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iwlwifi: remove iwl4965_tx_cmd 

This patch removes iwl4965_tx_cmd function and splits its content to
iwl4965_hw_build_tx_cmd_rate, iwl4965_build_tx_cmd_basic,
and iwl4965_tl_get_stats function. The latest one will be deprecated
when traffic load will move to rate scale module.

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Tomas Winkler 2008-01-14 17:46:16 -08:00 committed by David S. Miller
parent 6a218f6f3b
commit 87e4f7dfe5
3 changed files with 55 additions and 82 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

112
drivers/net/wireless/iwlwifi/iwl-4965.c
View File

@ -2673,19 +2673,23 @@ void iwl4965_hw_build_tx_cmd_rate(struct iwl4965_priv *priv,
struct ieee80211_hdr *hdr, int sta_id,
int is_hcca)
{
u8 rate;
struct iwl4965_tx_cmd *tx = &cmd->cmd.tx;
u8 rts_retry_limit = 0;
u8 data_retry_limit = 0;
__le32 tx_flags;
u16 fc = le16_to_cpu(hdr->frame_control);
u8 rate_plcp;
u16 rate_flags = 0;
int rate_idx = min(ctrl->tx_rate & 0xffff, IWL_RATE_COUNT - 1);
tx_flags = cmd->cmd.tx.tx_flags;
rate = iwl4965_rates[ctrl->tx_rate].plcp;
rate_plcp = iwl4965_rates[rate_idx].plcp;
rts_retry_limit = (is_hcca) ?
RTS_HCCA_RETRY_LIMIT : RTS_DFAULT_RETRY_LIMIT;
if ((rate_idx >= IWL_FIRST_CCK_RATE) && (rate_idx <= IWL_LAST_CCK_RATE))
rate_flags |= RATE_MCS_CCK_MSK;
if (ieee80211_is_probe_response(fc)) {
data_retry_limit = 3;
if (data_retry_limit < rts_retry_limit)
@ -2696,26 +2700,38 @@ void iwl4965_hw_build_tx_cmd_rate(struct iwl4965_priv *priv,
if (priv->data_retry_limit != -1)
data_retry_limit = priv->data_retry_limit;
if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
if (ieee80211_is_data(fc)) {
tx->initial_rate_index = 0;
tx->tx_flags |= TX_CMD_FLG_STA_RATE_MSK;
} else {
switch (fc & IEEE80211_FCTL_STYPE) {
case IEEE80211_STYPE_AUTH:
case IEEE80211_STYPE_DEAUTH:
case IEEE80211_STYPE_ASSOC_REQ:
case IEEE80211_STYPE_REASSOC_REQ:
if (tx_flags & TX_CMD_FLG_RTS_MSK) {
tx_flags &= ~TX_CMD_FLG_RTS_MSK;
tx_flags |= TX_CMD_FLG_CTS_MSK;
if (tx->tx_flags & TX_CMD_FLG_RTS_MSK) {
tx->tx_flags &= ~TX_CMD_FLG_RTS_MSK;
tx->tx_flags |= TX_CMD_FLG_CTS_MSK;
}
break;
default:
break;
}
/* Alternate between antenna A and B for successive frames */
if (priv->use_ant_b_for_management_frame) {
priv->use_ant_b_for_management_frame = 0;
rate_flags |= RATE_MCS_ANT_B_MSK;
} else {
priv->use_ant_b_for_management_frame = 1;
rate_flags |= RATE_MCS_ANT_A_MSK;
}
}
cmd->cmd.tx.rts_retry_limit = rts_retry_limit;
cmd->cmd.tx.data_retry_limit = data_retry_limit;
cmd->cmd.tx.rate_n_flags = iwl4965_hw_set_rate_n_flags(rate, 0);
cmd->cmd.tx.tx_flags = tx_flags;
tx->rts_retry_limit = rts_retry_limit;
tx->data_retry_limit = data_retry_limit;
tx->rate_n_flags = iwl4965_hw_set_rate_n_flags(rate_plcp, rate_flags);
}
int iwl4965_hw_get_rx_read(struct iwl4965_priv *priv)
@ -3254,69 +3270,13 @@ static void iwl4965_bg_agg_work(struct work_struct *work)
spin_unlock_irqrestore(&priv->lq_mngr.lock, flags);
return;
}
#endif /*CONFIG_IWL4965_HT_AGG */
#endif /* CONFIG_IWL4965_HT */
int iwl4965_tx_cmd(struct iwl4965_priv *priv, struct iwl4965_cmd *out_cmd,
u8 sta_id, dma_addr_t txcmd_phys,
struct ieee80211_hdr *hdr, u8 hdr_len,
struct ieee80211_tx_control *ctrl, void *sta_in)
/* TODO: move this functionality to rate scaling */
void iwl4965_tl_get_stats(struct iwl4965_priv *priv,
struct ieee80211_hdr *hdr)
{
struct iwl4965_tx_cmd *tx = &out_cmd->cmd.tx;
dma_addr_t scratch_phys;
u8 unicast = 0;
u8 is_data = 1;
u16 fc;
u16 rate_flags;
int rate_index = min(ctrl->tx_rate & 0xffff, IWL_RATE_COUNT - 1);
#ifdef CONFIG_IWL4965_HT
#ifdef CONFIG_IWL4965_HT_AGG
__le16 *qc;
#endif /*CONFIG_IWL4965_HT_AGG */
#endif /* CONFIG_IWL4965_HT */
__le16 *qc = ieee80211_get_qos_ctrl(hdr);
unicast = !is_multicast_ether_addr(hdr->addr1);
fc = le16_to_cpu(hdr->frame_control);
if ((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA)
is_data = 0;
scratch_phys = txcmd_phys + sizeof(struct iwl4965_cmd_header) +
offsetof(struct iwl4965_tx_cmd, scratch);
tx->dram_lsb_ptr = cpu_to_le32(scratch_phys);
tx->dram_msb_ptr = iwl_get_dma_hi_address(scratch_phys);
/* Hard coded to start at the highest retry fallback position
* until the 4965 specific rate control algorithm is tied in */
tx->initial_rate_index = LINK_QUAL_MAX_RETRY_NUM - 1;
/* Alternate between antenna A and B for successive frames */
if (priv->use_ant_b_for_management_frame) {
priv->use_ant_b_for_management_frame = 0;
rate_flags = RATE_MCS_ANT_B_MSK;
} else {
priv->use_ant_b_for_management_frame = 1;
rate_flags = RATE_MCS_ANT_A_MSK;
}
if (!unicast || !is_data) {
if ((rate_index >= IWL_FIRST_CCK_RATE) &&
(rate_index <= IWL_LAST_CCK_RATE))
rate_flags |= RATE_MCS_CCK_MSK;
} else {
tx->initial_rate_index = 0;
tx->tx_flags |= TX_CMD_FLG_STA_RATE_MSK;
}
tx->rate_n_flags = iwl4965_hw_set_rate_n_flags(iwl4965_rates[rate_index].plcp,
rate_flags);
if (ieee80211_is_back_request(fc))
tx->tx_flags |= TX_CMD_FLG_ACK_MSK |
TX_CMD_FLG_IMM_BA_RSP_MASK;
#ifdef CONFIG_IWL4965_HT
#ifdef CONFIG_IWL4965_HT_AGG
qc = ieee80211_get_qos_ctrl(hdr);
if (qc &&
(priv->iw_mode != IEEE80211_IF_TYPE_IBSS)) {
u8 tid = 0;
@ -3334,11 +3294,11 @@ int iwl4965_tx_cmd(struct iwl4965_priv *priv, struct iwl4965_cmd *out_cmd,
spin_unlock_irqrestore(&priv->lq_mngr.lock, flags);
schedule_work(&priv->agg_work);
}
#endif
#endif
return 0;
}
#endif /*CONFIG_IWL4965_HT_AGG */
#endif /* CONFIG_IWL4965_HT */
/**
* sign_extend - Sign extend a value using specified bit as sign-bit
*

6
drivers/net/wireless/iwlwifi/iwl-4965.h
View File

@ -758,10 +758,6 @@ extern int iwl4965_tx_queue_update_wr_ptr(struct iwl4965_priv *priv,
extern void iwl4965_add_station(struct iwl4965_priv *priv, const u8 *addr,
int is_ap);
extern void iwl4965_set_rxon_chain(struct iwl4965_priv *priv);
extern int iwl4965_tx_cmd(struct iwl4965_priv *priv, struct iwl4965_cmd *out_cmd,
u8 sta_id, dma_addr_t txcmd_phys,
struct ieee80211_hdr *hdr, u8 hdr_len,
struct ieee80211_tx_control *ctrl, void *sta_in);
extern int iwl4965_alive_notify(struct iwl4965_priv *priv);
extern void iwl4965_update_rate_scaling(struct iwl4965_priv *priv, u8 mode);
extern void iwl4965_chain_noise_reset(struct iwl4965_priv *priv);
@ -789,6 +785,8 @@ extern int iwl4965_mac_ht_tx_agg_start(struct ieee80211_hw *hw, u8 *da,
extern int iwl4965_mac_ht_tx_agg_stop(struct ieee80211_hw *hw, u8 *da,
u16 tid, int generator);
extern void iwl4965_turn_off_agg(struct iwl4965_priv *priv, u8 tid);
extern void iwl4965_tl_get_stats(struct iwl4965_priv *priv,
struct ieee80211_hdr *hdr);
#endif /* CONFIG_IWL4965_HT_AGG */
#endif /*CONFIG_IWL4965_HT */
/* Structures, enum, and defines specific to the 4965 */

19
drivers/net/wireless/iwlwifi/iwl4965-base.c
View File

@ -2772,6 +2772,10 @@ static void iwl4965_build_tx_cmd_basic(struct iwl4965_priv *priv,
tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
}
if (ieee80211_is_back_request(fc))
tx_flags |= TX_CMD_FLG_ACK_MSK | TX_CMD_FLG_IMM_BA_RSP_MASK;
cmd->cmd.tx.sta_id = std_id;
if (ieee80211_get_morefrag(hdr))
tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
@ -2880,6 +2884,7 @@ static int iwl4965_tx_skb(struct iwl4965_priv *priv,
struct iwl4965_queue *q = NULL;
dma_addr_t phys_addr;
dma_addr_t txcmd_phys;
dma_addr_t scratch_phys;
struct iwl4965_cmd *out_cmd = NULL;
u16 len, idx, len_org;
u8 id, hdr_len, unicast;
@ -3053,8 +3058,18 @@ static int iwl4965_tx_skb(struct iwl4965_priv *priv,
/* set is_hcca to 0; it probably will never be implemented */
iwl4965_hw_build_tx_cmd_rate(priv, out_cmd, ctl, hdr, sta_id, 0);
iwl4965_tx_cmd(priv, out_cmd, sta_id, txcmd_phys,
hdr, hdr_len, ctl, NULL);
scratch_phys = txcmd_phys + sizeof(struct iwl4965_cmd_header) +
offsetof(struct iwl4965_tx_cmd, scratch);
out_cmd->cmd.tx.dram_lsb_ptr = cpu_to_le32(scratch_phys);
out_cmd->cmd.tx.dram_msb_ptr = iwl_get_dma_hi_address(scratch_phys);
#ifdef CONFIG_IWL4965_HT_AGG
#ifdef CONFIG_IWL4965_HT
/* TODO: move this functionality to rate scaling */
iwl4965_tl_get_stats(priv, hdr);
#endif /* CONFIG_IWL4965_HT_AGG */
#endif /*CONFIG_IWL4965_HT */
if (!ieee80211_get_morefrag(hdr)) {
txq->need_update = 1;