drivers/char/drm/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/config.h>
  33 #include "drmP.h"
  34 #include "drm.h"
  35 #include "mga_drm.h"
  36 #include "mga_drv.h"
  37
  38
  39 #include "drm_pciids.h"
  40
  41 static int mga_driver_device_is_agp(drm_device_t * dev);
  42 static int postinit( struct drm_device *dev, unsigned long flags )
  43 {
  44         drm_mga_private_t * const dev_priv =
  45                 (drm_mga_private_t *) dev->dev_private;
  46
  47         dev_priv->mmio_base = pci_resource_start(dev->pdev, 1);
  48         dev_priv->mmio_size = pci_resource_len(dev->pdev, 1);
  49
  50         dev->counters += 3;
  51         dev->types[6] = _DRM_STAT_IRQ;
  52         dev->types[7] = _DRM_STAT_PRIMARY;
  53         dev->types[8] = _DRM_STAT_SECONDARY;
  54
  55         DRM_INFO( "Initialized %s %d.%d.%d %s on minor %d: %s\n",
  56                 DRIVER_NAME,
  57                 DRIVER_MAJOR,
  58                 DRIVER_MINOR,
  59                 DRIVER_PATCHLEVEL,
  60                 DRIVER_DATE,
  61                 dev->primary.minor,
  62                 pci_pretty_name(dev->pdev)
  63                 );
  64         return 0;
  65 }
  66
  67 static int version( drm_version_t *version )
  68 {
  69         int len;
  70
  71         version->version_major = DRIVER_MAJOR;
  72         version->version_minor = DRIVER_MINOR;
  73         version->version_patchlevel = DRIVER_PATCHLEVEL;
  74         DRM_COPY( version->name, DRIVER_NAME );
  75         DRM_COPY( version->date, DRIVER_DATE );
  76         DRM_COPY( version->desc, DRIVER_DESC );
  77         return 0;
  78 }
  79
  80 static struct pci_device_id pciidlist[] = {
  81         mga_PCI_IDS
  82 };
  83
  84 extern drm_ioctl_desc_t mga_ioctls[];
  85 extern int mga_max_ioctl;
  86
  87 static struct drm_driver driver = {
  88         .driver_features = DRIVER_USE_AGP | DRIVER_REQUIRE_AGP | DRIVER_USE_MTRR | DRIVER_HAVE_DMA | DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_IRQ_VBL,
  89         .preinit = mga_driver_preinit,
  90         .postcleanup = mga_driver_postcleanup,
  91         .pretakedown = mga_driver_pretakedown,
  92         .dma_quiescent = mga_driver_dma_quiescent,
  93         .device_is_agp = mga_driver_device_is_agp,
  94         .vblank_wait = mga_driver_vblank_wait,
  95         .irq_preinstall = mga_driver_irq_preinstall,
  96         .irq_postinstall = mga_driver_irq_postinstall,
  97         .irq_uninstall = mga_driver_irq_uninstall,
  98         .irq_handler = mga_driver_irq_handler,
  99         .reclaim_buffers = drm_core_reclaim_buffers,
 100         .get_map_ofs = drm_core_get_map_ofs,
 101         .get_reg_ofs = drm_core_get_reg_ofs,
 102         .postinit = postinit,
 103         .version = version,
 104         .ioctls = mga_ioctls,
 105         .dma_ioctl = mga_dma_buffers,
 106         .fops = {
 107                 .owner = THIS_MODULE,
 108                 .open = drm_open,
 109                 .release = drm_release,
 110                 .ioctl = drm_ioctl,
 111                 .mmap = drm_mmap,
 112                 .poll = drm_poll,
 113                 .fasync = drm_fasync,
 114 #ifdef CONFIG_COMPAT
 115                 .compat_ioctl = mga_compat_ioctl,
 116 #endif
 117         },
 118         .pci_driver = {
 119                 .name = DRIVER_NAME,
 120                 .id_table = pciidlist,
 121         }
 122 };
 123
 124 static int __init mga_init(void)
 125 {
 126         driver.num_ioctls = mga_max_ioctl;
 127         return drm_init(&driver);
 128 }
 129
 130 static void __exit mga_exit(void)
 131 {
 132         drm_exit(&driver);
 133 }
 134
 135 module_init(mga_init);
 136 module_exit(mga_exit);
 137
 138 MODULE_AUTHOR( DRIVER_AUTHOR );
 139 MODULE_DESCRIPTION( DRIVER_DESC );
 140 MODULE_LICENSE("GPL and additional rights");
 141
 142 /**
 143  * Determine if the device really is AGP or not.
 144  *
 145  * In addition to the usual tests performed by \c drm_device_is_agp, this
 146  * function detects PCI G450 cards that appear to the system exactly like
 147  * AGP G450 cards.
 148  *
 149  * \param dev   The device to be tested.
 150  *
 151  * \returns
 152  * If the device is a PCI G450, zero is returned.  Otherwise 2 is returned.
 153  */
 154 int mga_driver_device_is_agp(drm_device_t * dev)
 155 {
 156         const struct pci_dev * const pdev = dev->pdev;
 157
 158
 159         /* There are PCI versions of the G450.  These cards have the
 160          * same PCI ID as the AGP G450, but have an additional PCI-to-PCI
 161          * bridge chip.  We detect these cards, which are not currently
 162          * supported by this driver, by looking at the device ID of the
 163          * bus the "card" is on.  If vendor is 0x3388 (Hint Corp) and the
 164          * device is 0x0021 (HB6 Universal PCI-PCI bridge), we reject the
 165          * device.
 166          */
 167
 168         if ( (pdev->device == 0x0525)
 169              && (pdev->bus->self->vendor == 0x3388)
 170              && (pdev->bus->self->device == 0x0021) ) {
 171                 return 0;
 172         }
 173
 174         return 2;
 175 }