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19 .Nd Extensible Host Controller Interface Driver
25 driver supports PCI devices that implement versions 1.0 and 1.1 of the
26 Extensible Host Controller Inteface Specification.
27 These devices provide support for USB 3.0, USB 2.x, and USB 1.x devices and is
28 integrated into the broader illumos USB Architecture (USBA).
32 driver supports all four USB transfer types:
34 .Sy control transfers ,
35 .Sy interrupt transfers ,
37 .Sy isochronous transfers .
39 Administrators do not interact with the
42 USB devices are managed with
46 for more information on how to specifically manage USB devices and how
47 they are laid out in the system.
49 is only used to manage devices at a USB level.
50 For example, a USB NIC would still be managed with
52 at a networking level.
54 On some x86 systems USB ports may be routed to either an instance of the
56 driver or an instance of the
59 By default, all such ports are routed to the
61 driver, allowing those devices to operate at USB 3.x speed by default.
62 This is most common on Intel platforms and chipsets.
63 While this is controlled with the
65 property discussed below, changing it may not be sufficient to change
67 The BIOS or ACPI data for many x86 systems may toggle this automatically.
71 driver supports the following properties which may be tuned in the
80 property determines whether or not USB ports are re-routed to the
83 The default behavior is to route such ports.
84 To disable this, the property should be set to
86 Any other value, or the lack of the property, cause the default behavior
92 driver is only supported on
97 .It Pa /kernel/drv/xhci
98 32-bit device driver (x86).
99 .It Pa /kernel/drv/amd64/xhci
100 64-bit device driver (x86).
101 .It Pa /kernel/drv/xhci.conf
102 Driver configuration file.