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[FreeBSD/releng/8.1.git] / sys / dev / ath / ath_hal / ah_eeprom_v4k.c
1 /*
2  * Copyright (c) 2009 Rui Paulo <rpaulo@FreeBSD.org>
3  * Copyright (c) 2008 Sam Leffler, Errno Consulting
4  * Copyright (c) 2008 Atheros Communications, Inc.
5  *
6  * Permission to use, copy, modify, and/or distribute this software for any
7  * purpose with or without fee is hereby granted, provided that the above
8  * copyright notice and this permission notice appear in all copies.
9  *
10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17  *
18  * $FreeBSD$
19  */
20 #include "opt_ah.h"
21
22 #include "ah.h"
23 #include "ah_internal.h"
24 #include "ah_eeprom_v14.h"
25 #include "ah_eeprom_v4k.h"
26
27 static HAL_STATUS
28 v4kEepromGet(struct ath_hal *ah, int param, void *val)
29 {
30 #define CHAN_A_IDX      0
31 #define CHAN_B_IDX      1
32 #define IS_VERS(op, v)  ((pBase->version & AR5416_EEP_VER_MINOR_MASK) op (v))
33         HAL_EEPROM_v4k *ee = AH_PRIVATE(ah)->ah_eeprom;
34         const MODAL_EEP4K_HEADER *pModal = &ee->ee_base.modalHeader;
35         const BASE_EEP4K_HEADER  *pBase  = &ee->ee_base.baseEepHeader;
36         uint32_t sum;
37         uint8_t *macaddr;
38         int i;
39
40         switch (param) {
41         case AR_EEP_NFTHRESH_2:
42                 *(int16_t *)val = pModal->noiseFloorThreshCh[0];
43                 return HAL_OK;
44         case AR_EEP_MACADDR:            /* Get MAC Address */
45                 sum = 0;
46                 macaddr = val;
47                 for (i = 0; i < 6; i++) {
48                         macaddr[i] = pBase->macAddr[i];
49                         sum += pBase->macAddr[i];
50                 }
51                 if (sum == 0 || sum == 0xffff*3) {
52                         HALDEBUG(ah, HAL_DEBUG_ANY, "%s: bad mac address %s\n",
53                             __func__, ath_hal_ether_sprintf(macaddr));
54                         return HAL_EEBADMAC;
55                 }
56                 return HAL_OK;
57         case AR_EEP_REGDMN_0:
58                 return pBase->regDmn[0];
59         case AR_EEP_REGDMN_1:
60                 return pBase->regDmn[1];
61         case AR_EEP_OPCAP:
62                 return pBase->deviceCap;
63         case AR_EEP_OPMODE:
64                 return pBase->opCapFlags;
65         case AR_EEP_RFSILENT:
66                 return pBase->rfSilent;
67         case AR_EEP_OB_2:
68                 return pModal->ob;
69         case AR_EEP_DB_2:
70                 return pModal->db;
71         case AR_EEP_TXMASK:
72                 return pBase->txMask;
73         case AR_EEP_RXMASK:
74                 return pBase->rxMask;
75         case AR_EEP_RXGAIN_TYPE:
76                 return AR5416_EEP_RXGAIN_ORIG;
77         case AR_EEP_TXGAIN_TYPE:
78                 return IS_VERS(>=, AR5416_EEP_MINOR_VER_19) ?
79                     pBase->txGainType : AR5416_EEP_TXGAIN_ORIG;
80         case AR_EEP_OL_PWRCTRL:
81                 HALASSERT(val == AH_NULL);
82                 return HAL_EIO;
83         case AR_EEP_AMODE:
84                 HALASSERT(val == AH_NULL);
85                 return pBase->opCapFlags & AR5416_OPFLAGS_11A ?
86                     HAL_OK : HAL_EIO;
87         case AR_EEP_BMODE:
88         case AR_EEP_GMODE:
89                 HALASSERT(val == AH_NULL);
90                 return pBase->opCapFlags & AR5416_OPFLAGS_11G ?
91                     HAL_OK : HAL_EIO;
92         case AR_EEP_32KHZCRYSTAL:
93         case AR_EEP_COMPRESS:
94         case AR_EEP_FASTFRAME:          /* XXX policy decision, h/w can do it */
95         case AR_EEP_WRITEPROTECT:       /* NB: no write protect bit */
96                 HALASSERT(val == AH_NULL);
97                 /* fall thru... */
98         case AR_EEP_MAXQCU:             /* NB: not in opCapFlags */
99         case AR_EEP_KCENTRIES:          /* NB: not in opCapFlags */
100                 return HAL_EIO;
101         case AR_EEP_AES:
102         case AR_EEP_BURST:
103         case AR_EEP_RFKILL:
104         case AR_EEP_TURBO2DISABLE:
105                 HALASSERT(val == AH_NULL);
106                 return HAL_OK;
107         case AR_EEP_ANTGAINMAX_2:
108                 *(int8_t *) val = ee->ee_antennaGainMax;
109                 return HAL_OK;
110         default:
111                 HALASSERT(0);
112                 return HAL_EINVAL;
113         }
114 #undef IS_VERS
115 #undef CHAN_A_IDX
116 #undef CHAN_B_IDX
117 }
118
119 static HAL_BOOL
120 v4kEepromSet(struct ath_hal *ah, int param, int v)
121 {
122         HAL_EEPROM_v4k *ee = AH_PRIVATE(ah)->ah_eeprom;
123
124         switch (param) {
125         case AR_EEP_ANTGAINMAX_2:
126                 ee->ee_antennaGainMax = (int8_t) v;
127                 return HAL_OK;
128         }
129         return HAL_EINVAL;
130 }
131
132 static HAL_BOOL
133 v4kEepromDiag(struct ath_hal *ah, int request,
134      const void *args, uint32_t argsize, void **result, uint32_t *resultsize)
135 {
136         HAL_EEPROM_v4k *ee = AH_PRIVATE(ah)->ah_eeprom;
137
138         switch (request) {
139         case HAL_DIAG_EEPROM:
140                 *result = &ee->ee_base;
141                 *resultsize = sizeof(ee->ee_base);
142                 return AH_TRUE;
143         }
144         return AH_FALSE;
145 }
146
147 /* Do structure specific swaps if Eeprom format is non native to host */
148 static void
149 eepromSwap(struct ar5416eeprom_4k *ee)
150 {
151         uint32_t integer, i;
152         uint16_t word;
153         MODAL_EEP4K_HEADER *pModal;
154
155         /* convert Base Eep header */
156         word = __bswap16(ee->baseEepHeader.length);
157         ee->baseEepHeader.length = word;
158
159         word = __bswap16(ee->baseEepHeader.checksum);
160         ee->baseEepHeader.checksum = word;
161
162         word = __bswap16(ee->baseEepHeader.version);
163         ee->baseEepHeader.version = word;
164
165         word = __bswap16(ee->baseEepHeader.regDmn[0]);
166         ee->baseEepHeader.regDmn[0] = word;
167
168         word = __bswap16(ee->baseEepHeader.regDmn[1]);
169         ee->baseEepHeader.regDmn[1] = word;
170
171         word = __bswap16(ee->baseEepHeader.rfSilent);
172         ee->baseEepHeader.rfSilent = word;
173
174         word = __bswap16(ee->baseEepHeader.blueToothOptions);
175         ee->baseEepHeader.blueToothOptions = word; 
176
177         word = __bswap16(ee->baseEepHeader.deviceCap);
178         ee->baseEepHeader.deviceCap = word;
179
180         /* convert Modal Eep header */
181         pModal = &ee->modalHeader;
182
183         /* XXX linux/ah_osdep.h only defines __bswap32 for BE */
184         integer = __bswap32(pModal->antCtrlCommon);
185         pModal->antCtrlCommon = integer;
186
187         for (i = 0; i < AR5416_4K_MAX_CHAINS; i++) {
188                 integer = __bswap32(pModal->antCtrlChain[i]);
189                 pModal->antCtrlChain[i] = integer;
190         }
191
192         for (i = 0; i < AR5416_EEPROM_MODAL_SPURS; i++) {
193                 word = __bswap16(pModal->spurChans[i].spurChan);
194                 pModal->spurChans[i].spurChan = word;
195         }
196 }
197
198 static uint16_t 
199 v4kEepromGetSpurChan(struct ath_hal *ah, int ix, HAL_BOOL is2GHz)
200
201         HAL_EEPROM_v4k *ee = AH_PRIVATE(ah)->ah_eeprom;
202         
203         HALASSERT(0 <= ix && ix <  AR5416_EEPROM_MODAL_SPURS);
204         HALASSERT(is2GHz);
205         return ee->ee_base.modalHeader.spurChans[ix].spurChan;
206 }
207
208 /**************************************************************************
209  * fbin2freq
210  *
211  * Get channel value from binary representation held in eeprom
212  * RETURNS: the frequency in MHz
213  */
214 static uint16_t
215 fbin2freq(uint8_t fbin, HAL_BOOL is2GHz)
216 {
217         /*
218          * Reserved value 0xFF provides an empty definition both as
219          * an fbin and as a frequency - do not convert
220          */
221         if (fbin == AR5416_BCHAN_UNUSED)
222                 return fbin;
223         return (uint16_t)((is2GHz) ? (2300 + fbin) : (4800 + 5 * fbin));
224 }
225
226 /*
227  * Copy EEPROM Conformance Testing Limits contents 
228  * into the allocated space
229  */
230 /* USE CTLS from chain zero */ 
231 #define CTL_CHAIN       0 
232
233 static void
234 v4kEepromReadCTLInfo(struct ath_hal *ah, HAL_EEPROM_v4k *ee)
235 {
236         RD_EDGES_POWER *rep = ee->ee_rdEdgesPower;
237         int i, j;
238         
239         HALASSERT(AR5416_4K_NUM_CTLS <= sizeof(ee->ee_rdEdgesPower)/NUM_EDGES);
240
241         for (i = 0; ee->ee_base.ctlIndex[i] != 0 && i < AR5416_4K_NUM_CTLS; i++) {
242                 for (j = 0; j < NUM_EDGES; j ++) {
243                         /* XXX Confirm this is the right thing to do when an invalid channel is stored */
244                         if (ee->ee_base.ctlData[i].ctlEdges[CTL_CHAIN][j].bChannel == AR5416_BCHAN_UNUSED) {
245                                 rep[j].rdEdge = 0;
246                                 rep[j].twice_rdEdgePower = 0;
247                                 rep[j].flag = 0;
248                         } else {
249                                 rep[j].rdEdge = fbin2freq(
250                                     ee->ee_base.ctlData[i].ctlEdges[CTL_CHAIN][j].bChannel,
251                                     (ee->ee_base.ctlIndex[i] & CTL_MODE_M) != CTL_11A);
252                                 rep[j].twice_rdEdgePower = MS(ee->ee_base.ctlData[i].ctlEdges[CTL_CHAIN][j].tPowerFlag, CAL_CTL_EDGES_POWER);
253                                 rep[j].flag = MS(ee->ee_base.ctlData[i].ctlEdges[CTL_CHAIN][j].tPowerFlag, CAL_CTL_EDGES_FLAG) != 0;
254                         }
255                 }
256                 rep += NUM_EDGES;
257         }
258         ee->ee_numCtls = i;
259         HALDEBUG(ah, HAL_DEBUG_ATTACH | HAL_DEBUG_EEPROM,
260             "%s Numctls = %u\n",__func__,i);
261 }
262
263 /*
264  * Reclaim any EEPROM-related storage.
265  */
266 static void
267 v4kEepromDetach(struct ath_hal *ah)
268 {
269         HAL_EEPROM_v4k *ee = AH_PRIVATE(ah)->ah_eeprom;
270
271         ath_hal_free(ee);
272         AH_PRIVATE(ah)->ah_eeprom = AH_NULL;
273 }
274
275 #define owl_get_eep_ver(_ee)   \
276     (((_ee)->ee_base.baseEepHeader.version >> 12) & 0xF)
277 #define owl_get_eep_rev(_ee)   \
278     (((_ee)->ee_base.baseEepHeader.version) & 0xFFF)
279
280 HAL_STATUS
281 ath_hal_v4kEepromAttach(struct ath_hal *ah)
282 {
283 #define NW(a)   (sizeof(a) / sizeof(uint16_t))
284         HAL_EEPROM_v4k *ee = AH_PRIVATE(ah)->ah_eeprom;
285         uint16_t *eep_data, magic;
286         HAL_BOOL need_swap;
287         u_int w, off, len;
288         uint32_t sum;
289
290         HALASSERT(ee == AH_NULL);
291  
292         if (!ath_hal_eepromRead(ah, AR5416_EEPROM_MAGIC_OFFSET, &magic)) {
293                 HALDEBUG(ah, HAL_DEBUG_ANY,
294                     "%s Error reading Eeprom MAGIC\n", __func__);
295                 return HAL_EEREAD;
296         }
297         HALDEBUG(ah, HAL_DEBUG_ATTACH, "%s Eeprom Magic = 0x%x\n",
298             __func__, magic);
299         if (magic != AR5416_EEPROM_MAGIC) {
300                 HALDEBUG(ah, HAL_DEBUG_ANY, "Bad magic number\n");
301                 return HAL_EEMAGIC;
302         }
303
304         ee = ath_hal_malloc(sizeof(HAL_EEPROM_v4k));
305         if (ee == AH_NULL) {
306                 /* XXX message */
307                 return HAL_ENOMEM;
308         }
309
310         eep_data = (uint16_t *)&ee->ee_base;
311         for (w = 0; w < NW(struct ar5416eeprom_4k); w++) {
312                 off = owl_eep_start_loc + w;    /* NB: AP71 starts at 0 */
313                 if (!ath_hal_eepromRead(ah, off, &eep_data[w])) {
314                         HALDEBUG(ah, HAL_DEBUG_ANY,
315                             "%s eeprom read error at offset 0x%x\n",
316                             __func__, off);
317                         return HAL_EEREAD;
318                 }
319         }
320         /* Convert to eeprom native eeprom endian format */
321         if (isBigEndian()) {
322                 for (w = 0; w < NW(struct ar5416eeprom_4k); w++)
323                         eep_data[w] = __bswap16(eep_data[w]);
324         }
325
326         /*
327          * At this point, we're in the native eeprom endian format
328          * Now, determine the eeprom endian by looking at byte 26??
329          */
330         need_swap = ((ee->ee_base.baseEepHeader.eepMisc & AR5416_EEPMISC_BIG_ENDIAN) != 0) ^ isBigEndian();
331         if (need_swap) {
332                 HALDEBUG(ah, HAL_DEBUG_ATTACH | HAL_DEBUG_EEPROM,
333                     "Byte swap EEPROM contents.\n");
334                 len = __bswap16(ee->ee_base.baseEepHeader.length);
335         } else {
336                 len = ee->ee_base.baseEepHeader.length;
337         }
338         len = AH_MIN(len, sizeof(struct ar5416eeprom_4k)) / sizeof(uint16_t);
339         
340         /* Apply the checksum, done in native eeprom format */
341         /* XXX - Need to check to make sure checksum calculation is done
342          * in the correct endian format.  Right now, it seems it would
343          * cast the raw data to host format and do the calculation, which may
344          * not be correct as the calculation may need to be done in the native
345          * eeprom format 
346          */
347         sum = 0;
348         for (w = 0; w < len; w++) {
349                 sum ^= eep_data[w];
350         }
351         /* Check CRC - Attach should fail on a bad checksum */
352         if (sum != 0xffff) {
353                 HALDEBUG(ah, HAL_DEBUG_ANY,
354                     "Bad EEPROM checksum 0x%x (Len=%u)\n", sum, len);
355                 return HAL_EEBADSUM;
356         }
357
358         if (need_swap)
359                 eepromSwap(&ee->ee_base);       /* byte swap multi-byte data */
360
361         /* swap words 0+2 so version is at the front */
362         magic = eep_data[0];
363         eep_data[0] = eep_data[2];
364         eep_data[2] = magic;
365
366         HALDEBUG(ah, HAL_DEBUG_ATTACH | HAL_DEBUG_EEPROM,
367             "%s Eeprom Version %u.%u\n", __func__,
368             owl_get_eep_ver(ee), owl_get_eep_rev(ee));
369
370         /* NB: must be after all byte swapping */
371         if (owl_get_eep_ver(ee) != AR5416_EEP_VER) {
372                 HALDEBUG(ah, HAL_DEBUG_ANY,
373                     "Bad EEPROM version 0x%x\n", owl_get_eep_ver(ee));
374                 return HAL_EEBADSUM;
375         }
376
377         v4kEepromReadCTLInfo(ah, ee);           /* Get CTLs */
378
379         AH_PRIVATE(ah)->ah_eeprom = ee;
380         AH_PRIVATE(ah)->ah_eeversion = ee->ee_base.baseEepHeader.version;
381         AH_PRIVATE(ah)->ah_eepromDetach = v4kEepromDetach;
382         AH_PRIVATE(ah)->ah_eepromGet = v4kEepromGet;
383         AH_PRIVATE(ah)->ah_eepromSet = v4kEepromSet;
384         AH_PRIVATE(ah)->ah_getSpurChan = v4kEepromGetSpurChan;
385         AH_PRIVATE(ah)->ah_eepromDiag = v4kEepromDiag;
386         return HAL_OK;
387 #undef NW
388 }