31 lines
747 B
Rust
31 lines
747 B
Rust
use std::ops::DerefMut;
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use super::{PciDev, PciHeader};
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pub struct PciFunc<'pci> {
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pub dev: &'pci PciDev<'pci>,
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pub num: u8
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}
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impl<'pci> PciFunc<'pci> {
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pub fn header(&self) -> Option<PciHeader> {
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if unsafe { self.read(0) } != 0xFFFFFFFF {
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let mut header = PciHeader::default();
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{
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let dwords = header.deref_mut();
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dwords.iter_mut().fold(0usize, |offset, dword| {
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*dword = unsafe { self.read(offset as u8) };
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offset + 4
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});
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}
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Some(header)
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} else {
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None
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}
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}
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pub unsafe fn read(&self, offset: u8) -> u32 {
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self.dev.read(self.num, offset)
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}
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}
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