1 /******************************************************************************/
3 /* Broadcom BCM5700 Linux Network Driver, Copyright (c) 2001 Broadcom */
5 /* All rights reserved. */
7 /* This program is free software; you can redistribute it and/or modify */
8 /* it under the terms of the GNU General Public License as published by */
9 /* the Free Software Foundation, located in the file LICENSE. */
12 /******************************************************************************/
13 #if !defined(CONFIG_NET_MULTI)
14 #if INCLUDE_TBI_SUPPORT
15 #include "bcm570x_autoneg.h"
16 #include "bcm570x_mm.h"
20 /******************************************************************************/
24 /******************************************************************************/
27 PAN_STATE_INFO pAnInfo)
29 PLM_DEVICE_BLOCK pDevice;
31 pDevice = (PLM_DEVICE_BLOCK) pAnInfo->pContext;
33 REG_WR(pDevice, MacCtrl.TxAutoNeg, (LM_UINT32) pAnInfo->TxConfig.AsUSHORT);
35 pDevice->MacMode |= MAC_MODE_SEND_CONFIGS;
36 REG_WR(pDevice, MacCtrl.Mode, pDevice->MacMode);
41 /******************************************************************************/
45 /******************************************************************************/
48 PAN_STATE_INFO pAnInfo)
50 PLM_DEVICE_BLOCK pDevice;
52 pDevice = (PLM_DEVICE_BLOCK) pAnInfo->pContext;
54 pDevice->MacMode &= ~MAC_MODE_SEND_CONFIGS;
55 REG_WR(pDevice, MacCtrl.Mode, pDevice->MacMode);
60 /******************************************************************************/
64 /******************************************************************************/
67 PAN_STATE_INFO pAnInfo,
68 unsigned short *pRxConfig)
70 PLM_DEVICE_BLOCK pDevice;
76 pDevice = (PLM_DEVICE_BLOCK) pAnInfo->pContext;
78 Value32 = REG_RD(pDevice, MacCtrl.Status);
79 if(Value32 & MAC_STATUS_RECEIVING_CFG)
81 Value32 = REG_RD(pDevice, MacCtrl.RxAutoNeg);
82 *pRxConfig = (unsigned short) Value32;
92 /******************************************************************************/
96 /******************************************************************************/
99 PAN_STATE_INFO pAnInfo)
103 for(j = 0; j < sizeof(AN_STATE_INFO); j++)
105 ((unsigned char *) pAnInfo)[j] = 0;
108 /* Initialize the default advertisement register. */
109 pAnInfo->mr_adv_full_duplex = 1;
110 pAnInfo->mr_adv_sym_pause = 1;
111 pAnInfo->mr_adv_asym_pause = 1;
112 pAnInfo->mr_an_enable = 1;
117 /******************************************************************************/
121 /******************************************************************************/
124 PAN_STATE_INFO pAnInfo)
126 unsigned short RxConfig;
127 unsigned long Delta_us;
128 AUTONEG_STATUS AnRet;
130 /* Get the current time. */
131 if(pAnInfo->State == AN_STATE_UNKNOWN)
133 pAnInfo->RxConfig.AsUSHORT = 0;
134 pAnInfo->CurrentTime_us = 0;
135 pAnInfo->LinkTime_us = 0;
136 pAnInfo->AbilityMatchCfg = 0;
137 pAnInfo->AbilityMatchCnt = 0;
138 pAnInfo->AbilityMatch = AN_FALSE;
139 pAnInfo->IdleMatch = AN_FALSE;
140 pAnInfo->AckMatch = AN_FALSE;
143 /* Increment the timer tick. This function is called every microsecon. */
144 /* pAnInfo->CurrentTime_us++; */
146 /* Set the AbilityMatch, IdleMatch, and AckMatch flags if their */
147 /* corresponding conditions are satisfied. */
148 if(MM_AnRxConfig(pAnInfo, &RxConfig))
150 if(RxConfig != pAnInfo->AbilityMatchCfg)
152 pAnInfo->AbilityMatchCfg = RxConfig;
153 pAnInfo->AbilityMatch = AN_FALSE;
154 pAnInfo->AbilityMatchCnt = 0;
158 pAnInfo->AbilityMatchCnt++;
159 if(pAnInfo->AbilityMatchCnt > 1)
161 pAnInfo->AbilityMatch = AN_TRUE;
162 pAnInfo->AbilityMatchCfg = RxConfig;
166 if(RxConfig & AN_CONFIG_ACK)
168 pAnInfo->AckMatch = AN_TRUE;
172 pAnInfo->AckMatch = AN_FALSE;
175 pAnInfo->IdleMatch = AN_FALSE;
179 pAnInfo->IdleMatch = AN_TRUE;
181 pAnInfo->AbilityMatchCfg = 0;
182 pAnInfo->AbilityMatchCnt = 0;
183 pAnInfo->AbilityMatch = AN_FALSE;
184 pAnInfo->AckMatch = AN_FALSE;
189 /* Save the last Config. */
190 pAnInfo->RxConfig.AsUSHORT = RxConfig;
192 /* Default return code. */
193 AnRet = AUTONEG_STATUS_OK;
195 /* Autoneg state machine as defined in 802.3z section 37.3.1.5. */
196 switch(pAnInfo->State)
198 case AN_STATE_UNKNOWN:
199 if(pAnInfo->mr_an_enable || pAnInfo->mr_restart_an)
201 pAnInfo->CurrentTime_us = 0;
202 pAnInfo->State = AN_STATE_AN_ENABLE;
207 case AN_STATE_AN_ENABLE:
208 pAnInfo->mr_an_complete = AN_FALSE;
209 pAnInfo->mr_page_rx = AN_FALSE;
211 if(pAnInfo->mr_an_enable)
213 pAnInfo->LinkTime_us = 0;
214 pAnInfo->AbilityMatchCfg = 0;
215 pAnInfo->AbilityMatchCnt = 0;
216 pAnInfo->AbilityMatch = AN_FALSE;
217 pAnInfo->IdleMatch = AN_FALSE;
218 pAnInfo->AckMatch = AN_FALSE;
220 pAnInfo->State = AN_STATE_AN_RESTART_INIT;
224 pAnInfo->State = AN_STATE_DISABLE_LINK_OK;
228 case AN_STATE_AN_RESTART_INIT:
229 pAnInfo->LinkTime_us = pAnInfo->CurrentTime_us;
230 pAnInfo->mr_np_loaded = AN_FALSE;
232 pAnInfo->TxConfig.AsUSHORT = 0;
233 MM_AnTxConfig(pAnInfo);
235 AnRet = AUTONEG_STATUS_TIMER_ENABLED;
237 pAnInfo->State = AN_STATE_AN_RESTART;
241 case AN_STATE_AN_RESTART:
242 /* Get the current time and compute the delta with the saved */
244 Delta_us = pAnInfo->CurrentTime_us - pAnInfo->LinkTime_us;
245 if(Delta_us > AN_LINK_TIMER_INTERVAL_US)
247 pAnInfo->State = AN_STATE_ABILITY_DETECT_INIT;
251 AnRet = AUTONEG_STATUS_TIMER_ENABLED;
255 case AN_STATE_DISABLE_LINK_OK:
256 AnRet = AUTONEG_STATUS_DONE;
259 case AN_STATE_ABILITY_DETECT_INIT:
260 /* Note: in the state diagram, this variable is set to */
261 /* mr_adv_ability<12>. Is this right?. */
262 pAnInfo->mr_toggle_tx = AN_FALSE;
264 /* Send the config as advertised in the advertisement register. */
265 pAnInfo->TxConfig.AsUSHORT = 0;
266 pAnInfo->TxConfig.D5_FD = pAnInfo->mr_adv_full_duplex;
267 pAnInfo->TxConfig.D6_HD = pAnInfo->mr_adv_half_duplex;
268 pAnInfo->TxConfig.D7_PS1 = pAnInfo->mr_adv_sym_pause;
269 pAnInfo->TxConfig.D8_PS2 = pAnInfo->mr_adv_asym_pause;
270 pAnInfo->TxConfig.D12_RF1 = pAnInfo->mr_adv_remote_fault1;
271 pAnInfo->TxConfig.D13_RF2 = pAnInfo->mr_adv_remote_fault2;
272 pAnInfo->TxConfig.D15_NP = pAnInfo->mr_adv_next_page;
274 MM_AnTxConfig(pAnInfo);
276 pAnInfo->State = AN_STATE_ABILITY_DETECT;
280 case AN_STATE_ABILITY_DETECT:
281 if(pAnInfo->AbilityMatch == AN_TRUE &&
282 pAnInfo->RxConfig.AsUSHORT != 0)
284 pAnInfo->State = AN_STATE_ACK_DETECT_INIT;
289 case AN_STATE_ACK_DETECT_INIT:
290 pAnInfo->TxConfig.D14_ACK = 1;
291 MM_AnTxConfig(pAnInfo);
293 pAnInfo->State = AN_STATE_ACK_DETECT;
297 case AN_STATE_ACK_DETECT:
298 if(pAnInfo->AckMatch == AN_TRUE)
300 if((pAnInfo->RxConfig.AsUSHORT & ~AN_CONFIG_ACK) ==
301 (pAnInfo->AbilityMatchCfg & ~AN_CONFIG_ACK))
303 pAnInfo->State = AN_STATE_COMPLETE_ACK_INIT;
307 pAnInfo->State = AN_STATE_AN_ENABLE;
310 else if(pAnInfo->AbilityMatch == AN_TRUE &&
311 pAnInfo->RxConfig.AsUSHORT == 0)
313 pAnInfo->State = AN_STATE_AN_ENABLE;
318 case AN_STATE_COMPLETE_ACK_INIT:
319 /* Make sure invalid bits are not set. */
320 if(pAnInfo->RxConfig.bits.D0 || pAnInfo->RxConfig.bits.D1 ||
321 pAnInfo->RxConfig.bits.D2 || pAnInfo->RxConfig.bits.D3 ||
322 pAnInfo->RxConfig.bits.D4 || pAnInfo->RxConfig.bits.D9 ||
323 pAnInfo->RxConfig.bits.D10 || pAnInfo->RxConfig.bits.D11)
325 AnRet = AUTONEG_STATUS_FAILED;
329 /* Set up the link partner advertisement register. */
330 pAnInfo->mr_lp_adv_full_duplex = pAnInfo->RxConfig.D5_FD;
331 pAnInfo->mr_lp_adv_half_duplex = pAnInfo->RxConfig.D6_HD;
332 pAnInfo->mr_lp_adv_sym_pause = pAnInfo->RxConfig.D7_PS1;
333 pAnInfo->mr_lp_adv_asym_pause = pAnInfo->RxConfig.D8_PS2;
334 pAnInfo->mr_lp_adv_remote_fault1 = pAnInfo->RxConfig.D12_RF1;
335 pAnInfo->mr_lp_adv_remote_fault2 = pAnInfo->RxConfig.D13_RF2;
336 pAnInfo->mr_lp_adv_next_page = pAnInfo->RxConfig.D15_NP;
338 pAnInfo->LinkTime_us = pAnInfo->CurrentTime_us;
340 pAnInfo->mr_toggle_tx = !pAnInfo->mr_toggle_tx;
341 pAnInfo->mr_toggle_rx = pAnInfo->RxConfig.bits.D11;
342 pAnInfo->mr_np_rx = pAnInfo->RxConfig.D15_NP;
343 pAnInfo->mr_page_rx = AN_TRUE;
345 pAnInfo->State = AN_STATE_COMPLETE_ACK;
346 AnRet = AUTONEG_STATUS_TIMER_ENABLED;
350 case AN_STATE_COMPLETE_ACK:
351 if(pAnInfo->AbilityMatch == AN_TRUE &&
352 pAnInfo->RxConfig.AsUSHORT == 0)
354 pAnInfo->State = AN_STATE_AN_ENABLE;
358 Delta_us = pAnInfo->CurrentTime_us - pAnInfo->LinkTime_us;
360 if(Delta_us > AN_LINK_TIMER_INTERVAL_US)
362 if(pAnInfo->mr_adv_next_page == 0 ||
363 pAnInfo->mr_lp_adv_next_page == 0)
365 pAnInfo->State = AN_STATE_IDLE_DETECT_INIT;
369 if(pAnInfo->TxConfig.bits.D15 == 0 &&
370 pAnInfo->mr_np_rx == 0)
372 pAnInfo->State = AN_STATE_IDLE_DETECT_INIT;
376 AnRet = AUTONEG_STATUS_FAILED;
383 case AN_STATE_IDLE_DETECT_INIT:
384 pAnInfo->LinkTime_us = pAnInfo->CurrentTime_us;
386 MM_AnTxIdle(pAnInfo);
388 pAnInfo->State = AN_STATE_IDLE_DETECT;
390 AnRet = AUTONEG_STATUS_TIMER_ENABLED;
394 case AN_STATE_IDLE_DETECT:
395 if(pAnInfo->AbilityMatch == AN_TRUE &&
396 pAnInfo->RxConfig.AsUSHORT == 0)
398 pAnInfo->State = AN_STATE_AN_ENABLE;
402 Delta_us = pAnInfo->CurrentTime_us - pAnInfo->LinkTime_us;
403 if(Delta_us > AN_LINK_TIMER_INTERVAL_US)
406 /* if(pAnInfo->IdleMatch == AN_TRUE) */
409 pAnInfo->State = AN_STATE_LINK_OK;
414 /* AnRet = AUTONEG_STATUS_FAILED; */
422 case AN_STATE_LINK_OK:
423 pAnInfo->mr_an_complete = AN_TRUE;
424 pAnInfo->mr_link_ok = AN_TRUE;
425 AnRet = AUTONEG_STATUS_DONE;
429 case AN_STATE_NEXT_PAGE_WAIT_INIT:
432 case AN_STATE_NEXT_PAGE_WAIT:
436 AnRet = AUTONEG_STATUS_FAILED;
442 #endif /* INCLUDE_TBI_SUPPORT */
444 #endif /* !defined(CONFIG_NET_MULTI) */