diff options
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-4965.c | 105 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-core.h | 9 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-dev.h | 21 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-hcmd.c | 4 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-tx.c | 662 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl4965-base.c | 581 |
6 files changed, 691 insertions, 691 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-4965.c b/drivers/net/wireless/iwlwifi/iwl-4965.c index 02bbe04309a..8f0852d058e 100644 --- a/drivers/net/wireless/iwlwifi/iwl-4965.c +++ b/drivers/net/wireless/iwlwifi/iwl-4965.c @@ -1933,76 +1933,6 @@ int iwl4965_hw_channel_switch(struct iwl_priv *priv, u16 channel) return rc; } -#define RTS_HCCA_RETRY_LIMIT 3 -#define RTS_DFAULT_RETRY_LIMIT 60 - -void iwl4965_hw_build_tx_cmd_rate(struct iwl_priv *priv, - struct iwl_cmd *cmd, - struct ieee80211_tx_control *ctrl, - struct ieee80211_hdr *hdr, int sta_id, - int is_hcca) -{ - struct iwl_tx_cmd *tx = &cmd->cmd.tx; - u8 rts_retry_limit = 0; - u8 data_retry_limit = 0; - u16 fc = le16_to_cpu(hdr->frame_control); - u8 rate_plcp; - u16 rate_flags = 0; - int rate_idx = min(ctrl->tx_rate->hw_value & 0xffff, IWL_RATE_COUNT - 1); - - rate_plcp = iwl_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) - rts_retry_limit = data_retry_limit; - } else - data_retry_limit = IWL_DEFAULT_TX_RETRY; - - if (priv->data_retry_limit != -1) - data_retry_limit = priv->data_retry_limit; - - - 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->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; - } - } - - 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); -} - static int iwl4965_shared_mem_rx_idx(struct iwl_priv *priv) { struct iwl4965_shared *s = priv->shared_virt; @@ -2046,40 +1976,6 @@ unsigned int iwl4965_hw_get_beacon_cmd(struct iwl_priv *priv, return (sizeof(*tx_beacon_cmd) + frame_size); } -int iwl4965_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv, void *ptr, - dma_addr_t addr, u16 len) -{ - int index, is_odd; - struct iwl_tfd_frame *tfd = ptr; - u32 num_tbs = IWL_GET_BITS(*tfd, num_tbs); - - /* Each TFD can point to a maximum 20 Tx buffers */ - if ((num_tbs >= MAX_NUM_OF_TBS) || (num_tbs < 0)) { - IWL_ERROR("Error can not send more than %d chunks\n", - MAX_NUM_OF_TBS); - return -EINVAL; - } - - index = num_tbs / 2; - is_odd = num_tbs & 0x1; - - if (!is_odd) { - tfd->pa[index].tb1_addr = cpu_to_le32(addr); - IWL_SET_BITS(tfd->pa[index], tb1_addr_hi, - iwl_get_dma_hi_address(addr)); - IWL_SET_BITS(tfd->pa[index], tb1_len, len); - } else { - IWL_SET_BITS(tfd->pa[index], tb2_addr_lo16, - (u32) (addr & 0xffff)); - IWL_SET_BITS(tfd->pa[index], tb2_addr_hi20, addr >> 16); - IWL_SET_BITS(tfd->pa[index], tb2_len, len); - } - - IWL_SET_BITS(*tfd, num_tbs, num_tbs + 1); - - return 0; -} - static int iwl4965_alloc_shared_mem(struct iwl_priv *priv) { priv->shared_virt = pci_alloc_consistent(priv->pci_dev, @@ -3711,7 +3607,6 @@ static struct iwl_hcmd_ops iwl4965_hcmd = { static struct iwl_hcmd_utils_ops iwl4965_hcmd_utils = { .get_hcmd_size = iwl4965_get_hcmd_size, - .enqueue_hcmd = iwl4965_enqueue_hcmd, .build_addsta_hcmd = iwl4965_build_addsta_hcmd, #ifdef CONFIG_IWL4965_RUN_TIME_CALIB .chain_noise_reset = iwl4965_chain_noise_reset, diff --git a/drivers/net/wireless/iwlwifi/iwl-core.h b/drivers/net/wireless/iwlwifi/iwl-core.h index dcf1e562af3..b159fd3c93c 100644 --- a/drivers/net/wireless/iwlwifi/iwl-core.h +++ b/drivers/net/wireless/iwlwifi/iwl-core.h @@ -87,7 +87,6 @@ struct iwl_hcmd_ops { }; struct iwl_hcmd_utils_ops { u16 (*get_hcmd_size)(u8 cmd_id, u16 len); - int (*enqueue_hcmd)(struct iwl_priv *priv, struct iwl_host_cmd *cmd); u16 (*build_addsta_hcmd)(const struct iwl_addsta_cmd *cmd, u8 *data); #ifdef CONFIG_IWLWIFI_RUN_TIME_CALIB void (*gain_computation)(struct iwl_priv *priv, @@ -208,10 +207,14 @@ void iwl_rx_allocate(struct iwl_priv *priv); * TX ******************************************************/ int iwl_txq_ctx_reset(struct iwl_priv *priv); +int iwl_tx_skb(struct iwl_priv *priv, + struct sk_buff *skb, struct ieee80211_tx_control *ctl); /* FIXME: remove when free Tx is fully merged into iwlcore */ int iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq); void iwl_hw_txq_ctx_free(struct iwl_priv *priv); - +int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv, void *tfd, + dma_addr_t addr, u16 len); +int iwl_txq_update_write_ptr(struct iwl_priv *priv, struct iwl_tx_queue *txq); /***************************************************** * S e n d i n g H o s t C o m m a n d s * *****************************************************/ @@ -227,6 +230,8 @@ int iwl_send_cmd_pdu_async(struct iwl_priv *priv, u8 id, u16 len, int (*callback)(struct iwl_priv *priv, struct iwl_cmd *cmd, struct sk_buff *skb)); + +int iwl_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd); /*************** DRIVER STATUS FUNCTIONS *****/ #define STATUS_HCMD_ACTIVE 0 /* host command in progress */ diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h index 7bd99f942f1..4106efd194e 100644 --- a/drivers/net/wireless/iwlwifi/iwl-dev.h +++ b/drivers/net/wireless/iwlwifi/iwl-dev.h @@ -689,8 +689,6 @@ extern int iwl4965_hw_set_hw_params(struct iwl_priv *priv); extern int iwl4965_hw_nic_stop_master(struct iwl_priv *priv); extern void iwl4965_hw_txq_ctx_stop(struct iwl_priv *priv); extern int iwl4965_hw_nic_reset(struct iwl_priv *priv); -extern int iwl4965_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv, void *tfd, - dma_addr_t addr, u16 len); extern int iwl4965_hw_get_temperature(struct iwl_priv *priv); extern unsigned int iwl4965_hw_get_beacon_cmd(struct iwl_priv *priv, struct iwl_frame *frame, u8 rate); @@ -719,6 +717,25 @@ extern u8 iwl_find_station(struct iwl_priv *priv, const u8 *bssid); extern int iwl4965_hw_channel_switch(struct iwl_priv *priv, u16 channel); extern int iwl4965_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index); extern int iwl_queue_space(const struct iwl_queue *q); +static inline int iwl_queue_used(const struct iwl_queue *q, int i) +{ + return q->write_ptr > q->read_ptr ? + (i >= q->read_ptr && i < q->write_ptr) : + !(i < q->read_ptr && i >= q->write_ptr); +} + + +static inline u8 get_cmd_index(struct iwl_queue *q, u32 index, int is_huge) +{ + /* This is for scan command, the big buffer at end of command array */ + if (is_huge) + return q->n_window; /* must be power of 2 */ + + /* Otherwise, use normal size buffers */ + return index & (q->n_window - 1); +} + + struct iwl_priv; extern void iwl4965_radio_kill_sw(struct iwl_priv *priv, int disable_radio); diff --git a/drivers/net/wireless/iwlwifi/iwl-hcmd.c b/drivers/net/wireless/iwlwifi/iwl-hcmd.c index 0412adf6ef8..dab4a0eff96 100644 --- a/drivers/net/wireless/iwlwifi/iwl-hcmd.c +++ b/drivers/net/wireless/iwlwifi/iwl-hcmd.c @@ -139,7 +139,7 @@ static int iwl_send_cmd_async(struct iwl_priv *priv, struct iwl_host_cmd *cmd) if (test_bit(STATUS_EXIT_PENDING, &priv->status)) return -EBUSY; - ret = priv->cfg->ops->utils->enqueue_hcmd(priv, cmd); + ret = iwl_enqueue_hcmd(priv, cmd); if (ret < 0) { IWL_ERROR("Error sending %s: enqueue_hcmd failed: %d\n", get_cmd_string(cmd->id), ret); @@ -170,7 +170,7 @@ int iwl_send_cmd_sync(struct iwl_priv *priv, struct iwl_host_cmd *cmd) if (cmd->meta.flags & CMD_WANT_SKB) cmd->meta.source = &cmd->meta; - cmd_idx = priv->cfg->ops->utils->enqueue_hcmd(priv, cmd); + cmd_idx = iwl_enqueue_hcmd(priv, cmd); if (cmd_idx < 0) { ret = cmd_idx; IWL_ERROR("Error sending %s: enqueue_hcmd failed: %d\n", diff --git a/drivers/net/wireless/iwlwifi/iwl-tx.c b/drivers/net/wireless/iwlwifi/iwl-tx.c index 870d257bded..a37ced58c66 100644 --- a/drivers/net/wireless/iwlwifi/iwl-tx.c +++ b/drivers/net/wireless/iwlwifi/iwl-tx.c @@ -27,6 +27,7 @@ * *****************************************************************************/ +#include <linux/etherdevice.h> #include <net/mac80211.h> #include "iwl-eeprom.h" #include "iwl-dev.h" @@ -95,6 +96,89 @@ int iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq) } EXPORT_SYMBOL(iwl_hw_txq_free_tfd); + +int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv, void *ptr, + dma_addr_t addr, u16 len) +{ + int index, is_odd; + struct iwl_tfd_frame *tfd = ptr; + u32 num_tbs = IWL_GET_BITS(*tfd, num_tbs); + + /* Each TFD can point to a maximum 20 Tx buffers */ + if ((num_tbs >= MAX_NUM_OF_TBS) || (num_tbs < 0)) { + IWL_ERROR("Error can not send more than %d chunks\n", + MAX_NUM_OF_TBS); + return -EINVAL; + } + + index = num_tbs / 2; + is_odd = num_tbs & 0x1; + + if (!is_odd) { + tfd->pa[index].tb1_addr = cpu_to_le32(addr); + IWL_SET_BITS(tfd->pa[index], tb1_addr_hi, + iwl_get_dma_hi_address(addr)); + IWL_SET_BITS(tfd->pa[index], tb1_len, len); + } else { + IWL_SET_BITS(tfd->pa[index], tb2_addr_lo16, + (u32) (addr & 0xffff)); + IWL_SET_BITS(tfd->pa[index], tb2_addr_hi20, addr >> 16); + IWL_SET_BITS(tfd->pa[index], tb2_len, len); + } + + IWL_SET_BITS(*tfd, num_tbs, num_tbs + 1); + + return 0; +} +EXPORT_SYMBOL(iwl_hw_txq_attach_buf_to_tfd); + +/** + * iwl_txq_update_write_ptr - Send new write index to hardware + */ +int iwl_txq_update_write_ptr(struct iwl_priv *priv, struct iwl_tx_queue *txq) +{ + u32 reg = 0; + int ret = 0; + int txq_id = txq->q.id; + + if (txq->need_update == 0) + return ret; + + /* if we're trying to save power */ + if (test_bit(STATUS_POWER_PMI, &priv->status)) { + /* wake up nic if it's powered down ... + * uCode will wake up, and interrupt us again, so next + * time we'll skip this part. */ + reg = iwl_read32(priv, CSR_UCODE_DRV_GP1); + + if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) { + IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg); + iwl_set_bit(priv, CSR_GP_CNTRL, + CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); + return ret; + } + + /* restore this queue's parameters in nic hardware. */ + ret = iwl_grab_nic_access(priv); + if (ret) + return ret; + iwl_write_direct32(priv, HBUS_TARG_WRPTR, + txq->q.write_ptr | (txq_id << 8)); + iwl_release_nic_access(priv); + + /* else not in power-save mode, uCode will never sleep when we're + * trying to tx (during RFKILL, we're not trying to tx). */ + } else + iwl_write32(priv, HBUS_TARG_WRPTR, + txq->q.write_ptr | (txq_id << 8)); + + txq->need_update = 0; + + return ret; +} +EXPORT_SYMBOL(iwl_txq_update_write_ptr); + + /** * iwl_tx_queue_free - Deallocate DMA queue. * @txq: Transmit queue to deallocate. @@ -137,6 +221,47 @@ static void iwl_tx_queue_free(struct iwl_priv *priv, struct iwl_tx_queue *txq) memset(txq, 0, sizeof(*txq)); } +/*************** DMA-QUEUE-GENERAL-FUNCTIONS ***** + * DMA services + * + * Theory of operation + * + * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer + * of buffer descriptors, each of which points to one or more data buffers for + * the device to read from or fill. Driver and device exchange status of each + * queue via "read" and "write" pointers. Driver keeps minimum of 2 empty + * entries in each circular buffer, to protect against confusing empty and full + * queue states. + * + * The device reads or writes the data in the queues via the device's several + * DMA/FIFO channels. Each queue is mapped to a single DMA channel. + * + * For Tx queue, there are low mark and high mark limits. If, after queuing + * the packet for Tx, free space become < low mark, Tx queue stopped. When + * reclaiming packets (on 'tx done IRQ), if free space become > high mark, + * Tx queue resumed. + * + * See more detailed info in iwl-4965-hw.h. + ***************************************************/ + +int iwl_queue_space(const struct iwl_queue *q) +{ + int s = q->read_ptr - q->write_ptr; + + if (q->read_ptr > q->write_ptr) + s -= q->n_bd; + + if (s <= 0) + s += q->n_window; + /* keep some reserve to not confuse empty and full situations */ + s -= 2; + if (s < 0) + s = 0; + return s; +} +EXPORT_SYMBOL(iwl_queue_space); + + /** * iwl_hw_txq_ctx_free - Free TXQ Context * @@ -371,3 +496,540 @@ int iwl_txq_ctx_reset(struct iwl_priv *priv) error_kw: return ret; } + +/* + * handle build REPLY_TX command notification. + */ +static void iwl_tx_cmd_build_basic(struct iwl_priv *priv, + struct iwl_tx_cmd *tx_cmd, + struct ieee80211_tx_control *ctrl, + struct ieee80211_hdr *hdr, + int is_unicast, u8 std_id) +{ + u16 fc = le16_to_cpu(hdr->frame_control); + __le32 tx_flags = tx_cmd->tx_flags; + + tx_cmd->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; + if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) { + tx_flags |= TX_CMD_FLG_ACK_MSK; + if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) + tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK; + if (ieee80211_is_probe_response(fc) && + !(le16_to_cpu(hdr->seq_ctrl) & 0xf)) + tx_flags |= TX_CMD_FLG_TSF_MSK; + } else { + tx_flags &= (~TX_CMD_FLG_ACK_MSK); + 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; + + + tx_cmd->sta_id = std_id; + if (ieee80211_get_morefrag(hdr)) + tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK; + + if (ieee80211_is_qos_data(fc)) { + u8 *qc = ieee80211_get_qos_ctrl(hdr, ieee80211_get_hdrlen(fc)); + tx_cmd->tid_tspec = qc[0] & 0xf; + tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK; + } else { + tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK; + } + + if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) { + tx_flags |= TX_CMD_FLG_RTS_MSK; + tx_flags &= ~TX_CMD_FLG_CTS_MSK; + } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) { + tx_flags &= ~TX_CMD_FLG_RTS_MSK; + tx_flags |= TX_CMD_FLG_CTS_MSK; + } + + if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK)) + tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK; + + tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK); + if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) { + if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ || + (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ) + tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(3); + else + tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(2); + } else { + tx_cmd->timeout.pm_frame_timeout = 0; + } + + tx_cmd->driver_txop = 0; + tx_cmd->tx_flags = tx_flags; + tx_cmd->next_frame_len = 0; +} + +#define RTS_HCCA_RETRY_LIMIT 3 +#define RTS_DFAULT_RETRY_LIMIT 60 + +static void iwl_tx_cmd_build_rate(struct iwl_priv *priv, + struct iwl_tx_cmd *tx_cmd, + struct ieee80211_tx_control *ctrl, + u16 fc, int sta_id, + int is_hcca) +{ + u8 rts_retry_limit = 0; + u8 data_retry_limit = 0; + u8 rate_plcp; + u16 rate_flags = 0; + int rate_idx = min(ctrl->tx_rate->hw_value & 0xffff, IWL_RATE_COUNT - 1); + + rate_plcp = iwl_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) + rts_retry_limit = data_retry_limit; + } else + data_retry_limit = IWL_DEFAULT_TX_RETRY; + + if (priv->data_retry_limit != -1) + data_retry_limit = priv->data_retry_limit; + + + if (ieee80211_is_data(fc)) { + tx_cmd->initial_rate_index = 0; + tx_cmd->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_cmd->tx_flags & TX_CMD_FLG_RTS_MSK) { + tx_cmd->tx_flags &= ~TX_CMD_FLG_RTS_MSK; + tx_cmd->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; + } + } + + tx_cmd->rts_retry_limit = rts_retry_limit; + tx_cmd->data_retry_limit = data_retry_limit; + tx_cmd->rate_n_flags = iwl4965_hw_set_rate_n_flags(rate_plcp, rate_flags); +} + +static void iwl_tx_cmd_build_hwcrypto(struct iwl_priv *priv, + struct ieee80211_tx_control *ctl, + struct iwl_tx_cmd *tx_cmd, + struct sk_buff *skb_frag, + int sta_id) +{ + struct iwl_hw_key *keyinfo = &priv->stations[sta_id].keyinfo; + struct iwl_wep_key *wepkey; + int keyidx = 0; + + BUG_ON(ctl->hw_key->hw_key_idx > 3); + + switch (keyinfo->alg) { + case ALG_CCMP: + tx_cmd->sec_ctl = TX_CMD_SEC_CCM; + memcpy(tx_cmd->key, keyinfo->key, keyinfo->keylen); + if (ctl->flags & IEEE80211_TXCTL_AMPDU) + tx_cmd->tx_flags |= TX_CMD_FLG_AGG_CCMP_MSK; + IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n"); + break; + + case ALG_TKIP: + tx_cmd->sec_ctl = TX_CMD_SEC_TKIP; + ieee80211_get_tkip_key(keyinfo->conf, skb_frag, + IEEE80211_TKIP_P2_KEY, tx_cmd->key); + IWL_DEBUG_TX("tx_cmd with tkip hwcrypto\n"); + break; + + case ALG_WEP: + wepkey = &priv->wep_keys[ctl->hw_key->hw_key_idx]; + tx_cmd->sec_ctl = 0; + if (priv->default_wep_key) { + /* the WEP key was sent as static */ + keyidx = ctl->hw_key->hw_key_idx; + memcpy(&tx_cmd->key[3], wepkey->key, + wepkey->key_size); + if (wepkey->key_size == WEP_KEY_LEN_128) + tx_cmd->sec_ctl |= TX_CMD_SEC_KEY128; + } else { + /* the WEP key was sent as dynamic */ + keyidx = keyinfo->keyidx; + memcpy(&tx_cmd->key[3], keyinfo->key, + keyinfo->keylen); + if (keyinfo->keylen == WEP_KEY_LEN_128) + tx_cmd->sec_ctl |= TX_CMD_SEC_KEY128; + } + + tx_cmd->sec_ctl |= (TX_CMD_SEC_WEP | + (keyidx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT); + + IWL_DEBUG_TX("Configuring packet for WEP encryption " + "with key %d\n", keyidx); + break; + + default: + printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg); + break; + } +} + +static void iwl_update_tx_stats(struct iwl_priv *priv, u16 fc, u16 len) +{ + /* 0 - mgmt, 1 - cnt, 2 - data */ + int idx = (fc & IEEE80211_FCTL_FTYPE) >> 2; + priv->tx_stats[idx].cnt++; + priv->tx_stats[idx].bytes += len; +} + +/* + * start REPLY_TX command process + */ +int iwl_tx_skb(struct iwl_priv *priv, + struct sk_buff *skb, struct ieee80211_tx_control *ctl) +{ + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; + struct iwl_tfd_frame *tfd; + u32 *control_flags; + int txq_id = ctl->queue; + struct iwl_tx_queue *txq = NULL; + struct iwl_queue *q = NULL; + dma_addr_t phys_addr; + dma_addr_t txcmd_phys; + dma_addr_t scratch_phys; + struct iwl_cmd *out_cmd = NULL; + struct iwl_tx_cmd *tx_cmd; + u16 len, idx, len_org; + u16 seq_number = 0; + u8 id, hdr_len, unicast; + u8 sta_id; + u16 fc; + u8 wait_write_ptr = 0; + u8 tid = 0; + u8 *qc = NULL; + unsigned long flags; + int ret; + + spin_lock_irqsave(&priv->lock, flags); + if (iwl_is_rfkill(priv)) { + IWL_DEBUG_DROP("Dropping - RF KILL\n"); + goto drop_unlock; + } + + if (!priv->vif) { + IWL_DEBUG_DROP("Dropping - !priv->vif\n"); + goto drop_unlock; + } + + if ((ctl->tx_rate->hw_value & 0xFF) == IWL_INVALID_RATE) { + IWL_ERROR("ERROR: No TX rate available.\n"); + goto drop_unlock; + } + + unicast = !is_multicast_ether_addr(hdr->addr1); + id = 0; + + fc = le16_to_cpu(hdr->frame_control); + +#ifdef CONFIG_IWLWIFI_DEBUG + if (ieee80211_is_auth(fc)) + IWL_DEBUG_TX("Sending AUTH frame\n"); + else if (ieee80211_is_assoc_request(fc)) + IWL_DEBUG_TX("Sending ASSOC frame\n"); + else if (ieee80211_is_reassoc_request(fc)) + IWL_DEBUG_TX("Sending REASSOC frame\n"); +#endif + + /* drop all data frame if we are not associated */ + if (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) && + (!iwl_is_associated(priv) || + ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && !priv->assoc_id) || + !priv->assoc_station_added)) { + IWL_DEBUG_DROP("Dropping - !iwl_is_associated\n"); + goto drop_unlock; + } + + spin_unlock_irqrestore(&priv->lock, flags); + + hdr_len = ieee80211_get_hdrlen(fc); + + /* Find (or create) index into station table for destination station */ + sta_id = iwl_get_sta_id(priv, hdr); + if (sta_id == IWL_INVALID_STATION) { + DECLARE_MAC_BUF(mac); + + IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n", + print_mac(mac, hdr->addr1)); + goto drop; + } + + IWL_DEBUG_TX("station Id %d\n", sta_id); + + if (ieee80211_is_qos_data(fc)) { + qc = ieee80211_get_qos_ctrl(hdr, hdr_len); + tid = qc[0] & 0xf; + seq_number = priv->stations[sta_id].tid[tid].seq_number & + IEEE80211_SCTL_SEQ; + hdr->seq_ctrl = cpu_to_le16(seq_number) | + (hdr->seq_ctrl & + __constant_cpu_to_le16(IEEE80211_SCTL_FRAG)); + seq_number += 0x10; +#ifdef CONFIG_IWL4965_HT + /* aggregation is on for this <sta,tid> */ + if (ctl->flags & IEEE80211_TXCTL_AMPDU) + txq_id = priv->stations[sta_id].tid[tid].agg.txq_id; + priv->stations[sta_id].tid[tid].tfds_in_queue++; +#endif /* CONFIG_IWL4965_HT */ + } + + /* Descriptor for chosen Tx queue */ + txq = &priv->txq[txq_id]; + q = &txq->q; + + spin_lock_irqsave(&priv->lock, flags); + + /* Set up first empty TFD within this queue's circular TFD buffer */ + tfd = &txq->bd[q->write_ptr]; + memset(tfd, 0, sizeof(*tfd)); + control_flags = (u32 *) tfd; + idx = get_cmd_index(q, q->write_ptr, 0); + + /* Set up driver data for this TFD */ + memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info)); + txq->txb[q->write_ptr].skb[0] = skb; + memcpy(&(txq->txb[q->write_ptr].status.control), + ctl, sizeof(struct ieee80211_tx_control)); + + /* Set up first empty entry in queue's array of Tx/cmd buffers */ + out_cmd = &txq->cmd[idx]; + tx_cmd = &out_cmd->cmd.tx; + memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr)); + memset(tx_cmd, 0, sizeof(struct iwl_tx_cmd)); + + /* + * Set up the Tx-command (not MAC!) header. + * Store the chosen Tx queue and TFD index within the sequence field; + * after Tx, uCode's Tx response will return this value so driver can + * locate the frame within the tx queue and do post-tx processing. + */ + out_cmd->hdr.cmd = REPLY_TX; + out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) | + INDEX_TO_SEQ(q->write_ptr))); + + /* Copy MAC header from skb into command buffer */ + memcpy(tx_cmd->hdr, hdr, hdr_len); + + /* + * Use the first empty entry in this queue's command buffer array + * to contain the Tx command and MAC header concatenated together + * (payload data will be in another buffer). + * Size of this varies, due to varying MAC header length. + * If end is not dword aligned, we'll have 2 extra bytes at the end + * of the MAC header (device reads on dword boundaries). + * We'll tell device about this padding later. + */ + len = sizeof(struct iwl_tx_cmd) + + sizeof(struct iwl_cmd_header) + hdr_len; + + len_org = len; + len = (len + 3) & ~3; + + if (len_org != len) + len_org = 1; + else + len_org = 0; + + /* Physical address of this Tx command's header (not MAC header!), + * within command buffer array. */ + txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl_cmd) * idx + + offsetof(struct iwl_cmd, hdr); + + /* Add buffer containing Tx command and MAC(!) header to TFD's + * first entry */ + iwl_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len); + + if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT)) + iwl_tx_cmd_build_hwcrypto(priv, ctl, tx_cmd, skb, sta_id); + + /* Set up TFD's 2nd entry to point directly to remainder of skb, + * if any (802.11 null frames have no payload). */ + len = skb->len - hdr_len; + if (len) { + phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len, + len, PCI_DMA_TODEVICE); + iwl_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len); + } + + /* Tell NIC about any 2-byte padding after MAC header */ + if (len_org) + tx_cmd->tx_flags |= TX_CMD_FLG_MH_PAD_MSK; + + /* Total # bytes to be transmitted */ + len = (u16)skb->len; + tx_cmd->len = cpu_to_le16(len); + /* TODO need this for burst mode later on */ + iwl_tx_cmd_build_basic(priv, tx_cmd, ctl, hdr, unicast, sta_id); + + /* set is_hcca to 0; it probably will never be implemented */ + iwl_tx_cmd_build_rate(priv, tx_cmd, ctl, fc, sta_id, 0); + + iwl_update_tx_stats(priv, fc, len); + + scratch_phys = txcmd_phys + sizeof(struct iwl_cmd_header) + + offsetof(struct iwl_tx_cmd, scratch); + tx_cmd->dram_lsb_ptr = cpu_to_le32(scratch_phys); + tx_cmd->dram_msb_ptr = iwl_get_dma_hi_address(scratch_phys); + + if (!ieee80211_get_morefrag(hdr)) { + txq->need_update = 1; + if (qc) + priv->stations[sta_id].tid[tid].seq_number = seq_number; + } else { + wait_write_ptr = 1; + txq->need_update = 0; + } + + iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx_cmd, sizeof(*tx_cmd)); + + iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx_cmd->hdr, hdr_len); + + /* Set up entry for this TFD in Tx byte-count array */ + priv->cfg->ops->lib->txq_update_byte_cnt_tbl(priv, txq, len); + + /* Tell device the write index *just past* this latest filled TFD */ + q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd); + ret = iwl_txq_update_write_ptr(priv, txq); + spin_unlock_irqrestore(&priv->lock, flags); + + if (ret) + return ret; + + if ((iwl_queue_space(q) < q->high_mark) + && priv->mac80211_registered) { + if (wait_write_ptr) { + spin_lock_irqsave(&priv->lock, flags); + txq->need_update = 1; + iwl_txq_update_write_ptr(priv, txq); + spin_unlock_irqrestore(&priv->lock, flags); + } + + ieee80211_stop_queue(priv->hw, ctl->queue); + } + + return 0; + +drop_unlock: + spin_unlock_irqrestore(&priv->lock, flags); +drop: + return -1; +} +EXPORT_SYMBOL(iwl_tx_skb); + +/*************** HOST COMMAND QUEUE FUNCTIONS *****/ + +/** + * iwl_enqueue_hcmd - enqueue a uCode command + * @priv: device private data point + * @cmd: a point to the ucode command structure + * + * The function returns < 0 values to indicate the operation is + * failed. On success, it turns the index (> 0) of command in the + * command queue. + */ +int iwl_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd) +{ + struct iwl_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM]; + struct iwl_queue *q = &txq->q; + struct iwl_tfd_frame *tfd; + u32 *control_flags; + struct iwl_cmd *out_cmd; + u32 idx; + u16 fix_size; + dma_addr_t phys_addr; + int ret; + unsigned long flags; + + cmd->len = priv->cfg->ops->utils->get_hcmd_size(cmd->id, cmd->len); + fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr)); + + /* If any of the command structures end up being larger than + * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then + * we will need to increase the size of the TFD entries */ + BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) && + !(cmd->meta.flags & CMD_SIZE_HUGE)); + + if (iwl_is_rfkill(priv)) { + IWL_DEBUG_INFO("Not sending command - RF KILL"); + return -EIO; + } + + if (iwl_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) { + IWL_ERROR("No space for Tx\n"); + return -ENOSPC; + } + + spin_lock_irqsave(&priv->hcmd_lock, flags); + + tfd = &txq->bd[q->write_ptr]; + memset(tfd, 0, sizeof(*tfd)); + + control_flags = (u32 *) tfd; + + idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE); + out_cmd = &txq->cmd[idx]; + + out_cmd->hdr.cmd = cmd->id; + memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta)); + memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len); + + /* At this point, the out_cmd now has all of the incoming cmd + * information */ + + out_cmd->hdr.flags = 0; + out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) | + INDEX_TO_SEQ(q->write_ptr)); + if (out_cmd->meta.flags & CMD_SIZE_HUGE) + out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME); + + phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx + + offsetof(struct iwl_cmd, hdr); + iwl_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size); + + IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, " + "%d bytes at %d[%d]:%d\n", + get_cmd_string(out_cmd->hdr.cmd), + out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence), + fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM); + + txq->need_update = 1; + + /* Set up entry in queue's byte count circular buffer */ + priv->cfg->ops->lib->txq_update_byte_cnt_tbl(priv, txq, 0); + + /* Increment and update queue's write index */ + q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd); + ret = iwl_txq_update_write_ptr(priv, txq); + + spin_unlock_irqrestore(&priv->hcmd_lock, flags); + return ret ? ret : idx; +} + diff --git a/drivers/net/wireless/iwlwifi/iwl4965-base.c b/drivers/net/wireless/iwlwifi/iwl4965-base.c index e3f872e3381..dd2fd405530 100644 --- a/drivers/net/wireless/iwlwifi/iwl4965-base.c +++ b/drivers/net/wireless/iwlwifi/iwl4965-base.c @@ -53,8 +53,6 @@ #include "iwl-sta.h" #include "iwl-calib.h" -static int iwl_txq_update_write_ptr(struct iwl_priv *priv, - struct iwl_tx_queue *txq); /****************************************************************************** * @@ -135,69 +133,6 @@ static const char *iwl4965_escape_essid(const char *essid, u8 essid_len) return escaped; } - -/*************** DMA-QUEUE-GENERAL-FUNCTIONS ***** - * DMA services - * - * Theory of operation - * - * A Tx or Rx queue resides in host DRAM, and is comprised of a circular buffer - * of buffer descriptors, each of which points to one or more data buffers for - * the device to read from or fill. Driver and device exchange status of each - * queue via "read" and "write" pointers. Driver keeps minimum of 2 empty - * entries in each circular buffer, to protect against confusing empty and full - * queue states. - * - * The device reads or writes the data in the queues via the device's several - * DMA/FIFO channels. Each queue is mapped to a single DMA channel. - * - * For Tx queue, there are low mark and high mark limits. If, after queuing - * the packet for Tx, free space become < low mark, Tx queue stopped. When - * reclaiming packets (on 'tx done IRQ), if free space become > high mark, - * Tx queue resumed. - * - * The 4965 operates with up to 17 queues: One receive queue, one transmit - * queue (#4) for sending commands to the device firmware, and 15 other - * Tx queues that may be mapped to prioritized Tx DMA/FIFO channels. - * - * See more detailed info in iwl-4965-hw.h. - ***************************************************/ - -int iwl_queue_space(const struct iwl_queue *q) -{ - int s = q->read_ptr - q->write_ptr; - - if (q->read_ptr > q->write_ptr) - s -= q->n_bd; - - if (s <= 0) - s += q->n_window; - /* keep some reserve to not confuse empty and full situations */ - s -= 2; - if (s < 0) - s = 0; - return s; -} - - -static inline int iwl_queue_used(const struct iwl_queue *q, int i) -{ - return q->write_ptr > q->read_ptr ? - (i >= q->read_ptr && i < q->write_ptr) : - !(i < q->read_ptr && i >= q->write_ptr); -} - -static inline u8 get_cmd_index(struct iwl_queue *q, u32 index, int is_huge) -{ - /* This is for scan command, the big buffer at end of command array */ - if (is_huge) - return q->n_window; /* must be power of 2 */ - - /* Otherwise, use normal size buffers */ - return index & (q->n_window - 1); -} - - /*************** STATION TABLE MANAGEMENT **** * mac80211 should be examined to determine if sta_info is duplicating * the functionality provided here @@ -250,95 +185,6 @@ out: -/*************** HOST COMMAND QUEUE FUNCTIONS *****/ - -/** - * iwl4965_enqueue_hcmd - enqueue a uCode command - * @priv: device private data point - * @cmd: a point to the ucode command structure - * - * The function returns < 0 values to indicate the operation is - * failed. On success, it turns the index (> 0) of command in the - * command queue. - */ -int iwl4965_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd) -{ - struct iwl_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM]; - struct iwl_queue *q = &txq->q; - struct iwl_tfd_frame *tfd; - u32 *control_flags; - struct iwl_cmd *out_cmd; - u32 idx; - u16 fix_size; - dma_addr_t phys_addr; - int ret; - unsigned long flags; - - cmd->len = priv->cfg->ops->utils->get_hcmd_size(cmd->id, cmd->len); - fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr)); - - /* If any of the command structures end up being larger than - * the TFD_MAX_PAYLOAD_SIZE, and it sent as a 'small' command then - * we will need to increase the size of the TFD entries */ - BUG_ON((fix_size > TFD_MAX_PAYLOAD_SIZE) && - !(cmd->meta.flags & CMD_SIZE_HUGE)); - - if (iwl_is_rfkill(priv)) { - IWL_DEBUG_INFO("Not sending command - RF KILL"); - return -EIO; - } - - if (iwl_queue_space(q) < ((cmd->meta.flags & CMD_ASYNC) ? 2 : 1)) { - IWL_ERROR("No space for Tx\n"); - return -ENOSPC; - } - - spin_lock_irqsave(&priv->hcmd_lock, flags); - - tfd = &txq->bd[q->write_ptr]; - memset(tfd, 0, sizeof(*tfd)); - - control_flags = (u32 *) tfd; - - idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE); - out_cmd = &txq->cmd[idx]; - - out_cmd->hdr.cmd = cmd->id; - memcpy(&out_cmd->meta, &cmd->meta, sizeof(cmd->meta)); - memcpy(&out_cmd->cmd.payload, cmd->data, cmd->len); - - /* At this point, the out_cmd now has all of the incoming cmd - * information */ - - out_cmd->hdr.flags = 0; - out_cmd->hdr.sequence = cpu_to_le16(QUEUE_TO_SEQ(IWL_CMD_QUEUE_NUM) | - INDEX_TO_SEQ(q->write_ptr)); - if (out_cmd->meta.flags & CMD_SIZE_HUGE) - out_cmd->hdr.sequence |= cpu_to_le16(SEQ_HUGE_FRAME); - - phys_addr = txq->dma_addr_cmd + sizeof(txq->cmd[0]) * idx + - offsetof(struct iwl_cmd, hdr); - iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size); - - IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, " - "%d bytes at %d[%d]:%d\n", - get_cmd_string(out_cmd->hdr.cmd), - out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence), - fix_size, q->write_ptr, idx, IWL_CMD_QUEUE_NUM); - - txq->need_update = 1; - - /* Set up entry in queue's byte count circular buffer */ - priv->cfg->ops->lib->txq_update_byte_cnt_tbl(priv, txq, 0); - - /* Increment and update queue's write index */ - q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd); - ret = iwl_txq_update_write_ptr(priv, txq); - - spin_unlock_irqrestore(&priv->hcmd_lock, flags); - return ret ? ret : idx; -} - static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt) { struct iwl_rxon_cmd *rxon = &priv->staging_rxon; @@ -1453,385 +1299,6 @@ static int iwl4965_set_mode(struct iwl_priv *priv, int mode) return 0; } -static void iwl4965_build_tx_cmd_hwcrypto(struct iwl_priv *priv, - struct ieee80211_tx_control *ctl, - struct iwl_cmd *cmd, - struct sk_buff *skb_frag, - int sta_id) -{ - struct iwl_hw_key *keyinfo = &priv->stations[sta_id].keyinfo; - struct iwl_wep_key *wepkey; - int keyidx = 0; - - BUG_ON(ctl->hw_key->hw_key_idx > 3); - - switch (keyinfo->alg) { - case ALG_CCMP: - cmd->cmd.tx.sec_ctl = TX_CMD_SEC_CCM; - memcpy(cmd->cmd.tx.key, keyinfo->key, keyinfo->keylen); - if (ctl->flags & IEEE80211_TXCTL_AMPDU) - cmd->cmd.tx.tx_flags |= TX_CMD_FLG_AGG_CCMP_MSK; - IWL_DEBUG_TX("tx_cmd with aes hwcrypto\n"); - break; - - case ALG_TKIP: - cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP; - ieee80211_get_tkip_key(keyinfo->conf, skb_frag, - IEEE80211_TKIP_P2_KEY, cmd->cmd.tx.key); - IWL_DEBUG_TX("tx_cmd with tkip hwcrypto\n"); - break; - - case ALG_WEP: - wepkey = &priv->wep_keys[ctl->hw_key->hw_key_idx]; - cmd->cmd.tx.sec_ctl = 0; - if (priv->default_wep_key) { - /* the WEP key was sent as static */ - keyidx = ctl->hw_key->hw_key_idx; - memcpy(&cmd->cmd.tx.key[3], wepkey->key, - wepkey->key_size); - if (wepkey->key_size == WEP_KEY_LEN_128) - cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128; - } else { - /* the WEP key was sent as dynamic */ - keyidx = keyinfo->keyidx; - memcpy(&cmd->cmd.tx.key[3], keyinfo->key, - keyinfo->keylen); - if (keyinfo->keylen == WEP_KEY_LEN_128) - cmd->cmd.tx.sec_ctl |= TX_CMD_SEC_KEY128; - } - - cmd->cmd.tx.sec_ctl |= (TX_CMD_SEC_WEP | - (keyidx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT); - - IWL_DEBUG_TX("Configuring packet for WEP encryption " - "with key %d\n", keyidx); - break; - - default: - printk(KERN_ERR "Unknown encode alg %d\n", keyinfo->alg); - break; - } -} - -/* - * handle build REPLY_TX command notification. - */ -static void iwl4965_build_tx_cmd_basic(struct iwl_priv *priv, - struct iwl_cmd *cmd, - struct ieee80211_tx_control *ctrl, - struct ieee80211_hdr *hdr, - int is_unicast, u8 std_id) -{ - u16 fc = le16_to_cpu(hdr->frame_control); - __le32 tx_flags = cmd->cmd.tx.tx_flags; - - cmd->cmd.tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; - if (!(ctrl->flags & IEEE80211_TXCTL_NO_ACK)) { - tx_flags |= TX_CMD_FLG_ACK_MSK; - if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) - tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK; - if (ieee80211_is_probe_response(fc) && - !(le16_to_cpu(hdr->seq_ctrl) & 0xf)) - tx_flags |= TX_CMD_FLG_TSF_MSK; - } else { - tx_flags &= (~TX_CMD_FLG_ACK_MSK); - 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; - - if (ieee80211_is_qos_data(fc)) { - u8 *qc = ieee80211_get_qos_ctrl(hdr, ieee80211_get_hdrlen(fc)); - cmd->cmd.tx.tid_tspec = qc[0] & 0xf; - tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK; - } else { - tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK; - } - - if (ctrl->flags & IEEE80211_TXCTL_USE_RTS_CTS) { - tx_flags |= TX_CMD_FLG_RTS_MSK; - tx_flags &= ~TX_CMD_FLG_CTS_MSK; - } else if (ctrl->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) { - tx_flags &= ~TX_CMD_FLG_RTS_MSK; - tx_flags |= TX_CMD_FLG_CTS_MSK; - } - - if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK)) - tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK; - - tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK); - if ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) { - if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_ASSOC_REQ || - (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_REASSOC_REQ) - cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(3); - else - cmd->cmd.tx.timeout.pm_frame_timeout = cpu_to_le16(2); - } else { - cmd->cmd.tx.timeout.pm_frame_timeout = 0; - } - - cmd->cmd.tx.driver_txop = 0; - cmd->cmd.tx.tx_flags = tx_flags; - cmd->cmd.tx.next_frame_len = 0; -} -static void iwl_update_tx_stats(struct iwl_priv *priv, u16 fc, u16 len) -{ - /* 0 - mgmt, 1 - cnt, 2 - data */ - int idx = (fc & IEEE80211_FCTL_FTYPE) >> 2; - priv->tx_stats[idx].cnt++; - priv->tx_stats[idx].bytes += len; -} -/* - * start REPLY_TX command process - */ -static int iwl4965_tx_skb(struct iwl_priv *priv, - struct sk_buff *skb, struct ieee80211_tx_control *ctl) -{ - struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; - struct iwl_tfd_frame *tfd; - u32 *control_flags; - int txq_id = ctl->queue; - struct iwl_tx_queue *txq = NULL; - struct iwl_queue *q = NULL; - dma_addr_t phys_addr; - dma_addr_t txcmd_phys; - dma_addr_t scratch_phys; - struct iwl_cmd *out_cmd = NULL; - u16 len, idx, len_org; - u8 hdr_len; - u8 id; - u8 unicast; - u8 sta_id; - u8 tid = 0; - u8 wait_write_ptr = 0; - u16 seq_number = 0; - u16 fc; - u8 *qc = NULL; - unsigned long flags; - int rc; - - spin_lock_irqsave(&priv->lock, flags); - if (iwl_is_rfkill(priv)) { - IWL_DEBUG_DROP("Dropping - RF KILL\n"); - goto drop_unlock; - } - - if (!priv->vif) { - IWL_DEBUG_DROP("Dropping - !priv->vif\n"); - goto drop_unlock; - } - - if ((ctl->tx_rate->hw_value & 0xFF) == IWL_INVALID_RATE) { - IWL_ERROR("ERROR: No TX rate available.\n"); - goto drop_unlock; - } - - unicast = !is_multicast_ether_addr(hdr->addr1); - id = 0; - - fc = le16_to_cpu(hdr->frame_control); - -#ifdef CONFIG_IWLWIFI_DEBUG - if (ieee80211_is_auth(fc)) - IWL_DEBUG_TX("Sending AUTH frame\n"); - else if (ieee80211_is_assoc_request(fc)) - IWL_DEBUG_TX("Sending ASSOC frame\n"); - else if (ieee80211_is_reassoc_request(fc)) - IWL_DEBUG_TX("Sending REASSOC frame\n"); -#endif - - /* drop all data frame if we are not associated */ - if (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) && - (!iwl_is_associated(priv) || - ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && !priv->assoc_id) || - !priv->assoc_station_added)) { - IWL_DEBUG_DROP("Dropping - !iwl_is_associated\n"); - goto drop_unlock; - } - - spin_unlock_irqrestore(&priv->lock, flags); - - hdr_len = ieee80211_get_hdrlen(fc); - - /* Find (or create) index into station table for destination station */ - sta_id = iwl_get_sta_id(priv, hdr); - if (sta_id == IWL_INVALID_STATION) { - DECLARE_MAC_BUF(mac); - - IWL_DEBUG_DROP("Dropping - INVALID STATION: %s\n", - print_mac(mac, hdr->addr1)); - goto drop; - } - - IWL_DEBUG_TX("station Id %d\n", sta_id); - - if (ieee80211_is_qos_data(fc)) { - qc = ieee80211_get_qos_ctrl(hdr, hdr_len); - tid = qc[0] & 0xf; - seq_number = priv->stations[sta_id].tid[tid].seq_number & - IEEE80211_SCTL_SEQ; - hdr->seq_ctrl = cpu_to_le16(seq_number) | - (hdr->seq_ctrl & - __constant_cpu_to_le16(IEEE80211_SCTL_FRAG)); - seq_number += 0x10; -#ifdef CONFIG_IWL4965_HT - /* aggregation is on for this <sta,tid> */ - if (ctl->flags & IEEE80211_TXCTL_AMPDU) - txq_id = priv->stations[sta_id].tid[tid].agg.txq_id; - priv->stations[sta_id].tid[tid].tfds_in_queue++; -#endif /* CONFIG_IWL4965_HT */ - } - - /* Descriptor for chosen Tx queue */ - txq = &priv->txq[txq_id]; - q = &txq->q; - - spin_lock_irqsave(&priv->lock, flags); - - /* Set up first empty TFD within this queue's circular TFD buffer */ - tfd = &txq->bd[q->write_ptr]; - memset(tfd, 0, sizeof(*tfd)); - control_flags = (u32 *) tfd; - idx = get_cmd_index(q, q->write_ptr, 0); - - /* Set up driver data for this TFD */ - memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info)); - txq->txb[q->write_ptr].skb[0] = skb; - memcpy(&(txq->txb[q->write_ptr].status.control), - ctl, sizeof(struct ieee80211_tx_control)); - - /* Set up first empty entry in queue's array of Tx/cmd buffers */ - out_cmd = &txq->cmd[idx]; - memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr)); - memset(&out_cmd->cmd.tx, 0, sizeof(out_cmd->cmd.tx)); - - /* - * Set up the Tx-command (not MAC!) header. - * Store the chosen Tx queue and TFD index within the sequence field; - * after Tx, uCode's Tx response will return this value so driver can - * locate the frame within the tx queue and do post-tx processing. - */ - out_cmd->hdr.cmd = REPLY_TX; - out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) | - INDEX_TO_SEQ(q->write_ptr))); - - /* Copy MAC header from skb into command buffer */ - memcpy(out_cmd->cmd.tx.hdr, hdr, hdr_len); - - /* - * Use the first empty entry in this queue's command buffer array - * to contain the Tx command and MAC header concatenated together - * (payload data will be in another buffer). - * Size of this varies, due to varying MAC header length. - * If end is not dword aligned, we'll have 2 extra bytes at the end - * of the MAC header (device reads on dword boundaries). - * We'll tell device about this padding later. - */ - len = sizeof(struct iwl_tx_cmd) + - sizeof(struct iwl_cmd_header) + hdr_len; - - len_org = len; - len = (len + 3) & ~3; - - if (len_org != len) - len_org = 1; - else - len_org = 0; - - /* Physical address of this Tx command's header (not MAC header!), - * within command buffer array. */ - txcmd_phys = txq->dma_addr_cmd + sizeof(struct iwl_cmd) * idx + - offsetof(struct iwl_cmd, hdr); - - /* Add buffer containing Tx command and MAC(!) header to TFD's - * first entry */ - iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, txcmd_phys, len); - - if (!(ctl->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT)) - iwl4965_build_tx_cmd_hwcrypto(priv, ctl, out_cmd, skb, sta_id); - - /* Set up TFD's 2nd entry to point directly to remainder of skb, - * if any (802.11 null frames have no payload). */ - len = skb->len - hdr_len; - if (len) { - phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len, - len, PCI_DMA_TODEVICE); - iwl4965_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, len); - } - - /* Tell 4965 about any 2-byte padding after MAC header */ - if (len_org) - out_cmd->cmd.tx.tx_flags |= TX_CMD_FLG_MH_PAD_MSK; - - /* Total # bytes to be transmitted */ - len = (u16)skb->len; - out_cmd->cmd.tx.len = cpu_to_le16(len); - - /* TODO need this for burst mode later on */ - iwl4965_build_tx_cmd_basic(priv, out_cmd, ctl, hdr, unicast, sta_id); - - /* 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); - - iwl_update_tx_stats(priv, fc, len); - - scratch_phys = txcmd_phys + sizeof(struct iwl_cmd_header) + - offsetof(struct iwl_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); - - if (!ieee80211_get_morefrag(hdr)) { - txq->need_update = 1; - if (qc) - priv->stations[sta_id].tid[tid].seq_number = seq_number; - } else { - wait_write_ptr = 1; - txq->need_update = 0; - } - - iwl_print_hex_dump(priv, IWL_DL_TX, out_cmd->cmd.payload, - sizeof(out_cmd->cmd.tx)); - - iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)out_cmd->cmd.tx.hdr, - ieee80211_get_hdrlen(fc)); - - /* Set up entry for this TFD in Tx byte-count array */ - priv->cfg->ops->lib->txq_update_byte_cnt_tbl(priv, txq, len); - - /* Tell device the write index *just past* this latest filled TFD */ - q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd); - rc = iwl_txq_update_write_ptr(priv, txq); - spin_unlock_irqrestore(&priv->lock, flags); - - if (rc) - return rc; - - if ((iwl_queue_space(q) < q->high_mark) - && priv->mac80211_registered) { - if (wait_write_ptr) { - spin_lock_irqsave(&priv->lock, flags); - txq->need_update = 1; - iwl_txq_update_write_ptr(priv, txq); - spin_unlock_irqrestore(&priv->lock, flags); - } - - ieee80211_stop_queue(priv->hw, ctl->queue); - } - - return 0; - -drop_unlock: - spin_unlock_irqrestore(&priv->lock, flags); -drop: - return -1; -} - static void iwl4965_set_rate(struct iwl_priv *priv) { const struct ieee80211_supported_band *hw = NULL; @@ -3101,52 +2568,6 @@ int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm) return sig_qual; } -/** - * iwl_txq_update_write_ptr - Send new write index to hardware - */ -static int iwl_txq_update_write_ptr(struct iwl_priv *priv, - struct iwl_tx_queue *txq) -{ - u32 reg = 0; - int ret = 0; - int txq_id = txq->q.id; - - if (txq->need_update == 0) - return ret; - - /* if we're trying to save power */ - if (test_bit(STATUS_POWER_PMI, &priv->status)) { - /* wake up nic if it's powered down ... - * uCode will wake up, and interrupt us again, so next - * time we'll skip this part. */ - reg = iwl_read32(priv, CSR_UCODE_DRV_GP1); - - if (reg & CSR_UCODE_DRV_GP1_BIT_MAC_SLEEP) { - IWL_DEBUG_INFO("Requesting wakeup, GP1 = 0x%x\n", reg); - iwl_set_bit(priv, CSR_GP_CNTRL, - CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); - return ret; - } - - /* restore this queue's parameters in nic hardware. */ - ret = iwl_grab_nic_access(priv); - if (ret) - return ret; - iwl_write_direct32(priv, HBUS_TARG_WRPTR, - txq->q.write_ptr | (txq_id << 8)); - iwl_release_nic_access(priv); - - /* else not in power-save mode, uCode will never sleep when we're - * trying to tx (during RFKILL, we're not trying to tx). */ - } else - iwl_write32(priv, HBUS_TARG_WRPTR, - txq->q.write_ptr | (txq_id << 8)); - - txq->need_update = 0; - - return ret; -} - #ifdef CONFIG_IWLWIFI_DEBUG static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv) { @@ -4956,7 +4377,7 @@ static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb, IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len, ctl->tx_rate->bitrate); - if (iwl4965_tx_skb(priv, skb, ctl)) + if (iwl_tx_skb(priv, skb, ctl)) dev_kfree_skb_any(skb); IWL_DEBUG_MAC80211("leave\n"); |