diff options
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-4965.c | 19 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl4965-base.c | 252 |
2 files changed, 151 insertions, 120 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-4965.c b/drivers/net/wireless/iwlwifi/iwl-4965.c index b2ea4d4f3f3..3d30cba0ad4 100644 --- a/drivers/net/wireless/iwlwifi/iwl-4965.c +++ b/drivers/net/wireless/iwlwifi/iwl-4965.c @@ -1843,14 +1843,26 @@ int iwl4965_alive_notify(struct iwl_priv *priv) */ int iwl4965_hw_set_hw_setting(struct iwl_priv *priv) { + int ret = 0; + + if ((iwl4965_param_queues_num > IWL_MAX_NUM_QUEUES) || + (iwl4965_param_queues_num < IWL_MIN_NUM_QUEUES)) { + IWL_ERROR("invalid queues_num, should be between %d and %d\n", + IWL_MIN_NUM_QUEUES, IWL_MAX_NUM_QUEUES); + ret = -EINVAL; + goto out; + } + /* 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; + if (!priv->hw_setting.shared_virt) { + ret = -ENOMEM; + goto out; + } memset(priv->hw_setting.shared_virt, 0, sizeof(struct iwl4965_shared)); @@ -1868,7 +1880,8 @@ int iwl4965_hw_set_hw_setting(struct iwl_priv *priv) priv->hw_setting.tx_ant_num = 2; - return 0; +out: + return ret; } /** diff --git a/drivers/net/wireless/iwlwifi/iwl4965-base.c b/drivers/net/wireless/iwlwifi/iwl4965-base.c index 396940e701e..a2ee34e40b2 100644 --- a/drivers/net/wireless/iwlwifi/iwl4965-base.c +++ b/drivers/net/wireless/iwlwifi/iwl4965-base.c @@ -8522,6 +8522,10 @@ static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *e int i; DECLARE_MAC_BUF(mac); + /************************ + * 1. Allocating HW data + ************************/ + /* Disabling hardware scan means that mac80211 will perform scans * "the hard way", rather than using device's scan. */ if (iwl4965_param_disable_hw_scan) { @@ -8529,14 +8533,6 @@ static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *e iwl4965_hw_ops.hw_scan = NULL; } - if ((iwl4965_param_queues_num > IWL_MAX_NUM_QUEUES) || - (iwl4965_param_queues_num < IWL_MIN_NUM_QUEUES)) { - IWL_ERROR("invalid queues_num, should be between %d and %d\n", - IWL_MIN_NUM_QUEUES, IWL_MAX_NUM_QUEUES); - err = -EINVAL; - goto out; - } - /* mac80211 allocates memory for this device instance, including * space for this driver's private structure */ hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), &iwl4965_hw_ops); @@ -8547,22 +8543,101 @@ static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *e } SET_IEEE80211_DEV(hw, &pdev->dev); - hw->rate_control_algorithm = "iwl-4965-rs"; - IWL_DEBUG_INFO("*** LOAD DRIVER ***\n"); priv = hw->priv; priv->hw = hw; priv->cfg = cfg; priv->pci_dev = pdev; - priv->antenna = (enum iwl4965_antenna)iwl4965_param_antenna; + #ifdef CONFIG_IWLWIFI_DEBUG iwl_debug_level = iwl4965_param_debug; atomic_set(&priv->restrict_refcnt, 0); #endif - priv->retry_rate = 1; - priv->ibss_beacon = NULL; + /************************** + * 2. Initializing PCI bus + **************************/ + if (pci_enable_device(pdev)) { + err = -ENODEV; + goto out_ieee80211_free_hw; + } + + pci_set_master(pdev); + + err = pci_set_dma_mask(pdev, DMA_32BIT_MASK); + if (!err) + err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); + if (err) { + printk(KERN_WARNING DRV_NAME + ": No suitable DMA available.\n"); + goto out_pci_disable_device; + } + + err = pci_request_regions(pdev, DRV_NAME); + if (err) + goto out_pci_disable_device; + + pci_set_drvdata(pdev, priv); + + /* We disable the RETRY_TIMEOUT register (0x41) to keep + * PCI Tx retries from interfering with C3 CPU state */ + pci_write_config_byte(pdev, 0x41, 0x00); + + /*********************** + * 3. Read REV register + ***********************/ + priv->hw_base = pci_iomap(pdev, 0, 0); + if (!priv->hw_base) { + err = -ENODEV; + goto out_pci_release_regions; + } + + IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n", + (unsigned long long) pci_resource_len(pdev, 0)); + IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base); + + printk(KERN_INFO DRV_NAME + ": Detected Intel Wireless WiFi Link %s\n", priv->cfg->name); + + /***************** + * 4. Read EEPROM + *****************/ + /* nic init */ + 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); + err = 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 (err < 0) { + IWL_DEBUG_INFO("Failed to init the card\n"); + goto out_iounmap; + } + /* Read the EEPROM */ + err = iwl_eeprom_init(priv); + if (err) { + IWL_ERROR("Unable to init EEPROM\n"); + goto out_iounmap; + } + /* MAC Address location in EEPROM same for 3945/4965 */ + iwl_eeprom_get_mac(priv, priv->mac_addr); + IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr)); + SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr); + + /************************ + * 5. Setup HW constants + ************************/ + /* Device-specific setup */ + if (iwl4965_hw_set_hw_setting(priv)) { + IWL_ERROR("failed to set hw settings\n"); + goto out_iounmap; + } + + /******************* + * 6. Setup hw/priv + *******************/ /* Tell mac80211 and its clients (e.g. Wireless Extensions) * the range of signal quality values that we'll provide. @@ -8583,6 +8658,11 @@ static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *e hw->queues = 16; #endif /* CONFIG_IWL4965_HT */ + hw->rate_control_algorithm = "iwl-4965-rs"; + priv->antenna = (enum iwl4965_antenna)iwl4965_param_antenna; + priv->retry_rate = 1; + priv->ibss_beacon = NULL; + spin_lock_init(&priv->lock); spin_lock_init(&priv->power_data.lock); spin_lock_init(&priv->sta_lock); @@ -8595,12 +8675,6 @@ static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *e INIT_LIST_HEAD(&priv->free_frames); mutex_init(&priv->mutex); - if (pci_enable_device(pdev)) { - err = -ENODEV; - goto out_ieee80211_free_hw; - } - - pci_set_master(pdev); /* Clear the driver's (not device's) station table */ iwl4965_clear_stations_table(priv); @@ -8610,44 +8684,8 @@ static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *e priv->ieee_rates = NULL; priv->band = IEEE80211_BAND_2GHZ; - err = pci_set_dma_mask(pdev, DMA_32BIT_MASK); - if (!err) - err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); - if (err) { - printk(KERN_WARNING DRV_NAME ": No suitable DMA available.\n"); - goto out_pci_disable_device; - } - - pci_set_drvdata(pdev, priv); - err = pci_request_regions(pdev, DRV_NAME); - if (err) - goto out_pci_disable_device; - - /* We disable the RETRY_TIMEOUT register (0x41) to keep - * PCI Tx retries from interfering with C3 CPU state */ - pci_write_config_byte(pdev, 0x41, 0x00); - - priv->hw_base = pci_iomap(pdev, 0, 0); - if (!priv->hw_base) { - err = -ENODEV; - goto out_pci_release_regions; - } - - IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n", - (unsigned long long) pci_resource_len(pdev, 0)); - IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base); - - /* Initialize module parameter values here */ - - /* Disable radio (SW RF KILL) via parameter when loading driver */ - if (iwl4965_param_disable) { - set_bit(STATUS_RF_KILL_SW, &priv->status); - IWL_DEBUG_INFO("Radio disabled.\n"); - } - priv->iw_mode = IEEE80211_IF_TYPE_STA; - priv->ps_mode = 0; priv->use_ant_b_for_management_frame = 1; /* start with ant B */ priv->valid_antenna = 0x7; /* assume all 3 connected */ priv->ps_mode = IWL_MIMO_PS_NONE; @@ -8655,73 +8693,22 @@ static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *e /* Choose which receivers/antennas to use */ iwl4965_set_rxon_chain(priv); - - printk(KERN_INFO DRV_NAME - ": Detected Intel Wireless WiFi Link %s\n", priv->cfg->name); - - /* Device-specific setup */ - if (iwl4965_hw_set_hw_setting(priv)) { - IWL_ERROR("failed to set hw settings\n"); - goto out_iounmap; - } - - if (iwl4965_param_qos_enable) - priv->qos_data.qos_enable = 1; - iwl4965_reset_qos(priv); priv->qos_data.qos_active = 0; priv->qos_data.qos_cap.val = 0; iwl4965_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6); - iwl4965_setup_deferred_work(priv); - iwl4965_setup_rx_handlers(priv); priv->rates_mask = IWL_RATES_MASK; /* If power management is turned on, default to AC mode */ priv->power_mode = IWL_POWER_AC; priv->user_txpower_limit = IWL_DEFAULT_TX_POWER; - iwl4965_disable_interrupts(priv); - - err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group); - if (err) { - IWL_ERROR("failed to create sysfs device attributes\n"); - goto out_release_irq; - } - - err = iwl_dbgfs_register(priv, DRV_NAME); - if (err) { - IWL_ERROR("failed to create debugfs files\n"); - goto out_remove_sysfs; - } - /* nic init */ - 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); - err = 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 (err < 0) { - IWL_DEBUG_INFO("Failed to init the card\n"); - goto out_remove_dbgfs; - } - /* Read the EEPROM */ - err = iwl_eeprom_init(priv); - if (err) { - IWL_ERROR("Unable to init EEPROM\n"); - goto out_remove_dbgfs; - } - /* MAC Address location in EEPROM same for 3945/4965 */ - iwl_eeprom_get_mac(priv, priv->mac_addr); - IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr)); - SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr); - err = iwl4965_init_channel_map(priv); if (err) { IWL_ERROR("initializing regulatory failed: %d\n", err); - goto out_remove_dbgfs; + goto out_unset_hw_settings; } err = iwl4965_init_geos(priv); @@ -8739,32 +8726,63 @@ static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *e priv->hw->conf.beacon_int = 100; priv->mac80211_registered = 1; + + /********************************** + * 7. Initialize module parameters + **********************************/ + + /* Disable radio (SW RF KILL) via parameter when loading driver */ + if (iwl4965_param_disable) { + set_bit(STATUS_RF_KILL_SW, &priv->status); + IWL_DEBUG_INFO("Radio disabled.\n"); + } + + if (iwl4965_param_qos_enable) + priv->qos_data.qos_enable = 1; + + /******************** + * 8. Setup services + ********************/ + iwl4965_disable_interrupts(priv); + + err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group); + if (err) { + IWL_ERROR("failed to create sysfs device attributes\n"); + goto out_free_geos; + } + + err = iwl_dbgfs_register(priv, DRV_NAME); + if (err) { + IWL_ERROR("failed to create debugfs files\n"); + goto out_remove_sysfs; + } + + iwl4965_setup_deferred_work(priv); + iwl4965_setup_rx_handlers(priv); + + /******************** + * 9. Conclude + ********************/ pci_save_state(pdev); pci_disable_device(pdev); return 0; + out_remove_sysfs: + sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group); out_free_geos: iwl4965_free_geos(priv); out_free_channel_map: iwl4965_free_channel_map(priv); - out_remove_dbgfs: - iwl_dbgfs_unregister(priv); - out_remove_sysfs: - sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group); - - out_release_irq: - destroy_workqueue(priv->workqueue); - priv->workqueue = NULL; + out_unset_hw_settings: iwl4965_unset_hw_setting(priv); - out_iounmap: pci_iounmap(pdev, priv->hw_base); out_pci_release_regions: pci_release_regions(pdev); + pci_set_drvdata(pdev, NULL); out_pci_disable_device: pci_disable_device(pdev); - pci_set_drvdata(pdev, NULL); out_ieee80211_free_hw: ieee80211_free_hw(priv->hw); out: |