drivers/gpu/drm/mga/mga_drv.c

   1 /* mga_drv.c -- Matrox G200/G400 driver -*- linux-c -*-
   2  * Created: Mon Dec 13 01:56:22 1999 by jhartmann@precisioninsight.com
   3  *
   4  * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
   5  * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
   6  * All Rights Reserved.
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a
   9  * copy of this software and associated documentation files (the "Software"),
  10  * to deal in the Software without restriction, including without limitation
  11  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  12  * and/or sell copies of the Software, and to permit persons to whom the
  13  * Software is furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice (including the next
  16  * paragraph) shall be included in all copies or substantial portions of the
  17  * Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  20  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  22  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  23  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  24  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  25  * OTHER DEALINGS IN THE SOFTWARE.
  26  *
  27  * Authors:
  28  *    Rickard E. (Rik) Faith <faith@valinux.com>
  29  *    Gareth Hughes <gareth@valinux.com>
  30  */
  31
  32 #include <linux/module.h>
  33
  34 #include <drm/drmP.h>
  35 #include <drm/mga_drm.h>
  36 #include "mga_drv.h"
  37
  38 #include <drm/drm_pciids.h>
  39
  40 static int mga_driver_device_is_agp(struct drm_device *dev);
  41
  42 static struct pci_device_id pciidlist[] = {
  43         mga_PCI_IDS
  44 };
  45
  46 static const struct file_operations mga_driver_fops = {
  47         .owner = THIS_MODULE,
  48         .open = drm_open,
  49         .release = drm_release,
  50         .unlocked_ioctl = drm_ioctl,
  51         .mmap = drm_legacy_mmap,
  52         .poll = drm_poll,
  53 #ifdef CONFIG_COMPAT
  54         .compat_ioctl = mga_compat_ioctl,
  55 #endif
  56         .llseek = noop_llseek,
  57 };
  58
  59 static struct drm_driver driver = {
  60         .driver_features =
  61             DRIVER_USE_AGP | DRIVER_PCI_DMA | DRIVER_LEGACY |
  62             DRIVER_HAVE_DMA | DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED,
  63         .dev_priv_size = sizeof(drm_mga_buf_priv_t),
  64         .load = mga_driver_load,
  65         .unload = mga_driver_unload,
  66         .lastclose = mga_driver_lastclose,
  67         .set_busid = drm_pci_set_busid,
  68         .dma_quiescent = mga_driver_dma_quiescent,
  69         .device_is_agp = mga_driver_device_is_agp,
  70         .get_vblank_counter = mga_get_vblank_counter,
  71         .enable_vblank = mga_enable_vblank,
  72         .disable_vblank = mga_disable_vblank,
  73         .irq_preinstall = mga_driver_irq_preinstall,
  74         .irq_postinstall = mga_driver_irq_postinstall,
  75         .irq_uninstall = mga_driver_irq_uninstall,
  76         .irq_handler = mga_driver_irq_handler,
  77         .ioctls = mga_ioctls,
  78         .dma_ioctl = mga_dma_buffers,
  79         .fops = &mga_driver_fops,
  80         .name = DRIVER_NAME,
  81         .desc = DRIVER_DESC,
  82         .date = DRIVER_DATE,
  83         .major = DRIVER_MAJOR,
  84         .minor = DRIVER_MINOR,
  85         .patchlevel = DRIVER_PATCHLEVEL,
  86 };
  87
  88 static struct pci_driver mga_pci_driver = {
  89         .name = DRIVER_NAME,
  90         .id_table = pciidlist,
  91 };
  92
  93 static int __init mga_init(void)
  94 {
  95         driver.num_ioctls = mga_max_ioctl;
  96         return drm_pci_init(&driver, &mga_pci_driver);
  97 }
  98
  99 static void __exit mga_exit(void)
 100 {
 101         drm_pci_exit(&driver, &mga_pci_driver);
 102 }
 103
 104 module_init(mga_init);
 105 module_exit(mga_exit);
 106
 107 MODULE_AUTHOR(DRIVER_AUTHOR);
 108 MODULE_DESCRIPTION(DRIVER_DESC);
 109 MODULE_LICENSE("GPL and additional rights");
 110
 111 /**
 112  * Determine if the device really is AGP or not.
 113  *
 114  * In addition to the usual tests performed by \c drm_device_is_agp, this
 115  * function detects PCI G450 cards that appear to the system exactly like
 116  * AGP G450 cards.
 117  *
 118  * \param dev   The device to be tested.
 119  *
 120  * \returns
 121  * If the device is a PCI G450, zero is returned.  Otherwise 2 is returned.
 122  */
 123 static int mga_driver_device_is_agp(struct drm_device *dev)
 124 {
 125         const struct pci_dev *const pdev = dev->pdev;
 126
 127         /* There are PCI versions of the G450.  These cards have the
 128          * same PCI ID as the AGP G450, but have an additional PCI-to-PCI
 129          * bridge chip.  We detect these cards, which are not currently
 130          * supported by this driver, by looking at the device ID of the
 131          * bus the "card" is on.  If vendor is 0x3388 (Hint Corp) and the
 132          * device is 0x0021 (HB6 Universal PCI-PCI bridge), we reject the
 133          * device.
 134          */
 135
 136         if ((pdev->device == 0x0525) && pdev->bus->self
 137             && (pdev->bus->self->vendor == 0x3388)
 138             && (pdev->bus->self->device == 0x0021)) {
 139                 return 0;
 140         }
 141
 142         return 2;
 143 }