drivers/eisa/pci_eisa.c

   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);