// SPDX-License-Identifier: GPL-2.0-only
|
/*
|
* 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).
|
*/
|
|
#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 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 = kcalloc(list->band_channel_num[band],
|
sizeof(struct ieee80211_channel),
|
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 = kcalloc(max_channel_num, sizeof(struct survey_info),
|
GFP_KERNEL);
|
if (!priv->survey) {
|
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);
|
}
|
|
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);
|
