diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-4965.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-4965.c | 2368 |
1 files changed, 0 insertions, 2368 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-4965.c b/drivers/net/wireless/iwlwifi/iwl-4965.c deleted file mode 100644 index 5a72bc0377d..00000000000 --- a/drivers/net/wireless/iwlwifi/iwl-4965.c +++ /dev/null @@ -1,2368 +0,0 @@ -/****************************************************************************** - * - * Copyright(c) 2003 - 2008 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: - * Intel Linux Wireless <ilw@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/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/etherdevice.h> -#include <asm/unaligned.h> - -#include "iwl-eeprom.h" -#include "iwl-dev.h" -#include "iwl-core.h" -#include "iwl-io.h" -#include "iwl-helpers.h" -#include "iwl-calib.h" -#include "iwl-sta.h" - -static int iwl4965_send_tx_power(struct iwl_priv *priv); -static int iwl4965_hw_get_temperature(const struct iwl_priv *priv); - -/* Highest firmware API version supported */ -#define IWL4965_UCODE_API_MAX 2 - -/* Lowest firmware API version supported */ -#define IWL4965_UCODE_API_MIN 2 - -#define IWL4965_FW_PRE "iwlwifi-4965-" -#define _IWL4965_MODULE_FIRMWARE(api) IWL4965_FW_PRE #api ".ucode" -#define IWL4965_MODULE_FIRMWARE(api) _IWL4965_MODULE_FIRMWARE(api) - - -/* module parameters */ -static struct iwl_mod_params iwl4965_mod_params = { - .num_of_queues = IWL49_NUM_QUEUES, - .num_of_ampdu_queues = IWL49_NUM_AMPDU_QUEUES, - .amsdu_size_8K = 1, - .restart_fw = 1, - /* the rest are 0 by default */ -}; - -/* check contents of special bootstrap uCode SRAM */ -static int iwl4965_verify_bsm(struct iwl_priv *priv) -{ - __le32 *image = priv->ucode_boot.v_addr; - u32 len = priv->ucode_boot.len; - u32 reg; - u32 val; - - IWL_DEBUG_INFO("Begin verify bsm\n"); - - /* verify BSM SRAM contents */ - val = iwl_read_prph(priv, BSM_WR_DWCOUNT_REG); - for (reg = BSM_SRAM_LOWER_BOUND; - reg < BSM_SRAM_LOWER_BOUND + len; - reg += sizeof(u32), image++) { - val = iwl_read_prph(priv, reg); - if (val != le32_to_cpu(*image)) { - IWL_ERROR("BSM uCode verification failed at " - "addr 0x%08X+%u (of %u), is 0x%x, s/b 0x%x\n", - BSM_SRAM_LOWER_BOUND, - reg - BSM_SRAM_LOWER_BOUND, len, - val, le32_to_cpu(*image)); - return -EIO; - } - } - - IWL_DEBUG_INFO("BSM bootstrap uCode image OK\n"); - - return 0; -} - -/** - * iwl4965_load_bsm - Load bootstrap instructions - * - * BSM operation: - * - * The Bootstrap State Machine (BSM) stores a short bootstrap uCode program - * in special SRAM that does not power down during RFKILL. When powering back - * up after power-saving sleeps (or during initial uCode load), the BSM loads - * the bootstrap program into the on-board processor, and starts it. - * - * The bootstrap program loads (via DMA) instructions and data for a new - * program from host DRAM locations indicated by the host driver in the - * BSM_DRAM_* registers. Once the new program is loaded, it starts - * automatically. - * - * When initializing the NIC, the host driver points the BSM to the - * "initialize" uCode image. This uCode sets up some internal data, then - * notifies host via "initialize alive" that it is complete. - * - * The host then replaces the BSM_DRAM_* pointer values to point to the - * normal runtime uCode instructions and a backup uCode data cache buffer - * (filled initially with starting data values for the on-board processor), - * then triggers the "initialize" uCode to load and launch the runtime uCode, - * which begins normal operation. - * - * When doing a power-save shutdown, runtime uCode saves data SRAM into - * the backup data cache in DRAM before SRAM is powered down. - * - * When powering back up, the BSM loads the bootstrap program. This reloads - * the runtime uCode instructions and the backup data cache into SRAM, - * and re-launches the runtime uCode from where it left off. - */ -static int iwl4965_load_bsm(struct iwl_priv *priv) -{ - __le32 *image = priv->ucode_boot.v_addr; - u32 len = priv->ucode_boot.len; - dma_addr_t pinst; - dma_addr_t pdata; - u32 inst_len; - u32 data_len; - int i; - u32 done; - u32 reg_offset; - int ret; - - IWL_DEBUG_INFO("Begin load bsm\n"); - - priv->ucode_type = UCODE_RT; - - /* make sure bootstrap program is no larger than BSM's SRAM size */ - if (len > IWL_MAX_BSM_SIZE) - return -EINVAL; - - /* Tell bootstrap uCode where to find the "Initialize" uCode - * in host DRAM ... host DRAM physical address bits 35:4 for 4965. - * NOTE: iwl_init_alive_start() will replace these values, - * after the "initialize" uCode has run, to point to - * runtime/protocol instructions and backup data cache. - */ - pinst = priv->ucode_init.p_addr >> 4; - pdata = priv->ucode_init_data.p_addr >> 4; - inst_len = priv->ucode_init.len; - data_len = priv->ucode_init_data.len; - - ret = iwl_grab_nic_access(priv); - if (ret) - return ret; - - iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst); - iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata); - iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, inst_len); - iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, data_len); - - /* Fill BSM memory with bootstrap instructions */ - for (reg_offset = BSM_SRAM_LOWER_BOUND; - reg_offset < BSM_SRAM_LOWER_BOUND + len; - reg_offset += sizeof(u32), image++) - _iwl_write_prph(priv, reg_offset, le32_to_cpu(*image)); - - ret = iwl4965_verify_bsm(priv); - if (ret) { - iwl_release_nic_access(priv); - return ret; - } - - /* Tell BSM to copy from BSM SRAM into instruction SRAM, when asked */ - iwl_write_prph(priv, BSM_WR_MEM_SRC_REG, 0x0); - iwl_write_prph(priv, BSM_WR_MEM_DST_REG, RTC_INST_LOWER_BOUND); - iwl_write_prph(priv, BSM_WR_DWCOUNT_REG, len / sizeof(u32)); - - /* Load bootstrap code into instruction SRAM now, - * to prepare to load "initialize" uCode */ - iwl_write_prph(priv, BSM_WR_CTRL_REG, BSM_WR_CTRL_REG_BIT_START); - - /* Wait for load of bootstrap uCode to finish */ - for (i = 0; i < 100; i++) { - done = iwl_read_prph(priv, BSM_WR_CTRL_REG); - if (!(done & BSM_WR_CTRL_REG_BIT_START)) - break; - udelay(10); - } - if (i < 100) - IWL_DEBUG_INFO("BSM write complete, poll %d iterations\n", i); - else { - IWL_ERROR("BSM write did not complete!\n"); - return -EIO; - } - - /* Enable future boot loads whenever power management unit triggers it - * (e.g. when powering back up after power-save shutdown) */ - iwl_write_prph(priv, BSM_WR_CTRL_REG, BSM_WR_CTRL_REG_BIT_START_EN); - - iwl_release_nic_access(priv); - - return 0; -} - -/** - * iwl4965_set_ucode_ptrs - Set uCode address location - * - * Tell initialization uCode where to find runtime uCode. - * - * BSM registers initially contain pointers to initialization uCode. - * We need to replace them to load runtime uCode inst and data, - * and to save runtime data when powering down. - */ -static int iwl4965_set_ucode_ptrs(struct iwl_priv *priv) -{ - dma_addr_t pinst; - dma_addr_t pdata; - unsigned long flags; - int ret = 0; - - /* bits 35:4 for 4965 */ - pinst = priv->ucode_code.p_addr >> 4; - pdata = priv->ucode_data_backup.p_addr >> 4; - - spin_lock_irqsave(&priv->lock, flags); - ret = iwl_grab_nic_access(priv); - if (ret) { - spin_unlock_irqrestore(&priv->lock, flags); - return ret; - } - - /* Tell bootstrap uCode where to find image to load */ - iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst); - iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata); - iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG, - priv->ucode_data.len); - - /* Inst byte count must be last to set up, bit 31 signals uCode - * that all new ptr/size info is in place */ - iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG, - priv->ucode_code.len | BSM_DRAM_INST_LOAD); - iwl_release_nic_access(priv); - - spin_unlock_irqrestore(&priv->lock, flags); - - IWL_DEBUG_INFO("Runtime uCode pointers are set.\n"); - - return ret; -} - -/** - * iwl4965_init_alive_start - Called after REPLY_ALIVE notification received - * - * Called after REPLY_ALIVE notification received from "initialize" uCode. - * - * The 4965 "initialize" ALIVE reply contains calibration data for: - * Voltage, temperature, and MIMO tx gain correction, now stored in priv - * (3945 does not contain this data). - * - * Tell "initialize" uCode to go ahead and load the runtime uCode. -*/ -static void iwl4965_init_alive_start(struct iwl_priv *priv) -{ - /* Check alive response for "valid" sign from uCode */ - if (priv->card_alive_init.is_valid != UCODE_VALID_OK) { - /* We had an error bringing up the hardware, so take it - * all the way back down so we can try again */ - IWL_DEBUG_INFO("Initialize Alive failed.\n"); - goto restart; - } - - /* Bootstrap uCode has loaded initialize uCode ... verify inst image. - * This is a paranoid check, because we would not have gotten the - * "initialize" alive if code weren't properly loaded. */ - if (iwl_verify_ucode(priv)) { - /* Runtime instruction load was bad; - * take it all the way back down so we can try again */ - IWL_DEBUG_INFO("Bad \"initialize\" uCode load.\n"); - goto restart; - } - - /* Calculate temperature */ - priv->temperature = iwl4965_hw_get_temperature(priv); - - /* Send pointers to protocol/runtime uCode image ... init code will - * load and launch runtime uCode, which will send us another "Alive" - * notification. */ - IWL_DEBUG_INFO("Initialization Alive received.\n"); - if (iwl4965_set_ucode_ptrs(priv)) { - /* Runtime instruction load won't happen; - * take it all the way back down so we can try again */ - IWL_DEBUG_INFO("Couldn't set up uCode pointers.\n"); - goto restart; - } - return; - -restart: - queue_work(priv->workqueue, &priv->restart); -} - -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); -} - -/* - * EEPROM handlers - */ -static u16 iwl4965_eeprom_calib_version(struct iwl_priv *priv) -{ - return iwl_eeprom_query16(priv, EEPROM_4965_CALIB_VERSION_OFFSET); -} - -/* - * Activate/Deactivate Tx DMA/FIFO channels according tx fifos mask - * must be called under priv->lock and mac access - */ -static void iwl4965_txq_set_sched(struct iwl_priv *priv, u32 mask) -{ - iwl_write_prph(priv, IWL49_SCD_TXFACT, mask); -} - -static int iwl4965_apm_init(struct iwl_priv *priv) -{ - int ret = 0; - - iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS, - CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER); - - /* disable L0s without affecting L1 :don't wait for ICH L0s bug W/A) */ - iwl_set_bit(priv, CSR_GIO_CHICKEN_BITS, - CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX); - - /* set "initialization complete" bit to move adapter - * D0U* --> D0A* state */ - iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); - - /* wait for clock stabilization */ - ret = iwl_poll_direct_bit(priv, CSR_GP_CNTRL, - CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000); - if (ret < 0) { - IWL_DEBUG_INFO("Failed to init the card\n"); - goto out; - } - - ret = iwl_grab_nic_access(priv); - if (ret) - goto out; - - /* enable DMA */ - iwl_write_prph(priv, APMG_CLK_CTRL_REG, APMG_CLK_VAL_DMA_CLK_RQT | - APMG_CLK_VAL_BSM_CLK_RQT); - - udelay(20); - - /* disable L1-Active */ - iwl_set_bits_prph(priv, APMG_PCIDEV_STT_REG, - APMG_PCIDEV_STT_VAL_L1_ACT_DIS); - - iwl_release_nic_access(priv); -out: - return ret; -} - - -static void iwl4965_nic_config(struct iwl_priv *priv) -{ - unsigned long flags; - u32 val; - u16 radio_cfg; - u16 link; - - spin_lock_irqsave(&priv->lock, flags); - - if ((priv->rev_id & 0x80) == 0x80 && (priv->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)); - } - - pci_read_config_word(priv->pci_dev, PCI_CFG_LINK_CTRL, &link); - - /* L1 is enabled by BIOS */ - if ((link & PCI_CFG_LINK_CTRL_VAL_L1_EN) == PCI_CFG_LINK_CTRL_VAL_L1_EN) - /* disable L0S disabled L1A enabled */ - iwl_set_bit(priv, CSR_GIO_REG, CSR_GIO_REG_VAL_L0S_ENABLED); - else - /* L0S enabled L1A disabled */ - iwl_clear_bit(priv, CSR_GIO_REG, CSR_GIO_REG_VAL_L0S_ENABLED); - - radio_cfg = iwl_eeprom_query16(priv, EEPROM_RADIO_CONFIG); - - /* write radio config values to register */ - if (EEPROM_RF_CFG_TYPE_MSK(radio_cfg) == EEPROM_4965_RF_CFG_TYPE_MAX) - iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG, - EEPROM_RF_CFG_TYPE_MSK(radio_cfg) | - EEPROM_RF_CFG_STEP_MSK(radio_cfg) | - EEPROM_RF_CFG_DASH_MSK(radio_cfg)); - - /* set CSR_HW_CONFIG_REG for uCode use */ - iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG, - CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI | - CSR_HW_IF_CONFIG_REG_BIT_MAC_SI); - - priv->calib_info = (struct iwl_eeprom_calib_info *) - iwl_eeprom_query_addr(priv, EEPROM_4965_CALIB_TXPOWER_OFFSET); - - spin_unlock_irqrestore(&priv->lock, flags); -} - -static int iwl4965_apm_stop_master(struct iwl_priv *priv) -{ - 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); - - iwl_poll_direct_bit(priv, CSR_RESET, - CSR_RESET_REG_FLAG_MASTER_DISABLED, 100); - - spin_unlock_irqrestore(&priv->lock, flags); - IWL_DEBUG_INFO("stop master\n"); - - return 0; -} - -static void iwl4965_apm_stop(struct iwl_priv *priv) -{ - unsigned long flags; - - iwl4965_apm_stop_master(priv); - - spin_lock_irqsave(&priv->lock, flags); - - iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET); - - udelay(10); - /* clear "init complete" move adapter D0A* --> D0U state */ - iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); - spin_unlock_irqrestore(&priv->lock, flags); -} - -static int iwl4965_apm_reset(struct iwl_priv *priv) -{ - int ret = 0; - unsigned long flags; - - iwl4965_apm_stop_master(priv); - - spin_lock_irqsave(&priv->lock, flags); - - iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET); - - udelay(10); - - /* FIXME: put here L1A -L0S w/a */ - - iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); - - ret = iwl_poll_direct_bit(priv, CSR_GP_CNTRL, - CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000); - if (ret < 0) - goto out; - - udelay(10); - - ret = iwl_grab_nic_access(priv); - if (ret) - goto out; - /* Enable DMA and BSM Clock */ - iwl_write_prph(priv, APMG_CLK_EN_REG, APMG_CLK_VAL_DMA_CLK_RQT | - APMG_CLK_VAL_BSM_CLK_RQT); - - udelay(10); - - /* disable L1A */ - iwl_set_bits_prph(priv, APMG_PCIDEV_STT_REG, - APMG_PCIDEV_STT_VAL_L1_ACT_DIS); - - iwl_release_nic_access(priv); - - clear_bit(STATUS_HCMD_ACTIVE, &priv->status); - wake_up_interruptible(&priv->wait_command_queue); - -out: - spin_unlock_irqrestore(&priv->lock, flags); - - return ret; -} - -/* 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. */ -static void iwl4965_chain_noise_reset(struct iwl_priv *priv) -{ - struct iwl_chain_noise_data *data = &(priv->chain_noise_data); - - if ((data->state == IWL_CHAIN_NOISE_ALIVE) && iwl_is_associated(priv)) { - struct iwl_calib_diff_gain_cmd cmd; - - memset(&cmd, 0, sizeof(cmd)); - cmd.hdr.op_code = IWL_PHY_CALIBRATE_DIFF_GAIN_CMD; - cmd.diff_gain_a = 0; - cmd.diff_gain_b = 0; - cmd.diff_gain_c = 0; - if (iwl_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD, - sizeof(cmd), &cmd)) - IWL_ERROR("Could not send REPLY_PHY_CALIBRATION_CMD\n"); - data->state = IWL_CHAIN_NOISE_ACCUMULATE; - IWL_DEBUG_CALIB("Run chain_noise_calibrate\n"); - } -} - -static void iwl4965_gain_computation(struct iwl_priv *priv, - u32 *average_noise, - u16 min_average_noise_antenna_i, - u32 min_average_noise) -{ - int i, ret; - struct iwl_chain_noise_data *data = &priv->chain_noise_data; - - data->delta_gain_code[min_average_noise_antenna_i] = 0; - - 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); - data->delta_gain_code[i] = - min(data->delta_gain_code[i], - (u8) 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_calib_diff_gain_cmd cmd; - data->radio_write = 1; - - memset(&cmd, 0, sizeof(cmd)); - cmd.hdr.op_code = IWL_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]; - ret = iwl_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD, - sizeof(cmd), &cmd); - if (ret) - 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; -} - -static void iwl4965_rts_tx_cmd_flag(struct ieee80211_tx_info *info, - __le32 *tx_flags) -{ - if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_RTS_CTS) { - *tx_flags |= TX_CMD_FLG_RTS_MSK; - *tx_flags &= ~TX_CMD_FLG_CTS_MSK; - } else if (info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) { - *tx_flags &= ~TX_CMD_FLG_RTS_MSK; - *tx_flags |= TX_CMD_FLG_CTS_MSK; - } -} - -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 associated, we must reconfigure the - * TX power since frames can be sent on non-radar channels while - * not associated */ - iwl4965_send_tx_power(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_direct32(priv, HBUS_TARG_WRPTR, - (index & 0xff) | (txq_id << 8)); - iwl_write_prph(priv, IWL49_SCD_QUEUE_RDPTR(txq_id), index); -} - -/** - * iwl4965_tx_queue_set_status - (optionally) start Tx/Cmd queue - * @tx_fifo_id: Tx DMA/FIFO channel (range 0-7) that the queue will feed - * @scd_retry: (1) Indicates queue will be used in aggregation mode - * - * NOTE: 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; - - /* Find out whether to activate Tx queue */ - int active = test_bit(txq_id, &priv->txq_ctx_active_msk) ? 1 : 0; - - /* Set up and activate */ - iwl_write_prph(priv, IWL49_SCD_QUEUE_STATUS_BITS(txq_id), - (active << IWL49_SCD_QUEUE_STTS_REG_POS_ACTIVE) | - (tx_fifo_id << IWL49_SCD_QUEUE_STTS_REG_POS_TXF) | - (scd_retry << IWL49_SCD_QUEUE_STTS_REG_POS_WSL) | - (scd_retry << IWL49_SCD_QUEUE_STTS_REG_POS_SCD_ACK) | - IWL49_SCD_QUEUE_STTS_REG_MSK); - - txq->sched_retry = scd_retry; - - IWL_DEBUG_INFO("%s %s Queue %d on AC %d\n", - active ? "Activate" : "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, - IWL49_CMD_FIFO_NUM, - IWL_TX_FIFO_HCCA_1, - IWL_TX_FIFO_HCCA_2 -}; - -static int iwl4965_alive_notify(struct iwl_priv *priv) -{ - u32 a; - unsigned long flags; - int ret; - int i, chan; - u32 reg_val; - - spin_lock_irqsave(&priv->lock, flags); - - ret = iwl_grab_nic_access(priv); - if (ret) { - spin_unlock_irqrestore(&priv->lock, flags); - return ret; - } - - /* Clear 4965's internal Tx Scheduler data base */ - priv->scd_base_addr = iwl_read_prph(priv, IWL49_SCD_SRAM_BASE_ADDR); - a = priv->scd_base_addr + IWL49_SCD_CONTEXT_DATA_OFFSET; - for (; a < priv->scd_base_addr + IWL49_SCD_TX_STTS_BITMAP_OFFSET; a += 4) - iwl_write_targ_mem(priv, a, 0); - for (; a < priv->scd_base_addr + IWL49_SCD_TRANSLATE_TBL_OFFSET; a += 4) - iwl_write_targ_mem(priv, a, 0); - for (; a < sizeof(u16) * priv->hw_params.max_txq_num; a += 4) - iwl_write_targ_mem(priv, a, 0); - - /* Tel 4965 where to find Tx byte count tables */ - iwl_write_prph(priv, IWL49_SCD_DRAM_BASE_ADDR, - priv->scd_bc_tbls.dma >> 10); - - /* Enable DMA channel */ - for (chan = 0; chan < FH49_TCSR_CHNL_NUM ; chan++) - iwl_write_direct32(priv, FH_TCSR_CHNL_TX_CONFIG_REG(chan), - FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE | - FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE); - - /* Update FH chicken bits */ - reg_val = iwl_read_direct32(priv, FH_TX_CHICKEN_BITS_REG); - iwl_write_direct32(priv, FH_TX_CHICKEN_BITS_REG, - reg_val | FH_TX_CHICKEN_BITS_SCD_AUTO_RETRY_EN); - - /* Disable chain mode for all queues */ - iwl_write_prph(priv, IWL49_SCD_QUEUECHAIN_SEL, 0); - - /* Initialize each Tx queue (including the command queue) */ - for (i = 0; i < priv->hw_params.max_txq_num; i++) { - - /* TFD circular buffer read/write indexes */ - iwl_write_prph(priv, IWL49_SCD_QUEUE_RDPTR(i), 0); - iwl_write_direct32(priv, HBUS_TARG_WRPTR, 0 | (i << 8)); - - /* Max Tx Window size for Scheduler-ACK mode */ - iwl_write_targ_mem(priv, priv->scd_base_addr + - IWL49_SCD_CONTEXT_QUEUE_OFFSET(i), - (SCD_WIN_SIZE << - IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_POS) & - IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_MSK); - - /* Frame limit */ - iwl_write_targ_mem(priv, priv->scd_base_addr + - IWL49_SCD_CONTEXT_QUEUE_OFFSET(i) + - sizeof(u32), - (SCD_FRAME_LIMIT << - IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS) & - IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK); - - } - iwl_write_prph(priv, IWL49_SCD_INTERRUPT_MASK, - (1 << priv->hw_params.max_txq_num) - 1); - - /* Activate all Tx DMA/FIFO channels */ - priv->cfg->ops->lib->txq_set_sched(priv, IWL_MASK(0, 6)); - - iwl4965_set_wr_ptrs(priv, IWL_CMD_QUEUE_NUM, 0); - - /* Map each Tx/cmd queue to its corresponding fifo */ - for (i = 0; i < ARRAY_SIZE(default_queue_to_tx_fifo); i++) { - int ac = default_queue_to_tx_fifo[i]; - iwl_txq_ctx_activate(priv, i); - iwl4965_tx_queue_set_status(priv, &priv->txq[i], ac, 0); - } - - iwl_release_nic_access(priv); - spin_unlock_irqrestore(&priv->lock, flags); - - return ret; -} - -static struct iwl_sensitivity_ranges iwl4965_sensitivity = { - .min_nrg_cck = 97, - .max_nrg_cck = 0, - - .auto_corr_min_ofdm = 85, - .auto_corr_min_ofdm_mrc = 170, - .auto_corr_min_ofdm_x1 = 105, - .auto_corr_min_ofdm_mrc_x1 = 220, - - .auto_corr_max_ofdm = 120, - .auto_corr_max_ofdm_mrc = 210, - .auto_corr_max_ofdm_x1 = 140, - .auto_corr_max_ofdm_mrc_x1 = 270, - - .auto_corr_min_cck = 125, - .auto_corr_max_cck = 200, - .auto_corr_min_cck_mrc = 200, - .auto_corr_max_cck_mrc = 400, - - .nrg_th_cck = 100, - .nrg_th_ofdm = 100, -}; - -/** - * iwl4965_hw_set_hw_params - * - * Called when initializing driver - */ -static int iwl4965_hw_set_hw_params(struct iwl_priv *priv) -{ - - if ((priv->cfg->mod_params->num_of_queues > IWL49_NUM_QUEUES) || - (priv->cfg->mod_params->num_of_queues < IWL_MIN_NUM_QUEUES)) { - IWL_ERROR("invalid queues_num, should be between %d and %d\n", - IWL_MIN_NUM_QUEUES, IWL49_NUM_QUEUES); - return -EINVAL; - } - - priv->hw_params.max_txq_num = priv->cfg->mod_params->num_of_queues; - priv->hw_params.dma_chnl_num = FH49_TCSR_CHNL_NUM; - priv->hw_params.scd_bc_tbls_size = - IWL49_NUM_QUEUES * sizeof(struct iwl4965_scd_bc_tbl); - priv->hw_params.max_stations = IWL4965_STATION_COUNT; - priv->hw_params.bcast_sta_id = IWL4965_BROADCAST_ID; - priv->hw_params.max_data_size = IWL49_RTC_DATA_SIZE; - priv->hw_params.max_inst_size = IWL49_RTC_INST_SIZE; - priv->hw_params.max_bsm_size = BSM_SRAM_SIZE; - priv->hw_params.fat_channel = BIT(IEEE80211_BAND_5GHZ); - - priv->hw_params.tx_chains_num = 2; - priv->hw_params.rx_chains_num = 2; - priv->hw_params.valid_tx_ant = ANT_A | ANT_B; - priv->hw_params.valid_rx_ant = ANT_A | ANT_B; - priv->hw_params.ct_kill_threshold = CELSIUS_TO_KELVIN(CT_KILL_THRESHOLD); - - priv->hw_params.sens = &iwl4965_sensitivity; - - return 0; -} - -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; -} - -/** - * iwl4965_get_voltage_compensation - Power supply voltage comp for txpower - * - * Determines power supply voltage compensation for txpower calculations. - * Returns number of 1/2-dB steps to subtract from gain table index, - * to compensate for difference between power supply voltage during - * factory measurements, vs. current power supply voltage. - * - * Voltage indication is higher for lower voltage. - * Lower voltage requires more gain (lower gain table index). - */ -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 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->calib_info->band_info[b].ch_from == 0) - continue; - - if ((channel >= priv->calib_info->band_info[b].ch_from) - && (channel <= priv->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; - } -} - -/** - * iwl4965_interpolate_chan - Interpolate factory measurements for one channel - * - * Interpolates factory measurements from the two sample channels within a - * sub-band, to apply to channel of interest. Interpolation is proportional to - * differences in channel frequencies, which is proportional to differences - * in channel number. - */ -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\n", channel); - return -1; - } - - ch_i1 = priv->calib_info->band_info[s].ch1.ch_num; - ch_i2 = priv->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->calib_info->band_info[s].ch1. - measurements[c][m]); - m2 = &(priv->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 iwl4965_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 iwl4965_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; - - /* 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->tx_power_user_lmt; - - /* Get current (RXON) channel, band, width */ - IWL_DEBUG_TXPOWER("chan %d band %d is_fat %d\n", channel, band, - is_fat); - - ch_info = iwl_get_channel_info(priv, priv->band, channel); - - if (!is_channel_valid(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->calib_info->saturation_power24; - else - saturation_power = priv->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->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 iwl4965_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; -} - -/** - * iwl4965_send_tx_power - Configure the TXPOWER level user limit - * - * Uses the active RXON for channel, band, and characteristics (fat, high) - * The power limit is taken from priv->tx_power_user_lmt. - */ -static int iwl4965_send_tx_power(struct iwl_priv *priv) -{ - struct iwl4965_txpowertable_cmd cmd = { 0 }; - int ret; - 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->band == IEEE80211_BAND_2GHZ; - - 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; - - ret = iwl4965_fill_txpower_tbl(priv, band, - le16_to_cpu(priv->active_rxon.channel), - is_fat, ctrl_chan_high, &cmd.tx_power); - if (ret) - goto out; - - ret = iwl_send_cmd_pdu(priv, REPLY_TX_PWR_TABLE_CMD, sizeof(cmd), &cmd); - -out: - return ret; -} - -static int iwl4965_send_rxon_assoc(struct iwl_priv *priv) -{ - int ret = 0; - struct iwl4965_rxon_assoc_cmd rxon_assoc; - const struct iwl_rxon_cmd *rxon1 = &priv->staging_rxon; - const struct iwl_rxon_cmd *rxon2 = &priv->active_rxon; - - if ((rxon1->flags == rxon2->flags) && - (rxon1->filter_flags == rxon2->filter_flags) && - (rxon1->cck_basic_rates == rxon2->cck_basic_rates) && - (rxon1->ofdm_ht_single_stream_basic_rates == - rxon2->ofdm_ht_single_stream_basic_rates) && - (rxon1->ofdm_ht_dual_stream_basic_rates == - rxon2->ofdm_ht_dual_stream_basic_rates) && - (rxon1->rx_chain == rxon2->rx_chain) && - (rxon1->ofdm_basic_rates == rxon2->ofdm_basic_rates)) { - IWL_DEBUG_INFO("Using current RXON_ASSOC. Not resending.\n"); - return 0; - } - - rxon_assoc.flags = priv->staging_rxon.flags; - rxon_assoc.filter_flags = priv->staging_rxon.filter_flags; - rxon_assoc.ofdm_basic_rates = priv->staging_rxon.ofdm_basic_rates; - rxon_assoc.cck_basic_rates = priv->staging_rxon.cck_basic_rates; - rxon_assoc.reserved = 0; - rxon_assoc.ofdm_ht_single_stream_basic_rates = - priv->staging_rxon.ofdm_ht_single_stream_basic_rates; - rxon_assoc.ofdm_ht_dual_stream_basic_rates = - priv->staging_rxon.ofdm_ht_dual_stream_basic_rates; - rxon_assoc.rx_chain_select_flags = priv->staging_rxon.rx_chain; - - ret = iwl_send_cmd_pdu_async(priv, REPLY_RXON_ASSOC, - sizeof(rxon_assoc), &rxon_assoc, NULL); - if (ret) - return ret; - - return ret; -} - -#ifdef IEEE80211_CONF_CHANNEL_SWITCH -static int iwl4965_hw_channel_switch(struct iwl_priv *priv, u16 channel) -{ - int rc; - u8 band = 0; - u8 is_fat = 0; - u8 ctrl_chan_high = 0; - struct iwl4965_channel_switch_cmd cmd = { 0 }; - const struct iwl_channel_info *ch_info; - - band = priv->band == IEEE80211_BAND_2GHZ; - - ch_info = iwl_get_channel_info(priv, priv->band, 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; -} -#endif - -/** - * iwl4965_txq_update_byte_cnt_tbl - Set up entry in Tx byte-count array - */ -static void iwl4965_txq_update_byte_cnt_tbl(struct iwl_priv *priv, - struct iwl_tx_queue *txq, - u16 byte_cnt) -{ - struct iwl4965_scd_bc_tbl *scd_bc_tbl = priv->scd_bc_tbls.addr; - int txq_id = txq->q.id; - int write_ptr = txq->q.write_ptr; - int len = byte_cnt + IWL_TX_CRC_SIZE + IWL_TX_DELIMITER_SIZE; - __le16 bc_ent; - - WARN_ON(len > 0xFFF || write_ptr >= TFD_QUEUE_SIZE_MAX); - - bc_ent = cpu_to_le16(len & 0xFFF); - /* Set up byte count within first 256 entries */ - scd_bc_tbl[txq_id].tfd_offset[write_ptr] = bc_ent; - - /* If within first 64 entries, duplicate at end */ - if (write_ptr < TFD_QUEUE_SIZE_BC_DUP) - scd_bc_tbl[txq_id]. - tfd_offset[TFD_QUEUE_SIZE_MAX + write_ptr] = bc_ent; -} - -/** - * 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_hw_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 - */ -static int iwl4965_hw_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 - * "initialize" 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; -} - -static void iwl4965_temperature_calib(struct iwl_priv *priv) -{ - s32 temp; - - temp = iwl4965_hw_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 (!priv->disable_tx_power_cal && - unlikely(!test_bit(STATUS_SCANNING, &priv->status)) && - iwl4965_is_temp_calib_needed(priv)) - queue_work(priv->workqueue, &priv->txpower_work); -} - -/** - * iwl4965_tx_queue_stop_scheduler - Stop queue, but keep configuration - */ -static void iwl4965_tx_queue_stop_scheduler(struct iwl_priv *priv, - u16 txq_id) -{ - /* Simply stop the queue, but don't change any configuration; - * the SCD_ACT_EN bit is the write-enable mask for the ACTIVE bit. */ - iwl_write_prph(priv, - IWL49_SCD_QUEUE_STATUS_BITS(txq_id), - (0 << IWL49_SCD_QUEUE_STTS_REG_POS_ACTIVE)| - (1 << IWL49_SCD_QUEUE_STTS_REG_POS_SCD_ACT_EN)); -} - -/** - * txq_id must be greater than IWL49_FIRST_AMPDU_QUEUE - * priv->lock must be held by the caller - */ -static int iwl4965_txq_agg_disable(struct iwl_priv *priv, u16 txq_id, - u16 ssn_idx, u8 tx_fifo) -{ - int ret = 0; - - if ((IWL49_FIRST_AMPDU_QUEUE > txq_id) || - (IWL49_FIRST_AMPDU_QUEUE + IWL49_NUM_AMPDU_QUEUES <= txq_id)) { - IWL_WARNING("queue number out of range: %d, must be %d to %d\n", - txq_id, IWL49_FIRST_AMPDU_QUEUE, - IWL49_FIRST_AMPDU_QUEUE + IWL49_NUM_AMPDU_QUEUES - 1); - return -EINVAL; - } - - ret = iwl_grab_nic_access(priv); - if (ret) - return ret; - - iwl4965_tx_queue_stop_scheduler(priv, txq_id); - - iwl_clear_bits_prph(priv, IWL49_SCD_QUEUECHAIN_SEL, (1 << txq_id)); - - priv->txq[txq_id].q.read_ptr = (ssn_idx & 0xff); - priv->txq[txq_id].q.write_ptr = (ssn_idx & 0xff); - /* supposes that ssn_idx is valid (!= 0xFFF) */ - iwl4965_set_wr_ptrs(priv, txq_id, ssn_idx); - - iwl_clear_bits_prph(priv, IWL49_SCD_INTERRUPT_MASK, (1 << txq_id)); - iwl_txq_ctx_deactivate(priv, txq_id); - iwl4965_tx_queue_set_status(priv, &priv->txq[txq_id], tx_fifo, 0); - - iwl_release_nic_access(priv); - - return 0; -} - -/** - * iwl4965_tx_queue_set_q2ratid - Map unique receiver/tid combination to a queue - */ -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 & IWL_SCD_QUEUE_RA_TID_MAP_RATID_MSK; - - tbl_dw_addr = priv->scd_base_addr + - IWL49_SCD_TRANSLATE_TBL_OFFSET_QUEUE(txq_id); - - tbl_dw = iwl_read_targ_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_targ_mem(priv, tbl_dw_addr, tbl_dw); - - return 0; -} - - -/** - * iwl4965_tx_queue_agg_enable - Set up & enable aggregation for selected queue - * - * NOTE: txq_id must be greater than IWL49_FIRST_AMPDU_QUEUE, - * i.e. it must be one of the higher queues used for aggregation - */ -static int iwl4965_txq_agg_enable(struct iwl_priv *priv, int txq_id, - int tx_fifo, int sta_id, int tid, u16 ssn_idx) -{ - unsigned long flags; - int ret; - u16 ra_tid; - - if ((IWL49_FIRST_AMPDU_QUEUE > txq_id) || - (IWL49_FIRST_AMPDU_QUEUE + IWL49_NUM_AMPDU_QUEUES <= txq_id)) { - IWL_WARNING("queue number out of range: %d, must be %d to %d\n", - txq_id, IWL49_FIRST_AMPDU_QUEUE, - IWL49_FIRST_AMPDU_QUEUE + IWL49_NUM_AMPDU_QUEUES - 1); - return -EINVAL; - } - - ra_tid = BUILD_RAxTID(sta_id, tid); - - /* Modify device's station table to Tx this TID */ - iwl_sta_tx_modify_enable_tid(priv, sta_id, tid); - - spin_lock_irqsave(&priv->lock, flags); - ret = iwl_grab_nic_access(priv); - if (ret) { - spin_unlock_irqrestore(&priv->lock, flags); - return ret; - } - - /* Stop this Tx queue before configuring it */ - iwl4965_tx_queue_stop_scheduler(priv, txq_id); - - /* Map receiver-address / traffic-ID to this queue */ - iwl4965_tx_queue_set_q2ratid(priv, ra_tid, txq_id); - - /* Set this queue as a chain-building queue */ - iwl_set_bits_prph(priv, IWL49_SCD_QUEUECHAIN_SEL, (1 << txq_id)); - - /* Place first TFD at index corresponding to start sequence number. - * Assumes that ssn_idx is valid (!= 0xFFF) */ - priv->txq[txq_id].q.read_ptr = (ssn_idx & 0xff); - priv->txq[txq_id].q.write_ptr = (ssn_idx & 0xff); - iwl4965_set_wr_ptrs(priv, txq_id, ssn_idx); - - /* Set up Tx window size and frame limit for this queue */ - iwl_write_targ_mem(priv, - priv->scd_base_addr + IWL49_SCD_CONTEXT_QUEUE_OFFSET(txq_id), - (SCD_WIN_SIZE << IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_POS) & - IWL49_SCD_QUEUE_CTX_REG1_WIN_SIZE_MSK); - - iwl_write_targ_mem(priv, priv->scd_base_addr + - IWL49_SCD_CONTEXT_QUEUE_OFFSET(txq_id) + sizeof(u32), - (SCD_FRAME_LIMIT << IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS) - & IWL49_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK); - - iwl_set_bits_prph(priv, IWL49_SCD_INTERRUPT_MASK, (1 << txq_id)); - - /* Set up Status area in SRAM, map to Tx DMA/FIFO, activate the queue */ - iwl4965_tx_queue_set_status(priv, &priv->txq[txq_id], tx_fifo, 1); - - iwl_release_nic_access(priv); - spin_unlock_irqrestore(&priv->lock, flags); - - return 0; -} - - -static u16 iwl4965_get_hcmd_size(u8 cmd_id, u16 len) -{ - switch (cmd_id) { - case REPLY_RXON: - return (u16) sizeof(struct iwl4965_rxon_cmd); - default: - return len; - } -} - -static u16 iwl4965_build_addsta_hcmd(const struct iwl_addsta_cmd *cmd, u8 *data) -{ - struct iwl4965_addsta_cmd *addsta = (struct iwl4965_addsta_cmd *)data; - addsta->mode = cmd->mode; - memcpy(&addsta->sta, &cmd->sta, sizeof(struct sta_id_modify)); - memcpy(&addsta->key, &cmd->key, sizeof(struct iwl4965_keyinfo)); - addsta->station_flags = cmd->station_flags; - addsta->station_flags_msk = cmd->station_flags_msk; - addsta->tid_disable_tx = cmd->tid_disable_tx; - addsta->add_immediate_ba_tid = cmd->add_immediate_ba_tid; - addsta->remove_immediate_ba_tid = cmd->remove_immediate_ba_tid; - addsta->add_immediate_ba_ssn = cmd->add_immediate_ba_ssn; - addsta->reserved1 = __constant_cpu_to_le16(0); - addsta->reserved2 = __constant_cpu_to_le32(0); - - return (u16)sizeof(struct iwl4965_addsta_cmd); -} - -static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp) -{ - return le32_to_cpup(&tx_resp->u.status + tx_resp->frame_count) & MAX_SN; -} - -/** - * iwl4965_tx_status_reply_tx - Handle Tx response for frames in aggregation queue - */ -static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv, - struct iwl_ht_agg *agg, - struct iwl4965_tx_resp *tx_resp, - int txq_id, u16 start_idx) -{ - u16 status; - struct agg_tx_status *frame_status = tx_resp->u.agg_status; - struct ieee80211_tx_info *info = NULL; - struct ieee80211_hdr *hdr = NULL; - u32 rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags); - int i, sh, idx; - u16 seq; - if (agg->wait_for_ba) - IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n"); - - agg->frame_count = tx_resp->frame_count; - agg->start_idx = start_idx; - agg->rate_n_flags = rate_n_flags; - agg->bitmap = 0; - - /* num frames attempted by Tx command */ - if (agg->frame_count == 1) { - /* Only one frame was attempted; no block-ack will arrive */ - status = le16_to_cpu(frame_status[0].status); - idx = start_idx; - - /* FIXME: code repetition */ - IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n", - agg->frame_count, agg->start_idx, idx); - - info = IEEE80211_SKB_CB(priv->txq[txq_id].txb[idx].skb[0]); - info->status.rates[0].count = tx_resp->failure_frame + 1; - info->flags &= ~IEEE80211_TX_CTL_AMPDU; - info->flags |= iwl_is_tx_success(status) ? - IEEE80211_TX_STAT_ACK : 0; - iwl_hwrate_to_tx_control(priv, rate_n_flags, info); - /* FIXME: code repetition end */ - - IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n", - status & 0xff, tx_resp->failure_frame); - IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n", rate_n_flags); - - agg->wait_for_ba = 0; - } else { - /* Two or more frames were attempted; expect block-ack */ - u64 bitmap = 0; - int start = agg->start_idx; - - /* Construct bit-map of pending frames within Tx window */ - for (i = 0; i < agg->frame_count; i++) { - u16 sc; - status = le16_to_cpu(frame_status[i].status); - seq = le16_to_cpu(frame_status[i].sequence); - idx = SEQ_TO_INDEX(seq); - txq_id = SEQ_TO_QUEUE(seq); - - if (status & (AGG_TX_STATE_FEW_BYTES_MSK | - AGG_TX_STATE_ABORT_MSK)) - continue; - - IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n", - agg->frame_count, txq_id, idx); - - hdr = iwl_tx_queue_get_hdr(priv, txq_id, idx); - - sc = le16_to_cpu(hdr->seq_ctrl); - if (idx != (SEQ_TO_SN(sc) & 0xff)) { - IWL_ERROR("BUG_ON idx doesn't match seq control" - " idx=%d, seq_idx=%d, seq=%d\n", - idx, SEQ_TO_SN(sc), - hdr->seq_ctrl); - return -1; - } - - IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n", - i, idx, SEQ_TO_SN(sc)); - - sh = idx - start; - if (sh > 64) { - sh = (start - idx) + 0xff; - bitmap = bitmap << sh; - sh = 0; - start = idx; - } else if (sh < -64) - sh = 0xff - (start - idx); - else if (sh < 0) { - sh = start - idx; - start = idx; - bitmap = bitmap << sh; - sh = 0; - } - bitmap |= 1ULL << sh; - IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%llx\n", - start, (unsigned long long)bitmap); - } - - agg->bitmap = bitmap; - agg->start_idx = start; - IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n", - agg->frame_count, agg->start_idx, - (unsigned long long)agg->bitmap); - - if (bitmap) - agg->wait_for_ba = 1; - } - return 0; -} - -/** - * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response - */ -static void iwl4965_rx_reply_tx(struct iwl_priv *priv, - struct iwl_rx_mem_buffer *rxb) -{ - struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data; - u16 sequence = le16_to_cpu(pkt->hdr.sequence); - int txq_id = SEQ_TO_QUEUE(sequence); - int index = SEQ_TO_INDEX(sequence); - struct iwl_tx_queue *txq = &priv->txq[txq_id]; - struct ieee80211_hdr *hdr; - struct ieee80211_tx_info *info; - struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0]; - u32 status = le32_to_cpu(tx_resp->u.status); - int tid = MAX_TID_COUNT; - int sta_id; - int freed; - u8 *qc = NULL; - - if ((index >= txq->q.n_bd) || (iwl_queue_used(&txq->q, index) == 0)) { - IWL_ERROR("Read index for DMA queue txq_id (%d) index %d " - "is out of range [0-%d] %d %d\n", txq_id, - index, txq->q.n_bd, txq->q.write_ptr, - txq->q.read_ptr); - return; - } - - info = IEEE80211_SKB_CB(txq->txb[txq->q.read_ptr].skb[0]); - memset(&info->status, 0, sizeof(info->status)); - - hdr = iwl_tx_queue_get_hdr(priv, txq_id, index); - if (ieee80211_is_data_qos(hdr->frame_control)) { - qc = ieee80211_get_qos_ctl(hdr); - tid = qc[0] & 0xf; - } - - sta_id = iwl_get_ra_sta_id(priv, hdr); - if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) { - IWL_ERROR("Station not known\n"); - return; - } - - if (txq->sched_retry) { - const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp); - struct iwl_ht_agg *agg = NULL; - - WARN_ON(!qc); - - agg = &priv->stations[sta_id].tid[tid].agg; - - iwl4965_tx_status_reply_tx(priv, agg, tx_resp, txq_id, index); - - /* check if BAR is needed */ - if ((tx_resp->frame_count == 1) && !iwl_is_tx_success(status)) - info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK; - - if (txq->q.read_ptr != (scd_ssn & 0xff)) { - index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd); - IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn " - "%d index %d\n", scd_ssn , index); - freed = iwl_tx_queue_reclaim(priv, txq_id, index); - priv->stations[sta_id].tid[tid].tfds_in_queue -= freed; - - if (priv->mac80211_registered && - (iwl_queue_space(&txq->q) > txq->q.low_mark) && - (agg->state != IWL_EMPTYING_HW_QUEUE_DELBA)) { - if (agg->state == IWL_AGG_OFF) - ieee80211_wake_queue(priv->hw, txq_id); - else - ieee80211_wake_queue(priv->hw, - txq->swq_id); - } - } - } else { - info->status.rates[0].count = tx_resp->failure_frame + 1; - info->flags |= iwl_is_tx_success(status) ? - IEEE80211_TX_STAT_ACK : 0; - iwl_hwrate_to_tx_control(priv, - le32_to_cpu(tx_resp->rate_n_flags), - info); - - IWL_DEBUG_TX_REPLY("TXQ %d status %s (0x%08x) " - "rate_n_flags 0x%x retries %d\n", - txq_id, - iwl_get_tx_fail_reason(status), status, - le32_to_cpu(tx_resp->rate_n_flags), - tx_resp->failure_frame); - - freed = iwl_tx_queue_reclaim(priv, txq_id, index); - if (qc && likely(sta_id != IWL_INVALID_STATION)) - priv->stations[sta_id].tid[tid].tfds_in_queue -= freed; - - if (priv->mac80211_registered && - (iwl_queue_space(&txq->q) > txq->q.low_mark)) - ieee80211_wake_queue(priv->hw, txq_id); - } - - if (qc && likely(sta_id != IWL_INVALID_STATION)) - iwl_txq_check_empty(priv, sta_id, tid, txq_id); - - if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK)) - IWL_ERROR("TODO: Implement Tx ABORT REQUIRED!!!\n"); -} - -static int iwl4965_calc_rssi(struct iwl_priv *priv, - struct iwl_rx_phy_res *rx_resp) -{ - /* data from PHY/DSP regarding signal strength, etc., - * contents are always there, not configurable by host. */ - struct iwl4965_rx_non_cfg_phy *ncphy = - (struct iwl4965_rx_non_cfg_phy *)rx_resp->non_cfg_phy_buf; - u32 agc = (le16_to_cpu(ncphy->agc_info) & IWL49_AGC_DB_MASK) - >> IWL49_AGC_DB_POS; - - u32 valid_antennae = - (le16_to_cpu(rx_resp->phy_flags) & IWL49_RX_PHY_FLAGS_ANTENNAE_MASK) - >> IWL49_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; -} - - -/* Set up 4965-specific Rx frame reply handlers */ -static void iwl4965_rx_handler_setup(struct iwl_priv *priv) -{ - /* Legacy Rx frames */ - priv->rx_handlers[REPLY_RX] = iwl_rx_reply_rx; - /* Tx response */ - priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx; -} - -static void iwl4965_setup_deferred_work(struct iwl_priv *priv) -{ - INIT_WORK(&priv->txpower_work, iwl4965_bg_txpower_work); -} - -static void iwl4965_cancel_deferred_work(struct iwl_priv *priv) -{ - cancel_work_sync(&priv->txpower_work); -} - - -static struct iwl_hcmd_ops iwl4965_hcmd = { - .rxon_assoc = iwl4965_send_rxon_assoc, -}; - -static struct iwl_hcmd_utils_ops iwl4965_hcmd_utils = { - .get_hcmd_size = iwl4965_get_hcmd_size, - .build_addsta_hcmd = iwl4965_build_addsta_hcmd, - .chain_noise_reset = iwl4965_chain_noise_reset, - .gain_computation = iwl4965_gain_computation, - .rts_tx_cmd_flag = iwl4965_rts_tx_cmd_flag, - .calc_rssi = iwl4965_calc_rssi, -}; - -static struct iwl_lib_ops iwl4965_lib = { - .set_hw_params = iwl4965_hw_set_hw_params, - .txq_update_byte_cnt_tbl = iwl4965_txq_update_byte_cnt_tbl, - .txq_set_sched = iwl4965_txq_set_sched, - .txq_agg_enable = iwl4965_txq_agg_enable, - .txq_agg_disable = iwl4965_txq_agg_disable, - .rx_handler_setup = iwl4965_rx_handler_setup, - .setup_deferred_work = iwl4965_setup_deferred_work, - .cancel_deferred_work = iwl4965_cancel_deferred_work, - .is_valid_rtc_data_addr = iwl4965_hw_valid_rtc_data_addr, - .alive_notify = iwl4965_alive_notify, - .init_alive_start = iwl4965_init_alive_start, - .load_ucode = iwl4965_load_bsm, - .apm_ops = { - .init = iwl4965_apm_init, - .reset = iwl4965_apm_reset, - .stop = iwl4965_apm_stop, - .config = iwl4965_nic_config, - .set_pwr_src = iwl_set_pwr_src, - }, - .eeprom_ops = { - .regulatory_bands = { - EEPROM_REGULATORY_BAND_1_CHANNELS, - EEPROM_REGULATORY_BAND_2_CHANNELS, - EEPROM_REGULATORY_BAND_3_CHANNELS, - EEPROM_REGULATORY_BAND_4_CHANNELS, - EEPROM_REGULATORY_BAND_5_CHANNELS, - EEPROM_4965_REGULATORY_BAND_24_FAT_CHANNELS, - EEPROM_4965_REGULATORY_BAND_52_FAT_CHANNELS - }, - .verify_signature = iwlcore_eeprom_verify_signature, - .acquire_semaphore = iwlcore_eeprom_acquire_semaphore, - .release_semaphore = iwlcore_eeprom_release_semaphore, - .calib_version = iwl4965_eeprom_calib_version, - .query_addr = iwlcore_eeprom_query_addr, - }, - .send_tx_power = iwl4965_send_tx_power, - .update_chain_flags = iwl_update_chain_flags, - .temperature = iwl4965_temperature_calib, -}; - -static struct iwl_ops iwl4965_ops = { - .lib = &iwl4965_lib, - .hcmd = &iwl4965_hcmd, - .utils = &iwl4965_hcmd_utils, -}; - -struct iwl_cfg iwl4965_agn_cfg = { - .name = "4965AGN", - .fw_name_pre = IWL4965_FW_PRE, - .ucode_api_max = IWL4965_UCODE_API_MAX, - .ucode_api_min = IWL4965_UCODE_API_MIN, - .sku = IWL_SKU_A|IWL_SKU_G|IWL_SKU_N, - .eeprom_size = IWL4965_EEPROM_IMG_SIZE, - .eeprom_ver = EEPROM_4965_EEPROM_VERSION, - .eeprom_calib_ver = EEPROM_4965_TX_POWER_VERSION, - .ops = &iwl4965_ops, - .mod_params = &iwl4965_mod_params, -}; - -/* Module firmware */ -MODULE_FIRMWARE(IWL4965_MODULE_FIRMWARE(IWL4965_UCODE_API_MAX)); - -module_param_named(antenna, iwl4965_mod_params.antenna, int, 0444); -MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])"); -module_param_named(disable, iwl4965_mod_params.disable, int, 0444); -MODULE_PARM_DESC(disable, "manually disable the radio (default 0 [radio on])"); -module_param_named(swcrypto, iwl4965_mod_params.sw_crypto, int, 0444); -MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])"); -module_param_named(debug, iwl4965_mod_params.debug, uint, 0444); -MODULE_PARM_DESC(debug, "debug output mask"); -module_param_named( - disable_hw_scan, iwl4965_mod_params.disable_hw_scan, int, 0444); -MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)"); - -module_param_named(queues_num, iwl4965_mod_params.num_of_queues, int, 0444); -MODULE_PARM_DESC(queues_num, "number of hw queues."); -/* 11n */ -module_param_named(11n_disable, iwl4965_mod_params.disable_11n, int, 0444); -MODULE_PARM_DESC(11n_disable, "disable 11n functionality"); -module_param_named(amsdu_size_8K, iwl4965_mod_params.amsdu_size_8K, int, 0444); -MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size"); - -module_param_named(fw_restart4965, iwl4965_mod_params.restart_fw, int, 0444); -MODULE_PARM_DESC(fw_restart4965, "restart firmware in case of error"); |