p54: broken out edcf changes
Christian Lamparter [Wed, 15 Oct 2008 01:55:37 +0000 (03:55 +0200)]
This patch series hopefully increases p54's "longterm" stability.

Signed-off-by: Christian Lamparter <chunkeey@web.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/p54/p54.h
drivers/net/wireless/p54/p54common.c
drivers/net/wireless/p54/p54common.h

index 1da96fe..1dace10 100644 (file)
@@ -49,6 +49,13 @@ struct p54_control_hdr {
        u8 data[0];
 } __attribute__ ((packed));
 
+struct p54_edcf_queue_param {
+       __le16 aifs;
+       __le16 cwmin;
+       __le16 cwmax;
+       __le16 txop;
+} __attribute__ ((packed));
+
 #define EEPROM_READBACK_LEN 0x3fc
 
 #define ISL38XX_DEV_FIRMWARE_ADDR 0x20000
@@ -85,13 +92,13 @@ struct p54_common {
        u8 version;
        u8 rx_antenna;
        unsigned int tx_hdr_len;
-       void *cached_vdcf;
        unsigned int fw_var;
        unsigned int fw_interface;
        unsigned int output_power;
        u32 tsf_low32;
        u32 tsf_high32;
        struct ieee80211_tx_queue_stats tx_stats[8];
+       struct p54_edcf_queue_param qos_params[8];
        struct ieee80211_low_level_stats stats;
        struct timer_list stats_timer;
        struct completion stats_comp;
index 2370901..7ddb93b 100644 (file)
@@ -1114,53 +1114,41 @@ do {                                                            \
        queue.txop = cpu_to_le16(_txop);                        \
 } while(0)
 
-static void p54_init_vdcf(struct ieee80211_hw *dev)
+static int p54_set_edcf(struct ieee80211_hw *dev)
 {
        struct p54_common *priv = dev->priv;
        struct p54_control_hdr *hdr;
-       struct p54_tx_control_vdcf *vdcf;
+       struct p54_edcf *edcf;
 
-       /* all USB V1 adapters need a extra headroom */
-       hdr = (void *)priv->cached_vdcf + priv->tx_hdr_len;
+       hdr = kzalloc(priv->tx_hdr_len + sizeof(*hdr) + sizeof(*edcf),
+                       GFP_ATOMIC);
+       if (!hdr)
+               return -ENOMEM;
+
+       hdr = (void *)hdr + priv->tx_hdr_len;
        hdr->magic1 = cpu_to_le16(0x8001);
-       hdr->len = cpu_to_le16(sizeof(*vdcf));
+       hdr->len = cpu_to_le16(sizeof(*edcf));
        hdr->type = cpu_to_le16(P54_CONTROL_TYPE_DCFINIT);
-       hdr->req_id = cpu_to_le32(priv->rx_start);
-
-       vdcf = (struct p54_tx_control_vdcf *) hdr->data;
-
-       P54_SET_QUEUE(vdcf->queue[0], 0x0002, 0x0003, 0x0007, 47);
-       P54_SET_QUEUE(vdcf->queue[1], 0x0002, 0x0007, 0x000f, 94);
-       P54_SET_QUEUE(vdcf->queue[2], 0x0003, 0x000f, 0x03ff, 0);
-       P54_SET_QUEUE(vdcf->queue[3], 0x0007, 0x000f, 0x03ff, 0);
-}
-
-static void p54_set_vdcf(struct ieee80211_hw *dev)
-{
-       struct p54_common *priv = dev->priv;
-       struct p54_control_hdr *hdr;
-       struct p54_tx_control_vdcf *vdcf;
-
-       hdr = (void *)priv->cached_vdcf + priv->tx_hdr_len;
-
-       p54_assign_address(dev, NULL, hdr, sizeof(*hdr) + sizeof(*vdcf));
-
-       vdcf = (struct p54_tx_control_vdcf *) hdr->data;
-
+       hdr->retry1 = hdr->retry2 = 0;
+       edcf = (struct p54_edcf *)hdr->data;
        if (priv->use_short_slot) {
-               vdcf->slottime = 9;
-               vdcf->magic1 = 0x10;
-               vdcf->magic2 = 0x00;
+               edcf->slottime = 9;
+               edcf->sifs = 0x10;
+               edcf->eofpad = 0x00;
        } else {
-               vdcf->slottime = 20;
-               vdcf->magic1 = 0x0a;
-               vdcf->magic2 = 0x06;
+               edcf->slottime = 20;
+               edcf->sifs = 0x0a;
+               edcf->eofpad = 0x06;
        }
-
        /* (see prism54/isl_oid.h for further details) */
-       vdcf->frameburst = cpu_to_le16(0);
+       edcf->frameburst = cpu_to_le16(0);
+       edcf->round_trip_delay = cpu_to_le16(0);
+       memset(edcf->mapping, 0, sizeof(edcf->mapping));
+       memcpy(edcf->queue, priv->qos_params, sizeof(edcf->queue));
 
-       priv->tx(dev, hdr, sizeof(*hdr) + sizeof(*vdcf), 0);
+       p54_assign_address(dev, NULL, hdr, sizeof(*hdr) + sizeof(*edcf));
+       priv->tx(dev, hdr, sizeof(*hdr) + sizeof(*edcf), 1);
+       return 0;
 }
 
 static int p54_start(struct ieee80211_hw *dev)
@@ -1168,33 +1156,26 @@ static int p54_start(struct ieee80211_hw *dev)
        struct p54_common *priv = dev->priv;
        int err;
 
-       if (!priv->cached_vdcf) {
-               priv->cached_vdcf = kzalloc(sizeof(struct p54_tx_control_vdcf)+
-                       priv->tx_hdr_len + sizeof(struct p54_control_hdr),
-                       GFP_KERNEL);
-
-               if (!priv->cached_vdcf)
-                       return -ENOMEM;
-       }
-
        if (!priv->cached_stats) {
                priv->cached_stats = kzalloc(sizeof(struct p54_statistics) +
                        priv->tx_hdr_len + sizeof(struct p54_control_hdr),
                        GFP_KERNEL);
 
-               if (!priv->cached_stats) {
-                       kfree(priv->cached_vdcf);
-                       priv->cached_vdcf = NULL;
+               if (!priv->cached_stats)
                        return -ENOMEM;
-               }
        }
 
        err = priv->open(dev);
        if (!err)
                priv->mode = NL80211_IFTYPE_MONITOR;
+       P54_SET_QUEUE(priv->qos_params[0], 0x0002, 0x0003, 0x0007, 47);
+       P54_SET_QUEUE(priv->qos_params[1], 0x0002, 0x0007, 0x000f, 94);
+       P54_SET_QUEUE(priv->qos_params[2], 0x0003, 0x000f, 0x03ff, 0);
+       P54_SET_QUEUE(priv->qos_params[3], 0x0007, 0x000f, 0x03ff, 0);
+       err = p54_set_edcf(dev);
+       if (!err)
+               mod_timer(&priv->stats_timer, jiffies + HZ);
 
-       p54_init_vdcf(dev);
-       mod_timer(&priv->stats_timer, jiffies + HZ);
        return err;
 }
 
@@ -1264,7 +1245,8 @@ static int p54_config(struct ieee80211_hw *dev, u32 changed)
        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);
+       if (!ret)
+               ret = p54_set_edcf(dev);
        mutex_unlock(&priv->conf_mutex);
        return ret;
 }
@@ -1319,20 +1301,14 @@ static int p54_conf_tx(struct ieee80211_hw *dev, u16 queue,
                       const struct ieee80211_tx_queue_params *params)
 {
        struct p54_common *priv = dev->priv;
-       struct p54_tx_control_vdcf *vdcf;
-
-       vdcf = (struct p54_tx_control_vdcf *)(((struct p54_control_hdr *)
-               ((void *)priv->cached_vdcf + priv->tx_hdr_len))->data);
 
        if ((params) && !(queue > 4)) {
-               P54_SET_QUEUE(vdcf->queue[queue], params->aifs,
+               P54_SET_QUEUE(priv->qos_params[queue], params->aifs,
                        params->cw_min, params->cw_max, params->txop);
        } else
                return -EINVAL;
 
-       p54_set_vdcf(dev);
-
-       return 0;
+       return p54_set_edcf(dev);
 }
 
 static int p54_init_xbow_synth(struct ieee80211_hw *dev)
@@ -1418,7 +1394,7 @@ static void p54_bss_info_changed(struct ieee80211_hw *dev,
 
        if (changed & BSS_CHANGED_ERP_SLOT) {
                priv->use_short_slot = info->use_short_slot;
-               p54_set_vdcf(dev);
+               p54_set_edcf(dev);
        }
 }
 
@@ -1499,7 +1475,6 @@ void p54_free_common(struct ieee80211_hw *dev)
        kfree(priv->iq_autocal);
        kfree(priv->output_limit);
        kfree(priv->curve_data);
-       kfree(priv->cached_vdcf);
 }
 EXPORT_SYMBOL_GPL(p54_free_common);
 
index 22af41c..2cb3885 100644 (file)
@@ -7,8 +7,12 @@
  * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
  * Copyright (c) 2007, Christian Lamparter <chunkeey@web.de>
  *
- * Based on the islsm (softmac prism54) driver, which is:
- * Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.
+ * Based on:
+ * - the islsm (softmac prism54) driver, which is:
+ *   Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.
+ *
+ * - LMAC API interface header file for STLC4560 (lmac_longbow.h)
+ *   Copyright (C) 2007 Conexant Systems, Inc.
  *
  * 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
@@ -286,21 +290,15 @@ struct p54_tx_control_led {
        __le16 duration;
 } __attribute__ ((packed));
 
-struct p54_tx_vdcf_queues {
-       __le16 aifs;
-       __le16 cwmin;
-       __le16 cwmax;
-       __le16 txop;
-} __attribute__ ((packed));
-
-struct p54_tx_control_vdcf {
-       u8 padding;
+struct p54_edcf {
+       u8 flags;
        u8 slottime;
-       u8 magic1;
-       u8 magic2;
-       struct p54_tx_vdcf_queues queue[8];
-       u8 pad2[4];
+       u8 sifs;
+       u8 eofpad;
+       struct p54_edcf_queue_param queue[8];
+       u8 mapping[4];
        __le16 frameburst;
+       __le16 round_trip_delay;
 } __attribute__ ((packed));
 
 struct p54_statistics {