target/linux/bcm53xx/files/drivers/misc/bcm47xx-sprom.c

   1 /*
   2  * BCM47xx/BCM53xx nvram variable access
   3  *
   4  * Copyright (C) 2005 Broadcom Corporation
   5  * Copyright (C) 2004 Florian Schirmer <jolt@tuxbox.org>
   6  * Copyright (C) 2006 Michael Buesch <m@bues.ch>
   7  * Copyright (C) 2010 Waldemar Brodkorb <wbx@openadk.org>
   8  * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
   9  * Copyright (C) 2010-2014 Hauke Mehrtens <hauke@hauke-m.de>
  10  *
  11  * This program is free software; you can redistribute  it and/or modify it
  12  * under  the terms of  the GNU General  Public License as published by the
  13  * Free Software Foundation;  either version 2 of the  License, or (at your
  14  * option) any later version.
  15  */
  16
  17 #include <linux/types.h>
  18 #include <linux/module.h>
  19 #include <linux/kernel.h>
  20 #include <linux/string.h>
  21 #include <linux/of_address.h>
  22 #include <linux/device.h>
  23 #include <linux/platform_device.h>
  24 #include <linux/of_platform.h>
  25 #include <linux/io.h>
  26 #include <linux/ssb/ssb.h>
  27 #include <linux/bcma/bcma.h>
  28 #include <linux/bcm47xx_nvram.h>
  29 #include <linux/if_ether.h>
  30 #include <linux/etherdevice.h>
  31
  32 struct bcm47xx_sprom_fill {
  33         const char *prefix;
  34         bool fallback;
  35 };
  36
  37 static void create_key(const char *prefix, const char *postfix,
  38                        const char *name, char *buf, int len)
  39 {
  40         if (prefix && postfix)
  41                 snprintf(buf, len, "%s%s%s", prefix, name, postfix);
  42         else if (prefix)
  43                 snprintf(buf, len, "%s%s", prefix, name);
  44         else if (postfix)
  45                 snprintf(buf, len, "%s%s", name, postfix);
  46         else
  47                 snprintf(buf, len, "%s", name);
  48 }
  49
  50 static int get_nvram_var(const struct bcm47xx_sprom_fill *fill,
  51                          const char *postfix, const char *name, char *buf,
  52                          int len)
  53 {
  54         char key[40];
  55         int err;
  56
  57         create_key(fill->prefix, postfix, name, key, sizeof(key));
  58
  59         err = bcm47xx_nvram_getenv(key, buf, len);
  60         if (fill->fallback && err == -ENOENT && fill->prefix) {
  61                 create_key(NULL, postfix, name, key, sizeof(key));
  62                 err = bcm47xx_nvram_getenv(key, buf, len);
  63         }
  64         return err;
  65 }
  66
  67 #define NVRAM_READ_VAL(type)                                            \
  68 static void nvram_read_ ## type (const struct bcm47xx_sprom_fill *fill, \
  69                                  const char *postfix, const char *name, \
  70                                  type *val, type allset)                \
  71 {                                                                       \
  72         char buf[100];                                                  \
  73         int err;                                                        \
  74         type var;                                                       \
  75                                                                         \
  76         err = get_nvram_var(fill, postfix, name, buf, sizeof(buf));     \
  77         if (err < 0)                                                    \
  78                 return;                                                 \
  79         err = kstrto ## type(strim(buf), 0, &var);                      \
  80         if (err) {                                                      \
  81                 pr_warn("can not parse nvram name %s%s%s with value %s got %i\n",       \
  82                         fill->prefix, name, postfix, buf, err);         \
  83                 return;                                                 \
  84         }                                                               \
  85         if (allset && var == allset)                                    \
  86                 return;                                                 \
  87         *val = var;                                                     \
  88 }
  89
  90 NVRAM_READ_VAL(u8)
  91 NVRAM_READ_VAL(s8)
  92 NVRAM_READ_VAL(u16)
  93 NVRAM_READ_VAL(u32)
  94
  95 #undef NVRAM_READ_VAL
  96
  97 static void nvram_read_u32_2(const struct bcm47xx_sprom_fill *fill,
  98                              const char *name, u16 *val_lo, u16 *val_hi)
  99 {
 100         char buf[100];
 101         int err;
 102         u32 val;
 103
 104         err = get_nvram_var(fill, NULL, name, buf, sizeof(buf));
 105         if (err < 0)
 106                 return;
 107         err = kstrtou32(strim(buf), 0, &val);
 108         if (err) {
 109                 pr_warn("can not parse nvram name %s%s with value %s got %i\n",
 110                         fill->prefix, name, buf, err);
 111                 return;
 112         }
 113         *val_lo = (val & 0x0000FFFFU);
 114         *val_hi = (val & 0xFFFF0000U) >> 16;
 115 }
 116
 117 static void nvram_read_leddc(const struct bcm47xx_sprom_fill *fill,
 118                              const char *name, u8 *leddc_on_time,
 119                              u8 *leddc_off_time)
 120 {
 121         char buf[100];
 122         int err;
 123         u32 val;
 124
 125         err = get_nvram_var(fill, NULL, name, buf, sizeof(buf));
 126         if (err < 0)
 127                 return;
 128         err = kstrtou32(strim(buf), 0, &val);
 129         if (err) {
 130                 pr_warn("can not parse nvram name %s%s with value %s got %i\n",
 131                         fill->prefix, name, buf, err);
 132                 return;
 133         }
 134
 135         if (val == 0xffff || val == 0xffffffff)
 136                 return;
 137
 138         *leddc_on_time = val & 0xff;
 139         *leddc_off_time = (val >> 16) & 0xff;
 140 }
 141
 142 static void bcm47xx_nvram_parse_macaddr(char *buf, u8 macaddr[6])
 143 {
 144         if (strchr(buf, ':'))
 145                 sscanf(buf, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx", &macaddr[0],
 146                         &macaddr[1], &macaddr[2], &macaddr[3], &macaddr[4],
 147                         &macaddr[5]);
 148         else if (strchr(buf, '-'))
 149                 sscanf(buf, "%hhx-%hhx-%hhx-%hhx-%hhx-%hhx", &macaddr[0],
 150                         &macaddr[1], &macaddr[2], &macaddr[3], &macaddr[4],
 151                         &macaddr[5]);
 152         else
 153                 pr_warn("Can not parse mac address: %s\n", buf);
 154 }
 155
 156 static void nvram_read_macaddr(const struct bcm47xx_sprom_fill *fill,
 157                                const char *name, u8 val[6])
 158 {
 159         char buf[100];
 160         int err;
 161
 162         err = get_nvram_var(fill, NULL, name, buf, sizeof(buf));
 163         if (err < 0)
 164                 return;
 165
 166         bcm47xx_nvram_parse_macaddr(buf, val);
 167 }
 168
 169 static void nvram_read_alpha2(const struct bcm47xx_sprom_fill *fill,
 170                               const char *name, char val[2])
 171 {
 172         char buf[10];
 173         int err;
 174
 175         err = get_nvram_var(fill, NULL, name, buf, sizeof(buf));
 176         if (err < 0)
 177                 return;
 178         if (buf[0] == '0')
 179                 return;
 180         if (strlen(buf) > 2) {
 181                 pr_warn("alpha2 is too long %s\n", buf);
 182                 return;
 183         }
 184         memcpy(val, buf, 2);
 185 }
 186
 187 static void bcm47xx_sprom_fill_r1234589(struct ssb_sprom *sprom,
 188                                         const struct bcm47xx_sprom_fill *fill)
 189 {
 190         nvram_read_u16(fill, NULL, "devid", &sprom->dev_id, 0);
 191         nvram_read_u8(fill, NULL, "ledbh0", &sprom->gpio0, 0xff);
 192         nvram_read_u8(fill, NULL, "ledbh1", &sprom->gpio1, 0xff);
 193         nvram_read_u8(fill, NULL, "ledbh2", &sprom->gpio2, 0xff);
 194         nvram_read_u8(fill, NULL, "ledbh3", &sprom->gpio3, 0xff);
 195         nvram_read_u8(fill, NULL, "aa2g", &sprom->ant_available_bg, 0);
 196         nvram_read_u8(fill, NULL, "aa5g", &sprom->ant_available_a, 0);
 197         nvram_read_s8(fill, NULL, "ag0", &sprom->antenna_gain.a0, 0);
 198         nvram_read_s8(fill, NULL, "ag1", &sprom->antenna_gain.a1, 0);
 199         nvram_read_alpha2(fill, "ccode", sprom->alpha2);
 200 }
 201
 202 static void bcm47xx_sprom_fill_r12389(struct ssb_sprom *sprom,
 203                                       const struct bcm47xx_sprom_fill *fill)
 204 {
 205         nvram_read_u16(fill, NULL, "pa0b0", &sprom->pa0b0, 0);
 206         nvram_read_u16(fill, NULL, "pa0b1", &sprom->pa0b1, 0);
 207         nvram_read_u16(fill, NULL, "pa0b2", &sprom->pa0b2, 0);
 208         nvram_read_u8(fill, NULL, "pa0itssit", &sprom->itssi_bg, 0);
 209         nvram_read_u8(fill, NULL, "pa0maxpwr", &sprom->maxpwr_bg, 0);
 210         nvram_read_u16(fill, NULL, "pa1b0", &sprom->pa1b0, 0);
 211         nvram_read_u16(fill, NULL, "pa1b1", &sprom->pa1b1, 0);
 212         nvram_read_u16(fill, NULL, "pa1b2", &sprom->pa1b2, 0);
 213         nvram_read_u8(fill, NULL, "pa1itssit", &sprom->itssi_a, 0);
 214         nvram_read_u8(fill, NULL, "pa1maxpwr", &sprom->maxpwr_a, 0);
 215 }
 216
 217 static void bcm47xx_sprom_fill_r1(struct ssb_sprom *sprom,
 218                                   const struct bcm47xx_sprom_fill *fill)
 219 {
 220         nvram_read_u16(fill, NULL, "boardflags", &sprom->boardflags_lo, 0);
 221         nvram_read_u8(fill, NULL, "cc", &sprom->country_code, 0);
 222 }
 223
 224 static void bcm47xx_sprom_fill_r2389(struct ssb_sprom *sprom,
 225                                      const struct bcm47xx_sprom_fill *fill)
 226 {
 227         nvram_read_u8(fill, NULL, "opo", &sprom->opo, 0);
 228         nvram_read_u16(fill, NULL, "pa1lob0", &sprom->pa1lob0, 0);
 229         nvram_read_u16(fill, NULL, "pa1lob1", &sprom->pa1lob1, 0);
 230         nvram_read_u16(fill, NULL, "pa1lob2", &sprom->pa1lob2, 0);
 231         nvram_read_u16(fill, NULL, "pa1hib0", &sprom->pa1hib0, 0);
 232         nvram_read_u16(fill, NULL, "pa1hib1", &sprom->pa1hib1, 0);
 233         nvram_read_u16(fill, NULL, "pa1hib2", &sprom->pa1hib2, 0);
 234         nvram_read_u8(fill, NULL, "pa1lomaxpwr", &sprom->maxpwr_al, 0);
 235         nvram_read_u8(fill, NULL, "pa1himaxpwr", &sprom->maxpwr_ah, 0);
 236 }
 237
 238 static void bcm47xx_sprom_fill_r389(struct ssb_sprom *sprom,
 239                                     const struct bcm47xx_sprom_fill *fill)
 240 {
 241         nvram_read_u8(fill, NULL, "bxa2g", &sprom->bxa2g, 0);
 242         nvram_read_u8(fill, NULL, "rssisav2g", &sprom->rssisav2g, 0);
 243         nvram_read_u8(fill, NULL, "rssismc2g", &sprom->rssismc2g, 0);
 244         nvram_read_u8(fill, NULL, "rssismf2g", &sprom->rssismf2g, 0);
 245         nvram_read_u8(fill, NULL, "bxa5g", &sprom->bxa5g, 0);
 246         nvram_read_u8(fill, NULL, "rssisav5g", &sprom->rssisav5g, 0);
 247         nvram_read_u8(fill, NULL, "rssismc5g", &sprom->rssismc5g, 0);
 248         nvram_read_u8(fill, NULL, "rssismf5g", &sprom->rssismf5g, 0);
 249         nvram_read_u8(fill, NULL, "tri2g", &sprom->tri2g, 0);
 250         nvram_read_u8(fill, NULL, "tri5g", &sprom->tri5g, 0);
 251         nvram_read_u8(fill, NULL, "tri5gl", &sprom->tri5gl, 0);
 252         nvram_read_u8(fill, NULL, "tri5gh", &sprom->tri5gh, 0);
 253         nvram_read_s8(fill, NULL, "rxpo2g", &sprom->rxpo2g, 0);
 254         nvram_read_s8(fill, NULL, "rxpo5g", &sprom->rxpo5g, 0);
 255 }
 256
 257 static void bcm47xx_sprom_fill_r3(struct ssb_sprom *sprom,
 258                                   const struct bcm47xx_sprom_fill *fill)
 259 {
 260         nvram_read_u8(fill, NULL, "regrev", &sprom->regrev, 0);
 261         nvram_read_leddc(fill, "leddc", &sprom->leddc_on_time,
 262                          &sprom->leddc_off_time);
 263 }
 264
 265 static void bcm47xx_sprom_fill_r4589(struct ssb_sprom *sprom,
 266                                      const struct bcm47xx_sprom_fill *fill)
 267 {
 268         nvram_read_u8(fill, NULL, "regrev", &sprom->regrev, 0);
 269         nvram_read_s8(fill, NULL, "ag2", &sprom->antenna_gain.a2, 0);
 270         nvram_read_s8(fill, NULL, "ag3", &sprom->antenna_gain.a3, 0);
 271         nvram_read_u8(fill, NULL, "txchain", &sprom->txchain, 0xf);
 272         nvram_read_u8(fill, NULL, "rxchain", &sprom->rxchain, 0xf);
 273         nvram_read_u8(fill, NULL, "antswitch", &sprom->antswitch, 0xff);
 274         nvram_read_leddc(fill, "leddc", &sprom->leddc_on_time,
 275                          &sprom->leddc_off_time);
 276 }
 277
 278 static void bcm47xx_sprom_fill_r458(struct ssb_sprom *sprom,
 279                                     const struct bcm47xx_sprom_fill *fill)
 280 {
 281         nvram_read_u16(fill, NULL, "cck2gpo", &sprom->cck2gpo, 0);
 282         nvram_read_u32(fill, NULL, "ofdm2gpo", &sprom->ofdm2gpo, 0);
 283         nvram_read_u32(fill, NULL, "ofdm5gpo", &sprom->ofdm5gpo, 0);
 284         nvram_read_u32(fill, NULL, "ofdm5glpo", &sprom->ofdm5glpo, 0);
 285         nvram_read_u32(fill, NULL, "ofdm5ghpo", &sprom->ofdm5ghpo, 0);
 286         nvram_read_u16(fill, NULL, "cddpo", &sprom->cddpo, 0);
 287         nvram_read_u16(fill, NULL, "stbcpo", &sprom->stbcpo, 0);
 288         nvram_read_u16(fill, NULL, "bw40po", &sprom->bw40po, 0);
 289         nvram_read_u16(fill, NULL, "bwduppo", &sprom->bwduppo, 0);
 290         nvram_read_u16(fill, NULL, "mcs2gpo0", &sprom->mcs2gpo[0], 0);
 291         nvram_read_u16(fill, NULL, "mcs2gpo1", &sprom->mcs2gpo[1], 0);
 292         nvram_read_u16(fill, NULL, "mcs2gpo2", &sprom->mcs2gpo[2], 0);
 293         nvram_read_u16(fill, NULL, "mcs2gpo3", &sprom->mcs2gpo[3], 0);
 294         nvram_read_u16(fill, NULL, "mcs2gpo4", &sprom->mcs2gpo[4], 0);
 295         nvram_read_u16(fill, NULL, "mcs2gpo5", &sprom->mcs2gpo[5], 0);
 296         nvram_read_u16(fill, NULL, "mcs2gpo6", &sprom->mcs2gpo[6], 0);
 297         nvram_read_u16(fill, NULL, "mcs2gpo7", &sprom->mcs2gpo[7], 0);
 298         nvram_read_u16(fill, NULL, "mcs5gpo0", &sprom->mcs5gpo[0], 0);
 299         nvram_read_u16(fill, NULL, "mcs5gpo1", &sprom->mcs5gpo[1], 0);
 300         nvram_read_u16(fill, NULL, "mcs5gpo2", &sprom->mcs5gpo[2], 0);
 301         nvram_read_u16(fill, NULL, "mcs5gpo3", &sprom->mcs5gpo[3], 0);
 302         nvram_read_u16(fill, NULL, "mcs5gpo4", &sprom->mcs5gpo[4], 0);
 303         nvram_read_u16(fill, NULL, "mcs5gpo5", &sprom->mcs5gpo[5], 0);
 304         nvram_read_u16(fill, NULL, "mcs5gpo6", &sprom->mcs5gpo[6], 0);
 305         nvram_read_u16(fill, NULL, "mcs5gpo7", &sprom->mcs5gpo[7], 0);
 306         nvram_read_u16(fill, NULL, "mcs5glpo0", &sprom->mcs5glpo[0], 0);
 307         nvram_read_u16(fill, NULL, "mcs5glpo1", &sprom->mcs5glpo[1], 0);
 308         nvram_read_u16(fill, NULL, "mcs5glpo2", &sprom->mcs5glpo[2], 0);
 309         nvram_read_u16(fill, NULL, "mcs5glpo3", &sprom->mcs5glpo[3], 0);
 310         nvram_read_u16(fill, NULL, "mcs5glpo4", &sprom->mcs5glpo[4], 0);
 311         nvram_read_u16(fill, NULL, "mcs5glpo5", &sprom->mcs5glpo[5], 0);
 312         nvram_read_u16(fill, NULL, "mcs5glpo6", &sprom->mcs5glpo[6], 0);
 313         nvram_read_u16(fill, NULL, "mcs5glpo7", &sprom->mcs5glpo[7], 0);
 314         nvram_read_u16(fill, NULL, "mcs5ghpo0", &sprom->mcs5ghpo[0], 0);
 315         nvram_read_u16(fill, NULL, "mcs5ghpo1", &sprom->mcs5ghpo[1], 0);
 316         nvram_read_u16(fill, NULL, "mcs5ghpo2", &sprom->mcs5ghpo[2], 0);
 317         nvram_read_u16(fill, NULL, "mcs5ghpo3", &sprom->mcs5ghpo[3], 0);
 318         nvram_read_u16(fill, NULL, "mcs5ghpo4", &sprom->mcs5ghpo[4], 0);
 319         nvram_read_u16(fill, NULL, "mcs5ghpo5", &sprom->mcs5ghpo[5], 0);
 320         nvram_read_u16(fill, NULL, "mcs5ghpo6", &sprom->mcs5ghpo[6], 0);
 321         nvram_read_u16(fill, NULL, "mcs5ghpo7", &sprom->mcs5ghpo[7], 0);
 322 }
 323
 324 static void bcm47xx_sprom_fill_r45(struct ssb_sprom *sprom,
 325                                    const struct bcm47xx_sprom_fill *fill)
 326 {
 327         nvram_read_u8(fill, NULL, "txpid2ga0", &sprom->txpid2g[0], 0);
 328         nvram_read_u8(fill, NULL, "txpid2ga1", &sprom->txpid2g[1], 0);
 329         nvram_read_u8(fill, NULL, "txpid2ga2", &sprom->txpid2g[2], 0);
 330         nvram_read_u8(fill, NULL, "txpid2ga3", &sprom->txpid2g[3], 0);
 331         nvram_read_u8(fill, NULL, "txpid5ga0", &sprom->txpid5g[0], 0);
 332         nvram_read_u8(fill, NULL, "txpid5ga1", &sprom->txpid5g[1], 0);
 333         nvram_read_u8(fill, NULL, "txpid5ga2", &sprom->txpid5g[2], 0);
 334         nvram_read_u8(fill, NULL, "txpid5ga3", &sprom->txpid5g[3], 0);
 335         nvram_read_u8(fill, NULL, "txpid5gla0", &sprom->txpid5gl[0], 0);
 336         nvram_read_u8(fill, NULL, "txpid5gla1", &sprom->txpid5gl[1], 0);
 337         nvram_read_u8(fill, NULL, "txpid5gla2", &sprom->txpid5gl[2], 0);
 338         nvram_read_u8(fill, NULL, "txpid5gla3", &sprom->txpid5gl[3], 0);
 339         nvram_read_u8(fill, NULL, "txpid5gha0", &sprom->txpid5gh[0], 0);
 340         nvram_read_u8(fill, NULL, "txpid5gha1", &sprom->txpid5gh[1], 0);
 341         nvram_read_u8(fill, NULL, "txpid5gha2", &sprom->txpid5gh[2], 0);
 342         nvram_read_u8(fill, NULL, "txpid5gha3", &sprom->txpid5gh[3], 0);
 343 }
 344
 345 static void bcm47xx_sprom_fill_r89(struct ssb_sprom *sprom,
 346                                    const struct bcm47xx_sprom_fill *fill)
 347 {
 348         nvram_read_u8(fill, NULL, "tssipos2g", &sprom->fem.ghz2.tssipos, 0);
 349         nvram_read_u8(fill, NULL, "extpagain2g", &sprom->fem.ghz2.extpa_gain, 0);
 350         nvram_read_u8(fill, NULL, "pdetrange2g", &sprom->fem.ghz2.pdet_range, 0);
 351         nvram_read_u8(fill, NULL, "triso2g", &sprom->fem.ghz2.tr_iso, 0);
 352         nvram_read_u8(fill, NULL, "antswctl2g", &sprom->fem.ghz2.antswlut, 0);
 353         nvram_read_u8(fill, NULL, "tssipos5g", &sprom->fem.ghz5.tssipos, 0);
 354         nvram_read_u8(fill, NULL, "extpagain5g", &sprom->fem.ghz5.extpa_gain, 0);
 355         nvram_read_u8(fill, NULL, "pdetrange5g", &sprom->fem.ghz5.pdet_range, 0);
 356         nvram_read_u8(fill, NULL, "triso5g", &sprom->fem.ghz5.tr_iso, 0);
 357         nvram_read_u8(fill, NULL, "antswctl5g", &sprom->fem.ghz5.antswlut, 0);
 358         nvram_read_u8(fill, NULL, "tempthresh", &sprom->tempthresh, 0);
 359         nvram_read_u8(fill, NULL, "tempoffset", &sprom->tempoffset, 0);
 360         nvram_read_u16(fill, NULL, "rawtempsense", &sprom->rawtempsense, 0);
 361         nvram_read_u8(fill, NULL, "measpower", &sprom->measpower, 0);
 362         nvram_read_u8(fill, NULL, "tempsense_slope", &sprom->tempsense_slope, 0);
 363         nvram_read_u8(fill, NULL, "tempcorrx", &sprom->tempcorrx, 0);
 364         nvram_read_u8(fill, NULL, "tempsense_option", &sprom->tempsense_option, 0);
 365         nvram_read_u8(fill, NULL, "freqoffset_corr", &sprom->freqoffset_corr, 0);
 366         nvram_read_u8(fill, NULL, "iqcal_swp_dis", &sprom->iqcal_swp_dis, 0);
 367         nvram_read_u8(fill, NULL, "hw_iqcal_en", &sprom->hw_iqcal_en, 0);
 368         nvram_read_u8(fill, NULL, "elna2g", &sprom->elna2g, 0);
 369         nvram_read_u8(fill, NULL, "elna5g", &sprom->elna5g, 0);
 370         nvram_read_u8(fill, NULL, "phycal_tempdelta", &sprom->phycal_tempdelta, 0);
 371         nvram_read_u8(fill, NULL, "temps_period", &sprom->temps_period, 0);
 372         nvram_read_u8(fill, NULL, "temps_hysteresis", &sprom->temps_hysteresis, 0);
 373         nvram_read_u8(fill, NULL, "measpower1", &sprom->measpower1, 0);
 374         nvram_read_u8(fill, NULL, "measpower2", &sprom->measpower2, 0);
 375         nvram_read_u8(fill, NULL, "rxgainerr2ga0", &sprom->rxgainerr2ga[0], 0);
 376         nvram_read_u8(fill, NULL, "rxgainerr2ga1", &sprom->rxgainerr2ga[1], 0);
 377         nvram_read_u8(fill, NULL, "rxgainerr2ga2", &sprom->rxgainerr2ga[2], 0);
 378         nvram_read_u8(fill, NULL, "rxgainerr5gla0", &sprom->rxgainerr5gla[0], 0);
 379         nvram_read_u8(fill, NULL, "rxgainerr5gla1", &sprom->rxgainerr5gla[1], 0);
 380         nvram_read_u8(fill, NULL, "rxgainerr5gla2", &sprom->rxgainerr5gla[2], 0);
 381         nvram_read_u8(fill, NULL, "rxgainerr5gma0", &sprom->rxgainerr5gma[0], 0);
 382         nvram_read_u8(fill, NULL, "rxgainerr5gma1", &sprom->rxgainerr5gma[1], 0);
 383         nvram_read_u8(fill, NULL, "rxgainerr5gma2", &sprom->rxgainerr5gma[2], 0);
 384         nvram_read_u8(fill, NULL, "rxgainerr5gha0", &sprom->rxgainerr5gha[0], 0);
 385         nvram_read_u8(fill, NULL, "rxgainerr5gha1", &sprom->rxgainerr5gha[1], 0);
 386         nvram_read_u8(fill, NULL, "rxgainerr5gha2", &sprom->rxgainerr5gha[2], 0);
 387         nvram_read_u8(fill, NULL, "rxgainerr5gua0", &sprom->rxgainerr5gua[0], 0);
 388         nvram_read_u8(fill, NULL, "rxgainerr5gua1", &sprom->rxgainerr5gua[1], 0);
 389         nvram_read_u8(fill, NULL, "rxgainerr5gua2", &sprom->rxgainerr5gua[2], 0);
 390         nvram_read_u8(fill, NULL, "noiselvl2ga0", &sprom->noiselvl2ga[0], 0);
 391         nvram_read_u8(fill, NULL, "noiselvl2ga1", &sprom->noiselvl2ga[1], 0);
 392         nvram_read_u8(fill, NULL, "noiselvl2ga2", &sprom->noiselvl2ga[2], 0);
 393         nvram_read_u8(fill, NULL, "noiselvl5gla0", &sprom->noiselvl5gla[0], 0);
 394         nvram_read_u8(fill, NULL, "noiselvl5gla1", &sprom->noiselvl5gla[1], 0);
 395         nvram_read_u8(fill, NULL, "noiselvl5gla2", &sprom->noiselvl5gla[2], 0);
 396         nvram_read_u8(fill, NULL, "noiselvl5gma0", &sprom->noiselvl5gma[0], 0);
 397         nvram_read_u8(fill, NULL, "noiselvl5gma1", &sprom->noiselvl5gma[1], 0);
 398         nvram_read_u8(fill, NULL, "noiselvl5gma2", &sprom->noiselvl5gma[2], 0);
 399         nvram_read_u8(fill, NULL, "noiselvl5gha0", &sprom->noiselvl5gha[0], 0);
 400         nvram_read_u8(fill, NULL, "noiselvl5gha1", &sprom->noiselvl5gha[1], 0);
 401         nvram_read_u8(fill, NULL, "noiselvl5gha2", &sprom->noiselvl5gha[2], 0);
 402         nvram_read_u8(fill, NULL, "noiselvl5gua0", &sprom->noiselvl5gua[0], 0);
 403         nvram_read_u8(fill, NULL, "noiselvl5gua1", &sprom->noiselvl5gua[1], 0);
 404         nvram_read_u8(fill, NULL, "noiselvl5gua2", &sprom->noiselvl5gua[2], 0);
 405         nvram_read_u8(fill, NULL, "pcieingress_war", &sprom->pcieingress_war, 0);
 406 }
 407
 408 static void bcm47xx_sprom_fill_r9(struct ssb_sprom *sprom,
 409                                   const struct bcm47xx_sprom_fill *fill)
 410 {
 411         nvram_read_u16(fill, NULL, "cckbw202gpo", &sprom->cckbw202gpo, 0);
 412         nvram_read_u16(fill, NULL, "cckbw20ul2gpo", &sprom->cckbw20ul2gpo, 0);
 413         nvram_read_u32(fill, NULL, "legofdmbw202gpo", &sprom->legofdmbw202gpo, 0);
 414         nvram_read_u32(fill, NULL, "legofdmbw20ul2gpo", &sprom->legofdmbw20ul2gpo, 0);
 415         nvram_read_u32(fill, NULL, "legofdmbw205glpo", &sprom->legofdmbw205glpo, 0);
 416         nvram_read_u32(fill, NULL, "legofdmbw20ul5glpo", &sprom->legofdmbw20ul5glpo, 0);
 417         nvram_read_u32(fill, NULL, "legofdmbw205gmpo", &sprom->legofdmbw205gmpo, 0);
 418         nvram_read_u32(fill, NULL, "legofdmbw20ul5gmpo", &sprom->legofdmbw20ul5gmpo, 0);
 419         nvram_read_u32(fill, NULL, "legofdmbw205ghpo", &sprom->legofdmbw205ghpo, 0);
 420         nvram_read_u32(fill, NULL, "legofdmbw20ul5ghpo", &sprom->legofdmbw20ul5ghpo, 0);
 421         nvram_read_u32(fill, NULL, "mcsbw202gpo", &sprom->mcsbw202gpo, 0);
 422         nvram_read_u32(fill, NULL, "mcsbw20ul2gpo", &sprom->mcsbw20ul2gpo, 0);
 423         nvram_read_u32(fill, NULL, "mcsbw402gpo", &sprom->mcsbw402gpo, 0);
 424         nvram_read_u32(fill, NULL, "mcsbw205glpo", &sprom->mcsbw205glpo, 0);
 425         nvram_read_u32(fill, NULL, "mcsbw20ul5glpo", &sprom->mcsbw20ul5glpo, 0);
 426         nvram_read_u32(fill, NULL, "mcsbw405glpo", &sprom->mcsbw405glpo, 0);
 427         nvram_read_u32(fill, NULL, "mcsbw205gmpo", &sprom->mcsbw205gmpo, 0);
 428         nvram_read_u32(fill, NULL, "mcsbw20ul5gmpo", &sprom->mcsbw20ul5gmpo, 0);
 429         nvram_read_u32(fill, NULL, "mcsbw405gmpo", &sprom->mcsbw405gmpo, 0);
 430         nvram_read_u32(fill, NULL, "mcsbw205ghpo", &sprom->mcsbw205ghpo, 0);
 431         nvram_read_u32(fill, NULL, "mcsbw20ul5ghpo", &sprom->mcsbw20ul5ghpo, 0);
 432         nvram_read_u32(fill, NULL, "mcsbw405ghpo", &sprom->mcsbw405ghpo, 0);
 433         nvram_read_u16(fill, NULL, "mcs32po", &sprom->mcs32po, 0);
 434         nvram_read_u16(fill, NULL, "legofdm40duppo", &sprom->legofdm40duppo, 0);
 435         nvram_read_u8(fill, NULL, "sar2g", &sprom->sar2g, 0);
 436         nvram_read_u8(fill, NULL, "sar5g", &sprom->sar5g, 0);
 437 }
 438
 439 static void bcm47xx_sprom_fill_path_r4589(struct ssb_sprom *sprom,
 440                                           const struct bcm47xx_sprom_fill *fill)
 441 {
 442         char postfix[2];
 443         int i;
 444
 445         for (i = 0; i < ARRAY_SIZE(sprom->core_pwr_info); i++) {
 446                 struct ssb_sprom_core_pwr_info *pwr_info = &sprom->core_pwr_info[i];
 447
 448                 snprintf(postfix, sizeof(postfix), "%i", i);
 449                 nvram_read_u8(fill, postfix, "maxp2ga", &pwr_info->maxpwr_2g, 0);
 450                 nvram_read_u8(fill, postfix, "itt2ga", &pwr_info->itssi_2g, 0);
 451                 nvram_read_u8(fill, postfix, "itt5ga", &pwr_info->itssi_5g, 0);
 452                 nvram_read_u16(fill, postfix, "pa2gw0a", &pwr_info->pa_2g[0], 0);
 453                 nvram_read_u16(fill, postfix, "pa2gw1a", &pwr_info->pa_2g[1], 0);
 454                 nvram_read_u16(fill, postfix, "pa2gw2a", &pwr_info->pa_2g[2], 0);
 455                 nvram_read_u8(fill, postfix, "maxp5ga", &pwr_info->maxpwr_5g, 0);
 456                 nvram_read_u8(fill, postfix, "maxp5gha", &pwr_info->maxpwr_5gh, 0);
 457                 nvram_read_u8(fill, postfix, "maxp5gla", &pwr_info->maxpwr_5gl, 0);
 458                 nvram_read_u16(fill, postfix, "pa5gw0a", &pwr_info->pa_5g[0], 0);
 459                 nvram_read_u16(fill, postfix, "pa5gw1a", &pwr_info->pa_5g[1], 0);
 460                 nvram_read_u16(fill, postfix, "pa5gw2a", &pwr_info->pa_5g[2], 0);
 461                 nvram_read_u16(fill, postfix, "pa5glw0a", &pwr_info->pa_5gl[0], 0);
 462                 nvram_read_u16(fill, postfix, "pa5glw1a", &pwr_info->pa_5gl[1], 0);
 463                 nvram_read_u16(fill, postfix, "pa5glw2a", &pwr_info->pa_5gl[2], 0);
 464                 nvram_read_u16(fill, postfix, "pa5ghw0a", &pwr_info->pa_5gh[0], 0);
 465                 nvram_read_u16(fill, postfix, "pa5ghw1a", &pwr_info->pa_5gh[1], 0);
 466                 nvram_read_u16(fill, postfix, "pa5ghw2a", &pwr_info->pa_5gh[2], 0);
 467         }
 468 }
 469
 470 static void bcm47xx_sprom_fill_path_r45(struct ssb_sprom *sprom,
 471                                         const struct bcm47xx_sprom_fill *fill)
 472 {
 473         char postfix[2];
 474         int i;
 475
 476         for (i = 0; i < ARRAY_SIZE(sprom->core_pwr_info); i++) {
 477                 struct ssb_sprom_core_pwr_info *pwr_info = &sprom->core_pwr_info[i];
 478
 479                 snprintf(postfix, sizeof(postfix), "%i", i);
 480                 nvram_read_u16(fill, postfix, "pa2gw3a", &pwr_info->pa_2g[3], 0);
 481                 nvram_read_u16(fill, postfix, "pa5gw3a", &pwr_info->pa_5g[3], 0);
 482                 nvram_read_u16(fill, postfix, "pa5glw3a", &pwr_info->pa_5gl[3], 0);
 483                 nvram_read_u16(fill, postfix, "pa5ghw3a", &pwr_info->pa_5gh[3], 0);
 484         }
 485 }
 486
 487 static bool bcm47xx_is_valid_mac(u8 *mac)
 488 {
 489         return mac && !(mac[0] == 0x00 && mac[1] == 0x90 && mac[2] == 0x4c);
 490 }
 491
 492 static int bcm47xx_increase_mac_addr(u8 *mac, u8 num)
 493 {
 494         u8 *oui = mac + ETH_ALEN/2 - 1;
 495         u8 *p = mac + ETH_ALEN - 1;
 496
 497         do {
 498                 (*p) += num;
 499                 if (*p > num)
 500                         break;
 501                 p--;
 502                 num = 1;
 503         } while (p != oui);
 504
 505         if (p == oui) {
 506                 pr_err("unable to fetch mac address\n");
 507                 return -ENOENT;
 508         }
 509         return 0;
 510 }
 511
 512 /*
 513  * This is a global counter because different instances of sprom will
 514  * access the same nvram.
 515  */
 516 static int mac_addr_used = 2;
 517
 518 static void bcm47xx_sprom_fill_ethernet(struct ssb_sprom *sprom,
 519                                         const struct bcm47xx_sprom_fill *fill)
 520 {
 521         nvram_read_macaddr(fill, "et0macaddr", sprom->et0mac);
 522         nvram_read_u8(fill, NULL, "et0mdcport", &sprom->et0mdcport, 0);
 523         nvram_read_u8(fill, NULL, "et0phyaddr", &sprom->et0phyaddr, 0);
 524
 525         nvram_read_macaddr(fill, "et1macaddr", sprom->et1mac);
 526         nvram_read_u8(fill, NULL, "et1mdcport", &sprom->et1mdcport, 0);
 527         nvram_read_u8(fill, NULL, "et1phyaddr", &sprom->et1phyaddr, 0);
 528
 529         nvram_read_macaddr(fill, "macaddr", sprom->il0mac);
 530         nvram_read_macaddr(fill, "il0macaddr", sprom->il0mac);
 531
 532         /*
 533          * The address prefix 00:90:4C is used by Broadcom in their initial
 534          * configuration. When a mac address with the prefix 00:90:4C is used
 535          * all devices from the same series are sharing the same mac address.
 536          * To prevent mac address collisions we replace them with a mac address
 537          * based on the base address.
 538          */
 539         if (!bcm47xx_is_valid_mac(sprom->il0mac)) {
 540                 u8 mac[6];
 541                 struct bcm47xx_sprom_fill fill_no_prefix;
 542
 543                 memcpy(&fill_no_prefix, fill, sizeof(fill_no_prefix));
 544                 fill_no_prefix.prefix = NULL;
 545
 546                 nvram_read_macaddr(&fill_no_prefix, "et0macaddr", mac);
 547                 if (bcm47xx_is_valid_mac(mac)) {
 548                         int err = bcm47xx_increase_mac_addr(mac, mac_addr_used);
 549
 550                         if (!err) {
 551                                 ether_addr_copy(sprom->il0mac, mac);
 552                                 mac_addr_used++;
 553                         }
 554                 }
 555         }
 556 }
 557
 558 static void bcm47xx_sprom_fill_board_data(struct ssb_sprom *sprom,
 559                                           const struct bcm47xx_sprom_fill *fill)
 560 {
 561         nvram_read_u16(fill, NULL, "boardrev", &sprom->board_rev, 0);
 562         nvram_read_u16(fill, NULL, "boardnum", &sprom->board_num, 0);
 563         nvram_read_u16(fill, NULL, "boardtype", &sprom->board_type, 0);
 564         nvram_read_u32_2(fill, "boardflags", &sprom->boardflags_lo,
 565                          &sprom->boardflags_hi);
 566         nvram_read_u32_2(fill, "boardflags2", &sprom->boardflags2_lo,
 567                          &sprom->boardflags2_hi);
 568 }
 569
 570 static void bcm47xx_sprom_fill(struct ssb_sprom *sprom,
 571                                const struct bcm47xx_sprom_fill *fill)
 572 {
 573         bcm47xx_sprom_fill_ethernet(sprom, fill);
 574         bcm47xx_sprom_fill_board_data(sprom, fill);
 575
 576         nvram_read_u8(fill, NULL, "sromrev", &sprom->revision, 0);
 577
 578         switch (sprom->revision) {
 579         case 1:
 580                 bcm47xx_sprom_fill_r1234589(sprom, fill);
 581                 bcm47xx_sprom_fill_r12389(sprom, fill);
 582                 bcm47xx_sprom_fill_r1(sprom, fill);
 583                 break;
 584         case 2:
 585                 bcm47xx_sprom_fill_r1234589(sprom, fill);
 586                 bcm47xx_sprom_fill_r12389(sprom, fill);
 587                 bcm47xx_sprom_fill_r2389(sprom, fill);
 588                 break;
 589         case 3:
 590                 bcm47xx_sprom_fill_r1234589(sprom, fill);
 591                 bcm47xx_sprom_fill_r12389(sprom, fill);
 592                 bcm47xx_sprom_fill_r2389(sprom, fill);
 593                 bcm47xx_sprom_fill_r389(sprom, fill);
 594                 bcm47xx_sprom_fill_r3(sprom, fill);
 595                 break;
 596         case 4:
 597         case 5:
 598                 bcm47xx_sprom_fill_r1234589(sprom, fill);
 599                 bcm47xx_sprom_fill_r4589(sprom, fill);
 600                 bcm47xx_sprom_fill_r458(sprom, fill);
 601                 bcm47xx_sprom_fill_r45(sprom, fill);
 602                 bcm47xx_sprom_fill_path_r4589(sprom, fill);
 603                 bcm47xx_sprom_fill_path_r45(sprom, fill);
 604                 break;
 605         case 8:
 606                 bcm47xx_sprom_fill_r1234589(sprom, fill);
 607                 bcm47xx_sprom_fill_r12389(sprom, fill);
 608                 bcm47xx_sprom_fill_r2389(sprom, fill);
 609                 bcm47xx_sprom_fill_r389(sprom, fill);
 610                 bcm47xx_sprom_fill_r4589(sprom, fill);
 611                 bcm47xx_sprom_fill_r458(sprom, fill);
 612                 bcm47xx_sprom_fill_r89(sprom, fill);
 613                 bcm47xx_sprom_fill_path_r4589(sprom, fill);
 614                 break;
 615         case 9:
 616                 bcm47xx_sprom_fill_r1234589(sprom, fill);
 617                 bcm47xx_sprom_fill_r12389(sprom, fill);
 618                 bcm47xx_sprom_fill_r2389(sprom, fill);
 619                 bcm47xx_sprom_fill_r389(sprom, fill);
 620                 bcm47xx_sprom_fill_r4589(sprom, fill);
 621                 bcm47xx_sprom_fill_r89(sprom, fill);
 622                 bcm47xx_sprom_fill_r9(sprom, fill);
 623                 bcm47xx_sprom_fill_path_r4589(sprom, fill);
 624                 break;
 625         default:
 626                 pr_warn("Unsupported SPROM revision %d detected. Will extract v1\n",
 627                         sprom->revision);
 628                 sprom->revision = 1;
 629                 bcm47xx_sprom_fill_r1234589(sprom, fill);
 630                 bcm47xx_sprom_fill_r12389(sprom, fill);
 631                 bcm47xx_sprom_fill_r1(sprom, fill);
 632         }
 633 }
 634
 635 static char prefix[20];
 636
 637 static void bcm47xx_sprom_apply_prefix_alias(char *prefix, size_t prefix_size)
 638 {
 639         size_t prefix_len = strlen(prefix);
 640         size_t short_len = prefix_len - 1;
 641         char nvram_var[10];
 642         char buf[20];
 643         int i;
 644
 645         if (prefix_len <= 0 || prefix[prefix_len - 1] != '/') {
 646                 pr_warn("Invalid prefix: \"%s\"\n", prefix);
 647                 return;
 648         }
 649
 650         for (i = 0; i < 3; i++) {
 651                 if (snprintf(nvram_var, sizeof(nvram_var), "devpath%d", i) <= 0)
 652                         continue;
 653                 if (bcm47xx_nvram_getenv(nvram_var, buf, sizeof(buf)) < 0)
 654                         continue;
 655                 if (!strcmp(buf, prefix) ||
 656                     (short_len && strlen(buf) == short_len && !strncmp(buf, prefix, short_len))) {
 657                         snprintf(prefix, prefix_size, "%d:", i);
 658                         return;
 659                 }
 660         }
 661 }
 662
 663 /*
 664  * This function has to be called in a very precise moment. It has to be done:
 665  * 1) After bcma registers flash cores, so we can read NVRAM.
 666  * 2) Before any code needs SPROM content.
 667  *
 668  * This can be achieved only by using bcma callback.
 669  */
 670 static int bcm47xx_sprom_init(struct bcma_bus *bus, struct ssb_sprom *out)
 671 {
 672         struct bcm47xx_sprom_fill fill;
 673
 674         switch (bus->hosttype) {
 675         case BCMA_HOSTTYPE_PCI:
 676                 snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
 677                          pci_domain_nr(bus->host_pci->bus) + 1,
 678                          bus->host_pci->bus->number);
 679                 bcm47xx_sprom_apply_prefix_alias(prefix, sizeof(prefix));
 680                 fill.prefix = prefix;
 681                 break;
 682         case BCMA_HOSTTYPE_SOC:
 683                 fill.prefix = NULL;
 684                 break;
 685         default:
 686                 pr_err("Unable to fill SPROM for given hosttype.\n");
 687                 return -EINVAL;
 688         }
 689
 690         fill.fallback = false;
 691
 692         bcm47xx_sprom_fill(out, &fill);
 693
 694         return 0;
 695 };
 696
 697 static int bcm47xx_sprom_probe(struct platform_device *pdev)
 698 {
 699         return bcma_arch_register_fallback_sprom(&bcm47xx_sprom_init);
 700 }
 701
 702 static const struct of_device_id bcm47xx_sprom_of_match_table[] = {
 703         { .compatible = "brcm,bcm47xx-sprom", },
 704         {},
 705 };
 706 MODULE_DEVICE_TABLE(of, bcm47xx_sprom_of_match_table);
 707
 708 static struct platform_driver bcm47xx_sprom_driver = {
 709         .driver = {
 710                 .owner = THIS_MODULE,
 711                 .name = "bcm47xx-sprom",
 712                 .of_match_table = bcm47xx_sprom_of_match_table,
 713                 /* driver unloading/unbinding currently not supported */
 714                 .suppress_bind_attrs = true,
 715         },
 716         .probe = bcm47xx_sprom_probe,
 717 };
 718 module_platform_driver(bcm47xx_sprom_driver);
 719
 720 MODULE_AUTHOR("Hauke Mehrtens <hauke@hauke-m.de>");
 721 MODULE_LICENSE("GPL v2");