cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

sis_drv.c (3829B)

      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
     38static struct pci_device_id pciidlist[] = {
     39	sisdrv_PCI_IDS
     40};
     41
     42static 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
     60static 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
     69static 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
     80static 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
     96static 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
    103static 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
    122static struct pci_driver sis_pci_driver = {
    123	.name = DRIVER_NAME,
    124	.id_table = pciidlist,
    125};
    126
    127static 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
    133static void __exit sis_exit(void)
    134{
    135	drm_legacy_pci_exit(&driver, &sis_pci_driver);
    136}
    137
    138module_init(sis_init);
    139module_exit(sis_exit);
    140
    141MODULE_AUTHOR(DRIVER_AUTHOR);
    142MODULE_DESCRIPTION(DRIVER_DESC);
    143MODULE_LICENSE("GPL and additional rights");