[IWLWIFI]: add iwlwifi wireless drivers
This patch adds the mac80211 based wireless drivers for the Intel
PRO/Wireless 3945ABG/BG Network Connection and Intel Wireless WiFi
Link AGN (4965) adapters.
[ Move driver into it's own directory -DaveM ]
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/wireless/iwlwifi/iwl-4965.c b/drivers/net/wireless/iwlwifi/iwl-4965.c
new file mode 100644
index 0000000..ba35b3a
--- /dev/null
+++ b/drivers/net/wireless/iwlwifi/iwl-4965.c
@@ -0,0 +1,4719 @@
+/******************************************************************************
+ *
+ * Copyright(c) 2003 - 2007 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
+ *
+ * The full GNU General Public License is included in this distribution in the
+ * file called LICENSE.
+ *
+ * Contact Information:
+ * James P. Ketrenos <ipw2100-admin@linux.intel.com>
+ * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+ *
+ *****************************************************************************/
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/version.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/dma-mapping.h>
+#include <linux/delay.h>
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <linux/wireless.h>
+#include <net/mac80211.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/delay.h>
+
+#include "iwlwifi.h"
+#include "iwl-4965.h"
+#include "iwl-helpers.h"
+
+#define IWL_DECLARE_RATE_INFO(r, s, ip, in, rp, rn, pp, np) \
+ [IWL_RATE_##r##M_INDEX] = { IWL_RATE_##r##M_PLCP, \
+ IWL_RATE_SISO_##s##M_PLCP, \
+ IWL_RATE_MIMO_##s##M_PLCP, \
+ IWL_RATE_##r##M_IEEE, \
+ IWL_RATE_##ip##M_INDEX, \
+ IWL_RATE_##in##M_INDEX, \
+ IWL_RATE_##rp##M_INDEX, \
+ IWL_RATE_##rn##M_INDEX, \
+ IWL_RATE_##pp##M_INDEX, \
+ IWL_RATE_##np##M_INDEX }
+
+/*
+ * Parameter order:
+ * rate, ht rate, prev rate, next rate, prev tgg rate, next tgg rate
+ *
+ * If there isn't a valid next or previous rate then INV is used which
+ * maps to IWL_RATE_INVALID
+ *
+ */
+const struct iwl_rate_info iwl_rates[IWL_RATE_COUNT] = {
+ IWL_DECLARE_RATE_INFO(1, INV, INV, 2, INV, 2, INV, 2), /* 1mbps */
+ IWL_DECLARE_RATE_INFO(2, INV, 1, 5, 1, 5, 1, 5), /* 2mbps */
+ IWL_DECLARE_RATE_INFO(5, INV, 2, 6, 2, 11, 2, 11), /*5.5mbps */
+ IWL_DECLARE_RATE_INFO(11, INV, 9, 12, 9, 12, 5, 18), /* 11mbps */
+ IWL_DECLARE_RATE_INFO(6, 6, 5, 9, 5, 11, 5, 11), /* 6mbps */
+ IWL_DECLARE_RATE_INFO(9, 6, 6, 11, 6, 11, 5, 11), /* 9mbps */
+ IWL_DECLARE_RATE_INFO(12, 12, 11, 18, 11, 18, 11, 18), /* 12mbps */
+ IWL_DECLARE_RATE_INFO(18, 18, 12, 24, 12, 24, 11, 24), /* 18mbps */
+ IWL_DECLARE_RATE_INFO(24, 24, 18, 36, 18, 36, 18, 36), /* 24mbps */
+ IWL_DECLARE_RATE_INFO(36, 36, 24, 48, 24, 48, 24, 48), /* 36mbps */
+ IWL_DECLARE_RATE_INFO(48, 48, 36, 54, 36, 54, 36, 54), /* 48mbps */
+ IWL_DECLARE_RATE_INFO(54, 54, 48, INV, 48, INV, 48, INV),/* 54mbps */
+ IWL_DECLARE_RATE_INFO(60, 60, 48, INV, 48, INV, 48, INV),/* 60mbps */
+};
+
+static int is_fat_channel(__le32 rxon_flags)
+{
+ return (rxon_flags & RXON_FLG_CHANNEL_MODE_PURE_40_MSK) ||
+ (rxon_flags & RXON_FLG_CHANNEL_MODE_MIXED_MSK);
+}
+
+static u8 is_single_stream(struct iwl_priv *priv)
+{
+#ifdef CONFIG_IWLWIFI_HT
+ if (!priv->is_ht_enabled || !priv->current_assoc_ht.is_ht ||
+ (priv->active_rate_ht[1] == 0) ||
+ (priv->ps_mode == IWL_MIMO_PS_STATIC))
+ return 1;
+#else
+ return 1;
+#endif /*CONFIG_IWLWIFI_HT */
+ return 0;
+}
+
+/*
+ * Determine how many receiver/antenna chains to use.
+ * More provides better reception via diversity. Fewer saves power.
+ * MIMO (dual stream) requires at least 2, but works better with 3.
+ * This does not determine *which* chains to use, just how many.
+ */
+static int iwl4965_get_rx_chain_counter(struct iwl_priv *priv,
+ u8 *idle_state, u8 *rx_state)
+{
+ u8 is_single = is_single_stream(priv);
+ u8 is_cam = test_bit(STATUS_POWER_PMI, &priv->status) ? 0 : 1;
+
+ /* # of Rx chains to use when expecting MIMO. */
+ if (is_single || (!is_cam && (priv->ps_mode == IWL_MIMO_PS_STATIC)))
+ *rx_state = 2;
+ else
+ *rx_state = 3;
+
+ /* # Rx chains when idling and maybe trying to save power */
+ switch (priv->ps_mode) {
+ case IWL_MIMO_PS_STATIC:
+ case IWL_MIMO_PS_DYNAMIC:
+ *idle_state = (is_cam) ? 2 : 1;
+ break;
+ case IWL_MIMO_PS_NONE:
+ *idle_state = (is_cam) ? *rx_state : 1;
+ break;
+ default:
+ *idle_state = 1;
+ break;
+ }
+
+ return 0;
+}
+
+int iwl_hw_rxq_stop(struct iwl_priv *priv)
+{
+ int rc;
+ unsigned long flags;
+
+ spin_lock_irqsave(&priv->lock, flags);
+ rc = iwl_grab_restricted_access(priv);
+ if (rc) {
+ spin_unlock_irqrestore(&priv->lock, flags);
+ return rc;
+ }
+
+ /* stop HW */
+ iwl_write_restricted(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG, 0);
+ rc = iwl_poll_restricted_bit(priv, FH_MEM_RSSR_RX_STATUS_REG,
+ (1 << 24), 1000);
+ if (rc < 0)
+ IWL_ERROR("Can't stop Rx DMA.\n");
+
+ iwl_release_restricted_access(priv);
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ return 0;
+}
+
+u8 iwl_hw_find_station(struct iwl_priv *priv, const u8 *addr)
+{
+ int i;
+ int start = 0;
+ int ret = IWL_INVALID_STATION;
+ unsigned long flags;
+
+ if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) ||
+ (priv->iw_mode == IEEE80211_IF_TYPE_AP))
+ start = IWL_STA_ID;
+
+ if (is_broadcast_ether_addr(addr))
+ return IWL4965_BROADCAST_ID;
+
+ spin_lock_irqsave(&priv->sta_lock, flags);
+ for (i = start; i < priv->hw_setting.max_stations; i++)
+ if ((priv->stations[i].used) &&
+ (!compare_ether_addr
+ (priv->stations[i].sta.sta.addr, addr))) {
+ ret = i;
+ goto out;
+ }
+
+ IWL_DEBUG_ASSOC("can not find STA " MAC_FMT " total %d\n",
+ MAC_ARG(addr), priv->num_stations);
+
+ out:
+ spin_unlock_irqrestore(&priv->sta_lock, flags);
+ return ret;
+}
+
+static int iwl4965_nic_set_pwr_src(struct iwl_priv *priv, int pwr_max)
+{
+ int rc = 0;
+ unsigned long flags;
+
+ spin_lock_irqsave(&priv->lock, flags);
+ rc = iwl_grab_restricted_access(priv);
+ if (rc) {
+ spin_unlock_irqrestore(&priv->lock, flags);
+ return rc;
+ }
+
+ if (!pwr_max) {
+ u32 val;
+
+ rc = pci_read_config_dword(priv->pci_dev, PCI_POWER_SOURCE,
+ &val);
+
+ if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT)
+ iwl_set_bits_mask_restricted_reg(
+ priv, APMG_PS_CTRL_REG,
+ APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
+ ~APMG_PS_CTRL_MSK_PWR_SRC);
+ } else
+ iwl_set_bits_mask_restricted_reg(
+ priv, APMG_PS_CTRL_REG,
+ APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
+ ~APMG_PS_CTRL_MSK_PWR_SRC);
+
+ iwl_release_restricted_access(priv);
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ return rc;
+}
+
+static int iwl4965_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
+{
+ int rc;
+ unsigned long flags;
+
+ spin_lock_irqsave(&priv->lock, flags);
+ rc = iwl_grab_restricted_access(priv);
+ if (rc) {
+ spin_unlock_irqrestore(&priv->lock, flags);
+ return rc;
+ }
+
+ /* stop HW */
+ iwl_write_restricted(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG, 0);
+
+ iwl_write_restricted(priv, FH_RSCSR_CHNL0_RBDCB_WPTR_REG, 0);
+ iwl_write_restricted(priv, FH_RSCSR_CHNL0_RBDCB_BASE_REG,
+ rxq->dma_addr >> 8);
+
+ iwl_write_restricted(priv, FH_RSCSR_CHNL0_STTS_WPTR_REG,
+ (priv->hw_setting.shared_phys +
+ offsetof(struct iwl_shared, val0)) >> 4);
+
+ iwl_write_restricted(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG,
+ FH_RCSR_RX_CONFIG_CHNL_EN_ENABLE_VAL |
+ FH_RCSR_CHNL0_RX_CONFIG_IRQ_DEST_INT_HOST_VAL |
+ IWL_FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_4K |
+ /*0x10 << 4 | */
+ (RX_QUEUE_SIZE_LOG <<
+ FH_RCSR_RX_CONFIG_RBDCB_SIZE_BITSHIFT));
+
+ /*
+ * iwl_write32(priv,CSR_INT_COAL_REG,0);
+ */
+
+ iwl_release_restricted_access(priv);
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ return 0;
+}
+
+static int iwl4965_kw_init(struct iwl_priv *priv)
+{
+ unsigned long flags;
+ int rc;
+
+ spin_lock_irqsave(&priv->lock, flags);
+ rc = iwl_grab_restricted_access(priv);
+ if (rc)
+ goto out;
+
+ iwl_write_restricted(priv, IWL_FH_KW_MEM_ADDR_REG,
+ priv->kw.dma_addr >> 4);
+ iwl_release_restricted_access(priv);
+out:
+ spin_unlock_irqrestore(&priv->lock, flags);
+ return rc;
+}
+
+static int iwl4965_kw_alloc(struct iwl_priv *priv)
+{
+ struct pci_dev *dev = priv->pci_dev;
+ struct iwl_kw *kw = &priv->kw;
+
+ kw->size = IWL4965_KW_SIZE; /* TBW need set somewhere else */
+ kw->v_addr = pci_alloc_consistent(dev, kw->size, &kw->dma_addr);
+ if (!kw->v_addr)
+ return -ENOMEM;
+
+ return 0;
+}
+
+#define CHECK_AND_PRINT(x) ((eeprom_ch->flags & EEPROM_CHANNEL_##x) \
+ ? # x " " : "")
+
+int iwl4965_set_fat_chan_info(struct iwl_priv *priv, int phymode, u16 channel,
+ const struct iwl_eeprom_channel *eeprom_ch,
+ u8 fat_extension_channel)
+{
+ struct iwl_channel_info *ch_info;
+
+ ch_info = (struct iwl_channel_info *)
+ iwl_get_channel_info(priv, phymode, channel);
+
+ if (!is_channel_valid(ch_info))
+ return -1;
+
+ IWL_DEBUG_INFO("FAT Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x"
+ " %ddBm): Ad-Hoc %ssupported\n",
+ ch_info->channel,
+ is_channel_a_band(ch_info) ?
+ "5.2" : "2.4",
+ CHECK_AND_PRINT(IBSS),
+ CHECK_AND_PRINT(ACTIVE),
+ CHECK_AND_PRINT(RADAR),
+ CHECK_AND_PRINT(WIDE),
+ CHECK_AND_PRINT(NARROW),
+ CHECK_AND_PRINT(DFS),
+ eeprom_ch->flags,
+ eeprom_ch->max_power_avg,
+ ((eeprom_ch->flags & EEPROM_CHANNEL_IBSS)
+ && !(eeprom_ch->flags & EEPROM_CHANNEL_RADAR)) ?
+ "" : "not ");
+
+ ch_info->fat_eeprom = *eeprom_ch;
+ ch_info->fat_max_power_avg = eeprom_ch->max_power_avg;
+ ch_info->fat_curr_txpow = eeprom_ch->max_power_avg;
+ ch_info->fat_min_power = 0;
+ ch_info->fat_scan_power = eeprom_ch->max_power_avg;
+ ch_info->fat_flags = eeprom_ch->flags;
+ ch_info->fat_extension_channel = fat_extension_channel;
+
+ return 0;
+}
+
+static void iwl4965_kw_free(struct iwl_priv *priv)
+{
+ struct pci_dev *dev = priv->pci_dev;
+ struct iwl_kw *kw = &priv->kw;
+
+ if (kw->v_addr) {
+ pci_free_consistent(dev, kw->size, kw->v_addr, kw->dma_addr);
+ memset(kw, 0, sizeof(*kw));
+ }
+}
+
+/**
+ * iwl4965_txq_ctx_reset - Reset TX queue context
+ * Destroys all DMA structures and initialise them again
+ *
+ * @param priv
+ * @return error code
+ */
+static int iwl4965_txq_ctx_reset(struct iwl_priv *priv)
+{
+ int rc = 0;
+ int txq_id, slots_num;
+ unsigned long flags;
+
+ iwl4965_kw_free(priv);
+
+ iwl_hw_txq_ctx_free(priv);
+
+ /* Tx CMD queue */
+ rc = iwl4965_kw_alloc(priv);
+ if (rc) {
+ IWL_ERROR("Keep Warm allocation failed");
+ goto error_kw;
+ }
+
+ spin_lock_irqsave(&priv->lock, flags);
+
+ rc = iwl_grab_restricted_access(priv);
+ if (unlikely(rc)) {
+ IWL_ERROR("TX reset failed");
+ spin_unlock_irqrestore(&priv->lock, flags);
+ goto error_reset;
+ }
+
+ iwl_write_restricted_reg(priv, SCD_TXFACT, 0);
+ iwl_release_restricted_access(priv);
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ rc = iwl4965_kw_init(priv);
+ if (rc) {
+ IWL_ERROR("kw_init failed\n");
+ goto error_reset;
+ }
+
+ /* Tx queue(s) */
+ for (txq_id = 0; txq_id < priv->hw_setting.max_txq_num; txq_id++) {
+ slots_num = (txq_id == IWL_CMD_QUEUE_NUM) ?
+ TFD_CMD_SLOTS : TFD_TX_CMD_SLOTS;
+ rc = iwl_tx_queue_init(priv, &priv->txq[txq_id], slots_num,
+ txq_id);
+ if (rc) {
+ IWL_ERROR("Tx %d queue init failed\n", txq_id);
+ goto error;
+ }
+ }
+
+ return rc;
+
+ error:
+ iwl_hw_txq_ctx_free(priv);
+ error_reset:
+ iwl4965_kw_free(priv);
+ error_kw:
+ return rc;
+}
+
+int iwl_hw_nic_init(struct iwl_priv *priv)
+{
+ int rc;
+ unsigned long flags;
+ struct iwl_rx_queue *rxq = &priv->rxq;
+ u8 rev_id;
+ u32 val;
+ u8 val_link;
+
+ iwl_power_init_handle(priv);
+
+ /* nic_init */
+ spin_lock_irqsave(&priv->lock, flags);
+
+ iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS,
+ CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
+
+ iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
+ rc = iwl_poll_bit(priv, CSR_GP_CNTRL,
+ CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
+ CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
+ if (rc < 0) {
+ spin_unlock_irqrestore(&priv->lock, flags);
+ IWL_DEBUG_INFO("Failed to init the card\n");
+ return rc;
+ }
+
+ rc = iwl_grab_restricted_access(priv);
+ if (rc) {
+ spin_unlock_irqrestore(&priv->lock, flags);
+ return rc;
+ }
+
+ iwl_read_restricted_reg(priv, APMG_CLK_CTRL_REG);
+
+ iwl_write_restricted_reg(priv, APMG_CLK_CTRL_REG,
+ APMG_CLK_VAL_DMA_CLK_RQT |
+ APMG_CLK_VAL_BSM_CLK_RQT);
+ iwl_read_restricted_reg(priv, APMG_CLK_CTRL_REG);
+
+ udelay(20);
+
+ iwl_set_bits_restricted_reg(priv, APMG_PCIDEV_STT_REG,
+ APMG_PCIDEV_STT_VAL_L1_ACT_DIS);
+
+ iwl_release_restricted_access(priv);
+ iwl_write32(priv, CSR_INT_COALESCING, 512 / 32);
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ /* Determine HW type */
+ rc = pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &rev_id);
+ if (rc)
+ return rc;
+
+ IWL_DEBUG_INFO("HW Revision ID = 0x%X\n", rev_id);
+
+ iwl4965_nic_set_pwr_src(priv, 1);
+ spin_lock_irqsave(&priv->lock, flags);
+
+ if ((rev_id & 0x80) == 0x80 && (rev_id & 0x7f) < 8) {
+ pci_read_config_dword(priv->pci_dev, PCI_REG_WUM8, &val);
+ /* Enable No Snoop field */
+ pci_write_config_dword(priv->pci_dev, PCI_REG_WUM8,
+ val & ~(1 << 11));
+ }
+
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ /* Read the EEPROM */
+ rc = iwl_eeprom_init(priv);
+ if (rc)
+ return rc;
+
+ if (priv->eeprom.calib_version < EEPROM_TX_POWER_VERSION_NEW) {
+ IWL_ERROR("Older EEPROM detected! Aborting.\n");
+ return -EINVAL;
+ }
+
+ pci_read_config_byte(priv->pci_dev, PCI_LINK_CTRL, &val_link);
+
+ /* disable L1 entry -- workaround for pre-B1 */
+ pci_write_config_byte(priv->pci_dev, PCI_LINK_CTRL, val_link & ~0x02);
+
+ spin_lock_irqsave(&priv->lock, flags);
+
+ /* set CSR_HW_CONFIG_REG for uCode use */
+
+ iwl_set_bit(priv, CSR_SW_VER, CSR_HW_IF_CONFIG_REG_BIT_KEDRON_R |
+ CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
+ CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);
+
+ rc = iwl_grab_restricted_access(priv);
+ if (rc < 0) {
+ spin_unlock_irqrestore(&priv->lock, flags);
+ IWL_DEBUG_INFO("Failed to init the card\n");
+ return rc;
+ }
+
+ iwl_read_restricted_reg(priv, APMG_PS_CTRL_REG);
+ iwl_set_bits_restricted_reg(priv, APMG_PS_CTRL_REG,
+ APMG_PS_CTRL_VAL_RESET_REQ);
+ udelay(5);
+ iwl_clear_bits_restricted_reg(priv, APMG_PS_CTRL_REG,
+ APMG_PS_CTRL_VAL_RESET_REQ);
+
+ iwl_release_restricted_access(priv);
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ iwl_hw_card_show_info(priv);
+
+ /* end nic_init */
+
+ /* Allocate the RX queue, or reset if it is already allocated */
+ if (!rxq->bd) {
+ rc = iwl_rx_queue_alloc(priv);
+ if (rc) {
+ IWL_ERROR("Unable to initialize Rx queue\n");
+ return -ENOMEM;
+ }
+ } else
+ iwl_rx_queue_reset(priv, rxq);
+
+ iwl_rx_replenish(priv);
+
+ iwl4965_rx_init(priv, rxq);
+
+ spin_lock_irqsave(&priv->lock, flags);
+
+ rxq->need_update = 1;
+ iwl_rx_queue_update_write_ptr(priv, rxq);
+
+ spin_unlock_irqrestore(&priv->lock, flags);
+ rc = iwl4965_txq_ctx_reset(priv);
+ if (rc)
+ return rc;
+
+ if (priv->eeprom.sku_cap & EEPROM_SKU_CAP_SW_RF_KILL_ENABLE)
+ IWL_DEBUG_RF_KILL("SW RF KILL supported in EEPROM.\n");
+
+ if (priv->eeprom.sku_cap & EEPROM_SKU_CAP_HW_RF_KILL_ENABLE)
+ IWL_DEBUG_RF_KILL("HW RF KILL supported in EEPROM.\n");
+
+ set_bit(STATUS_INIT, &priv->status);
+
+ return 0;
+}
+
+int iwl_hw_nic_stop_master(struct iwl_priv *priv)
+{
+ int rc = 0;
+ u32 reg_val;
+ unsigned long flags;
+
+ spin_lock_irqsave(&priv->lock, flags);
+
+ /* set stop master bit */
+ iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER);
+
+ reg_val = iwl_read32(priv, CSR_GP_CNTRL);
+
+ if (CSR_GP_CNTRL_REG_FLAG_MAC_POWER_SAVE ==
+ (reg_val & CSR_GP_CNTRL_REG_MSK_POWER_SAVE_TYPE))
+ IWL_DEBUG_INFO("Card in power save, master is already "
+ "stopped\n");
+ else {
+ rc = iwl_poll_bit(priv, CSR_RESET,
+ CSR_RESET_REG_FLAG_MASTER_DISABLED,
+ CSR_RESET_REG_FLAG_MASTER_DISABLED, 100);
+ if (rc < 0) {
+ spin_unlock_irqrestore(&priv->lock, flags);
+ return rc;
+ }
+ }
+
+ spin_unlock_irqrestore(&priv->lock, flags);
+ IWL_DEBUG_INFO("stop master\n");
+
+ return rc;
+}
+
+void iwl_hw_txq_ctx_stop(struct iwl_priv *priv)
+{
+
+ int txq_id;
+ unsigned long flags;
+
+ /* reset TFD queues */
+ for (txq_id = 0; txq_id < priv->hw_setting.max_txq_num; txq_id++) {
+ spin_lock_irqsave(&priv->lock, flags);
+ if (iwl_grab_restricted_access(priv)) {
+ spin_unlock_irqrestore(&priv->lock, flags);
+ continue;
+ }
+
+ iwl_write_restricted(priv,
+ IWL_FH_TCSR_CHNL_TX_CONFIG_REG(txq_id),
+ 0x0);
+ iwl_poll_restricted_bit(priv, IWL_FH_TSSR_TX_STATUS_REG,
+ IWL_FH_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE
+ (txq_id), 200);
+ iwl_release_restricted_access(priv);
+ spin_unlock_irqrestore(&priv->lock, flags);
+ }
+
+ iwl_hw_txq_ctx_free(priv);
+}
+
+int iwl_hw_nic_reset(struct iwl_priv *priv)
+{
+ int rc = 0;
+ unsigned long flags;
+
+ iwl_hw_nic_stop_master(priv);
+
+ spin_lock_irqsave(&priv->lock, flags);
+
+ iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
+
+ udelay(10);
+
+ iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
+ rc = iwl_poll_bit(priv, CSR_RESET,
+ CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
+ CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25);
+
+ udelay(10);
+
+ rc = iwl_grab_restricted_access(priv);
+ if (!rc) {
+ iwl_write_restricted_reg(priv, APMG_CLK_EN_REG,
+ APMG_CLK_VAL_DMA_CLK_RQT |
+ APMG_CLK_VAL_BSM_CLK_RQT);
+
+ udelay(10);
+
+ iwl_set_bits_restricted_reg(priv, APMG_PCIDEV_STT_REG,
+ APMG_PCIDEV_STT_VAL_L1_ACT_DIS);
+
+ iwl_release_restricted_access(priv);
+ }
+
+ clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
+ wake_up_interruptible(&priv->wait_command_queue);
+
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ return rc;
+
+}
+
+#define REG_RECALIB_PERIOD (60)
+
+/**
+ * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
+ *
+ * This callback is provided in order to queue the statistics_work
+ * in work_queue context (v. softirq)
+ *
+ * This timer function is continually reset to execute within
+ * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
+ * was received. We need to ensure we receive the statistics in order
+ * to update the temperature used for calibrating the TXPOWER. However,
+ * we can't send the statistics command from softirq context (which
+ * is the context which timers run at) so we have to queue off the
+ * statistics_work to actually send the command to the hardware.
+ */
+static void iwl4965_bg_statistics_periodic(unsigned long data)
+{
+ struct iwl_priv *priv = (struct iwl_priv *)data;
+
+ queue_work(priv->workqueue, &priv->statistics_work);
+}
+
+/**
+ * iwl4965_bg_statistics_work - Send the statistics request to the hardware.
+ *
+ * This is queued by iwl_bg_statistics_periodic.
+ */
+static void iwl4965_bg_statistics_work(struct work_struct *work)
+{
+ struct iwl_priv *priv = container_of(work, struct iwl_priv,
+ statistics_work);
+
+ if (test_bit(STATUS_EXIT_PENDING, &priv->status))
+ return;
+
+ mutex_lock(&priv->mutex);
+ iwl_send_statistics_request(priv);
+ mutex_unlock(&priv->mutex);
+}
+
+#define CT_LIMIT_CONST 259
+#define TM_CT_KILL_THRESHOLD 110
+
+void iwl4965_rf_kill_ct_config(struct iwl_priv *priv)
+{
+ struct iwl_ct_kill_config cmd;
+ u32 R1, R2, R3;
+ u32 temp_th;
+ u32 crit_temperature;
+ unsigned long flags;
+ int rc = 0;
+
+ spin_lock_irqsave(&priv->lock, flags);
+ iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
+ CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ if (priv->statistics.flag & STATISTICS_REPLY_FLG_FAT_MODE_MSK) {
+ R1 = (s32)le32_to_cpu(priv->card_alive_init.therm_r1[1]);
+ R2 = (s32)le32_to_cpu(priv->card_alive_init.therm_r2[1]);
+ R3 = (s32)le32_to_cpu(priv->card_alive_init.therm_r3[1]);
+ } else {
+ R1 = (s32)le32_to_cpu(priv->card_alive_init.therm_r1[0]);
+ R2 = (s32)le32_to_cpu(priv->card_alive_init.therm_r2[0]);
+ R3 = (s32)le32_to_cpu(priv->card_alive_init.therm_r3[0]);
+ }
+
+ temp_th = CELSIUS_TO_KELVIN(TM_CT_KILL_THRESHOLD);
+
+ crit_temperature = ((temp_th * (R3-R1))/CT_LIMIT_CONST) + R2;
+ cmd.critical_temperature_R = cpu_to_le32(crit_temperature);
+ rc = iwl_send_cmd_pdu(priv,
+ REPLY_CT_KILL_CONFIG_CMD, sizeof(cmd), &cmd);
+ if (rc)
+ IWL_ERROR("REPLY_CT_KILL_CONFIG_CMD failed\n");
+ else
+ IWL_DEBUG_INFO("REPLY_CT_KILL_CONFIG_CMD succeeded\n");
+}
+
+#ifdef CONFIG_IWLWIFI_SENSITIVITY
+
+/* "false alarms" are signals that our DSP tries to lock onto,
+ * but then determines that they are either noise, or transmissions
+ * from a distant wireless network (also "noise", really) that get
+ * "stepped on" by stronger transmissions within our own network.
+ * This algorithm attempts to set a sensitivity level that is high
+ * enough to receive all of our own network traffic, but not so
+ * high that our DSP gets too busy trying to lock onto non-network
+ * activity/noise. */
+static int iwl4965_sens_energy_cck(struct iwl_priv *priv,
+ u32 norm_fa,
+ u32 rx_enable_time,
+ struct statistics_general_data *rx_info)
+{
+ u32 max_nrg_cck = 0;
+ int i = 0;
+ u8 max_silence_rssi = 0;
+ u32 silence_ref = 0;
+ u8 silence_rssi_a = 0;
+ u8 silence_rssi_b = 0;
+ u8 silence_rssi_c = 0;
+ u32 val;
+
+ /* "false_alarms" values below are cross-multiplications to assess the
+ * numbers of false alarms within the measured period of actual Rx
+ * (Rx is off when we're txing), vs the min/max expected false alarms
+ * (some should be expected if rx is sensitive enough) in a
+ * hypothetical listening period of 200 time units (TU), 204.8 msec:
+ *
+ * MIN_FA/fixed-time < false_alarms/actual-rx-time < MAX_FA/beacon-time
+ *
+ * */
+ u32 false_alarms = norm_fa * 200 * 1024;
+ u32 max_false_alarms = MAX_FA_CCK * rx_enable_time;
+ u32 min_false_alarms = MIN_FA_CCK * rx_enable_time;
+ struct iwl_sensitivity_data *data = NULL;
+
+ data = &(priv->sensitivity_data);
+
+ data->nrg_auto_corr_silence_diff = 0;
+
+ /* Find max silence rssi among all 3 receivers.
+ * This is background noise, which may include transmissions from other
+ * networks, measured during silence before our network's beacon */
+ silence_rssi_a = (u8)((rx_info->beacon_silence_rssi_a &
+ ALL_BAND_FILTER)>>8);
+ silence_rssi_b = (u8)((rx_info->beacon_silence_rssi_b &
+ ALL_BAND_FILTER)>>8);
+ silence_rssi_c = (u8)((rx_info->beacon_silence_rssi_c &
+ ALL_BAND_FILTER)>>8);
+
+ val = max(silence_rssi_b, silence_rssi_c);
+ max_silence_rssi = max(silence_rssi_a, (u8) val);
+
+ /* Store silence rssi in 20-beacon history table */
+ data->nrg_silence_rssi[data->nrg_silence_idx] = max_silence_rssi;
+ data->nrg_silence_idx++;
+ if (data->nrg_silence_idx >= NRG_NUM_PREV_STAT_L)
+ data->nrg_silence_idx = 0;
+
+ /* Find max silence rssi across 20 beacon history */
+ for (i = 0; i < NRG_NUM_PREV_STAT_L; i++) {
+ val = data->nrg_silence_rssi[i];
+ silence_ref = max(silence_ref, val);
+ }
+ IWL_DEBUG_CALIB("silence a %u, b %u, c %u, 20-bcn max %u\n",
+ silence_rssi_a, silence_rssi_b, silence_rssi_c,
+ silence_ref);
+
+ /* Find max rx energy (min value!) among all 3 receivers,
+ * measured during beacon frame.
+ * Save it in 10-beacon history table. */
+ i = data->nrg_energy_idx;
+ val = min(rx_info->beacon_energy_b, rx_info->beacon_energy_c);
+ data->nrg_value[i] = min(rx_info->beacon_energy_a, val);
+
+ data->nrg_energy_idx++;
+ if (data->nrg_energy_idx >= 10)
+ data->nrg_energy_idx = 0;
+
+ /* Find min rx energy (max value) across 10 beacon history.
+ * This is the minimum signal level that we want to receive well.
+ * Add backoff (margin so we don't miss slightly lower energy frames).
+ * This establishes an upper bound (min value) for energy threshold. */
+ max_nrg_cck = data->nrg_value[0];
+ for (i = 1; i < 10; i++)
+ max_nrg_cck = (u32) max(max_nrg_cck, (data->nrg_value[i]));
+ max_nrg_cck += 6;
+
+ IWL_DEBUG_CALIB("rx energy a %u, b %u, c %u, 10-bcn max/min %u\n",
+ rx_info->beacon_energy_a, rx_info->beacon_energy_b,
+ rx_info->beacon_energy_c, max_nrg_cck - 6);
+
+ /* Count number of consecutive beacons with fewer-than-desired
+ * false alarms. */
+ if (false_alarms < min_false_alarms)
+ data->num_in_cck_no_fa++;
+ else
+ data->num_in_cck_no_fa = 0;
+ IWL_DEBUG_CALIB("consecutive bcns with few false alarms = %u\n",
+ data->num_in_cck_no_fa);
+
+ /* If we got too many false alarms this time, reduce sensitivity */
+ if (false_alarms > max_false_alarms) {
+ IWL_DEBUG_CALIB("norm FA %u > max FA %u\n",
+ false_alarms, max_false_alarms);
+ IWL_DEBUG_CALIB("... reducing sensitivity\n");
+ data->nrg_curr_state = IWL_FA_TOO_MANY;
+
+ if (data->auto_corr_cck > AUTO_CORR_MAX_TH_CCK) {
+ /* Store for "fewer than desired" on later beacon */
+ data->nrg_silence_ref = silence_ref;
+
+ /* increase energy threshold (reduce nrg value)
+ * to decrease sensitivity */
+ if (data->nrg_th_cck > (NRG_MAX_CCK + NRG_STEP_CCK))
+ data->nrg_th_cck = data->nrg_th_cck
+ - NRG_STEP_CCK;
+ }
+
+ /* increase auto_corr values to decrease sensitivity */
+ if (data->auto_corr_cck < AUTO_CORR_MAX_TH_CCK)
+ data->auto_corr_cck = AUTO_CORR_MAX_TH_CCK + 1;
+ else {
+ val = data->auto_corr_cck + AUTO_CORR_STEP_CCK;
+ data->auto_corr_cck = min((u32)AUTO_CORR_MAX_CCK, val);
+ }
+ val = data->auto_corr_cck_mrc + AUTO_CORR_STEP_CCK;
+ data->auto_corr_cck_mrc = min((u32)AUTO_CORR_MAX_CCK_MRC, val);
+
+ /* Else if we got fewer than desired, increase sensitivity */
+ } else if (false_alarms < min_false_alarms) {
+ data->nrg_curr_state = IWL_FA_TOO_FEW;
+
+ /* Compare silence level with silence level for most recent
+ * healthy number or too many false alarms */
+ data->nrg_auto_corr_silence_diff = (s32)data->nrg_silence_ref -
+ (s32)silence_ref;
+
+ IWL_DEBUG_CALIB("norm FA %u < min FA %u, silence diff %d\n",
+ false_alarms, min_false_alarms,
+ data->nrg_auto_corr_silence_diff);
+
+ /* Increase value to increase sensitivity, but only if:
+ * 1a) previous beacon did *not* have *too many* false alarms
+ * 1b) AND there's a significant difference in Rx levels
+ * from a previous beacon with too many, or healthy # FAs
+ * OR 2) We've seen a lot of beacons (100) with too few
+ * false alarms */
+ if ((data->nrg_prev_state != IWL_FA_TOO_MANY) &&
+ ((data->nrg_auto_corr_silence_diff > NRG_DIFF) ||
+ (data->num_in_cck_no_fa > MAX_NUMBER_CCK_NO_FA))) {
+
+ IWL_DEBUG_CALIB("... increasing sensitivity\n");
+ /* Increase nrg value to increase sensitivity */
+ val = data->nrg_th_cck + NRG_STEP_CCK;
+ data->nrg_th_cck = min((u32)NRG_MIN_CCK, val);
+
+ /* Decrease auto_corr values to increase sensitivity */
+ val = data->auto_corr_cck - AUTO_CORR_STEP_CCK;
+ data->auto_corr_cck = max((u32)AUTO_CORR_MIN_CCK, val);
+
+ val = data->auto_corr_cck_mrc - AUTO_CORR_STEP_CCK;
+ data->auto_corr_cck_mrc =
+ max((u32)AUTO_CORR_MIN_CCK_MRC, val);
+
+ } else
+ IWL_DEBUG_CALIB("... but not changing sensitivity\n");
+
+ /* Else we got a healthy number of false alarms, keep status quo */
+ } else {
+ IWL_DEBUG_CALIB(" FA in safe zone\n");
+ data->nrg_curr_state = IWL_FA_GOOD_RANGE;
+
+ /* Store for use in "fewer than desired" with later beacon */
+ data->nrg_silence_ref = silence_ref;
+
+ /* If previous beacon had too many false alarms,
+ * give it some extra margin by reducing sensitivity again
+ * (but don't go below measured energy of desired Rx) */
+ if (IWL_FA_TOO_MANY == data->nrg_prev_state) {
+ IWL_DEBUG_CALIB("... increasing margin\n");
+ data->nrg_th_cck -= NRG_MARGIN;
+ }
+ }
+
+ /* Make sure the energy threshold does not go above the measured
+ * energy of the desired Rx signals (reduced by backoff margin),
+ * or else we might start missing Rx frames.
+ * Lower value is higher energy, so we use max()!
+ */
+ data->nrg_th_cck = max(max_nrg_cck, data->nrg_th_cck);
+ IWL_DEBUG_CALIB("new nrg_th_cck %u\n", data->nrg_th_cck);
+
+ data->nrg_prev_state = data->nrg_curr_state;
+
+ return 0;
+}
+
+
+static int iwl4965_sens_auto_corr_ofdm(struct iwl_priv *priv,
+ u32 norm_fa,
+ u32 rx_enable_time)
+{
+ u32 val;
+ u32 false_alarms = norm_fa * 200 * 1024;
+ u32 max_false_alarms = MAX_FA_OFDM * rx_enable_time;
+ u32 min_false_alarms = MIN_FA_OFDM * rx_enable_time;
+ struct iwl_sensitivity_data *data = NULL;
+
+ data = &(priv->sensitivity_data);
+
+ /* If we got too many false alarms this time, reduce sensitivity */
+ if (false_alarms > max_false_alarms) {
+
+ IWL_DEBUG_CALIB("norm FA %u > max FA %u)\n",
+ false_alarms, max_false_alarms);
+
+ val = data->auto_corr_ofdm + AUTO_CORR_STEP_OFDM;
+ data->auto_corr_ofdm =
+ min((u32)AUTO_CORR_MAX_OFDM, val);
+
+ val = data->auto_corr_ofdm_mrc + AUTO_CORR_STEP_OFDM;
+ data->auto_corr_ofdm_mrc =
+ min((u32)AUTO_CORR_MAX_OFDM_MRC, val);
+
+ val = data->auto_corr_ofdm_x1 + AUTO_CORR_STEP_OFDM;
+ data->auto_corr_ofdm_x1 =
+ min((u32)AUTO_CORR_MAX_OFDM_X1, val);
+
+ val = data->auto_corr_ofdm_mrc_x1 + AUTO_CORR_STEP_OFDM;
+ data->auto_corr_ofdm_mrc_x1 =
+ min((u32)AUTO_CORR_MAX_OFDM_MRC_X1, val);
+ }
+
+ /* Else if we got fewer than desired, increase sensitivity */
+ else if (false_alarms < min_false_alarms) {
+
+ IWL_DEBUG_CALIB("norm FA %u < min FA %u\n",
+ false_alarms, min_false_alarms);
+
+ val = data->auto_corr_ofdm - AUTO_CORR_STEP_OFDM;
+ data->auto_corr_ofdm =
+ max((u32)AUTO_CORR_MIN_OFDM, val);
+
+ val = data->auto_corr_ofdm_mrc - AUTO_CORR_STEP_OFDM;
+ data->auto_corr_ofdm_mrc =
+ max((u32)AUTO_CORR_MIN_OFDM_MRC, val);
+
+ val = data->auto_corr_ofdm_x1 - AUTO_CORR_STEP_OFDM;
+ data->auto_corr_ofdm_x1 =
+ max((u32)AUTO_CORR_MIN_OFDM_X1, val);
+
+ val = data->auto_corr_ofdm_mrc_x1 - AUTO_CORR_STEP_OFDM;
+ data->auto_corr_ofdm_mrc_x1 =
+ max((u32)AUTO_CORR_MIN_OFDM_MRC_X1, val);
+ }
+
+ else
+ IWL_DEBUG_CALIB("min FA %u < norm FA %u < max FA %u OK\n",
+ min_false_alarms, false_alarms, max_false_alarms);
+
+ return 0;
+}
+
+static int iwl_sensitivity_callback(struct iwl_priv *priv,
+ struct iwl_cmd *cmd, struct sk_buff *skb)
+{
+ /* We didn't cache the SKB; let the caller free it */
+ return 1;
+}
+
+/* Prepare a SENSITIVITY_CMD, send to uCode if values have changed */
+static int iwl4965_sensitivity_write(struct iwl_priv *priv, u8 flags)
+{
+ int rc = 0;
+ struct iwl_sensitivity_cmd cmd ;
+ struct iwl_sensitivity_data *data = NULL;
+ struct iwl_host_cmd cmd_out = {
+ .id = SENSITIVITY_CMD,
+ .len = sizeof(struct iwl_sensitivity_cmd),
+ .meta.flags = flags,
+ .data = &cmd,
+ };
+
+ data = &(priv->sensitivity_data);
+
+ memset(&cmd, 0, sizeof(cmd));
+
+ cmd.table[HD_AUTO_CORR32_X4_TH_ADD_MIN_INDEX] =
+ cpu_to_le16((u16)data->auto_corr_ofdm);
+ cmd.table[HD_AUTO_CORR32_X4_TH_ADD_MIN_MRC_INDEX] =
+ cpu_to_le16((u16)data->auto_corr_ofdm_mrc);
+ cmd.table[HD_AUTO_CORR32_X1_TH_ADD_MIN_INDEX] =
+ cpu_to_le16((u16)data->auto_corr_ofdm_x1);
+ cmd.table[HD_AUTO_CORR32_X1_TH_ADD_MIN_MRC_INDEX] =
+ cpu_to_le16((u16)data->auto_corr_ofdm_mrc_x1);
+
+ cmd.table[HD_AUTO_CORR40_X4_TH_ADD_MIN_INDEX] =
+ cpu_to_le16((u16)data->auto_corr_cck);
+ cmd.table[HD_AUTO_CORR40_X4_TH_ADD_MIN_MRC_INDEX] =
+ cpu_to_le16((u16)data->auto_corr_cck_mrc);
+
+ cmd.table[HD_MIN_ENERGY_CCK_DET_INDEX] =
+ cpu_to_le16((u16)data->nrg_th_cck);
+ cmd.table[HD_MIN_ENERGY_OFDM_DET_INDEX] =
+ cpu_to_le16((u16)data->nrg_th_ofdm);
+
+ cmd.table[HD_BARKER_CORR_TH_ADD_MIN_INDEX] =
+ __constant_cpu_to_le16(190);
+ cmd.table[HD_BARKER_CORR_TH_ADD_MIN_MRC_INDEX] =
+ __constant_cpu_to_le16(390);
+ cmd.table[HD_OFDM_ENERGY_TH_IN_INDEX] =
+ __constant_cpu_to_le16(62);
+
+ IWL_DEBUG_CALIB("ofdm: ac %u mrc %u x1 %u mrc_x1 %u thresh %u\n",
+ data->auto_corr_ofdm, data->auto_corr_ofdm_mrc,
+ data->auto_corr_ofdm_x1, data->auto_corr_ofdm_mrc_x1,
+ data->nrg_th_ofdm);
+
+ IWL_DEBUG_CALIB("cck: ac %u mrc %u thresh %u\n",
+ data->auto_corr_cck, data->auto_corr_cck_mrc,
+ data->nrg_th_cck);
+
+ cmd.control = SENSITIVITY_CMD_CONTROL_WORK_TABLE;
+
+ if (flags & CMD_ASYNC)
+ cmd_out.meta.u.callback = iwl_sensitivity_callback;
+
+ /* Don't send command to uCode if nothing has changed */
+ if (!memcmp(&cmd.table[0], &(priv->sensitivity_tbl[0]),
+ sizeof(u16)*HD_TABLE_SIZE)) {
+ IWL_DEBUG_CALIB("No change in SENSITIVITY_CMD\n");
+ return 0;
+ }
+
+ /* Copy table for comparison next time */
+ memcpy(&(priv->sensitivity_tbl[0]), &(cmd.table[0]),
+ sizeof(u16)*HD_TABLE_SIZE);
+
+ rc = iwl_send_cmd(priv, &cmd_out);
+ if (!rc) {
+ IWL_DEBUG_CALIB("SENSITIVITY_CMD succeeded\n");
+ return rc;
+ }
+
+ return 0;
+}
+
+void iwl4965_init_sensitivity(struct iwl_priv *priv, u8 flags, u8 force)
+{
+ int rc = 0;
+ int i;
+ struct iwl_sensitivity_data *data = NULL;
+
+ IWL_DEBUG_CALIB("Start iwl4965_init_sensitivity\n");
+
+ if (force)
+ memset(&(priv->sensitivity_tbl[0]), 0,
+ sizeof(u16)*HD_TABLE_SIZE);
+
+ /* Clear driver's sensitivity algo data */
+ data = &(priv->sensitivity_data);
+ memset(data, 0, sizeof(struct iwl_sensitivity_data));
+
+ data->num_in_cck_no_fa = 0;
+ data->nrg_curr_state = IWL_FA_TOO_MANY;
+ data->nrg_prev_state = IWL_FA_TOO_MANY;
+ data->nrg_silence_ref = 0;
+ data->nrg_silence_idx = 0;
+ data->nrg_energy_idx = 0;
+
+ for (i = 0; i < 10; i++)
+ data->nrg_value[i] = 0;
+
+ for (i = 0; i < NRG_NUM_PREV_STAT_L; i++)
+ data->nrg_silence_rssi[i] = 0;
+
+ data->auto_corr_ofdm = 90;
+ data->auto_corr_ofdm_mrc = 170;
+ data->auto_corr_ofdm_x1 = 105;
+ data->auto_corr_ofdm_mrc_x1 = 220;
+ data->auto_corr_cck = AUTO_CORR_CCK_MIN_VAL_DEF;
+ data->auto_corr_cck_mrc = 200;
+ data->nrg_th_cck = 100;
+ data->nrg_th_ofdm = 100;
+
+ data->last_bad_plcp_cnt_ofdm = 0;
+ data->last_fa_cnt_ofdm = 0;
+ data->last_bad_plcp_cnt_cck = 0;
+ data->last_fa_cnt_cck = 0;
+
+ /* Clear prior Sensitivity command data to force send to uCode */
+ if (force)
+ memset(&(priv->sensitivity_tbl[0]), 0,
+ sizeof(u16)*HD_TABLE_SIZE);
+
+ rc |= iwl4965_sensitivity_write(priv, flags);
+ IWL_DEBUG_CALIB("<<return 0x%X\n", rc);
+
+ return;
+}
+
+
+/* Reset differential Rx gains in NIC to prepare for chain noise calibration.
+ * Called after every association, but this runs only once!
+ * ... once chain noise is calibrated the first time, it's good forever. */
+void iwl4965_chain_noise_reset(struct iwl_priv *priv)
+{
+ struct iwl_chain_noise_data *data = NULL;
+ int rc = 0;
+
+ data = &(priv->chain_noise_data);
+ if ((data->state == IWL_CHAIN_NOISE_ALIVE) && iwl_is_associated(priv)) {
+ struct iwl_calibration_cmd cmd;
+
+ memset(&cmd, 0, sizeof(cmd));
+ cmd.opCode = PHY_CALIBRATE_DIFF_GAIN_CMD;
+ cmd.diff_gain_a = 0;
+ cmd.diff_gain_b = 0;
+ cmd.diff_gain_c = 0;
+ rc = iwl_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD,
+ sizeof(cmd), &cmd);
+ msleep(4);
+ data->state = IWL_CHAIN_NOISE_ACCUMULATE;
+ IWL_DEBUG_CALIB("Run chain_noise_calibrate\n");
+ }
+ return;
+}
+
+/*
+ * Accumulate 20 beacons of signal and noise statistics for each of
+ * 3 receivers/antennas/rx-chains, then figure out:
+ * 1) Which antennas are connected.
+ * 2) Differential rx gain settings to balance the 3 receivers.
+ */
+static void iwl4965_noise_calibration(struct iwl_priv *priv,
+ struct iwl_notif_statistics *stat_resp)
+{
+ struct iwl_chain_noise_data *data = NULL;
+ int rc = 0;
+
+ u32 chain_noise_a;
+ u32 chain_noise_b;
+ u32 chain_noise_c;
+ u32 chain_sig_a;
+ u32 chain_sig_b;
+ u32 chain_sig_c;
+ u32 average_sig[NUM_RX_CHAINS] = {INITIALIZATION_VALUE};
+ u32 average_noise[NUM_RX_CHAINS] = {INITIALIZATION_VALUE};
+ u32 max_average_sig;
+ u16 max_average_sig_antenna_i;
+ u32 min_average_noise = MIN_AVERAGE_NOISE_MAX_VALUE;
+ u16 min_average_noise_antenna_i = INITIALIZATION_VALUE;
+ u16 i = 0;
+ u16 chan_num = INITIALIZATION_VALUE;
+ u32 band = INITIALIZATION_VALUE;
+ u32 active_chains = 0;
+ unsigned long flags;
+ struct statistics_rx_non_phy *rx_info = &(stat_resp->rx.general);
+
+ data = &(priv->chain_noise_data);
+
+ /* Accumulate just the first 20 beacons after the first association,
+ * then we're done forever. */
+ if (data->state != IWL_CHAIN_NOISE_ACCUMULATE) {
+ if (data->state == IWL_CHAIN_NOISE_ALIVE)
+ IWL_DEBUG_CALIB("Wait for noise calib reset\n");
+ return;
+ }
+
+ spin_lock_irqsave(&priv->lock, flags);
+ if (rx_info->interference_data_flag != INTERFERENCE_DATA_AVAILABLE) {
+ IWL_DEBUG_CALIB(" << Interference data unavailable\n");
+ spin_unlock_irqrestore(&priv->lock, flags);
+ return;
+ }
+
+ band = (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) ? 0 : 1;
+ chan_num = le16_to_cpu(priv->staging_rxon.channel);
+
+ /* Make sure we accumulate data for just the associated channel
+ * (even if scanning). */
+ if ((chan_num != (le32_to_cpu(stat_resp->flag) >> 16)) ||
+ ((STATISTICS_REPLY_FLG_BAND_24G_MSK ==
+ (stat_resp->flag & STATISTICS_REPLY_FLG_BAND_24G_MSK)) && band)) {
+ IWL_DEBUG_CALIB("Stats not from chan=%d, band=%d\n",
+ chan_num, band);
+ spin_unlock_irqrestore(&priv->lock, flags);
+ return;
+ }
+
+ /* Accumulate beacon statistics values across 20 beacons */
+ chain_noise_a = le32_to_cpu(rx_info->beacon_silence_rssi_a) &
+ IN_BAND_FILTER;
+ chain_noise_b = le32_to_cpu(rx_info->beacon_silence_rssi_b) &
+ IN_BAND_FILTER;
+ chain_noise_c = le32_to_cpu(rx_info->beacon_silence_rssi_c) &
+ IN_BAND_FILTER;
+
+ chain_sig_a = le32_to_cpu(rx_info->beacon_rssi_a) & IN_BAND_FILTER;
+ chain_sig_b = le32_to_cpu(rx_info->beacon_rssi_b) & IN_BAND_FILTER;
+ chain_sig_c = le32_to_cpu(rx_info->beacon_rssi_c) & IN_BAND_FILTER;
+
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ data->beacon_count++;
+
+ data->chain_noise_a = (chain_noise_a + data->chain_noise_a);
+ data->chain_noise_b = (chain_noise_b + data->chain_noise_b);
+ data->chain_noise_c = (chain_noise_c + data->chain_noise_c);
+
+ data->chain_signal_a = (chain_sig_a + data->chain_signal_a);
+ data->chain_signal_b = (chain_sig_b + data->chain_signal_b);
+ data->chain_signal_c = (chain_sig_c + data->chain_signal_c);
+
+ IWL_DEBUG_CALIB("chan=%d, band=%d, beacon=%d\n", chan_num, band,
+ data->beacon_count);
+ IWL_DEBUG_CALIB("chain_sig: a %d b %d c %d\n",
+ chain_sig_a, chain_sig_b, chain_sig_c);
+ IWL_DEBUG_CALIB("chain_noise: a %d b %d c %d\n",
+ chain_noise_a, chain_noise_b, chain_noise_c);
+
+ /* If this is the 20th beacon, determine:
+ * 1) Disconnected antennas (using signal strengths)
+ * 2) Differential gain (using silence noise) to balance receivers */
+ if (data->beacon_count == CAL_NUM_OF_BEACONS) {
+
+ /* Analyze signal for disconnected antenna */
+ average_sig[0] = (data->chain_signal_a) / CAL_NUM_OF_BEACONS;
+ average_sig[1] = (data->chain_signal_b) / CAL_NUM_OF_BEACONS;
+ average_sig[2] = (data->chain_signal_c) / CAL_NUM_OF_BEACONS;
+
+ if (average_sig[0] >= average_sig[1]) {
+ max_average_sig = average_sig[0];
+ max_average_sig_antenna_i = 0;
+ active_chains = (1 << max_average_sig_antenna_i);
+ } else {
+ max_average_sig = average_sig[1];
+ max_average_sig_antenna_i = 1;
+ active_chains = (1 << max_average_sig_antenna_i);
+ }
+
+ if (average_sig[2] >= max_average_sig) {
+ max_average_sig = average_sig[2];
+ max_average_sig_antenna_i = 2;
+ active_chains = (1 << max_average_sig_antenna_i);
+ }
+
+ IWL_DEBUG_CALIB("average_sig: a %d b %d c %d\n",
+ average_sig[0], average_sig[1], average_sig[2]);
+ IWL_DEBUG_CALIB("max_average_sig = %d, antenna %d\n",
+ max_average_sig, max_average_sig_antenna_i);
+
+ /* Compare signal strengths for all 3 receivers. */
+ for (i = 0; i < NUM_RX_CHAINS; i++) {
+ if (i != max_average_sig_antenna_i) {
+ s32 rssi_delta = (max_average_sig -
+ average_sig[i]);
+
+ /* If signal is very weak, compared with
+ * strongest, mark it as disconnected. */
+ if (rssi_delta > MAXIMUM_ALLOWED_PATHLOSS)
+ data->disconn_array[i] = 1;
+ else
+ active_chains |= (1 << i);
+ IWL_DEBUG_CALIB("i = %d rssiDelta = %d "
+ "disconn_array[i] = %d\n",
+ i, rssi_delta, data->disconn_array[i]);
+ }
+ }
+
+ /*If both chains A & B are disconnected -
+ * connect B and leave A as is */
+ if (data->disconn_array[CHAIN_A] &&
+ data->disconn_array[CHAIN_B]) {
+ data->disconn_array[CHAIN_B] = 0;
+ active_chains |= (1 << CHAIN_B);
+ IWL_DEBUG_CALIB("both A & B chains are disconnected! "
+ "W/A - declare B as connected\n");
+ }
+
+ IWL_DEBUG_CALIB("active_chains (bitwise) = 0x%x\n",
+ active_chains);
+
+ /* Save for use within RXON, TX, SCAN commands, etc. */
+ priv->valid_antenna = active_chains;
+
+ /* Analyze noise for rx balance */
+ average_noise[0] = ((data->chain_noise_a)/CAL_NUM_OF_BEACONS);
+ average_noise[1] = ((data->chain_noise_b)/CAL_NUM_OF_BEACONS);
+ average_noise[2] = ((data->chain_noise_c)/CAL_NUM_OF_BEACONS);
+
+ for (i = 0; i < NUM_RX_CHAINS; i++) {
+ if (!(data->disconn_array[i]) &&
+ (average_noise[i] <= min_average_noise)) {
+ /* This means that chain i is active and has
+ * lower noise values so far: */
+ min_average_noise = average_noise[i];
+ min_average_noise_antenna_i = i;
+ }
+ }
+
+ data->delta_gain_code[min_average_noise_antenna_i] = 0;
+
+ IWL_DEBUG_CALIB("average_noise: a %d b %d c %d\n",
+ average_noise[0], average_noise[1],
+ average_noise[2]);
+
+ IWL_DEBUG_CALIB("min_average_noise = %d, antenna %d\n",
+ min_average_noise, min_average_noise_antenna_i);
+
+ for (i = 0; i < NUM_RX_CHAINS; i++) {
+ s32 delta_g = 0;
+
+ if (!(data->disconn_array[i]) &&
+ (data->delta_gain_code[i] ==
+ CHAIN_NOISE_DELTA_GAIN_INIT_VAL)) {
+ delta_g = average_noise[i] - min_average_noise;
+ data->delta_gain_code[i] = (u8)((delta_g *
+ 10) / 15);
+ if (CHAIN_NOISE_MAX_DELTA_GAIN_CODE <
+ data->delta_gain_code[i])
+ data->delta_gain_code[i] =
+ CHAIN_NOISE_MAX_DELTA_GAIN_CODE;
+
+ data->delta_gain_code[i] =
+ (data->delta_gain_code[i] | (1 << 2));
+ } else
+ data->delta_gain_code[i] = 0;
+ }
+ IWL_DEBUG_CALIB("delta_gain_codes: a %d b %d c %d\n",
+ data->delta_gain_code[0],
+ data->delta_gain_code[1],
+ data->delta_gain_code[2]);
+
+ /* Differential gain gets sent to uCode only once */
+ if (!data->radio_write) {
+ struct iwl_calibration_cmd cmd;
+ data->radio_write = 1;
+
+ memset(&cmd, 0, sizeof(cmd));
+ cmd.opCode = PHY_CALIBRATE_DIFF_GAIN_CMD;
+ cmd.diff_gain_a = data->delta_gain_code[0];
+ cmd.diff_gain_b = data->delta_gain_code[1];
+ cmd.diff_gain_c = data->delta_gain_code[2];
+ rc = iwl_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD,
+ sizeof(cmd), &cmd);
+ if (rc)
+ IWL_DEBUG_CALIB("fail sending cmd "
+ "REPLY_PHY_CALIBRATION_CMD \n");
+
+ /* TODO we might want recalculate
+ * rx_chain in rxon cmd */
+
+ /* Mark so we run this algo only once! */
+ data->state = IWL_CHAIN_NOISE_CALIBRATED;
+ }
+ data->chain_noise_a = 0;
+ data->chain_noise_b = 0;
+ data->chain_noise_c = 0;
+ data->chain_signal_a = 0;
+ data->chain_signal_b = 0;
+ data->chain_signal_c = 0;
+ data->beacon_count = 0;
+ }
+ return;
+}
+
+static void iwl4965_sensitivity_calibration(struct iwl_priv *priv,
+ struct iwl_notif_statistics *resp)
+{
+ int rc = 0;
+ u32 rx_enable_time;
+ u32 fa_cck;
+ u32 fa_ofdm;
+ u32 bad_plcp_cck;
+ u32 bad_plcp_ofdm;
+ u32 norm_fa_ofdm;
+ u32 norm_fa_cck;
+ struct iwl_sensitivity_data *data = NULL;
+ struct statistics_rx_non_phy *rx_info = &(resp->rx.general);
+ struct statistics_rx *statistics = &(resp->rx);
+ unsigned long flags;
+ struct statistics_general_data statis;
+
+ data = &(priv->sensitivity_data);
+
+ if (!iwl_is_associated(priv)) {
+ IWL_DEBUG_CALIB("<< - not associated\n");
+ return;
+ }
+
+ spin_lock_irqsave(&priv->lock, flags);
+ if (rx_info->interference_data_flag != INTERFERENCE_DATA_AVAILABLE) {
+ IWL_DEBUG_CALIB("<< invalid data.\n");
+ spin_unlock_irqrestore(&priv->lock, flags);
+ return;
+ }
+
+ /* Extract Statistics: */
+ rx_enable_time = le32_to_cpu(rx_info->channel_load);
+ fa_cck = le32_to_cpu(statistics->cck.false_alarm_cnt);
+ fa_ofdm = le32_to_cpu(statistics->ofdm.false_alarm_cnt);
+ bad_plcp_cck = le32_to_cpu(statistics->cck.plcp_err);
+ bad_plcp_ofdm = le32_to_cpu(statistics->ofdm.plcp_err);
+
+ statis.beacon_silence_rssi_a =
+ le32_to_cpu(statistics->general.beacon_silence_rssi_a);
+ statis.beacon_silence_rssi_b =
+ le32_to_cpu(statistics->general.beacon_silence_rssi_b);
+ statis.beacon_silence_rssi_c =
+ le32_to_cpu(statistics->general.beacon_silence_rssi_c);
+ statis.beacon_energy_a =
+ le32_to_cpu(statistics->general.beacon_energy_a);
+ statis.beacon_energy_b =
+ le32_to_cpu(statistics->general.beacon_energy_b);
+ statis.beacon_energy_c =
+ le32_to_cpu(statistics->general.beacon_energy_c);
+
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ IWL_DEBUG_CALIB("rx_enable_time = %u usecs\n", rx_enable_time);
+
+ if (!rx_enable_time) {
+ IWL_DEBUG_CALIB("<< RX Enable Time == 0! \n");
+ return;
+ }
+
+ /* These statistics increase monotonically, and do not reset
+ * at each beacon. Calculate difference from last value, or just
+ * use the new statistics value if it has reset or wrapped around. */
+ if (data->last_bad_plcp_cnt_cck > bad_plcp_cck)
+ data->last_bad_plcp_cnt_cck = bad_plcp_cck;
+ else {
+ bad_plcp_cck -= data->last_bad_plcp_cnt_cck;
+ data->last_bad_plcp_cnt_cck += bad_plcp_cck;
+ }
+
+ if (data->last_bad_plcp_cnt_ofdm > bad_plcp_ofdm)
+ data->last_bad_plcp_cnt_ofdm = bad_plcp_ofdm;
+ else {
+ bad_plcp_ofdm -= data->last_bad_plcp_cnt_ofdm;
+ data->last_bad_plcp_cnt_ofdm += bad_plcp_ofdm;
+ }
+
+ if (data->last_fa_cnt_ofdm > fa_ofdm)
+ data->last_fa_cnt_ofdm = fa_ofdm;
+ else {
+ fa_ofdm -= data->last_fa_cnt_ofdm;
+ data->last_fa_cnt_ofdm += fa_ofdm;
+ }
+
+ if (data->last_fa_cnt_cck > fa_cck)
+ data->last_fa_cnt_cck = fa_cck;
+ else {
+ fa_cck -= data->last_fa_cnt_cck;
+ data->last_fa_cnt_cck += fa_cck;
+ }
+
+ /* Total aborted signal locks */
+ norm_fa_ofdm = fa_ofdm + bad_plcp_ofdm;
+ norm_fa_cck = fa_cck + bad_plcp_cck;
+
+ IWL_DEBUG_CALIB("cck: fa %u badp %u ofdm: fa %u badp %u\n", fa_cck,
+ bad_plcp_cck, fa_ofdm, bad_plcp_ofdm);
+
+ iwl4965_sens_auto_corr_ofdm(priv, norm_fa_ofdm, rx_enable_time);
+ iwl4965_sens_energy_cck(priv, norm_fa_cck, rx_enable_time, &statis);
+ rc |= iwl4965_sensitivity_write(priv, CMD_ASYNC);
+
+ return;
+}
+
+static void iwl4965_bg_sensitivity_work(struct work_struct *work)
+{
+ struct iwl_priv *priv = container_of(work, struct iwl_priv,
+ sensitivity_work);
+
+ mutex_lock(&priv->mutex);
+
+ if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
+ test_bit(STATUS_SCANNING, &priv->status)) {
+ mutex_unlock(&priv->mutex);
+ return;
+ }
+
+ if (priv->start_calib) {
+ iwl4965_noise_calibration(priv, &priv->statistics);
+
+ if (priv->sensitivity_data.state ==
+ IWL_SENS_CALIB_NEED_REINIT) {
+ iwl4965_init_sensitivity(priv, CMD_ASYNC, 0);
+ priv->sensitivity_data.state = IWL_SENS_CALIB_ALLOWED;
+ } else
+ iwl4965_sensitivity_calibration(priv,
+ &priv->statistics);
+ }
+
+ mutex_unlock(&priv->mutex);
+ return;
+}
+#endif /*CONFIG_IWLWIFI_SENSITIVITY*/
+
+static void iwl4965_bg_txpower_work(struct work_struct *work)
+{
+ struct iwl_priv *priv = container_of(work, struct iwl_priv,
+ txpower_work);
+
+ /* If a scan happened to start before we got here
+ * then just return; the statistics notification will
+ * kick off another scheduled work to compensate for
+ * any temperature delta we missed here. */
+ if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
+ test_bit(STATUS_SCANNING, &priv->status))
+ return;
+
+ mutex_lock(&priv->mutex);
+
+ /* Regardless of if we are assocaited, we must reconfigure the
+ * TX power since frames can be sent on non-radar channels while
+ * not associated */
+ iwl_hw_reg_send_txpower(priv);
+
+ /* Update last_temperature to keep is_calib_needed from running
+ * when it isn't needed... */
+ priv->last_temperature = priv->temperature;
+
+ mutex_unlock(&priv->mutex);
+}
+
+/*
+ * Acquire priv->lock before calling this function !
+ */
+static void iwl4965_set_wr_ptrs(struct iwl_priv *priv, int txq_id, u32 index)
+{
+ iwl_write_restricted(priv, HBUS_TARG_WRPTR,
+ (index & 0xff) | (txq_id << 8));
+ iwl_write_restricted_reg(priv, SCD_QUEUE_RDPTR(txq_id), index);
+}
+
+/*
+ * Acquire priv->lock before calling this function !
+ */
+static void iwl4965_tx_queue_set_status(struct iwl_priv *priv,
+ struct iwl_tx_queue *txq,
+ int tx_fifo_id, int scd_retry)
+{
+ int txq_id = txq->q.id;
+ int active = test_bit(txq_id, &priv->txq_ctx_active_msk)?1:0;
+
+ iwl_write_restricted_reg(priv, SCD_QUEUE_STATUS_BITS(txq_id),
+ (active << SCD_QUEUE_STTS_REG_POS_ACTIVE) |
+ (tx_fifo_id << SCD_QUEUE_STTS_REG_POS_TXF) |
+ (scd_retry << SCD_QUEUE_STTS_REG_POS_WSL) |
+ (scd_retry << SCD_QUEUE_STTS_REG_POS_SCD_ACK) |
+ SCD_QUEUE_STTS_REG_MSK);
+
+ txq->sched_retry = scd_retry;
+
+ IWL_DEBUG_INFO("%s %s Queue %d on AC %d\n",
+ active ? "Activete" : "Deactivate",
+ scd_retry ? "BA" : "AC", txq_id, tx_fifo_id);
+}
+
+static const u16 default_queue_to_tx_fifo[] = {
+ IWL_TX_FIFO_AC3,
+ IWL_TX_FIFO_AC2,
+ IWL_TX_FIFO_AC1,
+ IWL_TX_FIFO_AC0,
+ IWL_CMD_FIFO_NUM,
+ IWL_TX_FIFO_HCCA_1,
+ IWL_TX_FIFO_HCCA_2
+};
+
+static inline void iwl4965_txq_ctx_activate(struct iwl_priv *priv, int txq_id)
+{
+ set_bit(txq_id, &priv->txq_ctx_active_msk);
+}
+
+static inline void iwl4965_txq_ctx_deactivate(struct iwl_priv *priv, int txq_id)
+{
+ clear_bit(txq_id, &priv->txq_ctx_active_msk);
+}
+
+int iwl4965_alive_notify(struct iwl_priv *priv)
+{
+ u32 a;
+ int i = 0;
+ unsigned long flags;
+ int rc;
+
+ spin_lock_irqsave(&priv->lock, flags);
+
+#ifdef CONFIG_IWLWIFI_SENSITIVITY
+ memset(&(priv->sensitivity_data), 0,
+ sizeof(struct iwl_sensitivity_data));
+ memset(&(priv->chain_noise_data), 0,
+ sizeof(struct iwl_chain_noise_data));
+ for (i = 0; i < NUM_RX_CHAINS; i++)
+ priv->chain_noise_data.delta_gain_code[i] =
+ CHAIN_NOISE_DELTA_GAIN_INIT_VAL;
+#endif /* CONFIG_IWLWIFI_SENSITIVITY*/
+ rc = iwl_grab_restricted_access(priv);
+ if (rc) {
+ spin_unlock_irqrestore(&priv->lock, flags);
+ return rc;
+ }
+
+ priv->scd_base_addr = iwl_read_restricted_reg(priv, SCD_SRAM_BASE_ADDR);
+ a = priv->scd_base_addr + SCD_CONTEXT_DATA_OFFSET;
+ for (; a < priv->scd_base_addr + SCD_TX_STTS_BITMAP_OFFSET; a += 4)
+ iwl_write_restricted_mem(priv, a, 0);
+ for (; a < priv->scd_base_addr + SCD_TRANSLATE_TBL_OFFSET; a += 4)
+ iwl_write_restricted_mem(priv, a, 0);
+ for (; a < sizeof(u16) * priv->hw_setting.max_txq_num; a += 4)
+ iwl_write_restricted_mem(priv, a, 0);
+
+ iwl_write_restricted_reg(priv, SCD_DRAM_BASE_ADDR,
+ (priv->hw_setting.shared_phys +
+ offsetof(struct iwl_shared, queues_byte_cnt_tbls)) >> 10);
+ iwl_write_restricted_reg(priv, SCD_QUEUECHAIN_SEL, 0);
+
+ /* initiate the queues */
+ for (i = 0; i < priv->hw_setting.max_txq_num; i++) {
+ iwl_write_restricted_reg(priv, SCD_QUEUE_RDPTR(i), 0);
+ iwl_write_restricted(priv, HBUS_TARG_WRPTR, 0 | (i << 8));
+ iwl_write_restricted_mem(priv, priv->scd_base_addr +
+ SCD_CONTEXT_QUEUE_OFFSET(i),
+ (SCD_WIN_SIZE <<
+ SCD_QUEUE_CTX_REG1_WIN_SIZE_POS) &
+ SCD_QUEUE_CTX_REG1_WIN_SIZE_MSK);
+ iwl_write_restricted_mem(priv, priv->scd_base_addr +
+ SCD_CONTEXT_QUEUE_OFFSET(i) +
+ sizeof(u32),
+ (SCD_FRAME_LIMIT <<
+ SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS) &
+ SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK);
+
+ }
+ iwl_write_restricted_reg(priv, SCD_INTERRUPT_MASK,
+ (1 << priv->hw_setting.max_txq_num) - 1);
+
+ iwl_write_restricted_reg(priv, SCD_TXFACT,
+ SCD_TXFACT_REG_TXFIFO_MASK(0, 7));
+
+ iwl4965_set_wr_ptrs(priv, IWL_CMD_QUEUE_NUM, 0);
+ /* map qos queues to fifos one-to-one */
+ for (i = 0; i < ARRAY_SIZE(default_queue_to_tx_fifo); i++) {
+ int ac = default_queue_to_tx_fifo[i];
+ iwl4965_txq_ctx_activate(priv, i);
+ iwl4965_tx_queue_set_status(priv, &priv->txq[i], ac, 0);
+ }
+
+ iwl_release_restricted_access(priv);
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ return 0;
+}
+
+int iwl_hw_set_hw_setting(struct iwl_priv *priv)
+{
+ priv->hw_setting.shared_virt =
+ pci_alloc_consistent(priv->pci_dev,
+ sizeof(struct iwl_shared),
+ &priv->hw_setting.shared_phys);
+
+ if (!priv->hw_setting.shared_virt)
+ return -1;
+
+ memset(priv->hw_setting.shared_virt, 0, sizeof(struct iwl_shared));
+
+ priv->hw_setting.max_txq_num = iwl_param_queues_num;
+ priv->hw_setting.ac_queue_count = AC_NUM;
+
+ priv->hw_setting.cck_flag = RATE_MCS_CCK_MSK;
+ priv->hw_setting.tx_cmd_len = sizeof(struct iwl_tx_cmd);
+ priv->hw_setting.max_rxq_size = RX_QUEUE_SIZE;
+ priv->hw_setting.max_rxq_log = RX_QUEUE_SIZE_LOG;
+
+ priv->hw_setting.max_stations = IWL4965_STATION_COUNT;
+ priv->hw_setting.bcast_sta_id = IWL4965_BROADCAST_ID;
+ return 0;
+}
+
+/**
+ * iwl_hw_txq_ctx_free - Free TXQ Context
+ *
+ * Destroy all TX DMA queues and structures
+ */
+void iwl_hw_txq_ctx_free(struct iwl_priv *priv)
+{
+ int txq_id;
+
+ /* Tx queues */
+ for (txq_id = 0; txq_id < priv->hw_setting.max_txq_num; txq_id++)
+ iwl_tx_queue_free(priv, &priv->txq[txq_id]);
+
+ iwl4965_kw_free(priv);
+}
+
+/**
+ * iwl_hw_txq_free_tfd - Free one TFD, those at index [txq->q.last_used]
+ *
+ * Does NOT advance any indexes
+ */
+int iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
+{
+ struct iwl_tfd_frame *bd_tmp = (struct iwl_tfd_frame *)&txq->bd[0];
+ struct iwl_tfd_frame *bd = &bd_tmp[txq->q.last_used];
+ struct pci_dev *dev = priv->pci_dev;
+ int i;
+ int counter = 0;
+ int index, is_odd;
+
+ /* classify bd */
+ if (txq->q.id == IWL_CMD_QUEUE_NUM)
+ /* nothing to cleanup after for host commands */
+ return 0;
+
+ /* sanity check */
+ counter = IWL_GET_BITS(*bd, num_tbs);
+ if (counter > MAX_NUM_OF_TBS) {
+ IWL_ERROR("Too many chunks: %i\n", counter);
+ /* @todo issue fatal error, it is quite serious situation */
+ return 0;
+ }
+
+ /* unmap chunks if any */
+
+ for (i = 0; i < counter; i++) {
+ index = i / 2;
+ is_odd = i & 0x1;
+
+ if (is_odd)
+ pci_unmap_single(
+ dev,
+ IWL_GET_BITS(bd->pa[index], tb2_addr_lo16) |
+ (IWL_GET_BITS(bd->pa[index],
+ tb2_addr_hi20) << 16),
+ IWL_GET_BITS(bd->pa[index], tb2_len),
+ PCI_DMA_TODEVICE);
+
+ else if (i > 0)
+ pci_unmap_single(dev,
+ le32_to_cpu(bd->pa[index].tb1_addr),
+ IWL_GET_BITS(bd->pa[index], tb1_len),
+ PCI_DMA_TODEVICE);
+
+ if (txq->txb[txq->q.last_used].skb[i]) {
+ struct sk_buff *skb = txq->txb[txq->q.last_used].skb[i];
+
+ dev_kfree_skb(skb);
+ txq->txb[txq->q.last_used].skb[i] = NULL;
+ }
+ }
+ return 0;
+}
+
+int iwl_hw_reg_set_txpower(struct iwl_priv *priv, s8 power)
+{
+ IWL_ERROR("TODO: Implement iwl_hw_reg_set_txpower!\n");
+ return -EINVAL;
+}
+
+static s32 iwl4965_math_div_round(s32 num, s32 denom, s32 *res)
+{
+ s32 sign = 1;
+
+ if (num < 0) {
+ sign = -sign;
+ num = -num;
+ }
+ if (denom < 0) {
+ sign = -sign;
+ denom = -denom;
+ }
+ *res = 1;
+ *res = ((num * 2 + denom) / (denom * 2)) * sign;
+
+ return 1;
+}
+
+static s32 iwl4965_get_voltage_compensation(s32 eeprom_voltage,
+ s32 current_voltage)
+{
+ s32 comp = 0;
+
+ if ((TX_POWER_IWL_ILLEGAL_VOLTAGE == eeprom_voltage) ||
+ (TX_POWER_IWL_ILLEGAL_VOLTAGE == current_voltage))
+ return 0;
+
+ iwl4965_math_div_round(current_voltage - eeprom_voltage,
+ TX_POWER_IWL_VOLTAGE_CODES_PER_03V, &comp);
+
+ if (current_voltage > eeprom_voltage)
+ comp *= 2;
+ if ((comp < -2) || (comp > 2))
+ comp = 0;
+
+ return comp;
+}
+
+static const struct iwl_channel_info *
+iwl4965_get_channel_txpower_info(struct iwl_priv *priv, u8 phymode, u16 channel)
+{
+ const struct iwl_channel_info *ch_info;
+
+ ch_info = iwl_get_channel_info(priv, phymode, channel);
+
+ if (!is_channel_valid(ch_info))
+ return NULL;
+
+ return ch_info;
+}
+
+static s32 iwl4965_get_tx_atten_grp(u16 channel)
+{
+ if (channel >= CALIB_IWL_TX_ATTEN_GR5_FCH &&
+ channel <= CALIB_IWL_TX_ATTEN_GR5_LCH)
+ return CALIB_CH_GROUP_5;
+
+ if (channel >= CALIB_IWL_TX_ATTEN_GR1_FCH &&
+ channel <= CALIB_IWL_TX_ATTEN_GR1_LCH)
+ return CALIB_CH_GROUP_1;
+
+ if (channel >= CALIB_IWL_TX_ATTEN_GR2_FCH &&
+ channel <= CALIB_IWL_TX_ATTEN_GR2_LCH)
+ return CALIB_CH_GROUP_2;
+
+ if (channel >= CALIB_IWL_TX_ATTEN_GR3_FCH &&
+ channel <= CALIB_IWL_TX_ATTEN_GR3_LCH)
+ return CALIB_CH_GROUP_3;
+
+ if (channel >= CALIB_IWL_TX_ATTEN_GR4_FCH &&
+ channel <= CALIB_IWL_TX_ATTEN_GR4_LCH)
+ return CALIB_CH_GROUP_4;
+
+ IWL_ERROR("Can't find txatten group for channel %d.\n", channel);
+ return -1;
+}
+
+static u32 iwl4965_get_sub_band(const struct iwl_priv *priv, u32 channel)
+{
+ s32 b = -1;
+
+ for (b = 0; b < EEPROM_TX_POWER_BANDS; b++) {
+ if (priv->eeprom.calib_info.band_info[b].ch_from == 0)
+ continue;
+
+ if ((channel >= priv->eeprom.calib_info.band_info[b].ch_from)
+ && (channel <= priv->eeprom.calib_info.band_info[b].ch_to))
+ break;
+ }
+
+ return b;
+}
+
+static s32 iwl4965_interpolate_value(s32 x, s32 x1, s32 y1, s32 x2, s32 y2)
+{
+ s32 val;
+
+ if (x2 == x1)
+ return y1;
+ else {
+ iwl4965_math_div_round((x2 - x) * (y1 - y2), (x2 - x1), &val);
+ return val + y2;
+ }
+}
+
+static int iwl4965_interpolate_chan(struct iwl_priv *priv, u32 channel,
+ struct iwl_eeprom_calib_ch_info *chan_info)
+{
+ s32 s = -1;
+ u32 c;
+ u32 m;
+ const struct iwl_eeprom_calib_measure *m1;
+ const struct iwl_eeprom_calib_measure *m2;
+ struct iwl_eeprom_calib_measure *omeas;
+ u32 ch_i1;
+ u32 ch_i2;
+
+ s = iwl4965_get_sub_band(priv, channel);
+ if (s >= EEPROM_TX_POWER_BANDS) {
+ IWL_ERROR("Tx Power can not find channel %d ", channel);
+ return -1;
+ }
+
+ ch_i1 = priv->eeprom.calib_info.band_info[s].ch1.ch_num;
+ ch_i2 = priv->eeprom.calib_info.band_info[s].ch2.ch_num;
+ chan_info->ch_num = (u8) channel;
+
+ IWL_DEBUG_TXPOWER("channel %d subband %d factory cal ch %d & %d\n",
+ channel, s, ch_i1, ch_i2);
+
+ for (c = 0; c < EEPROM_TX_POWER_TX_CHAINS; c++) {
+ for (m = 0; m < EEPROM_TX_POWER_MEASUREMENTS; m++) {
+ m1 = &(priv->eeprom.calib_info.band_info[s].ch1.
+ measurements[c][m]);
+ m2 = &(priv->eeprom.calib_info.band_info[s].ch2.
+ measurements[c][m]);
+ omeas = &(chan_info->measurements[c][m]);
+
+ omeas->actual_pow =
+ (u8) iwl4965_interpolate_value(channel, ch_i1,
+ m1->actual_pow,
+ ch_i2,
+ m2->actual_pow);
+ omeas->gain_idx =
+ (u8) iwl4965_interpolate_value(channel, ch_i1,
+ m1->gain_idx, ch_i2,
+ m2->gain_idx);
+ omeas->temperature =
+ (u8) iwl4965_interpolate_value(channel, ch_i1,
+ m1->temperature,
+ ch_i2,
+ m2->temperature);
+ omeas->pa_det =
+ (s8) iwl4965_interpolate_value(channel, ch_i1,
+ m1->pa_det, ch_i2,
+ m2->pa_det);
+
+ IWL_DEBUG_TXPOWER
+ ("chain %d meas %d AP1=%d AP2=%d AP=%d\n", c, m,
+ m1->actual_pow, m2->actual_pow, omeas->actual_pow);
+ IWL_DEBUG_TXPOWER
+ ("chain %d meas %d NI1=%d NI2=%d NI=%d\n", c, m,
+ m1->gain_idx, m2->gain_idx, omeas->gain_idx);
+ IWL_DEBUG_TXPOWER
+ ("chain %d meas %d PA1=%d PA2=%d PA=%d\n", c, m,
+ m1->pa_det, m2->pa_det, omeas->pa_det);
+ IWL_DEBUG_TXPOWER
+ ("chain %d meas %d T1=%d T2=%d T=%d\n", c, m,
+ m1->temperature, m2->temperature,
+ omeas->temperature);
+ }
+ }
+
+ return 0;
+}
+
+/* bit-rate-dependent table to prevent Tx distortion, in half-dB units,
+ * for OFDM 6, 12, 18, 24, 36, 48, 54, 60 MBit, and CCK all rates. */
+static s32 back_off_table[] = {
+ 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM SISO 20 MHz */
+ 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM MIMO 20 MHz */
+ 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM SISO 40 MHz */
+ 10, 10, 10, 10, 10, 15, 17, 20, /* OFDM MIMO 40 MHz */
+ 10 /* CCK */
+};
+
+/* Thermal compensation values for txpower for various frequency ranges ...
+ * ratios from 3:1 to 4.5:1 of degrees (Celsius) per half-dB gain adjust */
+static struct iwl_txpower_comp_entry {
+ s32 degrees_per_05db_a;
+ s32 degrees_per_05db_a_denom;
+} tx_power_cmp_tble[CALIB_CH_GROUP_MAX] = {
+ {9, 2}, /* group 0 5.2, ch 34-43 */
+ {4, 1}, /* group 1 5.2, ch 44-70 */
+ {4, 1}, /* group 2 5.2, ch 71-124 */
+ {4, 1}, /* group 3 5.2, ch 125-200 */
+ {3, 1} /* group 4 2.4, ch all */
+};
+
+static s32 get_min_power_index(s32 rate_power_index, u32 band)
+{
+ if (!band) {
+ if ((rate_power_index & 7) <= 4)
+ return MIN_TX_GAIN_INDEX_52GHZ_EXT;
+ }
+ return MIN_TX_GAIN_INDEX;
+}
+
+struct gain_entry {
+ u8 dsp;
+ u8 radio;
+};
+
+static const struct gain_entry gain_table[2][108] = {
+ /* 5.2GHz power gain index table */
+ {
+ {123, 0x3F}, /* highest txpower */
+ {117, 0x3F},
+ {110, 0x3F},
+ {104, 0x3F},
+ {98, 0x3F},
+ {110, 0x3E},
+ {104, 0x3E},
+ {98, 0x3E},
+ {110, 0x3D},
+ {104, 0x3D},
+ {98, 0x3D},
+ {110, 0x3C},
+ {104, 0x3C},
+ {98, 0x3C},
+ {110, 0x3B},
+ {104, 0x3B},
+ {98, 0x3B},
+ {110, 0x3A},
+ {104, 0x3A},
+ {98, 0x3A},
+ {110, 0x39},
+ {104, 0x39},
+ {98, 0x39},
+ {110, 0x38},
+ {104, 0x38},
+ {98, 0x38},
+ {110, 0x37},
+ {104, 0x37},
+ {98, 0x37},
+ {110, 0x36},
+ {104, 0x36},
+ {98, 0x36},
+ {110, 0x35},
+ {104, 0x35},
+ {98, 0x35},
+ {110, 0x34},
+ {104, 0x34},
+ {98, 0x34},
+ {110, 0x33},
+ {104, 0x33},
+ {98, 0x33},
+ {110, 0x32},
+ {104, 0x32},
+ {98, 0x32},
+ {110, 0x31},
+ {104, 0x31},
+ {98, 0x31},
+ {110, 0x30},
+ {104, 0x30},
+ {98, 0x30},
+ {110, 0x25},
+ {104, 0x25},
+ {98, 0x25},
+ {110, 0x24},
+ {104, 0x24},
+ {98, 0x24},
+ {110, 0x23},
+ {104, 0x23},
+ {98, 0x23},
+ {110, 0x22},
+ {104, 0x18},
+ {98, 0x18},
+ {110, 0x17},
+ {104, 0x17},
+ {98, 0x17},
+ {110, 0x16},
+ {104, 0x16},
+ {98, 0x16},
+ {110, 0x15},
+ {104, 0x15},
+ {98, 0x15},
+ {110, 0x14},
+ {104, 0x14},
+ {98, 0x14},
+ {110, 0x13},
+ {104, 0x13},
+ {98, 0x13},
+ {110, 0x12},
+ {104, 0x08},
+ {98, 0x08},
+ {110, 0x07},
+ {104, 0x07},
+ {98, 0x07},
+ {110, 0x06},
+ {104, 0x06},
+ {98, 0x06},
+ {110, 0x05},
+ {104, 0x05},
+ {98, 0x05},
+ {110, 0x04},
+ {104, 0x04},
+ {98, 0x04},
+ {110, 0x03},
+ {104, 0x03},
+ {98, 0x03},
+ {110, 0x02},
+ {104, 0x02},
+ {98, 0x02},
+ {110, 0x01},
+ {104, 0x01},
+ {98, 0x01},
+ {110, 0x00},
+ {104, 0x00},
+ {98, 0x00},
+ {93, 0x00},
+ {88, 0x00},
+ {83, 0x00},
+ {78, 0x00},
+ },
+ /* 2.4GHz power gain index table */
+ {
+ {110, 0x3f}, /* highest txpower */
+ {104, 0x3f},
+ {98, 0x3f},
+ {110, 0x3e},
+ {104, 0x3e},
+ {98, 0x3e},
+ {110, 0x3d},
+ {104, 0x3d},
+ {98, 0x3d},
+ {110, 0x3c},
+ {104, 0x3c},
+ {98, 0x3c},
+ {110, 0x3b},
+ {104, 0x3b},
+ {98, 0x3b},
+ {110, 0x3a},
+ {104, 0x3a},
+ {98, 0x3a},
+ {110, 0x39},
+ {104, 0x39},
+ {98, 0x39},
+ {110, 0x38},
+ {104, 0x38},
+ {98, 0x38},
+ {110, 0x37},
+ {104, 0x37},
+ {98, 0x37},
+ {110, 0x36},
+ {104, 0x36},
+ {98, 0x36},
+ {110, 0x35},
+ {104, 0x35},
+ {98, 0x35},
+ {110, 0x34},
+ {104, 0x34},
+ {98, 0x34},
+ {110, 0x33},
+ {104, 0x33},
+ {98, 0x33},
+ {110, 0x32},
+ {104, 0x32},
+ {98, 0x32},
+ {110, 0x31},
+ {104, 0x31},
+ {98, 0x31},
+ {110, 0x30},
+ {104, 0x30},
+ {98, 0x30},
+ {110, 0x6},
+ {104, 0x6},
+ {98, 0x6},
+ {110, 0x5},
+ {104, 0x5},
+ {98, 0x5},
+ {110, 0x4},
+ {104, 0x4},
+ {98, 0x4},
+ {110, 0x3},
+ {104, 0x3},
+ {98, 0x3},
+ {110, 0x2},
+ {104, 0x2},
+ {98, 0x2},
+ {110, 0x1},
+ {104, 0x1},
+ {98, 0x1},
+ {110, 0x0},
+ {104, 0x0},
+ {98, 0x0},
+ {97, 0},
+ {96, 0},
+ {95, 0},
+ {94, 0},
+ {93, 0},
+ {92, 0},
+ {91, 0},
+ {90, 0},
+ {89, 0},
+ {88, 0},
+ {87, 0},
+ {86, 0},
+ {85, 0},
+ {84, 0},
+ {83, 0},
+ {82, 0},
+ {81, 0},
+ {80, 0},
+ {79, 0},
+ {78, 0},
+ {77, 0},
+ {76, 0},
+ {75, 0},
+ {74, 0},
+ {73, 0},
+ {72, 0},
+ {71, 0},
+ {70, 0},
+ {69, 0},
+ {68, 0},
+ {67, 0},
+ {66, 0},
+ {65, 0},
+ {64, 0},
+ {63, 0},
+ {62, 0},
+ {61, 0},
+ {60, 0},
+ {59, 0},
+ }
+};
+
+static int iwl4965_fill_txpower_tbl(struct iwl_priv *priv, u8 band, u16 channel,
+ u8 is_fat, u8 ctrl_chan_high,
+ struct iwl_tx_power_db *tx_power_tbl)
+{
+ u8 saturation_power;
+ s32 target_power;
+ s32 user_target_power;
+ s32 power_limit;
+ s32 current_temp;
+ s32 reg_limit;
+ s32 current_regulatory;
+ s32 txatten_grp = CALIB_CH_GROUP_MAX;
+ int i;
+ int c;
+ const struct iwl_channel_info *ch_info = NULL;
+ struct iwl_eeprom_calib_ch_info ch_eeprom_info;
+ const struct iwl_eeprom_calib_measure *measurement;
+ s16 voltage;
+ s32 init_voltage;
+ s32 voltage_compensation;
+ s32 degrees_per_05db_num;
+ s32 degrees_per_05db_denom;
+ s32 factory_temp;
+ s32 temperature_comp[2];
+ s32 factory_gain_index[2];
+ s32 factory_actual_pwr[2];
+ s32 power_index;
+
+ /* Sanity check requested level (dBm) */
+ if (priv->user_txpower_limit < IWL_TX_POWER_TARGET_POWER_MIN) {
+ IWL_WARNING("Requested user TXPOWER %d below limit.\n",
+ priv->user_txpower_limit);
+ return -EINVAL;
+ }
+ if (priv->user_txpower_limit > IWL_TX_POWER_TARGET_POWER_MAX) {
+ IWL_WARNING("Requested user TXPOWER %d above limit.\n",
+ priv->user_txpower_limit);
+ return -EINVAL;
+ }
+
+ /* user_txpower_limit is in dBm, convert to half-dBm (half-dB units
+ * are used for indexing into txpower table) */
+ user_target_power = 2 * priv->user_txpower_limit;
+
+ /* Get current (RXON) channel, band, width */
+ ch_info =
+ iwl4965_get_channel_txpower_info(priv, priv->phymode, channel);
+
+ IWL_DEBUG_TXPOWER("chan %d band %d is_fat %d\n", channel, band,
+ is_fat);
+
+ if (!ch_info)
+ return -EINVAL;
+
+ /* get txatten group, used to select 1) thermal txpower adjustment
+ * and 2) mimo txpower balance between Tx chains. */
+ txatten_grp = iwl4965_get_tx_atten_grp(channel);
+ if (txatten_grp < 0)
+ return -EINVAL;
+
+ IWL_DEBUG_TXPOWER("channel %d belongs to txatten group %d\n",
+ channel, txatten_grp);
+
+ if (is_fat) {
+ if (ctrl_chan_high)
+ channel -= 2;
+ else
+ channel += 2;
+ }
+
+ /* hardware txpower limits ...
+ * saturation (clipping distortion) txpowers are in half-dBm */
+ if (band)
+ saturation_power = priv->eeprom.calib_info.saturation_power24;
+ else
+ saturation_power = priv->eeprom.calib_info.saturation_power52;
+
+ if (saturation_power < IWL_TX_POWER_SATURATION_MIN ||
+ saturation_power > IWL_TX_POWER_SATURATION_MAX) {
+ if (band)
+ saturation_power = IWL_TX_POWER_DEFAULT_SATURATION_24;
+ else
+ saturation_power = IWL_TX_POWER_DEFAULT_SATURATION_52;
+ }
+
+ /* regulatory txpower limits ... reg_limit values are in half-dBm,
+ * max_power_avg values are in dBm, convert * 2 */
+ if (is_fat)
+ reg_limit = ch_info->fat_max_power_avg * 2;
+ else
+ reg_limit = ch_info->max_power_avg * 2;
+
+ if ((reg_limit < IWL_TX_POWER_REGULATORY_MIN) ||
+ (reg_limit > IWL_TX_POWER_REGULATORY_MAX)) {
+ if (band)
+ reg_limit = IWL_TX_POWER_DEFAULT_REGULATORY_24;
+ else
+ reg_limit = IWL_TX_POWER_DEFAULT_REGULATORY_52;
+ }
+
+ /* Interpolate txpower calibration values for this channel,
+ * based on factory calibration tests on spaced channels. */
+ iwl4965_interpolate_chan(priv, channel, &ch_eeprom_info);
+
+ /* calculate tx gain adjustment based on power supply voltage */
+ voltage = priv->eeprom.calib_info.voltage;
+ init_voltage = (s32)le32_to_cpu(priv->card_alive_init.voltage);
+ voltage_compensation =
+ iwl4965_get_voltage_compensation(voltage, init_voltage);
+
+ IWL_DEBUG_TXPOWER("curr volt %d eeprom volt %d volt comp %d\n",
+ init_voltage,
+ voltage, voltage_compensation);
+
+ /* get current temperature (Celsius) */
+ current_temp = max(priv->temperature, IWL_TX_POWER_TEMPERATURE_MIN);
+ current_temp = min(priv->temperature, IWL_TX_POWER_TEMPERATURE_MAX);
+ current_temp = KELVIN_TO_CELSIUS(current_temp);
+
+ /* select thermal txpower adjustment params, based on channel group
+ * (same frequency group used for mimo txatten adjustment) */
+ degrees_per_05db_num =
+ tx_power_cmp_tble[txatten_grp].degrees_per_05db_a;
+ degrees_per_05db_denom =
+ tx_power_cmp_tble[txatten_grp].degrees_per_05db_a_denom;
+
+ /* get per-chain txpower values from factory measurements */
+ for (c = 0; c < 2; c++) {
+ measurement = &ch_eeprom_info.measurements[c][1];
+
+ /* txgain adjustment (in half-dB steps) based on difference
+ * between factory and current temperature */
+ factory_temp = measurement->temperature;
+ iwl4965_math_div_round((current_temp - factory_temp) *
+ degrees_per_05db_denom,
+ degrees_per_05db_num,
+ &temperature_comp[c]);
+
+ factory_gain_index[c] = measurement->gain_idx;
+ factory_actual_pwr[c] = measurement->actual_pow;
+
+ IWL_DEBUG_TXPOWER("chain = %d\n", c);
+ IWL_DEBUG_TXPOWER("fctry tmp %d, "
+ "curr tmp %d, comp %d steps\n",
+ factory_temp, current_temp,
+ temperature_comp[c]);
+
+ IWL_DEBUG_TXPOWER("fctry idx %d, fctry pwr %d\n",
+ factory_gain_index[c],
+ factory_actual_pwr[c]);
+ }
+
+ /* for each of 33 bit-rates (including 1 for CCK) */
+ for (i = 0; i < POWER_TABLE_NUM_ENTRIES; i++) {
+ u8 is_mimo_rate;
+ union iwl_tx_power_dual_stream tx_power;
+
+ /* for mimo, reduce each chain's txpower by half
+ * (3dB, 6 steps), so total output power is regulatory
+ * compliant. */
+ if (i & 0x8) {
+ current_regulatory = reg_limit -
+ IWL_TX_POWER_MIMO_REGULATORY_COMPENSATION;
+ is_mimo_rate = 1;
+ } else {
+ current_regulatory = reg_limit;
+ is_mimo_rate = 0;
+ }
+
+ /* find txpower limit, either hardware or regulatory */
+ power_limit = saturation_power - back_off_table[i];
+ if (power_limit > current_regulatory)
+ power_limit = current_regulatory;
+
+ /* reduce user's txpower request if necessary
+ * for this rate on this channel */
+ target_power = user_target_power;
+ if (target_power > power_limit)
+ target_power = power_limit;
+
+ IWL_DEBUG_TXPOWER("rate %d sat %d reg %d usr %d tgt %d\n",
+ i, saturation_power - back_off_table[i],
+ current_regulatory, user_target_power,
+ target_power);
+
+ /* for each of 2 Tx chains (radio transmitters) */
+ for (c = 0; c < 2; c++) {
+ s32 atten_value;
+
+ if (is_mimo_rate)
+ atten_value =
+ (s32)le32_to_cpu(priv->card_alive_init.
+ tx_atten[txatten_grp][c]);
+ else
+ atten_value = 0;
+
+ /* calculate index; higher index means lower txpower */
+ power_index = (u8) (factory_gain_index[c] -
+ (target_power -
+ factory_actual_pwr[c]) -
+ temperature_comp[c] -
+ voltage_compensation +
+ atten_value);
+
+/* IWL_DEBUG_TXPOWER("calculated txpower index %d\n",
+ power_index); */
+
+ if (power_index < get_min_power_index(i, band))
+ power_index = get_min_power_index(i, band);
+
+ /* adjust 5 GHz index to support negative indexes */
+ if (!band)
+ power_index += 9;
+
+ /* CCK, rate 32, reduce txpower for CCK */
+ if (i == POWER_TABLE_CCK_ENTRY)
+ power_index +=
+ IWL_TX_POWER_CCK_COMPENSATION_C_STEP;
+
+ /* stay within the table! */
+ if (power_index > 107) {
+ IWL_WARNING("txpower index %d > 107\n",
+ power_index);
+ power_index = 107;
+ }
+ if (power_index < 0) {
+ IWL_WARNING("txpower index %d < 0\n",
+ power_index);
+ power_index = 0;
+ }
+
+ /* fill txpower command for this rate/chain */
+ tx_power.s.radio_tx_gain[c] =
+ gain_table[band][power_index].radio;
+ tx_power.s.dsp_predis_atten[c] =
+ gain_table[band][power_index].dsp;
+
+ IWL_DEBUG_TXPOWER("chain %d mimo %d index %d "
+ "gain 0x%02x dsp %d\n",
+ c, atten_value, power_index,
+ tx_power.s.radio_tx_gain[c],
+ tx_power.s.dsp_predis_atten[c]);
+ }/* for each chain */
+
+ tx_power_tbl->power_tbl[i].dw = cpu_to_le32(tx_power.dw);
+
+ }/* for each rate */
+
+ return 0;
+}
+
+/**
+ * iwl_hw_reg_send_txpower - Configure the TXPOWER level user limit
+ *
+ * Uses the active RXON for channel, band, and characteristics (fat, high)
+ * The power limit is taken from priv->user_txpower_limit.
+ */
+int iwl_hw_reg_send_txpower(struct iwl_priv *priv)
+{
+ struct iwl_txpowertable_cmd cmd = { 0 };
+ int rc = 0;
+ u8 band = 0;
+ u8 is_fat = 0;
+ u8 ctrl_chan_high = 0;
+
+ if (test_bit(STATUS_SCANNING, &priv->status)) {
+ /* If this gets hit a lot, switch it to a BUG() and catch
+ * the stack trace to find out who is calling this during
+ * a scan. */
+ IWL_WARNING("TX Power requested while scanning!\n");
+ return -EAGAIN;
+ }
+
+ band = ((priv->phymode == MODE_IEEE80211B) ||
+ (priv->phymode == MODE_IEEE80211G));
+
+ is_fat = is_fat_channel(priv->active_rxon.flags);
+
+ if (is_fat &&
+ (priv->active_rxon.flags & RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK))
+ ctrl_chan_high = 1;
+
+ cmd.band = band;
+ cmd.channel = priv->active_rxon.channel;
+
+ rc = iwl4965_fill_txpower_tbl(priv, band,
+ le16_to_cpu(priv->active_rxon.channel),
+ is_fat, ctrl_chan_high, &cmd.tx_power);
+ if (rc)
+ return rc;
+
+ rc = iwl_send_cmd_pdu(priv, REPLY_TX_PWR_TABLE_CMD, sizeof(cmd), &cmd);
+ return rc;
+}
+
+int iwl_hw_channel_switch(struct iwl_priv *priv, u16 channel)
+{
+ int rc;
+ u8 band = 0;
+ u8 is_fat = 0;
+ u8 ctrl_chan_high = 0;
+ struct iwl_channel_switch_cmd cmd = { 0 };
+ const struct iwl_channel_info *ch_info;
+
+ band = ((priv->phymode == MODE_IEEE80211B) ||
+ (priv->phymode == MODE_IEEE80211G));
+
+ ch_info = iwl_get_channel_info(priv, priv->phymode, channel);
+
+ is_fat = is_fat_channel(priv->staging_rxon.flags);
+
+ if (is_fat &&
+ (priv->active_rxon.flags & RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK))
+ ctrl_chan_high = 1;
+
+ cmd.band = band;
+ cmd.expect_beacon = 0;
+ cmd.channel = cpu_to_le16(channel);
+ cmd.rxon_flags = priv->active_rxon.flags;
+ cmd.rxon_filter_flags = priv->active_rxon.filter_flags;
+ cmd.switch_time = cpu_to_le32(priv->ucode_beacon_time);
+ if (ch_info)
+ cmd.expect_beacon = is_channel_radar(ch_info);
+ else
+ cmd.expect_beacon = 1;
+
+ rc = iwl4965_fill_txpower_tbl(priv, band, channel, is_fat,
+ ctrl_chan_high, &cmd.tx_power);
+ if (rc) {
+ IWL_DEBUG_11H("error:%d fill txpower_tbl\n", rc);
+ return rc;
+ }
+
+ rc = iwl_send_cmd_pdu(priv, REPLY_CHANNEL_SWITCH, sizeof(cmd), &cmd);
+ return rc;
+}
+
+#define RTS_HCCA_RETRY_LIMIT 3
+#define RTS_DFAULT_RETRY_LIMIT 60
+
+void iwl_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)
+{
+ u8 rate;
+ u8 rts_retry_limit = 0;
+ u8 data_retry_limit = 0;
+ __le32 tx_flags;
+ u16 fc = le16_to_cpu(hdr->frame_control);
+
+ tx_flags = cmd->cmd.tx.tx_flags;
+
+ rate = iwl_rates[ctrl->tx_rate].plcp;
+
+ rts_retry_limit = (is_hcca) ?
+ RTS_HCCA_RETRY_LIMIT : RTS_DFAULT_RETRY_LIMIT;
+
+ 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 ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) {
+ 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;
+ }
+ break;
+ default:
+ break;
+ }
+ }
+
+ cmd->cmd.tx.rts_retry_limit = rts_retry_limit;
+ cmd->cmd.tx.data_retry_limit = data_retry_limit;
+ cmd->cmd.tx.rate_n_flags = iwl_hw_set_rate_n_flags(rate, 0);
+ cmd->cmd.tx.tx_flags = tx_flags;
+}
+
+int iwl_hw_get_rx_read(struct iwl_priv *priv)
+{
+ struct iwl_shared *shared_data = priv->hw_setting.shared_virt;
+
+ return IWL_GET_BITS(*shared_data, rb_closed_stts_rb_num);
+}
+
+int iwl_hw_get_temperature(struct iwl_priv *priv)
+{
+ return priv->temperature;
+}
+
+unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv *priv,
+ struct iwl_frame *frame, u8 rate)
+{
+ struct iwl_tx_beacon_cmd *tx_beacon_cmd;
+ unsigned int frame_size;
+
+ tx_beacon_cmd = &frame->u.beacon;
+ memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
+
+ tx_beacon_cmd->tx.sta_id = IWL4965_BROADCAST_ID;
+ tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
+
+ frame_size = iwl_fill_beacon_frame(priv,
+ tx_beacon_cmd->frame,
+ BROADCAST_ADDR,
+ sizeof(frame->u) - sizeof(*tx_beacon_cmd));
+
+ BUG_ON(frame_size > MAX_MPDU_SIZE);
+ tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
+
+ if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP))
+ tx_beacon_cmd->tx.rate_n_flags =
+ iwl_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK);
+ else
+ tx_beacon_cmd->tx.rate_n_flags =
+ iwl_hw_set_rate_n_flags(rate, 0);
+
+ tx_beacon_cmd->tx.tx_flags = (TX_CMD_FLG_SEQ_CTL_MSK |
+ TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK);
+ return (sizeof(*tx_beacon_cmd) + frame_size);
+}
+
+int iwl_hw_tx_queue_init(struct iwl_priv *priv, struct iwl_tx_queue *txq)
+{
+ int rc;
+ unsigned long flags;
+ int txq_id = txq->q.id;
+
+ spin_lock_irqsave(&priv->lock, flags);
+ rc = iwl_grab_restricted_access(priv);
+ if (rc) {
+ spin_unlock_irqrestore(&priv->lock, flags);
+ return rc;
+ }
+
+ iwl_write_restricted(priv, FH_MEM_CBBC_QUEUE(txq_id),
+ txq->q.dma_addr >> 8);
+ iwl_write_restricted(
+ priv, IWL_FH_TCSR_CHNL_TX_CONFIG_REG(txq_id),
+ IWL_FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE |
+ IWL_FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE_VAL);
+ iwl_release_restricted_access(priv);
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ return 0;
+}
+
+static inline u8 iwl4965_get_dma_hi_address(dma_addr_t addr)
+{
+ return sizeof(addr) > sizeof(u32) ? (addr >> 16) >> 16 : 0;
+}
+
+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);
+
+ 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,
+ iwl4965_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;
+}
+
+void iwl_hw_card_show_info(struct iwl_priv *priv)
+{
+ u16 hw_version = priv->eeprom.board_revision_4965;
+
+ IWL_DEBUG_INFO("4965ABGN HW Version %u.%u.%u\n",
+ ((hw_version >> 8) & 0x0F),
+ ((hw_version >> 8) >> 4), (hw_version & 0x00FF));
+
+ IWL_DEBUG_INFO("4965ABGN PBA Number %.16s\n",
+ priv->eeprom.board_pba_number_4965);
+}
+
+#define IWL_TX_CRC_SIZE 4
+#define IWL_TX_DELIMITER_SIZE 4
+
+int iwl4965_tx_queue_update_wr_ptr(struct iwl_priv *priv,
+ struct iwl_tx_queue *txq, u16 byte_cnt)
+{
+ int len;
+ int txq_id = txq->q.id;
+ struct iwl_shared *shared_data = priv->hw_setting.shared_virt;
+
+ if (txq->need_update == 0)
+ return 0;
+
+ len = byte_cnt + IWL_TX_CRC_SIZE + IWL_TX_DELIMITER_SIZE;
+
+ IWL_SET_BITS16(shared_data->queues_byte_cnt_tbls[txq_id].
+ tfd_offset[txq->q.first_empty], byte_cnt, len);
+
+ if (txq->q.first_empty < IWL4965_MAX_WIN_SIZE)
+ IWL_SET_BITS16(shared_data->queues_byte_cnt_tbls[txq_id].
+ tfd_offset[IWL4965_QUEUE_SIZE + txq->q.first_empty],
+ byte_cnt, len);
+
+ return 0;
+}
+
+/* Set up Rx receiver/antenna/chain usage in "staging" RXON image.
+ * This should not be used for scan command ... it puts data in wrong place. */
+void iwl4965_set_rxon_chain(struct iwl_priv *priv)
+{
+ u8 is_single = is_single_stream(priv);
+ u8 idle_state, rx_state;
+
+ priv->staging_rxon.rx_chain = 0;
+ rx_state = idle_state = 3;
+
+ /* Tell uCode which antennas are actually connected.
+ * Before first association, we assume all antennas are connected.
+ * Just after first association, iwl4965_noise_calibration()
+ * checks which antennas actually *are* connected. */
+ priv->staging_rxon.rx_chain |=
+ cpu_to_le16(priv->valid_antenna << RXON_RX_CHAIN_VALID_POS);
+
+ /* How many receivers should we use? */
+ iwl4965_get_rx_chain_counter(priv, &idle_state, &rx_state);
+ priv->staging_rxon.rx_chain |=
+ cpu_to_le16(rx_state << RXON_RX_CHAIN_MIMO_CNT_POS);
+ priv->staging_rxon.rx_chain |=
+ cpu_to_le16(idle_state << RXON_RX_CHAIN_CNT_POS);
+
+ if (!is_single && (rx_state >= 2) &&
+ !test_bit(STATUS_POWER_PMI, &priv->status))
+ priv->staging_rxon.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
+ else
+ priv->staging_rxon.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
+
+ IWL_DEBUG_ASSOC("rx chain %X\n", priv->staging_rxon.rx_chain);
+}
+
+#ifdef CONFIG_IWLWIFI_HT
+#ifdef CONFIG_IWLWIFI_HT_AGG
+/*
+ get the traffic load value for tid
+*/
+static u32 iwl4965_tl_get_load(struct iwl_priv *priv, u8 tid)
+{
+ u32 load = 0;
+ u32 current_time = jiffies_to_msecs(jiffies);
+ u32 time_diff;
+ s32 index;
+ unsigned long flags;
+ struct iwl_traffic_load *tid_ptr = NULL;
+
+ if (tid >= TID_MAX_LOAD_COUNT)
+ return 0;
+
+ tid_ptr = &(priv->lq_mngr.agg_ctrl.traffic_load[tid]);
+
+ current_time -= current_time % TID_ROUND_VALUE;
+
+ spin_lock_irqsave(&priv->lq_mngr.lock, flags);
+ if (!(tid_ptr->queue_count))
+ goto out;
+
+ time_diff = TIME_WRAP_AROUND(tid_ptr->time_stamp, current_time);
+ index = time_diff / TID_QUEUE_CELL_SPACING;
+
+ if (index >= TID_QUEUE_MAX_SIZE) {
+ u32 oldest_time = current_time - TID_MAX_TIME_DIFF;
+
+ while (tid_ptr->queue_count &&
+ (tid_ptr->time_stamp < oldest_time)) {
+ tid_ptr->total -= tid_ptr->packet_count[tid_ptr->head];
+ tid_ptr->packet_count[tid_ptr->head] = 0;
+ tid_ptr->time_stamp += TID_QUEUE_CELL_SPACING;
+ tid_ptr->queue_count--;
+ tid_ptr->head++;
+ if (tid_ptr->head >= TID_QUEUE_MAX_SIZE)
+ tid_ptr->head = 0;
+ }
+ }
+ load = tid_ptr->total;
+
+ out:
+ spin_unlock_irqrestore(&priv->lq_mngr.lock, flags);
+ return load;
+}
+
+/*
+ increment traffic load value for tid and also remove
+ any old values if passed the certian time period
+*/
+static void iwl4965_tl_add_packet(struct iwl_priv *priv, u8 tid)
+{
+ u32 current_time = jiffies_to_msecs(jiffies);
+ u32 time_diff;
+ s32 index;
+ unsigned long flags;
+ struct iwl_traffic_load *tid_ptr = NULL;
+
+ if (tid >= TID_MAX_LOAD_COUNT)
+ return;
+
+ tid_ptr = &(priv->lq_mngr.agg_ctrl.traffic_load[tid]);
+
+ current_time -= current_time % TID_ROUND_VALUE;
+
+ spin_lock_irqsave(&priv->lq_mngr.lock, flags);
+ if (!(tid_ptr->queue_count)) {
+ tid_ptr->total = 1;
+ tid_ptr->time_stamp = current_time;
+ tid_ptr->queue_count = 1;
+ tid_ptr->head = 0;
+ tid_ptr->packet_count[0] = 1;
+ goto out;
+ }
+
+ time_diff = TIME_WRAP_AROUND(tid_ptr->time_stamp, current_time);
+ index = time_diff / TID_QUEUE_CELL_SPACING;
+
+ if (index >= TID_QUEUE_MAX_SIZE) {
+ u32 oldest_time = current_time - TID_MAX_TIME_DIFF;
+
+ while (tid_ptr->queue_count &&
+ (tid_ptr->time_stamp < oldest_time)) {
+ tid_ptr->total -= tid_ptr->packet_count[tid_ptr->head];
+ tid_ptr->packet_count[tid_ptr->head] = 0;
+ tid_ptr->time_stamp += TID_QUEUE_CELL_SPACING;
+ tid_ptr->queue_count--;
+ tid_ptr->head++;
+ if (tid_ptr->head >= TID_QUEUE_MAX_SIZE)
+ tid_ptr->head = 0;
+ }
+ }
+
+ index = (tid_ptr->head + index) % TID_QUEUE_MAX_SIZE;
+ tid_ptr->packet_count[index] = tid_ptr->packet_count[index] + 1;
+ tid_ptr->total = tid_ptr->total + 1;
+
+ if ((index + 1) > tid_ptr->queue_count)
+ tid_ptr->queue_count = index + 1;
+ out:
+ spin_unlock_irqrestore(&priv->lq_mngr.lock, flags);
+
+}
+
+#define MMAC_SCHED_MAX_NUMBER_OF_HT_BACK_FLOWS 7
+enum HT_STATUS {
+ BA_STATUS_FAILURE = 0,
+ BA_STATUS_INITIATOR_DELBA,
+ BA_STATUS_RECIPIENT_DELBA,
+ BA_STATUS_RENEW_ADDBA_REQUEST,
+ BA_STATUS_ACTIVE,
+};
+
+static u8 iwl4964_tl_ba_avail(struct iwl_priv *priv)
+{
+ int i;
+ struct iwl_lq_mngr *lq;
+ u8 count = 0;
+ u16 msk;
+
+ lq = (struct iwl_lq_mngr *)&(priv->lq_mngr);
+ for (i = 0; i < TID_MAX_LOAD_COUNT ; i++) {
+ msk = 1 << i;
+ if ((lq->agg_ctrl.granted_ba & msk) ||
+ (lq->agg_ctrl.wait_for_agg_status & msk))
+ count++;
+ }
+
+ if (count < MMAC_SCHED_MAX_NUMBER_OF_HT_BACK_FLOWS)
+ return 1;
+
+ return 0;
+}
+
+static void iwl4965_ba_status(struct iwl_priv *priv,
+ u8 tid, enum HT_STATUS status);
+
+static int iwl4965_perform_addba(struct iwl_priv *priv, u8 tid, u32 length,
+ u32 ba_timeout)
+{
+ int rc;
+
+ rc = ieee80211_start_BA_session(priv->hw, priv->bssid, tid);
+ if (rc)
+ iwl4965_ba_status(priv, tid, BA_STATUS_FAILURE);
+
+ return rc;
+}
+
+static int iwl4965_perform_delba(struct iwl_priv *priv, u8 tid)
+{
+ int rc;
+
+ rc = ieee80211_stop_BA_session(priv->hw, priv->bssid, tid);
+ if (rc)
+ iwl4965_ba_status(priv, tid, BA_STATUS_FAILURE);
+
+ return rc;
+}
+
+static void iwl4965_turn_on_agg_for_tid(struct iwl_priv *priv,
+ struct iwl_lq_mngr *lq,
+ u8 auto_agg, u8 tid)
+{
+ u32 tid_msk = (1 << tid);
+ unsigned long flags;
+
+ spin_lock_irqsave(&priv->lq_mngr.lock, flags);
+/*
+ if ((auto_agg) && (!lq->enable_counter)){
+ lq->agg_ctrl.next_retry = 0;
+ lq->agg_ctrl.tid_retry = 0;
+ spin_unlock_irqrestore(&priv->lq_mngr.lock, flags);
+ return;
+ }
+*/
+ if (!(lq->agg_ctrl.granted_ba & tid_msk) &&
+ (lq->agg_ctrl.requested_ba & tid_msk)) {
+ u8 available_queues;
+ u32 load;
+
+ spin_unlock_irqrestore(&priv->lq_mngr.lock, flags);
+ available_queues = iwl4964_tl_ba_avail(priv);
+ load = iwl4965_tl_get_load(priv, tid);
+
+ spin_lock_irqsave(&priv->lq_mngr.lock, flags);
+ if (!available_queues) {
+ if (auto_agg)
+ lq->agg_ctrl.tid_retry |= tid_msk;
+ else {
+ lq->agg_ctrl.requested_ba &= ~tid_msk;
+ lq->agg_ctrl.wait_for_agg_status &= ~tid_msk;
+ }
+ } else if ((auto_agg) &&
+ ((load <= lq->agg_ctrl.tid_traffic_load_threshold) ||
+ ((lq->agg_ctrl.wait_for_agg_status & tid_msk))))
+ lq->agg_ctrl.tid_retry |= tid_msk;
+ else {
+ lq->agg_ctrl.wait_for_agg_status |= tid_msk;
+ spin_unlock_irqrestore(&priv->lq_mngr.lock, flags);
+ iwl4965_perform_addba(priv, tid, 0x40,
+ lq->agg_ctrl.ba_timeout);
+ spin_lock_irqsave(&priv->lq_mngr.lock, flags);
+ }
+ }
+ spin_unlock_irqrestore(&priv->lq_mngr.lock, flags);
+}
+
+static void iwl4965_turn_on_agg(struct iwl_priv *priv, u8 tid)
+{
+ struct iwl_lq_mngr *lq;
+ unsigned long flags;
+
+ lq = (struct iwl_lq_mngr *)&(priv->lq_mngr);
+
+ if ((tid < TID_MAX_LOAD_COUNT))
+ iwl4965_turn_on_agg_for_tid(priv, lq, lq->agg_ctrl.auto_agg,
+ tid);
+ else if (tid == TID_ALL_SPECIFIED) {
+ if (lq->agg_ctrl.requested_ba) {
+ for (tid = 0; tid < TID_MAX_LOAD_COUNT; tid++)
+ iwl4965_turn_on_agg_for_tid(priv, lq,
+ lq->agg_ctrl.auto_agg, tid);
+ } else {
+ spin_lock_irqsave(&priv->lq_mngr.lock, flags);
+ lq->agg_ctrl.tid_retry = 0;
+ lq->agg_ctrl.next_retry = 0;
+ spin_unlock_irqrestore(&priv->lq_mngr.lock, flags);
+ }
+ }
+
+}
+
+void iwl4965_turn_off_agg(struct iwl_priv *priv, u8 tid)
+{
+ u32 tid_msk;
+ struct iwl_lq_mngr *lq;
+ unsigned long flags;
+
+ lq = (struct iwl_lq_mngr *)&(priv->lq_mngr);
+
+ if ((tid < TID_MAX_LOAD_COUNT)) {
+ tid_msk = 1 << tid;
+ spin_lock_irqsave(&priv->lq_mngr.lock, flags);
+ lq->agg_ctrl.wait_for_agg_status |= tid_msk;
+ lq->agg_ctrl.requested_ba &= ~tid_msk;
+ spin_unlock_irqrestore(&priv->lq_mngr.lock, flags);
+ iwl4965_perform_delba(priv, tid);
+ } else if (tid == TID_ALL_SPECIFIED) {
+ spin_lock_irqsave(&priv->lq_mngr.lock, flags);
+ for (tid = 0; tid < TID_MAX_LOAD_COUNT; tid++) {
+ tid_msk = 1 << tid;
+ lq->agg_ctrl.wait_for_agg_status |= tid_msk;
+ spin_unlock_irqrestore(&priv->lq_mngr.lock, flags);
+ iwl4965_perform_delba(priv, tid);
+ spin_lock_irqsave(&priv->lq_mngr.lock, flags);
+ }
+ lq->agg_ctrl.requested_ba = 0;
+ spin_unlock_irqrestore(&priv->lq_mngr.lock, flags);
+ }
+}
+
+static void iwl4965_ba_status(struct iwl_priv *priv,
+ u8 tid, enum HT_STATUS status)
+{
+ struct iwl_lq_mngr *lq;
+ u32 tid_msk = (1 << tid);
+ unsigned long flags;
+
+ lq = (struct iwl_lq_mngr *)&(priv->lq_mngr);
+
+ if ((tid >= TID_MAX_LOAD_COUNT))
+ goto out;
+
+ spin_lock_irqsave(&priv->lq_mngr.lock, flags);
+ switch (status) {
+ case BA_STATUS_ACTIVE:
+ if (!(lq->agg_ctrl.granted_ba & tid_msk))
+ lq->agg_ctrl.granted_ba |= tid_msk;
+ break;
+ default:
+ if ((lq->agg_ctrl.granted_ba & tid_msk))
+ lq->agg_ctrl.granted_ba &= ~tid_msk;
+ break;
+ }
+
+ lq->agg_ctrl.wait_for_agg_status &= ~tid_msk;
+ if (status != BA_STATUS_ACTIVE) {
+ if (lq->agg_ctrl.auto_agg) {
+ lq->agg_ctrl.tid_retry |= tid_msk;
+ lq->agg_ctrl.next_retry =
+ jiffies + msecs_to_jiffies(500);
+ } else
+ lq->agg_ctrl.requested_ba &= ~tid_msk;
+ }
+ spin_unlock_irqrestore(&priv->lq_mngr.lock, flags);
+ out:
+ return;
+}
+
+static void iwl4965_bg_agg_work(struct work_struct *work)
+{
+ struct iwl_priv *priv = container_of(work, struct iwl_priv,
+ agg_work);
+
+ u32 tid;
+ u32 retry_tid;
+ u32 tid_msk;
+ unsigned long flags;
+ struct iwl_lq_mngr *lq = (struct iwl_lq_mngr *)&(priv->lq_mngr);
+
+ spin_lock_irqsave(&priv->lq_mngr.lock, flags);
+ retry_tid = lq->agg_ctrl.tid_retry;
+ lq->agg_ctrl.tid_retry = 0;
+ spin_unlock_irqrestore(&priv->lq_mngr.lock, flags);
+
+ if (retry_tid == TID_ALL_SPECIFIED)
+ iwl4965_turn_on_agg(priv, TID_ALL_SPECIFIED);
+ else {
+ for (tid = 0; tid < TID_MAX_LOAD_COUNT; tid++) {
+ tid_msk = (1 << tid);
+ if (retry_tid & tid_msk)
+ iwl4965_turn_on_agg(priv, tid);
+ }
+ }
+
+ spin_lock_irqsave(&priv->lq_mngr.lock, flags);
+ if (lq->agg_ctrl.tid_retry)
+ lq->agg_ctrl.next_retry = jiffies + msecs_to_jiffies(500);
+ spin_unlock_irqrestore(&priv->lq_mngr.lock, flags);
+ return;
+}
+#endif /*CONFIG_IWLWIFI_HT_AGG */
+#endif /* CONFIG_IWLWIFI_HT */
+
+int iwl4965_tx_cmd(struct iwl_priv *priv, struct iwl_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)
+{
+ struct iwl_tx_cmd cmd;
+ struct iwl_tx_cmd *tx = (struct iwl_tx_cmd *)&out_cmd->cmd.payload[0];
+ 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_IWLWIFI_HT
+#ifdef CONFIG_IWLWIFI_HT_AGG
+ __le16 *qc;
+#endif /*CONFIG_IWLWIFI_HT_AGG */
+#endif /* CONFIG_IWLWIFI_HT */
+
+ 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;
+
+ memcpy(&cmd, &(out_cmd->cmd.tx), sizeof(struct iwl_tx_cmd));
+ memset(tx, 0, sizeof(struct iwl_tx_cmd));
+ memcpy(tx->hdr, hdr, hdr_len);
+
+ tx->len = cmd.len;
+ tx->driver_txop = cmd.driver_txop;
+ tx->stop_time.life_time = cmd.stop_time.life_time;
+ tx->tx_flags = cmd.tx_flags;
+ tx->sta_id = cmd.sta_id;
+ tx->tid_tspec = cmd.tid_tspec;
+ tx->timeout.pm_frame_timeout = cmd.timeout.pm_frame_timeout;
+ tx->next_frame_len = cmd.next_frame_len;
+
+ tx->sec_ctl = cmd.sec_ctl;
+ memcpy(&(tx->key[0]), &(cmd.key[0]), 16);
+ tx->tx_flags = cmd.tx_flags;
+
+ tx->rts_retry_limit = cmd.rts_retry_limit;
+ tx->data_retry_limit = cmd.data_retry_limit;
+
+ scratch_phys = txcmd_phys + sizeof(struct iwl_cmd_header) +
+ offsetof(struct iwl_tx_cmd, scratch);
+ tx->dram_lsb_ptr = cpu_to_le32(scratch_phys);
+ tx->dram_msb_ptr = iwl4965_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 = iwl_hw_set_rate_n_flags(iwl_rates[rate_index].plcp,
+ rate_flags);
+
+ if (ieee80211_is_probe_request(fc))
+ tx->tx_flags |= TX_CMD_FLG_TSF_MSK;
+ else if (ieee80211_is_back_request(fc))
+ tx->tx_flags |= TX_CMD_FLG_ACK_MSK |
+ TX_CMD_FLG_IMM_BA_RSP_MASK;
+#ifdef CONFIG_IWLWIFI_HT
+#ifdef CONFIG_IWLWIFI_HT_AGG
+ qc = ieee80211_get_qos_ctrl(hdr);
+ if (qc &&
+ (priv->iw_mode != IEEE80211_IF_TYPE_IBSS)) {
+ u8 tid = 0;
+ tid = (u8) (le16_to_cpu(*qc) & 0xF);
+ if (tid < TID_MAX_LOAD_COUNT)
+ iwl4965_tl_add_packet(priv, tid);
+ }
+
+ if (priv->lq_mngr.agg_ctrl.next_retry &&
+ (time_after(priv->lq_mngr.agg_ctrl.next_retry, jiffies))) {
+ unsigned long flags;
+
+ spin_lock_irqsave(&priv->lq_mngr.lock, flags);
+ priv->lq_mngr.agg_ctrl.next_retry = 0;
+ spin_unlock_irqrestore(&priv->lq_mngr.lock, flags);
+ schedule_work(&priv->agg_work);
+ }
+#endif
+#endif
+ return 0;
+}
+
+/**
+ * sign_extend - Sign extend a value using specified bit as sign-bit
+ *
+ * Example: sign_extend(9, 3) would return -7 as bit3 of 1001b is 1
+ * and bit0..2 is 001b which when sign extended to 1111111111111001b is -7.
+ *
+ * @param oper value to sign extend
+ * @param index 0 based bit index (0<=index<32) to sign bit
+ */
+static s32 sign_extend(u32 oper, int index)
+{
+ u8 shift = 31 - index;
+
+ return (s32)(oper << shift) >> shift;
+}
+
+/**
+ * iwl4965_get_temperature - return the calibrated temperature (in Kelvin)
+ * @statistics: Provides the temperature reading from the uCode
+ *
+ * A return of <0 indicates bogus data in the statistics
+ */
+int iwl4965_get_temperature(const struct iwl_priv *priv)
+{
+ s32 temperature;
+ s32 vt;
+ s32 R1, R2, R3;
+ u32 R4;
+
+ if (test_bit(STATUS_TEMPERATURE, &priv->status) &&
+ (priv->statistics.flag & STATISTICS_REPLY_FLG_FAT_MODE_MSK)) {
+ IWL_DEBUG_TEMP("Running FAT temperature calibration\n");
+ R1 = (s32)le32_to_cpu(priv->card_alive_init.therm_r1[1]);
+ R2 = (s32)le32_to_cpu(priv->card_alive_init.therm_r2[1]);
+ R3 = (s32)le32_to_cpu(priv->card_alive_init.therm_r3[1]);
+ R4 = le32_to_cpu(priv->card_alive_init.therm_r4[1]);
+ } else {
+ IWL_DEBUG_TEMP("Running temperature calibration\n");
+ R1 = (s32)le32_to_cpu(priv->card_alive_init.therm_r1[0]);
+ R2 = (s32)le32_to_cpu(priv->card_alive_init.therm_r2[0]);
+ R3 = (s32)le32_to_cpu(priv->card_alive_init.therm_r3[0]);
+ R4 = le32_to_cpu(priv->card_alive_init.therm_r4[0]);
+ }
+
+ /*
+ * Temperature is only 23 bits so sign extend out to 32
+ *
+ * NOTE If we haven't received a statistics notification yet
+ * with an updated temperature, use R4 provided to us in the
+ * ALIVE response. */
+ if (!test_bit(STATUS_TEMPERATURE, &priv->status))
+ vt = sign_extend(R4, 23);
+ else
+ vt = sign_extend(
+ le32_to_cpu(priv->statistics.general.temperature), 23);
+
+ IWL_DEBUG_TEMP("Calib values R[1-3]: %d %d %d R4: %d\n",
+ R1, R2, R3, vt);
+
+ if (R3 == R1) {
+ IWL_ERROR("Calibration conflict R1 == R3\n");
+ return -1;
+ }
+
+ /* Calculate temperature in degrees Kelvin, adjust by 97%.
+ * Add offset to center the adjustment around 0 degrees Centigrade. */
+ temperature = TEMPERATURE_CALIB_A_VAL * (vt - R2);
+ temperature /= (R3 - R1);
+ temperature = (temperature * 97) / 100 +
+ TEMPERATURE_CALIB_KELVIN_OFFSET;
+
+ IWL_DEBUG_TEMP("Calibrated temperature: %dK, %dC\n", temperature,
+ KELVIN_TO_CELSIUS(temperature));
+
+ return temperature;
+}
+
+/* Adjust Txpower only if temperature variance is greater than threshold. */
+#define IWL_TEMPERATURE_THRESHOLD 3
+
+/**
+ * iwl4965_is_temp_calib_needed - determines if new calibration is needed
+ *
+ * If the temperature changed has changed sufficiently, then a recalibration
+ * is needed.
+ *
+ * Assumes caller will replace priv->last_temperature once calibration
+ * executed.
+ */
+static int iwl4965_is_temp_calib_needed(struct iwl_priv *priv)
+{
+ int temp_diff;
+
+ if (!test_bit(STATUS_STATISTICS, &priv->status)) {
+ IWL_DEBUG_TEMP("Temperature not updated -- no statistics.\n");
+ return 0;
+ }
+
+ temp_diff = priv->temperature - priv->last_temperature;
+
+ /* get absolute value */
+ if (temp_diff < 0) {
+ IWL_DEBUG_POWER("Getting cooler, delta %d, \n", temp_diff);
+ temp_diff = -temp_diff;
+ } else if (temp_diff == 0)
+ IWL_DEBUG_POWER("Same temp, \n");
+ else
+ IWL_DEBUG_POWER("Getting warmer, delta %d, \n", temp_diff);
+
+ if (temp_diff < IWL_TEMPERATURE_THRESHOLD) {
+ IWL_DEBUG_POWER("Thermal txpower calib not needed\n");
+ return 0;
+ }
+
+ IWL_DEBUG_POWER("Thermal txpower calib needed\n");
+
+ return 1;
+}
+
+/* Calculate noise level, based on measurements during network silence just
+ * before arriving beacon. This measurement can be done only if we know
+ * exactly when to expect beacons, therefore only when we're associated. */
+static void iwl4965_rx_calc_noise(struct iwl_priv *priv)
+{
+ struct statistics_rx_non_phy *rx_info
+ = &(priv->statistics.rx.general);
+ int num_active_rx = 0;
+ int total_silence = 0;
+ int bcn_silence_a =
+ le32_to_cpu(rx_info->beacon_silence_rssi_a) & IN_BAND_FILTER;
+ int bcn_silence_b =
+ le32_to_cpu(rx_info->beacon_silence_rssi_b) & IN_BAND_FILTER;
+ int bcn_silence_c =
+ le32_to_cpu(rx_info->beacon_silence_rssi_c) & IN_BAND_FILTER;
+
+ if (bcn_silence_a) {
+ total_silence += bcn_silence_a;
+ num_active_rx++;
+ }
+ if (bcn_silence_b) {
+ total_silence += bcn_silence_b;
+ num_active_rx++;
+ }
+ if (bcn_silence_c) {
+ total_silence += bcn_silence_c;
+ num_active_rx++;
+ }
+
+ /* Average among active antennas */
+ if (num_active_rx)
+ priv->last_rx_noise = (total_silence / num_active_rx) - 107;
+ else
+ priv->last_rx_noise = IWL_NOISE_MEAS_NOT_AVAILABLE;
+
+ IWL_DEBUG_CALIB("inband silence a %u, b %u, c %u, dBm %d\n",
+ bcn_silence_a, bcn_silence_b, bcn_silence_c,
+ priv->last_rx_noise);
+}
+
+void iwl_hw_rx_statistics(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
+{
+ struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
+ int change;
+ s32 temp;
+
+ IWL_DEBUG_RX("Statistics notification received (%d vs %d).\n",
+ (int)sizeof(priv->statistics), pkt->len);
+
+ change = ((priv->statistics.general.temperature !=
+ pkt->u.stats.general.temperature) ||
+ ((priv->statistics.flag &
+ STATISTICS_REPLY_FLG_FAT_MODE_MSK) !=
+ (pkt->u.stats.flag & STATISTICS_REPLY_FLG_FAT_MODE_MSK)));
+
+ memcpy(&priv->statistics, &pkt->u.stats, sizeof(priv->statistics));
+
+ set_bit(STATUS_STATISTICS, &priv->status);
+
+ /* Reschedule the statistics timer to occur in
+ * REG_RECALIB_PERIOD seconds to ensure we get a
+ * thermal update even if the uCode doesn't give
+ * us one */
+ mod_timer(&priv->statistics_periodic, jiffies +
+ msecs_to_jiffies(REG_RECALIB_PERIOD * 1000));
+
+ if (unlikely(!test_bit(STATUS_SCANNING, &priv->status)) &&
+ (pkt->hdr.cmd == STATISTICS_NOTIFICATION)) {
+ iwl4965_rx_calc_noise(priv);
+#ifdef CONFIG_IWLWIFI_SENSITIVITY
+ queue_work(priv->workqueue, &priv->sensitivity_work);
+#endif
+ }
+
+ /* If the hardware hasn't reported a change in
+ * temperature then don't bother computing a
+ * calibrated temperature value */
+ if (!change)
+ return;
+
+ temp = iwl4965_get_temperature(priv);
+ if (temp < 0)
+ return;
+
+ if (priv->temperature != temp) {
+ if (priv->temperature)
+ IWL_DEBUG_TEMP("Temperature changed "
+ "from %dC to %dC\n",
+ KELVIN_TO_CELSIUS(priv->temperature),
+ KELVIN_TO_CELSIUS(temp));
+ else
+ IWL_DEBUG_TEMP("Temperature "
+ "initialized to %dC\n",
+ KELVIN_TO_CELSIUS(temp));
+ }
+
+ priv->temperature = temp;
+ set_bit(STATUS_TEMPERATURE, &priv->status);
+
+ if (unlikely(!test_bit(STATUS_SCANNING, &priv->status)) &&
+ iwl4965_is_temp_calib_needed(priv))
+ queue_work(priv->workqueue, &priv->txpower_work);
+}
+
+static void iwl4965_handle_data_packet(struct iwl_priv *priv, int is_data,
+ int include_phy,
+ struct iwl_rx_mem_buffer *rxb,
+ struct ieee80211_rx_status *stats)
+{
+ struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
+ struct iwl4965_rx_phy_res *rx_start = (include_phy) ?
+ (struct iwl4965_rx_phy_res *)&(pkt->u.raw[0]) : NULL;
+ struct ieee80211_hdr *hdr;
+ u16 len;
+ __le32 *rx_end;
+ unsigned int skblen;
+ u32 ampdu_status;
+
+ if (!include_phy && priv->last_phy_res[0])
+ rx_start = (struct iwl4965_rx_phy_res *)&priv->last_phy_res[1];
+
+ if (!rx_start) {
+ IWL_ERROR("MPDU frame without a PHY data\n");
+ return;
+ }
+ if (include_phy) {
+ hdr = (struct ieee80211_hdr *)((u8 *) & rx_start[1] +
+ rx_start->cfg_phy_cnt);
+
+ len = le16_to_cpu(rx_start->byte_count);
+
+ rx_end = (__le32 *) ((u8 *) & pkt->u.raw[0] +
+ sizeof(struct iwl4965_rx_phy_res) +
+ rx_start->cfg_phy_cnt + len);
+
+ } else {
+ struct iwl4965_rx_mpdu_res_start *amsdu =
+ (struct iwl4965_rx_mpdu_res_start *)pkt->u.raw;
+
+ hdr = (struct ieee80211_hdr *)(pkt->u.raw +
+ sizeof(struct iwl4965_rx_mpdu_res_start));
+ len = le16_to_cpu(amsdu->byte_count);
+ rx_start->byte_count = amsdu->byte_count;
+ rx_end = (__le32 *) (((u8 *) hdr) + len);
+ }
+ if (len > 2342 || len < 16) {
+ IWL_DEBUG_DROP("byte count out of range [16,2342]"
+ " : %d\n", len);
+ return;
+ }
+
+ ampdu_status = le32_to_cpu(*rx_end);
+ skblen = ((u8 *) rx_end - (u8 *) & pkt->u.raw[0]) + sizeof(u32);
+
+ /* start from MAC */
+ skb_reserve(rxb->skb, (void *)hdr - (void *)pkt);
+ skb_put(rxb->skb, len); /* end where data ends */
+
+ /* We only process data packets if the interface is open */
+ if (unlikely(!priv->is_open)) {
+ IWL_DEBUG_DROP_LIMIT
+ ("Dropping packet while interface is not open.\n");
+ return;
+ }
+
+ if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
+ if (iwl_param_hwcrypto)
+ iwl_set_decrypted_flag(priv, rxb->skb,
+ ampdu_status, stats);
+ iwl_handle_data_packet_monitor(priv, rxb, hdr, len, stats, 0);
+ return;
+ }
+
+ stats->flag = 0;
+ hdr = (struct ieee80211_hdr *)rxb->skb->data;
+
+ if (iwl_param_hwcrypto)
+ iwl_set_decrypted_flag(priv, rxb->skb, ampdu_status, stats);
+
+ ieee80211_rx_irqsafe(priv->hw, rxb->skb, stats);
+ priv->alloc_rxb_skb--;
+ rxb->skb = NULL;
+#ifdef LED
+ priv->led_packets += len;
+ iwl_setup_activity_timer(priv);
+#endif
+}
+
+/* Calc max signal level (dBm) among 3 possible receivers */
+static int iwl4965_calc_rssi(struct iwl4965_rx_phy_res *rx_resp)
+{
+ /* data from PHY/DSP regarding signal strength, etc.,
+ * contents are always there, not configurable by host. */
+ struct iwl4965_rx_non_cfg_phy *ncphy =
+ (struct iwl4965_rx_non_cfg_phy *)rx_resp->non_cfg_phy;
+ u32 agc = (le16_to_cpu(ncphy->agc_info) & IWL_AGC_DB_MASK)
+ >> IWL_AGC_DB_POS;
+
+ u32 valid_antennae =
+ (le16_to_cpu(rx_resp->phy_flags) & RX_PHY_FLAGS_ANTENNAE_MASK)
+ >> RX_PHY_FLAGS_ANTENNAE_OFFSET;
+ u8 max_rssi = 0;
+ u32 i;
+
+ /* 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. */
+ for (i = 0; i < 3; i++)
+ if (valid_antennae & (1 << i))
+ max_rssi = max(ncphy->rssi_info[i << 1], max_rssi);
+
+ IWL_DEBUG_STATS("Rssi In A %d B %d C %d Max %d AGC dB %d\n",
+ ncphy->rssi_info[0], ncphy->rssi_info[2], ncphy->rssi_info[4],
+ 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);
+}
+
+#ifdef CONFIG_IWLWIFI_HT
+
+/* Parsed Information Elements */
+struct ieee802_11_elems {
+ u8 *ds_params;
+ u8 ds_params_len;
+ u8 *tim;
+ u8 tim_len;
+ u8 *ibss_params;
+ u8 ibss_params_len;
+ u8 *erp_info;
+ u8 erp_info_len;
+ u8 *ht_cap_param;
+ u8 ht_cap_param_len;
+ u8 *ht_extra_param;
+ u8 ht_extra_param_len;
+};
+
+static int parse_elems(u8 *start, size_t len, struct ieee802_11_elems *elems)
+{
+ size_t left = len;
+ u8 *pos = start;
+ int unknown = 0;
+
+ memset(elems, 0, sizeof(*elems));
+
+ while (left >= 2) {
+ u8 id, elen;
+
+ id = *pos++;
+ elen = *pos++;
+ left -= 2;
+
+ if (elen > left)
+ return -1;
+
+ switch (id) {
+ case WLAN_EID_DS_PARAMS:
+ elems->ds_params = pos;
+ elems->ds_params_len = elen;
+ break;
+ case WLAN_EID_TIM:
+ elems->tim = pos;
+ elems->tim_len = elen;
+ break;
+ case WLAN_EID_IBSS_PARAMS:
+ elems->ibss_params = pos;
+ elems->ibss_params_len = elen;
+ break;
+ case WLAN_EID_ERP_INFO:
+ elems->erp_info = pos;
+ elems->erp_info_len = elen;
+ break;
+ case WLAN_EID_HT_CAPABILITY:
+ elems->ht_cap_param = pos;
+ elems->ht_cap_param_len = elen;
+ break;
+ case WLAN_EID_HT_EXTRA_INFO:
+ elems->ht_extra_param = pos;
+ elems->ht_extra_param_len = elen;
+ break;
+ default:
+ unknown++;
+ break;
+ }
+
+ left -= elen;
+ pos += elen;
+ }
+
+ return 0;
+}
+#endif /* CONFIG_IWLWIFI_HT */
+
+static void iwl4965_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&priv->sta_lock, flags);
+ priv->stations[sta_id].sta.station_flags &= ~STA_FLG_PWR_SAVE_MSK;
+ priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK;
+ priv->stations[sta_id].sta.sta.modify_mask = 0;
+ priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
+ spin_unlock_irqrestore(&priv->sta_lock, flags);
+
+ iwl_send_add_station(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
+}
+
+static void iwl4965_update_ps_mode(struct iwl_priv *priv, u16 ps_bit, u8 *addr)
+{
+ /* FIXME: need locking over ps_status ??? */
+ u8 sta_id = iwl_hw_find_station(priv, addr);
+
+ if (sta_id != IWL_INVALID_STATION) {
+ u8 sta_awake = priv->stations[sta_id].
+ ps_status == STA_PS_STATUS_WAKE;
+
+ if (sta_awake && ps_bit)
+ priv->stations[sta_id].ps_status = STA_PS_STATUS_SLEEP;
+ else if (!sta_awake && !ps_bit) {
+ iwl4965_sta_modify_ps_wake(priv, sta_id);
+ priv->stations[sta_id].ps_status = STA_PS_STATUS_WAKE;
+ }
+ }
+}
+
+/* Called for REPLY_4965_RX (legacy ABG frames), or
+ * REPLY_RX_MPDU_CMD (HT high-throughput N frames). */
+static void iwl4965_rx_reply_rx(struct iwl_priv *priv,
+ struct iwl_rx_mem_buffer *rxb)
+{
+ struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
+ /* Use phy data (Rx signal strength, etc.) contained within
+ * this rx packet for legacy frames,
+ * or phy data cached from REPLY_RX_PHY_CMD for HT frames. */
+ int include_phy = (pkt->hdr.cmd == REPLY_4965_RX);
+ struct iwl4965_rx_phy_res *rx_start = (include_phy) ?
+ (struct iwl4965_rx_phy_res *)&(pkt->u.raw[0]) :
+ (struct iwl4965_rx_phy_res *)&priv->last_phy_res[1];
+ __le32 *rx_end;
+ unsigned int len = 0;
+ struct ieee80211_hdr *header;
+ u16 fc;
+ struct ieee80211_rx_status stats = {
+ .mactime = le64_to_cpu(rx_start->timestamp),
+ .channel = le16_to_cpu(rx_start->channel),
+ .phymode =
+ (rx_start->phy_flags & RX_RES_PHY_FLAGS_BAND_24_MSK) ?
+ MODE_IEEE80211G : MODE_IEEE80211A,
+ .antenna = 0,
+ .rate = iwl_hw_get_rate(rx_start->rate_n_flags),
+ .flag = 0,
+#ifdef CONFIG_IWLWIFI_HT_AGG
+ .ordered = 0
+#endif /* CONFIG_IWLWIFI_HT_AGG */
+ };
+ u8 network_packet;
+
+ if ((unlikely(rx_start->cfg_phy_cnt > 20))) {
+ IWL_DEBUG_DROP
+ ("dsp size out of range [0,20]: "
+ "%d/n", rx_start->cfg_phy_cnt);
+ return;
+ }
+ if (!include_phy) {
+ if (priv->last_phy_res[0])
+ rx_start = (struct iwl4965_rx_phy_res *)
+ &priv->last_phy_res[1];
+ else
+ rx_start = NULL;
+ }
+
+ if (!rx_start) {
+ IWL_ERROR("MPDU frame without a PHY data\n");
+ return;
+ }
+
+ if (include_phy) {
+ header = (struct ieee80211_hdr *)((u8 *) & rx_start[1]
+ + rx_start->cfg_phy_cnt);
+
+ len = le16_to_cpu(rx_start->byte_count);
+ rx_end = (__le32 *) (pkt->u.raw + rx_start->cfg_phy_cnt +
+ sizeof(struct iwl4965_rx_phy_res) + len);
+ } else {
+ struct iwl4965_rx_mpdu_res_start *amsdu =
+ (struct iwl4965_rx_mpdu_res_start *)pkt->u.raw;
+
+ header = (void *)(pkt->u.raw +
+ sizeof(struct iwl4965_rx_mpdu_res_start));
+ len = le16_to_cpu(amsdu->byte_count);
+ rx_end = (__le32 *) (pkt->u.raw +
+ sizeof(struct iwl4965_rx_mpdu_res_start) + len);
+ }
+
+ if (!(*rx_end & RX_RES_STATUS_NO_CRC32_ERROR) ||
+ !(*rx_end & RX_RES_STATUS_NO_RXE_OVERFLOW)) {
+ IWL_DEBUG_RX("Bad CRC or FIFO: 0x%08X.\n",
+ le32_to_cpu(*rx_end));
+ return;
+ }
+
+ priv->ucode_beacon_time = le32_to_cpu(rx_start->beacon_time_stamp);
+
+ stats.freq = ieee80211chan2mhz(stats.channel);
+
+ /* Find max signal strength (dBm) among 3 antenna/receiver chains */
+ stats.ssi = iwl4965_calc_rssi(rx_start);
+
+ /* Meaningful noise values are available only from beacon statistics,
+ * which are gathered only when associated, and indicate noise
+ * only for the associated network channel ...
+ * Ignore these noise values while scanning (other channels) */
+ if (iwl_is_associated(priv) &&
+ !test_bit(STATUS_SCANNING, &priv->status)) {
+ stats.noise = priv->last_rx_noise;
+ stats.signal = iwl_calc_sig_qual(stats.ssi, stats.noise);
+ } else {
+ stats.noise = IWL_NOISE_MEAS_NOT_AVAILABLE;
+ stats.signal = iwl_calc_sig_qual(stats.ssi, 0);
+ }
+
+ /* Reset beacon noise level if not associated. */
+ if (!iwl_is_associated(priv))
+ priv->last_rx_noise = IWL_NOISE_MEAS_NOT_AVAILABLE;
+
+#ifdef CONFIG_IWLWIFI_DEBUG
+ /* TODO: Parts of iwl_report_frame are broken for 4965 */
+ if (iwl_debug_level & (IWL_DL_RX))
+ /* Set "1" to report good data frames in groups of 100 */
+ iwl_report_frame(priv, pkt, header, 1);
+
+ if (iwl_debug_level & (IWL_DL_RX | IWL_DL_STATS))
+ IWL_DEBUG_RX("Rssi %d, noise %d, qual %d, TSF %lu\n",
+ stats.ssi, stats.noise, stats.signal,
+ (long unsigned int)le64_to_cpu(rx_start->timestamp));
+#endif
+
+ network_packet = iwl_is_network_packet(priv, header);
+ if (network_packet) {
+ priv->last_rx_rssi = stats.ssi;
+ priv->last_beacon_time = priv->ucode_beacon_time;
+ priv->last_tsf = le64_to_cpu(rx_start->timestamp);
+ }
+
+ fc = le16_to_cpu(header->frame_control);
+ switch (fc & IEEE80211_FCTL_FTYPE) {
+ case IEEE80211_FTYPE_MGMT:
+
+ if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
+ iwl4965_update_ps_mode(priv, fc & IEEE80211_FCTL_PM,
+ header->addr2);
+ switch (fc & IEEE80211_FCTL_STYPE) {
+ case IEEE80211_STYPE_PROBE_RESP:
+ case IEEE80211_STYPE_BEACON:
+ if ((priv->iw_mode == IEEE80211_IF_TYPE_STA &&
+ !compare_ether_addr(header->addr2, priv->bssid)) ||
+ (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
+ !compare_ether_addr(header->addr3, priv->bssid))) {
+ struct ieee80211_mgmt *mgmt =
+ (struct ieee80211_mgmt *)header;
+ u64 timestamp =
+ le64_to_cpu(mgmt->u.beacon.timestamp);
+
+ priv->timestamp0 = timestamp & 0xFFFFFFFF;
+ priv->timestamp1 =
+ (timestamp >> 32) & 0xFFFFFFFF;
+ priv->beacon_int = le16_to_cpu(
+ mgmt->u.beacon.beacon_int);
+ if (priv->call_post_assoc_from_beacon &&
+ (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
+ priv->call_post_assoc_from_beacon = 0;
+ queue_work(priv->workqueue,
+ &priv->post_associate.work);
+ }
+ }
+ break;
+
+ case IEEE80211_STYPE_ACTION:
+ break;
+
+ /*
+ * TODO: There is no callback function from upper
+ * stack to inform us when associated status. this
+ * work around to sniff assoc_resp management frame
+ * and finish the association process.
+ */
+ case IEEE80211_STYPE_ASSOC_RESP:
+ case IEEE80211_STYPE_REASSOC_RESP:
+ if (network_packet && iwl_is_associated(priv)) {
+#ifdef CONFIG_IWLWIFI_HT
+ u8 *pos = NULL;
+ struct ieee802_11_elems elems;
+#endif /*CONFIG_IWLWIFI_HT */
+ struct ieee80211_mgmt *mgnt =
+ (struct ieee80211_mgmt *)header;
+
+ priv->assoc_id = (~((1 << 15) | (1 << 14))
+ & le16_to_cpu(mgnt->u.assoc_resp.aid));
+ priv->assoc_capability =
+ le16_to_cpu(
+ mgnt->u.assoc_resp.capab_info);
+#ifdef CONFIG_IWLWIFI_HT
+ pos = mgnt->u.assoc_resp.variable;
+ if (!parse_elems(pos,
+ len - (pos - (u8 *) mgnt),
+ &elems)) {
+ if (elems.ht_extra_param &&
+ elems.ht_cap_param)
+ break;
+ }
+#endif /*CONFIG_IWLWIFI_HT */
+ /* assoc_id is 0 no association */
+ if (!priv->assoc_id)
+ break;
+ if (priv->beacon_int)
+ queue_work(priv->workqueue,
+ &priv->post_associate.work);
+ else
+ priv->call_post_assoc_from_beacon = 1;
+ }
+
+ break;
+
+ case IEEE80211_STYPE_PROBE_REQ:
+ if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
+ !iwl_is_associated(priv)) {
+ IWL_DEBUG_DROP("Dropping (non network): "
+ MAC_FMT ", " MAC_FMT ", "
+ MAC_FMT "\n",
+ MAC_ARG(header->addr1),
+ MAC_ARG(header->addr2),
+ MAC_ARG(header->addr3));
+ return;
+ }
+ }
+ iwl4965_handle_data_packet(priv, 0, include_phy, rxb, &stats);
+ break;
+
+ case IEEE80211_FTYPE_CTL:
+#ifdef CONFIG_IWLWIFI_HT_AGG
+ switch (fc & IEEE80211_FCTL_STYPE) {
+ case IEEE80211_STYPE_BACK_REQ:
+ IWL_DEBUG_HT("IEEE80211_STYPE_BACK_REQ arrived\n");
+ iwl4965_handle_data_packet(priv, 0, include_phy,
+ rxb, &stats);
+ break;
+ default:
+ break;
+ }
+#endif
+
+ break;
+
+ case IEEE80211_FTYPE_DATA:
+ if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
+ iwl4965_update_ps_mode(priv, fc & IEEE80211_FCTL_PM,
+ header->addr2);
+
+ if (unlikely(!network_packet))
+ IWL_DEBUG_DROP("Dropping (non network): "
+ MAC_FMT ", " MAC_FMT ", "
+ MAC_FMT "\n",
+ MAC_ARG(header->addr1),
+ MAC_ARG(header->addr2),
+ MAC_ARG(header->addr3));
+ else if (unlikely(is_duplicate_packet(priv, header)))
+ IWL_DEBUG_DROP("Dropping (dup): " MAC_FMT ", "
+ MAC_FMT ", " MAC_FMT "\n",
+ MAC_ARG(header->addr1),
+ MAC_ARG(header->addr2),
+ MAC_ARG(header->addr3));
+ else
+ iwl4965_handle_data_packet(priv, 1, include_phy, rxb,
+ &stats);
+ break;
+ default:
+ break;
+
+ }
+}
+
+/* Cache phy data (Rx signal strength, etc) for HT frame (REPLY_RX_PHY_CMD).
+ * This will be used later in iwl4965_rx_reply_rx() for REPLY_RX_MPDU_CMD. */
+static void iwl4965_rx_reply_rx_phy(struct iwl_priv *priv,
+ struct iwl_rx_mem_buffer *rxb)
+{
+ struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
+ priv->last_phy_res[0] = 1;
+ memcpy(&priv->last_phy_res[1], &(pkt->u.raw[0]),
+ sizeof(struct iwl4965_rx_phy_res));
+}
+
+static void iwl4965_rx_missed_beacon_notif(struct iwl_priv *priv,
+ struct iwl_rx_mem_buffer *rxb)
+
+{
+#ifdef CONFIG_IWLWIFI_SENSITIVITY
+ struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
+ struct iwl_missed_beacon_notif *missed_beacon;
+
+ missed_beacon = &pkt->u.missed_beacon;
+ if (le32_to_cpu(missed_beacon->consequtive_missed_beacons) > 5) {
+ IWL_DEBUG_CALIB("missed bcn cnsq %d totl %d rcd %d expctd %d\n",
+ le32_to_cpu(missed_beacon->consequtive_missed_beacons),
+ le32_to_cpu(missed_beacon->total_missed_becons),
+ le32_to_cpu(missed_beacon->num_recvd_beacons),
+ le32_to_cpu(missed_beacon->num_expected_beacons));
+ priv->sensitivity_data.state = IWL_SENS_CALIB_NEED_REINIT;
+ if (unlikely(!test_bit(STATUS_SCANNING, &priv->status)))
+ queue_work(priv->workqueue, &priv->sensitivity_work);
+ }
+#endif /*CONFIG_IWLWIFI_SENSITIVITY*/
+}
+
+#ifdef CONFIG_IWLWIFI_HT
+#ifdef CONFIG_IWLWIFI_HT_AGG
+
+static void iwl4965_set_tx_status(struct iwl_priv *priv, int txq_id, int idx,
+ u32 status, u32 retry_count, u32 rate)
+{
+ struct ieee80211_tx_status *tx_status =
+ &(priv->txq[txq_id].txb[idx].status);
+
+ tx_status->flags = status ? IEEE80211_TX_STATUS_ACK : 0;
+ tx_status->retry_count += retry_count;
+ tx_status->control.tx_rate = rate;
+}
+
+
+static void iwl_sta_modify_enable_tid_tx(struct iwl_priv *priv,
+ int sta_id, int tid)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&priv->sta_lock, flags);
+ priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX;
+ priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid));
+ priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
+ spin_unlock_irqrestore(&priv->sta_lock, flags);
+
+ iwl_send_add_station(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
+}
+
+
+static int iwl4965_tx_status_reply_compressed_ba(struct iwl_priv *priv,
+ struct iwl_ht_agg *agg,
+ struct iwl_compressed_ba_resp*
+ ba_resp)
+
+{
+ int i, sh, ack;
+ u16 ba_seq_ctl = le16_to_cpu(ba_resp->ba_seq_ctl);
+ u32 bitmap0, bitmap1;
+ u32 resp_bitmap0 = le32_to_cpu(ba_resp->ba_bitmap0);
+ u32 resp_bitmap1 = le32_to_cpu(ba_resp->ba_bitmap1);
+
+ if (unlikely(!agg->wait_for_ba)) {
+ IWL_ERROR("Received BA when not expected\n");
+ return -EINVAL;
+ }
+ agg->wait_for_ba = 0;
+ IWL_DEBUG_TX_REPLY("BA %d %d\n", agg->start_idx, ba_resp->ba_seq_ctl);
+ sh = agg->start_idx - SEQ_TO_INDEX(ba_seq_ctl>>4);
+ if (sh < 0) /* tbw something is wrong with indeces */
+ sh += 0x100;
+
+ /* don't use 64 bits for now */
+ bitmap0 = resp_bitmap0 >> sh;
+ bitmap1 = resp_bitmap1 >> sh;
+ bitmap0 |= (resp_bitmap1 & ((1<<sh)|((1<<sh)-1))) << (32 - sh);
+
+ if (agg->frame_count > (64 - sh)) {
+ IWL_DEBUG_TX_REPLY("more frames than bitmap size");
+ return -1;
+ }
+
+ /* check for success or failure according to the
+ * transmitted bitmap and back bitmap */
+ bitmap0 &= agg->bitmap0;
+ bitmap1 &= agg->bitmap1;
+
+ for (i = 0; i < agg->frame_count ; i++) {
+ int idx = (agg->start_idx + i) & 0xff;
+ ack = bitmap0 & (1 << i);
+ IWL_DEBUG_TX_REPLY("%s ON i=%d idx=%d raw=%d\n",
+ ack? "ACK":"NACK", i, idx, agg->start_idx + i);
+ iwl4965_set_tx_status(priv, agg->txq_id, idx, ack, 0,
+ agg->rate_n_flags);
+
+ }
+
+ IWL_DEBUG_TX_REPLY("Bitmap %x%x\n", bitmap0, bitmap1);
+
+ return 0;
+}
+
+static inline int iwl_queue_dec_wrap(int index, int n_bd)
+{
+ return (index == 0) ? n_bd - 1 : index - 1;
+}
+
+static void iwl4965_rx_reply_compressed_ba(struct iwl_priv *priv,
+ struct iwl_rx_mem_buffer *rxb)
+{
+ struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
+ struct iwl_compressed_ba_resp *ba_resp = &pkt->u.compressed_ba;
+ int index;
+ struct iwl_tx_queue *txq = NULL;
+ struct iwl_ht_agg *agg;
+ u16 ba_resp_scd_flow = le16_to_cpu(ba_resp->scd_flow);
+ u16 ba_resp_scd_ssn = le16_to_cpu(ba_resp->scd_ssn);
+
+ if (ba_resp_scd_flow >= ARRAY_SIZE(priv->txq)) {
+ IWL_ERROR("BUG_ON scd_flow is bigger than number of queues");
+ return;
+ }
+
+ txq = &priv->txq[ba_resp_scd_flow];
+ agg = &priv->stations[ba_resp->sta_id].tid[ba_resp->tid].agg;
+ index = iwl_queue_dec_wrap(ba_resp_scd_ssn & 0xff, txq->q.n_bd);
+
+ /* TODO: Need to get this copy more sefely - now good for debug */
+/*
+ IWL_DEBUG_TX_REPLY("REPLY_COMPRESSED_BA [%d]Received from " MAC_FMT ",
+ sta_id = %d\n",
+ agg->wait_for_ba,
+ MAC_ARG((u8*) &ba_resp->sta_addr_lo32),
+ ba_resp->sta_id);
+ IWL_DEBUG_TX_REPLY("TID = %d, SeqCtl = %d, bitmap = 0x%X%X, scd_flow = "
+ "%d, scd_ssn = %d\n",
+ ba_resp->tid,
+ ba_resp->ba_seq_ctl,
+ ba_resp->ba_bitmap1,
+ ba_resp->ba_bitmap0,
+ ba_resp->scd_flow,
+ ba_resp->scd_ssn);
+ IWL_DEBUG_TX_REPLY("DAT start_idx = %d, bitmap = 0x%X%X \n",
+ agg->start_idx,
+ agg->bitmap1,
+ agg->bitmap0);
+*/
+ iwl4965_tx_status_reply_compressed_ba(priv, agg, ba_resp);
+ /* releases all the TFDs until the SSN */
+ if (txq->q.last_used != (ba_resp_scd_ssn & 0xff))
+ iwl_tx_queue_reclaim(priv, ba_resp_scd_flow, index);
+
+}
+
+
+static void iwl4965_tx_queue_stop_scheduler(struct iwl_priv *priv, u16 txq_id)
+{
+ iwl_write_restricted_reg(priv,
+ SCD_QUEUE_STATUS_BITS(txq_id),
+ (0 << SCD_QUEUE_STTS_REG_POS_ACTIVE)|
+ (1 << SCD_QUEUE_STTS_REG_POS_SCD_ACT_EN));
+}
+
+static int iwl4965_tx_queue_set_q2ratid(struct iwl_priv *priv, u16 ra_tid,
+ u16 txq_id)
+{
+ u32 tbl_dw_addr;
+ u32 tbl_dw;
+ u16 scd_q2ratid;
+
+ scd_q2ratid = ra_tid & SCD_QUEUE_RA_TID_MAP_RATID_MSK;
+
+ tbl_dw_addr = priv->scd_base_addr +
+ SCD_TRANSLATE_TBL_OFFSET_QUEUE(txq_id);
+
+ tbl_dw = iwl_read_restricted_mem(priv, tbl_dw_addr);
+
+ if (txq_id & 0x1)
+ tbl_dw = (scd_q2ratid << 16) | (tbl_dw & 0x0000FFFF);
+ else
+ tbl_dw = scd_q2ratid | (tbl_dw & 0xFFFF0000);
+
+ iwl_write_restricted_mem(priv, tbl_dw_addr, tbl_dw);
+
+ return 0;
+}
+
+/**
+ * txq_id must be greater than IWL_BACK_QUEUE_FIRST_ID
+ */
+static int iwl4965_tx_queue_agg_enable(struct iwl_priv *priv, int txq_id,
+ int tx_fifo, int sta_id, int tid,
+ u16 ssn_idx)
+{
+ unsigned long flags;
+ int rc;
+ u16 ra_tid;
+
+ if (IWL_BACK_QUEUE_FIRST_ID > txq_id)
+ IWL_WARNING("queue number too small: %d, must be > %d\n",
+ txq_id, IWL_BACK_QUEUE_FIRST_ID);
+
+ ra_tid = BUILD_RAxTID(sta_id, tid);
+
+ iwl_sta_modify_enable_tid_tx(priv, sta_id, tid);
+
+ spin_lock_irqsave(&priv->lock, flags);
+ rc = iwl_grab_restricted_access(priv);
+ if (rc) {
+ spin_unlock_irqrestore(&priv->lock, flags);
+ return rc;
+ }
+
+ iwl4965_tx_queue_stop_scheduler(priv, txq_id);
+
+ iwl4965_tx_queue_set_q2ratid(priv, ra_tid, txq_id);
+
+
+ iwl_set_bits_restricted_reg(priv, SCD_QUEUECHAIN_SEL, (1<<txq_id));
+
+ priv->txq[txq_id].q.last_used = (ssn_idx & 0xff);
+ priv->txq[txq_id].q.first_empty = (ssn_idx & 0xff);
+
+ /* supposes that ssn_idx is valid (!= 0xFFF) */
+ iwl4965_set_wr_ptrs(priv, txq_id, ssn_idx);
+
+ iwl_write_restricted_mem(priv,
+ priv->scd_base_addr + SCD_CONTEXT_QUEUE_OFFSET(txq_id),
+ (SCD_WIN_SIZE << SCD_QUEUE_CTX_REG1_WIN_SIZE_POS) &
+ SCD_QUEUE_CTX_REG1_WIN_SIZE_MSK);
+
+ iwl_write_restricted_mem(priv, priv->scd_base_addr +
+ SCD_CONTEXT_QUEUE_OFFSET(txq_id) + sizeof(u32),
+ (SCD_FRAME_LIMIT << SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS)
+ & SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK);
+
+ iwl_set_bits_restricted_reg(priv, SCD_INTERRUPT_MASK, (1 << txq_id));
+
+ iwl4965_tx_queue_set_status(priv, &priv->txq[txq_id], tx_fifo, 1);
+
+ iwl_release_restricted_access(priv);
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ return 0;
+}
+
+/**
+ * txq_id must be greater than IWL_BACK_QUEUE_FIRST_ID
+ */
+static int iwl4965_tx_queue_agg_disable(struct iwl_priv *priv, u16 txq_id,
+ u16 ssn_idx, u8 tx_fifo)
+{
+ unsigned long flags;
+ int rc;
+
+ if (IWL_BACK_QUEUE_FIRST_ID > txq_id) {
+ IWL_WARNING("queue number too small: %d, must be > %d\n",
+ txq_id, IWL_BACK_QUEUE_FIRST_ID);
+ return -EINVAL;
+ }
+
+ spin_lock_irqsave(&priv->lock, flags);
+ rc = iwl_grab_restricted_access(priv);
+ if (rc) {
+ spin_unlock_irqrestore(&priv->lock, flags);
+ return rc;
+ }
+
+ iwl4965_tx_queue_stop_scheduler(priv, txq_id);
+
+ iwl_clear_bits_restricted_reg(priv, SCD_QUEUECHAIN_SEL, (1 << txq_id));
+
+ priv->txq[txq_id].q.last_used = (ssn_idx & 0xff);
+ priv->txq[txq_id].q.first_empty = (ssn_idx & 0xff);
+ /* supposes that ssn_idx is valid (!= 0xFFF) */
+ iwl4965_set_wr_ptrs(priv, txq_id, ssn_idx);
+
+ iwl_clear_bits_restricted_reg(priv, SCD_INTERRUPT_MASK, (1 << txq_id));
+ iwl4965_txq_ctx_deactivate(priv, txq_id);
+ iwl4965_tx_queue_set_status(priv, &priv->txq[txq_id], tx_fifo, 0);
+
+ iwl_release_restricted_access(priv);
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ return 0;
+}
+
+#endif/* CONFIG_IWLWIFI_HT_AGG */
+#endif /* CONFIG_IWLWIFI_HT */
+/*
+ * RATE SCALE CODE
+ */
+int iwl4965_init_hw_rates(struct iwl_priv *priv, struct ieee80211_rate *rates)
+{
+ return 0;
+}
+
+
+/**
+ * iwl4965_add_station - Initialize a station's hardware rate table
+ *
+ * The uCode contains a table of fallback rates and retries per rate
+ * for automatic fallback during transmission.
+ *
+ * NOTE: This initializes the table for a single retry per data rate
+ * which is not optimal. Setting up an intelligent retry per rate
+ * requires feedback from transmission, which isn't exposed through
+ * rc80211_simple which is what this driver is currently using.
+ *
+ */
+void iwl4965_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
+{
+ int i, r;
+ struct iwl_link_quality_cmd link_cmd = {
+ .reserved1 = 0,
+ };
+ u16 rate_flags;
+
+ /* Set up the rate scaling to start at 54M and fallback
+ * all the way to 1M in IEEE order and then spin on IEEE */
+ if (is_ap)
+ r = IWL_RATE_54M_INDEX;
+ else if (priv->phymode == MODE_IEEE80211A)
+ r = IWL_RATE_6M_INDEX;
+ else
+ r = IWL_RATE_1M_INDEX;
+
+ for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
+ rate_flags = 0;
+ if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE)
+ rate_flags |= RATE_MCS_CCK_MSK;
+
+ rate_flags |= RATE_MCS_ANT_B_MSK;
+ rate_flags &= ~RATE_MCS_ANT_A_MSK;
+ link_cmd.rs_table[i].rate_n_flags =
+ iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags);
+ r = iwl_get_prev_ieee_rate(r);
+ }
+
+ link_cmd.general_params.single_stream_ant_msk = 2;
+ link_cmd.general_params.dual_stream_ant_msk = 3;
+ link_cmd.agg_params.agg_dis_start_th = 3;
+ link_cmd.agg_params.agg_time_limit = cpu_to_le16(4000);
+
+ /* Update the rate scaling for control frame Tx to AP */
+ link_cmd.sta_id = is_ap ? IWL_AP_ID : IWL4965_BROADCAST_ID;
+
+ iwl_send_cmd_pdu(priv, REPLY_TX_LINK_QUALITY_CMD, sizeof(link_cmd),
+ &link_cmd);
+}
+
+#ifdef CONFIG_IWLWIFI_HT
+
+static u8 iwl_is_channel_extension(struct iwl_priv *priv, int phymode,
+ u16 channel, u8 extension_chan_offset)
+{
+ const struct iwl_channel_info *ch_info;
+
+ ch_info = iwl_get_channel_info(priv, phymode, channel);
+ if (!is_channel_valid(ch_info))
+ return 0;
+
+ if (extension_chan_offset == IWL_EXT_CHANNEL_OFFSET_AUTO)
+ return 0;
+
+ if ((ch_info->fat_extension_channel == extension_chan_offset) ||
+ (ch_info->fat_extension_channel == HT_IE_EXT_CHANNEL_MAX))
+ return 1;
+
+ return 0;
+}
+
+static u8 iwl_is_fat_tx_allowed(struct iwl_priv *priv,
+ const struct sta_ht_info *ht_info)
+{
+
+ if (priv->channel_width != IWL_CHANNEL_WIDTH_40MHZ)
+ return 0;
+
+ if (ht_info->supported_chan_width != IWL_CHANNEL_WIDTH_40MHZ)
+ return 0;
+
+ if (ht_info->extension_chan_offset == IWL_EXT_CHANNEL_OFFSET_AUTO)
+ return 0;
+
+ /* no fat tx allowed on 2.4GHZ */
+ if (priv->phymode != MODE_IEEE80211A)
+ return 0;
+ return (iwl_is_channel_extension(priv, priv->phymode,
+ ht_info->control_channel,
+ ht_info->extension_chan_offset));
+}
+
+void iwl4965_set_rxon_ht(struct iwl_priv *priv, struct sta_ht_info *ht_info)
+{
+ struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
+ u32 val;
+
+ if (!ht_info->is_ht)
+ return;
+
+ if (iwl_is_fat_tx_allowed(priv, ht_info))
+ rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED_MSK;
+ else
+ rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
+ RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
+
+ if (le16_to_cpu(rxon->channel) != ht_info->control_channel) {
+ IWL_DEBUG_ASSOC("control diff than current %d %d\n",
+ le16_to_cpu(rxon->channel),
+ ht_info->control_channel);
+ rxon->channel = cpu_to_le16(ht_info->control_channel);
+ return;
+ }
+
+ /* Note: control channel is oposit to extension channel */
+ switch (ht_info->extension_chan_offset) {
+ case IWL_EXT_CHANNEL_OFFSET_ABOVE:
+ rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK);
+ break;
+ case IWL_EXT_CHANNEL_OFFSET_BELOW:
+ rxon->flags |= RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK;
+ break;
+ case IWL_EXT_CHANNEL_OFFSET_AUTO:
+ rxon->flags &= ~RXON_FLG_CHANNEL_MODE_MIXED_MSK;
+ break;
+ default:
+ rxon->flags &= ~RXON_FLG_CHANNEL_MODE_MIXED_MSK;
+ break;
+ }
+
+ val = ht_info->operating_mode;
+
+ rxon->flags |= cpu_to_le32(val << RXON_FLG_HT_OPERATING_MODE_POS);
+
+ priv->active_rate_ht[0] = ht_info->supp_rates[0];
+ priv->active_rate_ht[1] = ht_info->supp_rates[1];
+ iwl4965_set_rxon_chain(priv);
+
+ IWL_DEBUG_ASSOC("supported HT rate 0x%X %X "
+ "rxon flags 0x%X operation mode :0x%X "
+ "extension channel offset 0x%x "
+ "control chan %d\n",
+ priv->active_rate_ht[0], priv->active_rate_ht[1],
+ le32_to_cpu(rxon->flags), ht_info->operating_mode,
+ ht_info->extension_chan_offset,
+ ht_info->control_channel);
+ return;
+}
+
+void iwl4965_set_ht_add_station(struct iwl_priv *priv, u8 index)
+{
+ __le32 sta_flags;
+ struct sta_ht_info *ht_info = &priv->current_assoc_ht;
+
+ priv->current_channel_width = IWL_CHANNEL_WIDTH_20MHZ;
+ if (!ht_info->is_ht)
+ goto done;
+
+ sta_flags = priv->stations[index].sta.station_flags;
+
+ if (ht_info->tx_mimo_ps_mode == IWL_MIMO_PS_DYNAMIC)
+ sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK;
+ else
+ sta_flags &= ~STA_FLG_RTS_MIMO_PROT_MSK;
+
+ sta_flags |= cpu_to_le32(
+ (u32)ht_info->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS);
+
+ sta_flags |= cpu_to_le32(
+ (u32)ht_info->mpdu_density << STA_FLG_AGG_MPDU_DENSITY_POS);
+
+ sta_flags &= (~STA_FLG_FAT_EN_MSK);
+ ht_info->tx_chan_width = IWL_CHANNEL_WIDTH_20MHZ;
+ ht_info->chan_width_cap = IWL_CHANNEL_WIDTH_20MHZ;
+
+ if (iwl_is_fat_tx_allowed(priv, ht_info)) {
+ sta_flags |= STA_FLG_FAT_EN_MSK;
+ ht_info->chan_width_cap = IWL_CHANNEL_WIDTH_40MHZ;
+ if (ht_info->supported_chan_width == IWL_CHANNEL_WIDTH_40MHZ)
+ ht_info->tx_chan_width = IWL_CHANNEL_WIDTH_40MHZ;
+ }
+ priv->current_channel_width = ht_info->tx_chan_width;
+ priv->stations[index].sta.station_flags = sta_flags;
+ done:
+ return;
+}
+
+#ifdef CONFIG_IWLWIFI_HT_AGG
+
+static void iwl4965_sta_modify_add_ba_tid(struct iwl_priv *priv,
+ int sta_id, int tid, u16 ssn)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&priv->sta_lock, flags);
+ priv->stations[sta_id].sta.station_flags_msk = 0;
+ priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_ADDBA_TID_MSK;
+ priv->stations[sta_id].sta.add_immediate_ba_tid = (u8)tid;
+ priv->stations[sta_id].sta.add_immediate_ba_ssn = cpu_to_le16(ssn);
+ priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
+ spin_unlock_irqrestore(&priv->sta_lock, flags);
+
+ iwl_send_add_station(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
+}
+
+static void iwl4965_sta_modify_del_ba_tid(struct iwl_priv *priv,
+ int sta_id, int tid)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&priv->sta_lock, flags);
+ priv->stations[sta_id].sta.station_flags_msk = 0;
+ priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_DELBA_TID_MSK;
+ priv->stations[sta_id].sta.remove_immediate_ba_tid = (u8)tid;
+ priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
+ spin_unlock_irqrestore(&priv->sta_lock, flags);
+
+ iwl_send_add_station(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
+}
+
+static const u16 default_tid_to_tx_fifo[] = {
+ IWL_TX_FIFO_AC1,
+ IWL_TX_FIFO_AC0,
+ IWL_TX_FIFO_AC0,
+ IWL_TX_FIFO_AC1,
+ IWL_TX_FIFO_AC2,
+ IWL_TX_FIFO_AC2,
+ IWL_TX_FIFO_AC3,
+ IWL_TX_FIFO_AC3,
+ IWL_TX_FIFO_NONE,
+ IWL_TX_FIFO_NONE,
+ IWL_TX_FIFO_NONE,
+ IWL_TX_FIFO_NONE,
+ IWL_TX_FIFO_NONE,
+ IWL_TX_FIFO_NONE,
+ IWL_TX_FIFO_NONE,
+ IWL_TX_FIFO_NONE,
+ IWL_TX_FIFO_AC3
+};
+
+static int iwl_txq_ctx_activate_free(struct iwl_priv *priv)
+{
+ int txq_id;
+
+ for (txq_id = 0; txq_id < priv->hw_setting.max_txq_num; txq_id++)
+ if (!test_and_set_bit(txq_id, &priv->txq_ctx_active_msk))
+ return txq_id;
+ return -1;
+}
+
+int iwl_mac_ht_tx_agg_start(struct ieee80211_hw *hw, u8 *da, u16 tid,
+ u16 *start_seq_num)
+{
+
+ struct iwl_priv *priv = hw->priv;
+ int sta_id;
+ int tx_fifo;
+ int txq_id;
+ int ssn = -1;
+ unsigned long flags;
+ struct iwl_tid_data *tid_data;
+
+ if (likely(tid < ARRAY_SIZE(default_tid_to_tx_fifo)))
+ tx_fifo = default_tid_to_tx_fifo[tid];
+ else
+ return -EINVAL;
+
+ IWL_WARNING("iwl-AGG iwl_mac_ht_tx_agg_start on da=" MAC_FMT
+ " tid=%d\n", MAC_ARG(da), tid);
+
+ sta_id = iwl_hw_find_station(priv, da);
+ if (sta_id == IWL_INVALID_STATION)
+ return -ENXIO;
+
+ txq_id = iwl_txq_ctx_activate_free(priv);
+ if (txq_id == -1)
+ return -ENXIO;
+
+ spin_lock_irqsave(&priv->sta_lock, flags);
+ tid_data = &priv->stations[sta_id].tid[tid];
+ ssn = SEQ_TO_SN(tid_data->seq_number);
+ tid_data->agg.txq_id = txq_id;
+ spin_unlock_irqrestore(&priv->sta_lock, flags);
+
+ *start_seq_num = ssn;
+ iwl4965_ba_status(priv, tid, BA_STATUS_ACTIVE);
+ return iwl4965_tx_queue_agg_enable(priv, txq_id, tx_fifo,
+ sta_id, tid, ssn);
+}
+
+
+int iwl_mac_ht_tx_agg_stop(struct ieee80211_hw *hw, u8 *da, u16 tid,
+ int generator)
+{
+
+ struct iwl_priv *priv = hw->priv;
+ int tx_fifo_id, txq_id, sta_id, ssn = -1;
+ struct iwl_tid_data *tid_data;
+ int rc;
+ if (!da) {
+ IWL_ERROR("%s: da = NULL\n", __func__);
+ return -EINVAL;
+ }
+
+ if (likely(tid < ARRAY_SIZE(default_tid_to_tx_fifo)))
+ tx_fifo_id = default_tid_to_tx_fifo[tid];
+ else
+ return -EINVAL;
+
+ sta_id = iwl_hw_find_station(priv, da);
+
+ if (sta_id == IWL_INVALID_STATION)
+ return -ENXIO;
+
+ tid_data = &priv->stations[sta_id].tid[tid];
+ ssn = (tid_data->seq_number & IEEE80211_SCTL_SEQ) >> 4;
+ txq_id = tid_data->agg.txq_id;
+
+ rc = iwl4965_tx_queue_agg_disable(priv, txq_id, ssn, tx_fifo_id);
+ /* FIXME: need more safe way to handle error condition */
+ if (rc)
+ return rc;
+
+ iwl4965_ba_status(priv, tid, BA_STATUS_INITIATOR_DELBA);
+ IWL_DEBUG_INFO("iwl_mac_ht_tx_agg_stop on da=" MAC_FMT " tid=%d\n",
+ MAC_ARG(da), tid);
+
+ return 0;
+}
+
+int iwl_mac_ht_rx_agg_start(struct ieee80211_hw *hw, u8 *da,
+ u16 tid, u16 start_seq_num)
+{
+ struct iwl_priv *priv = hw->priv;
+ int sta_id;
+
+ IWL_WARNING("iwl-AGG iwl_mac_ht_rx_agg_start on da=" MAC_FMT
+ " tid=%d\n", MAC_ARG(da), tid);
+ sta_id = iwl_hw_find_station(priv, da);
+ iwl4965_sta_modify_add_ba_tid(priv, sta_id, tid, start_seq_num);
+ return 0;
+}
+
+int iwl_mac_ht_rx_agg_stop(struct ieee80211_hw *hw, u8 *da,
+ u16 tid, int generator)
+{
+ struct iwl_priv *priv = hw->priv;
+ int sta_id;
+
+ IWL_WARNING("iwl-AGG iwl_mac_ht_rx_agg_stop on da=" MAC_FMT " tid=%d\n",
+ MAC_ARG(da), tid);
+ sta_id = iwl_hw_find_station(priv, da);
+ iwl4965_sta_modify_del_ba_tid(priv, sta_id, tid);
+ return 0;
+}
+
+#endif /* CONFIG_IWLWIFI_HT_AGG */
+#endif /* CONFIG_IWLWIFI_HT */
+
+/* Set up 4965-specific Rx frame reply handlers */
+void iwl_hw_rx_handler_setup(struct iwl_priv *priv)
+{
+ /* Legacy Rx frames */
+ priv->rx_handlers[REPLY_4965_RX] = iwl4965_rx_reply_rx;
+
+ /* High-throughput (HT) Rx frames */
+ priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl4965_rx_reply_rx_phy;
+ priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl4965_rx_reply_rx;
+
+ priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
+ iwl4965_rx_missed_beacon_notif;
+
+#ifdef CONFIG_IWLWIFI_HT
+#ifdef CONFIG_IWLWIFI_HT_AGG
+ priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl4965_rx_reply_compressed_ba;
+#endif /* CONFIG_IWLWIFI_AGG */
+#endif /* CONFIG_IWLWIFI */
+}
+
+void iwl_hw_setup_deferred_work(struct iwl_priv *priv)
+{
+ INIT_WORK(&priv->txpower_work, iwl4965_bg_txpower_work);
+ INIT_WORK(&priv->statistics_work, iwl4965_bg_statistics_work);
+#ifdef CONFIG_IWLWIFI_SENSITIVITY
+ INIT_WORK(&priv->sensitivity_work, iwl4965_bg_sensitivity_work);
+#endif
+#ifdef CONFIG_IWLWIFI_HT
+#ifdef CONFIG_IWLWIFI_HT_AGG
+ INIT_WORK(&priv->agg_work, iwl4965_bg_agg_work);
+#endif /* CONFIG_IWLWIFI_AGG */
+#endif /* CONFIG_IWLWIFI_HT */
+ init_timer(&priv->statistics_periodic);
+ priv->statistics_periodic.data = (unsigned long)priv;
+ priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
+}
+
+void iwl_hw_cancel_deferred_work(struct iwl_priv *priv)
+{
+ del_timer_sync(&priv->statistics_periodic);
+
+ cancel_delayed_work(&priv->init_alive_start);
+}
+
+struct pci_device_id iwl_hw_card_ids[] = {
+ {0x8086, 0x4229, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+ {0x8086, 0x4230, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
+ {0}
+};
+
+int iwl_eeprom_aqcuire_semaphore(struct iwl_priv *priv)
+{
+ u16 count;
+ int rc;
+
+ for (count = 0; count < EEPROM_SEM_RETRY_LIMIT; count++) {
+ iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
+ CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM);
+ rc = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
+ CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM,
+ CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM,
+ EEPROM_SEM_TIMEOUT);
+ if (rc >= 0) {
+ IWL_DEBUG_IO("Aqcuired semaphore after %d tries.\n",
+ count+1);
+ return rc;
+ }
+ }
+
+ return rc;
+}
+
+inline void iwl_eeprom_release_semaphore(struct iwl_priv *priv)
+{
+ iwl_clear_bit(priv, CSR_HW_IF_CONFIG_REG,
+ CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM);
+}
+
+
+MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);