drivers/gpu/drm/sis/sis_drv.c

   1 /* sis.c -- sis driver -*- linux-c -*-
   2  *
   3  * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
   4  * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
   5  * All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the next
  15  * paragraph) shall be included in all copies or substantial portions of the
  16  * Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  21  * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  22  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  23  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  24  * DEALINGS IN THE SOFTWARE.
  25  *
  26  */
  27
  28 #include <linux/module.h>
  29 #include <linux/pci.h>
  30
  31 #include <drm/drm_drv.h>
  32 #include <drm/drm_file.h>
  33 #include <drm/drm_pciids.h>
  34 #include <drm/sis_drm.h>
  35
  36 #include "sis_drv.h"
  37
  38 static struct pci_device_id pciidlist[] = {
  39         sisdrv_PCI_IDS
  40 };
  41
  42 static int sis_driver_load(struct drm_device *dev, unsigned long chipset)
  43 {
  44         struct pci_dev *pdev = to_pci_dev(dev->dev);
  45         drm_sis_private_t *dev_priv;
  46
  47         pci_set_master(pdev);
  48
  49         dev_priv = kzalloc(sizeof(drm_sis_private_t), GFP_KERNEL);
  50         if (dev_priv == NULL)
  51                 return -ENOMEM;
  52
  53         idr_init(&dev_priv->object_idr);
  54         dev->dev_private = (void *)dev_priv;
  55         dev_priv->chipset = chipset;
  56
  57         return 0;
  58 }
  59
  60 static void sis_driver_unload(struct drm_device *dev)
  61 {
  62         drm_sis_private_t *dev_priv = dev->dev_private;
  63
  64         idr_destroy(&dev_priv->object_idr);
  65
  66         kfree(dev_priv);
  67 }
  68
  69 static const struct file_operations sis_driver_fops = {
  70         .owner = THIS_MODULE,
  71         .open = drm_open,
  72         .release = drm_release,
  73         .unlocked_ioctl = drm_ioctl,
  74         .mmap = drm_legacy_mmap,
  75         .poll = drm_poll,
  76         .compat_ioctl = drm_compat_ioctl,
  77         .llseek = noop_llseek,
  78 };
  79
  80 static int sis_driver_open(struct drm_device *dev, struct drm_file *file)
  81 {
  82         struct sis_file_private *file_priv;
  83
  84         DRM_DEBUG_DRIVER("\n");
  85         file_priv = kmalloc(sizeof(*file_priv), GFP_KERNEL);
  86         if (!file_priv)
  87                 return -ENOMEM;
  88
  89         file->driver_priv = file_priv;
  90
  91         INIT_LIST_HEAD(&file_priv->obj_list);
  92
  93         return 0;
  94 }
  95
  96 static void sis_driver_postclose(struct drm_device *dev, struct drm_file *file)
  97 {
  98         struct sis_file_private *file_priv = file->driver_priv;
  99
 100         kfree(file_priv);
 101 }
 102
 103 static struct drm_driver driver = {
 104         .driver_features = DRIVER_USE_AGP | DRIVER_LEGACY,
 105         .load = sis_driver_load,
 106         .unload = sis_driver_unload,
 107         .open = sis_driver_open,
 108         .preclose = sis_reclaim_buffers_locked,
 109         .postclose = sis_driver_postclose,
 110         .dma_quiescent = sis_idle,
 111         .lastclose = sis_lastclose,
 112         .ioctls = sis_ioctls,
 113         .fops = &sis_driver_fops,
 114         .name = DRIVER_NAME,
 115         .desc = DRIVER_DESC,
 116         .date = DRIVER_DATE,
 117         .major = DRIVER_MAJOR,
 118         .minor = DRIVER_MINOR,
 119         .patchlevel = DRIVER_PATCHLEVEL,
 120 };
 121
 122 static struct pci_driver sis_pci_driver = {
 123         .name = DRIVER_NAME,
 124         .id_table = pciidlist,
 125 };
 126
 127 static int __init sis_init(void)
 128 {
 129         driver.num_ioctls = sis_max_ioctl;
 130         return drm_legacy_pci_init(&driver, &sis_pci_driver);
 131 }
 132
 133 static void __exit sis_exit(void)
 134 {
 135         drm_legacy_pci_exit(&driver, &sis_pci_driver);
 136 }
 137
 138 module_init(sis_init);
 139 module_exit(sis_exit);
 140
 141 MODULE_AUTHOR(DRIVER_AUTHOR);
 142 MODULE_DESCRIPTION(DRIVER_DESC);
 143 MODULE_LICENSE("GPL and additional rights");