1/* $NetBSD: sis_drv.c,v 1.4 2021/12/18 23:45:44 riastradh Exp $ */ 2 3/* sis.c -- sis driver -*- linux-c -*- 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 * PRECISION INSIGHT 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 OTHER 26 * DEALINGS IN THE SOFTWARE. 27 * 28 */ 29 30#include <sys/cdefs.h> 31__KERNEL_RCSID(0, "$NetBSD: sis_drv.c,v 1.4 2021/12/18 23:45:44 riastradh Exp $"); 32 33#include <linux/module.h> 34#include <linux/pci.h> 35 36#include <drm/drm_drv.h> 37#include <drm/drm_file.h> 38#include <drm/drm_pciids.h> 39#include <drm/sis_drm.h> 40 41#include "sis_drv.h" 42 43static struct pci_device_id pciidlist[] = { 44 sisdrv_PCI_IDS 45}; 46 47static int sis_driver_load(struct drm_device *dev, unsigned long chipset) 48{ 49 drm_sis_private_t *dev_priv; 50 51 pci_set_master(dev->pdev); 52 53 dev_priv = kzalloc(sizeof(drm_sis_private_t), GFP_KERNEL); 54 if (dev_priv == NULL) 55 return -ENOMEM; 56 57 idr_init(&dev_priv->object_idr); 58 dev->dev_private = (void *)dev_priv; 59 dev_priv->chipset = chipset; 60 61 return 0; 62} 63 64static void sis_driver_unload(struct drm_device *dev) 65{ 66 drm_sis_private_t *dev_priv = dev->dev_private; 67 68 idr_destroy(&dev_priv->object_idr); 69 70 kfree(dev_priv); 71} 72 73static const struct file_operations sis_driver_fops = { 74 .owner = THIS_MODULE, 75 .open = drm_open, 76 .release = drm_release, 77 .unlocked_ioctl = drm_ioctl, 78 .mmap = drm_legacy_mmap, 79 .poll = drm_poll, 80 .compat_ioctl = drm_compat_ioctl, 81 .llseek = noop_llseek, 82}; 83 84static int sis_driver_open(struct drm_device *dev, struct drm_file *file) 85{ 86 struct sis_file_private *file_priv; 87 88 DRM_DEBUG_DRIVER("\n"); 89 file_priv = kmalloc(sizeof(*file_priv), GFP_KERNEL); 90 if (!file_priv) 91 return -ENOMEM; 92 93 file->driver_priv = file_priv; 94 95 INIT_LIST_HEAD(&file_priv->obj_list); 96 97 return 0; 98} 99 100static void sis_driver_postclose(struct drm_device *dev, struct drm_file *file) 101{ 102 struct sis_file_private *file_priv = file->driver_priv; 103 104 kfree(file_priv); 105} 106 107static struct drm_driver driver = { 108 .driver_features = DRIVER_USE_AGP | DRIVER_LEGACY, 109 .load = sis_driver_load, 110 .unload = sis_driver_unload, 111 .open = sis_driver_open, 112 .preclose = sis_reclaim_buffers_locked, 113 .postclose = sis_driver_postclose, 114 .dma_quiescent = sis_idle, 115 .lastclose = sis_lastclose, 116 .ioctls = sis_ioctls, 117 .fops = &sis_driver_fops, 118 .name = DRIVER_NAME, 119 .desc = DRIVER_DESC, 120 .date = DRIVER_DATE, 121 .major = DRIVER_MAJOR, 122 .minor = DRIVER_MINOR, 123 .patchlevel = DRIVER_PATCHLEVEL, 124}; 125 126static struct pci_driver sis_pci_driver = { 127 .name = DRIVER_NAME, 128 .id_table = pciidlist, 129}; 130 131static int __init sis_init(void) 132{ 133 driver.num_ioctls = sis_max_ioctl; 134 return drm_legacy_pci_init(&driver, &sis_pci_driver); 135} 136 137static void __exit sis_exit(void) 138{ 139 drm_legacy_pci_exit(&driver, &sis_pci_driver); 140} 141 142module_init(sis_init); 143module_exit(sis_exit); 144 145MODULE_AUTHOR(DRIVER_AUTHOR); 146MODULE_DESCRIPTION(DRIVER_DESC); 147MODULE_LICENSE("GPL and additional rights"); 148