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         int (*getenv)(const struct bcm47xx_sprom_fill *fill, const char *name,
  36                       char *val, size_t val_len);
  37         const void *priv;
  38 };
  39
  40 static void create_key(const char *prefix, const char *postfix,
  41                        const char *name, char *buf, int len)
  42 {
  43         if (prefix && postfix)
  44                 snprintf(buf, len, "%s%s%s", prefix, name, postfix);
  45         else if (prefix)
  46                 snprintf(buf, len, "%s%s", prefix, name);
  47         else if (postfix)
  48                 snprintf(buf, len, "%s%s", name, postfix);
  49         else
  50                 snprintf(buf, len, "%s", name);
  51 }
  52
  53 static int get_nvram_var(const struct bcm47xx_sprom_fill *fill,
  54                          const char *postfix, const char *name, char *buf,
  55                          int len)
  56 {
  57         char key[40];
  58         int err;
  59
  60         create_key(fill->prefix, postfix, name, key, sizeof(key));
  61
  62         err = fill->getenv(fill, key, buf, len);
  63         if (fill->fallback && err == -ENOENT && fill->prefix) {
  64                 create_key(NULL, postfix, name, key, sizeof(key));
  65                 err = fill->getenv(fill, key, buf, len);
  66         }
  67         return err;
  68 }
  69
  70 #define NVRAM_READ_VAL(type)                                            \
  71 static void nvram_read_ ## type (const struct bcm47xx_sprom_fill *fill, \
  72                                  const char *postfix, const char *name, \
  73                                  type *val, type allset)                \
  74 {                                                                       \
  75         char buf[100];                                                  \
  76         int err;                                                        \
  77         type var;                                                       \
  78                                                                         \
  79         err = get_nvram_var(fill, postfix, name, buf, sizeof(buf));     \
  80         if (err < 0)                                                    \
  81                 return;                                                 \
  82         err = kstrto ## type(strim(buf), 0, &var);                      \
  83         if (err) {                                                      \
  84                 pr_warn("can not parse nvram name %s%s%s with value %s got %i\n",       \
  85                         fill->prefix, name, postfix, buf, err);         \
  86                 return;                                                 \
  87         }                                                               \
  88         if (allset && var == allset)                                    \
  89                 return;                                                 \
  90         *val = var;                                                     \
  91 }
  92
  93 NVRAM_READ_VAL(u8)
  94 NVRAM_READ_VAL(s8)
  95 NVRAM_READ_VAL(u16)
  96 NVRAM_READ_VAL(u32)
  97
  98 #undef NVRAM_READ_VAL
  99
 100 static void nvram_read_u32_2(const struct bcm47xx_sprom_fill *fill,
 101                              const char *name, u16 *val_lo, u16 *val_hi)
 102 {
 103         char buf[100];
 104         int err;
 105         u32 val;
 106
 107         err = get_nvram_var(fill, NULL, name, buf, sizeof(buf));
 108         if (err < 0)
 109                 return;
 110         err = kstrtou32(strim(buf), 0, &val);
 111         if (err) {
 112                 pr_warn("can not parse nvram name %s%s with value %s got %i\n",
 113                         fill->prefix, name, buf, err);
 114                 return;
 115         }
 116         *val_lo = (val & 0x0000FFFFU);
 117         *val_hi = (val & 0xFFFF0000U) >> 16;
 118 }
 119
 120 static void nvram_read_leddc(const struct bcm47xx_sprom_fill *fill,
 121                              const char *name, u8 *leddc_on_time,
 122                              u8 *leddc_off_time)
 123 {
 124         char buf[100];
 125         int err;
 126         u32 val;
 127
 128         err = get_nvram_var(fill, NULL, name, buf, sizeof(buf));
 129         if (err < 0)
 130                 return;
 131         err = kstrtou32(strim(buf), 0, &val);
 132         if (err) {
 133                 pr_warn("can not parse nvram name %s%s with value %s got %i\n",
 134                         fill->prefix, name, buf, err);
 135                 return;
 136         }
 137
 138         if (val == 0xffff || val == 0xffffffff)
 139                 return;
 140
 141         *leddc_on_time = val & 0xff;
 142         *leddc_off_time = (val >> 16) & 0xff;
 143 }
 144
 145 static void bcm47xx_nvram_parse_macaddr(char *buf, u8 macaddr[6])
 146 {
 147         if (strchr(buf, ':'))
 148                 sscanf(buf, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx", &macaddr[0],
 149                         &macaddr[1], &macaddr[2], &macaddr[3], &macaddr[4],
 150                         &macaddr[5]);
 151         else if (strchr(buf, '-'))
 152                 sscanf(buf, "%hhx-%hhx-%hhx-%hhx-%hhx-%hhx", &macaddr[0],
 153                         &macaddr[1], &macaddr[2], &macaddr[3], &macaddr[4],
 154                         &macaddr[5]);
 155         else
 156                 pr_warn("Can not parse mac address: %s\n", buf);
 157 }
 158
 159 static void nvram_read_macaddr(const struct bcm47xx_sprom_fill *fill,
 160                                const char *name, u8 val[6])
 161 {
 162         char buf[100];
 163         int err;
 164
 165         err = get_nvram_var(fill, NULL, name, buf, sizeof(buf));
 166         if (err < 0)
 167                 return;
 168
 169         bcm47xx_nvram_parse_macaddr(buf, val);
 170 }
 171
 172 static void nvram_read_alpha2(const struct bcm47xx_sprom_fill *fill,
 173                               const char *name, char val[2])
 174 {
 175         char buf[10];
 176         int err;
 177
 178         err = get_nvram_var(fill, NULL, name, buf, sizeof(buf));
 179         if (err < 0)
 180                 return;
 181         if (buf[0] == '0')
 182                 return;
 183         if (strlen(buf) > 2) {
 184                 pr_warn("alpha2 is too long %s\n", buf);
 185                 return;
 186         }
 187         memcpy(val, buf, 2);
 188 }
 189
 190 static void bcm47xx_sprom_fill_r1234589(struct ssb_sprom *sprom,
 191                                         const struct bcm47xx_sprom_fill *fill)
 192 {
 193         nvram_read_u16(fill, NULL, "devid", &sprom->dev_id, 0);
 194         nvram_read_u8(fill, NULL, "ledbh0", &sprom->gpio0, 0xff);
 195         nvram_read_u8(fill, NULL, "ledbh1", &sprom->gpio1, 0xff);
 196         nvram_read_u8(fill, NULL, "ledbh2", &sprom->gpio2, 0xff);
 197         nvram_read_u8(fill, NULL, "ledbh3", &sprom->gpio3, 0xff);
 198         nvram_read_u8(fill, NULL, "aa2g", &sprom->ant_available_bg, 0);
 199         nvram_read_u8(fill, NULL, "aa5g", &sprom->ant_available_a, 0);
 200         nvram_read_s8(fill, NULL, "ag0", &sprom->antenna_gain.a0, 0);
 201         nvram_read_s8(fill, NULL, "ag1", &sprom->antenna_gain.a1, 0);
 202         nvram_read_alpha2(fill, "ccode", sprom->alpha2);
 203 }
 204
 205 static void bcm47xx_sprom_fill_r12389(struct ssb_sprom *sprom,
 206                                       const struct bcm47xx_sprom_fill *fill)
 207 {
 208         nvram_read_u16(fill, NULL, "pa0b0", &sprom->pa0b0, 0);
 209         nvram_read_u16(fill, NULL, "pa0b1", &sprom->pa0b1, 0);
 210         nvram_read_u16(fill, NULL, "pa0b2", &sprom->pa0b2, 0);
 211         nvram_read_u8(fill, NULL, "pa0itssit", &sprom->itssi_bg, 0);
 212         nvram_read_u8(fill, NULL, "pa0maxpwr", &sprom->maxpwr_bg, 0);
 213         nvram_read_u16(fill, NULL, "pa1b0", &sprom->pa1b0, 0);
 214         nvram_read_u16(fill, NULL, "pa1b1", &sprom->pa1b1, 0);
 215         nvram_read_u16(fill, NULL, "pa1b2", &sprom->pa1b2, 0);
 216         nvram_read_u8(fill, NULL, "pa1itssit", &sprom->itssi_a, 0);
 217         nvram_read_u8(fill, NULL, "pa1maxpwr", &sprom->maxpwr_a, 0);
 218 }
 219
 220 static void bcm47xx_sprom_fill_r1(struct ssb_sprom *sprom,
 221                                   const struct bcm47xx_sprom_fill *fill)
 222 {
 223         nvram_read_u16(fill, NULL, "boardflags", &sprom->boardflags_lo, 0);
 224         nvram_read_u8(fill, NULL, "cc", &sprom->country_code, 0);
 225 }
 226
 227 static void bcm47xx_sprom_fill_r2389(struct ssb_sprom *sprom,
 228                                      const struct bcm47xx_sprom_fill *fill)
 229 {
 230         nvram_read_u8(fill, NULL, "opo", &sprom->opo, 0);
 231         nvram_read_u16(fill, NULL, "pa1lob0", &sprom->pa1lob0, 0);
 232         nvram_read_u16(fill, NULL, "pa1lob1", &sprom->pa1lob1, 0);
 233         nvram_read_u16(fill, NULL, "pa1lob2", &sprom->pa1lob2, 0);
 234         nvram_read_u16(fill, NULL, "pa1hib0", &sprom->pa1hib0, 0);
 235         nvram_read_u16(fill, NULL, "pa1hib1", &sprom->pa1hib1, 0);
 236         nvram_read_u16(fill, NULL, "pa1hib2", &sprom->pa1hib2, 0);
 237         nvram_read_u8(fill, NULL, "pa1lomaxpwr", &sprom->maxpwr_al, 0);
 238         nvram_read_u8(fill, NULL, "pa1himaxpwr", &sprom->maxpwr_ah, 0);
 239 }
 240
 241 static void bcm47xx_sprom_fill_r389(struct ssb_sprom *sprom,
 242                                     const struct bcm47xx_sprom_fill *fill)
 243 {
 244         nvram_read_u8(fill, NULL, "bxa2g", &sprom->bxa2g, 0);
 245         nvram_read_u8(fill, NULL, "rssisav2g", &sprom->rssisav2g, 0);
 246         nvram_read_u8(fill, NULL, "rssismc2g", &sprom->rssismc2g, 0);
 247         nvram_read_u8(fill, NULL, "rssismf2g", &sprom->rssismf2g, 0);
 248         nvram_read_u8(fill, NULL, "bxa5g", &sprom->bxa5g, 0);
 249         nvram_read_u8(fill, NULL, "rssisav5g", &sprom->rssisav5g, 0);
 250         nvram_read_u8(fill, NULL, "rssismc5g", &sprom->rssismc5g, 0);
 251         nvram_read_u8(fill, NULL, "rssismf5g", &sprom->rssismf5g, 0);
 252         nvram_read_u8(fill, NULL, "tri2g", &sprom->tri2g, 0);
 253         nvram_read_u8(fill, NULL, "tri5g", &sprom->tri5g, 0);
 254         nvram_read_u8(fill, NULL, "tri5gl", &sprom->tri5gl, 0);
 255         nvram_read_u8(fill, NULL, "tri5gh", &sprom->tri5gh, 0);
 256         nvram_read_s8(fill, NULL, "rxpo2g", &sprom->rxpo2g, 0);
 257         nvram_read_s8(fill, NULL, "rxpo5g", &sprom->rxpo5g, 0);
 258 }
 259
 260 static void bcm47xx_sprom_fill_r3(struct ssb_sprom *sprom,
 261                                   const struct bcm47xx_sprom_fill *fill)
 262 {
 263         nvram_read_u8(fill, NULL, "regrev", &sprom->regrev, 0);
 264         nvram_read_leddc(fill, "leddc", &sprom->leddc_on_time,
 265                          &sprom->leddc_off_time);
 266 }
 267
 268 static void bcm47xx_sprom_fill_r4589(struct ssb_sprom *sprom,
 269                                      const struct bcm47xx_sprom_fill *fill)
 270 {
 271         nvram_read_u8(fill, NULL, "regrev", &sprom->regrev, 0);
 272         nvram_read_s8(fill, NULL, "ag2", &sprom->antenna_gain.a2, 0);
 273         nvram_read_s8(fill, NULL, "ag3", &sprom->antenna_gain.a3, 0);
 274         nvram_read_u8(fill, NULL, "txchain", &sprom->txchain, 0xf);
 275         nvram_read_u8(fill, NULL, "rxchain", &sprom->rxchain, 0xf);
 276         nvram_read_u8(fill, NULL, "antswitch", &sprom->antswitch, 0xff);
 277         nvram_read_leddc(fill, "leddc", &sprom->leddc_on_time,
 278                          &sprom->leddc_off_time);
 279 }
 280
 281 static void bcm47xx_sprom_fill_r458(struct ssb_sprom *sprom,
 282                                     const struct bcm47xx_sprom_fill *fill)
 283 {
 284         nvram_read_u16(fill, NULL, "cck2gpo", &sprom->cck2gpo, 0);
 285         nvram_read_u32(fill, NULL, "ofdm2gpo", &sprom->ofdm2gpo, 0);
 286         nvram_read_u32(fill, NULL, "ofdm5gpo", &sprom->ofdm5gpo, 0);
 287         nvram_read_u32(fill, NULL, "ofdm5glpo", &sprom->ofdm5glpo, 0);
 288         nvram_read_u32(fill, NULL, "ofdm5ghpo", &sprom->ofdm5ghpo, 0);
 289         nvram_read_u16(fill, NULL, "cddpo", &sprom->cddpo, 0);
 290         nvram_read_u16(fill, NULL, "stbcpo", &sprom->stbcpo, 0);
 291         nvram_read_u16(fill, NULL, "bw40po", &sprom->bw40po, 0);
 292         nvram_read_u16(fill, NULL, "bwduppo", &sprom->bwduppo, 0);
 293         nvram_read_u16(fill, NULL, "mcs2gpo0", &sprom->mcs2gpo[0], 0);
 294         nvram_read_u16(fill, NULL, "mcs2gpo1", &sprom->mcs2gpo[1], 0);
 295         nvram_read_u16(fill, NULL, "mcs2gpo2", &sprom->mcs2gpo[2], 0);
 296         nvram_read_u16(fill, NULL, "mcs2gpo3", &sprom->mcs2gpo[3], 0);
 297         nvram_read_u16(fill, NULL, "mcs2gpo4", &sprom->mcs2gpo[4], 0);
 298         nvram_read_u16(fill, NULL, "mcs2gpo5", &sprom->mcs2gpo[5], 0);
 299         nvram_read_u16(fill, NULL, "mcs2gpo6", &sprom->mcs2gpo[6], 0);
 300         nvram_read_u16(fill, NULL, "mcs2gpo7", &sprom->mcs2gpo[7], 0);
 301         nvram_read_u16(fill, NULL, "mcs5gpo0", &sprom->mcs5gpo[0], 0);
 302         nvram_read_u16(fill, NULL, "mcs5gpo1", &sprom->mcs5gpo[1], 0);
 303         nvram_read_u16(fill, NULL, "mcs5gpo2", &sprom->mcs5gpo[2], 0);
 304         nvram_read_u16(fill, NULL, "mcs5gpo3", &sprom->mcs5gpo[3], 0);
 305         nvram_read_u16(fill, NULL, "mcs5gpo4", &sprom->mcs5gpo[4], 0);
 306         nvram_read_u16(fill, NULL, "mcs5gpo5", &sprom->mcs5gpo[5], 0);
 307         nvram_read_u16(fill, NULL, "mcs5gpo6", &sprom->mcs5gpo[6], 0);
 308         nvram_read_u16(fill, NULL, "mcs5gpo7", &sprom->mcs5gpo[7], 0);
 309         nvram_read_u16(fill, NULL, "mcs5glpo0", &sprom->mcs5glpo[0], 0);
 310         nvram_read_u16(fill, NULL, "mcs5glpo1", &sprom->mcs5glpo[1], 0);
 311         nvram_read_u16(fill, NULL, "mcs5glpo2", &sprom->mcs5glpo[2], 0);
 312         nvram_read_u16(fill, NULL, "mcs5glpo3", &sprom->mcs5glpo[3], 0);
 313         nvram_read_u16(fill, NULL, "mcs5glpo4", &sprom->mcs5glpo[4], 0);
 314         nvram_read_u16(fill, NULL, "mcs5glpo5", &sprom->mcs5glpo[5], 0);
 315         nvram_read_u16(fill, NULL, "mcs5glpo6", &sprom->mcs5glpo[6], 0);
 316         nvram_read_u16(fill, NULL, "mcs5glpo7", &sprom->mcs5glpo[7], 0);
 317         nvram_read_u16(fill, NULL, "mcs5ghpo0", &sprom->mcs5ghpo[0], 0);
 318         nvram_read_u16(fill, NULL, "mcs5ghpo1", &sprom->mcs5ghpo[1], 0);
 319         nvram_read_u16(fill, NULL, "mcs5ghpo2", &sprom->mcs5ghpo[2], 0);
 320         nvram_read_u16(fill, NULL, "mcs5ghpo3", &sprom->mcs5ghpo[3], 0);
 321         nvram_read_u16(fill, NULL, "mcs5ghpo4", &sprom->mcs5ghpo[4], 0);
 322         nvram_read_u16(fill, NULL, "mcs5ghpo5", &sprom->mcs5ghpo[5], 0);
 323         nvram_read_u16(fill, NULL, "mcs5ghpo6", &sprom->mcs5ghpo[6], 0);
 324         nvram_read_u16(fill, NULL, "mcs5ghpo7", &sprom->mcs5ghpo[7], 0);
 325 }
 326
 327 static void bcm47xx_sprom_fill_r45(struct ssb_sprom *sprom,
 328                                    const struct bcm47xx_sprom_fill *fill)
 329 {
 330         nvram_read_u8(fill, NULL, "txpid2ga0", &sprom->txpid2g[0], 0);
 331         nvram_read_u8(fill, NULL, "txpid2ga1", &sprom->txpid2g[1], 0);
 332         nvram_read_u8(fill, NULL, "txpid2ga2", &sprom->txpid2g[2], 0);
 333         nvram_read_u8(fill, NULL, "txpid2ga3", &sprom->txpid2g[3], 0);
 334         nvram_read_u8(fill, NULL, "txpid5ga0", &sprom->txpid5g[0], 0);
 335         nvram_read_u8(fill, NULL, "txpid5ga1", &sprom->txpid5g[1], 0);
 336         nvram_read_u8(fill, NULL, "txpid5ga2", &sprom->txpid5g[2], 0);
 337         nvram_read_u8(fill, NULL, "txpid5ga3", &sprom->txpid5g[3], 0);
 338         nvram_read_u8(fill, NULL, "txpid5gla0", &sprom->txpid5gl[0], 0);
 339         nvram_read_u8(fill, NULL, "txpid5gla1", &sprom->txpid5gl[1], 0);
 340         nvram_read_u8(fill, NULL, "txpid5gla2", &sprom->txpid5gl[2], 0);
 341         nvram_read_u8(fill, NULL, "txpid5gla3", &sprom->txpid5gl[3], 0);
 342         nvram_read_u8(fill, NULL, "txpid5gha0", &sprom->txpid5gh[0], 0);
 343         nvram_read_u8(fill, NULL, "txpid5gha1", &sprom->txpid5gh[1], 0);
 344         nvram_read_u8(fill, NULL, "txpid5gha2", &sprom->txpid5gh[2], 0);
 345         nvram_read_u8(fill, NULL, "txpid5gha3", &sprom->txpid5gh[3], 0);
 346 }
 347
 348 static void bcm47xx_sprom_fill_r89(struct ssb_sprom *sprom,
 349                                    const struct bcm47xx_sprom_fill *fill)
 350 {
 351         nvram_read_u8(fill, NULL, "tssipos2g", &sprom->fem.ghz2.tssipos, 0);
 352         nvram_read_u8(fill, NULL, "extpagain2g", &sprom->fem.ghz2.extpa_gain, 0);
 353         nvram_read_u8(fill, NULL, "pdetrange2g", &sprom->fem.ghz2.pdet_range, 0);
 354         nvram_read_u8(fill, NULL, "triso2g", &sprom->fem.ghz2.tr_iso, 0);
 355         nvram_read_u8(fill, NULL, "antswctl2g", &sprom->fem.ghz2.antswlut, 0);
 356         nvram_read_u8(fill, NULL, "tssipos5g", &sprom->fem.ghz5.tssipos, 0);
 357         nvram_read_u8(fill, NULL, "extpagain5g", &sprom->fem.ghz5.extpa_gain, 0);
 358         nvram_read_u8(fill, NULL, "pdetrange5g", &sprom->fem.ghz5.pdet_range, 0);
 359         nvram_read_u8(fill, NULL, "triso5g", &sprom->fem.ghz5.tr_iso, 0);
 360         nvram_read_u8(fill, NULL, "antswctl5g", &sprom->fem.ghz5.antswlut, 0);
 361         nvram_read_u8(fill, NULL, "tempthresh", &sprom->tempthresh, 0);
 362         nvram_read_u8(fill, NULL, "tempoffset", &sprom->tempoffset, 0);
 363         nvram_read_u16(fill, NULL, "rawtempsense", &sprom->rawtempsense, 0);
 364         nvram_read_u8(fill, NULL, "measpower", &sprom->measpower, 0);
 365         nvram_read_u8(fill, NULL, "tempsense_slope", &sprom->tempsense_slope, 0);
 366         nvram_read_u8(fill, NULL, "tempcorrx", &sprom->tempcorrx, 0);
 367         nvram_read_u8(fill, NULL, "tempsense_option", &sprom->tempsense_option, 0);
 368         nvram_read_u8(fill, NULL, "freqoffset_corr", &sprom->freqoffset_corr, 0);
 369         nvram_read_u8(fill, NULL, "iqcal_swp_dis", &sprom->iqcal_swp_dis, 0);
 370         nvram_read_u8(fill, NULL, "hw_iqcal_en", &sprom->hw_iqcal_en, 0);
 371         nvram_read_u8(fill, NULL, "elna2g", &sprom->elna2g, 0);
 372         nvram_read_u8(fill, NULL, "elna5g", &sprom->elna5g, 0);
 373         nvram_read_u8(fill, NULL, "phycal_tempdelta", &sprom->phycal_tempdelta, 0);
 374         nvram_read_u8(fill, NULL, "temps_period", &sprom->temps_period, 0);
 375         nvram_read_u8(fill, NULL, "temps_hysteresis", &sprom->temps_hysteresis, 0);
 376         nvram_read_u8(fill, NULL, "measpower1", &sprom->measpower1, 0);
 377         nvram_read_u8(fill, NULL, "measpower2", &sprom->measpower2, 0);
 378         nvram_read_u8(fill, NULL, "rxgainerr2ga0", &sprom->rxgainerr2ga[0], 0);
 379         nvram_read_u8(fill, NULL, "rxgainerr2ga1", &sprom->rxgainerr2ga[1], 0);
 380         nvram_read_u8(fill, NULL, "rxgainerr2ga2", &sprom->rxgainerr2ga[2], 0);
 381         nvram_read_u8(fill, NULL, "rxgainerr5gla0", &sprom->rxgainerr5gla[0], 0);
 382         nvram_read_u8(fill, NULL, "rxgainerr5gla1", &sprom->rxgainerr5gla[1], 0);
 383         nvram_read_u8(fill, NULL, "rxgainerr5gla2", &sprom->rxgainerr5gla[2], 0);
 384         nvram_read_u8(fill, NULL, "rxgainerr5gma0", &sprom->rxgainerr5gma[0], 0);
 385         nvram_read_u8(fill, NULL, "rxgainerr5gma1", &sprom->rxgainerr5gma[1], 0);
 386         nvram_read_u8(fill, NULL, "rxgainerr5gma2", &sprom->rxgainerr5gma[2], 0);
 387         nvram_read_u8(fill, NULL, "rxgainerr5gha0", &sprom->rxgainerr5gha[0], 0);
 388         nvram_read_u8(fill, NULL, "rxgainerr5gha1", &sprom->rxgainerr5gha[1], 0);
 389         nvram_read_u8(fill, NULL, "rxgainerr5gha2", &sprom->rxgainerr5gha[2], 0);
 390         nvram_read_u8(fill, NULL, "rxgainerr5gua0", &sprom->rxgainerr5gua[0], 0);
 391         nvram_read_u8(fill, NULL, "rxgainerr5gua1", &sprom->rxgainerr5gua[1], 0);
 392         nvram_read_u8(fill, NULL, "rxgainerr5gua2", &sprom->rxgainerr5gua[2], 0);
 393         nvram_read_u8(fill, NULL, "noiselvl2ga0", &sprom->noiselvl2ga[0], 0);
 394         nvram_read_u8(fill, NULL, "noiselvl2ga1", &sprom->noiselvl2ga[1], 0);
 395         nvram_read_u8(fill, NULL, "noiselvl2ga2", &sprom->noiselvl2ga[2], 0);
 396         nvram_read_u8(fill, NULL, "noiselvl5gla0", &sprom->noiselvl5gla[0], 0);
 397         nvram_read_u8(fill, NULL, "noiselvl5gla1", &sprom->noiselvl5gla[1], 0);
 398         nvram_read_u8(fill, NULL, "noiselvl5gla2", &sprom->noiselvl5gla[2], 0);
 399         nvram_read_u8(fill, NULL, "noiselvl5gma0", &sprom->noiselvl5gma[0], 0);
 400         nvram_read_u8(fill, NULL, "noiselvl5gma1", &sprom->noiselvl5gma[1], 0);
 401         nvram_read_u8(fill, NULL, "noiselvl5gma2", &sprom->noiselvl5gma[2], 0);
 402         nvram_read_u8(fill, NULL, "noiselvl5gha0", &sprom->noiselvl5gha[0], 0);
 403         nvram_read_u8(fill, NULL, "noiselvl5gha1", &sprom->noiselvl5gha[1], 0);
 404         nvram_read_u8(fill, NULL, "noiselvl5gha2", &sprom->noiselvl5gha[2], 0);
 405         nvram_read_u8(fill, NULL, "noiselvl5gua0", &sprom->noiselvl5gua[0], 0);
 406         nvram_read_u8(fill, NULL, "noiselvl5gua1", &sprom->noiselvl5gua[1], 0);
 407         nvram_read_u8(fill, NULL, "noiselvl5gua2", &sprom->noiselvl5gua[2], 0);
 408         nvram_read_u8(fill, NULL, "pcieingress_war", &sprom->pcieingress_war, 0);
 409 }
 410
 411 static void bcm47xx_sprom_fill_r9(struct ssb_sprom *sprom,
 412                                   const struct bcm47xx_sprom_fill *fill)
 413 {
 414         nvram_read_u16(fill, NULL, "cckbw202gpo", &sprom->cckbw202gpo, 0);
 415         nvram_read_u16(fill, NULL, "cckbw20ul2gpo", &sprom->cckbw20ul2gpo, 0);
 416         nvram_read_u32(fill, NULL, "legofdmbw202gpo", &sprom->legofdmbw202gpo, 0);
 417         nvram_read_u32(fill, NULL, "legofdmbw20ul2gpo", &sprom->legofdmbw20ul2gpo, 0);
 418         nvram_read_u32(fill, NULL, "legofdmbw205glpo", &sprom->legofdmbw205glpo, 0);
 419         nvram_read_u32(fill, NULL, "legofdmbw20ul5glpo", &sprom->legofdmbw20ul5glpo, 0);
 420         nvram_read_u32(fill, NULL, "legofdmbw205gmpo", &sprom->legofdmbw205gmpo, 0);
 421         nvram_read_u32(fill, NULL, "legofdmbw20ul5gmpo", &sprom->legofdmbw20ul5gmpo, 0);
 422         nvram_read_u32(fill, NULL, "legofdmbw205ghpo", &sprom->legofdmbw205ghpo, 0);
 423         nvram_read_u32(fill, NULL, "legofdmbw20ul5ghpo", &sprom->legofdmbw20ul5ghpo, 0);
 424         nvram_read_u32(fill, NULL, "mcsbw202gpo", &sprom->mcsbw202gpo, 0);
 425         nvram_read_u32(fill, NULL, "mcsbw20ul2gpo", &sprom->mcsbw20ul2gpo, 0);
 426         nvram_read_u32(fill, NULL, "mcsbw402gpo", &sprom->mcsbw402gpo, 0);
 427         nvram_read_u32(fill, NULL, "mcsbw205glpo", &sprom->mcsbw205glpo, 0);
 428         nvram_read_u32(fill, NULL, "mcsbw20ul5glpo", &sprom->mcsbw20ul5glpo, 0);
 429         nvram_read_u32(fill, NULL, "mcsbw405glpo", &sprom->mcsbw405glpo, 0);
 430         nvram_read_u32(fill, NULL, "mcsbw205gmpo", &sprom->mcsbw205gmpo, 0);
 431         nvram_read_u32(fill, NULL, "mcsbw20ul5gmpo", &sprom->mcsbw20ul5gmpo, 0);
 432         nvram_read_u32(fill, NULL, "mcsbw405gmpo", &sprom->mcsbw405gmpo, 0);
 433         nvram_read_u32(fill, NULL, "mcsbw205ghpo", &sprom->mcsbw205ghpo, 0);
 434         nvram_read_u32(fill, NULL, "mcsbw20ul5ghpo", &sprom->mcsbw20ul5ghpo, 0);
 435         nvram_read_u32(fill, NULL, "mcsbw405ghpo", &sprom->mcsbw405ghpo, 0);
 436         nvram_read_u16(fill, NULL, "mcs32po", &sprom->mcs32po, 0);
 437         nvram_read_u16(fill, NULL, "legofdm40duppo", &sprom->legofdm40duppo, 0);
 438         nvram_read_u8(fill, NULL, "sar2g", &sprom->sar2g, 0);
 439         nvram_read_u8(fill, NULL, "sar5g", &sprom->sar5g, 0);
 440 }
 441
 442 static void bcm47xx_sprom_fill_path_r4589(struct ssb_sprom *sprom,
 443                                           const struct bcm47xx_sprom_fill *fill)
 444 {
 445         char postfix[2];
 446         int i;
 447
 448         for (i = 0; i < ARRAY_SIZE(sprom->core_pwr_info); i++) {
 449                 struct ssb_sprom_core_pwr_info *pwr_info = &sprom->core_pwr_info[i];
 450
 451                 snprintf(postfix, sizeof(postfix), "%i", i);
 452                 nvram_read_u8(fill, postfix, "maxp2ga", &pwr_info->maxpwr_2g, 0);
 453                 nvram_read_u8(fill, postfix, "itt2ga", &pwr_info->itssi_2g, 0);
 454                 nvram_read_u8(fill, postfix, "itt5ga", &pwr_info->itssi_5g, 0);
 455                 nvram_read_u16(fill, postfix, "pa2gw0a", &pwr_info->pa_2g[0], 0);
 456                 nvram_read_u16(fill, postfix, "pa2gw1a", &pwr_info->pa_2g[1], 0);
 457                 nvram_read_u16(fill, postfix, "pa2gw2a", &pwr_info->pa_2g[2], 0);
 458                 nvram_read_u8(fill, postfix, "maxp5ga", &pwr_info->maxpwr_5g, 0);
 459                 nvram_read_u8(fill, postfix, "maxp5gha", &pwr_info->maxpwr_5gh, 0);
 460                 nvram_read_u8(fill, postfix, "maxp5gla", &pwr_info->maxpwr_5gl, 0);
 461                 nvram_read_u16(fill, postfix, "pa5gw0a", &pwr_info->pa_5g[0], 0);
 462                 nvram_read_u16(fill, postfix, "pa5gw1a", &pwr_info->pa_5g[1], 0);
 463                 nvram_read_u16(fill, postfix, "pa5gw2a", &pwr_info->pa_5g[2], 0);
 464                 nvram_read_u16(fill, postfix, "pa5glw0a", &pwr_info->pa_5gl[0], 0);
 465                 nvram_read_u16(fill, postfix, "pa5glw1a", &pwr_info->pa_5gl[1], 0);
 466                 nvram_read_u16(fill, postfix, "pa5glw2a", &pwr_info->pa_5gl[2], 0);
 467                 nvram_read_u16(fill, postfix, "pa5ghw0a", &pwr_info->pa_5gh[0], 0);
 468                 nvram_read_u16(fill, postfix, "pa5ghw1a", &pwr_info->pa_5gh[1], 0);
 469                 nvram_read_u16(fill, postfix, "pa5ghw2a", &pwr_info->pa_5gh[2], 0);
 470         }
 471 }
 472
 473 static void bcm47xx_sprom_fill_path_r45(struct ssb_sprom *sprom,
 474                                         const struct bcm47xx_sprom_fill *fill)
 475 {
 476         char postfix[2];
 477         int i;
 478
 479         for (i = 0; i < ARRAY_SIZE(sprom->core_pwr_info); i++) {
 480                 struct ssb_sprom_core_pwr_info *pwr_info = &sprom->core_pwr_info[i];
 481
 482                 snprintf(postfix, sizeof(postfix), "%i", i);
 483                 nvram_read_u16(fill, postfix, "pa2gw3a", &pwr_info->pa_2g[3], 0);
 484                 nvram_read_u16(fill, postfix, "pa5gw3a", &pwr_info->pa_5g[3], 0);
 485                 nvram_read_u16(fill, postfix, "pa5glw3a", &pwr_info->pa_5gl[3], 0);
 486                 nvram_read_u16(fill, postfix, "pa5ghw3a", &pwr_info->pa_5gh[3], 0);
 487         }
 488 }
 489
 490 static bool bcm47xx_is_valid_mac(u8 *mac)
 491 {
 492         return mac && !(mac[0] == 0x00 && mac[1] == 0x90 && mac[2] == 0x4c);
 493 }
 494
 495 static int bcm47xx_increase_mac_addr(u8 *mac, u8 num)
 496 {
 497         u8 *oui = mac + ETH_ALEN/2 - 1;
 498         u8 *p = mac + ETH_ALEN - 1;
 499
 500         do {
 501                 (*p) += num;
 502                 if (*p > num)
 503                         break;
 504                 p--;
 505                 num = 1;
 506         } while (p != oui);
 507
 508         if (p == oui) {
 509                 pr_err("unable to fetch mac address\n");
 510                 return -ENOENT;
 511         }
 512         return 0;
 513 }
 514
 515 /*
 516  * This is a global counter because different instances of sprom will
 517  * access the same nvram.
 518  */
 519 static int mac_addr_used = 2;
 520
 521 static void bcm47xx_sprom_fill_ethernet(struct ssb_sprom *sprom,
 522                                         const struct bcm47xx_sprom_fill *fill)
 523 {
 524         nvram_read_macaddr(fill, "et0macaddr", sprom->et0mac);
 525         nvram_read_u8(fill, NULL, "et0mdcport", &sprom->et0mdcport, 0);
 526         nvram_read_u8(fill, NULL, "et0phyaddr", &sprom->et0phyaddr, 0);
 527
 528         nvram_read_macaddr(fill, "et1macaddr", sprom->et1mac);
 529         nvram_read_u8(fill, NULL, "et1mdcport", &sprom->et1mdcport, 0);
 530         nvram_read_u8(fill, NULL, "et1phyaddr", &sprom->et1phyaddr, 0);
 531
 532         nvram_read_macaddr(fill, "macaddr", sprom->il0mac);
 533         nvram_read_macaddr(fill, "il0macaddr", sprom->il0mac);
 534
 535         /*
 536          * The address prefix 00:90:4C is used by Broadcom in their initial
 537          * configuration. When a mac address with the prefix 00:90:4C is used
 538          * all devices from the same series are sharing the same mac address.
 539          * To prevent mac address collisions we replace them with a mac address
 540          * based on the base address.
 541          */
 542         if (!bcm47xx_is_valid_mac(sprom->il0mac)) {
 543                 u8 mac[6];
 544                 struct bcm47xx_sprom_fill fill_no_prefix;
 545
 546                 memcpy(&fill_no_prefix, fill, sizeof(fill_no_prefix));
 547                 fill_no_prefix.prefix = NULL;
 548
 549                 nvram_read_macaddr(&fill_no_prefix, "et0macaddr", mac);
 550                 if (bcm47xx_is_valid_mac(mac)) {
 551                         int err = bcm47xx_increase_mac_addr(mac, mac_addr_used);
 552
 553                         if (!err) {
 554                                 ether_addr_copy(sprom->il0mac, mac);
 555                                 mac_addr_used++;
 556                         }
 557                 }
 558         }
 559 }
 560
 561 static void bcm47xx_sprom_fill_board_data(struct ssb_sprom *sprom,
 562                                           const struct bcm47xx_sprom_fill *fill)
 563 {
 564         nvram_read_u16(fill, NULL, "boardrev", &sprom->board_rev, 0);
 565         nvram_read_u16(fill, NULL, "boardnum", &sprom->board_num, 0);
 566         nvram_read_u16(fill, NULL, "boardtype", &sprom->board_type, 0);
 567         nvram_read_u32_2(fill, "boardflags", &sprom->boardflags_lo,
 568                          &sprom->boardflags_hi);
 569         nvram_read_u32_2(fill, "boardflags2", &sprom->boardflags2_lo,
 570                          &sprom->boardflags2_hi);
 571 }
 572
 573 static void bcm47xx_sprom_fill(struct ssb_sprom *sprom,
 574                                const struct bcm47xx_sprom_fill *fill)
 575 {
 576         bcm47xx_sprom_fill_ethernet(sprom, fill);
 577         bcm47xx_sprom_fill_board_data(sprom, fill);
 578
 579         nvram_read_u8(fill, NULL, "sromrev", &sprom->revision, 0);
 580
 581         switch (sprom->revision) {
 582         case 1:
 583                 bcm47xx_sprom_fill_r1234589(sprom, fill);
 584                 bcm47xx_sprom_fill_r12389(sprom, fill);
 585                 bcm47xx_sprom_fill_r1(sprom, fill);
 586                 break;
 587         case 2:
 588                 bcm47xx_sprom_fill_r1234589(sprom, fill);
 589                 bcm47xx_sprom_fill_r12389(sprom, fill);
 590                 bcm47xx_sprom_fill_r2389(sprom, fill);
 591                 break;
 592         case 3:
 593                 bcm47xx_sprom_fill_r1234589(sprom, fill);
 594                 bcm47xx_sprom_fill_r12389(sprom, fill);
 595                 bcm47xx_sprom_fill_r2389(sprom, fill);
 596                 bcm47xx_sprom_fill_r389(sprom, fill);
 597                 bcm47xx_sprom_fill_r3(sprom, fill);
 598                 break;
 599         case 4:
 600         case 5:
 601                 bcm47xx_sprom_fill_r1234589(sprom, fill);
 602                 bcm47xx_sprom_fill_r4589(sprom, fill);
 603                 bcm47xx_sprom_fill_r458(sprom, fill);
 604                 bcm47xx_sprom_fill_r45(sprom, fill);
 605                 bcm47xx_sprom_fill_path_r4589(sprom, fill);
 606                 bcm47xx_sprom_fill_path_r45(sprom, fill);
 607                 break;
 608         case 8:
 609                 bcm47xx_sprom_fill_r1234589(sprom, fill);
 610                 bcm47xx_sprom_fill_r12389(sprom, fill);
 611                 bcm47xx_sprom_fill_r2389(sprom, fill);
 612                 bcm47xx_sprom_fill_r389(sprom, fill);
 613                 bcm47xx_sprom_fill_r4589(sprom, fill);
 614                 bcm47xx_sprom_fill_r458(sprom, fill);
 615                 bcm47xx_sprom_fill_r89(sprom, fill);
 616                 bcm47xx_sprom_fill_path_r4589(sprom, fill);
 617                 break;
 618         case 9:
 619                 bcm47xx_sprom_fill_r1234589(sprom, fill);
 620                 bcm47xx_sprom_fill_r12389(sprom, fill);
 621                 bcm47xx_sprom_fill_r2389(sprom, fill);
 622                 bcm47xx_sprom_fill_r389(sprom, fill);
 623                 bcm47xx_sprom_fill_r4589(sprom, fill);
 624                 bcm47xx_sprom_fill_r89(sprom, fill);
 625                 bcm47xx_sprom_fill_r9(sprom, fill);
 626                 bcm47xx_sprom_fill_path_r4589(sprom, fill);
 627                 break;
 628         default:
 629                 pr_warn("Unsupported SPROM revision %d detected. Will extract v1\n",
 630                         sprom->revision);
 631                 sprom->revision = 1;
 632                 bcm47xx_sprom_fill_r1234589(sprom, fill);
 633                 bcm47xx_sprom_fill_r12389(sprom, fill);
 634                 bcm47xx_sprom_fill_r1(sprom, fill);
 635         }
 636 }
 637
 638 static int bcm47xx_sprom_getenv(const struct bcm47xx_sprom_fill *fill,
 639                                 const char *name, char *val, size_t val_len)
 640 {
 641         return bcm47xx_nvram_getenv(name, val, val_len);
 642 };
 643
 644 /* FIXME: This should not be static, but some callback argument */
 645 static struct platform_device *sprom_pdev = NULL;
 646
 647 static char prefix[20];
 648
 649 static void bcm47xx_sprom_apply_prefix_alias(char *prefix, size_t prefix_len)
 650 {
 651         size_t needle_len = strlen(prefix) - 1;
 652         char nvram_var[10];
 653         char buf[20];
 654         int i;
 655
 656         if (needle_len <= 0 || prefix[needle_len] != '/')
 657                 return;
 658
 659         for (i = 0; i < 3; i++) {
 660                 if (snprintf(nvram_var, sizeof(nvram_var), "devpath%d", i) <= 0)
 661                         continue;
 662                 if (bcm47xx_nvram_getenv(nvram_var, buf, sizeof(buf)) < 0)
 663                         continue;
 664                 if (strlen(buf) == needle_len && !strncmp(buf, prefix, needle_len)) {
 665                         snprintf(prefix, prefix_len, "%d:", i);
 666                         return;
 667                 }
 668         }
 669 }
 670
 671 /*
 672  * This function has to be called in a very precise moment. It has to be done:
 673  * 1) After bcma registers flash cores, so we can read NVRAM.
 674  * 2) Before any code needs SPROM content.
 675  *
 676  * This can be achieved only by using bcma callback.
 677  */
 678 static int bcm47xx_sprom_init(struct bcma_bus *bus, struct ssb_sprom *out)
 679 {
 680         struct platform_device *pdev = sprom_pdev;
 681         struct device *dev = &pdev->dev;
 682         struct device_node *np = dev->of_node;
 683         const __be32 *handle;
 684         struct device_node *nvram_node;
 685         struct platform_device *nvram_dev;
 686         struct bcm47xx_sprom_fill fill;
 687
 688         handle = of_get_property(np, "nvram", NULL);
 689         if (!handle)
 690                 return -ENOMEM;
 691
 692         nvram_node = of_find_node_by_phandle(be32_to_cpup(handle));
 693         if (!nvram_node)
 694                 return -ENOMEM;
 695
 696         nvram_dev = of_find_device_by_node(nvram_node);
 697         if (!nvram_dev)
 698                 return -ENOMEM;
 699
 700         switch (bus->hosttype) {
 701         case BCMA_HOSTTYPE_PCI:
 702                 snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
 703                          pci_domain_nr(bus->host_pci->bus) + 1,
 704                          bus->host_pci->bus->number);
 705                 bcm47xx_sprom_apply_prefix_alias(prefix, sizeof(prefix));
 706                 fill.prefix = prefix;
 707                 break;
 708         case BCMA_HOSTTYPE_SOC:
 709                 fill.prefix = of_get_property(np, "prefix", NULL);
 710                 break;
 711         default:
 712                 pr_err("Unable to fill SPROM for given hosttype.\n");
 713                 return -EINVAL;
 714         }
 715
 716         fill.fallback = false;
 717         fill.getenv = bcm47xx_sprom_getenv;
 718         fill.priv = nvram_dev;
 719
 720         bcm47xx_sprom_fill(out, &fill);
 721
 722         return 0;
 723 };
 724
 725 static int bcm47xx_sprom_probe(struct platform_device *pdev)
 726 {
 727         /* This is the only way to make pdev accessible to the callback */
 728         sprom_pdev = pdev;
 729
 730         return bcma_arch_register_fallback_sprom(&bcm47xx_sprom_init);
 731 }
 732
 733 static const struct of_device_id bcm47xx_sprom_of_match_table[] = {
 734         { .compatible = "brcm,bcm47xx-sprom", },
 735         {},
 736 };
 737 MODULE_DEVICE_TABLE(of, bcm47xx_sprom_of_match_table);
 738
 739 static struct platform_driver bcm47xx_sprom_driver = {
 740         .driver = {
 741                 .owner = THIS_MODULE,
 742                 .name = "bcm47xx-sprom",
 743                 .of_match_table = bcm47xx_sprom_of_match_table,
 744                 /* driver unloading/unbinding currently not supported */
 745                 .suppress_bind_attrs = true,
 746         },
 747         .probe = bcm47xx_sprom_probe,
 748 };
 749 module_platform_driver(bcm47xx_sprom_driver);
 750
 751 MODULE_AUTHOR("Hauke Mehrtens <hauke@hauke-m.de>");
 752 MODULE_LICENSE("GPL v2");