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[FreeBSD/releng/9.2.git] / sys / dev / ath / ath_hal / ah_eeprom_9287.c
1 /*
2  * Copyright (c) 2008 Sam Leffler, Errno Consulting
3  * Copyright (c) 2010 Atheros Communications, Inc.
4  *
5  * Permission to use, copy, modify, and/or distribute this software for any
6  * purpose with or without fee is hereby granted, provided that the above
7  * copyright notice and this permission notice appear in all copies.
8  *
9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16  *
17  * $FreeBSD$
18  */
19 #include "opt_ah.h"
20
21 #include "ah.h"
22 #include "ah_internal.h"
23 #include "ah_eeprom_v14.h"
24 #include "ah_eeprom_9287.h"
25
26 static HAL_STATUS
27 v9287EepromGet(struct ath_hal *ah, int param, void *val)
28 {
29 #define CHAN_A_IDX      0
30 #define CHAN_B_IDX      1
31 #define IS_VERS(op, v)  ((pBase->version & AR5416_EEP_VER_MINOR_MASK) op (v))
32         HAL_EEPROM_9287 *ee = AH_PRIVATE(ah)->ah_eeprom;
33         const MODAL_EEP_9287_HEADER *pModal = &ee->ee_base.modalHeader;
34         const BASE_EEP_9287_HEADER *pBase = &ee->ee_base.baseEepHeader;
35         uint32_t sum;
36         uint8_t *macaddr;
37         int i;
38
39         switch (param) {
40         case AR_EEP_NFTHRESH_2:
41                 *(int16_t *)val = pModal->noiseFloorThreshCh[0];
42                 return HAL_OK;
43         case AR_EEP_MACADDR:            /* Get MAC Address */
44                 sum = 0;
45                 macaddr = val;
46                 for (i = 0; i < 6; i++) {
47                         macaddr[i] = pBase->macAddr[i];
48                         sum += pBase->macAddr[i];
49                 }
50                 if (sum == 0 || sum == 0xffff*3) {
51                         HALDEBUG(ah, HAL_DEBUG_ANY, "%s: bad mac address %s\n",
52                             __func__, ath_hal_ether_sprintf(macaddr));
53                         return HAL_EEBADMAC;
54                 }
55                 return HAL_OK;
56         case AR_EEP_REGDMN_0:
57                 return pBase->regDmn[0];
58         case AR_EEP_REGDMN_1:
59                 return pBase->regDmn[1];
60         case AR_EEP_OPCAP:
61                 return pBase->deviceCap;
62         case AR_EEP_OPMODE:
63                 return pBase->opCapFlags;
64         case AR_EEP_RFSILENT:
65                 return pBase->rfSilent;
66         case AR_EEP_TXMASK:
67                 return pBase->txMask;
68         case AR_EEP_RXMASK:
69                 return pBase->rxMask;
70         case AR_EEP_OL_PWRCTRL:
71                 HALASSERT(val == AH_NULL);
72                 return pBase->openLoopPwrCntl ?  HAL_OK : HAL_EIO;
73         case AR_EEP_AMODE:
74                 return HAL_EIO;         /* no 5GHz for Kiwi */
75         case AR_EEP_BMODE:
76         case AR_EEP_GMODE:
77                 HALASSERT(val == AH_NULL);
78                 return pBase->opCapFlags & AR5416_OPFLAGS_11G ?
79                     HAL_OK : HAL_EIO;
80         case AR_EEP_32KHZCRYSTAL:
81         case AR_EEP_COMPRESS:
82         case AR_EEP_FASTFRAME:          /* XXX policy decision, h/w can do it */
83         case AR_EEP_WRITEPROTECT:       /* NB: no write protect bit */
84                 HALASSERT(val == AH_NULL);
85                 /* fall thru... */
86         case AR_EEP_MAXQCU:             /* NB: not in opCapFlags */
87         case AR_EEP_KCENTRIES:          /* NB: not in opCapFlags */
88                 return HAL_EIO;
89         case AR_EEP_AES:
90         case AR_EEP_BURST:
91         case AR_EEP_RFKILL:
92         case AR_EEP_TURBO5DISABLE:
93         case AR_EEP_TURBO2DISABLE:
94                 HALASSERT(val == AH_NULL);
95                 return HAL_OK;
96         case AR_EEP_ANTGAINMAX_2:
97                 *(int8_t *) val = ee->ee_antennaGainMax[1];
98                 return HAL_OK;
99         case AR_EEP_PWR_TABLE_OFFSET:
100                 *(int8_t *) val = pBase->pwrTableOffset;
101                 return HAL_OK;
102         case AR_EEP_TEMPSENSE_SLOPE:
103                 if (IS_VERS(>=,  AR9287_EEP_MINOR_VER_2))
104                         *(int8_t *)val = pBase->tempSensSlope;
105                 else
106                         *(int8_t *)val = 0;
107                 return HAL_OK;
108         case AR_EEP_TEMPSENSE_SLOPE_PAL_ON:
109                 if (IS_VERS(>=,  AR9287_EEP_MINOR_VER_3))
110                         *(int8_t *)val = pBase->tempSensSlopePalOn;
111                 else
112                         *(int8_t *)val = 0;
113                 return HAL_OK;
114         default:
115                 HALASSERT(0);
116                 return HAL_EINVAL;
117         }
118 #undef IS_VERS
119 #undef CHAN_A_IDX
120 #undef CHAN_B_IDX
121 }
122
123 static HAL_STATUS
124 v9287EepromSet(struct ath_hal *ah, int param, int v)
125 {
126         HAL_EEPROM_9287 *ee = AH_PRIVATE(ah)->ah_eeprom;
127
128         switch (param) {
129                 case AR_EEP_ANTGAINMAX_2:
130                         ee->ee_antennaGainMax[1] = (int8_t) v;
131                         return HAL_OK;
132                 default:
133                         return HAL_EINVAL;
134         }
135 }
136
137 static HAL_BOOL
138 v9287EepromDiag(struct ath_hal *ah, int request,
139      const void *args, uint32_t argsize, void **result, uint32_t *resultsize)
140 {
141         HAL_EEPROM_9287 *ee = AH_PRIVATE(ah)->ah_eeprom;
142
143         switch (request) {
144         case HAL_DIAG_EEPROM:
145                 *result = ee;
146                 *resultsize = sizeof(HAL_EEPROM_9287);
147                 return AH_TRUE;
148         }
149         return AH_FALSE;
150 }
151
152 /* Do structure specific swaps if Eeprom format is non native to host */
153 static void
154 eepromSwap(HAL_EEPROM_9287 *ee)
155 {
156         uint32_t integer, i;
157         uint16_t word;
158         MODAL_EEP_9287_HEADER *pModal;
159
160         /* convert Base Eep header */
161         word = __bswap16(ee->ee_base.baseEepHeader.length);
162         ee->ee_base.baseEepHeader.length = word;
163
164         word = __bswap16(ee->ee_base.baseEepHeader.checksum);
165         ee->ee_base.baseEepHeader.checksum = word;
166
167         word = __bswap16(ee->ee_base.baseEepHeader.version);
168         ee->ee_base.baseEepHeader.version = word;
169
170         word = __bswap16(ee->ee_base.baseEepHeader.regDmn[0]);
171         ee->ee_base.baseEepHeader.regDmn[0] = word;
172
173         word = __bswap16(ee->ee_base.baseEepHeader.regDmn[1]);
174         ee->ee_base.baseEepHeader.regDmn[1] = word;
175
176         word = __bswap16(ee->ee_base.baseEepHeader.rfSilent);
177         ee->ee_base.baseEepHeader.rfSilent = word;
178
179         word = __bswap16(ee->ee_base.baseEepHeader.blueToothOptions);
180         ee->ee_base.baseEepHeader.blueToothOptions = word; 
181
182         word = __bswap16(ee->ee_base.baseEepHeader.deviceCap);
183         ee->ee_base.baseEepHeader.deviceCap = word;
184
185         /* convert Modal Eep header */
186
187         /* only 2.4ghz here; so only one modal header entry */
188         pModal = &ee->ee_base.modalHeader;
189
190         /* XXX linux/ah_osdep.h only defines __bswap32 for BE */
191         integer = __bswap32(pModal->antCtrlCommon);
192         pModal->antCtrlCommon = integer;
193
194         for (i = 0; i < AR9287_MAX_CHAINS; i++) {
195                 integer = __bswap32(pModal->antCtrlChain[i]);
196                 pModal->antCtrlChain[i] = integer;
197         }
198         for (i = 0; i < AR5416_EEPROM_MODAL_SPURS; i++) {
199                 word = __bswap16(pModal->spurChans[i].spurChan);
200                 pModal->spurChans[i].spurChan = word;
201         }
202 }
203
204 static uint16_t 
205 v9287EepromGetSpurChan(struct ath_hal *ah, int ix, HAL_BOOL is2GHz)
206
207         HAL_EEPROM_9287 *ee = AH_PRIVATE(ah)->ah_eeprom;
208         
209         HALASSERT(is2GHz == AH_TRUE);
210         if (is2GHz != AH_TRUE)
211                 return 0;       /* XXX ? */
212         
213         HALASSERT(0 <= ix && ix <  AR5416_EEPROM_MODAL_SPURS);
214         return ee->ee_base.modalHeader.spurChans[ix].spurChan;
215 }
216
217 /**************************************************************************
218  * fbin2freq
219  *
220  * Get channel value from binary representation held in eeprom
221  * RETURNS: the frequency in MHz
222  */
223 static uint16_t
224 fbin2freq(uint8_t fbin, HAL_BOOL is2GHz)
225 {
226         /*
227          * Reserved value 0xFF provides an empty definition both as
228          * an fbin and as a frequency - do not convert
229         */
230         if (fbin == AR5416_BCHAN_UNUSED)
231                 return fbin;
232         return (uint16_t)((is2GHz) ? (2300 + fbin) : (4800 + 5 * fbin));
233 }
234
235
236 /*
237  * Copy EEPROM Conformance Testing Limits contents 
238  * into the allocated space
239  */
240 /* USE CTLS from chain zero */ 
241 #define CTL_CHAIN       0 
242
243 static void
244 v9287EepromReadCTLInfo(struct ath_hal *ah, HAL_EEPROM_9287 *ee)
245 {
246         RD_EDGES_POWER *rep = ee->ee_rdEdgesPower;
247         int i, j;
248         
249         HALASSERT(AR9287_NUM_CTLS <= sizeof(ee->ee_rdEdgesPower)/NUM_EDGES);
250
251         for (i = 0; ee->ee_base.ctlIndex[i] != 0 && i < AR9287_NUM_CTLS; i++) {
252                 for (j = 0; j < NUM_EDGES; j ++) {
253                         /* XXX Confirm this is the right thing to do when an invalid channel is stored */
254                         if (ee->ee_base.ctlData[i].ctlEdges[CTL_CHAIN][j].bChannel == AR5416_BCHAN_UNUSED) {
255                                 rep[j].rdEdge = 0;
256                                 rep[j].twice_rdEdgePower = 0;
257                                 rep[j].flag = 0;
258                         } else {
259                                 rep[j].rdEdge = fbin2freq(
260                                     ee->ee_base.ctlData[i].ctlEdges[CTL_CHAIN][j].bChannel,
261                                     (ee->ee_base.ctlIndex[i] & CTL_MODE_M) != CTL_11A);
262                                 rep[j].twice_rdEdgePower = MS(ee->ee_base.ctlData[i].ctlEdges[CTL_CHAIN][j].tPowerFlag, CAL_CTL_EDGES_POWER);
263                                 rep[j].flag = MS(ee->ee_base.ctlData[i].ctlEdges[CTL_CHAIN][j].tPowerFlag, CAL_CTL_EDGES_FLAG) != 0;
264                         }
265                 }
266                 rep += NUM_EDGES;
267         }
268         ee->ee_numCtls = i;
269         HALDEBUG(ah, HAL_DEBUG_ATTACH | HAL_DEBUG_EEPROM,
270             "%s Numctls = %u\n",__func__,i);
271 }
272
273 /*
274  * Reclaim any EEPROM-related storage.
275  */
276 static void
277 v9287EepromDetach(struct ath_hal *ah)
278 {
279         HAL_EEPROM_9287 *ee = AH_PRIVATE(ah)->ah_eeprom;
280
281         ath_hal_free(ee);
282         AH_PRIVATE(ah)->ah_eeprom = AH_NULL;
283 }
284
285 #define owl_get_eep_ver(_ee)   \
286     (((_ee)->ee_base.baseEepHeader.version >> 12) & 0xF)
287 #define owl_get_eep_rev(_ee)   \
288     (((_ee)->ee_base.baseEepHeader.version) & 0xFFF)
289
290 HAL_STATUS
291 ath_hal_9287EepromAttach(struct ath_hal *ah)
292 {
293 #define NW(a)   (sizeof(a) / sizeof(uint16_t))
294         HAL_EEPROM_9287 *ee = AH_PRIVATE(ah)->ah_eeprom;
295         uint16_t *eep_data, magic;
296         HAL_BOOL need_swap;
297         u_int w, off, len;
298         uint32_t sum;
299
300         HALASSERT(ee == AH_NULL);
301
302         /*
303          * Don't check magic if we're supplied with an EEPROM block,
304          * typically this is from Howl but it may also be from later
305          * boards w/ an embedded WMAC.
306          */
307         if (ah->ah_eepromdata == NULL) {
308                 if (!ath_hal_eepromRead(ah, AR5416_EEPROM_MAGIC_OFFSET, &magic)) {
309                         HALDEBUG(ah, HAL_DEBUG_ANY,
310                             "%s Error reading Eeprom MAGIC\n", __func__);
311                         return HAL_EEREAD;
312                 }
313         }
314         HALDEBUG(ah, HAL_DEBUG_ATTACH, "%s Eeprom Magic = 0x%x\n",
315             __func__, magic);
316         if (magic != AR5416_EEPROM_MAGIC) {
317                 HALDEBUG(ah, HAL_DEBUG_ANY, "Bad magic number\n");
318                 return HAL_EEMAGIC;
319         }
320
321         ee = ath_hal_malloc(sizeof(HAL_EEPROM_9287));
322         if (ee == AH_NULL) {
323                 /* XXX message */
324                 return HAL_ENOMEM;
325         }
326
327         eep_data = (uint16_t *) ee;
328         for (w = 0; w < NW(struct ar9287_eeprom); w++) {
329                 off = AR9287_EEP_START_LOC + w;
330                 if (!ath_hal_eepromRead(ah, off, &eep_data[w])) {
331                         HALDEBUG(ah, HAL_DEBUG_ANY,
332                             "%s eeprom read error at offset 0x%x\n",
333                             __func__, off);
334                         return HAL_EEREAD;
335                 }
336         }
337         /* Convert to eeprom native eeprom endian format */
338         /*
339          * XXX this is likely incorrect but will do for now
340          * XXX to get embedded boards working.
341          */
342         if (ah->ah_eepromdata == NULL && isBigEndian()) {
343                 for (w = 0; w < NW(HAL_EEPROM_9287); w++)
344                         eep_data[w] = __bswap16(eep_data[w]);
345         }
346
347         /*
348          * At this point, we're in the native eeprom endian format
349          * Now, determine the eeprom endian by looking at byte 26??
350          */
351         need_swap = ((ee->ee_base.baseEepHeader.eepMisc & AR5416_EEPMISC_BIG_ENDIAN) != 0) ^ isBigEndian();
352         if (need_swap) {
353                 HALDEBUG(ah, HAL_DEBUG_ATTACH | HAL_DEBUG_EEPROM,
354                     "Byte swap EEPROM contents.\n");
355                 len = __bswap16(ee->ee_base.baseEepHeader.length);
356         } else {
357                 len = ee->ee_base.baseEepHeader.length;
358         }
359         len = AH_MIN(len, sizeof(HAL_EEPROM_9287)) / sizeof(uint16_t);
360         
361         /* Apply the checksum, done in native eeprom format */
362         /* XXX - Need to check to make sure checksum calculation is done
363          * in the correct endian format.  Right now, it seems it would
364          * cast the raw data to host format and do the calculation, which may
365          * not be correct as the calculation may need to be done in the native
366          * eeprom format 
367          */
368         sum = 0;
369         for (w = 0; w < len; w++)
370                 sum ^= eep_data[w];
371         /* Check CRC - Attach should fail on a bad checksum */
372         if (sum != 0xffff) {
373                 HALDEBUG(ah, HAL_DEBUG_ANY,
374                     "Bad EEPROM checksum 0x%x (Len=%u)\n", sum, len);
375                 return HAL_EEBADSUM;
376         }
377
378         if (need_swap)
379                 eepromSwap(ee); /* byte swap multi-byte data */
380
381         /* swap words 0+2 so version is at the front */
382         magic = eep_data[0];
383         eep_data[0] = eep_data[2];
384         eep_data[2] = magic;
385
386         HALDEBUG(ah, HAL_DEBUG_ATTACH | HAL_DEBUG_EEPROM,
387             "%s Eeprom Version %u.%u\n", __func__,
388             owl_get_eep_ver(ee), owl_get_eep_rev(ee));
389
390         /* NB: must be after all byte swapping */
391         if (owl_get_eep_ver(ee) != AR5416_EEP_VER) {
392                 HALDEBUG(ah, HAL_DEBUG_ANY,
393                     "Bad EEPROM version 0x%x\n", owl_get_eep_ver(ee));
394                 return HAL_EEBADSUM;
395         }
396
397         v9287EepromReadCTLInfo(ah, ee);         /* Get CTLs */
398
399         AH_PRIVATE(ah)->ah_eeprom = ee;
400         AH_PRIVATE(ah)->ah_eeversion = ee->ee_base.baseEepHeader.version;
401         AH_PRIVATE(ah)->ah_eepromDetach = v9287EepromDetach;
402         AH_PRIVATE(ah)->ah_eepromGet = v9287EepromGet;
403         AH_PRIVATE(ah)->ah_eepromSet = v9287EepromSet;
404         AH_PRIVATE(ah)->ah_getSpurChan = v9287EepromGetSpurChan;
405         AH_PRIVATE(ah)->ah_eepromDiag = v9287EepromDiag;
406         return HAL_OK;
407 #undef NW
408 }