#include "printf.h"
#include "rf.h"
#include "linux/ieee80211.h"
-#include "rom.h"
+#include "wol.h"
static void wlan_txunstuck(unsigned int queue)
{
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]));
+ return (ieee80211_get_qos_ctl(hdr))[0] & IEEE80211_QOS_CTL_TID_MASK;
}
/* This function will only work on uint32_t-aligned pointers! */
return (get_tid(a) == get_tid(b)) || same_hdr(a, b);
}
+static void wlan_tx_ampdu_reset(unsigned int qidx)
+{
+ fw.wlan.ampdu_prev[qidx] = NULL;
+}
+
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;
+
+ wlan_tx_ampdu_reset(qidx);
}
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) {
- wlan_tx_ampdu_end(qidx);
- } else {
- fw.wlan.ampdu_prev[qidx] = super;
-
+ if (super->f.hdr.mac.ampdu) {
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;
+
+ fw.wlan.ampdu_prev[qidx] = super;
+ } else {
+ wlan_tx_ampdu_end(qidx);
}
}
wlan_tx_ampdu(super);
-#if (defined CONFIG_CARL9170FW_LOOPBACK) || (defined CONFIG_CARL9170FW_DISCARD)
- wlan_tx_complete(super, true);
- unhide_super(desc);
-# ifdef CONFIG_CARL9170FW_LOOPBACK
- dma_put(&fw.pta.up_queue, desc);
- up_trigger();
-# elif CONFIG_CARL9170FW_DISCARD
- dma_reclaim(&fw.pta.down_queue, desc);
- down_trigger();
-# endif
-#else /* CONFIG_CARL9170FW_LOOPBACK */
-
-# ifdef CONFIG_CARL9170FW_DEBUG
+#ifdef CONFIG_CARL9170FW_DEBUG
BUG_ON(fw.phy.psm.state != CARL9170_PSM_WAKE);
-# endif /* CONFIG_CARL9170FW_DEBUG */
+#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)))
+ if (ieee80211_is_first_frag(hdr->seq_ctrl))
fw.wlan.sequence[vif] += 0x10;
}
{
struct carl9170_tx_superframe *super = get_super(desc);
- if (unlikely(super->s.assign_seq)) {
+ 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,
get(AR9170_MAC_REG_AMPDU_FACTOR),
8 << super->s.ampdu_factor));
}
-
- __wlan_tx(desc);
}
/* propagate transmission status back to the driver */
/* reset retry indicator flags */
desc->ctrl &= ~(AR9170_CTRL_TXFAIL | AR9170_CTRL_BAFAIL);
+ /*
+ * Note: wlan_tx_consume_retry will override the old
+ * phy [CCK,OFDM, HT, BW20/40, MCS...] and mac vectors
+ * [AMPDU,RTS/CTS,...] therefore be careful when they
+ * are used.
+ */
if (wlan_tx_consume_retry(super)) {
/*
* retry for simple and aggregated 802.11 frames.
* be aware of this so the frames don't get lost.
*/
+#ifndef CONFIG_CARL9170FW_DEBUG
dma_unlink_head(queue);
+#else /* CONFIG_CARL9170FW_DEBUG */
+ BUG_ON(dma_unlink_head(queue) != desc);
+#endif /* CONFIG_CARL9170FW_DEBUG */
dma_put(&fw.wlan.tx_retry, desc);
return true;
}
}
}
+#ifndef CONFIG_CARL9170FW_DEBUG
dma_unlink_head(queue);
+#else /* CONFIG_CARL9170FW_DEBUG */
+ BUG_ON(dma_unlink_head(queue) != desc);
+#endif /* CONFIG_CARL9170FW_DEBUG */
if (txfail) {
/*
* Issue the queue bump,
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();
}
}
+ wlan_tx_ampdu_reset(i);
+
for_each_desc(desc, &fw.wlan.tx_retry)
__wlan_tx(desc);
#endif /* CONFIG_CARL9170FW_CAB_QUEUE */
_wlan_tx(desc);
+ __wlan_tx(desc);
wlan_trigger(BIT(super->s.queue));
}
-#ifdef CONFIG_CARL9170FW_HANDLE_BACK_REQ
+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;
struct ieee80211_ba *ba = (struct ieee80211_ba *) &baf->f.ba;
struct carl9170_bar_ctx *ctx;
- if (likely(fw.wlan.ba_head_idx == fw.wlan.ba_tail_idx))
+ if (likely(!fw.wlan.queued_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];
fw.wlan.ba_head_idx++;
fw.wlan.ba_head_idx %= CONFIG_CARL9170FW_BACK_REQS_NUM;
+ fw.wlan.queued_ba--;
- /* 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.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.mac.backoff = 1;
- baf->f.hdr.mac.hw_duration = 1;
+ baf->f.hdr.mac.no_ack = 1;
- /* take the TX rate from the RX'd BAR */
- baf->f.hdr.phy.set = ctx->phy;
- baf->f.hdr.phy.tx_power = 29; /* 14.5 dBm */
+ baf->f.hdr.phy.modulation = 1; /* OFDM */
+ baf->f.hdr.phy.tx_power = 34; /* 17 dBm */
+ baf->f.hdr.phy.chains = 1;
+ baf->f.hdr.phy.mcs = AR9170_TXRX_PHY_RATE_OFDM_6M;
/* 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)
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;
+ if (fw.wlan.queued_ba < CONFIG_CARL9170FW_BACK_REQS_NUM)
+ fw.wlan.queued_ba++;
return tmp;
}
-static void handle_bar(struct dma_desc *desc, struct ieee80211_hdr *hdr,
+static void handle_bar(struct dma_desc *desc __unused, struct ieee80211_hdr *hdr,
unsigned int len, unsigned int mac_err)
{
struct ieee80211_bar *bar;
*/
ctx->control = bar->control | cpu_to_le16(1);
ctx->start_seq_num = bar->start_seq_num;
- ctx->phy = ar9170_rx_to_phy(desc);
- if (unlikely(!ctx->phy)) {
- /* provide a backup, in case ar9170_rx_to_phy fails */
- 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
-
-#ifdef CONFIG_CARL9170FW_WOL_MAGIC_PACKET
-static bool wlan_rx_wol_magic_packet(struct ieee80211_hdr *hdr, unsigned int len)
-{
- const unsigned char *data, *end, *mac;
- unsigned int found = 0;
-
- /*
- * LIMITATION:
- * We can only scan the first AR9170_BLOCK_SIZE [=~320] bytes
- * 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;
-
- data = (u8 *)((unsigned long)hdr + ieee80211_hdrlen(hdr->frame_control));
- end = (u8 *)((unsigned long)hdr + len);
-
- /*
- * scan for standard WOL Magic frame
- *
- * "A physical WakeOnLAN (Magic Packet) will look like this:
- * ---------------------------------------------------------------
- * | Synchronization Stream | Target MAC | Password (optional) |
- * | 6 octets | 96 octets | 0, 4 or 6 |
- * ---------------------------------------------------------------
- *
- * The Synchronization Stream is defined as 6 bytes of FFh.
- * The Target MAC block contains 16 duplications of the IEEEaddress
- * of the target, with no breaks or interruptions.
- *
- * The Password field is optional, but if present, contains either
- * 4 bytes or 6 bytes. The WakeOnLAN dissector was implemented to
- * dissect the password, if present, according to the command-line
- * format that ether-wake uses, therefore, if a 4-byte password is
- * present, it will be dissected as an IPv4 address and if a 6-byte
- * password is present, it will be dissected as an Ethernet address.
- *
- * <http://wiki.wireshark.org/WakeOnLAN>
- */
-
- while (data < end) {
- if (found >= 6) {
- if (*data == mac[found % 6])
- found++;
- else
- found = 0;
- }
-
- /* previous check might reset found counter */
- if (found < 6) {
- if (*data == 0xff)
- found++;
- else
- found = 0;
- }
-
- if (found == (6 + 16 * 6)) {
- return true;
- }
-
- data++;
- }
-
- return false;
-}
-#endif /* CONFIG_CARL9170FW_WOL_MAGIC_PACKET */
-
-#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)
-{
- bool __unused wake_up = false;
-
-#ifdef CONFIG_CARL9170FW_WOL_MAGIC_PACKET
- if (rx_filter & CARL9170_RX_FILTER_DATA)
- wake_up |= wlan_rx_wol_magic_packet(hdr, len);
-#endif /* CONFIG_CARL9170FW_WOL_MAGIC_PACKET */
-
-#ifdef CONFIG_CARL9170FW_WOL_PROBE_REQUEST
- if (rx_filter & CARL9170_RX_FILTER_MGMT)
- wake_up |= wlan_rx_wol_probe_ssid(hdr, len);
-#endif /* CONFIG_CARL9170FW_WOL_PROBE_REQUEST */
-
- if (wake_up) {
- fw.suspend_mode = CARL9170_AWAKE_HOST;
- set(AR9170_USB_REG_WAKE_UP, AR9170_USB_WAKE_UP_WAKE);
- }
-}
-#endif /* CONFIG_CARL9170FW_WOL */
-
static unsigned int wlan_rx_filter(struct dma_desc *desc)
{
struct ieee80211_hdr *hdr;
} 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;
rx_filter |= CARL9170_RX_FILTER_MGMT;
}
-#ifdef CONFIG_CARL9170FW_WOL
if (unlikely(fw.suspend_mode == CARL9170_HOST_SUSPENDED)) {
- wlan_rx_wol(rx_filter, hdr, min(data_len,
- (unsigned int)AR9170_BLOCK_SIZE));
+ wol_rx(rx_filter, hdr, min(data_len,
+ (unsigned int)AR9170_BLOCK_SIZE));
}
-#endif /* CONFIG_CARL9170FW_WOL */
#undef AR9170_RX_ERROR_BAD
/* ready to roll! */
_wlan_tx(desc);
+ __wlan_tx(desc);
wlan_trigger(BIT(super->s.queue));
}
}
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 */
static void handle_beacon_config(void)
fw.wlan.cab_flush_time = get_clock_counter();
#endif /* CONFIG_CARL9170FW_CAB_QUEUE */
+#ifdef CONFIG_CARL9170FW_RADIO_FUNCTIONS
rf_psm();
send_cmd_to_host(4, CARL9170_RSP_PRETBTT, 0x00,
(uint8_t *) &fw.phy.psm.state);
+#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 */
wlan_send_buffered_tx_status();
-#ifdef CONFIG_CARL9170FW_HANDLE_BACK_REQ
wlan_send_buffered_ba();
-#endif /* CONFIG_CARL9170FW_HANDLE_BACK_REQ */
+
+ wol_janitor();
}
void handle_wlan(void)
}
/* 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_PAYLOAD(desc) == fw.wlan.last_super[i])) {
projects / carl9170fw.git / blobdiff