Struct PciHeader

pub struct PciHeader(/* private fields */);

Every PCI configuration region starts with a header made up of two parts:

• a predefined region that identify the function (bytes 0x00..0x10)
• a device-dependent region that depends on the Header Type field

The predefined region is of the form:

    32                            16                              0
     +-----------------------------+------------------------------+
     |       Device ID             |       Vendor ID              | 0x00
     |                             |                              |
     +-----------------------------+------------------------------+
     |         Status              |       Command                | 0x04
     |                             |                              |
     +-----------------------------+---------------+--------------+
     |               Class Code                    |   Revision   | 0x08
     |                                             |      ID      |
     +--------------+--------------+---------------+--------------+
     |     BIST     |    Header    |    Latency    |  Cacheline   | 0x0c
     |              |     type     |     timer     |    size      |
     +--------------+--------------+---------------+--------------+

Implementations

impl PciHeader

pub fn new(address: PciAddress) -> PciHeader

pub fn address(&self) -> PciAddress

pub fn id(&self, access: impl ConfigRegionAccess) -> (VendorId, DeviceId)

pub fn header_type(&self, access: impl ConfigRegionAccess) -> HeaderType

pub fn has_multiple_functions(&self, access: impl ConfigRegionAccess) -> bool

pub fn revision_and_class( &self, access: impl ConfigRegionAccess, ) -> (DeviceRevision, BaseClass, SubClass, Interface)

pub fn status(&self, access: impl ConfigRegionAccess) -> StatusRegister

pub fn command(&self, access: impl ConfigRegionAccess) -> CommandRegister

pub fn update_command<F>(&mut self, access: impl ConfigRegionAccess, f: F)

where F: FnOnce(CommandRegister) -> CommandRegister,