cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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i810_drv.c (3115B)

      1/* i810_drv.c -- I810 driver -*- linux-c -*-
      2 * Created: Mon Dec 13 01:56:22 1999 by jhartmann@precisioninsight.com
      3 *
      4 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
      5 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
      6 * All Rights Reserved.
      7 *
      8 * Permission is hereby granted, free of charge, to any person obtaining a
      9 * copy of this software and associated documentation files (the "Software"),
     10 * to deal in the Software without restriction, including without limitation
     11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     12 * and/or sell copies of the Software, and to permit persons to whom the
     13 * Software is furnished to do so, subject to the following conditions:
     14 *
     15 * The above copyright notice and this permission notice (including the next
     16 * paragraph) shall be included in all copies or substantial portions of the
     17 * Software.
     18 *
     19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     22 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
     23 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     24 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     25 * OTHER DEALINGS IN THE SOFTWARE.
     26 *
     27 * Authors:
     28 *    Rickard E. (Rik) Faith <faith@valinux.com>
     29 *    Jeff Hartmann <jhartmann@valinux.com>
     30 *    Gareth Hughes <gareth@valinux.com>
     31 */
     32
     33#include "i810_drv.h"
     34
     35#include <linux/module.h>
     36#include <linux/pci.h>
     37
     38#include <drm/drm_drv.h>
     39#include <drm/drm_file.h>
     40#include <drm/drm_pciids.h>
     41#include <drm/i810_drm.h>
     42
     43
     44static struct pci_device_id pciidlist[] = {
     45	i810_PCI_IDS
     46};
     47
     48static const struct file_operations i810_driver_fops = {
     49	.owner = THIS_MODULE,
     50	.open = drm_open,
     51	.release = drm_release,
     52	.unlocked_ioctl = drm_ioctl,
     53	.mmap = drm_legacy_mmap,
     54	.poll = drm_poll,
     55	.compat_ioctl = drm_compat_ioctl,
     56	.llseek = noop_llseek,
     57};
     58
     59static struct drm_driver driver = {
     60	.driver_features = DRIVER_USE_AGP | DRIVER_HAVE_DMA | DRIVER_LEGACY,
     61	.dev_priv_size = sizeof(drm_i810_buf_priv_t),
     62	.load = i810_driver_load,
     63	.lastclose = i810_driver_lastclose,
     64	.preclose = i810_driver_preclose,
     65	.dma_quiescent = i810_driver_dma_quiescent,
     66	.ioctls = i810_ioctls,
     67	.fops = &i810_driver_fops,
     68	.name = DRIVER_NAME,
     69	.desc = DRIVER_DESC,
     70	.date = DRIVER_DATE,
     71	.major = DRIVER_MAJOR,
     72	.minor = DRIVER_MINOR,
     73	.patchlevel = DRIVER_PATCHLEVEL,
     74};
     75
     76static struct pci_driver i810_pci_driver = {
     77	.name = DRIVER_NAME,
     78	.id_table = pciidlist,
     79};
     80
     81static int __init i810_init(void)
     82{
     83	if (num_possible_cpus() > 1) {
     84		pr_err("drm/i810 does not support SMP\n");
     85		return -EINVAL;
     86	}
     87	driver.num_ioctls = i810_max_ioctl;
     88	return drm_legacy_pci_init(&driver, &i810_pci_driver);
     89}
     90
     91static void __exit i810_exit(void)
     92{
     93	drm_legacy_pci_exit(&driver, &i810_pci_driver);
     94}
     95
     96module_init(i810_init);
     97module_exit(i810_exit);
     98
     99MODULE_AUTHOR(DRIVER_AUTHOR);
    100MODULE_DESCRIPTION(DRIVER_DESC);
    101MODULE_LICENSE("GPL and additional rights");