drivers/misc/pvpanic/pvpanic-pci.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  *  Pvpanic PCI Device Support
   4  *
   5  *  Copyright (C) 2021 Oracle.
   6  */
   7
   8 #include <linux/kernel.h>
   9 #include <linux/module.h>
  10 #include <linux/pci.h>
  11 #include <linux/types.h>
  12 #include <linux/slab.h>
  13
  14 #include <uapi/misc/pvpanic.h>
  15
  16 #include "pvpanic.h"
  17
  18 #define PCI_VENDOR_ID_REDHAT             0x1b36
  19 #define PCI_DEVICE_ID_REDHAT_PVPANIC     0x0011
  20
  21 MODULE_AUTHOR("Mihai Carabas <[email protected]>");
  22 MODULE_DESCRIPTION("pvpanic device driver");
  23 MODULE_LICENSE("GPL");
  24
  25 static int pvpanic_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
  26 {
  27         void __iomem *base;
  28         int ret;
  29
  30         ret = pcim_enable_device(pdev);
  31         if (ret < 0)
  32                 return ret;
  33
  34         base = pcim_iomap(pdev, 0, 0);
  35         if (!base)
  36                 return -ENOMEM;
  37
  38         return devm_pvpanic_probe(&pdev->dev, base);
  39 }
  40
  41 static const struct pci_device_id pvpanic_pci_id_tbl[]  = {
  42         { PCI_DEVICE(PCI_VENDOR_ID_REDHAT, PCI_DEVICE_ID_REDHAT_PVPANIC)},
  43         {}
  44 };
  45 MODULE_DEVICE_TABLE(pci, pvpanic_pci_id_tbl);
  46
  47 static struct pci_driver pvpanic_pci_driver = {
  48         .name =         "pvpanic-pci",
  49         .id_table =     pvpanic_pci_id_tbl,
  50         .probe =        pvpanic_pci_probe,
  51         .driver = {
  52                 .dev_groups = pvpanic_dev_groups,
  53         },
  54 };
  55 module_pci_driver(pvpanic_pci_driver);