The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/drm/mga_drv.c

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    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 <sys/cdefs.h>
   35 __FBSDID("$FreeBSD: releng/9.0/sys/dev/drm/mga_drv.c 189563 2009-03-09 07:55:18Z rnoland $");
   36 
   37 #include "dev/drm/drmP.h"
   38 #include "dev/drm/drm.h"
   39 #include "dev/drm/mga_drm.h"
   40 #include "dev/drm/mga_drv.h"
   41 #include "dev/drm/drm_pciids.h"
   42 
   43 /* drv_PCI_IDs comes from drm_pciids.h, generated from drm_pciids.txt. */
   44 static drm_pci_id_list_t mga_pciidlist[] = {
   45         mga_PCI_IDS
   46 };
   47 
   48 /**
   49  * Determine if the device really is AGP or not.
   50  *
   51  * In addition to the usual tests performed by \c drm_device_is_agp, this
   52  * function detects PCI G450 cards that appear to the system exactly like
   53  * AGP G450 cards.
   54  *
   55  * \param dev   The device to be tested.
   56  *
   57  * \returns
   58  * If the device is a PCI G450, zero is returned.  Otherwise non-zero is
   59  * returned.
   60  *
   61  * \bug
   62  * This function needs to be filled in!  The implementation in
   63  * linux-core/mga_drv.c shows what needs to be done.
   64  */
   65 static int mga_driver_device_is_agp(struct drm_device * dev)
   66 {
   67         device_t bus;
   68 
   69         /* There are PCI versions of the G450.  These cards have the
   70          * same PCI ID as the AGP G450, but have an additional PCI-to-PCI
   71          * bridge chip.  We detect these cards, which are not currently
   72          * supported by this driver, by looking at the device ID of the
   73          * bus the "card" is on.  If vendor is 0x3388 (Hint Corp) and the
   74          * device is 0x0021 (HB6 Universal PCI-PCI bridge), we reject the
   75          * device.
   76          */
   77 #if __FreeBSD_version >= 700010
   78         bus = device_get_parent(device_get_parent(dev->device));
   79 #else
   80         bus = device_get_parent(dev->device);
   81 #endif
   82         if (pci_get_device(dev->device) == 0x0525 &&
   83             pci_get_vendor(bus) == 0x3388 &&
   84             pci_get_device(bus) == 0x0021)
   85                 return DRM_IS_NOT_AGP;
   86         else
   87                 return DRM_MIGHT_BE_AGP;
   88 }
   89 
   90 static void mga_configure(struct drm_device *dev)
   91 {
   92         dev->driver->driver_features =
   93             DRIVER_USE_AGP | DRIVER_REQUIRE_AGP | DRIVER_USE_MTRR |
   94             DRIVER_HAVE_DMA | DRIVER_HAVE_IRQ;
   95 
   96         dev->driver->buf_priv_size      = sizeof(drm_mga_buf_priv_t);
   97         dev->driver->load               = mga_driver_load;
   98         dev->driver->unload             = mga_driver_unload;
   99         dev->driver->lastclose          = mga_driver_lastclose;
  100         dev->driver->get_vblank_counter = mga_get_vblank_counter;
  101         dev->driver->enable_vblank      = mga_enable_vblank;
  102         dev->driver->disable_vblank     = mga_disable_vblank;
  103         dev->driver->irq_preinstall     = mga_driver_irq_preinstall;
  104         dev->driver->irq_postinstall    = mga_driver_irq_postinstall;
  105         dev->driver->irq_uninstall      = mga_driver_irq_uninstall;
  106         dev->driver->irq_handler        = mga_driver_irq_handler;
  107         dev->driver->dma_ioctl          = mga_dma_buffers;
  108         dev->driver->dma_quiescent      = mga_driver_dma_quiescent;
  109         dev->driver->device_is_agp      = mga_driver_device_is_agp;
  110 
  111         dev->driver->ioctls             = mga_ioctls;
  112         dev->driver->max_ioctl          = mga_max_ioctl;
  113 
  114         dev->driver->name               = DRIVER_NAME;
  115         dev->driver->desc               = DRIVER_DESC;
  116         dev->driver->date               = DRIVER_DATE;
  117         dev->driver->major              = DRIVER_MAJOR;
  118         dev->driver->minor              = DRIVER_MINOR;
  119         dev->driver->patchlevel         = DRIVER_PATCHLEVEL;
  120 }
  121 
  122 static int
  123 mga_probe(device_t kdev)
  124 {
  125         return drm_probe(kdev, mga_pciidlist);
  126 }
  127 
  128 static int
  129 mga_attach(device_t kdev)
  130 {
  131         struct drm_device *dev = device_get_softc(kdev);
  132 
  133         dev->driver = malloc(sizeof(struct drm_driver_info), DRM_MEM_DRIVER,
  134             M_WAITOK | M_ZERO);
  135 
  136         mga_configure(dev);
  137 
  138         return drm_attach(kdev, mga_pciidlist);
  139 }
  140 
  141 static int
  142 mga_detach(device_t kdev)
  143 {
  144         struct drm_device *dev = device_get_softc(kdev);
  145         int ret;
  146 
  147         ret = drm_detach(kdev);
  148 
  149         free(dev->driver, DRM_MEM_DRIVER);
  150 
  151         return ret;
  152 }
  153 
  154 static device_method_t mga_methods[] = {
  155         /* Device interface */
  156         DEVMETHOD(device_probe,         mga_probe),
  157         DEVMETHOD(device_attach,        mga_attach),
  158         DEVMETHOD(device_detach,        mga_detach),
  159 
  160         { 0, 0 }
  161 };
  162 
  163 static driver_t mga_driver = {
  164         "drm",
  165         mga_methods,
  166         sizeof(struct drm_device)
  167 };
  168 
  169 extern devclass_t drm_devclass;
  170 #if __FreeBSD_version >= 700010
  171 DRIVER_MODULE(mga, vgapci, mga_driver, drm_devclass, 0, 0);
  172 #else
  173 DRIVER_MODULE(mga, pci, mga_driver, drm_devclass, 0, 0);
  174 #endif
  175 MODULE_DEPEND(mga, drm, 1, 1, 1);

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