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 "drmP.h"
  33#include "drm.h"
  34#include "mga_drm.h"
  35#include "mga_drv.h"
  36
  37#include "drm_pciids.h"
  38
  39static int mga_driver_device_is_agp(struct drm_device * dev);
  40
  41static struct pci_device_id pciidlist[] = {
  42        mga_PCI_IDS
  43};
  44
  45static struct drm_driver driver = {
  46        .driver_features =
  47            DRIVER_USE_AGP | DRIVER_USE_MTRR | DRIVER_PCI_DMA |
  48            DRIVER_HAVE_DMA | DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED,
  49        .dev_priv_size = sizeof(drm_mga_buf_priv_t),
  50        .load = mga_driver_load,
  51        .unload = mga_driver_unload,
  52        .lastclose = mga_driver_lastclose,
  53        .dma_quiescent = mga_driver_dma_quiescent,
  54        .device_is_agp = mga_driver_device_is_agp,
  55        .get_vblank_counter = mga_get_vblank_counter,
  56        .enable_vblank = mga_enable_vblank,
  57        .disable_vblank = mga_disable_vblank,
  58        .irq_preinstall = mga_driver_irq_preinstall,
  59        .irq_postinstall = mga_driver_irq_postinstall,
  60        .irq_uninstall = mga_driver_irq_uninstall,
  61        .irq_handler = mga_driver_irq_handler,
  62        .reclaim_buffers = drm_core_reclaim_buffers,
  63        .get_map_ofs = drm_core_get_map_ofs,
  64        .get_reg_ofs = drm_core_get_reg_ofs,
  65        .ioctls = mga_ioctls,
  66        .dma_ioctl = mga_dma_buffers,
  67        .fops = {
  68                .owner = THIS_MODULE,
  69                .open = drm_open,
  70                .release = drm_release,
  71                .ioctl = drm_ioctl,
  72                .mmap = drm_mmap,
  73                .poll = drm_poll,
  74                .fasync = drm_fasync,
  75#ifdef CONFIG_COMPAT
  76                .compat_ioctl = mga_compat_ioctl,
  77#endif
  78        },
  79        .pci_driver = {
  80                .name = DRIVER_NAME,
  81                .id_table = pciidlist,
  82        },
  83
  84        .name = DRIVER_NAME,
  85        .desc = DRIVER_DESC,
  86        .date = DRIVER_DATE,
  87        .major = DRIVER_MAJOR,
  88        .minor = DRIVER_MINOR,
  89        .patchlevel = DRIVER_PATCHLEVEL,
  90};
  91
  92static int __init mga_init(void)
  93{
  94        driver.num_ioctls = mga_max_ioctl;
  95        return drm_init(&driver);
  96}
  97
  98static void __exit mga_exit(void)
  99{
 100        drm_exit(&driver);
 101}
 102
 103module_init(mga_init);
 104module_exit(mga_exit);
 105
 106MODULE_AUTHOR(DRIVER_AUTHOR);
 107MODULE_DESCRIPTION(DRIVER_DESC);
 108MODULE_LICENSE("GPL and additional rights");
 109
 110/**
 111 * Determine if the device really is AGP or not.
 112 *
 113 * In addition to the usual tests performed by \c drm_device_is_agp, this
 114 * function detects PCI G450 cards that appear to the system exactly like
 115 * AGP G450 cards.
 116 *
 117 * \param dev   The device to be tested.
 118 *
 119 * \returns
 120 * If the device is a PCI G450, zero is returned.  Otherwise 2 is returned.
 121 */
 122static int mga_driver_device_is_agp(struct drm_device * dev)
 123{
 124        const struct pci_dev *const pdev = dev->pdev;
 125
 126        /* There are PCI versions of the G450.  These cards have the
 127         * same PCI ID as the AGP G450, but have an additional PCI-to-PCI
 128         * bridge chip.  We detect these cards, which are not currently
 129         * supported by this driver, by looking at the device ID of the
 130         * bus the "card" is on.  If vendor is 0x3388 (Hint Corp) and the
 131         * device is 0x0021 (HB6 Universal PCI-PCI bridge), we reject the
 132         * device.
 133         */
 134
 135        if ((pdev->device == 0x0525) && pdev->bus->self
 136            && (pdev->bus->self->vendor == 0x3388)
 137            && (pdev->bus->self->device == 0x0021)) {
 138                return 0;
 139        }
 140
 141        return 2;
 142}
 143