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_map.c (3437B)

      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/pci.h>
     26
     27#include <drm/drm_device.h>
     28#include <drm/drm_vblank.h>
     29#include <drm/via_drm.h>
     30
     31#include "via_drv.h"
     32
     33static int via_do_init_map(struct drm_device *dev, drm_via_init_t *init)
     34{
     35	drm_via_private_t *dev_priv = dev->dev_private;
     36
     37	DRM_DEBUG("\n");
     38
     39	dev_priv->sarea = drm_legacy_getsarea(dev);
     40	if (!dev_priv->sarea) {
     41		DRM_ERROR("could not find sarea!\n");
     42		dev->dev_private = (void *)dev_priv;
     43		via_do_cleanup_map(dev);
     44		return -EINVAL;
     45	}
     46
     47	dev_priv->fb = drm_legacy_findmap(dev, init->fb_offset);
     48	if (!dev_priv->fb) {
     49		DRM_ERROR("could not find framebuffer!\n");
     50		dev->dev_private = (void *)dev_priv;
     51		via_do_cleanup_map(dev);
     52		return -EINVAL;
     53	}
     54	dev_priv->mmio = drm_legacy_findmap(dev, init->mmio_offset);
     55	if (!dev_priv->mmio) {
     56		DRM_ERROR("could not find mmio region!\n");
     57		dev->dev_private = (void *)dev_priv;
     58		via_do_cleanup_map(dev);
     59		return -EINVAL;
     60	}
     61
     62	dev_priv->sarea_priv =
     63	    (drm_via_sarea_t *) ((u8 *) dev_priv->sarea->handle +
     64				 init->sarea_priv_offset);
     65
     66	dev_priv->agpAddr = init->agpAddr;
     67
     68	via_init_futex(dev_priv);
     69
     70	via_init_dmablit(dev);
     71
     72	dev->dev_private = (void *)dev_priv;
     73	return 0;
     74}
     75
     76int via_do_cleanup_map(struct drm_device *dev)
     77{
     78	via_dma_cleanup(dev);
     79
     80	return 0;
     81}
     82
     83int via_map_init(struct drm_device *dev, void *data, struct drm_file *file_priv)
     84{
     85	drm_via_init_t *init = data;
     86
     87	DRM_DEBUG("\n");
     88
     89	switch (init->func) {
     90	case VIA_INIT_MAP:
     91		return via_do_init_map(dev, init);
     92	case VIA_CLEANUP_MAP:
     93		return via_do_cleanup_map(dev);
     94	}
     95
     96	return -EINVAL;
     97}
     98
     99int via_driver_load(struct drm_device *dev, unsigned long chipset)
    100{
    101	struct pci_dev *pdev = to_pci_dev(dev->dev);
    102	drm_via_private_t *dev_priv;
    103	int ret = 0;
    104
    105	dev_priv = kzalloc(sizeof(drm_via_private_t), GFP_KERNEL);
    106	if (dev_priv == NULL)
    107		return -ENOMEM;
    108
    109	idr_init(&dev_priv->object_idr);
    110	dev->dev_private = (void *)dev_priv;
    111
    112	dev_priv->chipset = chipset;
    113
    114	pci_set_master(pdev);
    115
    116	ret = drm_vblank_init(dev, 1);
    117	if (ret) {
    118		kfree(dev_priv);
    119		return ret;
    120	}
    121
    122	return 0;
    123}
    124
    125void via_driver_unload(struct drm_device *dev)
    126{
    127	drm_via_private_t *dev_priv = dev->dev_private;
    128
    129	idr_destroy(&dev_priv->object_idr);
    130
    131	kfree(dev_priv);
    132}