lots of progress

currently, BAR fields of IDE drives are all returning zero, and the ATA read function isn't working. i'm not sure why.
i'm going to work on VESA next, and come back to the IDE driver later

1 files changed, 38 insertions, 0 deletions

diff --git a/src/kernel/pci.h b/src/kernel/pci.h
new file mode 100644
index 0000000..1ab5936
--- /dev/null
+++ b/src/kernel/pci.h
@@ -0,0 +1,38 @@
+#ifndef PCI_H
+#define PCI_H
+
+#include <stdint.h>
+
+enum {
+  PCI_MASS_STORAGE = 0x01
+};
+
+enum {
+  PCI_IDE = 0x01
+};
+
+struct pci_device {
+  uint16_t number;
+
+  uint16_t id_vendor;
+  uint16_t id_device;
+
+  uint8_t class;
+  uint8_t subclass;
+  uint8_t iface;
+
+  uint32_t bar0;
+  uint32_t bar1;
+  uint32_t bar2;
+  uint32_t bar3;
+  //etc
+};
+
+extern uint16_t n_pci_devices;
+struct pci_device *nth_pci_device(uint16_t n);
+
+struct pci_device *find_pci_device_from_class_and_subclass(uint8_t class, uint8_t subclass, uint16_t start, uint16_t *index);
+
+void pci_init();
+
+#endif
\ No newline at end of file