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

via_drv.c (3612B)

      1/*
      2 * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
      3 * Copyright 2001-2003 S3 Graphics, Inc. All Rights Reserved.
      4 *
      5 * Permission is hereby granted, free of charge, to any person obtaining a
      6 * copy of this software and associated documentation files (the "Software"),
      7 * to deal in the Software without restriction, including without limitation
      8 * the rights to use, copy, modify, merge, publish, distribute, sub license,
      9 * and/or sell copies of the Software, and to permit persons to whom the
     10 * Software is furnished to do so, subject to the following conditions:
     11 *
     12 * The above copyright notice and this permission notice (including the
     13 * next paragraph) shall be included in all copies or substantial portions
     14 * of the Software.
     15 *
     16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
     19 * VIA, S3 GRAPHICS, AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
     20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
     22 * DEALINGS IN THE SOFTWARE.
     23 */
     24
     25#include <linux/module.h>
     26#include <linux/pci.h>
     27
     28#include <drm/drm_drv.h>
     29#include <drm/drm_file.h>
     30#include <drm/drm_pciids.h>
     31#include <drm/via_drm.h>
     32
     33#include "via_drv.h"
     34
     35
     36static int via_driver_open(struct drm_device *dev, struct drm_file *file)
     37{
     38	struct via_file_private *file_priv;
     39
     40	DRM_DEBUG_DRIVER("\n");
     41	file_priv = kmalloc(sizeof(*file_priv), GFP_KERNEL);
     42	if (!file_priv)
     43		return -ENOMEM;
     44
     45	file->driver_priv = file_priv;
     46
     47	INIT_LIST_HEAD(&file_priv->obj_list);
     48
     49	return 0;
     50}
     51
     52static void via_driver_postclose(struct drm_device *dev, struct drm_file *file)
     53{
     54	struct via_file_private *file_priv = file->driver_priv;
     55
     56	kfree(file_priv);
     57}
     58
     59static struct pci_device_id pciidlist[] = {
     60	viadrv_PCI_IDS
     61};
     62
     63static const struct file_operations via_driver_fops = {
     64	.owner = THIS_MODULE,
     65	.open = drm_open,
     66	.release = drm_release,
     67	.unlocked_ioctl = drm_ioctl,
     68	.mmap = drm_legacy_mmap,
     69	.poll = drm_poll,
     70	.compat_ioctl = drm_compat_ioctl,
     71	.llseek = noop_llseek,
     72};
     73
     74static struct drm_driver driver = {
     75	.driver_features =
     76	    DRIVER_USE_AGP | DRIVER_HAVE_IRQ | DRIVER_LEGACY,
     77	.load = via_driver_load,
     78	.unload = via_driver_unload,
     79	.open = via_driver_open,
     80	.preclose = via_reclaim_buffers_locked,
     81	.postclose = via_driver_postclose,
     82	.context_dtor = via_final_context,
     83	.get_vblank_counter = via_get_vblank_counter,
     84	.enable_vblank = via_enable_vblank,
     85	.disable_vblank = via_disable_vblank,
     86	.irq_preinstall = via_driver_irq_preinstall,
     87	.irq_postinstall = via_driver_irq_postinstall,
     88	.irq_uninstall = via_driver_irq_uninstall,
     89	.irq_handler = via_driver_irq_handler,
     90	.dma_quiescent = via_driver_dma_quiescent,
     91	.lastclose = via_lastclose,
     92	.ioctls = via_ioctls,
     93	.fops = &via_driver_fops,
     94	.name = DRIVER_NAME,
     95	.desc = DRIVER_DESC,
     96	.date = DRIVER_DATE,
     97	.major = DRIVER_MAJOR,
     98	.minor = DRIVER_MINOR,
     99	.patchlevel = DRIVER_PATCHLEVEL,
    100};
    101
    102static struct pci_driver via_pci_driver = {
    103	.name = DRIVER_NAME,
    104	.id_table = pciidlist,
    105};
    106
    107static int __init via_init(void)
    108{
    109	driver.num_ioctls = via_max_ioctl;
    110	via_init_command_verifier();
    111	return drm_legacy_pci_init(&driver, &via_pci_driver);
    112}
    113
    114static void __exit via_exit(void)
    115{
    116	drm_legacy_pci_exit(&driver, &via_pci_driver);
    117}
    118
    119module_init(via_init);
    120module_exit(via_exit);
    121
    122MODULE_AUTHOR(DRIVER_AUTHOR);
    123MODULE_DESCRIPTION(DRIVER_DESC);
    124MODULE_LICENSE("GPL and additional rights");