diff options
Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2800lib.c')
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2800lib.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2800lib.c b/drivers/net/wireless/rt2x00/rt2800lib.c index 525267d4cc3e..28d82ce05527 100644 --- a/drivers/net/wireless/rt2x00/rt2800lib.c +++ b/drivers/net/wireless/rt2x00/rt2800lib.c @@ -281,6 +281,60 @@ int rt2800_wait_wpdma_ready(struct rt2x00_dev *rt2x00dev) } EXPORT_SYMBOL_GPL(rt2800_wait_wpdma_ready); +void rt2800_write_txwi(struct sk_buff *skb, struct txentry_desc *txdesc) +{ + __le32 *txwi = (__le32 *)(skb->data - TXWI_DESC_SIZE); + u32 word; + + /* + * Initialize TX Info descriptor + */ + rt2x00_desc_read(txwi, 0, &word); + rt2x00_set_field32(&word, TXWI_W0_FRAG, + test_bit(ENTRY_TXD_MORE_FRAG, &txdesc->flags)); + rt2x00_set_field32(&word, TXWI_W0_MIMO_PS, 0); + rt2x00_set_field32(&word, TXWI_W0_CF_ACK, 0); + rt2x00_set_field32(&word, TXWI_W0_TS, + test_bit(ENTRY_TXD_REQ_TIMESTAMP, &txdesc->flags)); + rt2x00_set_field32(&word, TXWI_W0_AMPDU, + test_bit(ENTRY_TXD_HT_AMPDU, &txdesc->flags)); + rt2x00_set_field32(&word, TXWI_W0_MPDU_DENSITY, txdesc->mpdu_density); + rt2x00_set_field32(&word, TXWI_W0_TX_OP, txdesc->txop); + rt2x00_set_field32(&word, TXWI_W0_MCS, txdesc->mcs); + rt2x00_set_field32(&word, TXWI_W0_BW, + test_bit(ENTRY_TXD_HT_BW_40, &txdesc->flags)); + rt2x00_set_field32(&word, TXWI_W0_SHORT_GI, + test_bit(ENTRY_TXD_HT_SHORT_GI, &txdesc->flags)); + rt2x00_set_field32(&word, TXWI_W0_STBC, txdesc->stbc); + rt2x00_set_field32(&word, TXWI_W0_PHYMODE, txdesc->rate_mode); + rt2x00_desc_write(txwi, 0, word); + + rt2x00_desc_read(txwi, 1, &word); + rt2x00_set_field32(&word, TXWI_W1_ACK, + test_bit(ENTRY_TXD_ACK, &txdesc->flags)); + rt2x00_set_field32(&word, TXWI_W1_NSEQ, + test_bit(ENTRY_TXD_GENERATE_SEQ, &txdesc->flags)); + rt2x00_set_field32(&word, TXWI_W1_BW_WIN_SIZE, txdesc->ba_size); + rt2x00_set_field32(&word, TXWI_W1_WIRELESS_CLI_ID, + test_bit(ENTRY_TXD_ENCRYPT, &txdesc->flags) ? + txdesc->key_idx : 0xff); + rt2x00_set_field32(&word, TXWI_W1_MPDU_TOTAL_BYTE_COUNT, + txdesc->length); + rt2x00_set_field32(&word, TXWI_W1_PACKETID, txdesc->queue + 1); + rt2x00_desc_write(txwi, 1, word); + + /* + * Always write 0 to IV/EIV fields, hardware will insert the IV + * from the IVEIV register when TXD_W3_WIV is set to 0. + * When TXD_W3_WIV is set to 1 it will use the IV data + * from the descriptor. The TXWI_W1_WIRELESS_CLI_ID indicates which + * crypto entry in the registers should be used to encrypt the frame. + */ + _rt2x00_desc_write(txwi, 2, 0 /* skbdesc->iv[0] */); + _rt2x00_desc_write(txwi, 3, 0 /* skbdesc->iv[1] */); +} +EXPORT_SYMBOL_GPL(rt2800_write_txwi); + #ifdef CONFIG_RT2X00_LIB_DEBUGFS const struct rt2x00debug rt2800_rt2x00debug = { .owner = THIS_MODULE, |