Documentation/PCI/pciebus-howto.rst

5 The PCI Express Port Bus Driver Guide HOWTO
14 This guide describes the basics of the PCI Express Port Bus driver
16 register/unregister with the PCI Express Port Bus Driver.
19 What is the PCI Express Port Bus Driver
22 A PCI Express Port is a logical PCI-PCI Bridge structure. There
23 are two types of PCI Express Port: the Root Port and the Switch
24 Port. The Root Port originates a PCI Express link from a PCI Express
25 Root Complex and the Switch Port connects PCI Express links to
30 PCI Express link from the PCI Express Switch.
32 A PCI Express Port can provide up to four distinct functions,
34 PCI Express Port's services include native hotplug support (HP),
40 Why use the PCI Express Port Bus Driver?
45 Express Port is a PCI-PCI Bridge device with multiple distinct
49 For example, if the PCI Express Root Port native hotplug service
57 having a PCI Express Port Bus driver, which manages all populated
58 PCI Express Ports and distributes all provided service requests
60 advantages of using the PCI Express Port Bus driver are listed below:
74 Configuring the PCI Express Port Bus Driver vs. Service Drivers
77 Including the PCI Express Port Bus Driver Support into the Kernel
80 Including the PCI Express Port Bus driver depends on whether the PCI
81 Express support is included in the kernel config. The kernel will
82 automatically include the PCI Express Port Bus driver as a kernel
83 driver when the PCI Express support is enabled in the kernel.
91 PCI Express Port Bus Driver. To meet the PCI Express Port Bus Driver
96 register its service with the PCI Express Port Bus driver (see
101 the PCI Express Port Bus driver from loading a service driver.
193 switch interrupt mode on its device. The PCI Express Port Bus driver
197 is passed in when the PCI Express Port Bus driver probes each service
205 Service drivers for PCI Express Power Management (PME), Advanced
207 PCI configuration space on the PCI Express port. In all cases the
216 capability structure except the PCI Express capability structure,
220 a selected set of PCI Express Capability Registers (Link Control