+
+struct pci_device *
+pci_find_init_device(const struct pci_device_id *ids, void *arg)
+{
+ struct pci_device *pci;
+ foreachpci(pci) {
+ if (pci_init_device(ids, pci, arg) == 0)
+ return pci;
+ }
+ return NULL;
+}
+
+void
+pci_reboot(void)
+{
+ u8 v = inb(PORT_PCI_REBOOT) & ~6;
+ outb(v|2, PORT_PCI_REBOOT); /* Request hard reset */
+ udelay(50);
+ outb(v|6, PORT_PCI_REBOOT); /* Actually do the reset */
+ udelay(50);
+}
+
+// helper functions to access pci mmio bars from real mode
+
+u32 VISIBLE32FLAT
+pci_readl_32(u32 addr)
+{
+ dprintf(3, "32: pci read : %x\n", addr);
+ return readl((void*)addr);
+}
+
+u32 pci_readl(u32 addr)
+{
+ if (MODESEGMENT) {
+ dprintf(3, "16: pci read : %x\n", addr);
+ extern void _cfunc32flat_pci_readl_32(u32 addr);
+ return call32(_cfunc32flat_pci_readl_32, addr, -1);
+ } else {
+ return pci_readl_32(addr);
+ }
+}
+
+struct reg32 {
+ u32 addr;
+ u32 data;
+};
+
+void VISIBLE32FLAT
+pci_writel_32(struct reg32 *reg32)
+{
+ dprintf(3, "32: pci write: %x, %x (%p)\n", reg32->addr, reg32->data, reg32);
+ writel((void*)(reg32->addr), reg32->data);
+}
+
+void pci_writel(u32 addr, u32 val)
+{
+ struct reg32 reg32 = { .addr = addr, .data = val };
+ if (MODESEGMENT) {
+ dprintf(3, "16: pci write: %x, %x (%x:%p)\n",
+ reg32.addr, reg32.data, GET_SEG(SS), ®32);
+ void *flatptr = MAKE_FLATPTR(GET_SEG(SS), ®32);
+ extern void _cfunc32flat_pci_writel_32(struct reg32 *reg32);
+ call32(_cfunc32flat_pci_writel_32, (u32)flatptr, -1);
+ } else {
+ pci_writel_32(®32);
+ }
+}