[RFC,3/7] bcm47xx-sprom: add Broadcom sprom parser driver

Message ID	1408915485-8078-5-git-send-email-hauke@hauke-m.de (mailing list archive)
State	Not Applicable, archived
Headers	show Return-Path: <linux-wireless-owner@kernel.org> From: Hauke Mehrtens <hauke@hauke-m.de> To: linux-wireless@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mips@linux-mips.org Cc: zajec5@gmail.com, Hauke Mehrtens <hauke@hauke-m.de> Subject: [RFC 3/7] bcm47xx-sprom: add Broadcom sprom parser driver Date: Sun, 24 Aug 2014 23:24:41 +0200 Message-Id: <1408915485-8078-5-git-send-email-hauke@hauke-m.de> In-Reply-To: <1408915485-8078-1-git-send-email-hauke@hauke-m.de> References: <1408915485-8078-1-git-send-email-hauke@hauke-m.de> Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk

diff --git a/Documentation/devicetree/bindings/misc/bcm47xx-sprom.txt b/Documentation/devicetree/bindings/misc/bcm47xx-sprom.txt new file mode 100644 index 0000000..eed2a4a --- /dev/null +++ b/Documentation/devicetree/bindings/misc/bcm47xx-sprom.txt @@ -0,0 +1,16 @@ +Broadcom bcm47xx/bcm53xx sprom converter + +This driver provbides an sprom based on a given nvram. + +Required properties: + +- compatible : brcm,bcm47xx-sprom + +- nvram : reference to a nvram driver, e.g. bcm47xx-nvram + +Example: + +sprom0: sprom@0 { + compatible = "brcm,bcm47xx-sprom"; + nvram = <&nvram0>; +}; diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig index b306c02..fe9e2f2 100644 --- a/drivers/misc/Kconfig +++ b/drivers/misc/Kconfig @@ -528,6 +528,20 @@ config BCM47XX_NVRAM If unsure, say N. +config BCM47XX_SPROM + tristate "BCM47XX sprom driver" + depends on OF + help + This driver parses the sprom from a given nvram which is found on + Broadcom bcm47xx and bcm53xx SoCs. + + The sprom contains board configuration data like the + calibration data fro the wifi chips, the mac addresses used + by the board and many other board configuration data. This + driver will provide the sprom to bcma. + + If unsure, say N. + source "drivers/misc/c2port/Kconfig" source "drivers/misc/eeprom/Kconfig" source "drivers/misc/cb710/Kconfig" diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile index 2331208..e958e35 100644 --- a/drivers/misc/Makefile +++ b/drivers/misc/Makefile @@ -56,3 +56,4 @@ obj-$(CONFIG_GENWQE) += genwqe/ obj-$(CONFIG_ECHO) += echo/ obj-$(CONFIG_VEXPRESS_SYSCFG) += vexpress-syscfg.o obj-$(CONFIG_BCM47XX_NVRAM) += bcm47xx-nvram.o +obj-$(CONFIG_BCM47XX_SPROM) += bcm47xx-sprom.o diff --git a/drivers/misc/bcm47xx-sprom.c b/drivers/misc/bcm47xx-sprom.c new file mode 100644 index 0000000..3221b12 --- /dev/null +++ b/drivers/misc/bcm47xx-sprom.c @@ -0,0 +1,690 @@ +/* + * BCM47xx/BCM53xx nvram variable access + * + * Copyright (C) 2005 Broadcom Corporation + * Copyright (C) 2004 Florian Schirmer <jolt@tuxbox.org> + * Copyright (C) 2006 Michael Buesch <m@bues.ch> + * Copyright (C) 2010 Waldemar Brodkorb <wbx@openadk.org> + * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org> + * Copyright (C) 2010-2014 Hauke Mehrtens <hauke@hauke-m.de> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#include <linux/types.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/string.h> +#include <linux/of_address.h> +#include <linux/device.h> +#include <linux/platform_device.h> +#include <linux/of_platform.h> +#include <linux/io.h> +#include <linux/ssb/ssb.h> +#include <linux/bcm47xx_nvram.h> +#include <linux/if_ether.h> +#include <linux/etherdevice.h> + +struct bcm47xx_sprom_fill { + const char *prefix; + bool fallback; + int (*getenv)(const struct bcm47xx_sprom_fill *fill, const char *name, + char *val, size_t val_len); + const void *priv; +}; + +static void create_key(const char *prefix, const char *postfix, + const char *name, char *buf, int len) +{ + if (prefix && postfix) + snprintf(buf, len, "%s%s%s", prefix, name, postfix); + else if (prefix) + snprintf(buf, len, "%s%s", prefix, name); + else if (postfix) + snprintf(buf, len, "%s%s", name, postfix); + else + snprintf(buf, len, "%s", name); +} + +static int get_nvram_var(const struct bcm47xx_sprom_fill *fill, + const char *postfix, const char *name, char *buf, + int len) +{ + char key[40]; + int err; + + create_key(fill->prefix, postfix, name, key, sizeof(key)); + + err = fill->getenv(fill, key, buf, len); + if (fill->fallback && err == -ENOENT && fill->prefix) { + create_key(NULL, postfix, name, key, sizeof(key)); + err = fill->getenv(fill, key, buf, len); + } + return err; +} + +#define NVRAM_READ_VAL(type) \ +static void nvram_read_ ## type (const struct bcm47xx_sprom_fill *fill, \ + const char *postfix, const char *name, \ + type *val, type allset) \ +{ \ + char buf[100]; \ + int err; \ + type var; \ + \ + err = get_nvram_var(fill, postfix, name, buf, sizeof(buf)); \ + if (err < 0) \ + return; \ + err = kstrto ## type(strim(buf), 0, &var); \ + if (err) { \ + pr_warn("can not parse nvram name %s%s%s with value %s got %i\n", \ + fill->prefix, name, postfix, buf, err); \ + return; \ + } \ + if (allset && var == allset) \ + return; \ + *val = var; \ +} + +NVRAM_READ_VAL(u8) +NVRAM_READ_VAL(s8) +NVRAM_READ_VAL(u16) +NVRAM_READ_VAL(u32) + +#undef NVRAM_READ_VAL + +static void nvram_read_u32_2(const struct bcm47xx_sprom_fill *fill, + const char *name, u16 *val_lo, u16 *val_hi) +{ + char buf[100]; + int err; + u32 val; + + err = get_nvram_var(fill, NULL, name, buf, sizeof(buf)); + if (err < 0) + return; + err = kstrtou32(strim(buf), 0, &val); + if (err) { + pr_warn("can not parse nvram name %s%s with value %s got %i\n", + fill->prefix, name, buf, err); + return; + } + *val_lo = (val & 0x0000FFFFU); + *val_hi = (val & 0xFFFF0000U) >> 16; +} + +static void nvram_read_leddc(const struct bcm47xx_sprom_fill *fill, + const char *name, u8 *leddc_on_time, + u8 *leddc_off_time) +{ + char buf[100]; + int err; + u32 val; + + err = get_nvram_var(fill, NULL, name, buf, sizeof(buf)); + if (err < 0) + return; + err = kstrtou32(strim(buf), 0, &val); + if (err) { + pr_warn("can not parse nvram name %s%s with value %s got %i\n", + fill->prefix, name, buf, err); + return; + } + + if (val == 0xffff || val == 0xffffffff) + return; + + *leddc_on_time = val & 0xff; + *leddc_off_time = (val >> 16) & 0xff; +} + +static void nvram_read_macaddr(const struct bcm47xx_sprom_fill *fill, + const char *name, u8 val[6]) +{ + char buf[100]; + int err; + + err = get_nvram_var(fill, NULL, name, buf, sizeof(buf)); + if (err < 0) + return; + + bcm47xx_nvram_parse_macaddr(buf, val); +} + +static void nvram_read_alpha2(const struct bcm47xx_sprom_fill *fill, + const char *name, char val[2]) +{ + char buf[10]; + int err; + + err = get_nvram_var(fill, NULL, name, buf, sizeof(buf)); + if (err < 0) + return; + if (buf[0] == '0') + return; + if (strlen(buf) > 2) { + pr_warn("alpha2 is too long %s\n", buf); + return; + } + memcpy(val, buf, 2); +} + +static void bcm47xx_sprom_fill_r1234589(struct ssb_sprom *sprom, + const struct bcm47xx_sprom_fill *fill) +{ + nvram_read_u16(fill, NULL, "devid", &sprom->dev_id, 0); + nvram_read_u8(fill, NULL, "ledbh0", &sprom->gpio0, 0xff); + nvram_read_u8(fill, NULL, "ledbh1", &sprom->gpio1, 0xff); + nvram_read_u8(fill, NULL, "ledbh2", &sprom->gpio2, 0xff); + nvram_read_u8(fill, NULL, "ledbh3", &sprom->gpio3, 0xff); + nvram_read_u8(fill, NULL, "aa2g", &sprom->ant_available_bg, 0); + nvram_read_u8(fill, NULL, "aa5g", &sprom->ant_available_a, 0); + nvram_read_s8(fill, NULL, "ag0", &sprom->antenna_gain.a0, 0); + nvram_read_s8(fill, NULL, "ag1", &sprom->antenna_gain.a1, 0); + nvram_read_alpha2(fill, "ccode", sprom->alpha2); +} + +static void bcm47xx_sprom_fill_r12389(struct ssb_sprom *sprom, + const struct bcm47xx_sprom_fill *fill) +{ + nvram_read_u16(fill, NULL, "pa0b0", &sprom->pa0b0, 0); + nvram_read_u16(fill, NULL, "pa0b1", &sprom->pa0b1, 0); + nvram_read_u16(fill, NULL, "pa0b2", &sprom->pa0b2, 0); + nvram_read_u8(fill, NULL, "pa0itssit", &sprom->itssi_bg, 0); + nvram_read_u8(fill, NULL, "pa0maxpwr", &sprom->maxpwr_bg, 0); + nvram_read_u16(fill, NULL, "pa1b0", &sprom->pa1b0, 0); + nvram_read_u16(fill, NULL, "pa1b1", &sprom->pa1b1, 0); + nvram_read_u16(fill, NULL, "pa1b2", &sprom->pa1b2, 0); + nvram_read_u8(fill, NULL, "pa1itssit", &sprom->itssi_a, 0); + nvram_read_u8(fill, NULL, "pa1maxpwr", &sprom->maxpwr_a, 0); +} + +static void bcm47xx_sprom_fill_r1(struct ssb_sprom *sprom, + const struct bcm47xx_sprom_fill *fill) +{ + nvram_read_u16(fill, NULL, "boardflags", &sprom->boardflags_lo, 0); + nvram_read_u8(fill, NULL, "cc", &sprom->country_code, 0); +} + +static void bcm47xx_sprom_fill_r2389(struct ssb_sprom *sprom, + const struct bcm47xx_sprom_fill *fill) +{ + nvram_read_u8(fill, NULL, "opo", &sprom->opo, 0); + nvram_read_u16(fill, NULL, "pa1lob0", &sprom->pa1lob0, 0); + nvram_read_u16(fill, NULL, "pa1lob1", &sprom->pa1lob1, 0); + nvram_read_u16(fill, NULL, "pa1lob2", &sprom->pa1lob2, 0); + nvram_read_u16(fill, NULL, "pa1hib0", &sprom->pa1hib0, 0); + nvram_read_u16(fill, NULL, "pa1hib1", &sprom->pa1hib1, 0); + nvram_read_u16(fill, NULL, "pa1hib2", &sprom->pa1hib2, 0); + nvram_read_u8(fill, NULL, "pa1lomaxpwr", &sprom->maxpwr_al, 0); + nvram_read_u8(fill, NULL, "pa1himaxpwr", &sprom->maxpwr_ah, 0); +} + +static void bcm47xx_sprom_fill_r389(struct ssb_sprom *sprom, + const struct bcm47xx_sprom_fill *fill) +{ + nvram_read_u8(fill, NULL, "bxa2g", &sprom->bxa2g, 0); + nvram_read_u8(fill, NULL, "rssisav2g", &sprom->rssisav2g, 0); + nvram_read_u8(fill, NULL, "rssismc2g", &sprom->rssismc2g, 0); + nvram_read_u8(fill, NULL, "rssismf2g", &sprom->rssismf2g, 0); + nvram_read_u8(fill, NULL, "bxa5g", &sprom->bxa5g, 0); + nvram_read_u8(fill, NULL, "rssisav5g", &sprom->rssisav5g, 0); + nvram_read_u8(fill, NULL, "rssismc5g", &sprom->rssismc5g, 0); + nvram_read_u8(fill, NULL, "rssismf5g", &sprom->rssismf5g, 0); + nvram_read_u8(fill, NULL, "tri2g", &sprom->tri2g, 0); + nvram_read_u8(fill, NULL, "tri5g", &sprom->tri5g, 0); + nvram_read_u8(fill, NULL, "tri5gl", &sprom->tri5gl, 0); + nvram_read_u8(fill, NULL, "tri5gh", &sprom->tri5gh, 0); + nvram_read_s8(fill, NULL, "rxpo2g", &sprom->rxpo2g, 0); + nvram_read_s8(fill, NULL, "rxpo5g", &sprom->rxpo5g, 0); +} + +static void bcm47xx_sprom_fill_r3(struct ssb_sprom *sprom, + const struct bcm47xx_sprom_fill *fill) +{ + nvram_read_u8(fill, NULL, "regrev", &sprom->regrev, 0); + nvram_read_leddc(fill, "leddc", &sprom->leddc_on_time, + &sprom->leddc_off_time); +} + +static void bcm47xx_sprom_fill_r4589(struct ssb_sprom *sprom, + const struct bcm47xx_sprom_fill *fill) +{ + nvram_read_u8(fill, NULL, "regrev", &sprom->regrev, 0); + nvram_read_s8(fill, NULL, "ag2", &sprom->antenna_gain.a2, 0); + nvram_read_s8(fill, NULL, "ag3", &sprom->antenna_gain.a3, 0); + nvram_read_u8(fill, NULL, "txchain", &sprom->txchain, 0xf); + nvram_read_u8(fill, NULL, "rxchain", &sprom->rxchain, 0xf); + nvram_read_u8(fill, NULL, "antswitch", &sprom->antswitch, 0xff); + nvram_read_leddc(fill, "leddc", &sprom->leddc_on_time, + &sprom->leddc_off_time); +} + +static void bcm47xx_sprom_fill_r458(struct ssb_sprom *sprom, + const struct bcm47xx_sprom_fill *fill) +{ + nvram_read_u16(fill, NULL, "cck2gpo", &sprom->cck2gpo, 0); + nvram_read_u32(fill, NULL, "ofdm2gpo", &sprom->ofdm2gpo, 0); + nvram_read_u32(fill, NULL, "ofdm5gpo", &sprom->ofdm5gpo, 0); + nvram_read_u32(fill, NULL, "ofdm5glpo", &sprom->ofdm5glpo, 0); + nvram_read_u32(fill, NULL, "ofdm5ghpo", &sprom->ofdm5ghpo, 0); + nvram_read_u16(fill, NULL, "cddpo", &sprom->cddpo, 0); + nvram_read_u16(fill, NULL, "stbcpo", &sprom->stbcpo, 0); + nvram_read_u16(fill, NULL, "bw40po", &sprom->bw40po, 0); + nvram_read_u16(fill, NULL, "bwduppo", &sprom->bwduppo, 0); + nvram_read_u16(fill, NULL, "mcs2gpo0", &sprom->mcs2gpo[0], 0); + nvram_read_u16(fill, NULL, "mcs2gpo1", &sprom->mcs2gpo[1], 0); + nvram_read_u16(fill, NULL, "mcs2gpo2", &sprom->mcs2gpo[2], 0); + nvram_read_u16(fill, NULL, "mcs2gpo3", &sprom->mcs2gpo[3], 0); + nvram_read_u16(fill, NULL, "mcs2gpo4", &sprom->mcs2gpo[4], 0); + nvram_read_u16(fill, NULL, "mcs2gpo5", &sprom->mcs2gpo[5], 0); + nvram_read_u16(fill, NULL, "mcs2gpo6", &sprom->mcs2gpo[6], 0); + nvram_read_u16(fill, NULL, "mcs2gpo7", &sprom->mcs2gpo[7], 0); + nvram_read_u16(fill, NULL, "mcs5gpo0", &sprom->mcs5gpo[0], 0); + nvram_read_u16(fill, NULL, "mcs5gpo1", &sprom->mcs5gpo[1], 0); + nvram_read_u16(fill, NULL, "mcs5gpo2", &sprom->mcs5gpo[2], 0); + nvram_read_u16(fill, NULL, "mcs5gpo3", &sprom->mcs5gpo[3], 0); + nvram_read_u16(fill, NULL, "mcs5gpo4", &sprom->mcs5gpo[4], 0); + nvram_read_u16(fill, NULL, "mcs5gpo5", &sprom->mcs5gpo[5], 0); + nvram_read_u16(fill, NULL, "mcs5gpo6", &sprom->mcs5gpo[6], 0); + nvram_read_u16(fill, NULL, "mcs5gpo7", &sprom->mcs5gpo[7], 0); + nvram_read_u16(fill, NULL, "mcs5glpo0", &sprom->mcs5glpo[0], 0); + nvram_read_u16(fill, NULL, "mcs5glpo1", &sprom->mcs5glpo[1], 0); + nvram_read_u16(fill, NULL, "mcs5glpo2", &sprom->mcs5glpo[2], 0); + nvram_read_u16(fill, NULL, "mcs5glpo3", &sprom->mcs5glpo[3], 0); + nvram_read_u16(fill, NULL, "mcs5glpo4", &sprom->mcs5glpo[4], 0); + nvram_read_u16(fill, NULL, "mcs5glpo5", &sprom->mcs5glpo[5], 0); + nvram_read_u16(fill, NULL, "mcs5glpo6", &sprom->mcs5glpo[6], 0); + nvram_read_u16(fill, NULL, "mcs5glpo7", &sprom->mcs5glpo[7], 0); + nvram_read_u16(fill, NULL, "mcs5ghpo0", &sprom->mcs5ghpo[0], 0); + nvram_read_u16(fill, NULL, "mcs5ghpo1", &sprom->mcs5ghpo[1], 0); + nvram_read_u16(fill, NULL, "mcs5ghpo2", &sprom->mcs5ghpo[2], 0); + nvram_read_u16(fill, NULL, "mcs5ghpo3", &sprom->mcs5ghpo[3], 0); + nvram_read_u16(fill, NULL, "mcs5ghpo4", &sprom->mcs5ghpo[4], 0); + nvram_read_u16(fill, NULL, "mcs5ghpo5", &sprom->mcs5ghpo[5], 0); + nvram_read_u16(fill, NULL, "mcs5ghpo6", &sprom->mcs5ghpo[6], 0); + nvram_read_u16(fill, NULL, "mcs5ghpo7", &sprom->mcs5ghpo[7], 0); +} + +static void bcm47xx_sprom_fill_r45(struct ssb_sprom *sprom, + const struct bcm47xx_sprom_fill *fill) +{ + nvram_read_u8(fill, NULL, "txpid2ga0", &sprom->txpid2g[0], 0); + nvram_read_u8(fill, NULL, "txpid2ga1", &sprom->txpid2g[1], 0); + nvram_read_u8(fill, NULL, "txpid2ga2", &sprom->txpid2g[2], 0); + nvram_read_u8(fill, NULL, "txpid2ga3", &sprom->txpid2g[3], 0); + nvram_read_u8(fill, NULL, "txpid5ga0", &sprom->txpid5g[0], 0); + nvram_read_u8(fill, NULL, "txpid5ga1", &sprom->txpid5g[1], 0); + nvram_read_u8(fill, NULL, "txpid5ga2", &sprom->txpid5g[2], 0); + nvram_read_u8(fill, NULL, "txpid5ga3", &sprom->txpid5g[3], 0); + nvram_read_u8(fill, NULL, "txpid5gla0", &sprom->txpid5gl[0], 0); + nvram_read_u8(fill, NULL, "txpid5gla1", &sprom->txpid5gl[1], 0); + nvram_read_u8(fill, NULL, "txpid5gla2", &sprom->txpid5gl[2], 0); + nvram_read_u8(fill, NULL, "txpid5gla3", &sprom->txpid5gl[3], 0); + nvram_read_u8(fill, NULL, "txpid5gha0", &sprom->txpid5gh[0], 0); + nvram_read_u8(fill, NULL, "txpid5gha1", &sprom->txpid5gh[1], 0); + nvram_read_u8(fill, NULL, "txpid5gha2", &sprom->txpid5gh[2], 0); + nvram_read_u8(fill, NULL, "txpid5gha3", &sprom->txpid5gh[3], 0); +} + +static void bcm47xx_sprom_fill_r89(struct ssb_sprom *sprom, + const struct bcm47xx_sprom_fill *fill) +{ + nvram_read_u8(fill, NULL, "tssipos2g", &sprom->fem.ghz2.tssipos, 0); + nvram_read_u8(fill, NULL, "extpagain2g", &sprom->fem.ghz2.extpa_gain, 0); + nvram_read_u8(fill, NULL, "pdetrange2g", &sprom->fem.ghz2.pdet_range, 0); + nvram_read_u8(fill, NULL, "triso2g", &sprom->fem.ghz2.tr_iso, 0); + nvram_read_u8(fill, NULL, "antswctl2g", &sprom->fem.ghz2.antswlut, 0); + nvram_read_u8(fill, NULL, "tssipos5g", &sprom->fem.ghz5.tssipos, 0); + nvram_read_u8(fill, NULL, "extpagain5g", &sprom->fem.ghz5.extpa_gain, 0); + nvram_read_u8(fill, NULL, "pdetrange5g", &sprom->fem.ghz5.pdet_range, 0); + nvram_read_u8(fill, NULL, "triso5g", &sprom->fem.ghz5.tr_iso, 0); + nvram_read_u8(fill, NULL, "antswctl5g", &sprom->fem.ghz5.antswlut, 0); + nvram_read_u8(fill, NULL, "tempthresh", &sprom->tempthresh, 0); + nvram_read_u8(fill, NULL, "tempoffset", &sprom->tempoffset, 0); + nvram_read_u16(fill, NULL, "rawtempsense", &sprom->rawtempsense, 0); + nvram_read_u8(fill, NULL, "measpower", &sprom->measpower, 0); + nvram_read_u8(fill, NULL, "tempsense_slope", &sprom->tempsense_slope, 0); + nvram_read_u8(fill, NULL, "tempcorrx", &sprom->tempcorrx, 0); + nvram_read_u8(fill, NULL, "tempsense_option", &sprom->tempsense_option, 0); + nvram_read_u8(fill, NULL, "freqoffset_corr", &sprom->freqoffset_corr, 0); + nvram_read_u8(fill, NULL, "iqcal_swp_dis", &sprom->iqcal_swp_dis, 0); + nvram_read_u8(fill, NULL, "hw_iqcal_en", &sprom->hw_iqcal_en, 0); + nvram_read_u8(fill, NULL, "elna2g", &sprom->elna2g, 0); + nvram_read_u8(fill, NULL, "elna5g", &sprom->elna5g, 0); + nvram_read_u8(fill, NULL, "phycal_tempdelta", &sprom->phycal_tempdelta, 0); + nvram_read_u8(fill, NULL, "temps_period", &sprom->temps_period, 0); + nvram_read_u8(fill, NULL, "temps_hysteresis", &sprom->temps_hysteresis, 0); + nvram_read_u8(fill, NULL, "measpower1", &sprom->measpower1, 0); + nvram_read_u8(fill, NULL, "measpower2", &sprom->measpower2, 0); + nvram_read_u8(fill, NULL, "rxgainerr2ga0", &sprom->rxgainerr2ga[0], 0); + nvram_read_u8(fill, NULL, "rxgainerr2ga1", &sprom->rxgainerr2ga[1], 0); + nvram_read_u8(fill, NULL, "rxgainerr2ga2", &sprom->rxgainerr2ga[2], 0); + nvram_read_u8(fill, NULL, "rxgainerr5gla0", &sprom->rxgainerr5gla[0], 0); + nvram_read_u8(fill, NULL, "rxgainerr5gla1", &sprom->rxgainerr5gla[1], 0); + nvram_read_u8(fill, NULL, "rxgainerr5gla2", &sprom->rxgainerr5gla[2], 0); + nvram_read_u8(fill, NULL, "rxgainerr5gma0", &sprom->rxgainerr5gma[0], 0); + nvram_read_u8(fill, NULL, "rxgainerr5gma1", &sprom->rxgainerr5gma[1], 0); + nvram_read_u8(fill, NULL, "rxgainerr5gma2", &sprom->rxgainerr5gma[2], 0); + nvram_read_u8(fill, NULL, "rxgainerr5gha0", &sprom->rxgainerr5gha[0], 0); + nvram_read_u8(fill, NULL, "rxgainerr5gha1", &sprom->rxgainerr5gha[1], 0); + nvram_read_u8(fill, NULL, "rxgainerr5gha2", &sprom->rxgainerr5gha[2], 0); + nvram_read_u8(fill, NULL, "rxgainerr5gua0", &sprom->rxgainerr5gua[0], 0); + nvram_read_u8(fill, NULL, "rxgainerr5gua1", &sprom->rxgainerr5gua[1], 0); + nvram_read_u8(fill, NULL, "rxgainerr5gua2", &sprom->rxgainerr5gua[2], 0); + nvram_read_u8(fill, NULL, "noiselvl2ga0", &sprom->noiselvl2ga[0], 0); + nvram_read_u8(fill, NULL, "noiselvl2ga1", &sprom->noiselvl2ga[1], 0); + nvram_read_u8(fill, NULL, "noiselvl2ga2", &sprom->noiselvl2ga[2], 0); + nvram_read_u8(fill, NULL, "noiselvl5gla0", &sprom->noiselvl5gla[0], 0); + nvram_read_u8(fill, NULL, "noiselvl5gla1", &sprom->noiselvl5gla[1], 0); + nvram_read_u8(fill, NULL, "noiselvl5gla2", &sprom->noiselvl5gla[2], 0); + nvram_read_u8(fill, NULL, "noiselvl5gma0", &sprom->noiselvl5gma[0], 0); + nvram_read_u8(fill, NULL, "noiselvl5gma1", &sprom->noiselvl5gma[1], 0); + nvram_read_u8(fill, NULL, "noiselvl5gma2", &sprom->noiselvl5gma[2], 0); + nvram_read_u8(fill, NULL, "noiselvl5gha0", &sprom->noiselvl5gha[0], 0); + nvram_read_u8(fill, NULL, "noiselvl5gha1", &sprom->noiselvl5gha[1], 0); + nvram_read_u8(fill, NULL, "noiselvl5gha2", &sprom->noiselvl5gha[2], 0); + nvram_read_u8(fill, NULL, "noiselvl5gua0", &sprom->noiselvl5gua[0], 0); + nvram_read_u8(fill, NULL, "noiselvl5gua1", &sprom->noiselvl5gua[1], 0); + nvram_read_u8(fill, NULL, "noiselvl5gua2", &sprom->noiselvl5gua[2], 0); + nvram_read_u8(fill, NULL, "pcieingress_war", &sprom->pcieingress_war, 0); +} + +static void bcm47xx_sprom_fill_r9(struct ssb_sprom *sprom, + const struct bcm47xx_sprom_fill *fill) +{ + nvram_read_u16(fill, NULL, "cckbw202gpo", &sprom->cckbw202gpo, 0); + nvram_read_u16(fill, NULL, "cckbw20ul2gpo", &sprom->cckbw20ul2gpo, 0); + nvram_read_u32(fill, NULL, "legofdmbw202gpo", &sprom->legofdmbw202gpo, 0); + nvram_read_u32(fill, NULL, "legofdmbw20ul2gpo", &sprom->legofdmbw20ul2gpo, 0); + nvram_read_u32(fill, NULL, "legofdmbw205glpo", &sprom->legofdmbw205glpo, 0); + nvram_read_u32(fill, NULL, "legofdmbw20ul5glpo", &sprom->legofdmbw20ul5glpo, 0); + nvram_read_u32(fill, NULL, "legofdmbw205gmpo", &sprom->legofdmbw205gmpo, 0); + nvram_read_u32(fill, NULL, "legofdmbw20ul5gmpo", &sprom->legofdmbw20ul5gmpo, 0); + nvram_read_u32(fill, NULL, "legofdmbw205ghpo", &sprom->legofdmbw205ghpo, 0); + nvram_read_u32(fill, NULL, "legofdmbw20ul5ghpo", &sprom->legofdmbw20ul5ghpo, 0); + nvram_read_u32(fill, NULL, "mcsbw202gpo", &sprom->mcsbw202gpo, 0); + nvram_read_u32(fill, NULL, "mcsbw20ul2gpo", &sprom->mcsbw20ul2gpo, 0); + nvram_read_u32(fill, NULL, "mcsbw402gpo", &sprom->mcsbw402gpo, 0); + nvram_read_u32(fill, NULL, "mcsbw205glpo", &sprom->mcsbw205glpo, 0); + nvram_read_u32(fill, NULL, "mcsbw20ul5glpo", &sprom->mcsbw20ul5glpo, 0); + nvram_read_u32(fill, NULL, "mcsbw405glpo", &sprom->mcsbw405glpo, 0); + nvram_read_u32(fill, NULL, "mcsbw205gmpo", &sprom->mcsbw205gmpo, 0); + nvram_read_u32(fill, NULL, "mcsbw20ul5gmpo", &sprom->mcsbw20ul5gmpo, 0); + nvram_read_u32(fill, NULL, "mcsbw405gmpo", &sprom->mcsbw405gmpo, 0); + nvram_read_u32(fill, NULL, "mcsbw205ghpo", &sprom->mcsbw205ghpo, 0); + nvram_read_u32(fill, NULL, "mcsbw20ul5ghpo", &sprom->mcsbw20ul5ghpo, 0); + nvram_read_u32(fill, NULL, "mcsbw405ghpo", &sprom->mcsbw405ghpo, 0); + nvram_read_u16(fill, NULL, "mcs32po", &sprom->mcs32po, 0); + nvram_read_u16(fill, NULL, "legofdm40duppo", &sprom->legofdm40duppo, 0); + nvram_read_u8(fill, NULL, "sar2g", &sprom->sar2g, 0); + nvram_read_u8(fill, NULL, "sar5g", &sprom->sar5g, 0); +} + +static void bcm47xx_sprom_fill_path_r4589(struct ssb_sprom *sprom, + const struct bcm47xx_sprom_fill *fill) +{ + char postfix[2]; + int i; + + for (i = 0; i < ARRAY_SIZE(sprom->core_pwr_info); i++) { + struct ssb_sprom_core_pwr_info *pwr_info = &sprom->core_pwr_info[i]; + + snprintf(postfix, sizeof(postfix), "%i", i); + nvram_read_u8(fill, postfix, "maxp2ga", &pwr_info->maxpwr_2g, 0); + nvram_read_u8(fill, postfix, "itt2ga", &pwr_info->itssi_2g, 0); + nvram_read_u8(fill, postfix, "itt5ga", &pwr_info->itssi_5g, 0); + nvram_read_u16(fill, postfix, "pa2gw0a", &pwr_info->pa_2g[0], 0); + nvram_read_u16(fill, postfix, "pa2gw1a", &pwr_info->pa_2g[1], 0); + nvram_read_u16(fill, postfix, "pa2gw2a", &pwr_info->pa_2g[2], 0); + nvram_read_u8(fill, postfix, "maxp5ga", &pwr_info->maxpwr_5g, 0); + nvram_read_u8(fill, postfix, "maxp5gha", &pwr_info->maxpwr_5gh, 0); + nvram_read_u8(fill, postfix, "maxp5gla", &pwr_info->maxpwr_5gl, 0); + nvram_read_u16(fill, postfix, "pa5gw0a", &pwr_info->pa_5g[0], 0); + nvram_read_u16(fill, postfix, "pa5gw1a", &pwr_info->pa_5g[1], 0); + nvram_read_u16(fill, postfix, "pa5gw2a", &pwr_info->pa_5g[2], 0); + nvram_read_u16(fill, postfix, "pa5glw0a", &pwr_info->pa_5gl[0], 0); + nvram_read_u16(fill, postfix, "pa5glw1a", &pwr_info->pa_5gl[1], 0); + nvram_read_u16(fill, postfix, "pa5glw2a", &pwr_info->pa_5gl[2], 0); + nvram_read_u16(fill, postfix, "pa5ghw0a", &pwr_info->pa_5gh[0], 0); + nvram_read_u16(fill, postfix, "pa5ghw1a", &pwr_info->pa_5gh[1], 0); + nvram_read_u16(fill, postfix, "pa5ghw2a", &pwr_info->pa_5gh[2], 0); + } +} + +static void bcm47xx_sprom_fill_path_r45(struct ssb_sprom *sprom, + const struct bcm47xx_sprom_fill *fill) +{ + char postfix[2]; + int i; + + for (i = 0; i < ARRAY_SIZE(sprom->core_pwr_info); i++) { + struct ssb_sprom_core_pwr_info *pwr_info = &sprom->core_pwr_info[i]; + + snprintf(postfix, sizeof(postfix), "%i", i); + nvram_read_u16(fill, postfix, "pa2gw3a", &pwr_info->pa_2g[3], 0); + nvram_read_u16(fill, postfix, "pa5gw3a", &pwr_info->pa_5g[3], 0); + nvram_read_u16(fill, postfix, "pa5glw3a", &pwr_info->pa_5gl[3], 0); + nvram_read_u16(fill, postfix, "pa5ghw3a", &pwr_info->pa_5gh[3], 0); + } +} + +static bool bcm47xx_is_valid_mac(u8 *mac) +{ + return mac && !(mac[0] == 0x00 && mac[1] == 0x90 && mac[2] == 0x4c); +} + +static int bcm47xx_increase_mac_addr(u8 *mac, u8 num) +{ + u8 *oui = mac + ETH_ALEN/2 - 1; + u8 *p = mac + ETH_ALEN - 1; + + do { + (*p) += num; + if (*p > num) + break; + p--; + num = 1; + } while (p != oui); + + if (p == oui) { + pr_err("unable to fetch mac address\n"); + return -ENOENT; + } + return 0; +} + +/* + * This is a global counter because different instances of sprom will + * access the same nvram. + */ +static int mac_addr_used = 2; + +static void bcm47xx_sprom_fill_ethernet(struct ssb_sprom *sprom, + const struct bcm47xx_sprom_fill *fill) +{ + nvram_read_macaddr(fill, "et0macaddr", sprom->et0mac); + nvram_read_u8(fill, NULL, "et0mdcport", &sprom->et0mdcport, 0); + nvram_read_u8(fill, NULL, "et0phyaddr", &sprom->et0phyaddr, 0); + + nvram_read_macaddr(fill, "et1macaddr", sprom->et1mac); + nvram_read_u8(fill, NULL, "et1mdcport", &sprom->et1mdcport, 0); + nvram_read_u8(fill, NULL, "et1phyaddr", &sprom->et1phyaddr, 0); + + nvram_read_macaddr(fill, "macaddr", sprom->il0mac); + nvram_read_macaddr(fill, "il0macaddr", sprom->il0mac); + + /* + * The address prefix 00:90:4C is used by Broadcom in their initial + * configuration. When a mac address with the prefix 00:90:4C is used + * all devices from the same series are sharing the same mac address. + * To prevent mac address collisions we replace them with a mac address + * based on the base address. + */ + if (!bcm47xx_is_valid_mac(sprom->il0mac)) { + u8 mac[6]; + struct bcm47xx_sprom_fill fill_no_prefix; + + memcpy(&fill_no_prefix, fill, sizeof(fill_no_prefix)); + fill_no_prefix.prefix = NULL; + + nvram_read_macaddr(&fill_no_prefix, "et0macaddr", mac); + if (bcm47xx_is_valid_mac(mac)) { + int err = bcm47xx_increase_mac_addr(mac, mac_addr_used); + + if (!err) { + ether_addr_copy(sprom->il0mac, mac); + mac_addr_used++; + } + } + } +} + +static void bcm47xx_sprom_fill_board_data(struct ssb_sprom *sprom, + const struct bcm47xx_sprom_fill *fill) +{ + nvram_read_u16(fill, NULL, "boardrev", &sprom->board_rev, 0); + nvram_read_u16(fill, NULL, "boardnum", &sprom->board_num, 0); + nvram_read_u16(fill, NULL, "boardtype", &sprom->board_type, 0); + nvram_read_u32_2(fill, "boardflags", &sprom->boardflags_lo, + &sprom->boardflags_hi); + nvram_read_u32_2(fill, "boardflags2", &sprom->boardflags2_lo, + &sprom->boardflags2_hi); +} + +static void bcm47xx_sprom_fill(struct ssb_sprom *sprom, + const struct bcm47xx_sprom_fill *fill) +{ + bcm47xx_sprom_fill_ethernet(sprom, fill); + bcm47xx_sprom_fill_board_data(sprom, fill); + + nvram_read_u8(fill, NULL, "sromrev", &sprom->revision, 0); + + switch (sprom->revision) { + case 1: + bcm47xx_sprom_fill_r1234589(sprom, fill); + bcm47xx_sprom_fill_r12389(sprom, fill); + bcm47xx_sprom_fill_r1(sprom, fill); + break; + case 2: + bcm47xx_sprom_fill_r1234589(sprom, fill); + bcm47xx_sprom_fill_r12389(sprom, fill); + bcm47xx_sprom_fill_r2389(sprom, fill); + break; + case 3: + bcm47xx_sprom_fill_r1234589(sprom, fill); + bcm47xx_sprom_fill_r12389(sprom, fill); + bcm47xx_sprom_fill_r2389(sprom, fill); + bcm47xx_sprom_fill_r389(sprom, fill); + bcm47xx_sprom_fill_r3(sprom, fill); + break; + case 4: + case 5: + bcm47xx_sprom_fill_r1234589(sprom, fill); + bcm47xx_sprom_fill_r4589(sprom, fill); + bcm47xx_sprom_fill_r458(sprom, fill); + bcm47xx_sprom_fill_r45(sprom, fill); + bcm47xx_sprom_fill_path_r4589(sprom, fill); + bcm47xx_sprom_fill_path_r45(sprom, fill); + break; + case 8: + bcm47xx_sprom_fill_r1234589(sprom, fill); + bcm47xx_sprom_fill_r12389(sprom, fill); + bcm47xx_sprom_fill_r2389(sprom, fill); + bcm47xx_sprom_fill_r389(sprom, fill); + bcm47xx_sprom_fill_r4589(sprom, fill); + bcm47xx_sprom_fill_r458(sprom, fill); + bcm47xx_sprom_fill_r89(sprom, fill); + bcm47xx_sprom_fill_path_r4589(sprom, fill); + break; + case 9: + bcm47xx_sprom_fill_r1234589(sprom, fill); + bcm47xx_sprom_fill_r12389(sprom, fill); + bcm47xx_sprom_fill_r2389(sprom, fill); + bcm47xx_sprom_fill_r389(sprom, fill); + bcm47xx_sprom_fill_r4589(sprom, fill); + bcm47xx_sprom_fill_r89(sprom, fill); + bcm47xx_sprom_fill_r9(sprom, fill); + bcm47xx_sprom_fill_path_r4589(sprom, fill); + break; + default: + pr_warn("Unsupported SPROM revision %d detected. Will extract v1\n", + sprom->revision); + sprom->revision = 1; + bcm47xx_sprom_fill_r1234589(sprom, fill); + bcm47xx_sprom_fill_r12389(sprom, fill); + bcm47xx_sprom_fill_r1(sprom, fill); + } +} + +static int bcm47xx_sprom_getenv(const struct bcm47xx_sprom_fill *fill, + const char *name, char *val, size_t val_len) +{ + const struct platform_device *nvram_dev = fill->priv; + + return bcm47xx_nvram_getenv(&nvram_dev->dev, name, val, val_len); +}; + +static int bcm47xx_sprom_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct device_node *np = dev->of_node; + struct ssb_sprom *sprom; + const __be32 *handle; + struct device_node *nvram_node; + struct platform_device *nvram_dev; + struct bcm47xx_sprom_fill fill; + + /* Alloc */ + sprom = devm_kzalloc(dev, sizeof(*sprom), GFP_KERNEL); + if (!sprom) + return -ENOMEM; + + handle = of_get_property(np, "nvram", NULL); + if (!handle) + return -ENOMEM; + + nvram_node = of_find_node_by_phandle(be32_to_cpup(handle)); + if (!nvram_node) + return -ENOMEM; + + nvram_dev = of_find_device_by_node(nvram_node); + if (!nvram_dev) + return -ENOMEM; + + fill.prefix = of_get_property(np, "prefix", NULL); + + fill.fallback = false; + fill.getenv = bcm47xx_sprom_getenv; + fill.priv = nvram_dev; + + bcm47xx_sprom_fill(sprom, &fill); + + platform_set_drvdata(pdev, sprom); + + return 0; +} + +static const struct of_device_id bcm47xx_sprom_of_match_table[] = { + { .compatible = "brcm,bcm47xx-sprom", }, + {}, +}; +MODULE_DEVICE_TABLE(of, mvebu_pcie_of_match_table); + +static struct platform_driver bcm47xx_sprom_driver = { + .driver = { + .owner = THIS_MODULE, + .name = "bcm47xx-sprom", + .of_match_table = bcm47xx_sprom_of_match_table, + /* driver unloading/unbinding currently not supported */ + .suppress_bind_attrs = true, + }, + .probe = bcm47xx_sprom_probe, +}; +module_platform_driver(bcm47xx_sprom_driver); + +MODULE_AUTHOR("Hauke Mehrtens <hauke@hauke-m.de>"); +MODULE_LICENSE("GPL v2");

[RFC,3/7] bcm47xx-sprom: add Broadcom sprom parser driver

Commit Message

Comments

Patch