LXR linux/drivers/gpu/drm/mga/mga

   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
  40static int mga_driver_device_is_agp(struct drm_device *dev);
  41
  42static struct pci_device_id pciidlist[] = {
  43        mga_PCI_IDS
  44};
  45
  46static 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
  59static struct drm_driver driver = {
  60        .driver_features =
  61            DRIVER_USE_AGP | DRIVER_PCI_DMA |
  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
  88static struct pci_driver mga_pci_driver = {
  89        .name = DRIVER_NAME,
  90        .id_table = pciidlist,
  91};
  92
  93static int __init mga_init(void)
  94{
  95        driver.num_ioctls = mga_max_ioctl;
  96        return drm_pci_init(&driver, &mga_pci_driver);
  97}
  98
  99static void __exit mga_exit(void)
 100{
 101        drm_pci_exit(&driver, &mga_pci_driver);
 102}
 103
 104module_init(mga_init);
 105module_exit(mga_exit);
 106
 107MODULE_AUTHOR(DRIVER_AUTHOR);
 108MODULE_DESCRIPTION(DRIVER_DESC);
 109MODULE_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 */
 123static 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}
 144