PCI driver WIP

drivers/pcid/src/pci/dev.rs

@@ -0,0 +1,46 @@
+use super::{PciBus, PciFunc};
+
+pub struct PciDev<'pci> {
+    pub bus: &'pci PciBus<'pci>,
+    pub num: u8
+}
+
+impl<'pci> PciDev<'pci> {
+    pub fn funcs(&'pci self) -> PciDevIter<'pci> {
+        PciDevIter::new(self)
+    }
+
+    pub unsafe fn read(&self, func: u8, offset: u8) -> u32 {
+        self.bus.read(self.num, func, offset)
+    }
+}
+
+pub struct PciDevIter<'pci> {
+    dev: &'pci PciDev<'pci>,
+    num: u32
+}
+
+impl<'pci> PciDevIter<'pci> {
+    pub fn new(dev: &'pci PciDev<'pci>) -> Self {
+        PciDevIter {
+            dev: dev,
+            num: 0
+        }
+    }
+}
+
+impl<'pci> Iterator for PciDevIter<'pci> {
+    type Item = PciFunc<'pci>;
+    fn next(&mut self) -> Option<Self::Item> {
+        if self.num < 8 {
+            let func = PciFunc {
+                dev: self.dev,
+                num: self.num as u8
+            };
+            self.num += 1;
+            Some(func)
+        } else {
+            None
+        }
+    }
+}