Struct PciGenericDeviceHeader

Source

pub struct PciGenericDeviceHeader {
    pub base_addr: [u32; 6],
    pub cardbus_cis_ptr: u32,
    pub subsystem_device_id: u16,
    pub subsystem_vendor_id: u16,
    pub expansion_rom_base_addr: u32,
    pub capabilities_ptr: u16,
    pub max_latency: u8,
    pub min_grant: u8,
    pub interrupt_pin: u8,
    pub interrupt_line: u8,
}

Expand description

The header for generic PCI devices.

All fields are the raw values of every non-reserved register part in the configuration space.

The format of the header in PCI configuration space is the following.

+----------+---------+-------------+--------------+----------------+----------------+
| Register | Offset  | Bits 31-24  | Bits 23-16   | Bits 15-8      | Bits 7-0       |
+----------+---------+-------------+--------------+----------------+----------------+
|   0x4    |   0x10  |                 Base address #0 (BAR0)                       |
|   0x5    |   0x14  |                 Base address #1 (BAR1)                       |
|   0x6    |   0x18  |                 Base address #2 (BAR2)                       |
|   0x7    |   0x1C  |                 Base address #3 (BAR3)                       |
|   0x8    |   0x20  |                 Base address #4 (BAR4)                       |
|   0x9    |   0x24  |                 Base address #5 (BAR5)                       |
|   0xA    |   0x28  |                 Cardbus CIS Pointer                          |
|   0xB    |   0x2C  |    Subsystem ID            |     Subsystem Vendor ID         |
|   0xC    |   0x30  |             Expansion ROM base address                       |
|   0xD    |   0x34  |                  Reserved  | Capabilities Pointer            |
|   0xE    |   0x38  |                         Reserved                             |
|   0xF    |   0x3C  | Max latency |   Min Grant  | Interrupt PIN  | Interrupt Line |
+----------+---------+-------------+--------------+----------------+----------------+

Fields§

§base_addr: [u32; 6]§cardbus_cis_ptr: u32§subsystem_device_id: u16§subsystem_vendor_id: u16§expansion_rom_base_addr: u32§capabilities_ptr: u16§max_latency: u8§min_grant: u8§interrupt_pin: u8§interrupt_line: u8