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