From 83cf1b6edba6bde87c8cf852b182d44b12ae7f88 Mon Sep 17 00:00:00 2001 From: Christian Lamparter Date: Sun, 11 Jan 2009 01:10:33 +0100 Subject: [PATCH] p54: prepare the eeprom parser routines for longbow This patch adds support to upload pre-calculated calibration data to the firmware. Signed-off-by: Christian Lamparter Signed-off-by: John W. Linville --- drivers/net/wireless/p54/p54.h | 13 ++- drivers/net/wireless/p54/p54common.c | 188 ++++++++++++++++++++++++++--------- drivers/net/wireless/p54/p54common.h | 19 +++- 3 files changed, 169 insertions(+), 51 deletions(-) diff --git a/drivers/net/wireless/p54/p54.h b/drivers/net/wireless/p54/p54.h index a06c2a6..ac11efd 100644 --- a/drivers/net/wireless/p54/p54.h +++ b/drivers/net/wireless/p54/p54.h @@ -87,6 +87,14 @@ struct p54_rssi_linear_approximation { s16 longbow_unk2; }; +struct p54_cal_database { + size_t entries; + size_t entry_size; + size_t offset; + size_t len; + u8 data[0]; +}; + #define EEPROM_READBACK_LEN 0x3fc #define ISL38XX_DEV_FIRMWARE_ADDR 0x20000 @@ -115,9 +123,8 @@ struct p54_common { u8 tx_diversity_mask; struct pda_iq_autocal_entry *iq_autocal; unsigned int iq_autocal_len; - struct pda_channel_output_limit *output_limit; - unsigned int output_limit_len; - struct pda_pa_curve_data *curve_data; + struct p54_cal_database *output_limit; + struct p54_cal_database *curve_data; struct p54_rssi_linear_approximation rssical_db[IEEE80211_NUM_BANDS]; unsigned int filter_flags; bool use_short_slot; diff --git a/drivers/net/wireless/p54/p54common.c b/drivers/net/wireless/p54/p54common.c index 85aff16..ec0d109 100644 --- a/drivers/net/wireless/p54/p54common.c +++ b/drivers/net/wireless/p54/p54common.c @@ -272,13 +272,19 @@ static int p54_convert_rev0(struct ieee80211_hw *dev, unsigned int i, j; void *source, *target; - priv->curve_data = kmalloc(cd_len, GFP_KERNEL); + priv->curve_data = kmalloc(sizeof(*priv->curve_data) + cd_len, + GFP_KERNEL); if (!priv->curve_data) return -ENOMEM; - memcpy(priv->curve_data, curve_data, sizeof(*curve_data)); + 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 = priv->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); @@ -318,13 +324,19 @@ static int p54_convert_rev1(struct ieee80211_hw *dev, unsigned int i, j; void *source, *target; - priv->curve_data = kmalloc(cd_len, GFP_KERNEL); + priv->curve_data = kzalloc(cd_len + sizeof(*priv->curve_data), + GFP_KERNEL); if (!priv->curve_data) return -ENOMEM; - memcpy(priv->curve_data, curve_data, sizeof(*curve_data)); + 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 = priv->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); @@ -406,6 +418,71 @@ static void p54_parse_default_country(struct ieee80211_hw *dev, } } +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) { + printk(KERN_ERR "%s: unknown output power db revision:%x\n", + wiphy_name(dev->wiphy), 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; +} + static int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len) { struct p54_common *priv = dev->priv; @@ -431,30 +508,17 @@ static int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len) 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 (data_len < 2) { - err = -EINVAL; - goto err; - } - - if (2 + entry->data[1]*sizeof(*priv->output_limit) > data_len) { - err = -EINVAL; - goto err; - } - - priv->output_limit = kmalloc(entry->data[1] * - sizeof(*priv->output_limit), GFP_KERNEL); - - if (!priv->output_limit) { - err = -ENOMEM; + if (priv->output_limit) + break; + err = p54_convert_output_limits(dev, entry->data, + data_len); + if (err) goto err; - } - - memcpy(priv->output_limit, &entry->data[2], - entry->data[1]*sizeof(*priv->output_limit)); - priv->output_limit_len = entry->data[1]; break; case PDR_PRISM_PA_CAL_CURVE_DATA: { struct pda_pa_curve_data *curve_data = @@ -506,6 +570,8 @@ static int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len) } break; case PDR_HARDWARE_PLATFORM_COMPONENT_ID: + if (data_len < 2) + break; priv->version = *(u8 *)(entry->data + 1); break; case PDR_RSSI_LINEAR_APPROXIMATION: @@ -514,6 +580,34 @@ static int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len) p54_parse_rssical(dev, entry->data, data_len, le16_to_cpu(entry->code)); break; + case PDR_RSSI_LINEAR_APPROXIMATION_CUSTOM: { + __le16 *src = (void *) entry->data; + s16 *dst = (void *) &priv->rssical_db; + int i; + + if (data_len != sizeof(priv->rssical_db)) { + err = -EINVAL; + goto err; + } + for (i = 0; i < sizeof(priv->rssical_db) / + sizeof(*src); 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: /* make it overrun */ entry_len = len; @@ -1624,8 +1718,8 @@ static int p54_scan(struct ieee80211_hw *dev, u16 mode, u16 dwell) struct p54_scan *chan; unsigned int i; void *entry; - __le16 freq = cpu_to_le16(dev->conf.channel->center_freq); int band = dev->conf.channel->band; + __le16 freq = cpu_to_le16(dev->conf.channel->center_freq); skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*chan), P54_CONTROL_TYPE_SCAN, GFP_ATOMIC); @@ -1633,7 +1727,7 @@ static int p54_scan(struct ieee80211_hw *dev, u16 mode, u16 dwell) return -ENOMEM; chan = (struct p54_scan *) skb_put(skb, sizeof(*chan)); - memset(chan->padding1, 0, sizeof(chan->padding1)); + memset(chan->scan_params, 0, sizeof(chan->scan_params)); chan->mode = cpu_to_le16(mode); chan->dwell = cpu_to_le16(dwell); @@ -1648,41 +1742,45 @@ static int p54_scan(struct ieee80211_hw *dev, u16 mode, u16 dwell) if (i == priv->iq_autocal_len) goto err; - for (i = 0; i < priv->output_limit_len; i++) { - if (priv->output_limit[i].freq != freq) + for (i = 0; i < priv->output_limit->entries; i++) { + struct pda_channel_output_limit *limits; + __le16 *entry_freq = (void *) (priv->output_limit->data + + priv->output_limit->entry_size * i); + + if (*entry_freq != freq) continue; + limits = (void *) entry_freq; chan->val_barker = 0x38; - chan->val_bpsk = chan->dup_bpsk = - priv->output_limit[i].val_bpsk; - chan->val_qpsk = chan->dup_qpsk = - priv->output_limit[i].val_qpsk; - chan->val_16qam = chan->dup_16qam = - priv->output_limit[i].val_16qam; - chan->val_64qam = chan->dup_64qam = - priv->output_limit[i].val_64qam; + chan->val_bpsk = chan->dup_bpsk = limits->val_bpsk; + chan->val_qpsk = chan->dup_qpsk = limits->val_qpsk; + chan->val_16qam = chan->dup_16qam = limits->val_16qam; + chan->val_64qam = chan->dup_64qam = limits->val_64qam; break; } - if (i == priv->output_limit_len) + if (i == priv->output_limit->entries) goto err; - entry = priv->curve_data->data; - for (i = 0; i < priv->curve_data->channels; i++) { + entry = (void *)(priv->curve_data->data + priv->curve_data->offset); + for (i = 0; i < priv->curve_data->entries; i++) { + struct pda_pa_curve_data *curve_data; if (*((__le16 *)entry) != freq) { - entry += sizeof(__le16); - entry += sizeof(struct p54_pa_curve_data_sample) * - priv->curve_data->points_per_channel; + entry += priv->curve_data->entry_size; continue; } entry += sizeof(__le16); chan->pa_points_per_curve = 8; memset(chan->curve_data, 0, sizeof(*chan->curve_data)); + curve_data = (void *) priv->curve_data->data; + memcpy(chan->curve_data, entry, sizeof(struct p54_pa_curve_data_sample) * - min((u8)8, priv->curve_data->points_per_channel)); + min_t(u8, 8, curve_data->points_per_channel)); break; } + if (i == priv->curve_data->entries) + goto err; if (priv->fw_var < 0x500) { chan->v1_rssi.mul = cpu_to_le16(priv->rssical_db[band].mul); diff --git a/drivers/net/wireless/p54/p54common.h b/drivers/net/wireless/p54/p54common.h index bcfb75a..d9aa255 100644 --- a/drivers/net/wireless/p54/p54common.h +++ b/drivers/net/wireless/p54/p54common.h @@ -186,6 +186,14 @@ struct pda_country { u8 flags; } __attribute__ ((packed)); +struct pda_custom_wrapper { + __le16 entries; + __le16 entry_size; + __le16 offset; + __le16 len; + u8 data[0]; +} __attribute__ ((packed)); + /* * this defines the PDR codes used to build PDAs as defined in document * number 553155. The current implementation mirrors version 1.1 of the @@ -231,8 +239,13 @@ struct pda_country { /* reserved range (0x2000 - 0x7fff) */ /* customer range (0x8000 - 0xffff) */ -#define PDR_BASEBAND_REGISTERS 0x8000 -#define PDR_PER_CHANNEL_BASEBAND_REGISTERS 0x8001 +#define PDR_BASEBAND_REGISTERS 0x8000 +#define PDR_PER_CHANNEL_BASEBAND_REGISTERS 0x8001 + +/* used by our modificated eeprom image */ +#define PDR_RSSI_LINEAR_APPROXIMATION_CUSTOM 0xDEAD +#define PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS_CUSTOM 0xBEEF +#define PDR_PRISM_PA_CAL_CURVE_DATA_CUSTOM 0xB05D /* PDR definitions for default country & country list */ #define PDR_COUNTRY_CERT_CODE 0x80 @@ -434,7 +447,7 @@ struct p54_setup_mac { struct p54_scan { __le16 mode; __le16 dwell; - u8 padding1[20]; + u8 scan_params[20]; struct pda_iq_autocal_entry iq_autocal; u8 pa_points_per_curve; u8 val_barker; -- 2.7.4