+#include <pci.h>
+
+struct pci_bother {
+ int bus, dev, fn;
+ unsigned short origstate;
+};
+
+static struct pci_bother bothers[MAX_BOTHERS];
+static int nbothers = 0;
+
+int pci_bother_add(pci_dev_t *dev)
+{
+ if (nbothers == MAX_BOTHERS)
+ return -1;
+
+ bothers[nbothers].bus = dev->bus;
+ bothers[nbothers].dev = dev->dev;
+ bothers[nbothers].fn = dev->fn;
+
+ bothers[nbothers].origstate = pci_read16(dev->bus, dev->dev, dev->fn, 0x04);
+
+ nbothers++;
+
+ return 0;
+}
+
+void pci_bother_all()
+{
+ int i;
+
+ for (i = 0; i < nbothers; i++)
+ pci_write16(bothers[i].bus, bothers[i].dev, bothers[i].fn, 0x0);
+}
+
+void pci_unbother_all()
+{
+ int i;
+
+ for (i = 0; i < nbothers; i++)
+ pci_write16(bothers[i].bus, bothers[i].dev, bothers[i].fn, bothers[i].origstate);
+}