LXR linux/drivers/gpu/drm/mgag200/mgag200

   1/*
   2 * Copyright 2012 Red Hat
   3 *
   4 * This file is subject to the terms and conditions of the GNU General
   5 * Public License version 2. See the file COPYING in the main
   6 * directory of this archive for more details.
   7 *
   8 * Authors: Matthew Garrett
   9 *          Dave Airlie
  10 */
  11#include <linux/module.h>
  12#include <linux/console.h>
  13#include <drm/drmP.h>
  14
  15#include "mgag200_drv.h"
  16
  17#include <drm/drm_pciids.h>
  18
  19/*
  20 * This is the generic driver code. This binds the driver to the drm core,
  21 * which then performs further device association and calls our graphics init
  22 * functions
  23 */
  24int mgag200_modeset = -1;
  25
  26MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
  27module_param_named(modeset, mgag200_modeset, int, 0400);
  28
  29static struct drm_driver driver;
  30
  31static const struct pci_device_id pciidlist[] = {
  32        { PCI_VENDOR_ID_MATROX, 0x522, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_SE_A },
  33        { PCI_VENDOR_ID_MATROX, 0x524, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_SE_B },
  34        { PCI_VENDOR_ID_MATROX, 0x530, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EV },
  35        { PCI_VENDOR_ID_MATROX, 0x532, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_WB },
  36        { PCI_VENDOR_ID_MATROX, 0x533, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EH },
  37        { PCI_VENDOR_ID_MATROX, 0x534, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_ER },
  38        { PCI_VENDOR_ID_MATROX, 0x536, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EW3 },
  39        { PCI_VENDOR_ID_MATROX, 0x538, PCI_ANY_ID, PCI_ANY_ID, 0, 0, G200_EH3 },
  40        {0,}
  41};
  42
  43MODULE_DEVICE_TABLE(pci, pciidlist);
  44
  45static void mgag200_kick_out_firmware_fb(struct pci_dev *pdev)
  46{
  47        struct apertures_struct *ap;
  48        bool primary = false;
  49
  50        ap = alloc_apertures(1);
  51        if (!ap)
  52                return;
  53
  54        ap->ranges[0].base = pci_resource_start(pdev, 0);
  55        ap->ranges[0].size = pci_resource_len(pdev, 0);
  56
  57#ifdef CONFIG_X86
  58        primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
  59#endif
  60        drm_fb_helper_remove_conflicting_framebuffers(ap, "mgag200drmfb", primary);
  61        kfree(ap);
  62}
  63
  64
  65static int mga_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
  66{
  67        mgag200_kick_out_firmware_fb(pdev);
  68
  69        return drm_get_pci_dev(pdev, ent, &driver);
  70}
  71
  72static void mga_pci_remove(struct pci_dev *pdev)
  73{
  74        struct drm_device *dev = pci_get_drvdata(pdev);
  75
  76        drm_put_dev(dev);
  77}
  78
  79static const struct file_operations mgag200_driver_fops = {
  80        .owner = THIS_MODULE,
  81        .open = drm_open,
  82        .release = drm_release,
  83        .unlocked_ioctl = drm_ioctl,
  84        .mmap = mgag200_mmap,
  85        .poll = drm_poll,
  86        .compat_ioctl = drm_compat_ioctl,
  87        .read = drm_read,
  88};
  89
  90static struct drm_driver driver = {
  91        .driver_features = DRIVER_GEM | DRIVER_MODESET,
  92        .load = mgag200_driver_load,
  93        .unload = mgag200_driver_unload,
  94        .fops = &mgag200_driver_fops,
  95        .name = DRIVER_NAME,
  96        .desc = DRIVER_DESC,
  97        .date = DRIVER_DATE,
  98        .major = DRIVER_MAJOR,
  99        .minor = DRIVER_MINOR,
 100        .patchlevel = DRIVER_PATCHLEVEL,
 101
 102        .gem_free_object_unlocked = mgag200_gem_free_object,
 103        .dumb_create = mgag200_dumb_create,
 104        .dumb_map_offset = mgag200_dumb_mmap_offset,
 105};
 106
 107static struct pci_driver mgag200_pci_driver = {
 108        .name = DRIVER_NAME,
 109        .id_table = pciidlist,
 110        .probe = mga_pci_probe,
 111        .remove = mga_pci_remove,
 112};
 113
 114static int __init mgag200_init(void)
 115{
 116        if (vgacon_text_force() && mgag200_modeset == -1)
 117                return -EINVAL;
 118
 119        if (mgag200_modeset == 0)
 120                return -EINVAL;
 121
 122        return pci_register_driver(&mgag200_pci_driver);
 123}
 124
 125static void __exit mgag200_exit(void)
 126{
 127        pci_unregister_driver(&mgag200_pci_driver);
 128}
 129
 130module_init(mgag200_init);
 131module_exit(mgag200_exit);
 132
 133MODULE_AUTHOR(DRIVER_AUTHOR);
 134MODULE_DESCRIPTION(DRIVER_DESC);
 135MODULE_LICENSE("GPL");
 136