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         drm_sis_private_t *dev_priv;
  45
  46         pci_set_master(dev->pdev);
  47
  48         dev_priv = kzalloc(sizeof(drm_sis_private_t), GFP_KERNEL);
  49         if (dev_priv == NULL)
  50                 return -ENOMEM;
  51
  52         idr_init(&dev_priv->object_idr);
  53         dev->dev_private = (void *)dev_priv;
  54         dev_priv->chipset = chipset;
  55
  56         return 0;
  57 }
  58
  59 static void sis_driver_unload(struct drm_device *dev)
  60 {
  61         drm_sis_private_t *dev_priv = dev->dev_private;
  62
  63         idr_destroy(&dev_priv->object_idr);
  64
  65         kfree(dev_priv);
  66 }
  67
  68 static const struct file_operations sis_driver_fops = {
  69         .owner = THIS_MODULE,
  70         .open = drm_open,
  71         .release = drm_release,
  72         .unlocked_ioctl = drm_ioctl,
  73         .mmap = drm_legacy_mmap,
  74         .poll = drm_poll,
  75         .compat_ioctl = drm_compat_ioctl,
  76         .llseek = noop_llseek,
  77 };
  78
  79 static int sis_driver_open(struct drm_device *dev, struct drm_file *file)
  80 {
  81         struct sis_file_private *file_priv;
  82
  83         DRM_DEBUG_DRIVER("\n");
  84         file_priv = kmalloc(sizeof(*file_priv), GFP_KERNEL);
  85         if (!file_priv)
  86                 return -ENOMEM;
  87
  88         file->driver_priv = file_priv;
  89
  90         INIT_LIST_HEAD(&file_priv->obj_list);
  91
  92         return 0;
  93 }
  94
  95 static void sis_driver_postclose(struct drm_device *dev, struct drm_file *file)
  96 {
  97         struct sis_file_private *file_priv = file->driver_priv;
  98
  99         kfree(file_priv);
 100 }
 101
 102 static struct drm_driver driver = {
 103         .driver_features = DRIVER_USE_AGP | DRIVER_LEGACY,
 104         .load = sis_driver_load,
 105         .unload = sis_driver_unload,
 106         .open = sis_driver_open,
 107         .preclose = sis_reclaim_buffers_locked,
 108         .postclose = sis_driver_postclose,
 109         .dma_quiescent = sis_idle,
 110         .lastclose = sis_lastclose,
 111         .ioctls = sis_ioctls,
 112         .fops = &sis_driver_fops,
 113         .name = DRIVER_NAME,
 114         .desc = DRIVER_DESC,
 115         .date = DRIVER_DATE,
 116         .major = DRIVER_MAJOR,
 117         .minor = DRIVER_MINOR,
 118         .patchlevel = DRIVER_PATCHLEVEL,
 119 };
 120
 121 static struct pci_driver sis_pci_driver = {
 122         .name = DRIVER_NAME,
 123         .id_table = pciidlist,
 124 };
 125
 126 static int __init sis_init(void)
 127 {
 128         driver.num_ioctls = sis_max_ioctl;
 129         return drm_legacy_pci_init(&driver, &sis_pci_driver);
 130 }
 131
 132 static void __exit sis_exit(void)
 133 {
 134         drm_legacy_pci_exit(&driver, &sis_pci_driver);
 135 }
 136
 137 module_init(sis_init);
 138 module_exit(sis_exit);
 139
 140 MODULE_AUTHOR(DRIVER_AUTHOR);
 141 MODULE_DESCRIPTION(DRIVER_DESC);
 142 MODULE_LICENSE("GPL and additional rights");