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 mga_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
  64 {
  65         mgag200_kick_out_firmware_fb(pdev);
  66
  67         return drm_get_pci_dev(pdev, ent, &driver);
  68 }
  69
  70 static void mga_pci_remove(struct pci_dev *pdev)
  71 {
  72         struct drm_device *dev = pci_get_drvdata(pdev);
  73
  74         drm_put_dev(dev);
  75 }
  76
  77 static const struct file_operations mgag200_driver_fops = {
  78         .owner = THIS_MODULE,
  79         .open = drm_open,
  80         .release = drm_release,
  81         .unlocked_ioctl = drm_ioctl,
  82         .mmap = mgag200_mmap,
  83         .poll = drm_poll,
  84 #ifdef CONFIG_COMPAT
  85         .compat_ioctl = drm_compat_ioctl,
  86 #endif
  87         .read = drm_read,
  88 };
  89
  90 static 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 = mgag200_gem_free_object,
 103         .dumb_create = mgag200_dumb_create,
 104         .dumb_map_offset = mgag200_dumb_mmap_offset,
 105         .dumb_destroy = drm_gem_dumb_destroy,
 106 };
 107
 108 static struct pci_driver mgag200_pci_driver = {
 109         .name = DRIVER_NAME,
 110         .id_table = pciidlist,
 111         .probe = mga_pci_probe,
 112         .remove = mga_pci_remove,
 113 };
 114
 115 static int __init mgag200_init(void)
 116 {
 117 #ifdef CONFIG_VGA_CONSOLE
 118         if (vgacon_text_force() && mgag200_modeset == -1)
 119                 return -EINVAL;
 120 #endif
 121
 122         if (mgag200_modeset == 0)
 123                 return -EINVAL;
 124         return drm_pci_init(&driver, &mgag200_pci_driver);
 125 }
 126
 127 static void __exit mgag200_exit(void)
 128 {
 129         drm_pci_exit(&driver, &mgag200_pci_driver);
 130 }
 131
 132 module_init(mgag200_init);
 133 module_exit(mgag200_exit);
 134
 135 MODULE_AUTHOR(DRIVER_AUTHOR);
 136 MODULE_DESCRIPTION(DRIVER_DESC);
 137 MODULE_LICENSE("GPL");