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_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 .dma_quiescent = mga_driver_dma_quiescent, 68 .device_is_agp = mga_driver_device_is_agp, 69 .get_vblank_counter = mga_get_vblank_counter, 70 .enable_vblank = mga_enable_vblank, 71 .disable_vblank = mga_disable_vblank, 72 .irq_preinstall = mga_driver_irq_preinstall, 73 .irq_postinstall = mga_driver_irq_postinstall, 74 .irq_uninstall = mga_driver_irq_uninstall, 75 .irq_handler = mga_driver_irq_handler, 76 .ioctls = mga_ioctls, 77 .dma_ioctl = mga_dma_buffers, 78 .fops = &mga_driver_fops, 79 .name = DRIVER_NAME, 80 .desc = DRIVER_DESC, 81 .date = DRIVER_DATE, 82 .major = DRIVER_MAJOR, 83 .minor = DRIVER_MINOR, 84 .patchlevel = DRIVER_PATCHLEVEL, 85 }; 86 87 static struct pci_driver mga_pci_driver = { 88 .name = DRIVER_NAME, 89 .id_table = pciidlist, 90 }; 91 92 static int __init mga_init(void) 93 { 94 driver.num_ioctls = mga_max_ioctl; 95 return drm_pci_init(&driver, &mga_pci_driver); 96 } 97 98 static void __exit mga_exit(void) 99 { 100 drm_pci_exit(&driver, &mga_pci_driver); 101 } 102 103 module_init(mga_init); 104 module_exit(mga_exit); 105 106 MODULE_AUTHOR(DRIVER_AUTHOR); 107 MODULE_DESCRIPTION(DRIVER_DESC); 108 MODULE_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 */ 122 static 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