sys/dev/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 /*-
   5  * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
   6  * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
   7  * All Rights Reserved.
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining a
  10  * copy of this software and associated documentation files (the "Software"),
  11  * to deal in the Software without restriction, including without limitation
  12  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  13  * and/or sell copies of the Software, and to permit persons to whom the
  14  * Software is furnished to do so, subject to the following conditions:
  15  *
  16  * The above copyright notice and this permission notice (including the next
  17  * paragraph) shall be included in all copies or substantial portions of the
  18  * Software.
  19  *
  20  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  21  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  23  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  24  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  25  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  26  * OTHER DEALINGS IN THE SOFTWARE.
  27  *
  28  * Authors:
  29  *    Rickard E. (Rik) Faith <faith@valinux.com>
  30  *    Gareth Hughes <gareth@valinux.com>
  31  *
  32  */
  33
  34 #include "dev/drm/drmP.h"
  35 #include "dev/drm/drm.h"
  36 #include "dev/drm/mga_drm.h"
  37 #include "dev/drm/mga_drv.h"
  38 #include "dev/drm/drm_pciids.h"
  39
  40 /* drv_PCI_IDs comes from drm_pciids.h, generated from drm_pciids.txt. */
  41 static drm_pci_id_list_t mga_pciidlist[] = {
  42         mga_PCI_IDS
  43 };
  44
  45 /**
  46  * Determine if the device really is AGP or not.
  47  *
  48  * In addition to the usual tests performed by \c drm_device_is_agp, this
  49  * function detects PCI G450 cards that appear to the system exactly like
  50  * AGP G450 cards.
  51  *
  52  * \param dev   The device to be tested.
  53  *
  54  * \returns
  55  * If the device is a PCI G450, zero is returned.  Otherwise non-zero is
  56  * returned.
  57  *
  58  * \bug
  59  * This function needs to be filled in!  The implementation in
  60  * linux-core/mga_drv.c shows what needs to be done.
  61  */
  62 static int mga_driver_device_is_agp(struct drm_device * dev)
  63 {
  64         device_t bus;
  65
  66         /* There are PCI versions of the G450.  These cards have the
  67          * same PCI ID as the AGP G450, but have an additional PCI-to-PCI
  68          * bridge chip.  We detect these cards, which are not currently
  69          * supported by this driver, by looking at the device ID of the
  70          * bus the "card" is on.  If vendor is 0x3388 (Hint Corp) and the
  71          * device is 0x0021 (HB6 Universal PCI-PCI bridge), we reject the
  72          * device.
  73          */
  74 #if __FreeBSD_version >= 700010
  75         bus = device_get_parent(device_get_parent(dev->device));
  76 #else
  77         bus = device_get_parent(dev->device);
  78 #endif
  79         if (pci_get_device(dev->device) == 0x0525 &&
  80             pci_get_vendor(bus) == 0x3388 &&
  81             pci_get_device(bus) == 0x0021)
  82                 return DRM_IS_NOT_AGP;
  83         else
  84                 return DRM_MIGHT_BE_AGP;
  85 }
  86
  87 static void mga_configure(struct drm_device *dev)
  88 {
  89         dev->driver->driver_features =
  90             DRIVER_USE_AGP | DRIVER_REQUIRE_AGP | DRIVER_USE_MTRR |
  91             DRIVER_HAVE_DMA | DRIVER_HAVE_IRQ;
  92
  93         dev->driver->buf_priv_size      = sizeof(drm_mga_buf_priv_t);
  94         dev->driver->load               = mga_driver_load;
  95         dev->driver->unload             = mga_driver_unload;
  96         dev->driver->lastclose          = mga_driver_lastclose;
  97         dev->driver->get_vblank_counter = mga_get_vblank_counter;
  98         dev->driver->enable_vblank      = mga_enable_vblank;
  99         dev->driver->disable_vblank     = mga_disable_vblank;
 100         dev->driver->irq_preinstall     = mga_driver_irq_preinstall;
 101         dev->driver->irq_postinstall    = mga_driver_irq_postinstall;
 102         dev->driver->irq_uninstall      = mga_driver_irq_uninstall;
 103         dev->driver->irq_handler        = mga_driver_irq_handler;
 104         dev->driver->dma_ioctl          = mga_dma_buffers;
 105         dev->driver->dma_quiescent      = mga_driver_dma_quiescent;
 106         dev->driver->device_is_agp      = mga_driver_device_is_agp;
 107
 108         dev->driver->ioctls             = mga_ioctls;
 109         dev->driver->max_ioctl          = mga_max_ioctl;
 110
 111         dev->driver->name               = DRIVER_NAME;
 112         dev->driver->desc               = DRIVER_DESC;
 113         dev->driver->date               = DRIVER_DATE;
 114         dev->driver->major              = DRIVER_MAJOR;
 115         dev->driver->minor              = DRIVER_MINOR;
 116         dev->driver->patchlevel         = DRIVER_PATCHLEVEL;
 117 }
 118
 119 static int
 120 mga_probe(device_t kdev)
 121 {
 122         return drm_probe(kdev, mga_pciidlist);
 123 }
 124
 125 static int
 126 mga_attach(device_t kdev)
 127 {
 128         struct drm_device *dev = device_get_softc(kdev);
 129
 130         dev->driver = malloc(sizeof(struct drm_driver_info), DRM_MEM_DRIVER,
 131             M_WAITOK | M_ZERO);
 132
 133         mga_configure(dev);
 134
 135         return drm_attach(kdev, mga_pciidlist);
 136 }
 137
 138 static int
 139 mga_detach(device_t kdev)
 140 {
 141         struct drm_device *dev = device_get_softc(kdev);
 142         int ret;
 143
 144         ret = drm_detach(kdev);
 145
 146         free(dev->driver, DRM_MEM_DRIVER);
 147
 148         return ret;
 149 }
 150
 151 static device_method_t mga_methods[] = {
 152         /* Device interface */
 153         DEVMETHOD(device_probe,         mga_probe),
 154         DEVMETHOD(device_attach,        mga_attach),
 155         DEVMETHOD(device_detach,        mga_detach),
 156
 157         { 0, 0 }
 158 };
 159
 160 static driver_t mga_driver = {
 161         "drm",
 162         mga_methods,
 163         sizeof(struct drm_device)
 164 };
 165
 166 extern devclass_t drm_devclass;
 167 DRIVER_MODULE(mga, vgapci, mga_driver, drm_devclass, 0, 0);
 168 MODULE_DEPEND(mga, drm, 1, 1, 1);