2 * Minimalist driver for a generic PCI-to-EISA bridge.
4 * (C) 2003 Marc Zyngier <maz@wild-wind.fr.eu.org>
6 * This code is released under the GPL version 2.
8 * Ivan Kokshaysky <ink@jurassic.park.msu.ru> :
9 * Generalisation from i82375 to PCI_CLASS_BRIDGE_EISA.
12 #include <linux/kernel.h>
13 #include <linux/device.h>
14 #include <linux/eisa.h>
15 #include <linux/pci.h>
16 #include <linux/module.h>
17 #include <linux/init.h>
19 /* There is only *one* pci_eisa device per machine, right ? */
20 static struct eisa_root_device pci_eisa_root;
22 static int __init pci_eisa_init(struct pci_dev *pdev)
26 if ((rc = pci_enable_device (pdev))) {
27 printk (KERN_ERR "pci_eisa : Could not enable device %s\n",
32 pci_eisa_root.dev = &pdev->dev;
33 pci_eisa_root.res = pdev->bus->resource[0];
34 pci_eisa_root.bus_base_addr = pdev->bus->resource[0]->start;
35 pci_eisa_root.slots = EISA_MAX_SLOTS;
36 pci_eisa_root.dma_mask = pdev->dma_mask;
37 dev_set_drvdata(pci_eisa_root.dev, &pci_eisa_root);
39 if (eisa_root_register (&pci_eisa_root)) {
40 printk (KERN_ERR "pci_eisa : Could not register EISA root\n");
48 * We have to call pci_eisa_init_early() before pnpacpi_init()/isapnp_init().
49 * Otherwise pnp resource will get enabled early and could prevent eisa
51 * Also need to make sure pci_eisa_init_early() is called after
52 * x86/pci_subsys_init().
53 * So need to use subsys_initcall_sync with it.
55 static int __init pci_eisa_init_early(void)
57 struct pci_dev *dev = NULL;
61 if ((dev->class >> 8) == PCI_CLASS_BRIDGE_EISA) {
62 ret = pci_eisa_init(dev);
69 subsys_initcall_sync(pci_eisa_init_early);