#include "printf.h"
#include "rf.h"
#include "linux/ieee80211.h"
+#include "rom.h"
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)
+{
+ unsigned int offset = qidx;
+ uint32_t status, trigger;
+
+ status = get(AR9170_MAC_REG_DMA_STATUS) >> 12;
+ trigger = get(AR9170_MAC_REG_DMA_TRIGGER) >> 12;
+
+ while (offset != 0) {
+ status >>= 4;
+ trigger >>= 4;
+ offset--;
+ }
+
+ status &= 0xf;
+ trigger &= 0xf;
+
+ if ((trigger == 0xa) && (status == 0x8)) {
+ DBG("UNSTUCK");
+ wlan_txunstuck(qidx);
+ } else {
+ DBG("UPDATE");
+ wlan_txupdate(qidx);
+ }
+}
+#endif /* CONFIG_CARL9170FW_DMA_QUEUE_BUMP */
+
#ifdef CONFIG_CARL9170FW_DEBUG
static void wlan_dump_queue(unsigned int qidx)
{
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 */
}
+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,
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_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 */
-
#ifdef CONFIG_CARL9170FW_CAB_QUEUE
if (unlikely(super->s.cab)) {
fw.wlan.cab_queue_len[super->s.vif_id]++;
}
#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
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!
*/
}
}
-static void handle_rx(void)
+#ifdef CONFIG_CARL9170FW_WOL
+static void wlan_rx_wol(struct ieee80211_hdr *hdr, unsigned int len)
{
- struct dma_desc *desc;
+ const unsigned char *data, *end, *mac;
+ unsigned int found = 0;
- 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 {
+ /*
+ * 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)) {
+ fw.suspend_mode = CARL9170_AWAKE_HOST;
+ return;
+ }
+
+ data++;
+ }
+
+ return;
+}
+#endif /* CONFIG_CARL9170FW_WOL */
+
+static unsigned int wlan_rx_filter(struct dma_desc *desc)
+{
+ struct ieee80211_hdr *hdr;
+ unsigned int data_len;
+ unsigned int rx_filter;
+ unsigned int mac_err;
+
+ data_len = ar9170_get_rx_mpdu_len(desc);
+ mac_err = ar9170_get_rx_macstatus_error(desc);
+
+#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;
+ }
+
+#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));
+ }
+#endif /* CONFIG_CARL9170FW_WOL */
+
+#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);
}
}
}
/* ready to roll! */
_wlan_tx(desc);
+ wlan_trigger(BIT(super->s.queue));
}
}
-static uint8_t *beacon_find_ie(uint8_t ie)
+static uint8_t *beacon_find_ie(uint8_t ie, void *addr,
+ const unsigned int len)
{
- struct ieee80211_mgmt *mgmt = getp(AR9170_MAC_REG_BCN_ADDR);
+ struct ieee80211_mgmt *mgmt = addr;
uint8_t *pos, *end;
- unsigned int len;
-
- len = get(AR9170_MAC_REG_BCN_LENGTH);
-
- if (len < FCS_LEN + sizeof(mgmt))
- return NULL;
pos = mgmt->u.beacon.variable;
end = (uint8_t *) ((unsigned long)mgmt + (len - FCS_LEN));
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;
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];
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);
}
#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)
} \
} 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);
#undef HANDLER
}
-static void wlan_dma_bump(unsigned int qidx)
-{
- unsigned int offset = qidx;
- uint32_t status, trigger;
-
- status = get(AR9170_MAC_REG_DMA_STATUS) >> 12;
- trigger = get(AR9170_MAC_REG_DMA_TRIGGER) >> 12;
-
- while (offset != 0) {
- status >>= 4;
- trigger >>= 4;
- offset--;
- }
-
- status &= 0xf;
- trigger &= 0xf;
-
- if ((trigger == 0xa) && (status == 0x8)) {
- DBG("UNSTUCK");
- wlan_txunstuck(qidx);
- } else {
- DBG("UPDATE");
- wlan_txupdate(qidx);
- }
-}
-
static void wlan_check_hang(void)
{
struct dma_desc *desc;
}
#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;
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
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);
}
projects / carl9170fw.git / blobdiff