drivers/gpu/drm/mgag200/mgag200_drv.c

   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  */
  24 int mgag200_modeset = -1;
  25
  26 MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
  27 module_param_named(modeset, mgag200_modeset, int, 0400);
  28
  29 static struct drm_driver driver;
  30
  31 static DEFINE_PCI_DEVICE_TABLE(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         {0,}
  39 };
  40
  41 MODULE_DEVICE_TABLE(pci, pciidlist);
  42
  43 static void mgag200_kick_out_firmware_fb(struct pci_dev *pdev)
  44 {
  45         struct apertures_struct *ap;
  46         bool primary = false;
  47
  48         ap = alloc_apertures(1);
  49         if (!ap)
  50                 return;
  51
  52         ap->ranges[0].base = pci_resource_start(pdev, 0);
  53         ap->ranges[0].size = pci_resource_len(pdev, 0);
  54
  55 #ifdef CONFIG_X86
  56         primary = pdev->resource[PCI_ROM_RESOURCE].flags & IORESOURCE_ROM_SHADOW;
  57 #endif
  58         remove_conflicting_framebuffers(ap, "mgag200drmfb", primary);
  59         kfree(ap);
  60 }
  61
  62
  63 static int __devinit
  64 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
  71 static 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
  78 static 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         .fasync = drm_fasync,
  86 #ifdef CONFIG_COMPAT
  87         .compat_ioctl = drm_compat_ioctl,
  88 #endif
  89         .read = drm_read,
  90 };
  91
  92 static struct drm_driver driver = {
  93         .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_USE_MTRR,
  94         .load = mgag200_driver_load,
  95         .unload = mgag200_driver_unload,
  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_init_object = mgag200_gem_init_object,
 105         .gem_free_object = mgag200_gem_free_object,
 106         .dumb_create = mgag200_dumb_create,
 107         .dumb_map_offset = mgag200_dumb_mmap_offset,
 108         .dumb_destroy = mgag200_dumb_destroy,
 109 };
 110
 111 static struct pci_driver mgag200_pci_driver = {
 112         .name = DRIVER_NAME,
 113         .id_table = pciidlist,
 114         .probe = mga_pci_probe,
 115         .remove = mga_pci_remove,
 116 };
 117
 118 static int __init mgag200_init(void)
 119 {
 120 #ifdef CONFIG_VGA_CONSOLE
 121         if (vgacon_text_force() && mgag200_modeset == -1)
 122                 return -EINVAL;
 123 #endif
 124
 125         if (mgag200_modeset == 0)
 126                 return -EINVAL;
 127         return drm_pci_init(&driver, &mgag200_pci_driver);
 128 }
 129
 130 static void __exit mgag200_exit(void)
 131 {
 132         drm_pci_exit(&driver, &mgag200_pci_driver);
 133 }
 134
 135 module_init(mgag200_init);
 136 module_exit(mgag200_exit);
 137
 138 MODULE_AUTHOR(DRIVER_AUTHOR);
 139 MODULE_DESCRIPTION(DRIVER_DESC);
 140 MODULE_LICENSE("GPL");