xref: /openbmc/linux/drivers/eisa/pci_eisa.c (revision b6dcefde)
1 /*
2  * Minimalist driver for a generic PCI-to-EISA bridge.
3  *
4  * (C) 2003 Marc Zyngier <maz@wild-wind.fr.eu.org>
5  *
6  * This code is released under the GPL version 2.
7  *
8  * Ivan Kokshaysky <ink@jurassic.park.msu.ru> :
9  * Generalisation from i82375 to PCI_CLASS_BRIDGE_EISA.
10  */
11 
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>
18 
19 /* There is only *one* pci_eisa device per machine, right ? */
20 static struct eisa_root_device pci_eisa_root;
21 
22 static int __init pci_eisa_init(struct pci_dev *pdev,
23 				const struct pci_device_id *ent)
24 {
25 	int rc;
26 
27 	if ((rc = pci_enable_device (pdev))) {
28 		printk (KERN_ERR "pci_eisa : Could not enable device %s\n",
29 			pci_name(pdev));
30 		return rc;
31 	}
32 
33 	pci_eisa_root.dev              = &pdev->dev;
34 	pci_eisa_root.res	       = pdev->bus->resource[0];
35 	pci_eisa_root.bus_base_addr    = pdev->bus->resource[0]->start;
36 	pci_eisa_root.slots	       = EISA_MAX_SLOTS;
37 	pci_eisa_root.dma_mask         = pdev->dma_mask;
38 	dev_set_drvdata(pci_eisa_root.dev, &pci_eisa_root);
39 
40 	if (eisa_root_register (&pci_eisa_root)) {
41 		printk (KERN_ERR "pci_eisa : Could not register EISA root\n");
42 		return -1;
43 	}
44 
45 	return 0;
46 }
47 
48 static struct pci_device_id pci_eisa_pci_tbl[] = {
49 	{ PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
50 	  PCI_CLASS_BRIDGE_EISA << 8, 0xffff00, 0 },
51 	{ 0, }
52 };
53 
54 static struct pci_driver pci_eisa_driver = {
55 	.name		= "pci_eisa",
56 	.id_table	= pci_eisa_pci_tbl,
57 	.probe		= pci_eisa_init,
58 };
59 
60 static int __init pci_eisa_init_module (void)
61 {
62 	return pci_register_driver (&pci_eisa_driver);
63 }
64 
65 device_initcall(pci_eisa_init_module);
66 MODULE_DEVICE_TABLE(pci, pci_eisa_pci_tbl);
67