#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)
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));
}
}
#endif /* CONFIG_CARL9170FW_DELAYED_TX */
_wlan_tx(desc);
+ wlan_trigger(BIT(super->s.queue));
}
#ifdef CONFIG_CARL9170FW_HANDLE_BACK_REQ
}
}
+#ifdef CONFIG_CARL9170FW_WOL
+static void wlan_rx_wol(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)) {
+ 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;
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;
/* ready to roll! */
_wlan_tx(desc);
+ wlan_trigger(BIT(super->s.queue));
}
}
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);
}
#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)
*/
wlan_dma_bump(i);
+ wlan_trigger(BIT(i));
}
#endif /* CONFIG_CARL9170FW_DMA_QUEUE_BUMP */
} else {
projects / carl9170fw.git / blobdiff