| /* |
| * EEPROM parser code for mac80211 Prism54 drivers |
| * |
| * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net> |
| * Copyright (c) 2007-2009, Christian Lamparter <chunkeey@web.de> |
| * Copyright 2008, Johannes Berg <johannes@sipsolutions.net> |
| * |
| * Based on: |
| * - the islsm (softmac prism54) driver, which is: |
| * Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, 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 <linux/init.h> |
| #include <linux/firmware.h> |
| #include <linux/etherdevice.h> |
| #include <linux/sort.h> |
| #include <linux/slab.h> |
| |
| #include <net/mac80211.h> |
| #include <linux/crc-ccitt.h> |
| #include <linux/export.h> |
| |
| #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 ieee80211_band band; |
| }; |
| |
| struct p54_channel_list { |
| struct p54_channel_entry *channels; |
| size_t entries; |
| size_t max_entries; |
| size_t band_channel_num[IEEE80211_NUM_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 IEEE80211_BAND_2GHZ; |
| |
| if ((freq >= 4920) && (freq <= 5825)) |
| return IEEE80211_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 ieee80211_band band) |
| { |
| /* TODO: generate rate array dynamically */ |
| |
| switch (band) { |
| case IEEE80211_BAND_2GHZ: |
| band_entry->bitrates = p54_bgrates; |
| band_entry->n_bitrates = ARRAY_SIZE(p54_bgrates); |
| break; |
| case IEEE80211_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 ieee80211_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_CHANNEL_TIME | |
| SURVEY_INFO_CHANNEL_TIME_BUSY | |
| SURVEY_INFO_CHANNEL_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 == IEEE80211_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 < IEEE80211_NUM_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) % 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 IEEE80211_BAND_2GHZ: |
| freq = 2437; |
| break; |
| case IEEE80211_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[IEEE80211_BAND_2GHZ] = |
| priv->band_table[IEEE80211_BAND_2GHZ]; |
| if (!(synth & PDR_SYNTH_5_GHZ_DISABLED)) |
| dev->wiphy->bands[IEEE80211_BAND_5GHZ] = |
| priv->band_table[IEEE80211_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); |