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

   1 /*
   2  *  Copyright (C) 2004 Florian Schirmer <jolt@tuxbox.org>
   3  *  Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
   4  *  Copyright (C) 2006 Michael Buesch <m@bues.ch>
   5  *  Copyright (C) 2010 Waldemar Brodkorb <wbx@openadk.org>
   6  *  Copyright (C) 2010-2012 Hauke Mehrtens <hauke@hauke-m.de>
   7  *
   8  *  This program is free software; you can redistribute  it and/or modify it
   9  *  under  the terms of  the GNU General  Public License as published by the
  10  *  Free Software Foundation;  either version 2 of the  License, or (at your
  11  *  option) any later version.
  12  *
  13  *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
  14  *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
  15  *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
  16  *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
  17  *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  18  *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
  19  *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  20  *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
  21  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  22  *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  23  *
  24  *  You should have received a copy of the  GNU General Public License along
  25  *  with this program; if not, write  to the Free Software Foundation, Inc.,
  26  *  675 Mass Ave, Cambridge, MA 02139, USA.
  27  */
  28
  29 #include <linux/types.h>
  30 #include <linux/module.h>
  31 #include <linux/kernel.h>
  32 #include <linux/string.h>
  33 #include <linux/of_address.h>
  34 #include <linux/device.h>
  35 #include <linux/platform_device.h>
  36 #include <linux/of_platform.h>
  37 #include <linux/io.h>
  38 #include <linux/ssb/ssb.h>
  39 #include <linux/bcma/bcma.h>
  40 #include <linux/bcm47xx_nvram.h>
  41 #include <linux/if_ether.h>
  42 #include <linux/etherdevice.h>
  43
  44 static void create_key(const char *prefix, const char *postfix,
  45                        const char *name, char *buf, int len)
  46 {
  47         if (prefix && postfix)
  48                 snprintf(buf, len, "%s%s%s", prefix, name, postfix);
  49         else if (prefix)
  50                 snprintf(buf, len, "%s%s", prefix, name);
  51         else if (postfix)
  52                 snprintf(buf, len, "%s%s", name, postfix);
  53         else
  54                 snprintf(buf, len, "%s", name);
  55 }
  56
  57 static int get_nvram_var(const char *prefix, const char *postfix,
  58                          const char *name, char *buf, int len, bool fallback)
  59 {
  60         char key[40];
  61         int err;
  62
  63         create_key(prefix, postfix, name, key, sizeof(key));
  64
  65         err = bcm47xx_nvram_getenv(key, buf, len);
  66         if (fallback && err == -ENOENT && prefix) {
  67                 create_key(NULL, postfix, name, key, sizeof(key));
  68                 err = bcm47xx_nvram_getenv(key, buf, len);
  69         }
  70         return err;
  71 }
  72
  73 #define NVRAM_READ_VAL(type)                                            \
  74 static void nvram_read_ ## type (const char *prefix,                    \
  75                                  const char *postfix, const char *name, \
  76                                  type *val, type allset, bool fallback) \
  77 {                                                                       \
  78         char buf[100];                                                  \
  79         int err;                                                        \
  80         type var;                                                       \
  81                                                                         \
  82         err = get_nvram_var(prefix, postfix, name, buf, sizeof(buf),    \
  83                             fallback);                                  \
  84         if (err < 0)                                                    \
  85                 return;                                                 \
  86         err = kstrto ## type(strim(buf), 0, &var);                      \
  87         if (err) {                                                      \
  88                 pr_warn("can not parse nvram name %s%s%s with value %s got %i\n",       \
  89                         prefix, name, postfix, buf, err);               \
  90                 return;                                                 \
  91         }                                                               \
  92         if (allset && var == allset)                                    \
  93                 return;                                                 \
  94         *val = var;                                                     \
  95 }
  96
  97 NVRAM_READ_VAL(u8)
  98 NVRAM_READ_VAL(s8)
  99 NVRAM_READ_VAL(u16)
 100 NVRAM_READ_VAL(u32)
 101
 102 #undef NVRAM_READ_VAL
 103
 104 static void nvram_read_u32_2(const char *prefix, const char *name,
 105                              u16 *val_lo, u16 *val_hi, bool fallback)
 106 {
 107         char buf[100];
 108         int err;
 109         u32 val;
 110
 111         err = get_nvram_var(prefix, NULL, name, buf, sizeof(buf), fallback);
 112         if (err < 0)
 113                 return;
 114         err = kstrtou32(strim(buf), 0, &val);
 115         if (err) {
 116                 pr_warn("can not parse nvram name %s%s with value %s got %i\n",
 117                         prefix, name, buf, err);
 118                 return;
 119         }
 120         *val_lo = (val & 0x0000FFFFU);
 121         *val_hi = (val & 0xFFFF0000U) >> 16;
 122 }
 123
 124 static void nvram_read_leddc(const char *prefix, const char *name,
 125                              u8 *leddc_on_time, u8 *leddc_off_time,
 126                              bool fallback)
 127 {
 128         char buf[100];
 129         int err;
 130         u32 val;
 131
 132         err = get_nvram_var(prefix, NULL, name, buf, sizeof(buf), fallback);
 133         if (err < 0)
 134                 return;
 135         err = kstrtou32(strim(buf), 0, &val);
 136         if (err) {
 137                 pr_warn("can not parse nvram name %s%s with value %s got %i\n",
 138                         prefix, name, buf, err);
 139                 return;
 140         }
 141
 142         if (val == 0xffff || val == 0xffffffff)
 143                 return;
 144
 145         *leddc_on_time = val & 0xff;
 146         *leddc_off_time = (val >> 16) & 0xff;
 147 }
 148
 149 static void bcm47xx_nvram_parse_macaddr(char *buf, u8 macaddr[6])
 150 {
 151         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 if (strchr(buf, '-'))
 156                 sscanf(buf, "%hhx-%hhx-%hhx-%hhx-%hhx-%hhx", &macaddr[0],
 157                         &macaddr[1], &macaddr[2], &macaddr[3], &macaddr[4],
 158                         &macaddr[5]);
 159         else
 160                 pr_warn("Can not parse mac address: %s\n", buf);
 161 }
 162
 163 static void nvram_read_macaddr(const char *prefix, const char *name,
 164                                u8 val[6], bool fallback)
 165 {
 166         char buf[100];
 167         int err;
 168
 169         err = get_nvram_var(prefix, NULL, name, buf, sizeof(buf), fallback);
 170         if (err < 0)
 171                 return;
 172
 173         bcm47xx_nvram_parse_macaddr(buf, val);
 174 }
 175
 176 static void nvram_read_alpha2(const char *prefix, const char *name,
 177                              char val[2], bool fallback)
 178 {
 179         char buf[10];
 180         int err;
 181
 182         err = get_nvram_var(prefix, NULL, name, buf, sizeof(buf), fallback);
 183         if (err < 0)
 184                 return;
 185         if (buf[0] == '0')
 186                 return;
 187         if (strlen(buf) > 2) {
 188                 pr_warn("alpha2 is too long %s\n", buf);
 189                 return;
 190         }
 191         memcpy(val, buf, 2);
 192 }
 193
 194 /* This is one-function-only macro, it uses local "sprom" variable! */
 195 #define ENTRY(_revmask, _type, _prefix, _name, _val, _allset, _fallback) \
 196         if (_revmask & BIT(sprom->revision)) \
 197                 nvram_read_ ## _type(_prefix, NULL, _name, &sprom->_val, \
 198                                      _allset, _fallback)
 199 /*
 200  * Special version of filling function that can be safely called for any SPROM
 201  * revision. For every NVRAM to SPROM mapping it contains bitmask of revisions
 202  * for which the mapping is valid.
 203  * It obviously requires some hexadecimal/bitmasks knowledge, but allows
 204  * writing cleaner code (easy revisions handling).
 205  * Note that while SPROM revision 0 was never used, we still keep BIT(0)
 206  * reserved for it, just to keep numbering sane.
 207  */
 208 static void bcm47xx_sprom_fill_auto(struct ssb_sprom *sprom,
 209                                     const char *prefix, bool fallback)
 210 {
 211         const char *pre = prefix;
 212         bool fb = fallback;
 213
 214         ENTRY(0xfffffffe, u16, pre, "boardrev", board_rev, 0, true);
 215         ENTRY(0xfffffffe, u32, pre, "boardflags", boardflags, 0, fb);
 216         ENTRY(0xfffffff0, u32, pre, "boardflags2", boardflags2, 0, fb);
 217         ENTRY(0xfffff800, u32, pre, "boardflags3", boardflags3, 0, fb);
 218         ENTRY(0x00000002, u16, pre, "boardflags", boardflags_lo, 0, fb);
 219         ENTRY(0xfffffffc, u16, pre, "boardtype", board_type, 0, true);
 220         ENTRY(0xfffffffe, u16, pre, "boardnum", board_num, 0, fb);
 221         ENTRY(0x00000002, u8, pre, "cc", country_code, 0, fb);
 222         ENTRY(0xfffffff8, u8, pre, "regrev", regrev, 0, fb);
 223
 224         ENTRY(0xfffffffe, u8, pre, "ledbh0", gpio0, 0xff, fb);
 225         ENTRY(0xfffffffe, u8, pre, "ledbh1", gpio1, 0xff, fb);
 226         ENTRY(0xfffffffe, u8, pre, "ledbh2", gpio2, 0xff, fb);
 227         ENTRY(0xfffffffe, u8, pre, "ledbh3", gpio3, 0xff, fb);
 228
 229         ENTRY(0x0000070e, u16, pre, "pa0b0", pa0b0, 0, fb);
 230         ENTRY(0x0000070e, u16, pre, "pa0b1", pa0b1, 0, fb);
 231         ENTRY(0x0000070e, u16, pre, "pa0b2", pa0b2, 0, fb);
 232         ENTRY(0x0000070e, u8, pre, "pa0itssit", itssi_bg, 0, fb);
 233         ENTRY(0x0000070e, u8, pre, "pa0maxpwr", maxpwr_bg, 0, fb);
 234
 235         ENTRY(0x0000070c, u8, pre, "opo", opo, 0, fb);
 236         ENTRY(0xfffffffe, u8, pre, "aa2g", ant_available_bg, 0, fb);
 237         ENTRY(0xfffffffe, u8, pre, "aa5g", ant_available_a, 0, fb);
 238         ENTRY(0x000007fe, s8, pre, "ag0", antenna_gain.a0, 0, fb);
 239         ENTRY(0x000007fe, s8, pre, "ag1", antenna_gain.a1, 0, fb);
 240         ENTRY(0x000007f0, s8, pre, "ag2", antenna_gain.a2, 0, fb);
 241         ENTRY(0x000007f0, s8, pre, "ag3", antenna_gain.a3, 0, fb);
 242
 243         ENTRY(0x0000070e, u16, pre, "pa1b0", pa1b0, 0, fb);
 244         ENTRY(0x0000070e, u16, pre, "pa1b1", pa1b1, 0, fb);
 245         ENTRY(0x0000070e, u16, pre, "pa1b2", pa1b2, 0, fb);
 246         ENTRY(0x0000070c, u16, pre, "pa1lob0", pa1lob0, 0, fb);
 247         ENTRY(0x0000070c, u16, pre, "pa1lob1", pa1lob1, 0, fb);
 248         ENTRY(0x0000070c, u16, pre, "pa1lob2", pa1lob2, 0, fb);
 249         ENTRY(0x0000070c, u16, pre, "pa1hib0", pa1hib0, 0, fb);
 250         ENTRY(0x0000070c, u16, pre, "pa1hib1", pa1hib1, 0, fb);
 251         ENTRY(0x0000070c, u16, pre, "pa1hib2", pa1hib2, 0, fb);
 252         ENTRY(0x0000070e, u8, pre, "pa1itssit", itssi_a, 0, fb);
 253         ENTRY(0x0000070e, u8, pre, "pa1maxpwr", maxpwr_a, 0, fb);
 254         ENTRY(0x0000070c, u8, pre, "pa1lomaxpwr", maxpwr_al, 0, fb);
 255         ENTRY(0x0000070c, u8, pre, "pa1himaxpwr", maxpwr_ah, 0, fb);
 256
 257         ENTRY(0x00000708, u8, pre, "bxa2g", bxa2g, 0, fb);
 258         ENTRY(0x00000708, u8, pre, "rssisav2g", rssisav2g, 0, fb);
 259         ENTRY(0x00000708, u8, pre, "rssismc2g", rssismc2g, 0, fb);
 260         ENTRY(0x00000708, u8, pre, "rssismf2g", rssismf2g, 0, fb);
 261         ENTRY(0x00000708, u8, pre, "bxa5g", bxa5g, 0, fb);
 262         ENTRY(0x00000708, u8, pre, "rssisav5g", rssisav5g, 0, fb);
 263         ENTRY(0x00000708, u8, pre, "rssismc5g", rssismc5g, 0, fb);
 264         ENTRY(0x00000708, u8, pre, "rssismf5g", rssismf5g, 0, fb);
 265         ENTRY(0x00000708, u8, pre, "tri2g", tri2g, 0, fb);
 266         ENTRY(0x00000708, u8, pre, "tri5g", tri5g, 0, fb);
 267         ENTRY(0x00000708, u8, pre, "tri5gl", tri5gl, 0, fb);
 268         ENTRY(0x00000708, u8, pre, "tri5gh", tri5gh, 0, fb);
 269         ENTRY(0x00000708, s8, pre, "rxpo2g", rxpo2g, 0, fb);
 270         ENTRY(0x00000708, s8, pre, "rxpo5g", rxpo5g, 0, fb);
 271         ENTRY(0xfffffff0, u8, pre, "txchain", txchain, 0xf, fb);
 272         ENTRY(0xfffffff0, u8, pre, "rxchain", rxchain, 0xf, fb);
 273         ENTRY(0xfffffff0, u8, pre, "antswitch", antswitch, 0xff, fb);
 274         ENTRY(0x00000700, u8, pre, "tssipos2g", fem.ghz2.tssipos, 0, fb);
 275         ENTRY(0x00000700, u8, pre, "extpagain2g", fem.ghz2.extpa_gain, 0, fb);
 276         ENTRY(0x00000700, u8, pre, "pdetrange2g", fem.ghz2.pdet_range, 0, fb);
 277         ENTRY(0x00000700, u8, pre, "triso2g", fem.ghz2.tr_iso, 0, fb);
 278         ENTRY(0x00000700, u8, pre, "antswctl2g", fem.ghz2.antswlut, 0, fb);
 279         ENTRY(0x00000700, u8, pre, "tssipos5g", fem.ghz5.tssipos, 0, fb);
 280         ENTRY(0x00000700, u8, pre, "extpagain5g", fem.ghz5.extpa_gain, 0, fb);
 281         ENTRY(0x00000700, u8, pre, "pdetrange5g", fem.ghz5.pdet_range, 0, fb);
 282         ENTRY(0x00000700, u8, pre, "triso5g", fem.ghz5.tr_iso, 0, fb);
 283         ENTRY(0x00000700, u8, pre, "antswctl5g", fem.ghz5.antswlut, 0, fb);
 284         ENTRY(0x000000f0, u8, pre, "txpid2ga0", txpid2g[0], 0, fb);
 285         ENTRY(0x000000f0, u8, pre, "txpid2ga1", txpid2g[1], 0, fb);
 286         ENTRY(0x000000f0, u8, pre, "txpid2ga2", txpid2g[2], 0, fb);
 287         ENTRY(0x000000f0, u8, pre, "txpid2ga3", txpid2g[3], 0, fb);
 288         ENTRY(0x000000f0, u8, pre, "txpid5ga0", txpid5g[0], 0, fb);
 289         ENTRY(0x000000f0, u8, pre, "txpid5ga1", txpid5g[1], 0, fb);
 290         ENTRY(0x000000f0, u8, pre, "txpid5ga2", txpid5g[2], 0, fb);
 291         ENTRY(0x000000f0, u8, pre, "txpid5ga3", txpid5g[3], 0, fb);
 292         ENTRY(0x000000f0, u8, pre, "txpid5gla0", txpid5gl[0], 0, fb);
 293         ENTRY(0x000000f0, u8, pre, "txpid5gla1", txpid5gl[1], 0, fb);
 294         ENTRY(0x000000f0, u8, pre, "txpid5gla2", txpid5gl[2], 0, fb);
 295         ENTRY(0x000000f0, u8, pre, "txpid5gla3", txpid5gl[3], 0, fb);
 296         ENTRY(0x000000f0, u8, pre, "txpid5gha0", txpid5gh[0], 0, fb);
 297         ENTRY(0x000000f0, u8, pre, "txpid5gha1", txpid5gh[1], 0, fb);
 298         ENTRY(0x000000f0, u8, pre, "txpid5gha2", txpid5gh[2], 0, fb);
 299         ENTRY(0x000000f0, u8, pre, "txpid5gha3", txpid5gh[3], 0, fb);
 300
 301         ENTRY(0xffffff00, u8, pre, "tempthresh", tempthresh, 0, fb);
 302         ENTRY(0xffffff00, u8, pre, "tempoffset", tempoffset, 0, fb);
 303         ENTRY(0xffffff00, u16, pre, "rawtempsense", rawtempsense, 0, fb);
 304         ENTRY(0xffffff00, u8, pre, "measpower", measpower, 0, fb);
 305         ENTRY(0xffffff00, u8, pre, "tempsense_slope", tempsense_slope, 0, fb);
 306         ENTRY(0xffffff00, u8, pre, "tempcorrx", tempcorrx, 0, fb);
 307         ENTRY(0xffffff00, u8, pre, "tempsense_option", tempsense_option, 0, fb);
 308         ENTRY(0x00000700, u8, pre, "freqoffset_corr", freqoffset_corr, 0, fb);
 309         ENTRY(0x00000700, u8, pre, "iqcal_swp_dis", iqcal_swp_dis, 0, fb);
 310         ENTRY(0x00000700, u8, pre, "hw_iqcal_en", hw_iqcal_en, 0, fb);
 311         ENTRY(0x00000700, u8, pre, "elna2g", elna2g, 0, fb);
 312         ENTRY(0x00000700, u8, pre, "elna5g", elna5g, 0, fb);
 313         ENTRY(0xffffff00, u8, pre, "phycal_tempdelta", phycal_tempdelta, 0, fb);
 314         ENTRY(0xffffff00, u8, pre, "temps_period", temps_period, 0, fb);
 315         ENTRY(0xffffff00, u8, pre, "temps_hysteresis", temps_hysteresis, 0, fb);
 316         ENTRY(0xffffff00, u8, pre, "measpower1", measpower1, 0, fb);
 317         ENTRY(0xffffff00, u8, pre, "measpower2", measpower2, 0, fb);
 318
 319         ENTRY(0x000001f0, u16, pre, "cck2gpo", cck2gpo, 0, fb);
 320         ENTRY(0x000001f0, u32, pre, "ofdm2gpo", ofdm2gpo, 0, fb);
 321         ENTRY(0x000001f0, u32, pre, "ofdm5gpo", ofdm5gpo, 0, fb);
 322         ENTRY(0x000001f0, u32, pre, "ofdm5glpo", ofdm5glpo, 0, fb);
 323         ENTRY(0x000001f0, u32, pre, "ofdm5ghpo", ofdm5ghpo, 0, fb);
 324         ENTRY(0x000001f0, u16, pre, "mcs2gpo0", mcs2gpo[0], 0, fb);
 325         ENTRY(0x000001f0, u16, pre, "mcs2gpo1", mcs2gpo[1], 0, fb);
 326         ENTRY(0x000001f0, u16, pre, "mcs2gpo2", mcs2gpo[2], 0, fb);
 327         ENTRY(0x000001f0, u16, pre, "mcs2gpo3", mcs2gpo[3], 0, fb);
 328         ENTRY(0x000001f0, u16, pre, "mcs2gpo4", mcs2gpo[4], 0, fb);
 329         ENTRY(0x000001f0, u16, pre, "mcs2gpo5", mcs2gpo[5], 0, fb);
 330         ENTRY(0x000001f0, u16, pre, "mcs2gpo6", mcs2gpo[6], 0, fb);
 331         ENTRY(0x000001f0, u16, pre, "mcs2gpo7", mcs2gpo[7], 0, fb);
 332         ENTRY(0x000001f0, u16, pre, "mcs5gpo0", mcs5gpo[0], 0, fb);
 333         ENTRY(0x000001f0, u16, pre, "mcs5gpo1", mcs5gpo[1], 0, fb);
 334         ENTRY(0x000001f0, u16, pre, "mcs5gpo2", mcs5gpo[2], 0, fb);
 335         ENTRY(0x000001f0, u16, pre, "mcs5gpo3", mcs5gpo[3], 0, fb);
 336         ENTRY(0x000001f0, u16, pre, "mcs5gpo4", mcs5gpo[4], 0, fb);
 337         ENTRY(0x000001f0, u16, pre, "mcs5gpo5", mcs5gpo[5], 0, fb);
 338         ENTRY(0x000001f0, u16, pre, "mcs5gpo6", mcs5gpo[6], 0, fb);
 339         ENTRY(0x000001f0, u16, pre, "mcs5gpo7", mcs5gpo[7], 0, fb);
 340         ENTRY(0x000001f0, u16, pre, "mcs5glpo0", mcs5glpo[0], 0, fb);
 341         ENTRY(0x000001f0, u16, pre, "mcs5glpo1", mcs5glpo[1], 0, fb);
 342         ENTRY(0x000001f0, u16, pre, "mcs5glpo2", mcs5glpo[2], 0, fb);
 343         ENTRY(0x000001f0, u16, pre, "mcs5glpo3", mcs5glpo[3], 0, fb);
 344         ENTRY(0x000001f0, u16, pre, "mcs5glpo4", mcs5glpo[4], 0, fb);
 345         ENTRY(0x000001f0, u16, pre, "mcs5glpo5", mcs5glpo[5], 0, fb);
 346         ENTRY(0x000001f0, u16, pre, "mcs5glpo6", mcs5glpo[6], 0, fb);
 347         ENTRY(0x000001f0, u16, pre, "mcs5glpo7", mcs5glpo[7], 0, fb);
 348         ENTRY(0x000001f0, u16, pre, "mcs5ghpo0", mcs5ghpo[0], 0, fb);
 349         ENTRY(0x000001f0, u16, pre, "mcs5ghpo1", mcs5ghpo[1], 0, fb);
 350         ENTRY(0x000001f0, u16, pre, "mcs5ghpo2", mcs5ghpo[2], 0, fb);
 351         ENTRY(0x000001f0, u16, pre, "mcs5ghpo3", mcs5ghpo[3], 0, fb);
 352         ENTRY(0x000001f0, u16, pre, "mcs5ghpo4", mcs5ghpo[4], 0, fb);
 353         ENTRY(0x000001f0, u16, pre, "mcs5ghpo5", mcs5ghpo[5], 0, fb);
 354         ENTRY(0x000001f0, u16, pre, "mcs5ghpo6", mcs5ghpo[6], 0, fb);
 355         ENTRY(0x000001f0, u16, pre, "mcs5ghpo7", mcs5ghpo[7], 0, fb);
 356         ENTRY(0x000001f0, u16, pre, "cddpo", cddpo, 0, fb);
 357         ENTRY(0x000001f0, u16, pre, "stbcpo", stbcpo, 0, fb);
 358         ENTRY(0x000001f0, u16, pre, "bw40po", bw40po, 0, fb);
 359         ENTRY(0x000001f0, u16, pre, "bwduppo", bwduppo, 0, fb);
 360
 361         ENTRY(0xfffffe00, u16, pre, "cckbw202gpo", cckbw202gpo, 0, fb);
 362         ENTRY(0xfffffe00, u16, pre, "cckbw20ul2gpo", cckbw20ul2gpo, 0, fb);
 363         ENTRY(0x00000600, u32, pre, "legofdmbw202gpo", legofdmbw202gpo, 0, fb);
 364         ENTRY(0x00000600, u32, pre, "legofdmbw20ul2gpo", legofdmbw20ul2gpo, 0, fb);
 365         ENTRY(0x00000600, u32, pre, "legofdmbw205glpo", legofdmbw205glpo, 0, fb);
 366         ENTRY(0x00000600, u32, pre, "legofdmbw20ul5glpo", legofdmbw20ul5glpo, 0, fb);
 367         ENTRY(0x00000600, u32, pre, "legofdmbw205gmpo", legofdmbw205gmpo, 0, fb);
 368         ENTRY(0x00000600, u32, pre, "legofdmbw20ul5gmpo", legofdmbw20ul5gmpo, 0, fb);
 369         ENTRY(0x00000600, u32, pre, "legofdmbw205ghpo", legofdmbw205ghpo, 0, fb);
 370         ENTRY(0x00000600, u32, pre, "legofdmbw20ul5ghpo", legofdmbw20ul5ghpo, 0, fb);
 371         ENTRY(0xfffffe00, u32, pre, "mcsbw202gpo", mcsbw202gpo, 0, fb);
 372         ENTRY(0x00000600, u32, pre, "mcsbw20ul2gpo", mcsbw20ul2gpo, 0, fb);
 373         ENTRY(0xfffffe00, u32, pre, "mcsbw402gpo", mcsbw402gpo, 0, fb);
 374         ENTRY(0xfffffe00, u32, pre, "mcsbw205glpo", mcsbw205glpo, 0, fb);
 375         ENTRY(0x00000600, u32, pre, "mcsbw20ul5glpo", mcsbw20ul5glpo, 0, fb);
 376         ENTRY(0xfffffe00, u32, pre, "mcsbw405glpo", mcsbw405glpo, 0, fb);
 377         ENTRY(0xfffffe00, u32, pre, "mcsbw205gmpo", mcsbw205gmpo, 0, fb);
 378         ENTRY(0x00000600, u32, pre, "mcsbw20ul5gmpo", mcsbw20ul5gmpo, 0, fb);
 379         ENTRY(0xfffffe00, u32, pre, "mcsbw405gmpo", mcsbw405gmpo, 0, fb);
 380         ENTRY(0xfffffe00, u32, pre, "mcsbw205ghpo", mcsbw205ghpo, 0, fb);
 381         ENTRY(0x00000600, u32, pre, "mcsbw20ul5ghpo", mcsbw20ul5ghpo, 0, fb);
 382         ENTRY(0xfffffe00, u32, pre, "mcsbw405ghpo", mcsbw405ghpo, 0, fb);
 383         ENTRY(0x00000600, u16, pre, "mcs32po", mcs32po, 0, fb);
 384         ENTRY(0x00000600, u16, pre, "legofdm40duppo", legofdm40duppo, 0, fb);
 385         ENTRY(0x00000700, u8, pre, "pcieingress_war", pcieingress_war, 0, fb);
 386
 387         /* TODO: rev 11 support */
 388         ENTRY(0x00000700, u8, pre, "rxgainerr2ga0", rxgainerr2ga[0], 0, fb);
 389         ENTRY(0x00000700, u8, pre, "rxgainerr2ga1", rxgainerr2ga[1], 0, fb);
 390         ENTRY(0x00000700, u8, pre, "rxgainerr2ga2", rxgainerr2ga[2], 0, fb);
 391         ENTRY(0x00000700, u8, pre, "rxgainerr5gla0", rxgainerr5gla[0], 0, fb);
 392         ENTRY(0x00000700, u8, pre, "rxgainerr5gla1", rxgainerr5gla[1], 0, fb);
 393         ENTRY(0x00000700, u8, pre, "rxgainerr5gla2", rxgainerr5gla[2], 0, fb);
 394         ENTRY(0x00000700, u8, pre, "rxgainerr5gma0", rxgainerr5gma[0], 0, fb);
 395         ENTRY(0x00000700, u8, pre, "rxgainerr5gma1", rxgainerr5gma[1], 0, fb);
 396         ENTRY(0x00000700, u8, pre, "rxgainerr5gma2", rxgainerr5gma[2], 0, fb);
 397         ENTRY(0x00000700, u8, pre, "rxgainerr5gha0", rxgainerr5gha[0], 0, fb);
 398         ENTRY(0x00000700, u8, pre, "rxgainerr5gha1", rxgainerr5gha[1], 0, fb);
 399         ENTRY(0x00000700, u8, pre, "rxgainerr5gha2", rxgainerr5gha[2], 0, fb);
 400         ENTRY(0x00000700, u8, pre, "rxgainerr5gua0", rxgainerr5gua[0], 0, fb);
 401         ENTRY(0x00000700, u8, pre, "rxgainerr5gua1", rxgainerr5gua[1], 0, fb);
 402         ENTRY(0x00000700, u8, pre, "rxgainerr5gua2", rxgainerr5gua[2], 0, fb);
 403
 404         ENTRY(0xfffffe00, u8, pre, "sar2g", sar2g, 0, fb);
 405         ENTRY(0xfffffe00, u8, pre, "sar5g", sar5g, 0, fb);
 406
 407         /* TODO: rev 11 support */
 408         ENTRY(0x00000700, u8, pre, "noiselvl2ga0", noiselvl2ga[0], 0, fb);
 409         ENTRY(0x00000700, u8, pre, "noiselvl2ga1", noiselvl2ga[1], 0, fb);
 410         ENTRY(0x00000700, u8, pre, "noiselvl2ga2", noiselvl2ga[2], 0, fb);
 411         ENTRY(0x00000700, u8, pre, "noiselvl5gla0", noiselvl5gla[0], 0, fb);
 412         ENTRY(0x00000700, u8, pre, "noiselvl5gla1", noiselvl5gla[1], 0, fb);
 413         ENTRY(0x00000700, u8, pre, "noiselvl5gla2", noiselvl5gla[2], 0, fb);
 414         ENTRY(0x00000700, u8, pre, "noiselvl5gma0", noiselvl5gma[0], 0, fb);
 415         ENTRY(0x00000700, u8, pre, "noiselvl5gma1", noiselvl5gma[1], 0, fb);
 416         ENTRY(0x00000700, u8, pre, "noiselvl5gma2", noiselvl5gma[2], 0, fb);
 417         ENTRY(0x00000700, u8, pre, "noiselvl5gha0", noiselvl5gha[0], 0, fb);
 418         ENTRY(0x00000700, u8, pre, "noiselvl5gha1", noiselvl5gha[1], 0, fb);
 419         ENTRY(0x00000700, u8, pre, "noiselvl5gha2", noiselvl5gha[2], 0, fb);
 420         ENTRY(0x00000700, u8, pre, "noiselvl5gua0", noiselvl5gua[0], 0, fb);
 421         ENTRY(0x00000700, u8, pre, "noiselvl5gua1", noiselvl5gua[1], 0, fb);
 422         ENTRY(0x00000700, u8, pre, "noiselvl5gua2", noiselvl5gua[2], 0, fb);
 423 }
 424 #undef ENTRY /* It's specififc, uses local variable, don't use it (again). */
 425
 426 static void bcm47xx_fill_sprom_r1234589(struct ssb_sprom *sprom,
 427                                         const char *prefix, bool fallback)
 428 {
 429         nvram_read_u16(prefix, NULL, "devid", &sprom->dev_id, 0, fallback);
 430         nvram_read_alpha2(prefix, "ccode", sprom->alpha2, fallback);
 431 }
 432
 433 static void bcm47xx_fill_sprom_r3(struct ssb_sprom *sprom, const char *prefix,
 434                                   bool fallback)
 435 {
 436         nvram_read_leddc(prefix, "leddc", &sprom->leddc_on_time,
 437                          &sprom->leddc_off_time, fallback);
 438 }
 439
 440 static void bcm47xx_fill_sprom_r4589(struct ssb_sprom *sprom,
 441                                      const char *prefix, bool fallback)
 442 {
 443         nvram_read_leddc(prefix, "leddc", &sprom->leddc_on_time,
 444                          &sprom->leddc_off_time, fallback);
 445 }
 446
 447 static void bcm47xx_fill_sprom_path_r4589(struct ssb_sprom *sprom,
 448                                           const char *prefix, bool fallback)
 449 {
 450         char postfix[2];
 451         int i;
 452
 453         for (i = 0; i < ARRAY_SIZE(sprom->core_pwr_info); i++) {
 454                 struct ssb_sprom_core_pwr_info *pwr_info = &sprom->core_pwr_info[i];
 455                 snprintf(postfix, sizeof(postfix), "%i", i);
 456                 nvram_read_u8(prefix, postfix, "maxp2ga",
 457                               &pwr_info->maxpwr_2g, 0, fallback);
 458                 nvram_read_u8(prefix, postfix, "itt2ga",
 459                               &pwr_info->itssi_2g, 0, fallback);
 460                 nvram_read_u8(prefix, postfix, "itt5ga",
 461                               &pwr_info->itssi_5g, 0, fallback);
 462                 nvram_read_u16(prefix, postfix, "pa2gw0a",
 463                                &pwr_info->pa_2g[0], 0, fallback);
 464                 nvram_read_u16(prefix, postfix, "pa2gw1a",
 465                                &pwr_info->pa_2g[1], 0, fallback);
 466                 nvram_read_u16(prefix, postfix, "pa2gw2a",
 467                                &pwr_info->pa_2g[2], 0, fallback);
 468                 nvram_read_u8(prefix, postfix, "maxp5ga",
 469                               &pwr_info->maxpwr_5g, 0, fallback);
 470                 nvram_read_u8(prefix, postfix, "maxp5gha",
 471                               &pwr_info->maxpwr_5gh, 0, fallback);
 472                 nvram_read_u8(prefix, postfix, "maxp5gla",
 473                               &pwr_info->maxpwr_5gl, 0, fallback);
 474                 nvram_read_u16(prefix, postfix, "pa5gw0a",
 475                                &pwr_info->pa_5g[0], 0, fallback);
 476                 nvram_read_u16(prefix, postfix, "pa5gw1a",
 477                                &pwr_info->pa_5g[1], 0, fallback);
 478                 nvram_read_u16(prefix, postfix, "pa5gw2a",
 479                                &pwr_info->pa_5g[2], 0, fallback);
 480                 nvram_read_u16(prefix, postfix, "pa5glw0a",
 481                                &pwr_info->pa_5gl[0], 0, fallback);
 482                 nvram_read_u16(prefix, postfix, "pa5glw1a",
 483                                &pwr_info->pa_5gl[1], 0, fallback);
 484                 nvram_read_u16(prefix, postfix, "pa5glw2a",
 485                                &pwr_info->pa_5gl[2], 0, fallback);
 486                 nvram_read_u16(prefix, postfix, "pa5ghw0a",
 487                                &pwr_info->pa_5gh[0], 0, fallback);
 488                 nvram_read_u16(prefix, postfix, "pa5ghw1a",
 489                                &pwr_info->pa_5gh[1], 0, fallback);
 490                 nvram_read_u16(prefix, postfix, "pa5ghw2a",
 491                                &pwr_info->pa_5gh[2], 0, fallback);
 492         }
 493 }
 494
 495 static void bcm47xx_fill_sprom_path_r45(struct ssb_sprom *sprom,
 496                                         const char *prefix, bool fallback)
 497 {
 498         char postfix[2];
 499         int i;
 500
 501         for (i = 0; i < ARRAY_SIZE(sprom->core_pwr_info); i++) {
 502                 struct ssb_sprom_core_pwr_info *pwr_info = &sprom->core_pwr_info[i];
 503                 snprintf(postfix, sizeof(postfix), "%i", i);
 504                 nvram_read_u16(prefix, postfix, "pa2gw3a",
 505                                &pwr_info->pa_2g[3], 0, fallback);
 506                 nvram_read_u16(prefix, postfix, "pa5gw3a",
 507                                &pwr_info->pa_5g[3], 0, fallback);
 508                 nvram_read_u16(prefix, postfix, "pa5glw3a",
 509                                &pwr_info->pa_5gl[3], 0, fallback);
 510                 nvram_read_u16(prefix, postfix, "pa5ghw3a",
 511                                &pwr_info->pa_5gh[3], 0, fallback);
 512         }
 513 }
 514
 515 static bool bcm47xx_is_valid_mac(u8 *mac)
 516 {
 517         return mac && !(mac[0] == 0x00 && mac[1] == 0x90 && mac[2] == 0x4c);
 518 }
 519
 520 static int bcm47xx_increase_mac_addr(u8 *mac, u8 num)
 521 {
 522         u8 *oui = mac + ETH_ALEN/2 - 1;
 523         u8 *p = mac + ETH_ALEN - 1;
 524
 525         do {
 526                 (*p) += num;
 527                 if (*p > num)
 528                         break;
 529                 p--;
 530                 num = 1;
 531         } while (p != oui);
 532
 533         if (p == oui) {
 534                 pr_err("unable to fetch mac address\n");
 535                 return -ENOENT;
 536         }
 537         return 0;
 538 }
 539
 540 static int mac_addr_used = 2;
 541
 542 static void bcm47xx_fill_sprom_ethernet(struct ssb_sprom *sprom,
 543                                         const char *prefix, bool fallback)
 544 {
 545         bool fb = fallback;
 546
 547         nvram_read_macaddr(prefix, "et0macaddr", sprom->et0mac, fallback);
 548         nvram_read_u8(prefix, NULL, "et0mdcport", &sprom->et0mdcport, 0,
 549                       fallback);
 550         nvram_read_u8(prefix, NULL, "et0phyaddr", &sprom->et0phyaddr, 0,
 551                       fallback);
 552
 553         nvram_read_macaddr(prefix, "et1macaddr", sprom->et1mac, fallback);
 554         nvram_read_u8(prefix, NULL, "et1mdcport", &sprom->et1mdcport, 0,
 555                       fallback);
 556         nvram_read_u8(prefix, NULL, "et1phyaddr", &sprom->et1phyaddr, 0,
 557                       fallback);
 558
 559         nvram_read_macaddr(prefix, "et2macaddr", sprom->et2mac, fb);
 560         nvram_read_u8(prefix, NULL, "et2mdcport", &sprom->et2mdcport, 0, fb);
 561         nvram_read_u8(prefix, NULL, "et2phyaddr", &sprom->et2phyaddr, 0, fb);
 562
 563         nvram_read_macaddr(prefix, "macaddr", sprom->il0mac, fallback);
 564         nvram_read_macaddr(prefix, "il0macaddr", sprom->il0mac, fallback);
 565
 566         /* The address prefix 00:90:4C is used by Broadcom in their initial
 567            configuration. When a mac address with the prefix 00:90:4C is used
 568            all devices from the same series are sharing the same mac address.
 569            To prevent mac address collisions we replace them with a mac address
 570            based on the base address. */
 571         if (!bcm47xx_is_valid_mac(sprom->il0mac)) {
 572                 u8 mac[6];
 573
 574                 nvram_read_macaddr(NULL, "et0macaddr", mac, false);
 575                 if (bcm47xx_is_valid_mac(mac)) {
 576                         int err = bcm47xx_increase_mac_addr(mac, mac_addr_used);
 577
 578                         if (!err) {
 579                                 ether_addr_copy(sprom->il0mac, mac);
 580                                 mac_addr_used++;
 581                         }
 582                 }
 583         }
 584 }
 585
 586 static void bcm47xx_fill_board_data(struct ssb_sprom *sprom, const char *prefix,
 587                                     bool fallback)
 588 {
 589         nvram_read_u32_2(prefix, "boardflags", &sprom->boardflags_lo,
 590                          &sprom->boardflags_hi, fallback);
 591         nvram_read_u32_2(prefix, "boardflags2", &sprom->boardflags2_lo,
 592                          &sprom->boardflags2_hi, fallback);
 593 }
 594
 595 void bcm47xx_fill_sprom(struct ssb_sprom *sprom, const char *prefix,
 596                         bool fallback)
 597 {
 598         bcm47xx_fill_sprom_ethernet(sprom, prefix, fallback);
 599         bcm47xx_fill_board_data(sprom, prefix, fallback);
 600
 601         nvram_read_u8(prefix, NULL, "sromrev", &sprom->revision, 0, fallback);
 602
 603         switch (sprom->revision) {
 604         case 1:
 605                 bcm47xx_fill_sprom_r1234589(sprom, prefix, fallback);
 606                 break;
 607         case 2:
 608                 bcm47xx_fill_sprom_r1234589(sprom, prefix, fallback);
 609                 break;
 610         case 3:
 611                 bcm47xx_fill_sprom_r1234589(sprom, prefix, fallback);
 612                 bcm47xx_fill_sprom_r3(sprom, prefix, fallback);
 613                 break;
 614         case 4:
 615         case 5:
 616                 bcm47xx_fill_sprom_r1234589(sprom, prefix, fallback);
 617                 bcm47xx_fill_sprom_r4589(sprom, prefix, fallback);
 618                 bcm47xx_fill_sprom_path_r4589(sprom, prefix, fallback);
 619                 bcm47xx_fill_sprom_path_r45(sprom, prefix, fallback);
 620                 break;
 621         case 8:
 622                 bcm47xx_fill_sprom_r1234589(sprom, prefix, fallback);
 623                 bcm47xx_fill_sprom_r4589(sprom, prefix, fallback);
 624                 bcm47xx_fill_sprom_path_r4589(sprom, prefix, fallback);
 625                 break;
 626         case 9:
 627                 bcm47xx_fill_sprom_r1234589(sprom, prefix, fallback);
 628                 bcm47xx_fill_sprom_r4589(sprom, prefix, fallback);
 629                 bcm47xx_fill_sprom_path_r4589(sprom, prefix, fallback);
 630                 break;
 631         default:
 632                 pr_warn("Unsupported SPROM revision %d detected. Will extract v1\n",
 633                         sprom->revision);
 634                 sprom->revision = 1;
 635                 bcm47xx_fill_sprom_r1234589(sprom, prefix, fallback);
 636         }
 637
 638         bcm47xx_sprom_fill_auto(sprom, prefix, fallback);
 639 }
 640
 641 /*
 642  * Having many NVRAM entries for PCI devices led to repeating prefixes like
 643  * pci/1/1/ all the time and wasting flash space. So at some point Broadcom
 644  * decided to introduce prefixes like 0: 1: 2: etc.
 645  * If we find e.g. devpath0=pci/2/1 or devpath0=pci/2/1/ we should use 0:
 646  * instead of pci/2/1/.
 647  */
 648 static void bcm47xx_sprom_apply_prefix_alias(char *prefix, size_t prefix_size)
 649 {
 650         size_t prefix_len = strlen(prefix);
 651         size_t short_len = prefix_len - 1;
 652         char nvram_var[10];
 653         char buf[20];
 654         int i;
 655
 656         if (prefix_len <= 0 || prefix[prefix_len - 1] != '/')
 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 (!strcmp(buf, prefix) ||
 665                     (short_len && strlen(buf) == short_len && !strncmp(buf, prefix, short_len))) {
 666                         snprintf(prefix, prefix_size, "%d:", i);
 667                         return;
 668                 }
 669         }
 670 }
 671
 672 /*
 673  * This function has to be called in a very precise moment. It has to be done:
 674  * 1) After bcma registers flash cores, so we can read NVRAM.
 675  * 2) Before any code needs SPROM content.
 676  *
 677  * This can be achieved only by using bcma callback.
 678  */
 679 static int bcm47xx_sprom_init(struct bcma_bus *bus, struct ssb_sprom *out)
 680 {
 681         char prefix[20];
 682
 683         switch (bus->hosttype) {
 684         case BCMA_HOSTTYPE_PCI:
 685                 snprintf(prefix, sizeof(prefix), "pci/%u/%u/",
 686                          pci_domain_nr(bus->host_pci->bus) + 1,
 687                          bus->host_pci->bus->number);
 688                 bcm47xx_sprom_apply_prefix_alias(prefix, sizeof(prefix));
 689                 bcm47xx_fill_sprom(out, prefix, false);
 690                 break;
 691         case BCMA_HOSTTYPE_SOC:
 692                 bcm47xx_fill_sprom(out, NULL, false);
 693                 break;
 694         default:
 695                 pr_err("Unable to fill SPROM for given hosttype.\n");
 696                 return -EINVAL;
 697         }
 698
 699         return 0;
 700 };
 701
 702 static int bcm47xx_sprom_probe(struct platform_device *pdev)
 703 {
 704         return bcma_arch_register_fallback_sprom(&bcm47xx_sprom_init);
 705 }
 706
 707 static const struct of_device_id bcm47xx_sprom_of_match_table[] = {
 708         { .compatible = "brcm,bcm47xx-sprom", },
 709         {},
 710 };
 711 MODULE_DEVICE_TABLE(of, bcm47xx_sprom_of_match_table);
 712
 713 static struct platform_driver bcm47xx_sprom_driver = {
 714         .driver = {
 715                 .owner = THIS_MODULE,
 716                 .name = "bcm47xx-sprom",
 717                 .of_match_table = bcm47xx_sprom_of_match_table,
 718                 /* driver unloading/unbinding currently not supported */
 719                 .suppress_bind_attrs = true,
 720         },
 721         .probe = bcm47xx_sprom_probe,
 722 };
 723 module_platform_driver(bcm47xx_sprom_driver);
 724
 725 MODULE_AUTHOR("Hauke Mehrtens <hauke@hauke-m.de>");
 726 MODULE_LICENSE("GPL v2");