| /****************************************************************************** |
| * |
| * 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/etherdevice.h> |
| #include <asm/unaligned.h> |
| |
| #include "iwl-4965.h" |
| #include "iwl-helpers.h" |
| |
| static void iwl4965_hw_card_show_info(struct iwl4965_priv *priv); |
| |
| #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 iwl4965_rate_info iwl4965_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 */ |
| }; |
| |
| #ifdef CONFIG_IWL4965_HT |
| |
| 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 |
| }; |
| |
| #endif /*CONFIG_IWL4965_HT */ |
| |
| 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 iwl4965_priv *priv) |
| { |
| #ifdef CONFIG_IWL4965_HT |
| if (!priv->current_ht_config.is_ht || |
| (priv->current_ht_config.supp_mcs_set[1] == 0) || |
| (priv->ps_mode == IWL_MIMO_PS_STATIC)) |
| return 1; |
| #else |
| return 1; |
| #endif /*CONFIG_IWL4965_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 iwl4965_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 iwl4965_hw_rxq_stop(struct iwl4965_priv *priv) |
| { |
| int rc; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| rc = iwl4965_grab_nic_access(priv); |
| if (rc) { |
| spin_unlock_irqrestore(&priv->lock, flags); |
| return rc; |
| } |
| |
| /* stop Rx DMA */ |
| iwl4965_write_direct32(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG, 0); |
| rc = iwl4965_poll_direct_bit(priv, FH_MEM_RSSR_RX_STATUS_REG, |
| (1 << 24), 1000); |
| if (rc < 0) |
| IWL_ERROR("Can't stop Rx DMA.\n"); |
| |
| iwl4965_release_nic_access(priv); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| return 0; |
| } |
| |
| u8 iwl4965_hw_find_station(struct iwl4965_priv *priv, const u8 *addr) |
| { |
| int i; |
| int start = 0; |
| int ret = IWL_INVALID_STATION; |
| unsigned long flags; |
| DECLARE_MAC_BUF(mac); |
| |
| 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_LIMIT("can not find STA %s total %d\n", |
| print_mac(mac, addr), priv->num_stations); |
| |
| out: |
| spin_unlock_irqrestore(&priv->sta_lock, flags); |
| return ret; |
| } |
| |
| static int iwl4965_nic_set_pwr_src(struct iwl4965_priv *priv, int pwr_max) |
| { |
| int ret; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| ret = iwl4965_grab_nic_access(priv); |
| if (ret) { |
| spin_unlock_irqrestore(&priv->lock, flags); |
| return ret; |
| } |
| |
| if (!pwr_max) { |
| u32 val; |
| |
| ret = pci_read_config_dword(priv->pci_dev, PCI_POWER_SOURCE, |
| &val); |
| |
| if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT) |
| iwl4965_set_bits_mask_prph(priv, APMG_PS_CTRL_REG, |
| APMG_PS_CTRL_VAL_PWR_SRC_VAUX, |
| ~APMG_PS_CTRL_MSK_PWR_SRC); |
| } else |
| iwl4965_set_bits_mask_prph(priv, APMG_PS_CTRL_REG, |
| APMG_PS_CTRL_VAL_PWR_SRC_VMAIN, |
| ~APMG_PS_CTRL_MSK_PWR_SRC); |
| |
| iwl4965_release_nic_access(priv); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| return ret; |
| } |
| |
| static int iwl4965_rx_init(struct iwl4965_priv *priv, struct iwl4965_rx_queue *rxq) |
| { |
| int rc; |
| unsigned long flags; |
| unsigned int rb_size; |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| rc = iwl4965_grab_nic_access(priv); |
| if (rc) { |
| spin_unlock_irqrestore(&priv->lock, flags); |
| return rc; |
| } |
| |
| if (iwl4965_param_amsdu_size_8K) |
| rb_size = FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_8K; |
| else |
| rb_size = FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_4K; |
| |
| /* Stop Rx DMA */ |
| iwl4965_write_direct32(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG, 0); |
| |
| /* Reset driver's Rx queue write index */ |
| iwl4965_write_direct32(priv, FH_RSCSR_CHNL0_RBDCB_WPTR_REG, 0); |
| |
| /* Tell device where to find RBD circular buffer in DRAM */ |
| iwl4965_write_direct32(priv, FH_RSCSR_CHNL0_RBDCB_BASE_REG, |
| rxq->dma_addr >> 8); |
| |
| /* Tell device where in DRAM to update its Rx status */ |
| iwl4965_write_direct32(priv, FH_RSCSR_CHNL0_STTS_WPTR_REG, |
| (priv->hw_setting.shared_phys + |
| offsetof(struct iwl4965_shared, val0)) >> 4); |
| |
| /* Enable Rx DMA, enable host interrupt, Rx buffer size 4k, 256 RBDs */ |
| iwl4965_write_direct32(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 | |
| rb_size | |
| /*0x10 << 4 | */ |
| (RX_QUEUE_SIZE_LOG << |
| FH_RCSR_RX_CONFIG_RBDCB_SIZE_BITSHIFT)); |
| |
| /* |
| * iwl4965_write32(priv,CSR_INT_COAL_REG,0); |
| */ |
| |
| iwl4965_release_nic_access(priv); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| return 0; |
| } |
| |
| /* Tell 4965 where to find the "keep warm" buffer */ |
| static int iwl4965_kw_init(struct iwl4965_priv *priv) |
| { |
| unsigned long flags; |
| int rc; |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| rc = iwl4965_grab_nic_access(priv); |
| if (rc) |
| goto out; |
| |
| iwl4965_write_direct32(priv, IWL_FH_KW_MEM_ADDR_REG, |
| priv->kw.dma_addr >> 4); |
| iwl4965_release_nic_access(priv); |
| out: |
| spin_unlock_irqrestore(&priv->lock, flags); |
| return rc; |
| } |
| |
| static int iwl4965_kw_alloc(struct iwl4965_priv *priv) |
| { |
| struct pci_dev *dev = priv->pci_dev; |
| struct iwl4965_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 " " : "") |
| |
| /** |
| * iwl4965_set_fat_chan_info - Copy fat channel info into driver's priv. |
| * |
| * Does not set up a command, or touch hardware. |
| */ |
| int iwl4965_set_fat_chan_info(struct iwl4965_priv *priv, |
| enum ieee80211_band band, u16 channel, |
| const struct iwl4965_eeprom_channel *eeprom_ch, |
| u8 fat_extension_channel) |
| { |
| struct iwl4965_channel_info *ch_info; |
| |
| ch_info = (struct iwl4965_channel_info *) |
| iwl4965_get_channel_info(priv, band, 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; |
| } |
| |
| /** |
| * iwl4965_kw_free - Free the "keep warm" buffer |
| */ |
| static void iwl4965_kw_free(struct iwl4965_priv *priv) |
| { |
| struct pci_dev *dev = priv->pci_dev; |
| struct iwl4965_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 iwl4965_priv *priv) |
| { |
| int rc = 0; |
| int txq_id, slots_num; |
| unsigned long flags; |
| |
| iwl4965_kw_free(priv); |
| |
| /* Free all tx/cmd queues and keep-warm buffer */ |
| iwl4965_hw_txq_ctx_free(priv); |
| |
| /* Alloc keep-warm buffer */ |
| rc = iwl4965_kw_alloc(priv); |
| if (rc) { |
| IWL_ERROR("Keep Warm allocation failed"); |
| goto error_kw; |
| } |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| |
| rc = iwl4965_grab_nic_access(priv); |
| if (unlikely(rc)) { |
| IWL_ERROR("TX reset failed"); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| goto error_reset; |
| } |
| |
| /* Turn off all Tx DMA channels */ |
| iwl4965_write_prph(priv, KDR_SCD_TXFACT, 0); |
| iwl4965_release_nic_access(priv); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| /* Tell 4965 where to find the keep-warm buffer */ |
| rc = iwl4965_kw_init(priv); |
| if (rc) { |
| IWL_ERROR("kw_init failed\n"); |
| goto error_reset; |
| } |
| |
| /* Alloc and init all (default 16) Tx queues, |
| * including the command queue (#4) */ |
| 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 = iwl4965_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: |
| iwl4965_hw_txq_ctx_free(priv); |
| error_reset: |
| iwl4965_kw_free(priv); |
| error_kw: |
| return rc; |
| } |
| |
| int iwl4965_hw_nic_init(struct iwl4965_priv *priv) |
| { |
| int rc; |
| unsigned long flags; |
| struct iwl4965_rx_queue *rxq = &priv->rxq; |
| u8 rev_id; |
| u32 val; |
| u8 val_link; |
| |
| iwl4965_power_init_handle(priv); |
| |
| /* nic_init */ |
| spin_lock_irqsave(&priv->lock, flags); |
| |
| iwl4965_set_bit(priv, CSR_GIO_CHICKEN_BITS, |
| CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER); |
| |
| iwl4965_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); |
| rc = iwl4965_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 = iwl4965_grab_nic_access(priv); |
| if (rc) { |
| spin_unlock_irqrestore(&priv->lock, flags); |
| return rc; |
| } |
| |
| iwl4965_read_prph(priv, APMG_CLK_CTRL_REG); |
| |
| iwl4965_write_prph(priv, APMG_CLK_CTRL_REG, |
| APMG_CLK_VAL_DMA_CLK_RQT | |
| APMG_CLK_VAL_BSM_CLK_RQT); |
| iwl4965_read_prph(priv, APMG_CLK_CTRL_REG); |
| |
| udelay(20); |
| |
| iwl4965_set_bits_prph(priv, APMG_PCIDEV_STT_REG, |
| APMG_PCIDEV_STT_VAL_L1_ACT_DIS); |
| |
| iwl4965_release_nic_access(priv); |
| iwl4965_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); |
| |
| 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 */ |
| |
| iwl4965_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 = iwl4965_grab_nic_access(priv); |
| if (rc < 0) { |
| spin_unlock_irqrestore(&priv->lock, flags); |
| IWL_DEBUG_INFO("Failed to init the card\n"); |
| return rc; |
| } |
| |
| iwl4965_read_prph(priv, APMG_PS_CTRL_REG); |
| iwl4965_set_bits_prph(priv, APMG_PS_CTRL_REG, |
| APMG_PS_CTRL_VAL_RESET_REQ); |
| udelay(5); |
| iwl4965_clear_bits_prph(priv, APMG_PS_CTRL_REG, |
| APMG_PS_CTRL_VAL_RESET_REQ); |
| |
| iwl4965_release_nic_access(priv); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| iwl4965_hw_card_show_info(priv); |
| |
| /* end nic_init */ |
| |
| /* Allocate the RX queue, or reset if it is already allocated */ |
| if (!rxq->bd) { |
| rc = iwl4965_rx_queue_alloc(priv); |
| if (rc) { |
| IWL_ERROR("Unable to initialize Rx queue\n"); |
| return -ENOMEM; |
| } |
| } else |
| iwl4965_rx_queue_reset(priv, rxq); |
| |
| iwl4965_rx_replenish(priv); |
| |
| iwl4965_rx_init(priv, rxq); |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| |
| rxq->need_update = 1; |
| iwl4965_rx_queue_update_write_ptr(priv, rxq); |
| |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| /* Allocate and init all Tx and Command queues */ |
| 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 iwl4965_hw_nic_stop_master(struct iwl4965_priv *priv) |
| { |
| int rc = 0; |
| u32 reg_val; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| |
| /* set stop master bit */ |
| iwl4965_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER); |
| |
| reg_val = iwl4965_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 = iwl4965_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; |
| } |
| |
| /** |
| * iwl4965_hw_txq_ctx_stop - Stop all Tx DMA channels, free Tx queue memory |
| */ |
| void iwl4965_hw_txq_ctx_stop(struct iwl4965_priv *priv) |
| { |
| |
| int txq_id; |
| unsigned long flags; |
| |
| /* Stop each Tx DMA channel, and wait for it to be idle */ |
| for (txq_id = 0; txq_id < priv->hw_setting.max_txq_num; txq_id++) { |
| spin_lock_irqsave(&priv->lock, flags); |
| if (iwl4965_grab_nic_access(priv)) { |
| spin_unlock_irqrestore(&priv->lock, flags); |
| continue; |
| } |
| |
| iwl4965_write_direct32(priv, |
| IWL_FH_TCSR_CHNL_TX_CONFIG_REG(txq_id), |
| 0x0); |
| iwl4965_poll_direct_bit(priv, IWL_FH_TSSR_TX_STATUS_REG, |
| IWL_FH_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE |
| (txq_id), 200); |
| iwl4965_release_nic_access(priv); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| } |
| |
| /* Deallocate memory for all Tx queues */ |
| iwl4965_hw_txq_ctx_free(priv); |
| } |
| |
| int iwl4965_hw_nic_reset(struct iwl4965_priv *priv) |
| { |
| int rc = 0; |
| unsigned long flags; |
| |
| iwl4965_hw_nic_stop_master(priv); |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| |
| iwl4965_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET); |
| |
| udelay(10); |
| |
| iwl4965_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); |
| rc = iwl4965_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 = iwl4965_grab_nic_access(priv); |
| if (!rc) { |
| iwl4965_write_prph(priv, APMG_CLK_EN_REG, |
| APMG_CLK_VAL_DMA_CLK_RQT | |
| APMG_CLK_VAL_BSM_CLK_RQT); |
| |
| udelay(10); |
| |
| iwl4965_set_bits_prph(priv, APMG_PCIDEV_STT_REG, |
| APMG_PCIDEV_STT_VAL_L1_ACT_DIS); |
| |
| iwl4965_release_nic_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 iwl4965_priv *priv = (struct iwl4965_priv *)data; |
| |
| queue_work(priv->workqueue, &priv->statistics_work); |
| } |
| |
| /** |
| * iwl4965_bg_statistics_work - Send the statistics request to the hardware. |
| * |
| * This is queued by iwl4965_bg_statistics_periodic. |
| */ |
| static void iwl4965_bg_statistics_work(struct work_struct *work) |
| { |
| struct iwl4965_priv *priv = container_of(work, struct iwl4965_priv, |
| statistics_work); |
| |
| if (test_bit(STATUS_EXIT_PENDING, &priv->status)) |
| return; |
| |
| mutex_lock(&priv->mutex); |
| iwl4965_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 iwl4965_priv *priv) |
| { |
| struct iwl4965_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); |
| iwl4965_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 = iwl4965_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_IWL4965_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 iwl4965_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 iwl4965_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 iwl4965_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 iwl4965_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 iwl4965_sensitivity_callback(struct iwl4965_priv *priv, |
| struct iwl4965_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 iwl4965_priv *priv, u8 flags) |
| { |
| int rc = 0; |
| struct iwl4965_sensitivity_cmd cmd ; |
| struct iwl4965_sensitivity_data *data = NULL; |
| struct iwl4965_host_cmd cmd_out = { |
| .id = SENSITIVITY_CMD, |
| .len = sizeof(struct iwl4965_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); |
| |
| /* Update uCode's "work" table, and copy it to DSP */ |
| cmd.control = SENSITIVITY_CMD_CONTROL_WORK_TABLE; |
| |
| if (flags & CMD_ASYNC) |
| cmd_out.meta.u.callback = iwl4965_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 = iwl4965_send_cmd(priv, &cmd_out); |
| if (!rc) { |
| IWL_DEBUG_CALIB("SENSITIVITY_CMD succeeded\n"); |
| return rc; |
| } |
| |
| return 0; |
| } |
| |
| void iwl4965_init_sensitivity(struct iwl4965_priv *priv, u8 flags, u8 force) |
| { |
| int rc = 0; |
| int i; |
| struct iwl4965_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 iwl4965_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 iwl4965_priv *priv) |
| { |
| struct iwl4965_chain_noise_data *data = NULL; |
| int rc = 0; |
| |
| data = &(priv->chain_noise_data); |
| if ((data->state == IWL_CHAIN_NOISE_ALIVE) && iwl4965_is_associated(priv)) { |
| struct iwl4965_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 = iwl4965_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 iwl4965_priv *priv, |
| struct iwl4965_notif_statistics *stat_resp) |
| { |
| struct iwl4965_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 iwl4965_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 = iwl4965_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 iwl4965_priv *priv, |
| struct iwl4965_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 iwl4965_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 (!iwl4965_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 iwl4965_priv *priv = container_of(work, struct iwl4965_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_IWL4965_SENSITIVITY*/ |
| |
| static void iwl4965_bg_txpower_work(struct work_struct *work) |
| { |
| struct iwl4965_priv *priv = container_of(work, struct iwl4965_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 */ |
| iwl4965_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 iwl4965_priv *priv, int txq_id, u32 index) |
| { |
| iwl4965_write_direct32(priv, HBUS_TARG_WRPTR, |
| (index & 0xff) | (txq_id << 8)); |
| iwl4965_write_prph(priv, KDR_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 iwl4965_priv *priv, |
| struct iwl4965_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 */ |
| iwl4965_write_prph(priv, KDR_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 ? "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, |
| IWL_CMD_FIFO_NUM, |
| IWL_TX_FIFO_HCCA_1, |
| IWL_TX_FIFO_HCCA_2 |
| }; |
| |
| static inline void iwl4965_txq_ctx_activate(struct iwl4965_priv *priv, int txq_id) |
| { |
| set_bit(txq_id, &priv->txq_ctx_active_msk); |
| } |
| |
| static inline void iwl4965_txq_ctx_deactivate(struct iwl4965_priv *priv, int txq_id) |
| { |
| clear_bit(txq_id, &priv->txq_ctx_active_msk); |
| } |
| |
| int iwl4965_alive_notify(struct iwl4965_priv *priv) |
| { |
| u32 a; |
| int i = 0; |
| unsigned long flags; |
| int rc; |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| |
| #ifdef CONFIG_IWL4965_SENSITIVITY |
| memset(&(priv->sensitivity_data), 0, |
| sizeof(struct iwl4965_sensitivity_data)); |
| memset(&(priv->chain_noise_data), 0, |
| sizeof(struct iwl4965_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_IWL4965_SENSITIVITY*/ |
| rc = iwl4965_grab_nic_access(priv); |
| if (rc) { |
| spin_unlock_irqrestore(&priv->lock, flags); |
| return rc; |
| } |
| |
| /* Clear 4965's internal Tx Scheduler data base */ |
| priv->scd_base_addr = iwl4965_read_prph(priv, KDR_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) |
| iwl4965_write_targ_mem(priv, a, 0); |
| for (; a < priv->scd_base_addr + SCD_TRANSLATE_TBL_OFFSET; a += 4) |
| iwl4965_write_targ_mem(priv, a, 0); |
| for (; a < sizeof(u16) * priv->hw_setting.max_txq_num; a += 4) |
| iwl4965_write_targ_mem(priv, a, 0); |
| |
| /* Tel 4965 where to find Tx byte count tables */ |
| iwl4965_write_prph(priv, KDR_SCD_DRAM_BASE_ADDR, |
| (priv->hw_setting.shared_phys + |
| offsetof(struct iwl4965_shared, queues_byte_cnt_tbls)) >> 10); |
| |
| /* Disable chain mode for all queues */ |
| iwl4965_write_prph(priv, KDR_SCD_QUEUECHAIN_SEL, 0); |
| |
| /* Initialize each Tx queue (including the command queue) */ |
| for (i = 0; i < priv->hw_setting.max_txq_num; i++) { |
| |
| /* TFD circular buffer read/write indexes */ |
| iwl4965_write_prph(priv, KDR_SCD_QUEUE_RDPTR(i), 0); |
| iwl4965_write_direct32(priv, HBUS_TARG_WRPTR, 0 | (i << 8)); |
| |
| /* Max Tx Window size for Scheduler-ACK mode */ |
| iwl4965_write_targ_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); |
| |
| /* Frame limit */ |
| iwl4965_write_targ_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); |
| |
| } |
| iwl4965_write_prph(priv, KDR_SCD_INTERRUPT_MASK, |
| (1 << priv->hw_setting.max_txq_num) - 1); |
| |
| /* Activate all Tx DMA/FIFO channels */ |
| iwl4965_write_prph(priv, KDR_SCD_TXFACT, |
| SCD_TXFACT_REG_TXFIFO_MASK(0, 7)); |
| |
| 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]; |
| iwl4965_txq_ctx_activate(priv, i); |
| iwl4965_tx_queue_set_status(priv, &priv->txq[i], ac, 0); |
| } |
| |
| iwl4965_release_nic_access(priv); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| return 0; |
| } |
| |
| /** |
| * iwl4965_hw_set_hw_setting |
| * |
| * Called when initializing driver |
| */ |
| int iwl4965_hw_set_hw_setting(struct iwl4965_priv *priv) |
| { |
| /* Allocate area for Tx byte count tables and Rx queue status */ |
| priv->hw_setting.shared_virt = |
| pci_alloc_consistent(priv->pci_dev, |
| sizeof(struct iwl4965_shared), |
| &priv->hw_setting.shared_phys); |
| |
| if (!priv->hw_setting.shared_virt) |
| return -1; |
| |
| memset(priv->hw_setting.shared_virt, 0, sizeof(struct iwl4965_shared)); |
| |
| priv->hw_setting.max_txq_num = iwl4965_param_queues_num; |
| priv->hw_setting.ac_queue_count = AC_NUM; |
| priv->hw_setting.tx_cmd_len = sizeof(struct iwl4965_tx_cmd); |
| priv->hw_setting.max_rxq_size = RX_QUEUE_SIZE; |
| priv->hw_setting.max_rxq_log = RX_QUEUE_SIZE_LOG; |
| if (iwl4965_param_amsdu_size_8K) |
| priv->hw_setting.rx_buf_size = IWL_RX_BUF_SIZE_8K; |
| else |
| priv->hw_setting.rx_buf_size = IWL_RX_BUF_SIZE_4K; |
| priv->hw_setting.max_pkt_size = priv->hw_setting.rx_buf_size - 256; |
| priv->hw_setting.max_stations = IWL4965_STATION_COUNT; |
| priv->hw_setting.bcast_sta_id = IWL4965_BROADCAST_ID; |
| return 0; |
| } |
| |
| /** |
| * iwl4965_hw_txq_ctx_free - Free TXQ Context |
| * |
| * Destroy all TX DMA queues and structures |
| */ |
| void iwl4965_hw_txq_ctx_free(struct iwl4965_priv *priv) |
| { |
| int txq_id; |
| |
| /* Tx queues */ |
| for (txq_id = 0; txq_id < priv->hw_setting.max_txq_num; txq_id++) |
| iwl4965_tx_queue_free(priv, &priv->txq[txq_id]); |
| |
| /* Keep-warm buffer */ |
| iwl4965_kw_free(priv); |
| } |
| |
| /** |
| * iwl4965_hw_txq_free_tfd - Free all chunks referenced by TFD [txq->q.read_ptr] |
| * |
| * Does NOT advance any TFD circular buffer read/write indexes |
| * Does NOT free the TFD itself (which is within circular buffer) |
| */ |
| int iwl4965_hw_txq_free_tfd(struct iwl4965_priv *priv, struct iwl4965_tx_queue *txq) |
| { |
| struct iwl4965_tfd_frame *bd_tmp = (struct iwl4965_tfd_frame *)&txq->bd[0]; |
| struct iwl4965_tfd_frame *bd = &bd_tmp[txq->q.read_ptr]; |
| struct pci_dev *dev = priv->pci_dev; |
| int i; |
| int counter = 0; |
| int index, is_odd; |
| |
| /* Host command buffers stay mapped in memory, nothing to clean */ |
| if (txq->q.id == IWL_CMD_QUEUE_NUM) |
| return 0; |
| |
| /* Sanity check on number of chunks */ |
| 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. |
| * TFD info for odd chunks is different format than for even chunks. */ |
| 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); |
| |
| /* Free SKB, if any, for this chunk */ |
| if (txq->txb[txq->q.read_ptr].skb[i]) { |
| struct sk_buff *skb = txq->txb[txq->q.read_ptr].skb[i]; |
| |
| dev_kfree_skb(skb); |
| txq->txb[txq->q.read_ptr].skb[i] = NULL; |
| } |
| } |
| return 0; |
| } |
| |
| int iwl4965_hw_reg_set_txpower(struct iwl4965_priv *priv, s8 power) |
| { |
| IWL_ERROR("TODO: Implement iwl4965_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; |
| } |
| |
| /** |
| * 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 const struct iwl4965_channel_info * |
| iwl4965_get_channel_txpower_info(struct iwl4965_priv *priv, |
| enum ieee80211_band band, u16 channel) |
| { |
| const struct iwl4965_channel_info *ch_info; |
| |
| ch_info = iwl4965_get_channel_info(priv, band, 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 iwl4965_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; |
| } |
| } |
| |
| /** |
| * 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 iwl4965_priv *priv, u32 channel, |
| struct iwl4965_eeprom_calib_ch_info *chan_info) |
| { |
| s32 s = -1; |
| u32 c; |
| u32 m; |
| const struct iwl4965_eeprom_calib_measure *m1; |
| const struct iwl4965_eeprom_calib_measure *m2; |
| struct iwl4965_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 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 iwl4965_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 iwl4965_channel_info *ch_info = NULL; |
| struct iwl4965_eeprom_calib_ch_info ch_eeprom_info; |
| const struct iwl4965_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->band, 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 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_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 iwl4965_hw_reg_send_txpower(struct iwl4965_priv *priv) |
| { |
| struct iwl4965_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->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; |
| |
| 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 = iwl4965_send_cmd_pdu(priv, REPLY_TX_PWR_TABLE_CMD, sizeof(cmd), &cmd); |
| return rc; |
| } |
| |
| int iwl4965_hw_channel_switch(struct iwl4965_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 iwl4965_channel_info *ch_info; |
| |
| band = priv->band == IEEE80211_BAND_2GHZ; |
| |
| ch_info = iwl4965_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 = iwl4965_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 iwl4965_hw_build_tx_cmd_rate(struct iwl4965_priv *priv, |
| struct iwl4965_cmd *cmd, |
| struct ieee80211_tx_control *ctrl, |
| struct ieee80211_hdr *hdr, int sta_id, |
| int is_hcca) |
| { |
| struct iwl4965_tx_cmd *tx = &cmd->cmd.tx; |
| u8 rts_retry_limit = 0; |
| u8 data_retry_limit = 0; |
| u16 fc = le16_to_cpu(hdr->frame_control); |
| u8 rate_plcp; |
| u16 rate_flags = 0; |
| int rate_idx = min(ctrl->tx_rate->hw_value & 0xffff, IWL_RATE_COUNT - 1); |
| |
| rate_plcp = iwl4965_rates[rate_idx].plcp; |
| |
| rts_retry_limit = (is_hcca) ? |
| RTS_HCCA_RETRY_LIMIT : RTS_DFAULT_RETRY_LIMIT; |
| |
| if ((rate_idx >= IWL_FIRST_CCK_RATE) && (rate_idx <= IWL_LAST_CCK_RATE)) |
| rate_flags |= RATE_MCS_CCK_MSK; |
| |
| |
| if (ieee80211_is_probe_response(fc)) { |
| data_retry_limit = 3; |
| if (data_retry_limit < rts_retry_limit) |
| rts_retry_limit = data_retry_limit; |
| } else |
| data_retry_limit = IWL_DEFAULT_TX_RETRY; |
| |
| if (priv->data_retry_limit != -1) |
| data_retry_limit = priv->data_retry_limit; |
| |
| |
| if (ieee80211_is_data(fc)) { |
| tx->initial_rate_index = 0; |
| tx->tx_flags |= TX_CMD_FLG_STA_RATE_MSK; |
| } else { |
| switch (fc & IEEE80211_FCTL_STYPE) { |
| case IEEE80211_STYPE_AUTH: |
| case IEEE80211_STYPE_DEAUTH: |
| case IEEE80211_STYPE_ASSOC_REQ: |
| case IEEE80211_STYPE_REASSOC_REQ: |
| if (tx->tx_flags & TX_CMD_FLG_RTS_MSK) { |
| tx->tx_flags &= ~TX_CMD_FLG_RTS_MSK; |
| tx->tx_flags |= TX_CMD_FLG_CTS_MSK; |
| } |
| break; |
| default: |
| break; |
| } |
| |
| /* Alternate between antenna A and B for successive frames */ |
| if (priv->use_ant_b_for_management_frame) { |
| priv->use_ant_b_for_management_frame = 0; |
| rate_flags |= RATE_MCS_ANT_B_MSK; |
| } else { |
| priv->use_ant_b_for_management_frame = 1; |
| rate_flags |= RATE_MCS_ANT_A_MSK; |
| } |
| } |
| |
| tx->rts_retry_limit = rts_retry_limit; |
| tx->data_retry_limit = data_retry_limit; |
| tx->rate_n_flags = iwl4965_hw_set_rate_n_flags(rate_plcp, rate_flags); |
| } |
| |
| int iwl4965_hw_get_rx_read(struct iwl4965_priv *priv) |
| { |
| struct iwl4965_shared *shared_data = priv->hw_setting.shared_virt; |
| |
| return IWL_GET_BITS(*shared_data, rb_closed_stts_rb_num); |
| } |
| |
| int iwl4965_hw_get_temperature(struct iwl4965_priv *priv) |
| { |
| return priv->temperature; |
| } |
| |
| unsigned int iwl4965_hw_get_beacon_cmd(struct iwl4965_priv *priv, |
| struct iwl4965_frame *frame, u8 rate) |
| { |
| struct iwl4965_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 = iwl4965_fill_beacon_frame(priv, |
| tx_beacon_cmd->frame, |
| iwl4965_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 = |
| iwl4965_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK); |
| else |
| tx_beacon_cmd->tx.rate_n_flags = |
| iwl4965_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); |
| } |
| |
| /* |
| * Tell 4965 where to find circular buffer of Tx Frame Descriptors for |
| * given Tx queue, and enable the DMA channel used for that queue. |
| * |
| * 4965 supports up to 16 Tx queues in DRAM, mapped to up to 8 Tx DMA |
| * channels supported in hardware. |
| */ |
| int iwl4965_hw_tx_queue_init(struct iwl4965_priv *priv, struct iwl4965_tx_queue *txq) |
| { |
| int rc; |
| unsigned long flags; |
| int txq_id = txq->q.id; |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| rc = iwl4965_grab_nic_access(priv); |
| if (rc) { |
| spin_unlock_irqrestore(&priv->lock, flags); |
| return rc; |
| } |
| |
| /* Circular buffer (TFD queue in DRAM) physical base address */ |
| iwl4965_write_direct32(priv, FH_MEM_CBBC_QUEUE(txq_id), |
| txq->q.dma_addr >> 8); |
| |
| /* Enable DMA channel, using same id as for TFD queue */ |
| iwl4965_write_direct32( |
| 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); |
| iwl4965_release_nic_access(priv); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| return 0; |
| } |
| |
| int iwl4965_hw_txq_attach_buf_to_tfd(struct iwl4965_priv *priv, void *ptr, |
| dma_addr_t addr, u16 len) |
| { |
| int index, is_odd; |
| struct iwl4965_tfd_frame *tfd = ptr; |
| u32 num_tbs = IWL_GET_BITS(*tfd, num_tbs); |
| |
| /* Each TFD can point to a maximum 20 Tx buffers */ |
| if ((num_tbs >= MAX_NUM_OF_TBS) || (num_tbs < 0)) { |
| IWL_ERROR("Error can not send more than %d chunks\n", |
| MAX_NUM_OF_TBS); |
| return -EINVAL; |
| } |
| |
| index = num_tbs / 2; |
| is_odd = num_tbs & 0x1; |
| |
| if (!is_odd) { |
| tfd->pa[index].tb1_addr = cpu_to_le32(addr); |
| IWL_SET_BITS(tfd->pa[index], tb1_addr_hi, |
| iwl_get_dma_hi_address(addr)); |
| IWL_SET_BITS(tfd->pa[index], tb1_len, len); |
| } else { |
| IWL_SET_BITS(tfd->pa[index], tb2_addr_lo16, |
| (u32) (addr & 0xffff)); |
| IWL_SET_BITS(tfd->pa[index], tb2_addr_hi20, addr >> 16); |
| IWL_SET_BITS(tfd->pa[index], tb2_len, len); |
| } |
| |
| IWL_SET_BITS(*tfd, num_tbs, num_tbs + 1); |
| |
| return 0; |
| } |
| |
| static void iwl4965_hw_card_show_info(struct iwl4965_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 |
| |
| /** |
| * iwl4965_tx_queue_update_wr_ptr - Set up entry in Tx byte-count array |
| */ |
| int iwl4965_tx_queue_update_wr_ptr(struct iwl4965_priv *priv, |
| struct iwl4965_tx_queue *txq, u16 byte_cnt) |
| { |
| int len; |
| int txq_id = txq->q.id; |
| struct iwl4965_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; |
| |
| /* Set up byte count within first 256 entries */ |
| IWL_SET_BITS16(shared_data->queues_byte_cnt_tbls[txq_id]. |
| tfd_offset[txq->q.write_ptr], byte_cnt, len); |
| |
| /* If within first 64 entries, duplicate at end */ |
| if (txq->q.write_ptr < IWL4965_MAX_WIN_SIZE) |
| IWL_SET_BITS16(shared_data->queues_byte_cnt_tbls[txq_id]. |
| tfd_offset[IWL4965_QUEUE_SIZE + txq->q.write_ptr], |
| byte_cnt, len); |
| |
| return 0; |
| } |
| |
| /** |
| * iwl4965_set_rxon_chain - Set up Rx chain usage in "staging" RXON image |
| * |
| * Selects how many and which Rx receivers/antennas/chains to use. |
| * This should not be used for scan command ... it puts data in wrong place. |
| */ |
| void iwl4965_set_rxon_chain(struct iwl4965_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); |
| } |
| |
| /** |
| * 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 iwl4965_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 iwl4965_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 iwl4965_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 iwl4965_hw_rx_statistics(struct iwl4965_priv *priv, struct iwl4965_rx_mem_buffer *rxb) |
| { |
| struct iwl4965_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_IWL4965_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_add_radiotap(struct iwl4965_priv *priv, |
| struct sk_buff *skb, |
| struct iwl4965_rx_phy_res *rx_start, |
| struct ieee80211_rx_status *stats, |
| u32 ampdu_status) |
| { |
| s8 signal = stats->ssi; |
| s8 noise = 0; |
| int rate = stats->rate_idx; |
| u64 tsf = stats->mactime; |
| __le16 phy_flags_hw = rx_start->phy_flags; |
| struct iwl4965_rt_rx_hdr { |
| struct ieee80211_radiotap_header rt_hdr; |
| __le64 rt_tsf; /* TSF */ |
| u8 rt_flags; /* radiotap packet flags */ |
| u8 rt_rate; /* rate in 500kb/s */ |
| __le16 rt_channelMHz; /* channel in MHz */ |
| __le16 rt_chbitmask; /* channel bitfield */ |
| s8 rt_dbmsignal; /* signal in dBm, kluged to signed */ |
| s8 rt_dbmnoise; |
| u8 rt_antenna; /* antenna number */ |
| } __attribute__ ((packed)) *iwl4965_rt; |
| |
| /* TODO: We won't have enough headroom for HT frames. Fix it later. */ |
| if (skb_headroom(skb) < sizeof(*iwl4965_rt)) { |
| if (net_ratelimit()) |
| printk(KERN_ERR "not enough headroom [%d] for " |
| "radiotap head [%zd]\n", |
| skb_headroom(skb), sizeof(*iwl4965_rt)); |
| return; |
| } |
| |
| /* put radiotap header in front of 802.11 header and data */ |
| iwl4965_rt = (void *)skb_push(skb, sizeof(*iwl4965_rt)); |
| |
| /* initialise radiotap header */ |
| iwl4965_rt->rt_hdr.it_version = PKTHDR_RADIOTAP_VERSION; |
| iwl4965_rt->rt_hdr.it_pad = 0; |
| |
| /* total header + data */ |
| put_unaligned(cpu_to_le16(sizeof(*iwl4965_rt)), |
| &iwl4965_rt->rt_hdr.it_len); |
| |
| /* Indicate all the fields we add to the radiotap header */ |
| put_unaligned(cpu_to_le32((1 << IEEE80211_RADIOTAP_TSFT) | |
| (1 << IEEE80211_RADIOTAP_FLAGS) | |
| (1 << IEEE80211_RADIOTAP_RATE) | |
| (1 << IEEE80211_RADIOTAP_CHANNEL) | |
| (1 << IEEE80211_RADIOTAP_DBM_ANTSIGNAL) | |
| (1 << IEEE80211_RADIOTAP_DBM_ANTNOISE) | |
| (1 << IEEE80211_RADIOTAP_ANTENNA)), |
| &iwl4965_rt->rt_hdr.it_present); |
| |
| /* Zero the flags, we'll add to them as we go */ |
| iwl4965_rt->rt_flags = 0; |
| |
| put_unaligned(cpu_to_le64(tsf), &iwl4965_rt->rt_tsf); |
| |
| iwl4965_rt->rt_dbmsignal = signal; |
| iwl4965_rt->rt_dbmnoise = noise; |
| |
| /* Convert the channel frequency and set the flags */ |
| put_unaligned(cpu_to_le16(stats->freq), &iwl4965_rt->rt_channelMHz); |
| if (!(phy_flags_hw & RX_RES_PHY_FLAGS_BAND_24_MSK)) |
| put_unaligned(cpu_to_le16(IEEE80211_CHAN_OFDM | |
| IEEE80211_CHAN_5GHZ), |
| &iwl4965_rt->rt_chbitmask); |
| else if (phy_flags_hw & RX_RES_PHY_FLAGS_MOD_CCK_MSK) |
| put_unaligned(cpu_to_le16(IEEE80211_CHAN_CCK | |
| IEEE80211_CHAN_2GHZ), |
| &iwl4965_rt->rt_chbitmask); |
| else /* 802.11g */ |
| put_unaligned(cpu_to_le16(IEEE80211_CHAN_OFDM | |
| IEEE80211_CHAN_2GHZ), |
| &iwl4965_rt->rt_chbitmask); |
| |
| if (rate == -1) |
| iwl4965_rt->rt_rate = 0; |
| else |
| iwl4965_rt->rt_rate = iwl4965_rates[rate].ieee; |
| |
| /* |
| * "antenna number" |
| * |
| * It seems that the antenna field in the phy flags value |
| * is actually a bitfield. This is undefined by radiotap, |
| * it wants an actual antenna number but I always get "7" |
| * for most legacy frames I receive indicating that the |
| * same frame was received on all three RX chains. |
| * |
| * I think this field should be removed in favour of a |
| * new 802.11n radiotap field "RX chains" that is defined |
| * as a bitmask. |
| */ |
| iwl4965_rt->rt_antenna = |
| le16_to_cpu(phy_flags_hw & RX_RES_PHY_FLAGS_ANTENNA_MSK) >> 4; |
| |
| /* set the preamble flag if appropriate */ |
| if (phy_flags_hw & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK) |
| iwl4965_rt->rt_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; |
| |
| stats->flag |= RX_FLAG_RADIOTAP; |
| } |
| |
| static void iwl4965_handle_data_packet(struct iwl4965_priv *priv, int is_data, |
| int include_phy, |
| struct iwl4965_rx_mem_buffer *rxb, |
| struct ieee80211_rx_status *stats) |
| { |
| struct iwl4965_rx_packet *pkt = (struct iwl4965_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 > priv->hw_setting.max_pkt_size || len < 16) { |
| IWL_WARNING("byte count out of range [16,4K] : %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; |
| } |
| |
| stats->flag = 0; |
| hdr = (struct ieee80211_hdr *)rxb->skb->data; |
| |
| if (iwl4965_param_hwcrypto) |
| iwl4965_set_decrypted_flag(priv, rxb->skb, ampdu_status, stats); |
| |
| if (priv->add_radiotap) |
| iwl4965_add_radiotap(priv, rxb->skb, rx_start, stats, ampdu_status); |
| |
| ieee80211_rx_irqsafe(priv->hw, rxb->skb, stats); |
| priv->alloc_rxb_skb--; |
| rxb->skb = NULL; |
| #ifdef LED |
| priv->led_packets += len; |
| iwl4965_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_IWL4965_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; |
| } |
| |
| void iwl4965_init_ht_hw_capab(struct ieee80211_ht_info *ht_info, int mode) |
| { |
| ht_info->cap = 0; |
| memset(ht_info->supp_mcs_set, 0, 16); |
| |
| ht_info->ht_supported = 1; |
| |
| if (mode == MODE_IEEE80211A) { |
| ht_info->cap |= (u16)IEEE80211_HT_CAP_SUP_WIDTH; |
| ht_info->cap |= (u16)IEEE80211_HT_CAP_SGI_40; |
| ht_info->supp_mcs_set[4] = 0x01; |
| } |
| ht_info->cap |= (u16)IEEE80211_HT_CAP_GRN_FLD; |
| ht_info->cap |= (u16)IEEE80211_HT_CAP_SGI_20; |
| ht_info->cap |= (u16)(IEEE80211_HT_CAP_MIMO_PS & |
| (IWL_MIMO_PS_NONE << 2)); |
| if (iwl4965_param_amsdu_size_8K) { |
| printk(KERN_DEBUG "iwl4965 in A-MSDU 8K support mode\n"); |
| ht_info->cap |= (u16)IEEE80211_HT_CAP_MAX_AMSDU; |
| } |
| |
| ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF; |
| ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF; |
| |
| ht_info->supp_mcs_set[0] = 0xFF; |
| ht_info->supp_mcs_set[1] = 0xFF; |
| } |
| #endif /* CONFIG_IWL4965_HT */ |
| |
| static void iwl4965_sta_modify_ps_wake(struct iwl4965_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); |
| |
| iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, CMD_ASYNC); |
| } |
| |
| static void iwl4965_update_ps_mode(struct iwl4965_priv *priv, u16 ps_bit, u8 *addr) |
| { |
| /* FIXME: need locking over ps_status ??? */ |
| u8 sta_id = iwl4965_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; |
| } |
| } |
| } |
| |
| #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6) |
| |
| /* 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 iwl4965_priv *priv, |
| struct iwl4965_rx_mem_buffer *rxb) |
| { |
| struct iwl4965_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), |
| .freq = ieee80211chan2mhz(le16_to_cpu(rx_start->channel)), |
| .band = |
| (rx_start->phy_flags & RX_RES_PHY_FLAGS_BAND_24_MSK) ? |
| IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ, |
| .antenna = 0, |
| .rate_idx = iwl4965_rate_index_from_plcp( |
| le32_to_cpu(rx_start->rate_n_flags)), |
| .flag = 0, |
| }; |
| 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); |
| |
| /* 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 (iwl4965_is_associated(priv) && |
| !test_bit(STATUS_SCANNING, &priv->status)) { |
| stats.noise = priv->last_rx_noise; |
| stats.signal = iwl4965_calc_sig_qual(stats.ssi, stats.noise); |
| } else { |
| stats.noise = IWL_NOISE_MEAS_NOT_AVAILABLE; |
| stats.signal = iwl4965_calc_sig_qual(stats.ssi, 0); |
| } |
| |
| /* Reset beacon noise level if not associated. */ |
| if (!iwl4965_is_associated(priv)) |
| priv->last_rx_noise = IWL_NOISE_MEAS_NOT_AVAILABLE; |
| |
| #ifdef CONFIG_IWL4965_DEBUG |
| /* TODO: Parts of iwl4965_report_frame are broken for 4965 */ |
| if (iwl4965_debug_level & (IWL_DL_RX)) |
| /* Set "1" to report good data frames in groups of 100 */ |
| iwl4965_report_frame(priv, pkt, header, 1); |
| |
| if (iwl4965_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 = iwl4965_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: Use the new callback function from |
| * mac80211 instead of sniffing these packets. |
| */ |
| case IEEE80211_STYPE_ASSOC_RESP: |
| case IEEE80211_STYPE_REASSOC_RESP: |
| if (network_packet) { |
| #ifdef CONFIG_IWL4965_HT |
| u8 *pos = NULL; |
| struct ieee802_11_elems elems; |
| #endif /*CONFIG_IWL4965_HT */ |
| struct ieee80211_mgmt *mgnt = |
| (struct ieee80211_mgmt *)header; |
| |
| /* We have just associated, give some |
| * time for the 4-way handshake if |
| * any. Don't start scan too early. */ |
| priv->next_scan_jiffies = jiffies + |
| IWL_DELAY_NEXT_SCAN_AFTER_ASSOC; |
| |
| 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_IWL4965_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_IWL4965_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) && |
| !iwl4965_is_associated(priv)) { |
| DECLARE_MAC_BUF(mac1); |
| DECLARE_MAC_BUF(mac2); |
| DECLARE_MAC_BUF(mac3); |
| |
| IWL_DEBUG_DROP("Dropping (non network): " |
| "%s, %s, %s\n", |
| print_mac(mac1, header->addr1), |
| print_mac(mac2, header->addr2), |
| print_mac(mac3, header->addr3)); |
| return; |
| } |
| } |
| iwl4965_handle_data_packet(priv, 0, include_phy, rxb, &stats); |
| break; |
| |
| case IEEE80211_FTYPE_CTL: |
| #ifdef CONFIG_IWL4965_HT |
| 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: { |
| DECLARE_MAC_BUF(mac1); |
| DECLARE_MAC_BUF(mac2); |
| DECLARE_MAC_BUF(mac3); |
| |
| 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): " |
| "%s, %s, %s\n", |
| print_mac(mac1, header->addr1), |
| print_mac(mac2, header->addr2), |
| print_mac(mac3, header->addr3)); |
| else if (unlikely(iwl4965_is_duplicate_packet(priv, header))) |
| IWL_DEBUG_DROP("Dropping (dup): %s, %s, %s\n", |
| print_mac(mac1, header->addr1), |
| print_mac(mac2, header->addr2), |
| print_mac(mac3, 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 iwl4965_priv *priv, |
| struct iwl4965_rx_mem_buffer *rxb) |
| { |
| struct iwl4965_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 iwl4965_priv *priv, |
| struct iwl4965_rx_mem_buffer *rxb) |
| |
| { |
| #ifdef CONFIG_IWL4965_SENSITIVITY |
| struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data; |
| struct iwl4965_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_IWL4965_SENSITIVITY*/ |
| } |
| |
| #ifdef CONFIG_IWL4965_HT |
| |
| /** |
| * iwl4965_sta_modify_enable_tid_tx - Enable Tx for this TID in station table |
| */ |
| static void iwl4965_sta_modify_enable_tid_tx(struct iwl4965_priv *priv, |
| int sta_id, int tid) |
| { |
| unsigned long flags; |
| |
| /* Remove "disable" flag, to enable Tx for this TID */ |
| 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); |
| |
| iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, CMD_ASYNC); |
| } |
| |
| /** |
| * iwl4965_tx_status_reply_compressed_ba - Update tx status from block-ack |
| * |
| * Go through block-ack's bitmap of ACK'd frames, update driver's record of |
| * ACK vs. not. This gets sent to mac80211, then to rate scaling algo. |
| */ |
| static int iwl4965_tx_status_reply_compressed_ba(struct iwl4965_priv *priv, |
| struct iwl4965_ht_agg *agg, |
| struct iwl4965_compressed_ba_resp* |
| ba_resp) |
| |
| { |
| int i, sh, ack; |
| u16 seq_ctl = le16_to_cpu(ba_resp->seq_ctl); |
| u16 scd_flow = le16_to_cpu(ba_resp->scd_flow); |
| u64 bitmap; |
| int successes = 0; |
| struct ieee80211_tx_status *tx_status; |
| |
| if (unlikely(!agg->wait_for_ba)) { |
| IWL_ERROR("Received BA when not expected\n"); |
| return -EINVAL; |
| } |
| |
| /* Mark that the expected block-ack response arrived */ |
| agg->wait_for_ba = 0; |
| IWL_DEBUG_TX_REPLY("BA %d %d\n", agg->start_idx, ba_resp->seq_ctl); |
| |
| /* Calculate shift to align block-ack bits with our Tx window bits */ |
| sh = agg->start_idx - SEQ_TO_INDEX(seq_ctl>>4); |
| if (sh < 0) /* tbw something is wrong with indices */ |
| sh += 0x100; |
| |
| /* don't use 64-bit values for now */ |
| bitmap = le64_to_cpu(ba_resp->bitmap) >> 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 block-ack bitmap */ |
| bitmap &= agg->bitmap; |
| |
| /* For each frame attempted in aggregation, |
| * update driver's record of tx frame's status. */ |
| for (i = 0; i < agg->frame_count ; i++) { |
| ack = bitmap & (1 << i); |
| successes += !!ack; |
| IWL_DEBUG_TX_REPLY("%s ON i=%d idx=%d raw=%d\n", |
| ack? "ACK":"NACK", i, (agg->start_idx + i) & 0xff, |
| agg->start_idx + i); |
| } |
| |
| tx_status = &priv->txq[scd_flow].txb[agg->start_idx].status; |
| tx_status->flags = IEEE80211_TX_STATUS_ACK; |
| tx_status->flags |= IEEE80211_TX_STATUS_AMPDU; |
| tx_status->ampdu_ack_map = successes; |
| tx_status->ampdu_ack_len = agg->frame_count; |
| tx_status->control.tx_rate = agg->rate_n_flags; |
| |
| IWL_DEBUG_TX_REPLY("Bitmap %llx\n", bitmap); |
| |
| return 0; |
| } |
| |
| /** |
| * iwl4965_tx_queue_stop_scheduler - Stop queue, but keep configuration |
| */ |
| static void iwl4965_tx_queue_stop_scheduler(struct iwl4965_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. */ |
| iwl4965_write_prph(priv, |
| KDR_SCD_QUEUE_STATUS_BITS(txq_id), |
| (0 << SCD_QUEUE_STTS_REG_POS_ACTIVE)| |
| (1 << SCD_QUEUE_STTS_REG_POS_SCD_ACT_EN)); |
| } |
| |
| /** |
| * txq_id must be greater than IWL_BACK_QUEUE_FIRST_ID |
| */ |
| static int iwl4965_tx_queue_agg_disable(struct iwl4965_priv *priv, u16 txq_id, |
| u16 ssn_idx, u8 tx_fifo) |
| { |
| 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; |
| } |
| |
| iwl4965_tx_queue_stop_scheduler(priv, txq_id); |
| |
| iwl4965_clear_bits_prph(priv, KDR_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); |
| |
| iwl4965_clear_bits_prph(priv, KDR_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); |
| |
| return 0; |
| } |
| |
| int iwl4965_check_empty_hw_queue(struct iwl4965_priv *priv, int sta_id, |
| u8 tid, int txq_id) |
| { |
| struct iwl4965_queue *q = &priv->txq[txq_id].q; |
| u8 *addr = priv->stations[sta_id].sta.sta.addr; |
| struct iwl4965_tid_data *tid_data = &priv->stations[sta_id].tid[tid]; |
| |
| switch (priv->stations[sta_id].tid[tid].agg.state) { |
| case IWL_EMPTYING_HW_QUEUE_DELBA: |
| /* We are reclaiming the last packet of the */ |
| /* aggregated HW queue */ |
| if (txq_id == tid_data->agg.txq_id && |
| q->read_ptr == q->write_ptr) { |
| u16 ssn = SEQ_TO_SN(tid_data->seq_number); |
| int tx_fifo = default_tid_to_tx_fifo[tid]; |
| IWL_DEBUG_HT("HW queue empty: continue DELBA flow\n"); |
| iwl4965_tx_queue_agg_disable(priv, txq_id, |
| ssn, tx_fifo); |
| tid_data->agg.state = IWL_AGG_OFF; |
| ieee80211_stop_tx_ba_cb_irqsafe(priv->hw, addr, tid); |
| } |
| break; |
| case IWL_EMPTYING_HW_QUEUE_ADDBA: |
| /* We are reclaiming the last packet of the queue */ |
| if (tid_data->tfds_in_queue == 0) { |
| IWL_DEBUG_HT("HW queue empty: continue ADDBA flow\n"); |
| tid_data->agg.state = IWL_AGG_ON; |
| ieee80211_start_tx_ba_cb_irqsafe(priv->hw, addr, tid); |
| } |
| break; |
| } |
| return 0; |
| } |
| |
| /** |
| * iwl4965_queue_dec_wrap - Decrement queue index, wrap back to end if needed |
| * @index -- current index |
| * @n_bd -- total number of entries in queue (s/b power of 2) |
| */ |
| static inline int iwl4965_queue_dec_wrap(int index, int n_bd) |
| { |
| return (index == 0) ? n_bd - 1 : index - 1; |
| } |
| |
| /** |
| * iwl4965_rx_reply_compressed_ba - Handler for REPLY_COMPRESSED_BA |
| * |
| * Handles block-acknowledge notification from device, which reports success |
| * of frames sent via aggregation. |
| */ |
| static void iwl4965_rx_reply_compressed_ba(struct iwl4965_priv *priv, |
| struct iwl4965_rx_mem_buffer *rxb) |
| { |
| struct iwl4965_rx_packet *pkt = (void *)rxb->skb->data; |
| struct iwl4965_compressed_ba_resp *ba_resp = &pkt->u.compressed_ba; |
| int index; |
| struct iwl4965_tx_queue *txq = NULL; |
| struct iwl4965_ht_agg *agg; |
| DECLARE_MAC_BUF(mac); |
| |
| /* "flow" corresponds to Tx queue */ |
| u16 scd_flow = le16_to_cpu(ba_resp->scd_flow); |
| |
| /* "ssn" is start of block-ack Tx window, corresponds to index |
| * (in Tx queue's circular buffer) of first TFD/frame in window */ |
| u16 ba_resp_scd_ssn = le16_to_cpu(ba_resp->scd_ssn); |
| |
| if (scd_flow >= ARRAY_SIZE(priv->txq)) { |
| IWL_ERROR("BUG_ON scd_flow is bigger than number of queues"); |
| return; |
| } |
| |
| txq = &priv->txq[scd_flow]; |
| agg = &priv->stations[ba_resp->sta_id].tid[ba_resp->tid].agg; |
| |
| /* Find index just before block-ack window */ |
| index = iwl4965_queue_dec_wrap(ba_resp_scd_ssn & 0xff, txq->q.n_bd); |
| |
| /* TODO: Need to get this copy more safely - now good for debug */ |
| |
| IWL_DEBUG_TX_REPLY("REPLY_COMPRESSED_BA [%d]Received from %s, " |
| "sta_id = %d\n", |
| agg->wait_for_ba, |
| print_mac(mac, (u8*) &ba_resp->sta_addr_lo32), |
| ba_resp->sta_id); |
| IWL_DEBUG_TX_REPLY("TID = %d, SeqCtl = %d, bitmap = 0x%llx, scd_flow = " |
| "%d, scd_ssn = %d\n", |
| ba_resp->tid, |
| ba_resp->seq_ctl, |
| ba_resp->bitmap, |
| ba_resp->scd_flow, |
| ba_resp->scd_ssn); |
| IWL_DEBUG_TX_REPLY("DAT start_idx = %d, bitmap = 0x%llx \n", |
| agg->start_idx, |
| agg->bitmap); |
| |
| /* Update driver's record of ACK vs. not for each frame in window */ |
| iwl4965_tx_status_reply_compressed_ba(priv, agg, ba_resp); |
| |
| /* Release all TFDs before the SSN, i.e. all TFDs in front of |
| * block-ack window (we assume that they've been successfully |
| * transmitted ... if not, it's too late anyway). */ |
| if (txq->q.read_ptr != (ba_resp_scd_ssn & 0xff)) { |
| int freed = iwl4965_tx_queue_reclaim(priv, scd_flow, index); |
| priv->stations[ba_resp->sta_id]. |
| tid[ba_resp->tid].tfds_in_queue -= freed; |
| if (iwl4965_queue_space(&txq->q) > txq->q.low_mark && |
| priv->mac80211_registered && |
| agg->state != IWL_EMPTYING_HW_QUEUE_DELBA) |
| ieee80211_wake_queue(priv->hw, scd_flow); |
| iwl4965_check_empty_hw_queue(priv, ba_resp->sta_id, |
| ba_resp->tid, scd_flow); |
| } |
| } |
| |
| /** |
| * iwl4965_tx_queue_set_q2ratid - Map unique receiver/tid combination to a queue |
| */ |
| static int iwl4965_tx_queue_set_q2ratid(struct iwl4965_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 = iwl4965_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); |
| |
| iwl4965_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 IWL_BACK_QUEUE_FIRST_ID, |
| * i.e. it must be one of the higher queues used for aggregation |
| */ |
| static int iwl4965_tx_queue_agg_enable(struct iwl4965_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); |
| |
| /* Modify device's station table to Tx this TID */ |
| iwl4965_sta_modify_enable_tid_tx(priv, sta_id, tid); |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| rc = iwl4965_grab_nic_access(priv); |
| if (rc) { |
| spin_unlock_irqrestore(&priv->lock, flags); |
| return rc; |
| } |
| |
| /* 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 */ |
| iwl4965_set_bits_prph(priv, KDR_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 */ |
| iwl4965_write_targ_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); |
| |
| iwl4965_write_targ_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); |
| |
| iwl4965_set_bits_prph(priv, KDR_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); |
| |
| iwl4965_release_nic_access(priv); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| return 0; |
| } |
| |
| #endif /* CONFIG_IWL4965_HT */ |
| |
| /** |
| * iwl4965_add_station - Initialize a station's hardware rate table |
| * |
| * The uCode's station table contains a table of fallback rates |
| * for automatic fallback during transmission. |
| * |
| * NOTE: This sets up a default set of values. These will be replaced later |
| * if the driver's iwl-4965-rs rate scaling algorithm is used, instead of |
| * rc80211_simple. |
| * |
| * NOTE: Run REPLY_ADD_STA command to set up station table entry, before |
| * calling this function (which runs REPLY_TX_LINK_QUALITY_CMD, |
| * which requires station table entry to exist). |
| */ |
| void iwl4965_add_station(struct iwl4965_priv *priv, const u8 *addr, int is_ap) |
| { |
| int i, r; |
| struct iwl4965_link_quality_cmd link_cmd = { |
| .reserved1 = 0, |
| }; |
| u16 rate_flags; |
| |
| /* Set up the rate scaling to start at selected rate, fall back |
| * all the way down to 1M in IEEE order, and then spin on 1M */ |
| if (is_ap) |
| r = IWL_RATE_54M_INDEX; |
| else if (priv->band == IEEE80211_BAND_5GHZ) |
| 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; |
| |
| /* Use Tx antenna B only */ |
| rate_flags |= RATE_MCS_ANT_B_MSK; |
| rate_flags &= ~RATE_MCS_ANT_A_MSK; |
| |
| link_cmd.rs_table[i].rate_n_flags = |
| iwl4965_hw_set_rate_n_flags(iwl4965_rates[r].plcp, rate_flags); |
| r = iwl4965_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; |
| |
| iwl4965_send_cmd_pdu(priv, REPLY_TX_LINK_QUALITY_CMD, sizeof(link_cmd), |
| &link_cmd); |
| } |
| |
| #ifdef CONFIG_IWL4965_HT |
| |
| static u8 iwl4965_is_channel_extension(struct iwl4965_priv *priv, |
| enum ieee80211_band band, |
| u16 channel, u8 extension_chan_offset) |
| { |
| const struct iwl4965_channel_info *ch_info; |
| |
| ch_info = iwl4965_get_channel_info(priv, band, 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 iwl4965_is_fat_tx_allowed(struct iwl4965_priv *priv, |
| struct ieee80211_ht_info *sta_ht_inf) |
| { |
| struct iwl_ht_info *iwl_ht_conf = &priv->current_ht_config; |
| |
| if ((!iwl_ht_conf->is_ht) || |
| (iwl_ht_conf->supported_chan_width != IWL_CHANNEL_WIDTH_40MHZ) || |
| (iwl_ht_conf->extension_chan_offset == IWL_EXT_CHANNEL_OFFSET_AUTO)) |
| return 0; |
| |
| if (sta_ht_inf) { |
| if ((!sta_ht_inf->ht_supported) || |
| (!(sta_ht_inf->cap & IEEE80211_HT_CAP_SUP_WIDTH))) |
| return 0; |
| } |
| |
| return (iwl4965_is_channel_extension(priv, priv->phymode, |
| iwl_ht_conf->control_channel, |
| iwl_ht_conf->extension_chan_offset)); |
| } |
| |
| void iwl4965_set_rxon_ht(struct iwl4965_priv *priv, struct iwl_ht_info *ht_info) |
| { |
| struct iwl4965_rxon_cmd *rxon = &priv->staging_rxon; |
| u32 val; |
| |
| if (!ht_info->is_ht) |
| return; |
| |
| /* Set up channel bandwidth: 20 MHz only, or 20/40 mixed if fat ok */ |
| if (iwl4965_is_fat_tx_allowed(priv, NULL)) |
| 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 opposite of 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->ht_protection; |
| |
| rxon->flags |= cpu_to_le32(val << RXON_FLG_HT_OPERATING_MODE_POS); |
| |
| 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", |
| ht_info->supp_mcs_set[0], ht_info->supp_mcs_set[1], |
| le32_to_cpu(rxon->flags), ht_info->ht_protection, |
| ht_info->extension_chan_offset, |
| ht_info->control_channel); |
| return; |
| } |
| |
| void iwl4965_set_ht_add_station(struct iwl4965_priv *priv, u8 index, |
| struct ieee80211_ht_info *sta_ht_inf) |
| { |
| __le32 sta_flags; |
| u8 mimo_ps_mode; |
| |
| if (!sta_ht_inf || !sta_ht_inf->ht_supported) |
| goto done; |
| |
| mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2; |
| |
| sta_flags = priv->stations[index].sta.station_flags; |
| |
| sta_flags &= ~(STA_FLG_RTS_MIMO_PROT_MSK | STA_FLG_MIMO_DIS_MSK); |
| |
| switch (mimo_ps_mode) { |
| case WLAN_HT_CAP_MIMO_PS_STATIC: |
| sta_flags |= STA_FLG_MIMO_DIS_MSK; |
| break; |
| case WLAN_HT_CAP_MIMO_PS_DYNAMIC: |
| sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK; |
| break; |
| case WLAN_HT_CAP_MIMO_PS_DISABLED: |
| break; |
| default: |
| IWL_WARNING("Invalid MIMO PS mode %d", mimo_ps_mode); |
| break; |
| } |
| |
| sta_flags |= cpu_to_le32( |
| (u32)sta_ht_inf->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS); |
| |
| sta_flags |= cpu_to_le32( |
| (u32)sta_ht_inf->ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS); |
| |
| if (iwl4965_is_fat_tx_allowed(priv, sta_ht_inf)) |
| sta_flags |= STA_FLG_FAT_EN_MSK; |
| else |
| sta_flags &= ~STA_FLG_FAT_EN_MSK; |
| |
| priv->stations[index].sta.station_flags = sta_flags; |
| done: |
| return; |
| } |
| |
| static void iwl4965_sta_modify_add_ba_tid(struct iwl4965_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); |
| |
| iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, CMD_ASYNC); |
| } |
| |
| static void iwl4965_sta_modify_del_ba_tid(struct iwl4965_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); |
| |
| iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, CMD_ASYNC); |
| } |
| |
| /* |
| * Find first available (lowest unused) Tx Queue, mark it "active". |
| * Called only when finding queue for aggregation. |
| * Should never return anything < 7, because they should already |
| * be in use as EDCA AC (0-3), Command (4), HCCA (5, 6). |
| */ |
| static int iwl4965_txq_ctx_activate_free(struct iwl4965_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; |
| } |
| |
| static int iwl4965_mac_ht_tx_agg_start(struct ieee80211_hw *hw, const u8 *da, |
| u16 tid, u16 *start_seq_num) |
| { |
| struct iwl4965_priv *priv = hw->priv; |
| int sta_id; |
| int tx_fifo; |
| int txq_id; |
| int ssn = -1; |
| int rc = 0; |
| unsigned long flags; |
| struct iwl4965_tid_data *tid_data; |
| DECLARE_MAC_BUF(mac); |
| |
| if (likely(tid < ARRAY_SIZE(default_tid_to_tx_fifo))) |
| tx_fifo = default_tid_to_tx_fifo[tid]; |
| else |
| return -EINVAL; |
| |
| IWL_WARNING("%s on da = %s tid = %d\n", |
| __func__, print_mac(mac, da), tid); |
| |
| sta_id = iwl4965_hw_find_station(priv, da); |
| if (sta_id == IWL_INVALID_STATION) |
| return -ENXIO; |
| |
| if (priv->stations[sta_id].tid[tid].agg.state != IWL_AGG_OFF) { |
| IWL_ERROR("Start AGG when state is not IWL_AGG_OFF !\n"); |
| return -ENXIO; |
| } |
| |
| txq_id = iwl4965_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; |
| rc = iwl4965_tx_queue_agg_enable(priv, txq_id, tx_fifo, |
| sta_id, tid, ssn); |
| if (rc) |
| return rc; |
| |
| rc = 0; |
| if (tid_data->tfds_in_queue == 0) { |
| printk(KERN_ERR "HW queue is empty\n"); |
| tid_data->agg.state = IWL_AGG_ON; |
| ieee80211_start_tx_ba_cb_irqsafe(hw, da, tid); |
| } else { |
| IWL_DEBUG_HT("HW queue is NOT empty: %d packets in HW queue\n", |
| tid_data->tfds_in_queue); |
| tid_data->agg.state = IWL_EMPTYING_HW_QUEUE_ADDBA; |
| } |
| return rc; |
| } |
| |
| static int iwl4965_mac_ht_tx_agg_stop(struct ieee80211_hw *hw, const u8 *da, |
| u16 tid) |
| { |
| |
| struct iwl4965_priv *priv = hw->priv; |
| int tx_fifo_id, txq_id, sta_id, ssn = -1; |
| struct iwl4965_tid_data *tid_data; |
| int rc, write_ptr, read_ptr; |
| unsigned long flags; |
| DECLARE_MAC_BUF(mac); |
| |
| if (!da) { |
| IWL_ERROR("da = NULL\n"); |
| 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 = iwl4965_hw_find_station(priv, da); |
| |
| if (sta_id == IWL_INVALID_STATION) |
| return -ENXIO; |
| |
| if (priv->stations[sta_id].tid[tid].agg.state != IWL_AGG_ON) |
| IWL_WARNING("Stopping AGG while state not IWL_AGG_ON\n"); |
| |
| tid_data = &priv->stations[sta_id].tid[tid]; |
| ssn = (tid_data->seq_number & IEEE80211_SCTL_SEQ) >> 4; |
| txq_id = tid_data->agg.txq_id; |
| write_ptr = priv->txq[txq_id].q.write_ptr; |
| read_ptr = priv->txq[txq_id].q.read_ptr; |
| |
| /* The queue is not empty */ |
| if (write_ptr != read_ptr) { |
| IWL_DEBUG_HT("Stopping a non empty AGG HW QUEUE\n"); |
| priv->stations[sta_id].tid[tid].agg.state = |
| IWL_EMPTYING_HW_QUEUE_DELBA; |
| return 0; |
| } |
| |
| IWL_DEBUG_HT("HW queue empty\n");; |
| priv->stations[sta_id].tid[tid].agg.state = IWL_AGG_OFF; |
| |
| spin_lock_irqsave(&priv->lock, flags); |
| rc = iwl4965_grab_nic_access(priv); |
| if (rc) { |
| spin_unlock_irqrestore(&priv->lock, flags); |
| return rc; |
| } |
| rc = iwl4965_tx_queue_agg_disable(priv, txq_id, ssn, tx_fifo_id); |
| iwl4965_release_nic_access(priv); |
| spin_unlock_irqrestore(&priv->lock, flags); |
| |
| if (rc) |
| return rc; |
| |
| ieee80211_stop_tx_ba_cb_irqsafe(priv->hw, da, tid); |
| |
| IWL_DEBUG_INFO("iwl4965_mac_ht_tx_agg_stop on da=%s tid=%d\n", |
| print_mac(mac, da), tid); |
| |
| return 0; |
| } |
| |
| int iwl4965_mac_ampdu_action(struct ieee80211_hw *hw, |
| enum ieee80211_ampdu_mlme_action action, |
| const u8 *addr, u16 tid, u16 *ssn) |
| { |
| struct iwl4965_priv *priv = hw->priv; |
| int sta_id; |
| DECLARE_MAC_BUF(mac); |
| |
| IWL_DEBUG_HT("A-MPDU action on da=%s tid=%d ", |
| print_mac(mac, addr), tid); |
| sta_id = iwl4965_hw_find_station(priv, addr); |
| switch (action) { |
| case IEEE80211_AMPDU_RX_START: |
| IWL_DEBUG_HT("start Rx\n"); |
| iwl4965_sta_modify_add_ba_tid(priv, sta_id, tid, *ssn); |
| break; |
| case IEEE80211_AMPDU_RX_STOP: |
| IWL_DEBUG_HT("stop Rx\n"); |
| iwl4965_sta_modify_del_ba_tid(priv, sta_id, tid); |
| break; |
| case IEEE80211_AMPDU_TX_START: |
| IWL_DEBUG_HT("start Tx\n"); |
| return iwl4965_mac_ht_tx_agg_start(hw, addr, tid, ssn); |
| case IEEE80211_AMPDU_TX_STOP: |
| IWL_DEBUG_HT("stop Tx\n"); |
| return iwl4965_mac_ht_tx_agg_stop(hw, addr, tid); |
| default: |
| IWL_DEBUG_HT("unknown\n"); |
| return -EINVAL; |
| break; |
| } |
| return 0; |
| } |
| |
| #endif /* CONFIG_IWL4965_HT */ |
| |
| /* Set up 4965-specific Rx frame reply handlers */ |
| void iwl4965_hw_rx_handler_setup(struct iwl4965_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_IWL4965_HT |
| priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl4965_rx_reply_compressed_ba; |
| #endif /* CONFIG_IWL4965_HT */ |
| } |
| |
| void iwl4965_hw_setup_deferred_work(struct iwl4965_priv *priv) |
| { |
| INIT_WORK(&priv->txpower_work, iwl4965_bg_txpower_work); |
| INIT_WORK(&priv->statistics_work, iwl4965_bg_statistics_work); |
| #ifdef CONFIG_IWL4965_SENSITIVITY |
| INIT_WORK(&priv->sensitivity_work, iwl4965_bg_sensitivity_work); |
| #endif |
| init_timer(&priv->statistics_periodic); |
| priv->statistics_periodic.data = (unsigned long)priv; |
| priv->statistics_periodic.function = iwl4965_bg_statistics_periodic; |
| } |
| |
| void iwl4965_hw_cancel_deferred_work(struct iwl4965_priv *priv) |
| { |
| del_timer_sync(&priv->statistics_periodic); |
| |
| cancel_delayed_work(&priv->init_alive_start); |
| } |
| |
| struct pci_device_id iwl4965_hw_card_ids[] = { |
| {PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x4229)}, |
| {PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x4230)}, |
| {0} |
| }; |
| |
| /* |
| * The device's EEPROM semaphore prevents conflicts between driver and uCode |
| * when accessing the EEPROM; each access is a series of pulses to/from the |
| * EEPROM chip, not a single event, so even reads could conflict if they |
| * weren't arbitrated by the semaphore. |
| */ |
| int iwl4965_eeprom_acquire_semaphore(struct iwl4965_priv *priv) |
| { |
| u16 count; |
| int rc; |
| |
| for (count = 0; count < EEPROM_SEM_RETRY_LIMIT; count++) { |
| /* Request semaphore */ |
| iwl4965_set_bit(priv, CSR_HW_IF_CONFIG_REG, |
| CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM); |
| |
| /* See if we got it */ |
| rc = iwl4965_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("Acquired semaphore after %d tries.\n", |
| count+1); |
| return rc; |
| } |
| } |
| |
| return rc; |
| } |
| |
| MODULE_DEVICE_TABLE(pci, iwl4965_hw_card_ids); |