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        {0,}
  40};
  41
  42MODULE_DEVICE_TABLE(pci, pciidlist);
  43
  44static void mgag200_kick_out_firmware_fb(struct pci_dev *pdev)
  45{
  46        struct apertures_struct *ap;
  47        bool primary = false;
  48
  49        ap = alloc_apertures(1);
  50        if (!ap)
  51                return;
  52
  53        ap->ranges[0].base = pci_resource_start(pdev, 0);
  54        ap->ranges[0].size = pci_resource_len(pdev, 0);
  55
  56#ifdef CONFIG_X86
  57        primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
  58#endif
  59        remove_conflicting_framebuffers(ap, "mgag200drmfb", primary);
  60        kfree(ap);
  61}
  62
  63
  64static int mga_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
  65{
  66        mgag200_kick_out_firmware_fb(pdev);
  67
  68        return drm_get_pci_dev(pdev, ent, &driver);
  69}
  70
  71static void mga_pci_remove(struct pci_dev *pdev)
  72{
  73        struct drm_device *dev = pci_get_drvdata(pdev);
  74
  75        drm_put_dev(dev);
  76}
  77
  78static const struct file_operations mgag200_driver_fops = {
  79        .owner = THIS_MODULE,
  80        .open = drm_open,
  81        .release = drm_release,
  82        .unlocked_ioctl = drm_ioctl,
  83        .mmap = mgag200_mmap,
  84        .poll = drm_poll,
  85#ifdef CONFIG_COMPAT
  86        .compat_ioctl = drm_compat_ioctl,
  87#endif
  88        .read = drm_read,
  89};
  90
  91static struct drm_driver driver = {
  92        .driver_features = DRIVER_GEM | DRIVER_MODESET,
  93        .load = mgag200_driver_load,
  94        .unload = mgag200_driver_unload,
  95        .set_busid = drm_pci_set_busid,
  96        .fops = &mgag200_driver_fops,
  97        .name = DRIVER_NAME,
  98        .desc = DRIVER_DESC,
  99        .date = DRIVER_DATE,
 100        .major = DRIVER_MAJOR,
 101        .minor = DRIVER_MINOR,
 102        .patchlevel = DRIVER_PATCHLEVEL,
 103
 104        .gem_free_object = mgag200_gem_free_object,
 105        .dumb_create = mgag200_dumb_create,
 106        .dumb_map_offset = mgag200_dumb_mmap_offset,
 107        .dumb_destroy = drm_gem_dumb_destroy,
 108};
 109
 110static struct pci_driver mgag200_pci_driver = {
 111        .name = DRIVER_NAME,
 112        .id_table = pciidlist,
 113        .probe = mga_pci_probe,
 114        .remove = mga_pci_remove,
 115};
 116
 117static int __init mgag200_init(void)
 118{
 119#ifdef CONFIG_VGA_CONSOLE
 120        if (vgacon_text_force() && mgag200_modeset == -1)
 121                return -EINVAL;
 122#endif
 123
 124        if (mgag200_modeset == 0)
 125                return -EINVAL;
 126        return drm_pci_init(&driver, &mgag200_pci_driver);
 127}
 128
 129static void __exit mgag200_exit(void)
 130{
 131        drm_pci_exit(&driver, &mgag200_pci_driver);
 132}
 133
 134module_init(mgag200_init);
 135module_exit(mgag200_exit);
 136
 137MODULE_AUTHOR(DRIVER_AUTHOR);
 138MODULE_DESCRIPTION(DRIVER_DESC);
 139MODULE_LICENSE("GPL");
 140