Version:  2.0.40 2.2.26 2.4.37 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18

Linux/drivers/gpu/drm/mga/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/module.h>
 33 
 34 #include <drm/drmP.h>
 35 #include <drm/mga_drm.h>
 36 #include "mga_drv.h"
 37 
 38 #include <drm/drm_pciids.h>
 39 
 40 static int mga_driver_device_is_agp(struct drm_device *dev);
 41 
 42 static struct pci_device_id pciidlist[] = {
 43         mga_PCI_IDS
 44 };
 45 
 46 static const struct file_operations mga_driver_fops = {
 47         .owner = THIS_MODULE,
 48         .open = drm_open,
 49         .release = drm_release,
 50         .unlocked_ioctl = drm_ioctl,
 51         .mmap = drm_legacy_mmap,
 52         .poll = drm_poll,
 53 #ifdef CONFIG_COMPAT
 54         .compat_ioctl = mga_compat_ioctl,
 55 #endif
 56         .llseek = noop_llseek,
 57 };
 58 
 59 static struct drm_driver driver = {
 60         .driver_features =
 61             DRIVER_USE_AGP | DRIVER_PCI_DMA |
 62             DRIVER_HAVE_DMA | DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED,
 63         .dev_priv_size = sizeof(drm_mga_buf_priv_t),
 64         .load = mga_driver_load,
 65         .unload = mga_driver_unload,
 66         .lastclose = mga_driver_lastclose,
 67         .set_busid = drm_pci_set_busid,
 68         .dma_quiescent = mga_driver_dma_quiescent,
 69         .device_is_agp = mga_driver_device_is_agp,
 70         .get_vblank_counter = mga_get_vblank_counter,
 71         .enable_vblank = mga_enable_vblank,
 72         .disable_vblank = mga_disable_vblank,
 73         .irq_preinstall = mga_driver_irq_preinstall,
 74         .irq_postinstall = mga_driver_irq_postinstall,
 75         .irq_uninstall = mga_driver_irq_uninstall,
 76         .irq_handler = mga_driver_irq_handler,
 77         .ioctls = mga_ioctls,
 78         .dma_ioctl = mga_dma_buffers,
 79         .fops = &mga_driver_fops,
 80         .name = DRIVER_NAME,
 81         .desc = DRIVER_DESC,
 82         .date = DRIVER_DATE,
 83         .major = DRIVER_MAJOR,
 84         .minor = DRIVER_MINOR,
 85         .patchlevel = DRIVER_PATCHLEVEL,
 86 };
 87 
 88 static struct pci_driver mga_pci_driver = {
 89         .name = DRIVER_NAME,
 90         .id_table = pciidlist,
 91 };
 92 
 93 static int __init mga_init(void)
 94 {
 95         driver.num_ioctls = mga_max_ioctl;
 96         return drm_pci_init(&driver, &mga_pci_driver);
 97 }
 98 
 99 static void __exit mga_exit(void)
100 {
101         drm_pci_exit(&driver, &mga_pci_driver);
102 }
103 
104 module_init(mga_init);
105 module_exit(mga_exit);
106 
107 MODULE_AUTHOR(DRIVER_AUTHOR);
108 MODULE_DESCRIPTION(DRIVER_DESC);
109 MODULE_LICENSE("GPL and additional rights");
110 
111 /**
112  * Determine if the device really is AGP or not.
113  *
114  * In addition to the usual tests performed by \c drm_device_is_agp, this
115  * function detects PCI G450 cards that appear to the system exactly like
116  * AGP G450 cards.
117  *
118  * \param dev   The device to be tested.
119  *
120  * \returns
121  * If the device is a PCI G450, zero is returned.  Otherwise 2 is returned.
122  */
123 static int mga_driver_device_is_agp(struct drm_device *dev)
124 {
125         const struct pci_dev *const pdev = dev->pdev;
126 
127         /* There are PCI versions of the G450.  These cards have the
128          * same PCI ID as the AGP G450, but have an additional PCI-to-PCI
129          * bridge chip.  We detect these cards, which are not currently
130          * supported by this driver, by looking at the device ID of the
131          * bus the "card" is on.  If vendor is 0x3388 (Hint Corp) and the
132          * device is 0x0021 (HB6 Universal PCI-PCI bridge), we reject the
133          * device.
134          */
135 
136         if ((pdev->device == 0x0525) && pdev->bus->self
137             && (pdev->bus->self->vendor == 0x3388)
138             && (pdev->bus->self->device == 0x0021)) {
139                 return 0;
140         }
141 
142         return 2;
143 }
144 

This page was automatically generated by LXR 0.3.1 (source).  •  Linux is a registered trademark of Linus Torvalds  •  Contact us