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981 lines
25 KiB
981 lines
25 KiB
// SPDX-License-Identifier: GPL-2.0-only |
|
/* |
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* EEPROM parser code for mac80211 Prism54 drivers |
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* |
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* Copyright (c) 2006, Michael Wu <[email protected]> |
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* Copyright (c) 2007-2009, Christian Lamparter <[email protected]> |
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* Copyright 2008, Johannes Berg <[email protected]> |
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* |
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* Based on: |
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* - the islsm (softmac prism54) driver, which is: |
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* Copyright 2004-2006 Jean-Baptiste Note <[email protected]>, et al. |
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* - stlc45xx driver |
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* Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies). |
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*/ |
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|
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#include <linux/firmware.h> |
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#include <linux/etherdevice.h> |
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#include <linux/sort.h> |
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#include <linux/slab.h> |
|
|
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#include <net/mac80211.h> |
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#include <linux/crc-ccitt.h> |
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#include <linux/export.h> |
|
|
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#include "p54.h" |
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#include "eeprom.h" |
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#include "lmac.h" |
|
|
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static struct ieee80211_rate p54_bgrates[] = { |
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{ .bitrate = 10, .hw_value = 0, }, |
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{ .bitrate = 20, .hw_value = 1, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, |
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{ .bitrate = 55, .hw_value = 2, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, |
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{ .bitrate = 110, .hw_value = 3, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, |
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{ .bitrate = 60, .hw_value = 4, }, |
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{ .bitrate = 90, .hw_value = 5, }, |
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{ .bitrate = 120, .hw_value = 6, }, |
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{ .bitrate = 180, .hw_value = 7, }, |
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{ .bitrate = 240, .hw_value = 8, }, |
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{ .bitrate = 360, .hw_value = 9, }, |
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{ .bitrate = 480, .hw_value = 10, }, |
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{ .bitrate = 540, .hw_value = 11, }, |
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}; |
|
|
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static struct ieee80211_rate p54_arates[] = { |
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{ .bitrate = 60, .hw_value = 4, }, |
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{ .bitrate = 90, .hw_value = 5, }, |
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{ .bitrate = 120, .hw_value = 6, }, |
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{ .bitrate = 180, .hw_value = 7, }, |
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{ .bitrate = 240, .hw_value = 8, }, |
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{ .bitrate = 360, .hw_value = 9, }, |
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{ .bitrate = 480, .hw_value = 10, }, |
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{ .bitrate = 540, .hw_value = 11, }, |
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}; |
|
|
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static struct p54_rssi_db_entry p54_rssi_default = { |
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/* |
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* The defaults are taken from usb-logs of the |
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* vendor driver. So, they should be safe to |
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* use in case we can't get a match from the |
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* rssi <-> dBm conversion database. |
|
*/ |
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.mul = 130, |
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.add = -398, |
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}; |
|
|
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#define CHAN_HAS_CAL BIT(0) |
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#define CHAN_HAS_LIMIT BIT(1) |
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#define CHAN_HAS_CURVE BIT(2) |
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#define CHAN_HAS_ALL (CHAN_HAS_CAL | CHAN_HAS_LIMIT | CHAN_HAS_CURVE) |
|
|
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struct p54_channel_entry { |
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u16 freq; |
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u16 data; |
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int index; |
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int max_power; |
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enum nl80211_band band; |
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}; |
|
|
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struct p54_channel_list { |
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struct p54_channel_entry *channels; |
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size_t entries; |
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size_t max_entries; |
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size_t band_channel_num[NUM_NL80211_BANDS]; |
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}; |
|
|
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static int p54_get_band_from_freq(u16 freq) |
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{ |
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/* FIXME: sync these values with the 802.11 spec */ |
|
|
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if ((freq >= 2412) && (freq <= 2484)) |
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return NL80211_BAND_2GHZ; |
|
|
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if ((freq >= 4920) && (freq <= 5825)) |
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return NL80211_BAND_5GHZ; |
|
|
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return -1; |
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} |
|
|
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static int same_band(u16 freq, u16 freq2) |
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{ |
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return p54_get_band_from_freq(freq) == p54_get_band_from_freq(freq2); |
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} |
|
|
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static int p54_compare_channels(const void *_a, |
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const void *_b) |
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{ |
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const struct p54_channel_entry *a = _a; |
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const struct p54_channel_entry *b = _b; |
|
|
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return a->freq - b->freq; |
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} |
|
|
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static int p54_compare_rssichan(const void *_a, |
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const void *_b) |
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{ |
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const struct p54_rssi_db_entry *a = _a; |
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const struct p54_rssi_db_entry *b = _b; |
|
|
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return a->freq - b->freq; |
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} |
|
|
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static int p54_fill_band_bitrates(struct ieee80211_hw *dev, |
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struct ieee80211_supported_band *band_entry, |
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enum nl80211_band band) |
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{ |
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/* TODO: generate rate array dynamically */ |
|
|
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switch (band) { |
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case NL80211_BAND_2GHZ: |
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band_entry->bitrates = p54_bgrates; |
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band_entry->n_bitrates = ARRAY_SIZE(p54_bgrates); |
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break; |
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case NL80211_BAND_5GHZ: |
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band_entry->bitrates = p54_arates; |
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band_entry->n_bitrates = ARRAY_SIZE(p54_arates); |
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break; |
|
default: |
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return -EINVAL; |
|
} |
|
|
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return 0; |
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} |
|
|
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static int p54_generate_band(struct ieee80211_hw *dev, |
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struct p54_channel_list *list, |
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unsigned int *chan_num, |
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enum nl80211_band band) |
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{ |
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struct p54_common *priv = dev->priv; |
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struct ieee80211_supported_band *tmp, *old; |
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unsigned int i, j; |
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int ret = -ENOMEM; |
|
|
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if ((!list->entries) || (!list->band_channel_num[band])) |
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return -EINVAL; |
|
|
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tmp = kzalloc(sizeof(*tmp), GFP_KERNEL); |
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if (!tmp) |
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goto err_out; |
|
|
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tmp->channels = kcalloc(list->band_channel_num[band], |
|
sizeof(struct ieee80211_channel), |
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GFP_KERNEL); |
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if (!tmp->channels) |
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goto err_out; |
|
|
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ret = p54_fill_band_bitrates(dev, tmp, band); |
|
if (ret) |
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goto err_out; |
|
|
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for (i = 0, j = 0; (j < list->band_channel_num[band]) && |
|
(i < list->entries); i++) { |
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struct p54_channel_entry *chan = &list->channels[i]; |
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struct ieee80211_channel *dest = &tmp->channels[j]; |
|
|
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if (chan->band != band) |
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continue; |
|
|
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if (chan->data != CHAN_HAS_ALL) { |
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wiphy_err(dev->wiphy, "%s%s%s is/are missing for " |
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"channel:%d [%d MHz].\n", |
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(chan->data & CHAN_HAS_CAL ? "" : |
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" [iqauto calibration data]"), |
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(chan->data & CHAN_HAS_LIMIT ? "" : |
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" [output power limits]"), |
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(chan->data & CHAN_HAS_CURVE ? "" : |
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" [curve data]"), |
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chan->index, chan->freq); |
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continue; |
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} |
|
|
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dest->band = chan->band; |
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dest->center_freq = chan->freq; |
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dest->max_power = chan->max_power; |
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priv->survey[*chan_num].channel = &tmp->channels[j]; |
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priv->survey[*chan_num].filled = SURVEY_INFO_NOISE_DBM | |
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SURVEY_INFO_TIME | |
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SURVEY_INFO_TIME_BUSY | |
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SURVEY_INFO_TIME_TX; |
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dest->hw_value = (*chan_num); |
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j++; |
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(*chan_num)++; |
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} |
|
|
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if (j == 0) { |
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wiphy_err(dev->wiphy, "Disabling totally damaged %d GHz band\n", |
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(band == NL80211_BAND_2GHZ) ? 2 : 5); |
|
|
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ret = -ENODATA; |
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goto err_out; |
|
} |
|
|
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tmp->n_channels = j; |
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old = priv->band_table[band]; |
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priv->band_table[band] = tmp; |
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if (old) { |
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kfree(old->channels); |
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kfree(old); |
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} |
|
|
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return 0; |
|
|
|
err_out: |
|
if (tmp) { |
|
kfree(tmp->channels); |
|
kfree(tmp); |
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} |
|
|
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return ret; |
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} |
|
|
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static struct p54_channel_entry *p54_update_channel_param(struct p54_channel_list *list, |
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u16 freq, u16 data) |
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{ |
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int i; |
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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 |
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* is right at the end of the list |
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*/ |
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for (i = list->entries; i >= 0; i--) { |
|
if (freq == list->channels[i].freq) { |
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entry = &list->channels[i]; |
|
break; |
|
} |
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} |
|
|
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if ((i < 0) && (list->entries < list->max_entries)) { |
|
/* entry does not exist yet. Initialize a new one. */ |
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int band = p54_get_band_from_freq(freq); |
|
|
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/* |
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* filter out frequencies which don't belong into |
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* any supported band. |
|
*/ |
|
if (band >= 0) { |
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i = list->entries++; |
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list->band_channel_num[band]++; |
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|
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entry = &list->channels[i]; |
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entry->freq = freq; |
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entry->band = band; |
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entry->index = ieee80211_frequency_to_channel(freq); |
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entry->max_power = 0; |
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entry->data = 0; |
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} |
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} |
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|
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if (entry) |
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entry->data |= data; |
|
|
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return entry; |
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} |
|
|
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static int p54_get_maxpower(struct p54_common *priv, void *data) |
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{ |
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switch (priv->rxhw & PDR_SYNTH_FRONTEND_MASK) { |
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case PDR_SYNTH_FRONTEND_LONGBOW: { |
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struct pda_channel_output_limit_longbow *pda = data; |
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int j; |
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u16 rawpower = 0; |
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pda = data; |
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for (j = 0; j < ARRAY_SIZE(pda->point); j++) { |
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struct pda_channel_output_limit_point_longbow *point = |
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&pda->point[j]; |
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rawpower = max_t(u16, |
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rawpower, le16_to_cpu(point->val_qpsk)); |
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rawpower = max_t(u16, |
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rawpower, le16_to_cpu(point->val_bpsk)); |
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rawpower = max_t(u16, |
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rawpower, le16_to_cpu(point->val_16qam)); |
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rawpower = max_t(u16, |
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rawpower, le16_to_cpu(point->val_64qam)); |
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} |
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/* longbow seems to use 1/16 dBm units */ |
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return rawpower / 16; |
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} |
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|
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case PDR_SYNTH_FRONTEND_DUETTE3: |
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case PDR_SYNTH_FRONTEND_DUETTE2: |
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case PDR_SYNTH_FRONTEND_FRISBEE: |
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case PDR_SYNTH_FRONTEND_XBOW: { |
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struct pda_channel_output_limit *pda = data; |
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u8 rawpower = 0; |
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rawpower = max(rawpower, pda->val_qpsk); |
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rawpower = max(rawpower, pda->val_bpsk); |
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rawpower = max(rawpower, pda->val_16qam); |
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rawpower = max(rawpower, pda->val_64qam); |
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/* raw values are in 1/4 dBm units */ |
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return rawpower / 4; |
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} |
|
|
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default: |
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return 20; |
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} |
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} |
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|
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static int p54_generate_channel_lists(struct ieee80211_hw *dev) |
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{ |
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struct p54_common *priv = dev->priv; |
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struct p54_channel_list *list; |
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unsigned int i, j, k, max_channel_num; |
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int ret = 0; |
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u16 freq; |
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|
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if ((priv->iq_autocal_len != priv->curve_data->entries) || |
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(priv->iq_autocal_len != priv->output_limit->entries)) |
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wiphy_err(dev->wiphy, |
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"Unsupported or damaged EEPROM detected. " |
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"You may not be able to use all channels.\n"); |
|
|
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max_channel_num = max_t(unsigned int, priv->output_limit->entries, |
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priv->iq_autocal_len); |
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max_channel_num = max_t(unsigned int, max_channel_num, |
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priv->curve_data->entries); |
|
|
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list = kzalloc(sizeof(*list), GFP_KERNEL); |
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if (!list) { |
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ret = -ENOMEM; |
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goto free; |
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} |
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priv->chan_num = max_channel_num; |
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priv->survey = kcalloc(max_channel_num, sizeof(struct survey_info), |
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GFP_KERNEL); |
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if (!priv->survey) { |
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ret = -ENOMEM; |
|
goto free; |
|
} |
|
|
|
list->max_entries = max_channel_num; |
|
list->channels = kcalloc(max_channel_num, |
|
sizeof(struct p54_channel_entry), |
|
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); |
|
} |
|
|
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if (i < priv->output_limit->entries) { |
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struct p54_channel_entry *tmp; |
|
|
|
void *data = (void *) ((unsigned long) i * |
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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);
|
|
|