* Copyright (c) 2000-2005 ZyDAS Technology Corporation
* Copyright (c) 2007-2009 Atheros Communications, Inc.
* Copyright 2009 Johannes Berg <johannes@sipsolutions.net>
- * Copyright 2009, 2010 Christian Lamparter <chunkeey@googlemail.com>
+ * Copyright 2009-2011 Christian Lamparter <chunkeey@googlemail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
#include "printf.h"
#include "rf.h"
#include "linux/ieee80211.h"
-#include "rom.h"
static void wlan_txunstuck(unsigned int queue)
{
}
/* generate _aggregated_ tx_status for the host */
-static void wlan_tx_complete(struct carl9170_tx_superframe *super,
- bool txs)
+void wlan_tx_complete(struct carl9170_tx_superframe *super,
+ bool txs)
{
struct carl9170_tx_status *status;
*/
status->cookie = super->s.cookie;
status->queue = super->s.queue;
+ super->s.cookie = 0;
/*
* This field holds the number of tries of the rate in
static inline u16 get_tid(struct ieee80211_hdr *hdr)
{
- return (ieee80211_get_qos_ctl(hdr))[0] & IEEE80211_QOS_CTL_TID_MASK;
+ return (ieee80211_get_qos_ctl(hdr))[0] & IEEE80211_QOS_CTL_TID_MASK;
}
/* This function will only work on uint32_t-aligned pointers! */
return !((d0[0] ^ d1[0]) | (unsigned short)(d0[1] ^ d1[1]));
}
-#ifdef CONFIG_CARL9170FW_TX_AMPDU
+/* This function will only work on uint32_t-aligned pointers! */
+static bool same_hdr(const void *_d0, const void *_d1)
+{
+ const uint32_t *d0 = _d0;
+ const uint32_t *d1 = _d1;
+
+ /* BUG_ON((unsigned long)d0 & 3 || (unsigned long)d1 & 3)) */
+ return !((d0[0] ^ d1[0]) | /* FC + DU */
+ (d0[1] ^ d1[1]) | /* addr1 */
+ (d0[2] ^ d1[2]) | (d0[3] ^ d1[3]) | /* addr2 + addr3 */
+ (d0[4] ^ d1[4])); /* addr3 */
+}
+
+static inline bool same_aggr(struct ieee80211_hdr *a, struct ieee80211_hdr *b)
+{
+ return (get_tid(a) == get_tid(b)) || same_hdr(a, b);
+}
+
+static void wlan_tx_ampdu_end(unsigned int qidx)
+{
+ struct carl9170_tx_superframe *ht_prev = fw.wlan.ampdu_prev[qidx];
+
+ fw.wlan.ampdu_prev[qidx] = NULL;
+ if (ht_prev)
+ ht_prev->f.hdr.mac.ba_end = 1;
+}
+
static void wlan_tx_ampdu(struct carl9170_tx_superframe *super)
{
unsigned int qidx = super->s.queue;
struct carl9170_tx_superframe *ht_prev = fw.wlan.ampdu_prev[qidx];
if (!super->f.hdr.mac.ampdu) {
- fw.wlan.ampdu_prev[qidx] = NULL;
-
- if (ht_prev)
- ht_prev->f.hdr.mac.ba_end = 1;
+ wlan_tx_ampdu_end(qidx);
} else {
fw.wlan.ampdu_prev[qidx] = super;
- if (ht_prev && (get_tid(&super->f.data.i3e) != get_tid(&ht_prev->f.data.i3e) ||
- !compare_ether_address(super->f.data.i3e.addr1, ht_prev->f.data.i3e.addr1)))
+ if (ht_prev &&
+ !same_aggr(&super->f.data.i3e, &ht_prev->f.data.i3e))
ht_prev->f.hdr.mac.ba_end = 1;
else
super->f.hdr.mac.ba_end = 0;
}
}
-#endif /* CONFIG_CARL9170FW_TX_AMPDU */
/* for all tries */
static void __wlan_tx(struct dma_desc *desc)
read_tsf(tsf);
}
-#ifdef CONFIG_CARL9170FW_TX_AMPDU
wlan_tx_ampdu(super);
-#endif /* CONFIG_CARL9170FW_TX_AMPDU */
#if (defined CONFIG_CARL9170FW_LOOPBACK) || (defined CONFIG_CARL9170FW_DISCARD)
wlan_tx_complete(super, true);
# endif
#else /* CONFIG_CARL9170FW_LOOPBACK */
-# if ((defined CONFIG_CARL9170FW_DEBUG) && (defined CONFIG_CARL9170FW_PSM))
+# ifdef CONFIG_CARL9170FW_DEBUG
BUG_ON(fw.phy.psm.state != CARL9170_PSM_WAKE);
-# endif /* CONFIG_CARL9170FW_DEBUG && CONFIG_CARL9170FW_PSM */
+# endif /* CONFIG_CARL9170FW_DEBUG */
/* insert desc into the right queue */
dma_put(&fw.wlan.tx_queue[super->s.queue], desc);
#endif /* CONFIG_CARL9170FW_LOOPBACK */
}
+static void wlan_assign_seq(struct ieee80211_hdr *hdr, unsigned int vif)
+{
+ hdr->seq_ctrl &= cpu_to_le16(~IEEE80211_SCTL_SEQ);
+ hdr->seq_ctrl |= cpu_to_le16(fw.wlan.sequence[vif]);
+
+ if (!(hdr->seq_ctrl & cpu_to_le16(IEEE80211_SCTL_FRAG)))
+ fw.wlan.sequence[vif] += 0x10;
+}
+
/* prepares frame for the first transmission */
static void _wlan_tx(struct dma_desc *desc)
{
struct carl9170_tx_superframe *super = get_super(desc);
+ if (unlikely(super->s.assign_seq))
+ wlan_assign_seq(&super->f.data.i3e, super->s.vif_id);
+
if (unlikely(super->s.ampdu_commit_density)) {
set(AR9170_MAC_REG_AMPDU_DENSITY,
MOD_VAL(AR9170_MAC_AMPDU_DENSITY,
static bool wlan_tx_status(struct dma_queue *queue,
struct dma_desc *desc)
{
- struct ar9170_tx_frame *frame = DESC_PAYLOAD(desc);
struct carl9170_tx_superframe *super = get_super(desc);
- struct ieee80211_hdr *hdr = &super->f.data.i3e;
unsigned int qidx = super->s.queue;
- bool txfail, success;
+ bool txfail = false, success;
success = true;
/* update hangcheck */
- fw.wlan.last_tx_desc_num[qidx] = 0;
+ fw.wlan.last_super_num[qidx] = 0;
if (!!(desc->ctrl & AR9170_CTRL_FAIL)) {
txfail = !!(desc->ctrl & AR9170_CTRL_TXFAIL);
* order.
*/
- if (!frame->hdr.mac.ampdu) {
+ if (!super->f.hdr.mac.ampdu) {
/*
* 802.11 - 7.1.3.1.5.
* set "Retry Field" for consecutive attempts
* Note: For AMPDU see:
* 802.11n 9.9.1.6 "Retransmit Procedures"
*/
-
- hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_RETRY);
+ super->f.data.i3e.frame_control |=
+ cpu_to_le16(IEEE80211_FCTL_RETRY);
}
if (txfail) {
*/
dma_unlink_head(queue);
-#ifdef CONFIG_CARL9170FW_DELAYED_TX
dma_put(&fw.wlan.tx_retry, desc);
-#else
- __wlan_tx(desc);
-#endif /* CONFIG_CARL9170FW_DELAYED_TX */
return true;
}
} else {
unhide_super(desc);
-#ifdef CONFIG_CARL9170FW_HANDLE_BACK_REQ
- if (unlikely(super == (void *) &dma_mem.reserved.ba)) {
- fw.wlan.ba_desc = desc;
- fw.wlan.ba_desc_available = 1;
+ if (unlikely(super == fw.wlan.fw_desc_data)) {
+ fw.wlan.fw_desc = desc;
+ fw.wlan.fw_desc_available = 1;
+
+ if (fw.wlan.fw_desc_callback)
+ fw.wlan.fw_desc_callback(super, success);
+
return true;
}
-#endif /* CONFIG_CARL9170FW_HANDLE_BACK_REQ */
-
- wlan_tx_complete(super, success);
#ifdef CONFIG_CARL9170FW_CAB_QUEUE
if (unlikely(super->s.cab))
fw.wlan.cab_queue_len[super->s.vif_id]--;
#endif /* CONFIG_CARL9170FW_CAB_QUEUE */
+ wlan_tx_complete(super, success);
+
/* recycle freed descriptors */
dma_reclaim(&fw.pta.down_queue, desc);
down_trigger();
static void handle_tx_completion(void)
{
struct dma_desc *desc;
- unsigned int i;
+ int i;
- for (i = 0; i < __AR9170_NUM_TX_QUEUES; i++) {
+ for (i = AR9170_TXQ_SPECIAL; i >= AR9170_TXQ0; i--) {
__while_desc_bits(desc, &fw.wlan.tx_queue[i], AR9170_OWN_BITS_SW) {
if (!wlan_tx_status(&fw.wlan.tx_queue[i], desc)) {
/* termination requested. */
}
}
-#ifdef CONFIG_CARL9170FW_DELAYED_TX
for_each_desc(desc, &fw.wlan.tx_retry)
__wlan_tx(desc);
- for_each_desc(desc, &fw.wlan.tx_delay[i])
- _wlan_tx(desc);
-#endif /* CONFIG_CARL9170FW_DELAYED_TX */
- wlan_trigger(BIT(i));
+ wlan_tx_ampdu_end(i);
+ if (!queue_empty(&fw.wlan.tx_queue[i]))
+ wlan_trigger(BIT(i));
}
}
}
#endif /* CONFIG_CARL9170FW_CAB_QUEUE */
-#ifdef CONFIG_CARL9170FW_DELAYED_TX
- if (!queue_empty(&fw.wlan.tx_queue[super->s.queue])) {
- dma_put(&fw.wlan.tx_delay[super->s.queue], desc);
- return;
- }
-#endif /* CONFIG_CARL9170FW_DELAYED_TX */
-
_wlan_tx(desc);
wlan_trigger(BIT(super->s.queue));
}
-#ifdef CONFIG_CARL9170FW_HANDLE_BACK_REQ
+static void wlan_tx_fw(struct carl9170_tx_superdesc *super, fw_desc_callback_t cb)
+{
+ if (!fw.wlan.fw_desc_available)
+ return;
+
+ fw.wlan.fw_desc_available = 0;
+
+ /* Format BlockAck */
+ fw.wlan.fw_desc->ctrl = AR9170_CTRL_FS_BIT | AR9170_CTRL_LS_BIT;
+ fw.wlan.fw_desc->status = AR9170_OWN_BITS_SW;
+
+ fw.wlan.fw_desc->totalLen = fw.wlan.fw_desc->dataSize = super->len;
+ fw.wlan.fw_desc_data = fw.wlan.fw_desc->dataAddr = super;
+ fw.wlan.fw_desc->nextAddr = fw.wlan.fw_desc->lastAddr =
+ fw.wlan.fw_desc;
+ fw.wlan.fw_desc_callback = cb;
+ wlan_tx(fw.wlan.fw_desc);
+}
+
static void wlan_send_buffered_ba(void)
{
struct carl9170_tx_ba_superframe *baf = &dma_mem.reserved.ba.ba;
return;
/* there's no point to continue when the ba_desc is not available. */
- if (!fw.wlan.ba_desc_available)
+ if (!fw.wlan.fw_desc_available)
return;
- ctx = &fw.wlan.ba_cache[fw.wlan.ba_head_idx % CONFIG_CARL9170FW_BACK_REQS_NUM];
+ ctx = &fw.wlan.ba_cache[fw.wlan.ba_head_idx];
fw.wlan.ba_head_idx++;
-
- /* Format BlockAck */
- fw.wlan.ba_desc->status = 0;
- fw.wlan.ba_desc->ctrl = AR9170_CTRL_FS_BIT | AR9170_CTRL_LS_BIT;
- fw.wlan.ba_desc_available = 0;
- fw.wlan.ba_desc->nextAddr = fw.wlan.ba_desc->lastAddr =
- fw.wlan.ba_desc;
-
- baf->s.len = fw.wlan.ba_desc->totalLen = fw.wlan.ba_desc->dataSize =
- sizeof(struct carl9170_tx_superdesc) +
- sizeof(struct ar9170_tx_hwdesc) +
- sizeof(struct ieee80211_ba);
-
- baf->s.ri[0].tries = 3;
- baf->s.queue = 0;
+ fw.wlan.ba_head_idx %= CONFIG_CARL9170FW_BACK_REQS_NUM;
+
+ baf->s.len = sizeof(struct carl9170_tx_superdesc) +
+ sizeof(struct ar9170_tx_hwdesc) +
+ sizeof(struct ieee80211_ba);
+ baf->s.ri[0].tries = 1;
+ baf->s.cookie = 0;
+ baf->s.queue = AR9170_TXQ_VO;
baf->f.hdr.length = sizeof(struct ieee80211_ba) + FCS_LEN;
/* HW Duration / Backoff */
baf->f.hdr.phy.tx_power = 29; /* 14.5 dBm */
/* format outgoing BA */
- ba->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK);
+ ba->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_NULLFUNC);
ba->duration = cpu_to_le16(0);
memcpy(ba->ta, ctx->ta, 6);
memcpy(ba->ra, ctx->ra, 6);
*/
ba->control = ctx->control | cpu_to_le16(1);
ba->start_seq_num = ctx->start_seq_num;
-
- wlan_tx(fw.wlan.ba_desc);
+ wlan_tx_fw(&baf->s, NULL);
}
static struct carl9170_bar_ctx *wlan_get_bar_cache_buffer(void)
{
struct carl9170_bar_ctx *tmp;
- /* expire oldest entry, if we ran out of ba_ctx' */
- if (fw.wlan.ba_head_idx + CONFIG_CARL9170FW_BACK_REQS_NUM < fw.wlan.ba_tail_idx)
- fw.wlan.ba_head_idx++;
-
- tmp = &fw.wlan.ba_cache[fw.wlan.ba_tail_idx % CONFIG_CARL9170FW_BACK_REQS_NUM];
+ tmp = &fw.wlan.ba_cache[fw.wlan.ba_tail_idx];
fw.wlan.ba_tail_idx++;
+ fw.wlan.ba_tail_idx %= CONFIG_CARL9170FW_BACK_REQS_NUM;
return tmp;
}
ctx->phy = cpu_to_le32(0x2cc301);
}
}
-#endif /* CONFIG_CARL9170FW_HANDLE_BACK_REQ */
static void wlan_check_rx_overrun(void)
{
uint32_t overruns, total;
- fw.wlan.rx_total += total = get(AR9170_MAC_REG_RX_TOTAL);
- fw.wlan.rx_overruns += overruns = get(AR9170_MAC_REG_RX_OVERRUN);
+ fw.tally.rx_total += total = get(AR9170_MAC_REG_RX_TOTAL);
+ fw.tally.rx_overrun += overruns = get(AR9170_MAC_REG_RX_OVERRUN);
if (unlikely(overruns)) {
if (overruns == total) {
DBG("RX Overrun");
}
#ifdef CONFIG_CARL9170FW_WOL
-static void wlan_rx_wol(struct ieee80211_hdr *hdr, unsigned int len)
+void wlan_prepare_wol(void)
+{
+ /* set MAC filter */
+ memcpy((void *)AR9170_MAC_REG_MAC_ADDR_L, fw.wlan.wol.cmd.mac, 6);
+ memcpy((void *)AR9170_MAC_REG_BSSID_L, fw.wlan.wol.cmd.bssid, 6);
+ set(AR9170_MAC_REG_RX_CONTROL, AR9170_MAC_RX_CTRL_DEAGG);
+
+ /* set filter policy to: discard everything */
+ fw.wlan.rx_filter = CARL9170_RX_FILTER_EVERYTHING;
+
+ /* reenable rx dma */
+ wlan_trigger(AR9170_DMA_TRIGGER_RXQ);
+
+ /* initialize the last_beacon timer */
+ fw.wlan.wol.last_null = fw.wlan.wol.last_beacon = get_clock_counter();
+}
+
+#ifdef CONFIG_CARL9170FW_WOL_NL80211_TRIGGERS
+static bool wlan_rx_wol_magic_packet(struct ieee80211_hdr *hdr, unsigned int len)
{
const unsigned char *data, *end, *mac;
unsigned int found = 0;
* for MAGIC patterns!
*/
- /*
- * TODO:
- * Currently, the MAGIC MAC Address is fixed to the EEPROM default.
- * It's possible to make it fully configurable, e.g:
- *
- * mac = (const unsigned char *) AR9170_MAC_REG_MAC_ADDR_L;
- * But this will clash with the driver's suspend path, because it
- * needs to reset the registers.
- */
- mac = rom.sys.mac_address;
+ mac = (const unsigned char *) AR9170_MAC_REG_MAC_ADDR_L;
data = (u8 *)((unsigned long)hdr + ieee80211_hdrlen(hdr->frame_control));
end = (u8 *)((unsigned long)hdr + len);
found = 0;
}
- if (found == (6 + 16 * 6)) {
- fw.suspend_mode = CARL9170_AWAKE_HOST;
- return;
- }
+ if (found == (6 + 16 * 6))
+ return true;
data++;
}
- return;
+ return false;
+}
+
+static void wlan_wol_connect_callback(void __unused *dummy, bool success)
+{
+ if (success)
+ fw.wlan.wol.lost_null = 0;
+ else
+ fw.wlan.wol.lost_null++;
+}
+
+static void wlan_wol_connection_monitor(void)
+{
+ struct carl9170_tx_null_superframe *nullf = &dma_mem.reserved.cmd.null;
+ struct ieee80211_hdr *null = (struct ieee80211_hdr *) &nullf->f.null;
+
+ if (!fw.wlan.fw_desc_available)
+ return;
+
+ memset(nullf, 0, sizeof(*nullf));
+
+ nullf->s.len = sizeof(struct carl9170_tx_superdesc) +
+ sizeof(struct ar9170_tx_hwdesc) +
+ sizeof(struct ieee80211_hdr);
+ nullf->s.ri[0].tries = 3;
+ nullf->s.assign_seq = true;
+ nullf->s.queue = AR9170_TXQ_VO;
+ nullf->f.hdr.length = sizeof(struct ieee80211_hdr) + FCS_LEN;
+
+ nullf->f.hdr.mac.backoff = 1;
+ nullf->f.hdr.mac.hw_duration = 1;
+ nullf->f.hdr.mac.erp_prot = AR9170_TX_MAC_PROT_RTS;
+
+ nullf->f.hdr.phy.modulation = AR9170_TX_PHY_MOD_OFDM;
+ nullf->f.hdr.phy.bandwidth = AR9170_TX_PHY_BW_20MHZ;
+ nullf->f.hdr.phy.chains = AR9170_TX_PHY_TXCHAIN_2;
+ nullf->f.hdr.phy.tx_power = 29; /* 14.5 dBm */
+ nullf->f.hdr.phy.mcs = AR9170_TXRX_PHY_RATE_OFDM_6M;
+
+ /* format outgoing nullfunc */
+ null->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
+ IEEE80211_STYPE_NULLFUNC | IEEE80211_FCTL_TODS);
+
+ memcpy(null->addr1, fw.wlan.wol.cmd.bssid, 6);
+ memcpy(null->addr2, fw.wlan.wol.cmd.mac, 6);
+ memcpy(null->addr3, fw.wlan.wol.cmd.bssid, 6);
+
+ wlan_tx_fw(&nullf->s, wlan_wol_connect_callback);
+}
+
+static bool wlan_rx_wol_disconnect(const unsigned int rx_filter,
+ struct ieee80211_hdr *hdr,
+ unsigned int __unused len)
+{
+ const unsigned char *bssid;
+ bssid = (const unsigned char *) AR9170_MAC_REG_BSSID_L;
+
+ /* should catch both broadcast and unicast MLMEs */
+ if (!(rx_filter & CARL9170_RX_FILTER_OTHER_RA)) {
+ if (ieee80211_is_deauth(hdr->frame_control) ||
+ ieee80211_is_disassoc(hdr->frame_control))
+ return true;
+ }
+
+ if (ieee80211_is_beacon(hdr->frame_control) &&
+ compare_ether_address(hdr->addr3, bssid)) {
+ fw.wlan.wol.last_beacon = get_clock_counter();
+ }
+
+ return false;
+}
+
+#endif /* CARL9170FW_WOL_NL80211_TRIGGERS */
+
+#ifdef CONFIG_CARL9170FW_WOL_PROBE_REQUEST
+
+/*
+ * Note: CONFIG_CARL9170FW_WOL_PROBE_REQUEST_SSID is not a real
+ * string. We have to be careful not to add a \0 at the end.
+ */
+static const struct {
+ u8 ssid_ie;
+ u8 ssid_len;
+ u8 ssid[sizeof(CONFIG_CARL9170FW_WOL_PROBE_REQUEST_SSID) - 1];
+} __packed probe_req = {
+ .ssid_ie = WLAN_EID_SSID,
+ .ssid_len = sizeof(CONFIG_CARL9170FW_WOL_PROBE_REQUEST_SSID) - 1,
+ .ssid = CONFIG_CARL9170FW_WOL_PROBE_REQUEST_SSID,
+};
+
+static bool wlan_rx_wol_probe_ssid(struct ieee80211_hdr *hdr, unsigned int len)
+{
+ const unsigned char *data, *end, *scan = (void *) &probe_req;
+
+ /*
+ * IEEE 802.11-2007 7.3.2.1 specifies that the SSID is no
+ * longer than 32 octets.
+ */
+ BUILD_BUG_ON((sizeof(CONFIG_CARL9170FW_WOL_PROBE_REQUEST_SSID) - 1) > 32);
+
+ if (ieee80211_is_probe_req(hdr->frame_control)) {
+ unsigned int i;
+ end = (u8 *)((unsigned long)hdr + len);
+
+ /*
+ * The position of the SSID information element inside
+ * a probe request frame is more or less "fixed".
+ */
+ data = (u8 *)((struct ieee80211_mgmt *)hdr)->u.probe_req.variable;
+ for (i = 0; i < (unsigned int)(probe_req.ssid_len + 1); i++) {
+ if (scan[i] != data[i])
+ return false;
+ }
+
+ return true;
+ }
+
+ return false;
+}
+#endif /* CONFIG_CARL9170FW_WOL_PROBE_REQUEST */
+
+static void wlan_rx_wol(unsigned int rx_filter __unused, struct ieee80211_hdr *hdr __unused, unsigned int len __unused)
+{
+#ifdef CONFIG_CARL9170FW_WOL_NL80211_TRIGGERS
+ /* Disconnect is always enabled */
+ if (fw.wlan.wol.cmd.flags & CARL9170_WOL_DISCONNECT &&
+ rx_filter & CARL9170_RX_FILTER_MGMT)
+ fw.wlan.wol.wake_up |= wlan_rx_wol_disconnect(rx_filter, hdr, len);
+
+ if (fw.wlan.wol.cmd.flags & CARL9170_WOL_MAGIC_PKT &&
+ rx_filter & CARL9170_RX_FILTER_DATA)
+ fw.wlan.wol.wake_up |= wlan_rx_wol_magic_packet(hdr, len);
+#endif /* CONFIG_CARL9170FW_WOL_NL80211_TRIGGERS */
+
+#ifdef CONFIG_CARL9170FW_WOL_PROBE_REQUEST
+ if (rx_filter & CARL9170_RX_FILTER_MGMT)
+ fw.wlan.wol.wake_up |= wlan_rx_wol_probe_ssid(hdr, len);
+#endif /* CONFIG_CARL9170FW_WOL_PROBE_REQUEST */
+}
+
+static void wlan_wol_janitor(void)
+{
+ if (unlikely(fw.suspend_mode == CARL9170_HOST_SUSPENDED)) {
+ if (fw.wlan.wol.cmd.flags & CARL9170_WOL_DISCONNECT) {
+ /*
+ * connection lost after 10sec without receiving
+ * a beacon
+ */
+ if (is_after_msecs(fw.wlan.wol.last_beacon, 10000))
+ fw.wlan.wol.wake_up |= true;
+
+ if (fw.wlan.wol.cmd.null_interval &&
+ is_after_msecs(fw.wlan.wol.last_null, fw.wlan.wol.cmd.null_interval))
+ wlan_wol_connection_monitor();
+
+ if (fw.wlan.wol.lost_null >= 5)
+ fw.wlan.wol.wake_up |= true;
+ }
+
+ if (fw.wlan.wol.wake_up) {
+ fw.suspend_mode = CARL9170_AWAKE_HOST;
+ set(AR9170_USB_REG_WAKE_UP, AR9170_USB_WAKE_UP_WAKE);
+ }
+ }
}
#endif /* CONFIG_CARL9170FW_WOL */
} else if (ieee80211_is_ctl(hdr->frame_control)) {
switch (le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_STYPE) {
case IEEE80211_STYPE_BACK_REQ:
-#ifdef CONFIG_CARL9170FW_HANDLE_BACK_REQ
handle_bar(desc, hdr, data_len, mac_err);
-#endif /* CONFIG_CARL9170FW_HANDLE_BACK_REQ */
/* fallthrough */
rx_filter |= CARL9170_RX_FILTER_CTL_BACKR;
break;
#ifdef CONFIG_CARL9170FW_WOL
if (unlikely(fw.suspend_mode == CARL9170_HOST_SUSPENDED)) {
- if (rx_filter & CARL9170_RX_FILTER_DATA)
- wlan_rx_wol(hdr, min(data_len,
- (unsigned int)AR9170_BLOCK_SIZE));
+ wlan_rx_wol(rx_filter, hdr, min(data_len,
+ (unsigned int)AR9170_BLOCK_SIZE));
}
#endif /* CONFIG_CARL9170FW_WOL */
up_trigger();
} else {
dma_reclaim(&fw.wlan.rx_queue, desc);
- _wlan_trigger(AR9170_DMA_TRIGGER_RXQ);
+ wlan_trigger(AR9170_DMA_TRIGGER_RXQ);
}
}
}
return NULL;
}
-void wlan_cab_modify_dtim_beacon(const unsigned int vif,
+void wlan_modify_beacon(const unsigned int vif,
const unsigned int addr, const unsigned int len)
{
uint8_t *_ie;
ie->bitmap_ctrl |= 0x1;
}
}
+
+ /*
+ * Ideally, the sequence number should be assigned by the TX arbiter
+ * hardware. But AFAIK that's not possible, so we have to go for the
+ * next best thing and write it into the beacon fifo during the open
+ * beacon update window.
+ */
+
+ wlan_assign_seq((struct ieee80211_hdr *)addr, vif);
+}
+
+static void wlan_send_buffered_cab(void)
+{
+ unsigned int i;
+
+ for (i = 0; i < CARL9170_INTF_NUM; i++) {
+ if (unlikely(fw.wlan.cab_flush_trigger[i] == CARL9170_CAB_TRIGGER_ARMED)) {
+ /*
+ * This is hardcoded into carl9170usb driver.
+ *
+ * The driver must set the PRETBTT event to beacon_interval -
+ * CARL9170_PRETBTT_KUS (usually 6) Kus.
+ *
+ * But still, we can only do so much about 802.11-2007 9.3.2.1 &
+ * 11.2.1.6. Let's hope the current solution is adequate enough.
+ */
+
+ if (is_after_msecs(fw.wlan.cab_flush_time, (CARL9170_TBTT_DELTA))) {
+ wlan_cab_flush_queue(i);
+
+ /*
+ * This prevents the code from sending new BC/MC frames
+ * which were queued after the previous buffered traffic
+ * has been sent out... They will have to wait until the
+ * next DTIM beacon comes along.
+ */
+ fw.wlan.cab_flush_trigger[i] = CARL9170_CAB_TRIGGER_DEFER;
+ }
+ }
+
+ }
}
#endif /* CONFIG_CARL9170FW_CAB_QUEUE */
bcn_count = get(AR9170_MAC_REG_BCN_COUNT);
send_cmd_to_host(4, CARL9170_RSP_BEACON_CONFIG, 0x00,
(uint8_t *) &bcn_count);
-
- set(AR9170_MAC_REG_BCN_CTRL, AR9170_BCN_CTRL_READY);
}
static void handle_pretbtt(void)
fw.wlan.cab_flush_time = get_clock_counter();
#endif /* CONFIG_CARL9170FW_CAB_QUEUE */
-#ifdef CONFIG_CARL9170FW_PSM
+#ifdef CONFIG_CARL9170FW_RADIO_FUNCTIONS
rf_psm();
send_cmd_to_host(4, CARL9170_RSP_PRETBTT, 0x00,
(uint8_t *) &fw.phy.psm.state);
-#else
- send_cmd_to_host(0, CARL9170_RSP_PRETBTT, 0x00, NULL);
-#endif /* CONFIG_CARL9170FW_PSM */
+#endif /* CONFIG_CARL9170FW_RADIO_FUNCTIONS */
}
static void handle_atim(void)
static void wlan_janitor(void)
{
#ifdef CONFIG_CARL9170FW_CAB_QUEUE
- unsigned int i;
-
- for (i = 0; i < CARL9170_INTF_NUM; i++) {
- if (unlikely(fw.wlan.cab_flush_trigger[i] == CARL9170_CAB_TRIGGER_ARMED)) {
- /*
- * This is hardcoded into carl9170usb driver.
- *
- * The driver must set the PRETBTT event to beacon_interval -
- * CARL9170_PRETBTT_KUS (usually 6) Kus.
- *
- * But still, we can only do so much about 802.11-2007 9.3.2.1 &
- * 11.2.1.6. Let's hope the current solution is adequate enough.
- */
-
- if (is_after_msecs(fw.wlan.cab_flush_time, (CARL9170_TBTT_DELTA))) {
- wlan_cab_flush_queue(i);
-
- /*
- * This prevents the code from sending new BC/MC frames
- * which were queued after the previous buffered traffic
- * has been sent out... They will have to wait until the
- * next DTIM beacon comes along.
- */
- fw.wlan.cab_flush_trigger[i] = CARL9170_CAB_TRIGGER_DEFER;
- }
- }
-
- }
+ wlan_send_buffered_cab();
#endif /* CONFIG_CARL9170FW_CAB_QUEUE */
-#ifdef CONFIG_CARL9170FW_DELAYED_TX
- if (fw.wlan.tx_trigger) {
- _wlan_trigger(fw.wlan.tx_trigger);
- fw.wlan.tx_trigger = 0;
- }
-#endif /* CONFIG_CARL9170FW_DELAYED_TX */
-
wlan_send_buffered_tx_status();
-#ifdef CONFIG_CARL9170FW_HANDLE_BACK_REQ
wlan_send_buffered_ba();
-#endif /* CONFIG_CARL9170FW_HANDLE_BACK_REQ */
+
+#ifdef CONFIG_CARL9170FW_WOL
+ wlan_wol_janitor();
+#endif /* CONFIG_CARL9170FW_WOL */
}
void handle_wlan(void)
#undef HANDLER
}
+enum {
+ CARL9170FW_TX_MAC_BUMP = 4,
+ CARL9170FW_TX_MAC_DEBUG = 6,
+ CARL9170FW_TX_MAC_RESET = 7,
+};
+
static void wlan_check_hang(void)
{
struct dma_desc *desc;
- unsigned int i;
+ int i;
- for (i = 0; i < __AR9170_NUM_TX_QUEUES; i++) {
+ for (i = AR9170_TXQ_SPECIAL; i >= AR9170_TXQ0; i--) {
if (queue_empty(&fw.wlan.tx_queue[i])) {
/* Nothing to do here... move along */
continue;
}
/* fetch the current DMA queue position */
- desc = get_wlan_txq_addr(i);
+ desc = (struct dma_desc *)get_wlan_txq_addr(i);
/* Stuck frame detection */
- if (unlikely(desc == fw.wlan.last_tx_desc[i])) {
- fw.wlan.last_tx_desc_num[i]++;
+ if (unlikely(DESC_PAYLOAD(desc) == fw.wlan.last_super[i])) {
+ fw.wlan.last_super_num[i]++;
- if (unlikely(fw.wlan.last_tx_desc_num[i] > 6)) {
+ if (unlikely(fw.wlan.last_super_num[i] >= CARL9170FW_TX_MAC_RESET)) {
/*
* schedule MAC reset (aka OFF/ON => dead)
*
}
#ifdef CONFIG_CARL9170FW_DEBUG
- if (unlikely(fw.wlan.last_tx_desc_num[i] > 5)) {
+ if (unlikely(fw.wlan.last_super_num[i] >= CARL9170FW_TX_MAC_DEBUG)) {
/*
* Sigh, the queue is almost certainly
* dead. Dump the queue content to the
#endif /* CONFIG_CARL9170FW_DEBUG */
#ifdef CONFIG_CARL9170FW_DMA_QUEUE_BUMP
- if (unlikely(fw.wlan.last_tx_desc_num[i] > 3)) {
+ if (unlikely(fw.wlan.last_super_num[i] >= CARL9170FW_TX_MAC_BUMP)) {
/*
* Hrrm, bump the queue a bit.
* maybe this will get it going again.
#endif /* CONFIG_CARL9170FW_DMA_QUEUE_BUMP */
} else {
/* Nothing stuck */
- fw.wlan.last_tx_desc[i] = desc;
- fw.wlan.last_tx_desc_num[i] = 0;
+ fw.wlan.last_super[i] = DESC_PAYLOAD(desc);
+ fw.wlan.last_super_num[i] = 0;
}
}
}
uint32_t ack_power;
uint32_t rts_cts_tpc;
uint32_t rts_cts_rate;
- unsigned int i;
+ int i;
#ifdef CONFIG_CARL9170FW_RADIO_FUNCTIONS
uint32_t rx_BB;
#endif /* CONFIG_CARL9170FW_RADIO_FUNCTIONS */
+#ifdef CONFIG_CARL9170FW_NOISY_MAC_RESET
INFO("MAC RESET");
+#endif /* CONFIG_CARL9170FW_NOISY_MAC_RESET */
/* Save aggregation parameters */
agg_wait_counter = get(AR9170_MAC_REG_AMPDU_FACTOR);
* set(AR9170_PHY_REG_CCA_THRESHOLD, 0x0);
*/
+ val = AR9170_DMA_TRIGGER_RXQ;
/* Reinitialize all WLAN TX DMA queues. */
- for (i = 0; i < __AR9170_NUM_TX_QUEUES; i++) {
+ for (i = AR9170_TXQ_SPECIAL; i >= AR9170_TXQ0; i--) {
struct dma_desc *iter;
__for_each_desc_bits(iter, &fw.wlan.tx_queue[i], AR9170_OWN_BITS_SW);
+ /* kill the stuck frame */
+ if (!is_terminator(&fw.wlan.tx_queue[i], iter) &&
+ fw.wlan.last_super_num[i] >= CARL9170FW_TX_MAC_RESET &&
+ fw.wlan.last_super[i] == DESC_PAYLOAD(iter)) {
+ struct carl9170_tx_superframe *super = get_super(iter);
+
+ iter->status = AR9170_OWN_BITS_SW;
+ /*
+ * Mark the frame as failed.
+ * The BAFAIL flag allows the frame to sail through
+ * wlan_tx_status without much "unstuck" trouble.
+ */
+ iter->ctrl &= ~(AR9170_CTRL_FAIL);
+ iter->ctrl |= AR9170_CTRL_BAFAIL;
+
+ super->s.cnt = CARL9170_TX_MAX_RATE_TRIES;
+ super->s.rix = CARL9170_TX_MAX_RETRY_RATES;
+
+ fw.wlan.last_super_num[i] = 0;
+ fw.wlan.last_super[i] = NULL;
+ iter = iter->lastAddr->nextAddr;
+ }
+
set_wlan_txq_dma_addr(i, (uint32_t) iter);
if (!is_terminator(&fw.wlan.tx_queue[i], iter))
- wlan_trigger(BIT(i));
+ val |= BIT(i);
DBG("Q:%d l:%d h:%p t:%p cu:%p it:%p ct:%x st:%x\n", i, queue_len(&fw.wlan.tx_queue[i]),
fw.wlan.tx_queue[i].head, fw.wlan.tx_queue[i].terminator,
AR9170_MAC_INT_RETRY_FAIL;
set(AR9170_MAC_REG_DMA_RXQ_ADDR, (uint32_t) fw.wlan.rx_queue.head);
- wlan_trigger(AR9170_DMA_TRIGGER_RXQ);
+ wlan_trigger(val);
}
#else
static void wlan_mac_reset(void)
projects / carl9170fw.git / blobdiff