diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-agn.c | 87 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-dev.h | 9 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-io.h | 6 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-pci.c | 113 |
4 files changed, 131 insertions, 84 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c index 0098245a62ed..72db1a9fab84 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn.c @@ -3486,7 +3486,7 @@ int iwl_probe(void *bus_specific, struct iwl_bus_ops *bus_ops, int err = 0; struct iwl_priv *priv; struct ieee80211_hw *hw; - u16 pci_cmd, num_mac; + u16 num_mac; u32 hw_rev; /************************ @@ -3532,49 +3532,6 @@ int iwl_probe(void *bus_specific, struct iwl_bus_ops *bus_ops, if (iwl_alloc_traffic_mem(priv)) IWL_ERR(priv, "Not enough memory to generate traffic log\n"); - /************************** - * 2. Initializing PCI bus - **************************/ - pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1 | - PCIE_LINK_STATE_CLKPM); - - if (pci_enable_device(pdev)) { - err = -ENODEV; - goto out_ieee80211_free_hw; - } - - pci_set_master(pdev); - - err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36)); - if (!err) - err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36)); - if (err) { - err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); - if (!err) - err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); - /* both attempts failed: */ - if (err) { - IWL_WARN(priv, "No suitable DMA available.\n"); - goto out_pci_disable_device; - } - } - - err = pci_request_regions(pdev, DRV_NAME); - if (err) - goto out_pci_disable_device; - - /*********************** - * 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(priv, "pci_resource_len = 0x%08llx\n", - (unsigned long long) pci_resource_len(pdev, 0)); - IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base); /* these spin locks will be used in apm_ops.init and EEPROM access * we should init now @@ -3589,17 +3546,16 @@ int iwl_probe(void *bus_specific, struct iwl_bus_ops *bus_ops, */ iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET); + /*********************** + * 3. Read REV register + ***********************/ hw_rev = iwl_hw_detect(priv); IWL_INFO(priv, "Detected %s, REV=0x%X\n", priv->cfg->name, hw_rev); - /* We disable the RETRY_TIMEOUT register (0x41) to keep - * PCI Tx retries from interfering with C3 CPU state */ - pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00); - if (iwl_prepare_card_hw(priv)) { IWL_WARN(priv, "Failed, HW not ready\n"); - goto out_iounmap; + goto out_free_traffic_mem; } /***************** @@ -3609,7 +3565,7 @@ int iwl_probe(void *bus_specific, struct iwl_bus_ops *bus_ops, err = iwl_eeprom_init(priv, hw_rev); if (err) { IWL_ERR(priv, "Unable to init EEPROM\n"); - goto out_iounmap; + goto out_free_traffic_mem; } err = iwl_eeprom_check_version(priv); if (err) @@ -3639,6 +3595,7 @@ int iwl_probe(void *bus_specific, struct iwl_bus_ops *bus_ops, * 5. Setup HW constants ************************/ if (iwl_set_hw_params(priv)) { + err = -ENOENT; IWL_ERR(priv, "failed to set hw parameters\n"); goto out_free_eeprom; } @@ -3655,15 +3612,13 @@ int iwl_probe(void *bus_specific, struct iwl_bus_ops *bus_ops, /******************** * 7. Setup services ********************/ - pci_enable_msi(priv->pci_dev); - iwl_alloc_isr_ict(priv); err = request_irq(priv->pci_dev->irq, iwl_isr_ict, IRQF_SHARED, DRV_NAME, priv); if (err) { IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq); - goto out_disable_msi; + goto out_uninit_drv; } iwl_setup_deferred_work(priv); @@ -3671,16 +3626,9 @@ int iwl_probe(void *bus_specific, struct iwl_bus_ops *bus_ops, iwl_testmode_init(priv); /********************************************* - * 8. Enable interrupts and read RFKILL state + * 8. Enable interrupts *********************************************/ - /* enable rfkill interrupt: hw bug w/a */ - pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd); - if (pci_cmd & PCI_COMMAND_INTX_DISABLE) { - pci_cmd &= ~PCI_COMMAND_INTX_DISABLE; - pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd); - } - iwl_enable_rfkill_int(priv); /* If platform's RF_KILL switch is NOT set to KILL */ @@ -3707,20 +3655,12 @@ int iwl_probe(void *bus_specific, struct iwl_bus_ops *bus_ops, destroy_workqueue(priv->workqueue); priv->workqueue = NULL; free_irq(priv->pci_dev->irq, priv); - out_disable_msi: iwl_free_isr_ict(priv); - pci_disable_msi(priv->pci_dev); + out_uninit_drv: iwl_uninit_drv(priv); out_free_eeprom: iwl_eeprom_free(priv); - out_iounmap: - pci_iounmap(pdev, priv->hw_base); - out_pci_release_regions: - priv->bus.ops->set_drv_data(&priv->bus, NULL); - pci_release_regions(pdev); - out_pci_disable_device: - pci_disable_device(pdev); - out_ieee80211_free_hw: + out_free_traffic_mem: iwl_free_traffic_mem(priv); ieee80211_free_hw(priv->hw); out: @@ -3729,7 +3669,6 @@ int iwl_probe(void *bus_specific, struct iwl_bus_ops *bus_ops, void __devexit iwl_remove(struct iwl_priv * priv) { - struct pci_dev *pdev = priv->pci_dev; unsigned long flags; wait_for_completion(&priv->_agn.firmware_loading_complete); @@ -3788,10 +3727,6 @@ void __devexit iwl_remove(struct iwl_priv * priv) iwl_free_traffic_mem(priv); free_irq(priv->pci_dev->irq, priv); - pci_disable_msi(priv->pci_dev); - pci_iounmap(pdev, priv->hw_base); - pci_release_regions(pdev); - pci_disable_device(pdev); priv->bus.ops->set_drv_data(&priv->bus, NULL); iwl_uninit_drv(priv); diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h index 49e6c68f9b75..700e9f92129c 100644 --- a/drivers/net/wireless/iwlwifi/iwl-dev.h +++ b/drivers/net/wireless/iwlwifi/iwl-dev.h @@ -1195,10 +1195,16 @@ struct iwl_bus; * struct iwl_bus_ops - bus specific operations * @set_drv_data: set the priv pointer to the bus layer * @get_dev: returns the device struct + * @write8: write a byte to register at offset ofs + * @write32: write a dword to register at offset ofs + * @wread32: read a dword at register at offset ofs */ struct iwl_bus_ops { void (*set_drv_data)(struct iwl_bus *bus, void *priv); struct device *(*get_dev)(const struct iwl_bus *bus); + void (*write8)(struct iwl_bus *bus, u32 ofs, u8 val); + void (*write32)(struct iwl_bus *bus, u32 ofs, u32 val); + u32 (*read32)(struct iwl_bus *bus, u32 ofs); }; struct iwl_bus { @@ -1282,9 +1288,6 @@ struct iwl_priv { /* basic pci-network driver stuff */ struct pci_dev *pci_dev; - /* pci hardware address support */ - void __iomem *hw_base; - struct iwl_bus bus; /* bus specific data */ /* microcode/device supports multiple contexts */ diff --git a/drivers/net/wireless/iwlwifi/iwl-io.h b/drivers/net/wireless/iwlwifi/iwl-io.h index 869edc580ec6..c56eae74c3cd 100644 --- a/drivers/net/wireless/iwlwifi/iwl-io.h +++ b/drivers/net/wireless/iwlwifi/iwl-io.h @@ -38,18 +38,18 @@ static inline void iwl_write8(struct iwl_priv *priv, u32 ofs, u8 val) { trace_iwlwifi_dev_iowrite8(priv, ofs, val); - iowrite8(val, priv->hw_base + ofs); + priv->bus.ops->write8(&priv->bus, ofs, val); } static inline void iwl_write32(struct iwl_priv *priv, u32 ofs, u32 val) { trace_iwlwifi_dev_iowrite32(priv, ofs, val); - iowrite32(val, priv->hw_base + ofs); + priv->bus.ops->write32(&priv->bus, ofs, val); } static inline u32 iwl_read32(struct iwl_priv *priv, u32 ofs) { - u32 val = ioread32(priv->hw_base + ofs); + u32 val = priv->bus.ops->read32(&priv->bus, ofs); trace_iwlwifi_dev_ioread32(priv, ofs, val); return val; } diff --git a/drivers/net/wireless/iwlwifi/iwl-pci.c b/drivers/net/wireless/iwlwifi/iwl-pci.c index 00458fc2c402..43de98efa3e4 100644 --- a/drivers/net/wireless/iwlwifi/iwl-pci.c +++ b/drivers/net/wireless/iwlwifi/iwl-pci.c @@ -91,9 +91,28 @@ static struct device *iwl_pci_get_dev(const struct iwl_bus *bus) return &(IWL_BUS_GET_PCI_DEV(bus)->dev); } +static void iwl_pci_write8(struct iwl_bus *bus, u32 ofs, u8 val) +{ + iowrite8(val, IWL_BUS_GET_PCI_BUS(bus)->hw_base + ofs); +} + +static void iwl_pci_write32(struct iwl_bus *bus, u32 ofs, u32 val) +{ + iowrite32(val, IWL_BUS_GET_PCI_BUS(bus)->hw_base + ofs); +} + +static u32 iwl_pci_read32(struct iwl_bus *bus, u32 ofs) +{ + u32 val = ioread32(IWL_BUS_GET_PCI_BUS(bus)->hw_base + ofs); + return val; +} + static struct iwl_bus_ops pci_ops = { .set_drv_data = iwl_pci_set_drv_data, .get_dev = iwl_pci_get_dev, + .write8 = iwl_pci_write8, + .write32 = iwl_pci_write32, + .read32 = iwl_pci_read32, }; #define IWL_PCI_DEVICE(dev, subdev, cfg) \ @@ -296,6 +315,8 @@ static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data); struct iwl_pci_bus *bus; + u8 rev_id; + u16 pci_cmd; int err; bus = kzalloc(sizeof(*bus), GFP_KERNEL); @@ -307,16 +328,103 @@ static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) bus->pci_dev = pdev; + /* W/A - seems to solve weird behavior. We need to remove this if we + * don't want to stay in L1 all the time. This wastes a lot of power */ + pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1 | + PCIE_LINK_STATE_CLKPM); + + if (pci_enable_device(pdev)) { + err = -ENODEV; + goto out_no_pci; + } + + pci_set_master(pdev); + + err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36)); + if (!err) + err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36)); + if (err) { + err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); + if (!err) + err = pci_set_consistent_dma_mask(pdev, + DMA_BIT_MASK(32)); + /* both attempts failed: */ + if (err) { + pr_err("No suitable DMA available.\n"); + goto out_pci_disable_device; + } + } + + err = pci_request_regions(pdev, DRV_NAME); + if (err) { + pr_err("pci_request_regions failed"); + goto out_pci_disable_device; + } + + bus->hw_base = pci_iomap(pdev, 0, 0); + if (!bus->hw_base) { + pr_err("pci_iomap failed"); + err = -ENODEV; + goto out_pci_release_regions; + } + + pr_info("pci_resource_len = 0x%08llx\n", + (unsigned long long) pci_resource_len(pdev, 0)); + pr_info("pci_resource_base = %p\n", bus->hw_base); + + pci_read_config_byte(pdev, PCI_REVISION_ID, &rev_id); + pr_info("HW Revision ID = 0x%X\n", rev_id); + + /* We disable the RETRY_TIMEOUT register (0x41) to keep + * PCI Tx retries from interfering with C3 CPU state */ + pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00); + + err = pci_enable_msi(pdev); + if (err) { + pr_err("pci_enable_msi failed"); + goto out_iounmap; + } + + /* TODO: Move this away, not needed if not MSI */ + /* enable rfkill interrupt: hw bug w/a */ + pci_read_config_word(pdev, PCI_COMMAND, &pci_cmd); + if (pci_cmd & PCI_COMMAND_INTX_DISABLE) { + pci_cmd &= ~PCI_COMMAND_INTX_DISABLE; + pci_write_config_word(pdev, PCI_COMMAND, pci_cmd); + } + err = iwl_probe((void *) bus, &pci_ops, cfg); if (err) - goto out_no_pci; + goto out_disable_msi; return 0; +out_disable_msi: + pci_disable_msi(pdev); +out_iounmap: + pci_iounmap(pdev, bus->hw_base); +out_pci_release_regions: + pci_set_drvdata(pdev, NULL); + pci_release_regions(pdev); +out_pci_disable_device: + pci_disable_device(pdev); out_no_pci: kfree(bus); return err; } +static void iwl_pci_down(void *bus) +{ + struct iwl_pci_bus *pci_bus = (struct iwl_pci_bus *) bus; + + pci_disable_msi(pci_bus->pci_dev); + pci_iounmap(pci_bus->pci_dev, pci_bus->hw_base); + pci_release_regions(pci_bus->pci_dev); + pci_disable_device(pci_bus->pci_dev); + pci_set_drvdata(pci_bus->pci_dev, NULL); + + kfree(pci_bus); +} + static void __devexit iwl_pci_remove(struct pci_dev *pdev) { struct iwl_priv *priv = pci_get_drvdata(pdev); @@ -326,7 +434,8 @@ static void __devexit iwl_pci_remove(struct pci_dev *pdev) return; iwl_remove(priv); - kfree(IWL_BUS_GET_PCI_BUS(&priv->bus)); + + iwl_pci_down(IWL_BUS_GET_PCI_BUS(&priv->bus)); } #ifdef CONFIG_PM |