static void wlan_txunstuck(unsigned int queue)
{
set_wlan_txq_dma_addr(queue, ((uint32_t) fw.wlan.tx_queue[queue].head) | 1);
- wlan_trigger(BIT(queue));
}
+#ifdef CONFIG_CARL9170FW_DMA_QUEUE_BUMP
static void wlan_txupdate(unsigned int queue)
{
set_wlan_txq_dma_addr(queue, ((uint32_t) fw.wlan.tx_queue[queue].head));
- wlan_trigger(BIT(queue));
}
static void wlan_dma_bump(unsigned int qidx)
wlan_txupdate(qidx);
}
}
+#endif /* CONFIG_CARL9170FW_DMA_QUEUE_BUMP */
#ifdef CONFIG_CARL9170FW_DEBUG
static void wlan_dump_queue(unsigned int qidx)
static bool wlan_tx_consume_retry(struct carl9170_tx_superframe *super)
{
/* check if this was the last possible retry with this rate */
- if (unlikely(super->s.cnt >= super->s.tries[super->s.rix])) {
+ if (unlikely(super->s.cnt >= super->s.ri[super->s.rix].tries)) {
/* end of the road - indicate tx failure */
if (unlikely(super->s.rix == CARL9170_TX_MAX_RETRY_RATES))
return false;
/* finally - mark the old rate as USED */
super->s.rix++;
+ /* update MAC flags */
+ super->f.hdr.mac.erp_prot = super->s.ri[super->s.rix].erp_prot;
+ super->f.hdr.mac.ampdu = super->s.ri[super->s.rix].ampdu;
+
/* reinitialize try counter */
super->s.cnt = 1;
} else {
return true;
}
+static inline u16 get_tid(struct ieee80211_hdr *hdr)
+{
+ return (ieee80211_get_qos_ctl(hdr))[0] & IEEE80211_QOS_CTL_TID_MASK;
+}
+
+/* This function will only work on uint32_t-aligned pointers! */
+static inline bool compare_ether_address(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]) | (unsigned short)(d0[1] ^ d1[1]));
+}
+
+#ifdef CONFIG_CARL9170FW_TX_AMPDU
+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;
+ } 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)))
+ 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)
{
struct carl9170_tx_superframe *super = get_super(desc);
-#ifdef CONFIG_CARL9170FW_NORMAL_TX_RX
- unsigned int queue = super->s.queue;
-#endif /* CONFIG_CARL9170FW_LOOPBACK */
if (unlikely(super->s.fill_in_tsf)) {
struct ieee80211_mgmt *mgmt = (void *) &super->f.data.i3e;
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);
unhide_super(desc);
# endif /* CONFIG_CARL9170FW_DEBUG && CONFIG_CARL9170FW_PSM */
/* insert desc into the right queue */
- dma_put(&fw.wlan.tx_queue[queue], desc);
- wlan_trigger(BIT(queue));
+ dma_put(&fw.wlan.tx_queue[super->s.queue], desc);
#endif /* CONFIG_CARL9170FW_LOOPBACK */
}
success = true;
- if (!!(desc->ctrl & AR9170_CTRL_FAIL_MASK)) {
+ /* update hangcheck */
+ fw.wlan.last_tx_desc_num[qidx] = 0;
+
+ if (!!(desc->ctrl & AR9170_CTRL_FAIL)) {
txfail = !!(desc->ctrl & AR9170_CTRL_TXFAIL);
/* reset retry indicator flags */
unhide_super(desc);
- /* update hangcheck */
- fw.wlan.last_tx_desc_num[qidx] = 0;
-
#ifdef CONFIG_CARL9170FW_HANDLE_BACK_REQ
if (unlikely(super == (void *) &dma_mem.reserved.ba)) {
fw.wlan.ba_desc = desc;
#ifdef CONFIG_CARL9170FW_CAB_QUEUE
if (unlikely(super->s.cab))
- fw.wlan.cab_queue_len--;
+ fw.wlan.cab_queue_len[super->s.vif_id]--;
#endif /* CONFIG_CARL9170FW_CAB_QUEUE */
/* recycle freed descriptors */
for_each_desc(desc, &fw.wlan.tx_delay[i])
_wlan_tx(desc);
#endif /* CONFIG_CARL9170FW_DELAYED_TX */
+ wlan_trigger(BIT(i));
}
}
super->s.cnt = 1;
hide_super(desc);
+#ifdef CONFIG_CARL9170FW_CAB_QUEUE
+ if (unlikely(super->s.cab)) {
+ fw.wlan.cab_queue_len[super->s.vif_id]++;
+ dma_put(&fw.wlan.cab_queue[super->s.vif_id], desc);
+ return;
+ }
+#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);
}
#endif /* CONFIG_CARL9170FW_DELAYED_TX */
-#ifdef CONFIG_CARL9170FW_CAB_QUEUE
- if (unlikely(super->s.cab)) {
- fw.wlan.cab_queue_len++;
- dma_put(&fw.wlan.cab_queue, desc);
- return;
- }
-#endif /* CONFIG_CARL9170FW_CAB_QUEUE */
-
_wlan_tx(desc);
+ wlan_trigger(BIT(super->s.queue));
}
#ifdef CONFIG_CARL9170FW_HANDLE_BACK_REQ
sizeof(struct ar9170_tx_hwdesc) +
sizeof(struct ieee80211_ba);
- baf->s.tries[0] = 3;
+ baf->s.ri[0].tries = 3;
baf->s.queue = 0;
baf->f.hdr.length = sizeof(struct ieee80211_ba) + FCS_LEN;
return tmp;
}
-static void handle_bar(struct dma_desc *desc)
+static void handle_bar(struct dma_desc *desc, struct ieee80211_hdr *hdr,
+ unsigned int len, unsigned int mac_err)
{
- struct ieee80211_hdr *hdr;
struct ieee80211_bar *bar;
struct carl9170_bar_ctx *ctx;
- hdr = ar9170_get_rx_i3e(desc);
-
- /* check if this is a BAR for us */
- if (likely(!ieee80211_is_back_req(hdr->frame_control)))
- return ;
-
- if (unlikely(ar9170_get_rx_macstatus_error(desc))) {
+ if (unlikely(mac_err)) {
/*
* This check does a number of things:
* 1. checks if the frame is in good nick
return ;
}
- if (unlikely(ar9170_get_rx_mpdu_len(desc) <
- sizeof(struct ieee80211_bar))) {
+ if (unlikely(len < (sizeof(struct ieee80211_bar) + FCS_LEN))) {
/*
* Sneaky, corrupted BARs... but not with us!
*/
DBG("RX Overrun");
fw.wlan.mac_reset++;
}
+
+ wlan_trigger(AR9170_DMA_TRIGGER_RXQ);
}
}
-static void handle_rx(void)
+static unsigned int wlan_rx_filter(struct dma_desc *desc)
{
- struct dma_desc *desc;
+ struct ieee80211_hdr *hdr;
+ unsigned int data_len;
+ unsigned int rx_filter;
+ unsigned int mac_err;
- wlan_check_rx_overrun();
+ data_len = ar9170_get_rx_mpdu_len(desc);
+ mac_err = ar9170_get_rx_macstatus_error(desc);
- for_each_desc_not_bits(desc, &fw.wlan.rx_queue, AR9170_OWN_BITS_HW) {
- if (unlikely(desc->totalLen < 26 ||
- desc->totalLen > CONFIG_CARL9170FW_RX_FRAME_LEN)) {
- /*
- * This frame is too damaged to do anything
- * useful with it.
- */
- dma_reclaim(&fw.wlan.rx_queue, desc);
- _wlan_trigger(AR9170_DMA_TRIGGER_RXQ);
- } else {
+#define AR9170_RX_ERROR_BAD (AR9170_RX_ERROR_FCS | AR9170_RX_ERROR_PLCP)
+
+ if (unlikely(data_len < (4 + 6 + FCS_LEN) ||
+ desc->totalLen > CONFIG_CARL9170FW_RX_FRAME_LEN) ||
+ mac_err & AR9170_RX_ERROR_BAD) {
+ /*
+ * This frame is too damaged to do anything
+ * useful with it.
+ */
+
+ return CARL9170_RX_FILTER_BAD;
+ }
+
+ rx_filter = 0;
+ if (mac_err & AR9170_RX_ERROR_WRONG_RA)
+ rx_filter |= CARL9170_RX_FILTER_OTHER_RA;
+
+ if (mac_err & AR9170_RX_ERROR_DECRYPT)
+ rx_filter |= CARL9170_RX_FILTER_DECRY_FAIL;
+
+ hdr = ar9170_get_rx_i3e(desc);
+ if (likely(ieee80211_is_data(hdr->frame_control))) {
+ rx_filter |= CARL9170_RX_FILTER_DATA;
+ } 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);
+ handle_bar(desc, hdr, data_len, mac_err);
#endif /* CONFIG_CARL9170FW_HANDLE_BACK_REQ */
+ /* fallthrough */
+ rx_filter |= CARL9170_RX_FILTER_CTL_BACKR;
+ break;
+ case IEEE80211_STYPE_PSPOLL:
+ rx_filter |= CARL9170_RX_FILTER_CTL_PSPOLL;
+ break;
+ default:
+ rx_filter |= CARL9170_RX_FILTER_CTL_OTHER;
+ break;
+ }
+ } else {
+ /* ieee80211_is_mgmt */
+ rx_filter |= CARL9170_RX_FILTER_MGMT;
+ }
+
+#undef AR9170_RX_ERROR_BAD
+ return rx_filter;
+}
+
+static void handle_rx(void)
+{
+ struct dma_desc *desc;
+
+ for_each_desc_not_bits(desc, &fw.wlan.rx_queue, AR9170_OWN_BITS_HW) {
+ if (!(wlan_rx_filter(desc) & fw.wlan.rx_filter)) {
dma_put(&fw.pta.up_queue, desc);
up_trigger();
+ } else {
+ dma_reclaim(&fw.wlan.rx_queue, desc);
+ _wlan_trigger(AR9170_DMA_TRIGGER_RXQ);
}
}
}
#ifdef CONFIG_CARL9170FW_CAB_QUEUE
-static uint8_t *beacon_find_ie(uint8_t ie)
+void wlan_cab_flush_queue(const unsigned int vif)
{
- struct ieee80211_mgmt *mgmt = getp(AR9170_MAC_REG_BCN_ADDR);
- uint8_t *pos, *end;
- unsigned int len;
+ struct dma_queue *cab_queue = &fw.wlan.cab_queue[vif];
+ struct dma_desc *desc;
- len = get(AR9170_MAC_REG_BCN_LENGTH);
+ /* move queued frames into the main tx queues */
+ for_each_desc(desc, cab_queue) {
+ struct carl9170_tx_superframe *super = get_super(desc);
+ if (!queue_empty(cab_queue)) {
+ /*
+ * Set MOREDATA flag for all,
+ * but the last queued frame.
+ * see: 802.11-2007 11.2.1.5 f)
+ *
+ * This is actually the reason to why
+ * we need to prevent the reentry.
+ */
- if (len < FCS_LEN + sizeof(mgmt))
- return NULL;
+ super->f.data.i3e.frame_control |=
+ cpu_to_le16(IEEE80211_FCTL_MOREDATA);
+ } else {
+ super->f.data.i3e.frame_control &=
+ cpu_to_le16(~IEEE80211_FCTL_MOREDATA);
+ }
+
+ /* ready to roll! */
+ _wlan_tx(desc);
+ wlan_trigger(BIT(super->s.queue));
+ }
+}
+
+static uint8_t *beacon_find_ie(uint8_t ie, void *addr,
+ const unsigned int len)
+{
+ struct ieee80211_mgmt *mgmt = addr;
+ uint8_t *pos, *end;
pos = mgmt->u.beacon.variable;
end = (uint8_t *) ((unsigned long)mgmt + (len - FCS_LEN));
return NULL;
}
-static void wlan_cab_flush_queue(void)
+void wlan_cab_modify_dtim_beacon(const unsigned int vif,
+ const unsigned int addr, const unsigned int len)
{
- struct dma_desc *desc;
uint8_t *_ie;
struct ieee80211_tim_ie *ie;
- /*
- * 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.
- */
- if (unlikely(fw.wlan.cab_flush_trigger == CARL9170_CAB_TRIGGER_DEFER))
- return ;
-
- _ie = beacon_find_ie(WLAN_EID_TIM);
- if (unlikely(!_ie))
- return ;
-
- ie = (struct ieee80211_tim_ie *) &_ie[2];
-
- /* Ideally, check here for == AR9170_CAB_TRIGGER_ARMED */
- if (fw.wlan.cab_flush_trigger) {
- /* move queued frames into the main tx queues */
- for_each_desc(desc, &fw.wlan.cab_queue) {
- struct carl9170_tx_superframe *super = get_super(desc);
-
- if (!queue_empty(&fw.wlan.cab_queue)) {
- /*
- * Set MOREDATA flag for all,
- * but the last queued frame.
- * see: 802.11-2007 11.2.1.5 f)
- *
- * This is actually the reason to why
- * we need to prevent the reentry.
- */
-
- super->f.data.i3e.frame_control |=
- cpu_to_le16(IEEE80211_FCTL_MOREDATA);
- } else {
- super->f.data.i3e.frame_control &=
- cpu_to_le16(~IEEE80211_FCTL_MOREDATA);
- }
-
- /* ready to roll! */
- _wlan_tx(desc);
- }
- }
-
- /* Transfer finished - waiting for tx status */
- fw.wlan.cab_flush_trigger = CARL9170_CAB_TRIGGER_DEFER;
-}
-
-static void wlan_cab_modify_dtim_beacon(void)
-{
- uint8_t *_ie;
- struct ieee80211_tim_ie *ie;
-
- _ie = beacon_find_ie(WLAN_EID_TIM);
+ _ie = beacon_find_ie(WLAN_EID_TIM, (void *)addr, len);
if (likely(_ie)) {
ie = (struct ieee80211_tim_ie *) &_ie[2];
- if (!queue_empty(&fw.wlan.cab_queue) && (ie->dtim_count == 0)) {
+ if (!queue_empty(&fw.wlan.cab_queue[vif]) && (ie->dtim_count == 0)) {
/* schedule DTIM transfer */
- fw.wlan.cab_flush_trigger = CARL9170_CAB_TRIGGER_ARMED;
- } else if ((fw.wlan.cab_queue_len == 0) && (fw.wlan.cab_flush_trigger)) {
+ fw.wlan.cab_flush_trigger[vif] = CARL9170_CAB_TRIGGER_ARMED;
+ } else if ((fw.wlan.cab_queue_len[vif] == 0) && (fw.wlan.cab_flush_trigger[vif])) {
/* undo all chances to the beacon structure */
ie->bitmap_ctrl &= ~0x1;
- fw.wlan.cab_flush_trigger = CARL9170_CAB_TRIGGER_EMPTY;
+ fw.wlan.cab_flush_trigger[vif] = CARL9170_CAB_TRIGGER_EMPTY;
}
- if (fw.wlan.cab_flush_trigger) {
+ /* Triggered by CARL9170_CAB_TRIGGER_ARMED || CARL9170_CAB_TRIGGER_DEFER */
+ if (fw.wlan.cab_flush_trigger[vif]) {
/* Set the almighty Multicast Traffic Indication Bit. */
ie->bitmap_ctrl |= 0x1;
}
{
uint32_t bcn_count;
-#ifdef CONFIG_CARL9170FW_CAB_QUEUE
- /*
- * The application has now updated the relevant beacon data.
- * Now it should be the perfect time to apply the DTIM
- * multicast information.
- */
-
- wlan_cab_modify_dtim_beacon();
-#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)
#else
send_cmd_to_host(0, CARL9170_RSP_PRETBTT, 0x00, NULL);
#endif /* CONFIG_CARL9170FW_PSM */
-
}
static void handle_atim(void)
static void wlan_janitor(void)
{
#ifdef CONFIG_CARL9170FW_CAB_QUEUE
- if (unlikely(fw.wlan.cab_flush_trigger)) {
- /*
- * 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.
- */
+ unsigned int i;
- if (is_after_msecs(fw.wlan.cab_flush_time,
- (CARL9170_TBTT_DELTA))) {
- wlan_cab_flush_queue();
+ 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 */
} \
} while (0)
+ intr |= fw.wlan.soft_int;
+ fw.wlan.soft_int = 0;
+
HANDLER(intr, AR9170_MAC_INT_PRETBTT, handle_pretbtt);
HANDLER(intr, AR9170_MAC_INT_ATIM, handle_atim);
}
#endif /* CONFIG_CARL9170FW_DEBUG */
+#ifdef CONFIG_CARL9170FW_DMA_QUEUE_BUMP
if (unlikely(fw.wlan.last_tx_desc_num[i] > 3)) {
/*
* Hrrm, bump the queue a bit.
*/
wlan_dma_bump(i);
+ wlan_trigger(BIT(i));
}
+#endif /* CONFIG_CARL9170FW_DMA_QUEUE_BUMP */
} else {
/* Nothing stuck */
fw.wlan.last_tx_desc[i] = desc;
}
}
+#ifdef CONFIG_CARL9170FW_FW_MAC_RESET
/*
* NB: Resetting the MAC is a two-edged sword.
* On most occasions, it does what it is supposed to do.
uint32_t cam_mode;
uint32_t ack_power;
uint32_t rts_cts_tpc;
+ uint32_t rts_cts_rate;
unsigned int i;
#ifdef CONFIG_CARL9170FW_RADIO_FUNCTIONS
uint32_t rx_BB;
#endif /* CONFIG_CARL9170FW_RADIO_FUNCTIONS */
- ERR("MAC RESET");
+ INFO("MAC RESET");
/* Save aggregation parameters */
agg_wait_counter = get(AR9170_MAC_REG_AMPDU_FACTOR);
ack_power = get(AR9170_MAC_REG_ACK_TPC);
rts_cts_tpc = get(AR9170_MAC_REG_RTS_CTS_TPC);
+ rts_cts_rate = get(AR9170_MAC_REG_RTS_CTS_RATE);
#ifdef CONFIG_CARL9170FW_RADIO_FUNCTIONS
/* 0x1c8960 write only */
set(AR9170_MAC_REG_RTS_CTS_TPC, rts_cts_tpc);
set(AR9170_MAC_REG_ACK_TPC, ack_power);
+ set(AR9170_MAC_REG_RTS_CTS_RATE, rts_cts_rate);
#ifdef CONFIG_CARL9170FW_RADIO_FUNCTIONS
set(AR9170_PHY_REG_SWITCH_CHAIN_2, rx_BB);
* set(AR9170_PHY_REG_CCA_THRESHOLD, 0x0);
*/
+ /* Reinitialize all WLAN TX DMA queues. */
for (i = 0; i < __AR9170_NUM_TX_QUEUES; i++) {
- DBG("Q:%d l:%d h:%p t:%p\n", i, queue_len(&fw.wlan.tx_queue[i]),
- fw.wlan.tx_queue[i].head, fw.wlan.tx_queue[i].terminator);
+ struct dma_desc *iter;
- set_wlan_txq_dma_addr(i, (uint32_t) fw.wlan.tx_queue[i].head);
+ __for_each_desc_bits(iter, &fw.wlan.tx_queue[i], AR9170_OWN_BITS_SW);
- if (!queue_empty(&fw.wlan.tx_queue[i]))
+ set_wlan_txq_dma_addr(i, (uint32_t) iter);
+ if (!is_terminator(&fw.wlan.tx_queue[i], iter))
wlan_trigger(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,
+ get_wlan_txq_addr(i), iter, iter->ctrl, iter->status);
}
- handle_rx();
+ fw.wlan.soft_int |= AR9170_MAC_INT_RXC | AR9170_MAC_INT_TXC |
+ 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);
}
+#else
+static void wlan_mac_reset(void)
+{
+ /* The driver takes care of reinitializing the device */
+ BUG("MAC RESET");
+}
+#endif /* CONFIG_CARL9170FW_FW_MAC_RESET */
void __cold wlan_timer(void)
{