1 files changed, 64 insertions, 7 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-5000.c b/drivers/net/wireless/iwlwifi/iwl-5000.c
index 878d6193b232..f3d139b663e6 100644
--- a/drivers/net/wireless/iwlwifi/iwl-5000.c
+++ b/drivers/net/wireless/iwlwifi/iwl-5000.c
@@ -93,6 +93,13 @@ static int iwl5000_apm_init(struct iwl_priv *priv)
         iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
                     CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX);
 
+        /* Set FH wait treshold to maximum (HW error during stress W/A) */
+        iwl_set_bit(priv, CSR_DBG_HPET_MEM_REG, CSR_DBG_HPET_MEM_REG_VAL);
+
+        /* enable HAP INTA to move device L1a -> L0s */
+        iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
+                    CSR_HW_IF_CONFIG_REG_BIT_HAP_WAKE_L1A);
+
         iwl_set_bit(priv, CSR_ANA_PLL_CFG, CSR50_ANA_PLL_CFG_VAL);
 
         /* set "initialization complete" bit to move adapter
@@ -230,6 +237,16 @@ static void iwl5000_nic_config(struct iwl_priv *priv)
                     CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
                     CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);
 
+        /* W/A : NIC is stuck in a reset state after Early PCIe power off
+         * (PCIe power is lost before PERST# is asserted),
+         * causing ME FW to lose ownership and not being able to obtain it back.
+         */
+        iwl_grab_nic_access(priv);
+        iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
+                                APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
+                                ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
+        iwl_release_nic_access(priv);
+
         spin_unlock_irqrestore(&priv->lock, flags);
 }
 
@@ -924,8 +941,8 @@ static void iwl5000_txq_update_byte_cnt_tbl(struct iwl_priv *priv,
         len = byte_cnt + IWL_TX_CRC_SIZE + IWL_TX_DELIMITER_SIZE;
 
         if (txq_id != IWL_CMD_QUEUE_NUM) {
-                sta = txq->cmd[txq->q.write_ptr].cmd.tx.sta_id;
-                sec_ctl = txq->cmd[txq->q.write_ptr].cmd.tx.sec_ctl;
+                sta = txq->cmd[txq->q.write_ptr]->cmd.tx.sta_id;
+                sec_ctl = txq->cmd[txq->q.write_ptr]->cmd.tx.sec_ctl;
 
                 switch (sec_ctl & TX_CMD_SEC_MSK) {
                 case TX_CMD_SEC_CCM:
@@ -964,7 +981,7 @@ static void iwl5000_txq_inval_byte_cnt_tbl(struct iwl_priv *priv,
         u8 sta = 0;
 
         if (txq_id != IWL_CMD_QUEUE_NUM)
-                sta = txq->cmd[txq->q.read_ptr].cmd.tx.sta_id;
+                sta = txq->cmd[txq->q.read_ptr]->cmd.tx.sta_id;
 
         shared_data->queues_byte_cnt_tbls[txq_id].tfd_offset[txq->q.read_ptr].
                                         val = cpu_to_le16(1 | (sta << 12));
@@ -1131,7 +1148,7 @@ static void iwl5000_txq_set_sched(struct iwl_priv *priv, u32 mask)
 
 static inline u32 iwl5000_get_scd_ssn(struct iwl5000_tx_resp *tx_resp)
 {
-        return le32_to_cpup((__le32*)&tx_resp->status +
+        return le32_to_cpup((__le32 *)&tx_resp->status +
                             tx_resp->frame_count) & MAX_SN;
 }
 
@@ -1228,9 +1245,9 @@ static int iwl5000_tx_status_reply_tx(struct iwl_priv *priv,
                                 bitmap = bitmap << sh;
                                 sh = 0;
                         }
-                        bitmap |= (1 << sh);
-                        IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
-                                           start, (u32)(bitmap & 0xFFFFFFFF));
+                        bitmap |= 1ULL << sh;
+                        IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%llx\n",
+                                           start, (unsigned long long)bitmap);
                 }
 
                 agg->bitmap = bitmap;
@@ -1444,6 +1461,44 @@ static void iwl5000_temperature(struct iwl_priv *priv)
         priv->temperature = le32_to_cpu(priv->statistics.general.temperature);
 }
 
+/* Calc max signal level (dBm) among 3 possible receivers */
+static int iwl5000_calc_rssi(struct iwl_priv *priv,
+                             struct iwl_rx_phy_res *rx_resp)
+{
+        /* data from PHY/DSP regarding signal strength, etc.,
+         *   contents are always there, not configurable by host
+         */
+        struct iwl5000_non_cfg_phy *ncphy =
+                (struct iwl5000_non_cfg_phy *)rx_resp->non_cfg_phy_buf;
+        u32 val, rssi_a, rssi_b, rssi_c, max_rssi;
+        u8 agc;
+
+        val  = le32_to_cpu(ncphy->non_cfg_phy[IWL50_RX_RES_AGC_IDX]);
+        agc = (val & IWL50_OFDM_AGC_MSK) >> IWL50_OFDM_AGC_BIT_POS;
+
+        /* Find max rssi among 3 possible receivers.
+         * These values are measured by the digital signal processor (DSP).
+         * They should stay fairly constant even as the signal strength varies,
+         *   if the radio's automatic gain control (AGC) is working right.
+         * AGC value (see below) will provide the "interesting" info.
+         */
+        val = le32_to_cpu(ncphy->non_cfg_phy[IWL50_RX_RES_RSSI_AB_IDX]);
+        rssi_a = (val & IWL50_OFDM_RSSI_A_MSK) >> IWL50_OFDM_RSSI_A_BIT_POS;
+        rssi_b = (val & IWL50_OFDM_RSSI_B_MSK) >> IWL50_OFDM_RSSI_B_BIT_POS;
+        val = le32_to_cpu(ncphy->non_cfg_phy[IWL50_RX_RES_RSSI_C_IDX]);
+        rssi_c = (val & IWL50_OFDM_RSSI_C_MSK) >> IWL50_OFDM_RSSI_C_BIT_POS;
+
+        max_rssi = max_t(u32, rssi_a, rssi_b);
+        max_rssi = max_t(u32, max_rssi, rssi_c);
+
+        IWL_DEBUG_STATS("Rssi In A %d B %d C %d Max %d AGC dB %d\n",
+                rssi_a, rssi_b, rssi_c, max_rssi, agc);
+
+        /* dBm = max_rssi dB - agc dB - constant.
+         * Higher AGC (higher radio gain) means lower signal. */
+        return max_rssi - agc - IWL_RSSI_OFFSET;
+}
+
 static struct iwl_hcmd_ops iwl5000_hcmd = {
         .rxon_assoc = iwl5000_send_rxon_assoc,
 };
@@ -1454,6 +1509,7 @@ static struct iwl_hcmd_utils_ops iwl5000_hcmd_utils = {
         .gain_computation = iwl5000_gain_computation,
         .chain_noise_reset = iwl5000_chain_noise_reset,
         .rts_tx_cmd_flag = iwl5000_rts_tx_cmd_flag,
+        .calc_rssi = iwl5000_calc_rssi,
 };
 
 static struct iwl_lib_ops iwl5000_lib = {
@@ -1474,6 +1530,7 @@ static struct iwl_lib_ops iwl5000_lib = {
         .alive_notify = iwl5000_alive_notify,
         .send_tx_power = iwl5000_send_tx_power,
         .temperature = iwl5000_temperature,
+        .update_chain_flags = iwl4965_update_chain_flags,
         .apm_ops = {
                 .init = iwl5000_apm_init,
                 .reset = iwl5000_apm_reset,