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