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Diffstat (limited to 'src/devices/pciexp_device.c')
-rw-r--r--src/devices/pciexp_device.c60
1 files changed, 60 insertions, 0 deletions
diff --git a/src/devices/pciexp_device.c b/src/devices/pciexp_device.c
new file mode 100644
index 0000000000..5422a8eb18
--- /dev/null
+++ b/src/devices/pciexp_device.c
@@ -0,0 +1,60 @@
+/* (c) 2005 Linux Networx GPL see COPYING for details */
+
+#include <console/console.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <device/pciexp.h>
+
+
+static void pciexp_tune_dev(device_t dev)
+{
+ unsigned cap;
+
+ cap = pci_find_capability(dev, PCI_CAP_ID_PCIE);
+ if (!cap) {
+ /* error... */
+ return;
+ }
+ printk_debug("PCIEXP: tunning %s\n", dev_path(dev));
+#warning "IMPLEMENT PCI EXPRESS TUNING"
+}
+
+unsigned int pciexp_scan_bus(struct bus *bus,
+ unsigned min_devfn, unsigned max_devfn,
+ unsigned int max)
+{
+ device_t child;
+ max = pci_scan_bus(bus, min_devfn, max_devfn, max);
+ for(child = bus->children; child; child = child->sibling) {
+ if ( (child->path.u.pci.devfn < min_devfn) ||
+ (child->path.u.pci.devfn > max_devfn))
+ {
+ continue;
+ }
+ pciexp_tune_dev(child);
+ }
+ return max;
+}
+
+
+unsigned int pciexp_scan_bridge(device_t dev, unsigned int max)
+{
+ return do_pci_scan_bridge(dev, max, pciexp_scan_bus);
+}
+
+/** Default device operations for PCI Express bridges */
+static struct pci_operations pciexp_bus_ops_pci = {
+ .set_subsystem = 0,
+};
+
+struct device_operations default_pciexp_ops_bus = {
+ .read_resources = pci_bus_read_resources,
+ .set_resources = pci_dev_set_resources,
+ .enable_resources = pci_bus_enable_resources,
+ .init = 0,
+ .scan_bus = pciexp_scan_bridge,
+ .enable = 0,
+ .reset_bus = pci_bus_reset,
+ .ops_pci = &pciexp_bus_ops_pci,
+};