-
/*
* Common code for mac80211 Prism54 drivers
*
* Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
* Copyright (c) 2007, 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.
priv->headroom = desc->headroom;
priv->tailroom = desc->tailroom;
if (le32_to_cpu(bootrec->len) == 11)
- priv->rx_mtu = le16_to_cpu(bootrec->rx_mtu);
+ priv->rx_mtu = le16_to_cpu(desc->rx_mtu);
else
priv->rx_mtu = (size_t)
0x620 - priv->tx_hdr_len;
void *tmp;
int err;
u8 *end = (u8 *)eeprom + len;
- u16 synth;
- DECLARE_MAC_BUF(mac);
+ u16 synth = 0;
wrap = (struct eeprom_pda_wrap *) eeprom;
entry = (void *)wrap->data + le16_to_cpu(wrap->len);
entry = (void *)entry + (entry_len + 1)*2;
}
- if (!priv->iq_autocal || !priv->output_limit || !priv->curve_data) {
+ if (!synth || !priv->iq_autocal || !priv->output_limit ||
+ !priv->curve_data) {
printk(KERN_ERR "p54: not all required entries found in eeprom!\n");
err = -EINVAL;
goto err;
SET_IEEE80211_PERM_ADDR(dev, perm_addr);
}
- printk(KERN_INFO "%s: hwaddr %s, MAC:isl38%02x RF:%s\n",
+ printk(KERN_INFO "%s: hwaddr %pM, MAC:isl38%02x RF:%s\n",
wiphy_name(dev->wiphy),
- print_mac(mac, dev->wiphy->perm_addr),
+ dev->wiphy->perm_addr,
priv->version, p54_rf_chips[priv->rxhw]);
return 0;
u32 freed = 0;
u32 last_addr = priv->rx_start;
unsigned long flags;
+ int count, idx;
spin_lock_irqsave(&priv->tx_queue.lock, flags);
while (entry != (struct sk_buff *)&priv->tx_queue) {
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(entry);
- range = (void *)info->driver_data;
+ range = (void *)info->rate_driver_data;
if (range->start_addr == addr) {
struct p54_control_hdr *entry_hdr;
struct p54_tx_control_allocdata *entry_data;
struct memrecord *mr;
ni = IEEE80211_SKB_CB(entry->next);
- mr = (struct memrecord *)ni->driver_data;
+ mr = (struct memrecord *)ni->rate_driver_data;
freed = mr->start_addr - last_addr;
} else
freed = priv->rx_end - last_addr;
__skb_unlink(entry, &priv->tx_queue);
spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
- memset(&info->status, 0, sizeof(info->status));
+ /*
+ * Clear manually, ieee80211_tx_info_clear_status would
+ * clear the counts too and we need them.
+ */
+ memset(&info->status.ampdu_ack_len, 0,
+ sizeof(struct ieee80211_tx_info) -
+ offsetof(struct ieee80211_tx_info, status.ampdu_ack_len));
+ BUILD_BUG_ON(offsetof(struct ieee80211_tx_info,
+ status.ampdu_ack_len) != 23);
+
entry_hdr = (struct p54_control_hdr *) entry->data;
entry_data = (struct p54_tx_control_allocdata *) entry_hdr->data;
if ((entry_hdr->magic1 & cpu_to_le16(0x4000)) != 0)
pad = entry_data->align[0];
- priv->tx_stats[entry_data->hw_queue].len--;
- if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
- if (!(payload->status & 0x01))
- info->flags |= IEEE80211_TX_STAT_ACK;
- else
- info->status.excessive_retries = 1;
+ /* walk through the rates array and adjust the counts */
+ count = payload->retries;
+ for (idx = 0; idx < 4; idx++) {
+ if (count >= info->status.rates[idx].count) {
+ count -= info->status.rates[idx].count;
+ } else if (count > 0) {
+ info->status.rates[idx].count = count;
+ count = 0;
+ } else {
+ info->status.rates[idx].idx = -1;
+ info->status.rates[idx].count = 0;
+ }
}
- info->status.retry_count = payload->retries - 1;
+
+ priv->tx_stats[entry_data->hw_queue].len--;
+ if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) &&
+ !(payload->status & 0x01))
+ info->flags |= IEEE80211_TX_STAT_ACK;
info->status.ack_signal = p54_rssi_to_dbm(dev,
le16_to_cpu(payload->ack_rssi));
skb_pull(entry, sizeof(*hdr) + pad + sizeof(*entry_data));
while (left--) {
u32 hole_size;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(entry);
- struct memrecord *range = (void *)info->driver_data;
+ struct memrecord *range = (void *)info->rate_driver_data;
hole_size = range->start_addr - last_addr;
if (!target_skb && hole_size >= len) {
target_skb = entry->prev;
largest_hole = max(largest_hole, priv->rx_end - last_addr - len);
if (!skb_queue_empty(&priv->tx_queue)) {
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(target_skb);
- struct memrecord *range = (void *)info->driver_data;
+ struct memrecord *range = (void *)info->rate_driver_data;
target_addr = range->end_addr;
}
} else
if (skb) {
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
- struct memrecord *range = (void *)info->driver_data;
+ struct memrecord *range = (void *)info->rate_driver_data;
range->start_addr = target_addr;
range->end_addr = target_addr + len;
__skb_queue_after(&priv->tx_queue, target_skb, skb);
struct ieee80211_tx_queue_stats *current_queue;
struct p54_common *priv = dev->priv;
struct p54_control_hdr *hdr;
- struct ieee80211_hdr *ieee80211hdr = (struct ieee80211_hdr *)skb->data;
struct p54_tx_control_allocdata *txhdr;
size_t padding, len;
+ int i, j, ridx;
u8 rate;
u8 cts_rate = 0x20;
+ u8 rc_flags;
+ u8 calculated_tries[4];
+ u8 nrates = 0, nremaining = 8;
current_queue = &priv->tx_stats[skb_get_queue_mapping(skb) + 4];
if (unlikely(current_queue->len > current_queue->limit))
hdr->magic1 = cpu_to_le16(0x0010);
hdr->len = cpu_to_le16(len);
hdr->type = (info->flags & IEEE80211_TX_CTL_NO_ACK) ? 0 : cpu_to_le16(1);
- hdr->retry1 = hdr->retry2 = info->control.retry_limit;
+ hdr->retry1 = info->control.rates[0].count;
- /* TODO: add support for alternate retry TX rates */
- rate = ieee80211_get_tx_rate(dev, info)->hw_value;
- if (info->flags & IEEE80211_TX_CTL_SHORT_PREAMBLE) {
- rate |= 0x10;
- cts_rate |= 0x10;
+ /*
+ * we register the rates in perfect order, and
+ * RTS/CTS won't happen on 5 GHz
+ */
+ cts_rate = info->control.rts_cts_rate_idx;
+
+ memset(&txhdr->rateset, 0, sizeof(txhdr->rateset));
+
+ /* see how many rates got used */
+ for (i = 0; i < 4; i++) {
+ if (info->control.rates[i].idx < 0)
+ break;
+ nrates++;
}
- if (info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) {
- rate |= 0x40;
- cts_rate |= ieee80211_get_rts_cts_rate(dev, info)->hw_value;
- } else if (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT) {
- rate |= 0x20;
- cts_rate |= ieee80211_get_rts_cts_rate(dev, info)->hw_value;
+
+ /* limit tries to 8/nrates per rate */
+ for (i = 0; i < nrates; i++) {
+ /*
+ * The magic expression here is equivalent to 8/nrates for
+ * all values that matter, but avoids division and jumps.
+ * Note that nrates can only take the values 1 through 4.
+ */
+ calculated_tries[i] = min_t(int, ((15 >> nrates) | 1) + 1,
+ info->control.rates[i].count);
+ nremaining -= calculated_tries[i];
}
- memset(txhdr->rateset, rate, 8);
+
+ /* if there are tries left, distribute from back to front */
+ for (i = nrates - 1; nremaining > 0 && i >= 0; i--) {
+ int tmp = info->control.rates[i].count - calculated_tries[i];
+
+ if (tmp <= 0)
+ continue;
+ /* RC requested more tries at this rate */
+
+ tmp = min_t(int, tmp, nremaining);
+ calculated_tries[i] += tmp;
+ nremaining -= tmp;
+ }
+
+ ridx = 0;
+ for (i = 0; i < nrates && ridx < 8; i++) {
+ /* we register the rates in perfect order */
+ rate = info->control.rates[i].idx;
+ if (info->band == IEEE80211_BAND_5GHZ)
+ rate += 4;
+
+ /* store the count we actually calculated for TX status */
+ info->control.rates[i].count = calculated_tries[i];
+
+ rc_flags = info->control.rates[i].flags;
+ if (rc_flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) {
+ rate |= 0x10;
+ cts_rate |= 0x10;
+ }
+ if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS)
+ rate |= 0x40;
+ else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
+ rate |= 0x20;
+ for (j = 0; j < calculated_tries[i] && ridx < 8; j++) {
+ txhdr->rateset[ridx] = rate;
+ ridx++;
+ }
+ }
+ hdr->retry2 = ridx;
+
txhdr->key_type = 0;
txhdr->key_len = 0;
txhdr->hw_queue = skb_get_queue_mapping(skb) + 4;
if (padding)
txhdr->align[0] = padding;
- /* FIXME: The sequence that follows is needed for this driver to
- * work with mac80211 since "mac80211: fix TX sequence numbers".
- * As with the temporary code in rt2x00, changes will be needed
- * to get proper sequence numbers on beacons. In addition, this
- * patch places the sequence number in the hardware state, which
- * limits us to a single virtual state.
- */
- if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
- if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
- priv->seqno += 0x10;
- ieee80211hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
- ieee80211hdr->seq_ctrl |= cpu_to_le16(priv->seqno);
- }
/* modifies skb->cb and with it info, so must be last! */
p54_assign_address(dev, skb, hdr, skb->len);
memset(filter->bssid, ~0, ETH_ALEN);
else
memcpy(filter->bssid, bssid, ETH_ALEN);
-
filter->rx_antenna = priv->rx_antenna;
-
if (priv->fw_var < 0x500) {
data_len = P54_TX_CONTROL_FILTER_V1_LEN;
- filter->v1.basic_rate_mask = cpu_to_le32(0x15F);
+ filter->v1.basic_rate_mask = cpu_to_le32(0x15f);
filter->v1.rx_addr = cpu_to_le32(priv->rx_end);
filter->v1.max_rx = cpu_to_le16(priv->rx_mtu);
filter->v1.rxhw = cpu_to_le16(priv->rxhw);
filter->v2.rxhw = cpu_to_le16(priv->rxhw);
filter->v2.timer = cpu_to_le16(1000);
}
-
hdr->len = cpu_to_le16(data_len);
p54_assign_address(dev, NULL, hdr, sizeof(*hdr) + data_len);
priv->tx(dev, hdr, sizeof(*hdr) + data_len, 1);
vdcf = (struct p54_tx_control_vdcf *) hdr->data;
- if (dev->conf.flags & IEEE80211_CONF_SHORT_SLOT_TIME) {
+ if (priv->use_short_slot) {
vdcf->slottime = 9;
vdcf->magic1 = 0x10;
vdcf->magic2 = 0x00;
priv->mode = NL80211_IFTYPE_MONITOR;
p54_init_vdcf(dev);
-
mod_timer(&priv->stats_timer, jiffies + HZ);
return err;
}
p54_set_filter(dev, 0, NULL);
}
-static int p54_config(struct ieee80211_hw *dev, struct ieee80211_conf *conf)
+static int p54_config(struct ieee80211_hw *dev, u32 changed)
{
int ret;
struct p54_common *priv = dev->priv;
+ struct ieee80211_conf *conf = &dev->conf;
mutex_lock(&priv->conf_mutex);
- priv->rx_antenna = (conf->antenna_sel_rx == 0) ?
- 2 : conf->antenna_sel_tx - 1;
+ priv->rx_antenna = 2; /* automatic */
priv->output_power = conf->power_level << 2;
ret = p54_set_freq(dev, cpu_to_le16(conf->channel->center_freq));
p54_set_vdcf(dev);
return 0;
}
+static void p54_bss_info_changed(struct ieee80211_hw *dev,
+ struct ieee80211_vif *vif,
+ struct ieee80211_bss_conf *info,
+ u32 changed)
+{
+ struct p54_common *priv = dev->priv;
+
+ if (changed & BSS_CHANGED_ERP_SLOT) {
+ priv->use_short_slot = info->use_short_slot;
+ p54_set_vdcf(dev);
+ }
+}
+
static const struct ieee80211_ops p54_ops = {
.tx = p54_tx,
.start = p54_start,
.remove_interface = p54_remove_interface,
.config = p54_config,
.config_interface = p54_config_interface,
+ .bss_info_changed = p54_bss_info_changed,
.configure_filter = p54_configure_filter,
.conf_tx = p54_conf_tx,
.get_stats = p54_get_stats,
IEEE80211_HW_SIGNAL_DBM |
IEEE80211_HW_NOISE_DBM;
+ /*
+ * XXX: when this driver gets support for any mode that
+ * requires beacons (AP, MESH, IBSS) then it must
+ * implement IEEE80211_TX_CTL_ASSIGN_SEQ.
+ */
dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
dev->channel_change_time = 1000; /* TODO: find actual value */
-
priv->tx_stats[0].limit = 1;
priv->tx_stats[1].limit = 1;
priv->tx_stats[2].limit = 1;
priv->tx_stats[4].limit = 5;
dev->queues = 1;
priv->noise = -94;
+ /*
+ * We support at most 8 tries no matter which rate they're at,
+ * we cannot support max_rates * max_rate_tries as we set it
+ * here, but setting it correctly to 4/2 or so would limit us
+ * artificially if the RC algorithm wants just two rates, so
+ * let's say 4/7, we'll redistribute it at TX time, see the
+ * comments there.
+ */
+ dev->max_rates = 4;
+ dev->max_rate_tries = 7;
dev->extra_tx_headroom = sizeof(struct p54_control_hdr) + 4 +
sizeof(struct p54_tx_control_allocdata);
projects / linux-2.6-omap-h63xx.git / blobdiff