From 52409fae3e4b8d16b68b61902fc09075cd97b75d Mon Sep 17 00:00:00 2001 From: Dominik Sliwa Date: Sun, 2 Jul 2017 16:41:37 +0200 Subject: Backports generated from 4.11 kernel Initial commit. Signed-off-by: Dominik Sliwa --- drivers/net/wireless/intersil/p54/eeprom.c | 982 +++++++++++++++++++++++++++++ 1 file changed, 982 insertions(+) create mode 100644 drivers/net/wireless/intersil/p54/eeprom.c (limited to 'drivers/net/wireless/intersil/p54/eeprom.c') diff --git a/drivers/net/wireless/intersil/p54/eeprom.c b/drivers/net/wireless/intersil/p54/eeprom.c new file mode 100644 index 0000000..d4c73d3 --- /dev/null +++ b/drivers/net/wireless/intersil/p54/eeprom.c @@ -0,0 +1,982 @@ +/* + * EEPROM parser code for mac80211 Prism54 drivers + * + * Copyright (c) 2006, Michael Wu + * Copyright (c) 2007-2009, Christian Lamparter + * Copyright 2008, Johannes Berg + * + * Based on: + * - the islsm (softmac prism54) driver, which is: + * Copyright 2004-2006 Jean-Baptiste Note , et al. + * - stlc45xx driver + * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies). + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include +#include +#include +#include + +#include +#include +#include + +#include "p54.h" +#include "eeprom.h" +#include "lmac.h" + +static struct ieee80211_rate p54_bgrates[] = { + { .bitrate = 10, .hw_value = 0, }, + { .bitrate = 20, .hw_value = 1, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, + { .bitrate = 55, .hw_value = 2, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, + { .bitrate = 110, .hw_value = 3, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, + { .bitrate = 60, .hw_value = 4, }, + { .bitrate = 90, .hw_value = 5, }, + { .bitrate = 120, .hw_value = 6, }, + { .bitrate = 180, .hw_value = 7, }, + { .bitrate = 240, .hw_value = 8, }, + { .bitrate = 360, .hw_value = 9, }, + { .bitrate = 480, .hw_value = 10, }, + { .bitrate = 540, .hw_value = 11, }, +}; + +static struct ieee80211_rate p54_arates[] = { + { .bitrate = 60, .hw_value = 4, }, + { .bitrate = 90, .hw_value = 5, }, + { .bitrate = 120, .hw_value = 6, }, + { .bitrate = 180, .hw_value = 7, }, + { .bitrate = 240, .hw_value = 8, }, + { .bitrate = 360, .hw_value = 9, }, + { .bitrate = 480, .hw_value = 10, }, + { .bitrate = 540, .hw_value = 11, }, +}; + +static struct p54_rssi_db_entry p54_rssi_default = { + /* + * The defaults are taken from usb-logs of the + * vendor driver. So, they should be safe to + * use in case we can't get a match from the + * rssi <-> dBm conversion database. + */ + .mul = 130, + .add = -398, +}; + +#define CHAN_HAS_CAL BIT(0) +#define CHAN_HAS_LIMIT BIT(1) +#define CHAN_HAS_CURVE BIT(2) +#define CHAN_HAS_ALL (CHAN_HAS_CAL | CHAN_HAS_LIMIT | CHAN_HAS_CURVE) + +struct p54_channel_entry { + u16 freq; + u16 data; + int index; + int max_power; + enum nl80211_band band; +}; + +struct p54_channel_list { + struct p54_channel_entry *channels; + size_t entries; + size_t max_entries; + size_t band_channel_num[NUM_NL80211_BANDS]; +}; + +static int p54_get_band_from_freq(u16 freq) +{ + /* FIXME: sync these values with the 802.11 spec */ + + if ((freq >= 2412) && (freq <= 2484)) + return NL80211_BAND_2GHZ; + + if ((freq >= 4920) && (freq <= 5825)) + return NL80211_BAND_5GHZ; + + return -1; +} + +static int same_band(u16 freq, u16 freq2) +{ + return p54_get_band_from_freq(freq) == p54_get_band_from_freq(freq2); +} + +static int p54_compare_channels(const void *_a, + const void *_b) +{ + const struct p54_channel_entry *a = _a; + const struct p54_channel_entry *b = _b; + + return a->freq - b->freq; +} + +static int p54_compare_rssichan(const void *_a, + const void *_b) +{ + const struct p54_rssi_db_entry *a = _a; + const struct p54_rssi_db_entry *b = _b; + + return a->freq - b->freq; +} + +static int p54_fill_band_bitrates(struct ieee80211_hw *dev, + struct ieee80211_supported_band *band_entry, + enum nl80211_band band) +{ + /* TODO: generate rate array dynamically */ + + switch (band) { + case NL80211_BAND_2GHZ: + band_entry->bitrates = p54_bgrates; + band_entry->n_bitrates = ARRAY_SIZE(p54_bgrates); + break; + case NL80211_BAND_5GHZ: + band_entry->bitrates = p54_arates; + band_entry->n_bitrates = ARRAY_SIZE(p54_arates); + break; + default: + return -EINVAL; + } + + return 0; +} + +static int p54_generate_band(struct ieee80211_hw *dev, + struct p54_channel_list *list, + unsigned int *chan_num, + enum nl80211_band band) +{ + struct p54_common *priv = dev->priv; + struct ieee80211_supported_band *tmp, *old; + unsigned int i, j; + int ret = -ENOMEM; + + if ((!list->entries) || (!list->band_channel_num[band])) + return -EINVAL; + + tmp = kzalloc(sizeof(*tmp), GFP_KERNEL); + if (!tmp) + goto err_out; + + tmp->channels = kzalloc(sizeof(struct ieee80211_channel) * + list->band_channel_num[band], GFP_KERNEL); + if (!tmp->channels) + goto err_out; + + ret = p54_fill_band_bitrates(dev, tmp, band); + if (ret) + goto err_out; + + for (i = 0, j = 0; (j < list->band_channel_num[band]) && + (i < list->entries); i++) { + struct p54_channel_entry *chan = &list->channels[i]; + struct ieee80211_channel *dest = &tmp->channels[j]; + + if (chan->band != band) + continue; + + if (chan->data != CHAN_HAS_ALL) { + wiphy_err(dev->wiphy, "%s%s%s is/are missing for " + "channel:%d [%d MHz].\n", + (chan->data & CHAN_HAS_CAL ? "" : + " [iqauto calibration data]"), + (chan->data & CHAN_HAS_LIMIT ? "" : + " [output power limits]"), + (chan->data & CHAN_HAS_CURVE ? "" : + " [curve data]"), + chan->index, chan->freq); + continue; + } + + dest->band = chan->band; + dest->center_freq = chan->freq; + dest->max_power = chan->max_power; + priv->survey[*chan_num].channel = &tmp->channels[j]; + priv->survey[*chan_num].filled = SURVEY_INFO_NOISE_DBM | + SURVEY_INFO_TIME | + SURVEY_INFO_TIME_BUSY | + SURVEY_INFO_TIME_TX; + dest->hw_value = (*chan_num); + j++; + (*chan_num)++; + } + + if (j == 0) { + wiphy_err(dev->wiphy, "Disabling totally damaged %d GHz band\n", + (band == NL80211_BAND_2GHZ) ? 2 : 5); + + ret = -ENODATA; + goto err_out; + } + + tmp->n_channels = j; + old = priv->band_table[band]; + priv->band_table[band] = tmp; + if (old) { + kfree(old->channels); + kfree(old); + } + + return 0; + +err_out: + if (tmp) { + kfree(tmp->channels); + kfree(tmp); + } + + return ret; +} + +static struct p54_channel_entry *p54_update_channel_param(struct p54_channel_list *list, + u16 freq, u16 data) +{ + int i; + struct p54_channel_entry *entry = NULL; + + /* + * usually all lists in the eeprom are mostly sorted. + * so it's very likely that the entry we are looking for + * is right at the end of the list + */ + for (i = list->entries; i >= 0; i--) { + if (freq == list->channels[i].freq) { + entry = &list->channels[i]; + break; + } + } + + if ((i < 0) && (list->entries < list->max_entries)) { + /* entry does not exist yet. Initialize a new one. */ + int band = p54_get_band_from_freq(freq); + + /* + * filter out frequencies which don't belong into + * any supported band. + */ + if (band >= 0) { + i = list->entries++; + list->band_channel_num[band]++; + + entry = &list->channels[i]; + entry->freq = freq; + entry->band = band; + entry->index = ieee80211_frequency_to_channel(freq); + entry->max_power = 0; + entry->data = 0; + } + } + + if (entry) + entry->data |= data; + + return entry; +} + +static int p54_get_maxpower(struct p54_common *priv, void *data) +{ + switch (priv->rxhw & PDR_SYNTH_FRONTEND_MASK) { + case PDR_SYNTH_FRONTEND_LONGBOW: { + struct pda_channel_output_limit_longbow *pda = data; + int j; + u16 rawpower = 0; + pda = data; + for (j = 0; j < ARRAY_SIZE(pda->point); j++) { + struct pda_channel_output_limit_point_longbow *point = + &pda->point[j]; + rawpower = max_t(u16, + rawpower, le16_to_cpu(point->val_qpsk)); + rawpower = max_t(u16, + rawpower, le16_to_cpu(point->val_bpsk)); + rawpower = max_t(u16, + rawpower, le16_to_cpu(point->val_16qam)); + rawpower = max_t(u16, + rawpower, le16_to_cpu(point->val_64qam)); + } + /* longbow seems to use 1/16 dBm units */ + return rawpower / 16; + } + + case PDR_SYNTH_FRONTEND_DUETTE3: + case PDR_SYNTH_FRONTEND_DUETTE2: + case PDR_SYNTH_FRONTEND_FRISBEE: + case PDR_SYNTH_FRONTEND_XBOW: { + struct pda_channel_output_limit *pda = data; + u8 rawpower = 0; + rawpower = max(rawpower, pda->val_qpsk); + rawpower = max(rawpower, pda->val_bpsk); + rawpower = max(rawpower, pda->val_16qam); + rawpower = max(rawpower, pda->val_64qam); + /* raw values are in 1/4 dBm units */ + return rawpower / 4; + } + + default: + return 20; + } +} + +static int p54_generate_channel_lists(struct ieee80211_hw *dev) +{ + struct p54_common *priv = dev->priv; + struct p54_channel_list *list; + unsigned int i, j, k, max_channel_num; + int ret = 0; + u16 freq; + + if ((priv->iq_autocal_len != priv->curve_data->entries) || + (priv->iq_autocal_len != priv->output_limit->entries)) + wiphy_err(dev->wiphy, + "Unsupported or damaged EEPROM detected. " + "You may not be able to use all channels.\n"); + + max_channel_num = max_t(unsigned int, priv->output_limit->entries, + priv->iq_autocal_len); + max_channel_num = max_t(unsigned int, max_channel_num, + priv->curve_data->entries); + + list = kzalloc(sizeof(*list), GFP_KERNEL); + if (!list) { + ret = -ENOMEM; + goto free; + } + priv->chan_num = max_channel_num; + priv->survey = kzalloc(sizeof(struct survey_info) * max_channel_num, + GFP_KERNEL); + if (!priv->survey) { + ret = -ENOMEM; + goto free; + } + + list->max_entries = max_channel_num; + list->channels = kzalloc(sizeof(struct p54_channel_entry) * + max_channel_num, GFP_KERNEL); + if (!list->channels) { + ret = -ENOMEM; + goto free; + } + + for (i = 0; i < max_channel_num; i++) { + if (i < priv->iq_autocal_len) { + freq = le16_to_cpu(priv->iq_autocal[i].freq); + p54_update_channel_param(list, freq, CHAN_HAS_CAL); + } + + if (i < priv->output_limit->entries) { + struct p54_channel_entry *tmp; + + void *data = (void *) ((unsigned long) i * + priv->output_limit->entry_size + + priv->output_limit->offset + + priv->output_limit->data); + + freq = le16_to_cpup((__le16 *) data); + tmp = p54_update_channel_param(list, freq, + CHAN_HAS_LIMIT); + if (tmp) { + tmp->max_power = p54_get_maxpower(priv, data); + } + } + + if (i < priv->curve_data->entries) { + freq = le16_to_cpup((__le16 *) (i * + priv->curve_data->entry_size + + priv->curve_data->offset + + priv->curve_data->data)); + + p54_update_channel_param(list, freq, CHAN_HAS_CURVE); + } + } + + /* sort the channel list by frequency */ + sort(list->channels, list->entries, sizeof(struct p54_channel_entry), + p54_compare_channels, NULL); + + k = 0; + for (i = 0, j = 0; i < NUM_NL80211_BANDS; i++) { + if (p54_generate_band(dev, list, &k, i) == 0) + j++; + } + if (j == 0) { + /* no useable band available. */ + ret = -EINVAL; + } + +free: + if (list) { + kfree(list->channels); + kfree(list); + } + if (ret) { + kfree(priv->survey); + priv->survey = NULL; + } + + return ret; +} + +static int p54_convert_rev0(struct ieee80211_hw *dev, + struct pda_pa_curve_data *curve_data) +{ + struct p54_common *priv = dev->priv; + struct p54_pa_curve_data_sample *dst; + struct pda_pa_curve_data_sample_rev0 *src; + size_t cd_len = sizeof(*curve_data) + + (curve_data->points_per_channel*sizeof(*dst) + 2) * + curve_data->channels; + unsigned int i, j; + void *source, *target; + + priv->curve_data = kmalloc(sizeof(*priv->curve_data) + cd_len, + GFP_KERNEL); + if (!priv->curve_data) + return -ENOMEM; + + priv->curve_data->entries = curve_data->channels; + priv->curve_data->entry_size = sizeof(__le16) + + sizeof(*dst) * curve_data->points_per_channel; + priv->curve_data->offset = offsetof(struct pda_pa_curve_data, data); + priv->curve_data->len = cd_len; + memcpy(priv->curve_data->data, curve_data, sizeof(*curve_data)); + source = curve_data->data; + target = ((struct pda_pa_curve_data *) priv->curve_data->data)->data; + for (i = 0; i < curve_data->channels; i++) { + __le16 *freq = source; + source += sizeof(__le16); + *((__le16 *)target) = *freq; + target += sizeof(__le16); + for (j = 0; j < curve_data->points_per_channel; j++) { + dst = target; + src = source; + + dst->rf_power = src->rf_power; + dst->pa_detector = src->pa_detector; + dst->data_64qam = src->pcv; + /* "invent" the points for the other modulations */ +#define SUB(x, y) (u8)(((x) - (y)) > (x) ? 0 : (x) - (y)) + dst->data_16qam = SUB(src->pcv, 12); + dst->data_qpsk = SUB(dst->data_16qam, 12); + dst->data_bpsk = SUB(dst->data_qpsk, 12); + dst->data_barker = SUB(dst->data_bpsk, 14); +#undef SUB + target += sizeof(*dst); + source += sizeof(*src); + } + } + + return 0; +} + +static int p54_convert_rev1(struct ieee80211_hw *dev, + struct pda_pa_curve_data *curve_data) +{ + struct p54_common *priv = dev->priv; + struct p54_pa_curve_data_sample *dst; + struct pda_pa_curve_data_sample_rev1 *src; + size_t cd_len = sizeof(*curve_data) + + (curve_data->points_per_channel*sizeof(*dst) + 2) * + curve_data->channels; + unsigned int i, j; + void *source, *target; + + priv->curve_data = kzalloc(cd_len + sizeof(*priv->curve_data), + GFP_KERNEL); + if (!priv->curve_data) + return -ENOMEM; + + priv->curve_data->entries = curve_data->channels; + priv->curve_data->entry_size = sizeof(__le16) + + sizeof(*dst) * curve_data->points_per_channel; + priv->curve_data->offset = offsetof(struct pda_pa_curve_data, data); + priv->curve_data->len = cd_len; + memcpy(priv->curve_data->data, curve_data, sizeof(*curve_data)); + source = curve_data->data; + target = ((struct pda_pa_curve_data *) priv->curve_data->data)->data; + for (i = 0; i < curve_data->channels; i++) { + __le16 *freq = source; + source += sizeof(__le16); + *((__le16 *)target) = *freq; + target += sizeof(__le16); + for (j = 0; j < curve_data->points_per_channel; j++) { + memcpy(target, source, sizeof(*src)); + + target += sizeof(*dst); + source += sizeof(*src); + } + source++; + } + + return 0; +} + +static const char *p54_rf_chips[] = { "INVALID-0", "Duette3", "Duette2", + "Frisbee", "Xbow", "Longbow", "INVALID-6", "INVALID-7" }; + +static int p54_parse_rssical(struct ieee80211_hw *dev, + u8 *data, int len, u16 type) +{ + struct p54_common *priv = dev->priv; + struct p54_rssi_db_entry *entry; + size_t db_len, entries; + int offset = 0, i; + + if (type != PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED) { + entries = (type == PDR_RSSI_LINEAR_APPROXIMATION) ? 1 : 2; + if (len != sizeof(struct pda_rssi_cal_entry) * entries) { + wiphy_err(dev->wiphy, "rssical size mismatch.\n"); + goto err_data; + } + } else { + /* + * Some devices (Dell 1450 USB, Xbow 5GHz card, etc...) + * have an empty two byte header. + */ + if (*((__le16 *)&data[offset]) == cpu_to_le16(0)) + offset += 2; + + entries = (len - offset) / + sizeof(struct pda_rssi_cal_ext_entry); + + if (len < offset || + (len - offset) % sizeof(struct pda_rssi_cal_ext_entry) || + entries == 0) { + wiphy_err(dev->wiphy, "invalid rssi database.\n"); + goto err_data; + } + } + + db_len = sizeof(*entry) * entries; + priv->rssi_db = kzalloc(db_len + sizeof(*priv->rssi_db), GFP_KERNEL); + if (!priv->rssi_db) + return -ENOMEM; + + priv->rssi_db->offset = 0; + priv->rssi_db->entries = entries; + priv->rssi_db->entry_size = sizeof(*entry); + priv->rssi_db->len = db_len; + + entry = (void *)((unsigned long)priv->rssi_db->data + priv->rssi_db->offset); + if (type == PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED) { + struct pda_rssi_cal_ext_entry *cal = (void *) &data[offset]; + + for (i = 0; i < entries; i++) { + entry[i].freq = le16_to_cpu(cal[i].freq); + entry[i].mul = (s16) le16_to_cpu(cal[i].mul); + entry[i].add = (s16) le16_to_cpu(cal[i].add); + } + } else { + struct pda_rssi_cal_entry *cal = (void *) &data[offset]; + + for (i = 0; i < entries; i++) { + u16 freq = 0; + switch (i) { + case NL80211_BAND_2GHZ: + freq = 2437; + break; + case NL80211_BAND_5GHZ: + freq = 5240; + break; + } + + entry[i].freq = freq; + entry[i].mul = (s16) le16_to_cpu(cal[i].mul); + entry[i].add = (s16) le16_to_cpu(cal[i].add); + } + } + + /* sort the list by channel frequency */ + sort(entry, entries, sizeof(*entry), p54_compare_rssichan, NULL); + return 0; + +err_data: + wiphy_err(dev->wiphy, + "rssi calibration data packing type:(%x) len:%d.\n", + type, len); + + print_hex_dump_bytes("rssical:", DUMP_PREFIX_NONE, data, len); + + wiphy_err(dev->wiphy, "please report this issue.\n"); + return -EINVAL; +} + +struct p54_rssi_db_entry *p54_rssi_find(struct p54_common *priv, const u16 freq) +{ + struct p54_rssi_db_entry *entry; + int i, found = -1; + + if (!priv->rssi_db) + return &p54_rssi_default; + + entry = (void *)(priv->rssi_db->data + priv->rssi_db->offset); + for (i = 0; i < priv->rssi_db->entries; i++) { + if (!same_band(freq, entry[i].freq)) + continue; + + if (found == -1) { + found = i; + continue; + } + + /* nearest match */ + if (abs(freq - entry[i].freq) < + abs(freq - entry[found].freq)) { + found = i; + continue; + } else { + break; + } + } + + return found < 0 ? &p54_rssi_default : &entry[found]; +} + +static void p54_parse_default_country(struct ieee80211_hw *dev, + void *data, int len) +{ + struct pda_country *country; + + if (len != sizeof(*country)) { + wiphy_err(dev->wiphy, + "found possible invalid default country eeprom entry. (entry size: %d)\n", + len); + + print_hex_dump_bytes("country:", DUMP_PREFIX_NONE, + data, len); + + wiphy_err(dev->wiphy, "please report this issue.\n"); + return; + } + + country = (struct pda_country *) data; + if (country->flags == PDR_COUNTRY_CERT_CODE_PSEUDO) + regulatory_hint(dev->wiphy, country->alpha2); + else { + /* TODO: + * write a shared/common function that converts + * "Regulatory domain codes" (802.11-2007 14.8.2.2) + * into ISO/IEC 3166-1 alpha2 for regulatory_hint. + */ + } +} + +static int p54_convert_output_limits(struct ieee80211_hw *dev, + u8 *data, size_t len) +{ + struct p54_common *priv = dev->priv; + + if (len < 2) + return -EINVAL; + + if (data[0] != 0) { + wiphy_err(dev->wiphy, "unknown output power db revision:%x\n", + data[0]); + return -EINVAL; + } + + if (2 + data[1] * sizeof(struct pda_channel_output_limit) > len) + return -EINVAL; + + priv->output_limit = kmalloc(data[1] * + sizeof(struct pda_channel_output_limit) + + sizeof(*priv->output_limit), GFP_KERNEL); + + if (!priv->output_limit) + return -ENOMEM; + + priv->output_limit->offset = 0; + priv->output_limit->entries = data[1]; + priv->output_limit->entry_size = + sizeof(struct pda_channel_output_limit); + priv->output_limit->len = priv->output_limit->entry_size * + priv->output_limit->entries + + priv->output_limit->offset; + + memcpy(priv->output_limit->data, &data[2], + data[1] * sizeof(struct pda_channel_output_limit)); + + return 0; +} + +static struct p54_cal_database *p54_convert_db(struct pda_custom_wrapper *src, + size_t total_len) +{ + struct p54_cal_database *dst; + size_t payload_len, entries, entry_size, offset; + + payload_len = le16_to_cpu(src->len); + entries = le16_to_cpu(src->entries); + entry_size = le16_to_cpu(src->entry_size); + offset = le16_to_cpu(src->offset); + if (((entries * entry_size + offset) != payload_len) || + (payload_len + sizeof(*src) != total_len)) + return NULL; + + dst = kmalloc(sizeof(*dst) + payload_len, GFP_KERNEL); + if (!dst) + return NULL; + + dst->entries = entries; + dst->entry_size = entry_size; + dst->offset = offset; + dst->len = payload_len; + + memcpy(dst->data, src->data, payload_len); + return dst; +} + +int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len) +{ + struct p54_common *priv = dev->priv; + struct eeprom_pda_wrap *wrap; + struct pda_entry *entry; + unsigned int data_len, entry_len; + void *tmp; + int err; + u8 *end = (u8 *)eeprom + len; + u16 synth = 0; + u16 crc16 = ~0; + + wrap = (struct eeprom_pda_wrap *) eeprom; + entry = (void *)wrap->data + le16_to_cpu(wrap->len); + + /* verify that at least the entry length/code fits */ + while ((u8 *)entry <= end - sizeof(*entry)) { + entry_len = le16_to_cpu(entry->len); + data_len = ((entry_len - 1) << 1); + + /* abort if entry exceeds whole structure */ + if ((u8 *)entry + sizeof(*entry) + data_len > end) + break; + + switch (le16_to_cpu(entry->code)) { + case PDR_MAC_ADDRESS: + if (data_len != ETH_ALEN) + break; + SET_IEEE80211_PERM_ADDR(dev, entry->data); + break; + case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS: + if (priv->output_limit) + break; + err = p54_convert_output_limits(dev, entry->data, + data_len); + if (err) + goto err; + break; + case PDR_PRISM_PA_CAL_CURVE_DATA: { + struct pda_pa_curve_data *curve_data = + (struct pda_pa_curve_data *)entry->data; + if (data_len < sizeof(*curve_data)) { + err = -EINVAL; + goto err; + } + + switch (curve_data->cal_method_rev) { + case 0: + err = p54_convert_rev0(dev, curve_data); + break; + case 1: + err = p54_convert_rev1(dev, curve_data); + break; + default: + wiphy_err(dev->wiphy, + "unknown curve data revision %d\n", + curve_data->cal_method_rev); + err = -ENODEV; + break; + } + if (err) + goto err; + } + break; + case PDR_PRISM_ZIF_TX_IQ_CALIBRATION: + priv->iq_autocal = kmemdup(entry->data, data_len, + GFP_KERNEL); + if (!priv->iq_autocal) { + err = -ENOMEM; + goto err; + } + + priv->iq_autocal_len = data_len / sizeof(struct pda_iq_autocal_entry); + break; + case PDR_DEFAULT_COUNTRY: + p54_parse_default_country(dev, entry->data, data_len); + break; + case PDR_INTERFACE_LIST: + tmp = entry->data; + while ((u8 *)tmp < entry->data + data_len) { + struct exp_if *exp_if = tmp; + if (exp_if->if_id == cpu_to_le16(IF_ID_ISL39000)) + synth = le16_to_cpu(exp_if->variant); + tmp += sizeof(*exp_if); + } + break; + case PDR_HARDWARE_PLATFORM_COMPONENT_ID: + if (data_len < 2) + break; + priv->version = *(u8 *)(entry->data + 1); + break; + case PDR_RSSI_LINEAR_APPROXIMATION: + case PDR_RSSI_LINEAR_APPROXIMATION_DUAL_BAND: + case PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED: + err = p54_parse_rssical(dev, entry->data, data_len, + le16_to_cpu(entry->code)); + if (err) + goto err; + break; + case PDR_RSSI_LINEAR_APPROXIMATION_CUSTOMV2: { + struct pda_custom_wrapper *pda = (void *) entry->data; + __le16 *src; + u16 *dst; + int i; + + if (priv->rssi_db || data_len < sizeof(*pda)) + break; + + priv->rssi_db = p54_convert_db(pda, data_len); + if (!priv->rssi_db) + break; + + src = (void *) priv->rssi_db->data; + dst = (void *) priv->rssi_db->data; + + for (i = 0; i < priv->rssi_db->entries; i++) + *(dst++) = (s16) le16_to_cpu(*(src++)); + + } + break; + case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS_CUSTOM: { + struct pda_custom_wrapper *pda = (void *) entry->data; + if (priv->output_limit || data_len < sizeof(*pda)) + break; + priv->output_limit = p54_convert_db(pda, data_len); + } + break; + case PDR_PRISM_PA_CAL_CURVE_DATA_CUSTOM: { + struct pda_custom_wrapper *pda = (void *) entry->data; + if (priv->curve_data || data_len < sizeof(*pda)) + break; + priv->curve_data = p54_convert_db(pda, data_len); + } + break; + case PDR_END: + crc16 = ~crc_ccitt(crc16, (u8 *) entry, sizeof(*entry)); + if (crc16 != le16_to_cpup((__le16 *)entry->data)) { + wiphy_err(dev->wiphy, "eeprom failed checksum " + "test!\n"); + err = -ENOMSG; + goto err; + } else { + goto good_eeprom; + } + break; + default: + break; + } + + crc16 = crc_ccitt(crc16, (u8 *)entry, (entry_len + 1) * 2); + entry = (void *)entry + (entry_len + 1) * 2; + } + + wiphy_err(dev->wiphy, "unexpected end of eeprom data.\n"); + err = -ENODATA; + goto err; + +good_eeprom: + if (!synth || !priv->iq_autocal || !priv->output_limit || + !priv->curve_data) { + wiphy_err(dev->wiphy, + "not all required entries found in eeprom!\n"); + err = -EINVAL; + goto err; + } + + priv->rxhw = synth & PDR_SYNTH_FRONTEND_MASK; + + err = p54_generate_channel_lists(dev); + if (err) + goto err; + + if (priv->rxhw == PDR_SYNTH_FRONTEND_XBOW) + p54_init_xbow_synth(priv); + if (!(synth & PDR_SYNTH_24_GHZ_DISABLED)) + dev->wiphy->bands[NL80211_BAND_2GHZ] = + priv->band_table[NL80211_BAND_2GHZ]; + if (!(synth & PDR_SYNTH_5_GHZ_DISABLED)) + dev->wiphy->bands[NL80211_BAND_5GHZ] = + priv->band_table[NL80211_BAND_5GHZ]; + if ((synth & PDR_SYNTH_RX_DIV_MASK) == PDR_SYNTH_RX_DIV_SUPPORTED) + priv->rx_diversity_mask = 3; + if ((synth & PDR_SYNTH_TX_DIV_MASK) == PDR_SYNTH_TX_DIV_SUPPORTED) + priv->tx_diversity_mask = 3; + + if (!is_valid_ether_addr(dev->wiphy->perm_addr)) { + u8 perm_addr[ETH_ALEN]; + + wiphy_warn(dev->wiphy, + "Invalid hwaddr! Using randomly generated MAC addr\n"); + eth_random_addr(perm_addr); + SET_IEEE80211_PERM_ADDR(dev, perm_addr); + } + + priv->cur_rssi = &p54_rssi_default; + + wiphy_info(dev->wiphy, "hwaddr %pM, MAC:isl38%02x RF:%s\n", + dev->wiphy->perm_addr, priv->version, + p54_rf_chips[priv->rxhw]); + + return 0; + +err: + kfree(priv->iq_autocal); + kfree(priv->output_limit); + kfree(priv->curve_data); + kfree(priv->rssi_db); + kfree(priv->survey); + priv->iq_autocal = NULL; + priv->output_limit = NULL; + priv->curve_data = NULL; + priv->rssi_db = NULL; + priv->survey = NULL; + + wiphy_err(dev->wiphy, "eeprom parse failed!\n"); + return err; +} +EXPORT_SYMBOL_GPL(p54_parse_eeprom); + +int p54_read_eeprom(struct ieee80211_hw *dev) +{ + struct p54_common *priv = dev->priv; + size_t eeprom_size = 0x2020, offset = 0, blocksize, maxblocksize; + int ret = -ENOMEM; + void *eeprom; + + maxblocksize = EEPROM_READBACK_LEN; + if (priv->fw_var >= 0x509) + maxblocksize -= 0xc; + else + maxblocksize -= 0x4; + + eeprom = kzalloc(eeprom_size, GFP_KERNEL); + if (unlikely(!eeprom)) + goto free; + + while (eeprom_size) { + blocksize = min(eeprom_size, maxblocksize); + ret = p54_download_eeprom(priv, eeprom + offset, + offset, blocksize); + if (unlikely(ret)) + goto free; + + offset += blocksize; + eeprom_size -= blocksize; + } + + ret = p54_parse_eeprom(dev, eeprom, offset); +free: + kfree(eeprom); + return ret; +} +EXPORT_SYMBOL_GPL(p54_read_eeprom); -- cgit v1.2.3