PCIe port bus driver就是提供PCIe port driver设备的创建,中断申请,为PCIe高级服务做好基础准备。 PCI Express Port Bus Driver实现 drivers/pci/pcie/portdrv_pci.c 关键结构 支持设备类型 PCI-Express port、PCI-to-PCI bridge、Root Complex Event Collector /** LINUX Device Driver Model*/staticconststructpc...
PCI总线驱动是一个遵循UEFI驱动模型的特殊驱动，它需要实现EFI_DRIVER_BINDING_PROTOCOL，该协议由Supported(), Start(), Stop()函数和Version, ImageHandle, DriverBindingHandle等元素构成。驱动绑定结构在PciBusEntryPoint安装，通常在DXE阶段。Supported()函数用于判断控制器是否支持PCI总线驱动，通过检查EFI_...
pci总线驱动是符合UEFI 驱动模型的UEFI 驱动,符合UEFI驱动模型的UEFI驱动需要实现EFI_DRIVER_BINDING_PROTOCOL,这个protocol由 Supported(), Start(), Stop()三个函数和 Version, ImageHandle, DriverBindingHandle三个数据构成。对于pci总线驱动来说,DriverBinding结构如下, EFI_DRIVER_BINDING_PROTOCOLgPciBusDriverBinding...
PCI Express Port Bus Driver作用 PCIe port包含Root Port and the Switch Port, switch port又分为Upstream Port和Downstream Port。PCIe port通常提供多个高级服务,如native hotplug support (HP), power management event support (PME), advanced error reporting support (AER), and Downstream Port Containment(DP...
PCIe Port Bus Driver负责创建PCIe Port驱动设备、申请中断以及为高级服务做好准备。在drivers/pci/pcie/portdrv_pci.c文件中，支持设备类型包括PCI-Express port、PCI-to-PCI bridge、Root Complex Event Collector。关键接口为pcie_port_device_register，用于申请用于Hotplug、AER、DPC、PME等高级服务的...
PciBusDriver 关键函数解析 PciBusDriverBindingStart 函数 当对PCIRootBridge 设备Handle 或者DevicePath进行Connect, PCI 总线驱动就会开始执行。 AI检测代码解析 PcibusDriverBindingStart()开始对当前RootBridge 进行PCI 总线设备枚举和资源分配。 Controller handle 表明Host Bridge Controller 下面某一个RootBridge 设备。
PCI bus support makes it possible to include a wide variety of inexpensive PCI devices on embedded hardware platforms.The PCI bus driver enumerates the PCI bus. To read bus address registers and interrupt information from the PCI configuration space header, use the registry information provided by...
The following registry key example shows the PCI bus driver registry keys, which are in %_WINCEROOT%\Public\Common\OAK\Drivers\PCIBus\PCIBus.reg.Copy [HKEY_LOCAL_MACHINE\Drivers\BuiltIn\PCI] "Dll"="PCIbus.dll" "Order"=dword:20 "Flags"=dword:8 "BusIoctl"=dword:2a0048 "IClass"=...
-->pci_create_root_bus //创建代表pcie控制器的pci_host_bridge和第一条pci总线,driver/pci/probe.c -->pci_scan_child_bus //枚举pci总线上的所有设备 -->pci_scan_slot //扫描PCI 多功能设备,如果发现是单功能设备,不再继续扫描,如果发现是多功能设备,则进行8次扫描 ...