resource代表一个资源,可以是一段IO地址区间,或者Mem地址区间,总线树上每枚举一个设备,Host bridge就根据设备的BAR空间大小分配合适的资源给这个PCI设备用,这里的资源就是IO或者内存空间的物理地址。PCI设备BAR寄存器的值就是从这里申请得来的。申请的流程如下 pci_read_bases /* 遍历每个BAR寄存器,读取其内容,并为其...
x86_pci_root_bus_resources//为Host bridge分配资源,通常情况下就是64K IO空间地址和内存空间地址就在这里划分pci_scan_root_bus//枚举总线树上的设备pci_create_root_bus//创建Host bridgepci_scan_child_bus//扫描总线树上所有设备,如果有pci桥,递归扫描下去pci_scan_slot pci_scan_single_device//扫描设备,...
voidrtl92c_enable_interrupt(struct ieee80211_hw *hw){structrtl_priv*rtlpriv=rtl_priv(hw);structrtl_hal*rtlhal=rtl_hal(rtl_priv(hw));structrtl_pci*rtlpci=rtl_pcidev(rtl_pcipriv(hw));structrtl_usb*rtlusb=rtl_usbdev(rtl_usbpriv(hw));if(IS_HARDWARE_TYPE_8192CE(rtlhal)) { rtl_writ...
struct pci_host_bridge *bridge = pci_host_bridge_from_priv(rockchip); struct resource_entry *entry; u64 pci_addr, size; int offset; int err; int reg_no; rockchip_pcie_cfg_configuration_accesses(rockchip, AXI_WRAPPER_TYPE0_CFG); entry = resource_list_first_type(&bridge->windows, IORES...
IS_ENABLED(CONFIG_PCIE_CADENCE_PLAT_HOST)) return -ENODEV; bridge = devm_pci_alloc_host_bridge(dev, sizeof(*rc)); if (!bridge) return -ENOMEM; rc = pci_host_bridge_priv(bridge); rc->pcie.dev = dev; rc->pcie.ops = &cdns_plat_ops; cdns_plat_pcie->pcie = &rc->pcie; ret ...
card = priv->card; card->bridge_io = bridge_io; card->attr_io = attr_io; hermes_struct_init(&priv->hw, hermes_io, HERMES_16BIT_REGSPACING); err = request_irq(pdev->irq, orinoco_interrupt, IRQF_SHARED, DRIVER_NAME, priv);if(err) { ...
Host/PCI桥:用于连接CPU与PCI根总线,在PC中,内存控制器也通常被集成到Host/PCI桥设备芯片,Host/PCI桥通常被称 为“北桥芯片组”。 PCI/ISA桥:用于连接旧的ISA总线。PCI/ISA桥也被称为“南桥芯片组”。 PCI-to-PCI桥:用于连接PCI主总线与次总线。
1. 你需要知道它的地址空间。2. 这个地址空间是内核PCI核心驱动给它分配的 3. 分配多大的空间？这就...
pcipriv->ndis_adapter.pcibridge_linkctrlreg | rtlpci->const_hostpci_aspm_setting;if ( pcibridge_vendor == PCI_BRIDGE_VENDOR_INTEL ) u_pcibridge_aspmsetting &= ~BIT( 0 );pci_write_config_byte( rtlpci->pdev, ( num4bytes << 2 ), ...
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