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