 | ||
120a5d0d JB |
4178 | /* Prepare the EEPROM for writing */ |
4179 | if (e1000_acquire_eeprom(hw) != E1000_SUCCESS) | |
4180 | return -E1000_ERR_EEPROM; | |
4181 | ||
4182 | if (eeprom->type == e1000_eeprom_microwire) { | |
4183 | status = e1000_write_eeprom_microwire(hw, offset, words, data); | |
4184 | } else { | |
4185 | status = e1000_write_eeprom_spi(hw, offset, words, data); | |
4186 | msleep(10); | |
4187 | } | |
4188 | ||
4189 | /* Done with writing */ | |
4190 | e1000_release_eeprom(hw); | |
4191 | ||
4192 | return status; | |
1da177e4 LT |
4193 | } |
4194 | ||
120a5d0d JB |
4195 | /** |
4196 | * e1000_write_eeprom_spi - Writes a 16 bit word to a given offset in an SPI EEPROM. | |
4197 | * @hw: Struct containing variables accessed by shared code | |
4198 | * @offset: offset within the EEPROM to be written to | |
4199 | * @words: number of words to write | |
4200 | * @data: pointer to array of 8 bit words to be written to the EEPROM | |
4201 | */ | |
64798845 JP |
4202 | static s32 e1000_write_eeprom_spi(struct e1000_hw *hw, u16 offset, u16 words, |
4203 | u16 *data) | |
1da177e4 | 4204 | { |
120a5d0d JB |
4205 | struct e1000_eeprom_info *eeprom = &hw->eeprom; |
4206 | u16 widx = 0; | |
1da177e4 | 4207 | |
675ad473 | 4208 | e_dbg("e1000_write_eeprom_spi"); |
1da177e4 | 4209 | |
120a5d0d JB |
4210 | while (widx < words) { |
4211 | u8 write_opcode = EEPROM_WRITE_OPCODE_SPI; | |
1da177e4 | 4212 | |
120a5d0d JB |
4213 | if (e1000_spi_eeprom_ready(hw)) |
4214 | return -E1000_ERR_EEPROM; | |
1da177e4 | 4215 | |
120a5d0d | 4216 | e1000_standby_eeprom(hw); |
1da177e4 | 4217 | |
120a5d0d JB |
4218 | /* Send the WRITE ENABLE command (8 bit opcode ) */ |
4219 | e1000_shift_out_ee_bits(hw, EEPROM_WREN_OPCODE_SPI, | |
4220 | eeprom->opcode_bits); | |
1da177e4 | 4221 | |
120a5d0d | 4222 | e1000_standby_eeprom(hw); |
1da177e4 | 4223 | |
6cfbd97b JK |
4224 | /* Some SPI eeproms use the 8th address bit embedded in the |
4225 | * opcode | |
4226 | */ | |
120a5d0d JB |
4227 | if ((eeprom->address_bits == 8) && (offset >= 128)) |
4228 | write_opcode |= EEPROM_A8_OPCODE_SPI; | |
1da177e4 | 4229 | |
120a5d0d JB |
4230 | /* Send the Write command (8-bit opcode + addr) */ |
4231 | e1000_shift_out_ee_bits(hw, write_opcode, eeprom->opcode_bits); | |
1da177e4 | 4232 | |
120a5d0d JB |
4233 | e1000_shift_out_ee_bits(hw, (u16) ((offset + widx) * 2), |
4234 | eeprom->address_bits); | |
1da177e4 | 4235 | |
120a5d0d | 4236 | /* Send the data */ |
1da177e4 | 4237 | |
6cfbd97b JK |
4238 | /* Loop to allow for up to whole page write (32 bytes) of |
4239 | * eeprom | |
4240 | */ | |
120a5d0d JB |
4241 | while (widx < words) { |
4242 | u16 word_out = data[widx]; | |
4243 | word_out = (word_out >> 8) | (word_out << 8); | |
4244 | e1000_shift_out_ee_bits(hw, word_out, 16); | |
4245 | widx++; | |
1da177e4 | 4246 | |
6cfbd97b JK |
4247 | /* Some larger eeprom sizes are capable of a 32-byte |
4248 | * PAGE WRITE operation, while the smaller eeproms are | |
4249 | * capable of an 8-byte PAGE WRITE operation. Break the | |
4250 | * inner loop to pass new address | |
120a5d0d JB |
4251 | */ |
4252 | if ((((offset + widx) * 2) % eeprom->page_size) == 0) { | |
4253 | e1000_standby_eeprom(hw); | |
4254 | break; | |
4255 | } | |
4256 | } | |
4257 | } | |
1da177e4 | 4258 | |
120a5d0d | 4259 | return E1000_SUCCESS; |
1da177e4 LT |
4260 | } |
4261 | ||
120a5d0d JB |
4262 | /** |
4263 | * e1000_write_eeprom_microwire - Writes a 16 bit word to a given offset in a Microwire EEPROM. | |
4264 | * @hw: Struct containing variables accessed by shared code | |
4265 | * @offset: offset within the EEPROM to be written to | |
4266 | * @words: number of words to write | |
4267 | * @data: pointer to array of 8 bit words to be written to the EEPROM | |
4268 | */ | |
64798845 JP |
4269 | static s32 e1000_write_eeprom_microwire(struct e1000_hw *hw, u16 offset, |
4270 | u16 words, u16 *data) | |
1da177e4 | 4271 | { |
120a5d0d JB |
4272 | struct e1000_eeprom_info *eeprom = &hw->eeprom; |
4273 | u32 eecd; | |
4274 | u16 words_written = 0; | |
4275 | u16 i = 0; | |
4276 | ||
675ad473 | 4277 | e_dbg("e1000_write_eeprom_microwire"); |
120a5d0d JB |
4278 | |
4279 | /* Send the write enable command to the EEPROM (3-bit opcode plus | |
4280 | * 6/8-bit dummy address beginning with 11). It's less work to include | |
4281 | * the 11 of the dummy address as part of the opcode than it is to shift | |
4282 | * it over the correct number of bits for the address. This puts the | |
4283 | * EEPROM into write/erase mode. | |
4284 | */ | |
4285 | e1000_shift_out_ee_bits(hw, EEPROM_EWEN_OPCODE_MICROWIRE, | |
4286 | (u16) (eeprom->opcode_bits + 2)); | |
4287 | ||
4288 | e1000_shift_out_ee_bits(hw, 0, (u16) (eeprom->address_bits - 2)); | |
4289 | ||
4290 | /* Prepare the EEPROM */ | |
4291 | e1000_standby_eeprom(hw); | |
4292 | ||
4293 | while (words_written < words) { | |
4294 | /* Send the Write command (3-bit opcode + addr) */ | |
4295 | e1000_shift_out_ee_bits(hw, EEPROM_WRITE_OPCODE_MICROWIRE, | |
4296 | eeprom->opcode_bits); | |
4297 | ||
4298 | e1000_shift_out_ee_bits(hw, (u16) (offset + words_written), | |
4299 | eeprom->address_bits); | |
4300 | ||
4301 | /* Send the data */ | |
4302 | e1000_shift_out_ee_bits(hw, data[words_written], 16); | |
4303 | ||
6cfbd97b JK |
4304 | /* Toggle the CS line. This in effect tells the EEPROM to |
4305 | * execute the previous command. | |
120a5d0d JB |
4306 | */ |
4307 | e1000_standby_eeprom(hw); | |
4308 | ||
6cfbd97b JK |
4309 | /* Read DO repeatedly until it is high (equal to '1'). The |
4310 | * EEPROM will signal that the command has been completed by | |
4311 | * raising the DO signal. If DO does not go high in 10 | |
4312 | * milliseconds, then error out. | |
120a5d0d JB |
4313 | */ |
4314 | for (i = 0; i < 200; i++) { | |
4315 | eecd = er32(EECD); | |
4316 | if (eecd & E1000_EECD_DO) | |
4317 | break; | |
4318 | udelay(50); | |
4319 | } | |
4320 | if (i == 200) { | |
675ad473 | 4321 | e_dbg("EEPROM Write did not complete\n"); |
120a5d0d JB |
4322 | return -E1000_ERR_EEPROM; |
4323 | } | |
4324 | ||
4325 | /* Recover from write */ | |
4326 | e1000_standby_eeprom(hw); | |
4327 | ||
4328 | words_written++; | |
4329 | } | |
4330 | ||
4331 | /* Send the write disable command to the EEPROM (3-bit opcode plus | |
4332 | * 6/8-bit dummy address beginning with 10). It's less work to include | |
4333 | * the 10 of the dummy address as part of the opcode than it is to shift | |
4334 | * it over the correct number of bits for the address. This takes the | |
4335 | * EEPROM out of write/erase mode. | |
4336 | */ | |
4337 | e1000_shift_out_ee_bits(hw, EEPROM_EWDS_OPCODE_MICROWIRE, | |
4338 | (u16) (eeprom->opcode_bits + 2)); | |
4339 | ||
4340 | e1000_shift_out_ee_bits(hw, 0, (u16) (eeprom->address_bits - 2)); | |
4341 | ||
4342 | return E1000_SUCCESS; | |
1da177e4 LT |
4343 | } |
4344 | ||
120a5d0d JB |
4345 | /** |
4346 | * e1000_read_mac_addr - read the adapters MAC from eeprom | |
4347 | * @hw: Struct containing variables accessed by shared code | |
4348 | * | |
1da177e4 LT |
4349 | * Reads the adapter's MAC address from the EEPROM and inverts the LSB for the |
4350 | * second function of dual function devices | |
120a5d0d | 4351 | */ |
64798845 | 4352 | s32 e1000_read_mac_addr(struct e1000_hw *hw) |
1da177e4 | 4353 | { |
120a5d0d JB |
4354 | u16 offset; |
4355 | u16 eeprom_data, i; | |
4356 | ||
675ad473 | 4357 | e_dbg("e1000_read_mac_addr"); |
120a5d0d JB |
4358 | |
4359 | for (i = 0; i < NODE_ADDRESS_SIZE; i += 2) { | |
4360 | offset = i >> 1; | |
4361 | if (e1000_read_eeprom(hw, offset, 1, &eeprom_data) < 0) { | |
675ad473 | 4362 | e_dbg("EEPROM Read Error\n"); |
120a5d0d JB |
4363 | return -E1000_ERR_EEPROM; |
4364 | } | |
4365 | hw->perm_mac_addr[i] = (u8) (eeprom_data & 0x00FF); | |
4366 | hw->perm_mac_addr[i + 1] = (u8) (eeprom_data >> 8); | |
4367 | } | |
4368 | ||
4369 | switch (hw->mac_type) { | |
4370 | default: | |
4371 | break; | |
4372 | case e1000_82546: | |
4373 | case e1000_82546_rev_3: | |
4374 | if (er32(STATUS) & E1000_STATUS_FUNC_1) | |
4375 | hw->perm_mac_addr[5] ^= 0x01; | |
4376 | break; | |
4377 | } | |
4378 | ||
4379 | for (i = 0; i < NODE_ADDRESS_SIZE; i++) | |
4380 | hw->mac_addr[i] = hw->perm_mac_addr[i]; | |
4381 | return E1000_SUCCESS; | |
1da177e4 LT |
4382 | } |
4383 | ||
120a5d0d JB |
4384 | /** |
4385 | * e1000_init_rx_addrs - Initializes receive address filters. | |
4386 | * @hw: Struct containing variables accessed by shared code | |
1da177e4 LT |
4387 | * |
4388 | * Places the MAC address in receive address register 0 and clears the rest | |
120a5d0d | 4389 | * of the receive address registers. Clears the multicast table. Assumes |
1da177e4 | 4390 | * the receiver is in reset when the routine is called. |
120a5d0d | 4391 | */ |
64798845 | 4392 | static void e1000_init_rx_addrs(struct e1000_hw *hw) |
1da177e4 | 4393 | { |
120a5d0d JB |
4394 | u32 i; |
4395 | u32 rar_num; | |
1da177e4 | 4396 | |
675ad473 | 4397 | e_dbg("e1000_init_rx_addrs"); |
1da177e4 | 4398 | |
120a5d0d | 4399 | /* Setup the receive address. */ |
675ad473 | 4400 | e_dbg("Programming MAC Address into RAR[0]\n"); |
1da177e4 | 4401 | |
120a5d0d | 4402 | e1000_rar_set(hw, hw->mac_addr, 0); |
1da177e4 | 4403 | |
120a5d0d | 4404 | rar_num = E1000_RAR_ENTRIES; |
868d5309 | 4405 | |
120a5d0d | 4406 | /* Zero out the other 15 receive addresses. */ |
675ad473 | 4407 | e_dbg("Clearing RAR[1-15]\n"); |
120a5d0d JB |
4408 | for (i = 1; i < rar_num; i++) { |
4409 | E1000_WRITE_REG_ARRAY(hw, RA, (i << 1), 0); | |
4410 | E1000_WRITE_FLUSH(); | |
4411 | E1000_WRITE_REG_ARRAY(hw, RA, ((i << 1) + 1), 0); | |
4412 | E1000_WRITE_FLUSH(); | |
4413 | } | |
1da177e4 LT |
4414 | } |
4415 | ||
120a5d0d JB |
4416 | /** |
4417 | * e1000_hash_mc_addr - Hashes an address to determine its location in the multicast table | |
4418 | * @hw: Struct containing variables accessed by shared code | |
4419 | * @mc_addr: the multicast address to hash | |
4420 | */ | |
64798845 | 4421 | u32 e1000_hash_mc_addr(struct e1000_hw *hw, u8 *mc_addr) |
1da177e4 | 4422 | { |
120a5d0d JB |
4423 | u32 hash_value = 0; |
4424 | ||
4425 | /* The portion of the address that is used for the hash table is | |
4426 | * determined by the mc_filter_type setting. | |
4427 | */ | |
4428 | switch (hw->mc_filter_type) { | |
4429 | /* [0] [1] [2] [3] [4] [5] | |
4430 | * 01 AA 00 12 34 56 | |
4431 | * LSB MSB | |
4432 | */ | |
4433 | case 0: | |
4434 | /* [47:36] i.e. 0x563 for above example address */ | |
4435 | hash_value = ((mc_addr[4] >> 4) | (((u16) mc_addr[5]) << 4)); | |
4436 | break; | |
4437 | case 1: | |
4438 | /* [46:35] i.e. 0xAC6 for above example address */ | |
4439 | hash_value = ((mc_addr[4] >> 3) | (((u16) mc_addr[5]) << 5)); | |
4440 | break; | |
4441 | case 2: | |
4442 | /* [45:34] i.e. 0x5D8 for above example address */ | |
4443 | hash_value = ((mc_addr[4] >> 2) | (((u16) mc_addr[5]) << 6)); | |
4444 | break; | |
4445 | case 3: | |
4446 | /* [43:32] i.e. 0x634 for above example address */ | |
4447 | hash_value = ((mc_addr[4]) | (((u16) mc_addr[5]) << 8)); | |
4448 | break; | |
4449 | } | |
4450 | ||
4451 | hash_value &= 0xFFF; | |
4452 | return hash_value; | |
1da177e4 LT |
4453 | } |
4454 | ||
120a5d0d JB |
4455 | /** |
4456 | * e1000_rar_set - Puts an ethernet address into a receive address register. | |
4457 | * @hw: Struct containing variables accessed by shared code | |
4458 | * @addr: Address to put into receive address register | |
4459 | * @index: Receive address register to write | |
4460 | */ | |
64798845 | 4461 | void e1000_rar_set(struct e1000_hw *hw, u8 *addr, u32 index) |
1da177e4 | 4462 | { |
120a5d0d JB |
4463 | u32 rar_low, rar_high; |
4464 | ||
4465 | /* HW expects these in little endian so we reverse the byte order | |
4466 | * from network order (big endian) to little endian | |
4467 | */ | |
4468 | rar_low = ((u32) addr[0] | ((u32) addr[1] << 8) | | |
4469 | ((u32) addr[2] << 16) | ((u32) addr[3] << 24)); | |
4470 | rar_high = ((u32) addr[4] | ((u32) addr[5] << 8)); | |
4471 | ||
4472 | /* Disable Rx and flush all Rx frames before enabling RSS to avoid Rx | |
4473 | * unit hang. | |
4474 | * | |
4475 | * Description: | |
4476 | * If there are any Rx frames queued up or otherwise present in the HW | |
4477 | * before RSS is enabled, and then we enable RSS, the HW Rx unit will | |
4478 | * hang. To work around this issue, we have to disable receives and | |
4479 | * flush out all Rx frames before we enable RSS. To do so, we modify we | |
4480 | * redirect all Rx traffic to manageability and then reset the HW. | |
4481 | * This flushes away Rx frames, and (since the redirections to | |
4482 | * manageability persists across resets) keeps new ones from coming in | |
4483 | * while we work. Then, we clear the Address Valid AV bit for all MAC | |
4484 | * addresses and undo the re-direction to manageability. | |
4485 | * Now, frames are coming in again, but the MAC won't accept them, so | |
4486 | * far so good. We now proceed to initialize RSS (if necessary) and | |
4487 | * configure the Rx unit. Last, we re-enable the AV bits and continue | |
4488 | * on our merry way. | |
4489 | */ | |
4490 | switch (hw->mac_type) { | |
4491 | default: | |
4492 | /* Indicate to hardware the Address is Valid. */ | |
4493 | rar_high |= E1000_RAH_AV; | |
4494 | break; | |
4495 | } | |
4496 | ||
4497 | E1000_WRITE_REG_ARRAY(hw, RA, (index << 1), rar_low); | |
4498 | E1000_WRITE_FLUSH(); | |
4499 | E1000_WRITE_REG_ARRAY(hw, RA, ((index << 1) + 1), rar_high); | |
4500 | E1000_WRITE_FLUSH(); | |
1da177e4 LT |
4501 | } |
4502 | ||
120a5d0d JB |
4503 | /** |
4504 | * e1000_write_vfta - Writes a value to the specified offset in the VLAN filter table. | |
4505 | * @hw: Struct containing variables accessed by shared code | |
4506 | * @offset: Offset in VLAN filer table to write | |
4507 | * @value: Value to write into VLAN filter table | |
4508 | */ | |
64798845 | 4509 | void e1000_write_vfta(struct e1000_hw *hw, u32 offset, u32 value) |
1da177e4 | 4510 | { |
120a5d0d JB |
4511 | u32 temp; |
4512 | ||
4513 | if ((hw->mac_type == e1000_82544) && ((offset & 0x1) == 1)) { | |
4514 | temp = E1000_READ_REG_ARRAY(hw, VFTA, (offset - 1)); | |
4515 | E1000_WRITE_REG_ARRAY(hw, VFTA, offset, value); | |
4516 | E1000_WRITE_FLUSH(); | |
4517 | E1000_WRITE_REG_ARRAY(hw, VFTA, (offset - 1), temp); | |
4518 | E1000_WRITE_FLUSH(); | |
4519 | } else { | |
4520 | E1000_WRITE_REG_ARRAY(hw, VFTA, offset, value); | |
4521 | E1000_WRITE_FLUSH(); | |
4522 | } | |
1da177e4 LT |
4523 | } |
4524 | ||
120a5d0d JB |
4525 | /** |
4526 | * e1000_clear_vfta - Clears the VLAN filer table | |
4527 | * @hw: Struct containing variables accessed by shared code | |
4528 | */ | |
64798845 | 4529 | static void e1000_clear_vfta(struct e1000_hw *hw) |
1da177e4 | 4530 | { |
120a5d0d JB |
4531 | u32 offset; |
4532 | u32 vfta_value = 0; | |
4533 | u32 vfta_offset = 0; | |
4534 | u32 vfta_bit_in_reg = 0; | |
4535 | ||
4536 | for (offset = 0; offset < E1000_VLAN_FILTER_TBL_SIZE; offset++) { | |
4537 | /* If the offset we want to clear is the same offset of the | |
4538 | * manageability VLAN ID, then clear all bits except that of the | |
6cfbd97b JK |
4539 | * manageability unit |
4540 | */ | |
120a5d0d JB |
4541 | vfta_value = (offset == vfta_offset) ? vfta_bit_in_reg : 0; |
4542 | E1000_WRITE_REG_ARRAY(hw, VFTA, offset, vfta_value); | |
4543 | E1000_WRITE_FLUSH(); | |
4544 | } | |
1da177e4 LT |
4545 | } |
4546 | ||
64798845 | 4547 | static s32 e1000_id_led_init(struct e1000_hw *hw) |
1da177e4 | 4548 | { |
120a5d0d JB |
4549 | u32 ledctl; |
4550 | const u32 ledctl_mask = 0x000000FF; | |
4551 | const u32 ledctl_on = E1000_LEDCTL_MODE_LED_ON; | |
4552 | const u32 ledctl_off = E1000_LEDCTL_MODE_LED_OFF; | |
4553 | u16 eeprom_data, i, temp; | |
4554 | const u16 led_mask = 0x0F; | |
4555 | ||
675ad473 | 4556 | e_dbg("e1000_id_led_init"); |
120a5d0d JB |
4557 | |
4558 | if (hw->mac_type < e1000_82540) { | |
4559 | /* Nothing to do */ | |
4560 | return E1000_SUCCESS; | |
4561 | } | |
4562 | ||
4563 | ledctl = er32(LEDCTL); | |
4564 | hw->ledctl_default = ledctl; | |
4565 | hw->ledctl_mode1 = hw->ledctl_default; | |
4566 | hw->ledctl_mode2 = hw->ledctl_default; | |
4567 | ||
4568 | if (e1000_read_eeprom(hw, EEPROM_ID_LED_SETTINGS, 1, &eeprom_data) < 0) { | |
675ad473 | 4569 | e_dbg("EEPROM Read Error\n"); |
120a5d0d JB |
4570 | return -E1000_ERR_EEPROM; |
4571 | } | |
4572 | ||
4573 | if ((eeprom_data == ID_LED_RESERVED_0000) || | |
4574 | (eeprom_data == ID_LED_RESERVED_FFFF)) { | |
4575 | eeprom_data = ID_LED_DEFAULT; | |
4576 | } | |
4577 | ||
4578 | for (i = 0; i < 4; i++) { | |
4579 | temp = (eeprom_data >> (i << 2)) & led_mask; | |
4580 | switch (temp) { | |
4581 | case ID_LED_ON1_DEF2: | |
4582 | case ID_LED_ON1_ON2: | |
4583 | case ID_LED_ON1_OFF2: | |
4584 | hw->ledctl_mode1 &= ~(ledctl_mask << (i << 3)); | |
4585 | hw->ledctl_mode1 |= ledctl_on << (i << 3); | |
4586 | break; | |
4587 | case ID_LED_OFF1_DEF2: | |
4588 | case ID_LED_OFF1_ON2: | |
4589 | case ID_LED_OFF1_OFF2: | |
4590 | hw->ledctl_mode1 &= ~(ledctl_mask << (i << 3)); | |
4591 | hw->ledctl_mode1 |= ledctl_off << (i << 3); | |
4592 | break; | |
4593 | default: | |
4594 | /* Do nothing */ | |
4595 | break; | |
4596 | } | |
4597 | switch (temp) { | |
4598 | case ID_LED_DEF1_ON2: | |
4599 | case ID_LED_ON1_ON2: | |
4600 | case ID_LED_OFF1_ON2: | |
4601 | hw->ledctl_mode2 &= ~(ledctl_mask << (i << 3)); | |
4602 | hw->ledctl_mode2 |= ledctl_on << (i << 3); | |
4603 | break; | |
4604 | case ID_LED_DEF1_OFF2: | |
4605 | case ID_LED_ON1_OFF2: | |
4606 | case ID_LED_OFF1_OFF2: | |
4607 | hw->ledctl_mode2 &= ~(ledctl_mask << (i << 3)); | |
4608 | hw->ledctl_mode2 |= ledctl_off << (i << 3); | |
4609 | break; | |
4610 | default: | |
4611 | /* Do nothing */ | |
4612 | break; | |
4613 | } | |
4614 | } | |
4615 | return E1000_SUCCESS; | |
1da177e4 LT |
4616 | } |
4617 | ||
120a5d0d JB |
4618 | /** |
4619 | * e1000_setup_led | |
4620 | * @hw: Struct containing variables accessed by shared code | |
1da177e4 | 4621 | * |
120a5d0d JB |
4622 | * Prepares SW controlable LED for use and saves the current state of the LED. |
4623 | */ | |
64798845 | 4624 | s32 e1000_setup_led(struct e1000_hw *hw) |
1da177e4 | 4625 | { |
120a5d0d JB |
4626 | u32 ledctl; |
4627 | s32 ret_val = E1000_SUCCESS; | |
4628 | ||
675ad473 | 4629 | e_dbg("e1000_setup_led"); |
120a5d0d JB |
4630 | |
4631 | switch (hw->mac_type) { | |
4632 | case e1000_82542_rev2_0: | |
4633 | case e1000_82542_rev2_1: | |
4634 | case e1000_82543: | |
4635 | case e1000_82544: | |
4636 | /* No setup necessary */ | |
4637 | break; | |
4638 | case e1000_82541: | |
4639 | case e1000_82547: | |
4640 | case e1000_82541_rev_2: | |
4641 | case e1000_82547_rev_2: | |
4642 | /* Turn off PHY Smart Power Down (if enabled) */ | |
4643 | ret_val = e1000_read_phy_reg(hw, IGP01E1000_GMII_FIFO, | |
4644 | &hw->phy_spd_default); | |
4645 | if (ret_val) | |
4646 | return ret_val; | |
4647 | ret_val = e1000_write_phy_reg(hw, IGP01E1000_GMII_FIFO, | |
4648 | (u16) (hw->phy_spd_default & | |
4649 | ~IGP01E1000_GMII_SPD)); | |
4650 | if (ret_val) | |
4651 | return ret_val; | |
4652 | /* Fall Through */ | |
4653 | default: | |
4654 | if (hw->media_type == e1000_media_type_fiber) { | |
4655 | ledctl = er32(LEDCTL); | |
4656 | /* Save current LEDCTL settings */ | |
4657 | hw->ledctl_default = ledctl; | |
4658 | /* Turn off LED0 */ | |
4659 | ledctl &= ~(E1000_LEDCTL_LED0_IVRT | | |
4660 | E1000_LEDCTL_LED0_BLINK | | |
4661 | E1000_LEDCTL_LED0_MODE_MASK); | |
4662 | ledctl |= (E1000_LEDCTL_MODE_LED_OFF << | |
4663 | E1000_LEDCTL_LED0_MODE_SHIFT); | |
4664 | ew32(LEDCTL, ledctl); | |
4665 | } else if (hw->media_type == e1000_media_type_copper) | |
4666 | ew32(LEDCTL, hw->ledctl_mode1); | |
4667 | break; | |
4668 | } | |
4669 | ||
4670 | return E1000_SUCCESS; | |
1da177e4 LT |
4671 | } |
4672 | ||
120a5d0d JB |
4673 | /** |
4674 | * e1000_cleanup_led - Restores the saved state of the SW controlable LED. | |
4675 | * @hw: Struct containing variables accessed by shared code | |
4676 | */ | |
64798845 | 4677 | s32 e1000_cleanup_led(struct e1000_hw *hw) |
1da177e4 | 4678 | { |
120a5d0d JB |
4679 | s32 ret_val = E1000_SUCCESS; |
4680 | ||
675ad473 | 4681 | e_dbg("e1000_cleanup_led"); |
120a5d0d JB |
4682 | |
4683 | switch (hw->mac_type) { | |
4684 | case e1000_82542_rev2_0: | |
4685 | case e1000_82542_rev2_1: | |
4686 | case e1000_82543: | |
4687 | case e1000_82544: | |
4688 | /* No cleanup necessary */ | |
4689 | break; | |
4690 | case e1000_82541: | |
4691 | case e1000_82547: | |
4692 | case e1000_82541_rev_2: | |
4693 | case e1000_82547_rev_2: | |
4694 | /* Turn on PHY Smart Power Down (if previously enabled) */ | |
4695 | ret_val = e1000_write_phy_reg(hw, IGP01E1000_GMII_FIFO, | |
4696 | hw->phy_spd_default); | |
4697 | if (ret_val) | |
4698 | return ret_val; | |
4699 | /* Fall Through */ | |
4700 | default: | |
4701 | /* Restore LEDCTL settings */ | |
4702 | ew32(LEDCTL, hw->ledctl_default); | |
4703 | break; | |
4704 | } | |
4705 | ||
4706 | return E1000_SUCCESS; | |
1da177e4 LT |
4707 | } |
4708 | ||
120a5d0d JB |
4709 | /** |
4710 | * e1000_led_on - Turns on the software controllable LED | |
4711 | * @hw: Struct containing variables accessed by shared code | |
4712 | */ | |
64798845 | 4713 | s32 e1000_led_on(struct e1000_hw *hw) |
1da177e4 | 4714 | { |
120a5d0d JB |
4715 | u32 ctrl = er32(CTRL); |
4716 | ||
675ad473 | 4717 | e_dbg("e1000_led_on"); |
120a5d0d JB |
4718 | |
4719 | switch (hw->mac_type) { | |
4720 | case e1000_82542_rev2_0: | |
4721 | case e1000_82542_rev2_1: | |
4722 | case e1000_82543: | |
4723 | /* Set SW Defineable Pin 0 to turn on the LED */ | |
4724 | ctrl |= E1000_CTRL_SWDPIN0; | |
4725 | ctrl |= E1000_CTRL_SWDPIO0; | |
4726 | break; | |
4727 | case e1000_82544: | |
4728 | if (hw->media_type == e1000_media_type_fiber) { | |
4729 | /* Set SW Defineable Pin 0 to turn on the LED */ | |
4730 | ctrl |= E1000_CTRL_SWDPIN0; | |
4731 | ctrl |= E1000_CTRL_SWDPIO0; | |
4732 | } else { | |
4733 | /* Clear SW Defineable Pin 0 to turn on the LED */ | |
4734 | ctrl &= ~E1000_CTRL_SWDPIN0; | |
4735 | ctrl |= E1000_CTRL_SWDPIO0; | |
4736 | } | |
4737 | break; | |
4738 | default: | |
4739 | if (hw->media_type == e1000_media_type_fiber) { | |
4740 | /* Clear SW Defineable Pin 0 to turn on the LED */ | |
4741 | ctrl &= ~E1000_CTRL_SWDPIN0; | |
4742 | ctrl |= E1000_CTRL_SWDPIO0; | |
4743 | } else if (hw->media_type == e1000_media_type_copper) { | |
4744 | ew32(LEDCTL, hw->ledctl_mode2); | |
4745 | return E1000_SUCCESS; | |
4746 | } | |
4747 | break; | |
4748 | } | |
4749 | ||
4750 | ew32(CTRL, ctrl); | |
4751 | ||
4752 | return E1000_SUCCESS; | |
1da177e4 LT |
4753 | } |
4754 | ||
120a5d0d JB |
4755 | /** |
4756 | * e1000_led_off - Turns off the software controllable LED | |
4757 | * @hw: Struct containing variables accessed by shared code | |
4758 | */ | |
64798845 | 4759 | s32 e1000_led_off(struct e1000_hw *hw) |
1da177e4 | 4760 | { |
120a5d0d JB |
4761 | u32 ctrl = er32(CTRL); |
4762 | ||
675ad473 | 4763 | e_dbg("e1000_led_off"); |
120a5d0d JB |
4764 | |
4765 | switch (hw->mac_type) { | |
4766 | case e1000_82542_rev2_0: | |
4767 | case e1000_82542_rev2_1: | |
4768 | case e1000_82543: | |
4769 | /* Clear SW Defineable Pin 0 to turn off the LED */ | |
4770 | ctrl &= ~E1000_CTRL_SWDPIN0; | |
4771 | ctrl |= E1000_CTRL_SWDPIO0; | |
4772 | break; | |
4773 | case e1000_82544: | |
4774 | if (hw->media_type == e1000_media_type_fiber) { | |
4775 | /* Clear SW Defineable Pin 0 to turn off the LED */ | |
4776 | ctrl &= ~E1000_CTRL_SWDPIN0; | |
4777 | ctrl |= E1000_CTRL_SWDPIO0; | |
4778 | } else { | |
4779 | /* Set SW Defineable Pin 0 to turn off the LED */ | |
4780 | ctrl |= E1000_CTRL_SWDPIN0; | |
4781 | ctrl |= E1000_CTRL_SWDPIO0; | |
4782 | } | |
4783 | break; | |
4784 | default: | |
4785 | if (hw->media_type == e1000_media_type_fiber) { | |
4786 | /* Set SW Defineable Pin 0 to turn off the LED */ | |
4787 | ctrl |= E1000_CTRL_SWDPIN0; | |
4788 | ctrl |= E1000_CTRL_SWDPIO0; | |
4789 | } else if (hw->media_type == e1000_media_type_copper) { | |
4790 | ew32(LEDCTL, hw->ledctl_mode1); | |
4791 | return E1000_SUCCESS; | |
4792 | } | |
4793 | break; | |
4794 | } | |
4795 | ||
4796 | ew32(CTRL, ctrl); | |
4797 | ||
4798 | return E1000_SUCCESS; | |
1da177e4 LT |
4799 | } |
4800 | ||
120a5d0d JB |
4801 | /** |
4802 | * e1000_clear_hw_cntrs - Clears all hardware statistics counters. | |
4803 | * @hw: Struct containing variables accessed by shared code | |
4804 | */ | |
64798845 | 4805 | static void e1000_clear_hw_cntrs(struct e1000_hw *hw) |
1da177e4 | 4806 | { |
120a5d0d JB |
4807 | volatile u32 temp; |
4808 | ||
4809 | temp = er32(CRCERRS); | |
4810 | temp = er32(SYMERRS); | |
4811 | temp = er32(MPC); | |
4812 | temp = er32(SCC); | |
4813 | temp = er32(ECOL); | |
4814 | temp = er32(MCC); | |
4815 | temp = er32(LATECOL); | |
4816 | temp = er32(COLC); | |
4817 | temp = er32(DC); | |
4818 | temp = er32(SEC); | |
4819 | temp = er32(RLEC); | |
4820 | temp = er32(XONRXC); | |
4821 | temp = er32(XONTXC); | |
4822 | temp = er32(XOFFRXC); | |
4823 | temp = er32(XOFFTXC); | |
4824 | temp = er32(FCRUC); | |
4825 | ||
4826 | temp = er32(PRC64); | |
4827 | temp = er32(PRC127); | |
4828 | temp = er32(PRC255); | |
4829 | temp = er32(PRC511); | |
4830 | temp = er32(PRC1023); | |
4831 | temp = er32(PRC1522); | |
4832 | ||
4833 | temp = er32(GPRC); | |
4834 | temp = er32(BPRC); | |
4835 | temp = er32(MPRC); | |
4836 | temp = er32(GPTC); | |
4837 | temp = er32(GORCL); | |
4838 | temp = er32(GORCH); | |
4839 | temp = er32(GOTCL); | |
4840 | temp = er32(GOTCH); | |
4841 | temp = er32(RNBC); | |
4842 | temp = er32(RUC); | |
4843 | temp = er32(RFC); | |
4844 | temp = er32(ROC); | |
4845 | temp = er32(RJC); | |
4846 | temp = er32(TORL); | |
4847 | temp = er32(TORH); | |
4848 | temp = er32(TOTL); | |
4849 | temp = er32(TOTH); | |
4850 | temp = er32(TPR); | |
4851 | temp = er32(TPT); | |
4852 | ||
4853 | temp = er32(PTC64); | |
4854 | temp = er32(PTC127); | |
4855 | temp = er32(PTC255); | |
4856 | temp = er32(PTC511); | |
4857 | temp = er32(PTC1023); | |
4858 | temp = er32(PTC1522); | |
4859 | ||
4860 | temp = er32(MPTC); | |
4861 | temp = er32(BPTC); | |
4862 | ||
4863 | if (hw->mac_type < e1000_82543) | |
4864 | return; | |
4865 | ||
4866 | temp = er32(ALGNERRC); | |
4867 | temp = er32(RXERRC); | |
4868 | temp = er32(TNCRS); | |
4869 | temp = er32(CEXTERR); | |
4870 | temp = er32(TSCTC); | |
4871 | temp = er32(TSCTFC); | |
4872 | ||
4873 | if (hw->mac_type <= e1000_82544) | |
4874 | return; | |
4875 | ||
4876 | temp = er32(MGTPRC); | |
4877 | temp = er32(MGTPDC); | |
4878 | temp = er32(MGTPTC); | |
1da177e4 LT |
4879 | } |
4880 | ||
120a5d0d JB |
4881 | /** |
4882 | * e1000_reset_adaptive - Resets Adaptive IFS to its default state. | |
4883 | * @hw: Struct containing variables accessed by shared code | |
1da177e4 LT |
4884 | * |
4885 | * Call this after e1000_init_hw. You may override the IFS defaults by setting | |
c3033b01 | 4886 | * hw->ifs_params_forced to true. However, you must initialize hw-> |
1da177e4 LT |
4887 | * current_ifs_val, ifs_min_val, ifs_max_val, ifs_step_size, and ifs_ratio |
4888 | * before calling this function. | |
120a5d0d | 4889 | */ |
64798845 | 4890 | void e1000_reset_adaptive(struct e1000_hw *hw) |
1da177e4 | 4891 | { |
675ad473 | 4892 | e_dbg("e1000_reset_adaptive"); |
120a5d0d JB |
4893 | |
4894 | if (hw->adaptive_ifs) { | |
4895 | if (!hw->ifs_params_forced) { | |
4896 | hw->current_ifs_val = 0; | |
4897 | hw->ifs_min_val = IFS_MIN; | |
4898 | hw->ifs_max_val = IFS_MAX; | |
4899 | hw->ifs_step_size = IFS_STEP; | |
4900 | hw->ifs_ratio = IFS_RATIO; | |
4901 | } | |
4902 | hw->in_ifs_mode = false; | |
4903 | ew32(AIT, 0); | |
4904 | } else { | |
675ad473 | 4905 | e_dbg("Not in Adaptive IFS mode!\n"); |
120a5d0d | 4906 | } |
1da177e4 LT |
4907 | } |
4908 | ||
120a5d0d JB |
4909 | /** |
4910 | * e1000_update_adaptive - update adaptive IFS | |
4911 | * @hw: Struct containing variables accessed by shared code | |
4912 | * @tx_packets: Number of transmits since last callback | |
4913 | * @total_collisions: Number of collisions since last callback | |
4914 | * | |
1da177e4 LT |
4915 | * Called during the callback/watchdog routine to update IFS value based on |
4916 | * the ratio of transmits to collisions. | |
120a5d0d | 4917 | */ |
64798845 | 4918 | void e1000_update_adaptive(struct e1000_hw *hw) |
1da177e4 | 4919 | { |
675ad473 | 4920 | e_dbg("e1000_update_adaptive"); |
120a5d0d JB |
4921 | |
4922 | if (hw->adaptive_ifs) { | |
4923 | if ((hw->collision_delta *hw->ifs_ratio) > hw->tx_packet_delta) { | |
4924 | if (hw->tx_packet_delta > MIN_NUM_XMITS) { | |
4925 | hw->in_ifs_mode = true; | |
4926 | if (hw->current_ifs_val < hw->ifs_max_val) { | |
4927 | if (hw->current_ifs_val == 0) | |
4928 | hw->current_ifs_val = | |
4929 | hw->ifs_min_val; | |
4930 | else | |
4931 | hw->current_ifs_val += | |
4932 | hw->ifs_step_size; | |
4933 | ew32(AIT, hw->current_ifs_val); | |
4934 | } | |
4935 | } | |
4936 | } else { | |
4937 | if (hw->in_ifs_mode | |
4938 | && (hw->tx_packet_delta <= MIN_NUM_XMITS)) { | |
4939 | hw->current_ifs_val = 0; | |
4940 | hw->in_ifs_mode = false; | |
4941 | ew32(AIT, 0); | |
4942 | } | |
4943 | } | |
4944 | } else { | |
675ad473 | 4945 | e_dbg("Not in Adaptive IFS mode!\n"); |
120a5d0d | 4946 | } |
1da177e4 LT |
4947 | } |
4948 | ||
120a5d0d JB |
4949 | /** |
4950 | * e1000_tbi_adjust_stats | |
4951 | * @hw: Struct containing variables accessed by shared code | |
4952 | * @frame_len: The length of the frame in question | |
4953 | * @mac_addr: The Ethernet destination address of the frame in question | |
1da177e4 | 4954 | * |
120a5d0d JB |
4955 | * Adjusts the statistic counters when a frame is accepted by TBI_ACCEPT |
4956 | */ | |
64798845 JP |
4957 | void e1000_tbi_adjust_stats(struct e1000_hw *hw, struct e1000_hw_stats *stats, |
4958 | u32 frame_len, u8 *mac_addr) | |
1da177e4 | 4959 | { |
120a5d0d JB |
4960 | u64 carry_bit; |
4961 | ||
4962 | /* First adjust the frame length. */ | |
4963 | frame_len--; | |
4964 | /* We need to adjust the statistics counters, since the hardware | |
4965 | * counters overcount this packet as a CRC error and undercount | |
4966 | * the packet as a good packet | |
4967 | */ | |
6cfbd97b | 4968 | /* This packet should not be counted as a CRC error. */ |
120a5d0d | 4969 | stats->crcerrs--; |
6cfbd97b | 4970 | /* This packet does count as a Good Packet Received. */ |
120a5d0d JB |
4971 | stats->gprc++; |
4972 | ||
6cfbd97b | 4973 | /* Adjust the Good Octets received counters */ |
120a5d0d JB |
4974 | carry_bit = 0x80000000 & stats->gorcl; |
4975 | stats->gorcl += frame_len; | |
4976 | /* If the high bit of Gorcl (the low 32 bits of the Good Octets | |
4977 | * Received Count) was one before the addition, | |
4978 | * AND it is zero after, then we lost the carry out, | |
4979 | * need to add one to Gorch (Good Octets Received Count High). | |
4980 | * This could be simplified if all environments supported | |
4981 | * 64-bit integers. | |
4982 | */ | |
4983 | if (carry_bit && ((stats->gorcl & 0x80000000) == 0)) | |
4984 | stats->gorch++; | |
4985 | /* Is this a broadcast or multicast? Check broadcast first, | |
4986 | * since the test for a multicast frame will test positive on | |
4987 | * a broadcast frame. | |
4988 | */ | |
4989 | if ((mac_addr[0] == (u8) 0xff) && (mac_addr[1] == (u8) 0xff)) | |
4990 | /* Broadcast packet */ | |
4991 | stats->bprc++; | |
4992 | else if (*mac_addr & 0x01) | |
4993 | /* Multicast packet */ | |
4994 | stats->mprc++; | |
4995 | ||
4996 | if (frame_len == hw->max_frame_size) { | |
4997 | /* In this case, the hardware has overcounted the number of | |
4998 | * oversize frames. | |
4999 | */ | |
5000 | if (stats->roc > 0) | |
5001 | stats->roc--; | |
5002 | } | |
5003 | ||
5004 | /* Adjust the bin counters when the extra byte put the frame in the | |
5005 | * wrong bin. Remember that the frame_len was adjusted above. | |
5006 | */ | |
5007 | if (frame_len == 64) { | |
5008 | stats->prc64++; | |
5009 | stats->prc127--; | |
5010 | } else if (frame_len == 127) { | |
5011 | stats->prc127++; | |
5012 | stats->prc255--; | |
5013 | } else if (frame_len == 255) { | |
5014 | stats->prc255++; | |
5015 | stats->prc511--; | |
5016 | } else if (frame_len == 511) { | |
5017 | stats->prc511++; | |
5018 | stats->prc1023--; | |
5019 | } else if (frame_len == 1023) { | |
5020 | stats->prc1023++; | |
5021 | stats->prc1522--; | |
5022 | } else if (frame_len == 1522) { | |
5023 | stats->prc1522++; | |
5024 | } | |
1da177e4 LT |
5025 | } |
5026 | ||
120a5d0d JB |
5027 | /** |
5028 | * e1000_get_bus_info | |
5029 | * @hw: Struct containing variables accessed by shared code | |
1da177e4 | 5030 | * |
120a5d0d JB |
5031 | * Gets the current PCI bus type, speed, and width of the hardware |
5032 | */ | |
64798845 | 5033 | void e1000_get_bus_info(struct e1000_hw *hw) |
1da177e4 | 5034 | { |
120a5d0d JB |
5035 | u32 status; |
5036 | ||
5037 | switch (hw->mac_type) { | |
5038 | case e1000_82542_rev2_0: | |
5039 | case e1000_82542_rev2_1: | |
5040 | hw->bus_type = e1000_bus_type_pci; | |
5041 | hw->bus_speed = e1000_bus_speed_unknown; | |
5042 | hw->bus_width = e1000_bus_width_unknown; | |
5043 | break; | |
5044 | default: | |
5045 | status = er32(STATUS); | |
5046 | hw->bus_type = (status & E1000_STATUS_PCIX_MODE) ? | |
5047 | e1000_bus_type_pcix : e1000_bus_type_pci; | |
5048 | ||
5049 | if (hw->device_id == E1000_DEV_ID_82546EB_QUAD_COPPER) { | |
5050 | hw->bus_speed = (hw->bus_type == e1000_bus_type_pci) ? | |
5051 | e1000_bus_speed_66 : e1000_bus_speed_120; | |
5052 | } else if (hw->bus_type == e1000_bus_type_pci) { | |
5053 | hw->bus_speed = (status & E1000_STATUS_PCI66) ? | |
5054 | e1000_bus_speed_66 : e1000_bus_speed_33; | |
5055 | } else { | |
5056 | switch (status & E1000_STATUS_PCIX_SPEED) { | |
5057 | case E1000_STATUS_PCIX_SPEED_66: | |
5058 | hw->bus_speed = e1000_bus_speed_66; | |
5059 | break; | |
5060 | case E1000_STATUS_PCIX_SPEED_100: | |
5061 | hw->bus_speed = e1000_bus_speed_100; | |
5062 | break; | |
5063 | case E1000_STATUS_PCIX_SPEED_133: | |
5064 | hw->bus_speed = e1000_bus_speed_133; | |
5065 | break; | |
5066 | default: | |
5067 | hw->bus_speed = e1000_bus_speed_reserved; | |
5068 | break; | |
5069 | } | |
5070 | } | |
5071 | hw->bus_width = (status & E1000_STATUS_BUS64) ? | |
5072 | e1000_bus_width_64 : e1000_bus_width_32; | |
5073 | break; | |
5074 | } | |
1da177e4 | 5075 | } |
1da177e4 | 5076 | |
120a5d0d JB |
5077 | /** |
5078 | * e1000_write_reg_io | |
5079 | * @hw: Struct containing variables accessed by shared code | |
5080 | * @offset: offset to write to | |
5081 | * @value: value to write | |
5082 | * | |
1da177e4 LT |
5083 | * Writes a value to one of the devices registers using port I/O (as opposed to |
5084 | * memory mapped I/O). Only 82544 and newer devices support port I/O. | |
120a5d0d | 5085 | */ |
64798845 | 5086 | static void e1000_write_reg_io(struct e1000_hw *hw, u32 offset, u32 value) |
1da177e4 | 5087 | { |
120a5d0d JB |
5088 | unsigned long io_addr = hw->io_base; |
5089 | unsigned long io_data = hw->io_base + 4; | |
1da177e4 | 5090 | |
120a5d0d JB |
5091 | e1000_io_write(hw, io_addr, offset); |
5092 | e1000_io_write(hw, io_data, value); | |
1da177e4 LT |
5093 | } |
5094 | ||
120a5d0d JB |
5095 | /** |
5096 | * e1000_get_cable_length - Estimates the cable length. | |
5097 | * @hw: Struct containing variables accessed by shared code | |
5098 | * @min_length: The estimated minimum length | |
5099 | * @max_length: The estimated maximum length | |
1da177e4 LT |
5100 | * |
5101 | * returns: - E1000_ERR_XXX | |
5102 | * E1000_SUCCESS | |
5103 | * | |
5104 | * This function always returns a ranged length (minimum & maximum). | |
5105 | * So for M88 phy's, this function interprets the one value returned from the | |
5106 | * register to the minimum and maximum range. | |
5107 | * For IGP phy's, the function calculates the range by the AGC registers. | |
120a5d0d | 5108 | */ |
64798845 JP |
5109 | static s32 e1000_get_cable_length(struct e1000_hw *hw, u16 *min_length, |
5110 | u16 *max_length) | |
1da177e4 | 5111 | { |
120a5d0d JB |
5112 | s32 ret_val; |
5113 | u16 agc_value = 0; | |
5114 | u16 i, phy_data; | |
5115 | u16 cable_length; | |
5116 | ||
675ad473 | 5117 | e_dbg("e1000_get_cable_length"); |
120a5d0d JB |
5118 | |
5119 | *min_length = *max_length = 0; | |
5120 | ||
5121 | /* Use old method for Phy older than IGP */ | |
5122 | if (hw->phy_type == e1000_phy_m88) { | |
5123 | ||
5124 | ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS, | |
5125 | &phy_data); | |
5126 | if (ret_val) | |
5127 | return ret_val; | |
5128 | cable_length = (phy_data & M88E1000_PSSR_CABLE_LENGTH) >> | |
5129 | M88E1000_PSSR_CABLE_LENGTH_SHIFT; | |
5130 | ||
5131 | /* Convert the enum value to ranged values */ | |
5132 | switch (cable_length) { | |
5133 | case e1000_cable_length_50: | |
5134 | *min_length = 0; | |
5135 | *max_length = e1000_igp_cable_length_50; | |
5136 | break; | |
5137 | case e1000_cable_length_50_80: | |
5138 | *min_length = e1000_igp_cable_length_50; | |
5139 | *max_length = e1000_igp_cable_length_80; | |
5140 | break; | |
5141 | case e1000_cable_length_80_110: | |
5142 | *min_length = e1000_igp_cable_length_80; | |
5143 | *max_length = e1000_igp_cable_length_110; | |
5144 | break; | |
5145 | case e1000_cable_length_110_140: | |
5146 | *min_length = e1000_igp_cable_length_110; | |
5147 | *max_length = e1000_igp_cable_length_140; | |
5148 | break; | |
5149 | case e1000_cable_length_140: | |
5150 | *min_length = e1000_igp_cable_length_140; | |
5151 | *max_length = e1000_igp_cable_length_170; | |
5152 | break; | |
5153 | default: | |
5154 | return -E1000_ERR_PHY; | |
5155 | break; | |
5156 | } | |
5157 | } else if (hw->phy_type == e1000_phy_igp) { /* For IGP PHY */ | |
5158 | u16 cur_agc_value; | |
5159 | u16 min_agc_value = IGP01E1000_AGC_LENGTH_TABLE_SIZE; | |
66744500 JK |
5160 | static const u16 agc_reg_array[IGP01E1000_PHY_CHANNEL_NUM] = { |
5161 | IGP01E1000_PHY_AGC_A, | |
5162 | IGP01E1000_PHY_AGC_B, | |
5163 | IGP01E1000_PHY_AGC_C, | |
5164 | IGP01E1000_PHY_AGC_D | |
120a5d0d JB |
5165 | }; |
5166 | /* Read the AGC registers for all channels */ | |
5167 | for (i = 0; i < IGP01E1000_PHY_CHANNEL_NUM; i++) { | |
5168 | ||
5169 | ret_val = | |
5170 | e1000_read_phy_reg(hw, agc_reg_array[i], &phy_data); | |
5171 | if (ret_val) | |
5172 | return ret_val; | |
5173 | ||
5174 | cur_agc_value = phy_data >> IGP01E1000_AGC_LENGTH_SHIFT; | |
5175 | ||
5176 | /* Value bound check. */ | |
5177 | if ((cur_agc_value >= | |
5178 | IGP01E1000_AGC_LENGTH_TABLE_SIZE - 1) | |
5179 | || (cur_agc_value == 0)) | |
5180 | return -E1000_ERR_PHY; | |
5181 | ||
5182 | agc_value += cur_agc_value; | |
5183 | ||
5184 | /* Update minimal AGC value. */ | |
5185 | if (min_agc_value > cur_agc_value) | |
5186 | min_agc_value = cur_agc_value; | |
5187 | } | |
5188 | ||
5189 | /* Remove the minimal AGC result for length < 50m */ | |
5190 | if (agc_value < | |
5191 | IGP01E1000_PHY_CHANNEL_NUM * e1000_igp_cable_length_50) { | |
5192 | agc_value -= min_agc_value; | |
5193 | ||
5194 | /* Get the average length of the remaining 3 channels */ | |
5195 | agc_value /= (IGP01E1000_PHY_CHANNEL_NUM - 1); | |
5196 | } else { | |
5197 | /* Get the average length of all the 4 channels. */ | |
5198 | agc_value /= IGP01E1000_PHY_CHANNEL_NUM; | |
5199 | } | |
5200 | ||
5201 | /* Set the range of the calculated length. */ | |
5202 | *min_length = ((e1000_igp_cable_length_table[agc_value] - | |
5203 | IGP01E1000_AGC_RANGE) > 0) ? | |
5204 | (e1000_igp_cable_length_table[agc_value] - | |
5205 | IGP01E1000_AGC_RANGE) : 0; | |
5206 | *max_length = e1000_igp_cable_length_table[agc_value] + | |
5207 | IGP01E1000_AGC_RANGE; | |
5208 | } | |
5209 | ||
5210 | return E1000_SUCCESS; | |
1da177e4 LT |
5211 | } |
5212 | ||
120a5d0d JB |
5213 | /** |
5214 | * e1000_check_polarity - Check the cable polarity | |
5215 | * @hw: Struct containing variables accessed by shared code | |
5216 | * @polarity: output parameter : 0 - Polarity is not reversed | |
1da177e4 LT |
5217 | * 1 - Polarity is reversed. |
5218 | * | |
5219 | * returns: - E1000_ERR_XXX | |
5220 | * E1000_SUCCESS | |
5221 | * | |
025dfdaf | 5222 | * For phy's older than IGP, this function simply reads the polarity bit in the |
1da177e4 LT |
5223 | * Phy Status register. For IGP phy's, this bit is valid only if link speed is |
5224 | * 10 Mbps. If the link speed is 100 Mbps there is no polarity so this bit will | |
5225 | * return 0. If the link speed is 1000 Mbps the polarity status is in the | |
5226 | * IGP01E1000_PHY_PCS_INIT_REG. | |
120a5d0d | 5227 | */ |
64798845 JP |
5228 | static s32 e1000_check_polarity(struct e1000_hw *hw, |
5229 | e1000_rev_polarity *polarity) | |
1da177e4 | 5230 | { |
120a5d0d JB |
5231 | s32 ret_val; |
5232 | u16 phy_data; | |
5233 | ||
675ad473 | 5234 | e_dbg("e1000_check_polarity"); |
120a5d0d JB |
5235 | |
5236 | if (hw->phy_type == e1000_phy_m88) { | |
5237 | /* return the Polarity bit in the Status register. */ | |
5238 | ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS, | |
5239 | &phy_data); | |
5240 | if (ret_val) | |
5241 | return ret_val; | |
5242 | *polarity = ((phy_data & M88E1000_PSSR_REV_POLARITY) >> | |
5243 | M88E1000_PSSR_REV_POLARITY_SHIFT) ? | |
5244 | e1000_rev_polarity_reversed : e1000_rev_polarity_normal; | |
5245 | ||
5246 | } else if (hw->phy_type == e1000_phy_igp) { | |
5247 | /* Read the Status register to check the speed */ | |
5248 | ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_STATUS, | |
5249 | &phy_data); | |
5250 | if (ret_val) | |
5251 | return ret_val; | |
5252 | ||
6cfbd97b JK |
5253 | /* If speed is 1000 Mbps, must read the |
5254 | * IGP01E1000_PHY_PCS_INIT_REG to find the polarity status | |
5255 | */ | |
120a5d0d JB |
5256 | if ((phy_data & IGP01E1000_PSSR_SPEED_MASK) == |
5257 | IGP01E1000_PSSR_SPEED_1000MBPS) { | |
5258 | ||
5259 | /* Read the GIG initialization PCS register (0x00B4) */ | |
5260 | ret_val = | |
5261 | e1000_read_phy_reg(hw, IGP01E1000_PHY_PCS_INIT_REG, | |
5262 | &phy_data); | |
5263 | if (ret_val) | |
5264 | return ret_val; | |
5265 | ||
5266 | /* Check the polarity bits */ | |
5267 | *polarity = (phy_data & IGP01E1000_PHY_POLARITY_MASK) ? | |
5268 | e1000_rev_polarity_reversed : | |
5269 | e1000_rev_polarity_normal; | |
5270 | } else { | |
6cfbd97b JK |
5271 | /* For 10 Mbps, read the polarity bit in the status |
5272 | * register. (for 100 Mbps this bit is always 0) | |
5273 | */ | |
120a5d0d JB |
5274 | *polarity = |
5275 | (phy_data & IGP01E1000_PSSR_POLARITY_REVERSED) ? | |
5276 | e1000_rev_polarity_reversed : | |
5277 | e1000_rev_polarity_normal; | |
5278 | } | |
5279 | } | |
5280 | return E1000_SUCCESS; | |
1da177e4 LT |
5281 | } |
5282 | ||
120a5d0d JB |
5283 | /** |
5284 | * e1000_check_downshift - Check if Downshift occurred | |
5285 | * @hw: Struct containing variables accessed by shared code | |
5286 | * @downshift: output parameter : 0 - No Downshift occurred. | |
5287 | * 1 - Downshift occurred. | |
1da177e4 LT |
5288 | * |
5289 | * returns: - E1000_ERR_XXX | |
76c224bc | 5290 | * E1000_SUCCESS |
1da177e4 | 5291 | * |
025dfdaf | 5292 | * For phy's older than IGP, this function reads the Downshift bit in the Phy |
1da177e4 LT |
5293 | * Specific Status register. For IGP phy's, it reads the Downgrade bit in the |
5294 | * Link Health register. In IGP this bit is latched high, so the driver must | |
5295 | * read it immediately after link is established. | |
120a5d0d | 5296 | */ |
64798845 | 5297 | static s32 e1000_check_downshift(struct e1000_hw *hw) |
1da177e4 | 5298 | { |
120a5d0d JB |
5299 | s32 ret_val; |
5300 | u16 phy_data; | |
5301 | ||
675ad473 | 5302 | e_dbg("e1000_check_downshift"); |
120a5d0d JB |
5303 | |
5304 | if (hw->phy_type == e1000_phy_igp) { | |
5305 | ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_LINK_HEALTH, | |
5306 | &phy_data); | |
5307 | if (ret_val) | |
5308 | return ret_val; | |
5309 | ||
5310 | hw->speed_downgraded = | |
5311 | (phy_data & IGP01E1000_PLHR_SS_DOWNGRADE) ? 1 : 0; | |
5312 | } else if (hw->phy_type == e1000_phy_m88) { | |
5313 | ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS, | |
5314 | &phy_data); | |
5315 | if (ret_val) | |
5316 | return ret_val; | |
5317 | ||
5318 | hw->speed_downgraded = (phy_data & M88E1000_PSSR_DOWNSHIFT) >> | |
5319 | M88E1000_PSSR_DOWNSHIFT_SHIFT; | |
5320 | } | |
2d7edb92 | 5321 | |
120a5d0d | 5322 | return E1000_SUCCESS; |
1da177e4 LT |
5323 | } |
5324 | ||
542c3f4e JP |
5325 | static const u16 dsp_reg_array[IGP01E1000_PHY_CHANNEL_NUM] = { |
5326 | IGP01E1000_PHY_AGC_PARAM_A, | |
5327 | IGP01E1000_PHY_AGC_PARAM_B, | |
5328 | IGP01E1000_PHY_AGC_PARAM_C, | |
5329 | IGP01E1000_PHY_AGC_PARAM_D | |
5330 | }; | |
5331 | ||
5332 | static s32 e1000_1000Mb_check_cable_length(struct e1000_hw *hw) | |
5333 | { | |
5334 | u16 min_length, max_length; | |
5335 | u16 phy_data, i; | |
5336 | s32 ret_val; | |
5337 | ||
5338 | ret_val = e1000_get_cable_length(hw, &min_length, &max_length); | |
5339 | if (ret_val) | |
5340 | return ret_val; | |
5341 | ||
5342 | if (hw->dsp_config_state != e1000_dsp_config_enabled) | |
5343 | return 0; | |
5344 | ||
5345 | if (min_length >= e1000_igp_cable_length_50) { | |
5346 | for (i = 0; i < IGP01E1000_PHY_CHANNEL_NUM; i++) { | |
5347 | ret_val = e1000_read_phy_reg(hw, dsp_reg_array[i], | |
5348 | &phy_data); | |
5349 | if (ret_val) | |
5350 | return ret_val; | |
5351 | ||
5352 | phy_data &= ~IGP01E1000_PHY_EDAC_MU_INDEX; | |
5353 | ||
5354 | ret_val = e1000_write_phy_reg(hw, dsp_reg_array[i], | |
5355 | phy_data); | |
5356 | if (ret_val) | |
5357 | return ret_val; | |
5358 | } | |
5359 | hw->dsp_config_state = e1000_dsp_config_activated; | |
5360 | } else { | |
5361 | u16 ffe_idle_err_timeout = FFE_IDLE_ERR_COUNT_TIMEOUT_20; | |
5362 | u32 idle_errs = 0; | |
5363 | ||
5364 | /* clear previous idle error counts */ | |
5365 | ret_val = e1000_read_phy_reg(hw, PHY_1000T_STATUS, &phy_data); | |
5366 | if (ret_val) | |
5367 | return ret_val; | |
5368 | ||
5369 | for (i = 0; i < ffe_idle_err_timeout; i++) { | |
5370 | udelay(1000); | |
5371 | ret_val = e1000_read_phy_reg(hw, PHY_1000T_STATUS, | |
5372 | &phy_data); | |
5373 | if (ret_val) | |
5374 | return ret_val; | |
5375 | ||
5376 | idle_errs += (phy_data & SR_1000T_IDLE_ERROR_CNT); | |
5377 | if (idle_errs > SR_1000T_PHY_EXCESSIVE_IDLE_ERR_COUNT) { | |
5378 | hw->ffe_config_state = e1000_ffe_config_active; | |
5379 | ||
5380 | ret_val = e1000_write_phy_reg(hw, | |
5381 | IGP01E1000_PHY_DSP_FFE, | |
5382 | IGP01E1000_PHY_DSP_FFE_CM_CP); | |
5383 | if (ret_val) | |
5384 | return ret_val; | |
5385 | break; | |
5386 | } | |
5387 | ||
5388 | if (idle_errs) | |
5389 | ffe_idle_err_timeout = | |
5390 | FFE_IDLE_ERR_COUNT_TIMEOUT_100; | |
5391 | } | |
5392 | } | |
5393 | ||
5394 | return 0; | |
5395 | } | |
5396 | ||
120a5d0d JB |
5397 | /** |
5398 | * e1000_config_dsp_after_link_change | |
5399 | * @hw: Struct containing variables accessed by shared code | |
5400 | * @link_up: was link up at the time this was called | |
1da177e4 LT |
5401 | * |
5402 | * returns: - E1000_ERR_PHY if fail to read/write the PHY | |
5403 | * E1000_SUCCESS at any other case. | |
5404 | * | |
120a5d0d JB |
5405 | * 82541_rev_2 & 82547_rev_2 have the capability to configure the DSP when a |
5406 | * gigabit link is achieved to improve link quality. | |
5407 | */ | |
1da177e4 | 5408 | |
64798845 | 5409 | static s32 e1000_config_dsp_after_link_change(struct e1000_hw *hw, bool link_up) |
1da177e4 | 5410 | { |
120a5d0d JB |
5411 | s32 ret_val; |
5412 | u16 phy_data, phy_saved_data, speed, duplex, i; | |
120a5d0d | 5413 | |
675ad473 | 5414 | e_dbg("e1000_config_dsp_after_link_change"); |
120a5d0d JB |
5415 | |
5416 | if (hw->phy_type != e1000_phy_igp) | |
5417 | return E1000_SUCCESS; | |
5418 | ||
5419 | if (link_up) { | |
5420 | ret_val = e1000_get_speed_and_duplex(hw, &speed, &duplex); | |
5421 | if (ret_val) { | |
675ad473 | 5422 | e_dbg("Error getting link speed and duplex\n"); |
120a5d0d JB |
5423 | return ret_val; |
5424 | } | |
5425 | ||
5426 | if (speed == SPEED_1000) { | |
542c3f4e | 5427 | ret_val = e1000_1000Mb_check_cable_length(hw); |
120a5d0d JB |
5428 | if (ret_val) |
5429 | return ret_val; | |
120a5d0d JB |
5430 | } |
5431 | } else { | |
5432 | if (hw->dsp_config_state == e1000_dsp_config_activated) { | |
6cfbd97b JK |
5433 | /* Save off the current value of register 0x2F5B to be |
5434 | * restored at the end of the routines. | |
5435 | */ | |
120a5d0d JB |
5436 | ret_val = |
5437 | e1000_read_phy_reg(hw, 0x2F5B, &phy_saved_data); | |
5438 | ||
5439 | if (ret_val) | |
5440 | return ret_val; | |
5441 | ||
5442 | /* Disable the PHY transmitter */ | |
5443 | ret_val = e1000_write_phy_reg(hw, 0x2F5B, 0x0003); | |
5444 | ||
5445 | if (ret_val) | |
5446 | return ret_val; | |
5447 | ||
4e0d8f7d | 5448 | msleep(20); |
120a5d0d JB |
5449 | |
5450 | ret_val = e1000_write_phy_reg(hw, 0x0000, | |
6cfbd97b | 5451 | IGP01E1000_IEEE_FORCE_GIGA); |
120a5d0d JB |
5452 | if (ret_val) |
5453 | return ret_val; | |
5454 | for (i = 0; i < IGP01E1000_PHY_CHANNEL_NUM; i++) { | |
5455 | ret_val = | |
5456 | e1000_read_phy_reg(hw, dsp_reg_array[i], | |
5457 | &phy_data); | |
5458 | if (ret_val) | |
5459 | return ret_val; | |
5460 | ||
5461 | phy_data &= ~IGP01E1000_PHY_EDAC_MU_INDEX; | |
5462 | phy_data |= IGP01E1000_PHY_EDAC_SIGN_EXT_9_BITS; | |
5463 | ||
5464 | ret_val = | |
5465 | e1000_write_phy_reg(hw, dsp_reg_array[i], | |
5466 | phy_data); | |
5467 | if (ret_val) | |
5468 | return ret_val; | |
5469 | } | |
5470 | ||
5471 | ret_val = e1000_write_phy_reg(hw, 0x0000, | |
6cfbd97b | 5472 | IGP01E1000_IEEE_RESTART_AUTONEG); |
120a5d0d JB |
5473 | if (ret_val) |
5474 | return ret_val; | |
5475 | ||
4e0d8f7d | 5476 | msleep(20); |
120a5d0d JB |
5477 | |
5478 | /* Now enable the transmitter */ | |
5479 | ret_val = | |
5480 | e1000_write_phy_reg(hw, 0x2F5B, phy_saved_data); | |
5481 | ||
5482 | if (ret_val) | |
5483 | return ret_val; | |
5484 | ||
5485 | hw->dsp_config_state = e1000_dsp_config_enabled; | |
5486 | } | |
5487 | ||
5488 | if (hw->ffe_config_state == e1000_ffe_config_active) { | |
6cfbd97b JK |
5489 | /* Save off the current value of register 0x2F5B to be |
5490 | * restored at the end of the routines. | |
5491 | */ | |
120a5d0d JB |
5492 | ret_val = |
5493 | e1000_read_phy_reg(hw, 0x2F5B, &phy_saved_data); | |
5494 | ||
5495 | if (ret_val) | |
5496 | return ret_val; | |
5497 | ||
5498 | /* Disable the PHY transmitter */ | |
5499 | ret_val = e1000_write_phy_reg(hw, 0x2F5B, 0x0003); | |
5500 | ||
5501 | if (ret_val) | |
5502 | return ret_val; | |
5503 | ||
4e0d8f7d | 5504 | msleep(20); |
120a5d0d JB |
5505 | |
5506 | ret_val = e1000_write_phy_reg(hw, 0x0000, | |
6cfbd97b | 5507 | IGP01E1000_IEEE_FORCE_GIGA); |
120a5d0d JB |
5508 | if (ret_val) |
5509 | return ret_val; | |
5510 | ret_val = | |
5511 | e1000_write_phy_reg(hw, IGP01E1000_PHY_DSP_FFE, | |
5512 | IGP01E1000_PHY_DSP_FFE_DEFAULT); | |
5513 | if (ret_val) | |
5514 | return ret_val; | |
5515 | ||
5516 | ret_val = e1000_write_phy_reg(hw, 0x0000, | |
6cfbd97b | 5517 | IGP01E1000_IEEE_RESTART_AUTONEG); |
120a5d0d JB |
5518 | if (ret_val) |
5519 | return ret_val; | |
5520 | ||
4e0d8f7d | 5521 | msleep(20); |
120a5d0d JB |
5522 | |
5523 | /* Now enable the transmitter */ | |
5524 | ret_val = | |
5525 | e1000_write_phy_reg(hw, 0x2F5B, phy_saved_data); | |
5526 | ||
5527 | if (ret_val) | |
5528 | return ret_val; | |
5529 | ||
5530 | hw->ffe_config_state = e1000_ffe_config_enabled; | |
5531 | } | |
5532 | } | |
5533 | return E1000_SUCCESS; | |
1da177e4 LT |
5534 | } |
5535 | ||
120a5d0d JB |
5536 | /** |
5537 | * e1000_set_phy_mode - Set PHY to class A mode | |
5538 | * @hw: Struct containing variables accessed by shared code | |
5539 | * | |
1da177e4 LT |
5540 | * Assumes the following operations will follow to enable the new class mode. |
5541 | * 1. Do a PHY soft reset | |
5542 | * 2. Restart auto-negotiation or force link. | |
120a5d0d | 5543 | */ |
64798845 | 5544 | static s32 e1000_set_phy_mode(struct e1000_hw *hw) |
1da177e4 | 5545 | { |
120a5d0d JB |
5546 | s32 ret_val; |
5547 | u16 eeprom_data; | |
5548 | ||
675ad473 | 5549 | e_dbg("e1000_set_phy_mode"); |
120a5d0d JB |
5550 | |
5551 | if ((hw->mac_type == e1000_82545_rev_3) && | |
5552 | (hw->media_type == e1000_media_type_copper)) { | |
5553 | ret_val = | |
5554 | e1000_read_eeprom(hw, EEPROM_PHY_CLASS_WORD, 1, | |
5555 | &eeprom_data); | |
5556 | if (ret_val) { | |
5557 | return ret_val; | |
5558 | } | |
5559 | ||
5560 | if ((eeprom_data != EEPROM_RESERVED_WORD) && | |
5561 | (eeprom_data & EEPROM_PHY_CLASS_A)) { | |
5562 | ret_val = | |
5563 | e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, | |
5564 | 0x000B); | |
5565 | if (ret_val) | |
5566 | return ret_val; | |
5567 | ret_val = | |
5568 | e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, | |
5569 | 0x8104); | |
5570 | if (ret_val) | |
5571 | return ret_val; | |
5572 | ||
5573 | hw->phy_reset_disable = false; | |
5574 | } | |
5575 | } | |
5576 | ||
5577 | return E1000_SUCCESS; | |
1da177e4 LT |
5578 | } |
5579 | ||
120a5d0d JB |
5580 | /** |
5581 | * e1000_set_d3_lplu_state - set d3 link power state | |
5582 | * @hw: Struct containing variables accessed by shared code | |
5583 | * @active: true to enable lplu false to disable lplu. | |
1da177e4 LT |
5584 | * |
5585 | * This function sets the lplu state according to the active flag. When | |
5586 | * activating lplu this function also disables smart speed and vise versa. | |
120a5d0d | 5587 | * lplu will not be activated unless the device autonegotiation advertisement |
1da177e4 | 5588 | * meets standards of either 10 or 10/100 or 10/100/1000 at all duplexes. |
1da177e4 LT |
5589 | * |
5590 | * returns: - E1000_ERR_PHY if fail to read/write the PHY | |
5591 | * E1000_SUCCESS at any other case. | |
120a5d0d | 5592 | */ |
64798845 | 5593 | static s32 e1000_set_d3_lplu_state(struct e1000_hw *hw, bool active) |
1da177e4 | 5594 | { |
120a5d0d JB |
5595 | s32 ret_val; |
5596 | u16 phy_data; | |
675ad473 | 5597 | e_dbg("e1000_set_d3_lplu_state"); |
120a5d0d JB |
5598 | |
5599 | if (hw->phy_type != e1000_phy_igp) | |
5600 | return E1000_SUCCESS; | |
5601 | ||
5602 | /* During driver activity LPLU should not be used or it will attain link | |
6cfbd97b JK |
5603 | * from the lowest speeds starting from 10Mbps. The capability is used |
5604 | * for Dx transitions and states | |
5605 | */ | |
120a5d0d JB |
5606 | if (hw->mac_type == e1000_82541_rev_2 |
5607 | || hw->mac_type == e1000_82547_rev_2) { | |
5608 | ret_val = | |
5609 | e1000_read_phy_reg(hw, IGP01E1000_GMII_FIFO, &phy_data); | |
5610 | if (ret_val) | |
5611 | return ret_val; | |
5612 | } | |
5613 | ||
5614 | if (!active) { | |
5615 | if (hw->mac_type == e1000_82541_rev_2 || | |
5616 | hw->mac_type == e1000_82547_rev_2) { | |
5617 | phy_data &= ~IGP01E1000_GMII_FLEX_SPD; | |
5618 | ret_val = | |
5619 | e1000_write_phy_reg(hw, IGP01E1000_GMII_FIFO, | |
5620 | phy_data); | |
5621 | if (ret_val) | |
5622 | return ret_val; | |
5623 | } | |
5624 | ||
6cfbd97b JK |
5625 | /* LPLU and SmartSpeed are mutually exclusive. LPLU is used |
5626 | * during Dx states where the power conservation is most | |
5627 | * important. During driver activity we should enable | |
5628 | * SmartSpeed, so performance is maintained. | |
5629 | */ | |
120a5d0d JB |
5630 | if (hw->smart_speed == e1000_smart_speed_on) { |
5631 | ret_val = | |
5632 | e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, | |
5633 | &phy_data); | |
5634 | if (ret_val) | |
5635 | return ret_val; | |
5636 | ||
5637 | phy_data |= IGP01E1000_PSCFR_SMART_SPEED; | |
5638 | ret_val = | |
5639 | e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, | |
5640 | phy_data); | |
5641 | if (ret_val) | |
5642 | return ret_val; | |
5643 | } else if (hw->smart_speed == e1000_smart_speed_off) { | |
5644 | ret_val = | |
5645 | e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, | |
5646 | &phy_data); | |
5647 | if (ret_val) | |
5648 | return ret_val; | |
5649 | ||
5650 | phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED; | |
5651 | ret_val = | |
5652 | e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, | |
5653 | phy_data); | |
5654 | if (ret_val) | |
5655 | return ret_val; | |
5656 | } | |
5657 | } else if ((hw->autoneg_advertised == AUTONEG_ADVERTISE_SPEED_DEFAULT) | |
5658 | || (hw->autoneg_advertised == AUTONEG_ADVERTISE_10_ALL) | |
5659 | || (hw->autoneg_advertised == | |
5660 | AUTONEG_ADVERTISE_10_100_ALL)) { | |
5661 | ||
5662 | if (hw->mac_type == e1000_82541_rev_2 || | |
5663 | hw->mac_type == e1000_82547_rev_2) { | |
5664 | phy_data |= IGP01E1000_GMII_FLEX_SPD; | |
5665 | ret_val = | |
5666 | e1000_write_phy_reg(hw, IGP01E1000_GMII_FIFO, | |
5667 | phy_data); | |
5668 | if (ret_val) | |
5669 | return ret_val; | |
5670 | } | |
5671 | ||
5672 | /* When LPLU is enabled we should disable SmartSpeed */ | |
5673 | ret_val = | |
5674 | e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, | |
5675 | &phy_data); | |
5676 | if (ret_val) | |
5677 | return ret_val; | |
5678 | ||
5679 | phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED; | |
5680 | ret_val = | |
5681 | e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CONFIG, | |
5682 | phy_data); | |
5683 | if (ret_val) | |
5684 | return ret_val; | |
5685 | ||
5686 | } | |
5687 | return E1000_SUCCESS; | |
2d7edb92 MC |
5688 | } |
5689 | ||
120a5d0d JB |
5690 | /** |
5691 | * e1000_set_vco_speed | |
5692 | * @hw: Struct containing variables accessed by shared code | |
2d7edb92 | 5693 | * |
120a5d0d JB |
5694 | * Change VCO speed register to improve Bit Error Rate performance of SERDES. |
5695 | */ | |
1532ecea | 5696 | static s32 e1000_set_vco_speed(struct e1000_hw *hw) |
2d7edb92 | 5697 | { |
120a5d0d JB |
5698 | s32 ret_val; |
5699 | u16 default_page = 0; | |
5700 | u16 phy_data; | |
2d7edb92 | 5701 | |
675ad473 | 5702 | e_dbg("e1000_set_vco_speed"); |
2d7edb92 | 5703 | |
120a5d0d JB |
5704 | switch (hw->mac_type) { |
5705 | case e1000_82545_rev_3: | |
5706 | case e1000_82546_rev_3: | |
5707 | break; | |
5708 | default: | |
5709 | return E1000_SUCCESS; | |
5710 | } | |
1da177e4 | 5711 | |
120a5d0d | 5712 | /* Set PHY register 30, page 5, bit 8 to 0 */ |
1da177e4 | 5713 | |
120a5d0d JB |
5714 | ret_val = |
5715 | e1000_read_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, &default_page); | |
5716 | if (ret_val) | |
5717 | return ret_val; | |
1da177e4 | 5718 | |
120a5d0d JB |
5719 | ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0005); |
5720 | if (ret_val) | |
5721 | return ret_val; | |
1da177e4 | 5722 | |
120a5d0d JB |
5723 | ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, &phy_data); |
5724 | if (ret_val) | |
5725 | return ret_val; | |
1da177e4 | 5726 | |
120a5d0d JB |
5727 | phy_data &= ~M88E1000_PHY_VCO_REG_BIT8; |
5728 | ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, phy_data); | |
5729 | if (ret_val) | |
5730 | return ret_val; | |
1da177e4 | 5731 | |
120a5d0d | 5732 | /* Set PHY register 30, page 4, bit 11 to 1 */ |
1da177e4 | 5733 | |
120a5d0d JB |
5734 | ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0004); |
5735 | if (ret_val) | |
5736 | return ret_val; | |
1da177e4 | 5737 | |
120a5d0d JB |
5738 | ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, &phy_data); |
5739 | if (ret_val) | |
5740 | return ret_val; | |
1da177e4 | 5741 | |
120a5d0d JB |
5742 | phy_data |= M88E1000_PHY_VCO_REG_BIT11; |
5743 | ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, phy_data); | |
5744 | if (ret_val) | |
5745 | return ret_val; | |
1da177e4 | 5746 | |
120a5d0d JB |
5747 | ret_val = |
5748 | e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, default_page); | |
5749 | if (ret_val) | |
5750 | return ret_val; | |
1da177e4 | 5751 | |
120a5d0d | 5752 | return E1000_SUCCESS; |
1da177e4 LT |
5753 | } |
5754 | ||
1da177e4 | 5755 | |
120a5d0d JB |
5756 | /** |
5757 | * e1000_enable_mng_pass_thru - check for bmc pass through | |
5758 | * @hw: Struct containing variables accessed by shared code | |
2d7edb92 | 5759 | * |
120a5d0d | 5760 | * Verifies the hardware needs to allow ARPs to be processed by the host |
c3033b01 | 5761 | * returns: - true/false |
120a5d0d | 5762 | */ |
64798845 | 5763 | u32 e1000_enable_mng_pass_thru(struct e1000_hw *hw) |
2d7edb92 | 5764 | { |
120a5d0d JB |
5765 | u32 manc; |
5766 | ||
5767 | if (hw->asf_firmware_present) { | |
5768 | manc = er32(MANC); | |
5769 | ||
5770 | if (!(manc & E1000_MANC_RCV_TCO_EN) || | |
5771 | !(manc & E1000_MANC_EN_MAC_ADDR_FILTER)) | |
5772 | return false; | |
5773 | if ((manc & E1000_MANC_SMBUS_EN) && !(manc & E1000_MANC_ASF_EN)) | |
5774 | return true; | |
5775 | } | |
5776 | return false; | |
2d7edb92 MC |
5777 | } |
5778 | ||
64798845 | 5779 | static s32 e1000_polarity_reversal_workaround(struct e1000_hw *hw) |
2d7edb92 | 5780 | { |
120a5d0d JB |
5781 | s32 ret_val; |
5782 | u16 mii_status_reg; | |
5783 | u16 i; | |
5784 | ||
5785 | /* Polarity reversal workaround for forced 10F/10H links. */ | |
5786 | ||
5787 | /* Disable the transmitter on the PHY */ | |
5788 | ||
5789 | ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0019); | |
5790 | if (ret_val) | |
5791 | return ret_val; | |
5792 | ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, 0xFFFF); | |
5793 | if (ret_val) | |
5794 | return ret_val; | |
5795 | ||
5796 | ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0000); | |
5797 | if (ret_val) | |
5798 | return ret_val; | |
5799 | ||
5800 | /* This loop will early-out if the NO link condition has been met. */ | |
5801 | for (i = PHY_FORCE_TIME; i > 0; i--) { | |
5802 | /* Read the MII Status Register and wait for Link Status bit | |
5803 | * to be clear. | |
5804 | */ | |
5805 | ||
5806 | ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg); | |
5807 | if (ret_val) | |
5808 | return ret_val; | |
5809 | ||
5810 | ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg); | |
5811 | if (ret_val) | |
5812 | return ret_val; | |
5813 | ||
5814 | if ((mii_status_reg & ~MII_SR_LINK_STATUS) == 0) | |
5815 | break; | |
4e0d8f7d | 5816 | msleep(100); |
120a5d0d JB |
5817 | } |
5818 | ||
5819 | /* Recommended delay time after link has been lost */ | |
4e0d8f7d | 5820 | msleep(1000); |
120a5d0d JB |
5821 | |
5822 | /* Now we will re-enable th transmitter on the PHY */ | |
5823 | ||
5824 | ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0019); | |
5825 | if (ret_val) | |
5826 | return ret_val; | |
4e0d8f7d | 5827 | msleep(50); |
120a5d0d JB |
5828 | ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, 0xFFF0); |
5829 | if (ret_val) | |
5830 | return ret_val; | |
4e0d8f7d | 5831 | msleep(50); |
120a5d0d JB |
5832 | ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, 0xFF00); |
5833 | if (ret_val) | |
5834 | return ret_val; | |
4e0d8f7d | 5835 | msleep(50); |
120a5d0d JB |
5836 | ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_GEN_CONTROL, 0x0000); |
5837 | if (ret_val) | |
5838 | return ret_val; | |
5839 | ||
5840 | ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_PAGE_SELECT, 0x0000); | |
5841 | if (ret_val) | |
5842 | return ret_val; | |
5843 | ||
5844 | /* This loop will early-out if the link condition has been met. */ | |
5845 | for (i = PHY_FORCE_TIME; i > 0; i--) { | |
5846 | /* Read the MII Status Register and wait for Link Status bit | |
5847 | * to be set. | |
5848 | */ | |
5849 | ||
5850 | ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg); | |
5851 | if (ret_val) | |
5852 | return ret_val; | |
5853 | ||
5854 | ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg); | |
5855 | if (ret_val) | |
5856 | return ret_val; | |
5857 | ||
5858 | if (mii_status_reg & MII_SR_LINK_STATUS) | |
5859 | break; | |
4e0d8f7d | 5860 | msleep(100); |
120a5d0d JB |
5861 | } |
5862 | return E1000_SUCCESS; | |
1da177e4 LT |
5863 | } |
5864 | ||
120a5d0d JB |
5865 | /** |
5866 | * e1000_get_auto_rd_done | |
5867 | * @hw: Struct containing variables accessed by shared code | |
2d7edb92 | 5868 | * |
1532ecea | 5869 | * Check for EEPROM Auto Read bit done. |
1532ecea JB |
5870 | * returns: - E1000_ERR_RESET if fail to reset MAC |
5871 | * E1000_SUCCESS at any other case. | |
120a5d0d | 5872 | */ |
1532ecea | 5873 | static s32 e1000_get_auto_rd_done(struct e1000_hw *hw) |
2d7edb92 | 5874 | { |
675ad473 | 5875 | e_dbg("e1000_get_auto_rd_done"); |
120a5d0d JB |
5876 | msleep(5); |
5877 | return E1000_SUCCESS; | |
1532ecea | 5878 | } |
2d7edb92 | 5879 | |
120a5d0d JB |
5880 | /** |
5881 | * e1000_get_phy_cfg_done | |
5882 | * @hw: Struct containing variables accessed by shared code | |
1532ecea | 5883 | * |
120a5d0d | 5884 | * Checks if the PHY configuration is done |
1532ecea JB |
5885 | * returns: - E1000_ERR_RESET if fail to reset MAC |
5886 | * E1000_SUCCESS at any other case. | |
120a5d0d | 5887 | */ |
1532ecea JB |
5888 | static s32 e1000_get_phy_cfg_done(struct e1000_hw *hw) |
5889 | { | |
675ad473 | 5890 | e_dbg("e1000_get_phy_cfg_done"); |
4e0d8f7d | 5891 | msleep(10); |
120a5d0d | 5892 | return E1000_SUCCESS; |
2d7edb92 | 5893 | } |